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values | avg_line_length
float64 5.88
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int64 12
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float64 0.27
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omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/utils.py | import asyncio
import urllib.parse
from typing import TYPE_CHECKING, Optional, Tuple
if TYPE_CHECKING:
from asgiref.typing import WWWScope
def get_remote_addr(transport: asyncio.Transport) -> Optional[Tuple[str, int]]:
socket_info = transport.get_extra_info("socket")
if socket_info is not None:
try:
info = socket_info.getpeername()
return (str(info[0]), int(info[1])) if isinstance(info, tuple) else None
except OSError: # pragma: no cover
# This case appears to inconsistently occur with uvloop
# bound to a unix domain socket.
return None
info = transport.get_extra_info("peername")
if info is not None and isinstance(info, (list, tuple)) and len(info) == 2:
return (str(info[0]), int(info[1]))
return None
def get_local_addr(transport: asyncio.Transport) -> Optional[Tuple[str, int]]:
socket_info = transport.get_extra_info("socket")
if socket_info is not None:
info = socket_info.getsockname()
return (str(info[0]), int(info[1])) if isinstance(info, tuple) else None
info = transport.get_extra_info("sockname")
if info is not None and isinstance(info, (list, tuple)) and len(info) == 2:
return (str(info[0]), int(info[1]))
return None
def is_ssl(transport: asyncio.Transport) -> bool:
return bool(transport.get_extra_info("sslcontext"))
def get_client_addr(scope: "WWWScope") -> str:
client = scope.get("client")
if not client:
return ""
return "%s:%d" % client
def get_path_with_query_string(scope: "WWWScope") -> str:
path_with_query_string = urllib.parse.quote(scope["path"])
if scope["query_string"]:
path_with_query_string = "{}?{}".format(
path_with_query_string, scope["query_string"].decode("ascii")
)
return path_with_query_string
| 1,876 | Python | 32.517857 | 84 | 0.642857 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/websockets/wsproto_impl.py | import asyncio
import logging
import sys
import typing
from urllib.parse import unquote
import wsproto
from wsproto import ConnectionType, events
from wsproto.connection import ConnectionState
from wsproto.extensions import Extension, PerMessageDeflate
from wsproto.utilities import RemoteProtocolError
from uvicorn.config import Config
from uvicorn.logging import TRACE_LOG_LEVEL
from uvicorn.protocols.utils import (
get_local_addr,
get_path_with_query_string,
get_remote_addr,
is_ssl,
)
from uvicorn.server import ServerState
if typing.TYPE_CHECKING:
from asgiref.typing import (
ASGISendEvent,
WebSocketAcceptEvent,
WebSocketCloseEvent,
WebSocketConnectEvent,
WebSocketDisconnectEvent,
WebSocketReceiveEvent,
WebSocketScope,
WebSocketSendEvent,
)
WebSocketEvent = typing.Union[
"WebSocketReceiveEvent",
"WebSocketDisconnectEvent",
"WebSocketConnectEvent",
]
if sys.version_info < (3, 8): # pragma: py-gte-38
from typing_extensions import Literal
else: # pragma: py-lt-38
from typing import Literal
class WSProtocol(asyncio.Protocol):
def __init__(
self,
config: Config,
server_state: ServerState,
app_state: typing.Dict[str, typing.Any],
_loop: typing.Optional[asyncio.AbstractEventLoop] = None,
) -> None:
if not config.loaded:
config.load()
self.config = config
self.app = config.loaded_app
self.loop = _loop or asyncio.get_event_loop()
self.logger = logging.getLogger("uvicorn.error")
self.root_path = config.root_path
self.app_state = app_state
# Shared server state
self.connections = server_state.connections
self.tasks = server_state.tasks
self.default_headers = server_state.default_headers
# Connection state
self.transport: asyncio.Transport = None # type: ignore[assignment]
self.server: typing.Optional[typing.Tuple[str, int]] = None
self.client: typing.Optional[typing.Tuple[str, int]] = None
self.scheme: Literal["wss", "ws"] = None # type: ignore[assignment]
# WebSocket state
self.queue: asyncio.Queue["WebSocketEvent"] = asyncio.Queue()
self.handshake_complete = False
self.close_sent = False
self.conn = wsproto.WSConnection(connection_type=ConnectionType.SERVER)
self.read_paused = False
self.writable = asyncio.Event()
self.writable.set()
# Buffers
self.bytes = b""
self.text = ""
# Protocol interface
def connection_made( # type: ignore[override]
self, transport: asyncio.Transport
) -> None:
self.connections.add(self)
self.transport = transport
self.server = get_local_addr(transport)
self.client = get_remote_addr(transport)
self.scheme = "wss" if is_ssl(transport) else "ws"
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection made", prefix)
def connection_lost(self, exc: typing.Optional[Exception]) -> None:
code = 1005 if self.handshake_complete else 1006
self.queue.put_nowait({"type": "websocket.disconnect", "code": code})
self.connections.remove(self)
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection lost", prefix)
self.handshake_complete = True
if exc is None:
self.transport.close()
def eof_received(self) -> None:
pass
def data_received(self, data: bytes) -> None:
try:
self.conn.receive_data(data)
except RemoteProtocolError as err:
# TODO: Remove `type: ignore` when wsproto fixes the type annotation.
self.transport.write(self.conn.send(err.event_hint)) # type: ignore[arg-type] # noqa: E501
self.transport.close()
else:
self.handle_events()
def handle_events(self) -> None:
for event in self.conn.events():
if isinstance(event, events.Request):
self.handle_connect(event)
elif isinstance(event, events.TextMessage):
self.handle_text(event)
elif isinstance(event, events.BytesMessage):
self.handle_bytes(event)
elif isinstance(event, events.CloseConnection):
self.handle_close(event)
elif isinstance(event, events.Ping):
self.handle_ping(event)
def pause_writing(self) -> None:
"""
Called by the transport when the write buffer exceeds the high water mark.
"""
self.writable.clear()
def resume_writing(self) -> None:
"""
Called by the transport when the write buffer drops below the low water mark.
"""
self.writable.set()
def shutdown(self) -> None:
if self.handshake_complete:
self.queue.put_nowait({"type": "websocket.disconnect", "code": 1012})
output = self.conn.send(wsproto.events.CloseConnection(code=1012))
self.transport.write(output)
else:
self.send_500_response()
self.transport.close()
def on_task_complete(self, task: asyncio.Task) -> None:
self.tasks.discard(task)
# Event handlers
def handle_connect(self, event: events.Request) -> None:
headers = [(b"host", event.host.encode())]
headers += [(key.lower(), value) for key, value in event.extra_headers]
raw_path, _, query_string = event.target.partition("?")
self.scope: "WebSocketScope" = { # type: ignore[typeddict-item]
"type": "websocket",
"asgi": {"version": self.config.asgi_version, "spec_version": "2.3"},
"http_version": "1.1",
"scheme": self.scheme,
"server": self.server,
"client": self.client,
"root_path": self.root_path,
"path": unquote(raw_path),
"raw_path": raw_path.encode("ascii"),
"query_string": query_string.encode("ascii"),
"headers": headers,
"subprotocols": event.subprotocols,
"extensions": None,
"state": self.app_state.copy(),
}
self.queue.put_nowait({"type": "websocket.connect"})
task = self.loop.create_task(self.run_asgi())
task.add_done_callback(self.on_task_complete)
self.tasks.add(task)
def handle_text(self, event: events.TextMessage) -> None:
self.text += event.data
if event.message_finished:
msg: "WebSocketReceiveEvent" = { # type: ignore[typeddict-item]
"type": "websocket.receive",
"text": self.text,
}
self.queue.put_nowait(msg)
self.text = ""
if not self.read_paused:
self.read_paused = True
self.transport.pause_reading()
def handle_bytes(self, event: events.BytesMessage) -> None:
self.bytes += event.data
# todo: we may want to guard the size of self.bytes and self.text
if event.message_finished:
msg: "WebSocketReceiveEvent" = { # type: ignore[typeddict-item]
"type": "websocket.receive",
"bytes": self.bytes,
}
self.queue.put_nowait(msg)
self.bytes = b""
if not self.read_paused:
self.read_paused = True
self.transport.pause_reading()
def handle_close(self, event: events.CloseConnection) -> None:
if self.conn.state == ConnectionState.REMOTE_CLOSING:
self.transport.write(self.conn.send(event.response()))
self.queue.put_nowait({"type": "websocket.disconnect", "code": event.code})
self.transport.close()
def handle_ping(self, event: events.Ping) -> None:
self.transport.write(self.conn.send(event.response()))
def send_500_response(self) -> None:
headers = [
(b"content-type", b"text/plain; charset=utf-8"),
(b"connection", b"close"),
]
output = self.conn.send(
wsproto.events.RejectConnection(
status_code=500, headers=headers, has_body=True
)
)
output += self.conn.send(
wsproto.events.RejectData(data=b"Internal Server Error")
)
self.transport.write(output)
async def run_asgi(self) -> None:
try:
result = await self.app(self.scope, self.receive, self.send)
except BaseException:
self.logger.exception("Exception in ASGI application\n")
if not self.handshake_complete:
self.send_500_response()
self.transport.close()
else:
if not self.handshake_complete:
msg = "ASGI callable returned without completing handshake."
self.logger.error(msg)
self.send_500_response()
self.transport.close()
elif result is not None:
msg = "ASGI callable should return None, but returned '%s'."
self.logger.error(msg, result)
self.transport.close()
async def send(self, message: "ASGISendEvent") -> None:
await self.writable.wait()
message_type = message["type"]
if not self.handshake_complete:
if message_type == "websocket.accept":
message = typing.cast("WebSocketAcceptEvent", message)
self.logger.info(
'%s - "WebSocket %s" [accepted]',
self.scope["client"],
get_path_with_query_string(self.scope),
)
subprotocol = message.get("subprotocol")
extra_headers = self.default_headers + list(message.get("headers", []))
extensions: typing.List[Extension] = []
if self.config.ws_per_message_deflate:
extensions.append(PerMessageDeflate())
if not self.transport.is_closing():
self.handshake_complete = True
output = self.conn.send(
wsproto.events.AcceptConnection(
subprotocol=subprotocol,
extensions=extensions,
extra_headers=extra_headers,
)
)
self.transport.write(output)
elif message_type == "websocket.close":
self.queue.put_nowait({"type": "websocket.disconnect", "code": 1006})
self.logger.info(
'%s - "WebSocket %s" 403',
self.scope["client"],
get_path_with_query_string(self.scope),
)
self.handshake_complete = True
self.close_sent = True
event = events.RejectConnection(status_code=403, headers=[])
output = self.conn.send(event)
self.transport.write(output)
self.transport.close()
else:
msg = (
"Expected ASGI message 'websocket.accept' or 'websocket.close', "
"but got '%s'."
)
raise RuntimeError(msg % message_type)
elif not self.close_sent:
if message_type == "websocket.send":
message = typing.cast("WebSocketSendEvent", message)
bytes_data = message.get("bytes")
text_data = message.get("text")
data = text_data if bytes_data is None else bytes_data
output = self.conn.send(
wsproto.events.Message(data=data) # type: ignore[type-var]
)
if not self.transport.is_closing():
self.transport.write(output)
elif message_type == "websocket.close":
message = typing.cast("WebSocketCloseEvent", message)
self.close_sent = True
code = message.get("code", 1000)
reason = message.get("reason", "") or ""
self.queue.put_nowait({"type": "websocket.disconnect", "code": code})
output = self.conn.send(
wsproto.events.CloseConnection(code=code, reason=reason)
)
if not self.transport.is_closing():
self.transport.write(output)
self.transport.close()
else:
msg = (
"Expected ASGI message 'websocket.send' or 'websocket.close',"
" but got '%s'."
)
raise RuntimeError(msg % message_type)
else:
msg = "Unexpected ASGI message '%s', after sending 'websocket.close'."
raise RuntimeError(msg % message_type)
async def receive(self) -> "WebSocketEvent":
message = await self.queue.get()
if self.read_paused and self.queue.empty():
self.read_paused = False
self.transport.resume_reading()
return message
| 13,486 | Python | 36.673184 | 104 | 0.565846 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/websockets/auto.py | import asyncio
import typing
AutoWebSocketsProtocol: typing.Optional[typing.Callable[..., asyncio.Protocol]]
try:
import websockets # noqa
except ImportError: # pragma: no cover
try:
import wsproto # noqa
except ImportError:
AutoWebSocketsProtocol = None
else:
from uvicorn.protocols.websockets.wsproto_impl import WSProtocol
AutoWebSocketsProtocol = WSProtocol
else:
from uvicorn.protocols.websockets.websockets_impl import WebSocketProtocol
AutoWebSocketsProtocol = WebSocketProtocol
| 548 | Python | 26.449999 | 79 | 0.74635 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/websockets/websockets_impl.py | import asyncio
import http
import logging
import sys
from typing import (
TYPE_CHECKING,
Any,
Dict,
List,
Optional,
Sequence,
Tuple,
Union,
cast,
)
from urllib.parse import unquote
import websockets
from websockets.datastructures import Headers
from websockets.exceptions import ConnectionClosed
from websockets.extensions.permessage_deflate import ServerPerMessageDeflateFactory
from websockets.legacy.server import HTTPResponse
from websockets.server import WebSocketServerProtocol
from websockets.typing import Subprotocol
from uvicorn.config import Config
from uvicorn.logging import TRACE_LOG_LEVEL
from uvicorn.protocols.utils import (
get_local_addr,
get_path_with_query_string,
get_remote_addr,
is_ssl,
)
from uvicorn.server import ServerState
if sys.version_info < (3, 8): # pragma: py-gte-38
from typing_extensions import Literal
else: # pragma: py-lt-38
from typing import Literal
if TYPE_CHECKING:
from asgiref.typing import (
ASGISendEvent,
WebSocketAcceptEvent,
WebSocketCloseEvent,
WebSocketConnectEvent,
WebSocketDisconnectEvent,
WebSocketReceiveEvent,
WebSocketScope,
WebSocketSendEvent,
)
class Server:
closing = False
def register(self, ws: WebSocketServerProtocol) -> None:
pass
def unregister(self, ws: WebSocketServerProtocol) -> None:
pass
def is_serving(self) -> bool:
return not self.closing
class WebSocketProtocol(WebSocketServerProtocol):
extra_headers: List[Tuple[str, str]]
def __init__(
self,
config: Config,
server_state: ServerState,
app_state: Dict[str, Any],
_loop: Optional[asyncio.AbstractEventLoop] = None,
):
if not config.loaded:
config.load()
self.config = config
self.app = config.loaded_app
self.loop = _loop or asyncio.get_event_loop()
self.root_path = config.root_path
self.app_state = app_state
# Shared server state
self.connections = server_state.connections
self.tasks = server_state.tasks
# Connection state
self.transport: asyncio.Transport = None # type: ignore[assignment]
self.server: Optional[Tuple[str, int]] = None
self.client: Optional[Tuple[str, int]] = None
self.scheme: Literal["wss", "ws"] = None # type: ignore[assignment]
# Connection events
self.scope: WebSocketScope = None # type: ignore[assignment]
self.handshake_started_event = asyncio.Event()
self.handshake_completed_event = asyncio.Event()
self.closed_event = asyncio.Event()
self.initial_response: Optional[HTTPResponse] = None
self.connect_sent = False
self.lost_connection_before_handshake = False
self.accepted_subprotocol: Optional[Subprotocol] = None
self.ws_server: Server = Server() # type: ignore[assignment]
extensions = []
if self.config.ws_per_message_deflate:
extensions.append(ServerPerMessageDeflateFactory())
super().__init__(
ws_handler=self.ws_handler,
ws_server=self.ws_server, # type: ignore[arg-type]
max_size=self.config.ws_max_size,
ping_interval=self.config.ws_ping_interval,
ping_timeout=self.config.ws_ping_timeout,
extensions=extensions,
logger=logging.getLogger("uvicorn.error"),
)
self.server_header = None
self.extra_headers = [
(name.decode("latin-1"), value.decode("latin-1"))
for name, value in server_state.default_headers
]
def connection_made( # type: ignore[override]
self, transport: asyncio.Transport
) -> None:
self.connections.add(self)
self.transport = transport
self.server = get_local_addr(transport)
self.client = get_remote_addr(transport)
self.scheme = "wss" if is_ssl(transport) else "ws"
if self.logger.isEnabledFor(TRACE_LOG_LEVEL):
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection made", prefix)
super().connection_made(transport)
def connection_lost(self, exc: Optional[Exception]) -> None:
self.connections.remove(self)
if self.logger.isEnabledFor(TRACE_LOG_LEVEL):
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection lost", prefix)
self.lost_connection_before_handshake = (
not self.handshake_completed_event.is_set()
)
self.handshake_completed_event.set()
super().connection_lost(exc)
if exc is None:
self.transport.close()
def shutdown(self) -> None:
self.ws_server.closing = True
if self.handshake_completed_event.is_set():
self.fail_connection(1012)
else:
self.send_500_response()
self.transport.close()
def on_task_complete(self, task: asyncio.Task) -> None:
self.tasks.discard(task)
async def process_request(
self, path: str, headers: Headers
) -> Optional[HTTPResponse]:
"""
This hook is called to determine if the websocket should return
an HTTP response and close.
Our behavior here is to start the ASGI application, and then wait
for either `accept` or `close` in order to determine if we should
close the connection.
"""
path_portion, _, query_string = path.partition("?")
websockets.legacy.handshake.check_request(headers)
subprotocols = []
for header in headers.get_all("Sec-WebSocket-Protocol"):
subprotocols.extend([token.strip() for token in header.split(",")])
asgi_headers = [
(name.encode("ascii"), value.encode("ascii", errors="surrogateescape"))
for name, value in headers.raw_items()
]
self.scope = { # type: ignore[typeddict-item]
"type": "websocket",
"asgi": {"version": self.config.asgi_version, "spec_version": "2.3"},
"http_version": "1.1",
"scheme": self.scheme,
"server": self.server,
"client": self.client,
"root_path": self.root_path,
"path": unquote(path_portion),
"raw_path": path_portion.encode("ascii"),
"query_string": query_string.encode("ascii"),
"headers": asgi_headers,
"subprotocols": subprotocols,
"state": self.app_state.copy(),
}
task = self.loop.create_task(self.run_asgi())
task.add_done_callback(self.on_task_complete)
self.tasks.add(task)
await self.handshake_started_event.wait()
return self.initial_response
def process_subprotocol(
self, headers: Headers, available_subprotocols: Optional[Sequence[Subprotocol]]
) -> Optional[Subprotocol]:
"""
We override the standard 'process_subprotocol' behavior here so that
we return whatever subprotocol is sent in the 'accept' message.
"""
return self.accepted_subprotocol
def send_500_response(self) -> None:
msg = b"Internal Server Error"
content = [
b"HTTP/1.1 500 Internal Server Error\r\n"
b"content-type: text/plain; charset=utf-8\r\n",
b"content-length: " + str(len(msg)).encode("ascii") + b"\r\n",
b"connection: close\r\n",
b"\r\n",
msg,
]
self.transport.write(b"".join(content))
# Allow handler task to terminate cleanly, as websockets doesn't cancel it by
# itself (see https://github.com/encode/uvicorn/issues/920)
self.handshake_started_event.set()
async def ws_handler( # type: ignore[override]
self, protocol: WebSocketServerProtocol, path: str
) -> Any:
"""
This is the main handler function for the 'websockets' implementation
to call into. We just wait for close then return, and instead allow
'send' and 'receive' events to drive the flow.
"""
self.handshake_completed_event.set()
await self.closed_event.wait()
async def run_asgi(self) -> None:
"""
Wrapper around the ASGI callable, handling exceptions and unexpected
termination states.
"""
try:
result = await self.app(self.scope, self.asgi_receive, self.asgi_send)
except BaseException as exc:
self.closed_event.set()
msg = "Exception in ASGI application\n"
self.logger.error(msg, exc_info=exc)
if not self.handshake_started_event.is_set():
self.send_500_response()
else:
await self.handshake_completed_event.wait()
self.transport.close()
else:
self.closed_event.set()
if not self.handshake_started_event.is_set():
msg = "ASGI callable returned without sending handshake."
self.logger.error(msg)
self.send_500_response()
self.transport.close()
elif result is not None:
msg = "ASGI callable should return None, but returned '%s'."
self.logger.error(msg, result)
await self.handshake_completed_event.wait()
self.transport.close()
async def asgi_send(self, message: "ASGISendEvent") -> None:
message_type = message["type"]
if not self.handshake_started_event.is_set():
if message_type == "websocket.accept":
message = cast("WebSocketAcceptEvent", message)
self.logger.info(
'%s - "WebSocket %s" [accepted]',
self.scope["client"],
get_path_with_query_string(self.scope),
)
self.initial_response = None
self.accepted_subprotocol = cast(
Optional[Subprotocol], message.get("subprotocol")
)
if "headers" in message:
self.extra_headers.extend(
# ASGI spec requires bytes
# But for compatibility we need to convert it to strings
(name.decode("latin-1"), value.decode("latin-1"))
for name, value in message["headers"]
)
self.handshake_started_event.set()
elif message_type == "websocket.close":
message = cast("WebSocketCloseEvent", message)
self.logger.info(
'%s - "WebSocket %s" 403',
self.scope["client"],
get_path_with_query_string(self.scope),
)
self.initial_response = (http.HTTPStatus.FORBIDDEN, [], b"")
self.handshake_started_event.set()
self.closed_event.set()
else:
msg = (
"Expected ASGI message 'websocket.accept' or 'websocket.close', "
"but got '%s'."
)
raise RuntimeError(msg % message_type)
elif not self.closed_event.is_set():
await self.handshake_completed_event.wait()
if message_type == "websocket.send":
message = cast("WebSocketSendEvent", message)
bytes_data = message.get("bytes")
text_data = message.get("text")
data = text_data if bytes_data is None else bytes_data
await self.send(data) # type: ignore[arg-type]
elif message_type == "websocket.close":
message = cast("WebSocketCloseEvent", message)
code = message.get("code", 1000)
reason = message.get("reason", "") or ""
await self.close(code, reason)
self.closed_event.set()
else:
msg = (
"Expected ASGI message 'websocket.send' or 'websocket.close',"
" but got '%s'."
)
raise RuntimeError(msg % message_type)
else:
msg = "Unexpected ASGI message '%s', after sending 'websocket.close'."
raise RuntimeError(msg % message_type)
async def asgi_receive(
self,
) -> Union[
"WebSocketDisconnectEvent", "WebSocketConnectEvent", "WebSocketReceiveEvent"
]:
if not self.connect_sent:
self.connect_sent = True
return {"type": "websocket.connect"}
await self.handshake_completed_event.wait()
if self.lost_connection_before_handshake:
# If the handshake failed or the app closed before handshake completion,
# use 1006 Abnormal Closure.
return {"type": "websocket.disconnect", "code": 1006}
if self.closed_event.is_set():
return {"type": "websocket.disconnect", "code": 1005}
try:
data = await self.recv()
except ConnectionClosed as exc:
self.closed_event.set()
if self.ws_server.closing:
return {"type": "websocket.disconnect", "code": 1012}
return {"type": "websocket.disconnect", "code": exc.code}
msg: WebSocketReceiveEvent = { # type: ignore[typeddict-item]
"type": "websocket.receive"
}
if isinstance(data, str):
msg["text"] = data
else:
msg["bytes"] = data
return msg
| 13,784 | Python | 34.898437 | 87 | 0.580963 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/http/flow_control.py | import asyncio
import typing
if typing.TYPE_CHECKING:
from asgiref.typing import (
ASGIReceiveCallable,
ASGISendCallable,
HTTPResponseBodyEvent,
HTTPResponseStartEvent,
Scope,
)
CLOSE_HEADER = (b"connection", b"close")
HIGH_WATER_LIMIT = 65536
class FlowControl:
def __init__(self, transport: asyncio.Transport) -> None:
self._transport = transport
self.read_paused = False
self.write_paused = False
self._is_writable_event = asyncio.Event()
self._is_writable_event.set()
async def drain(self) -> None:
await self._is_writable_event.wait()
def pause_reading(self) -> None:
if not self.read_paused:
self.read_paused = True
self._transport.pause_reading()
def resume_reading(self) -> None:
if self.read_paused:
self.read_paused = False
self._transport.resume_reading()
def pause_writing(self) -> None:
if not self.write_paused:
self.write_paused = True
self._is_writable_event.clear()
def resume_writing(self) -> None:
if self.write_paused:
self.write_paused = False
self._is_writable_event.set()
async def service_unavailable(
scope: "Scope", receive: "ASGIReceiveCallable", send: "ASGISendCallable"
) -> None:
response_start: "HTTPResponseStartEvent" = {
"type": "http.response.start",
"status": 503,
"headers": [
(b"content-type", b"text/plain; charset=utf-8"),
(b"connection", b"close"),
],
}
await send(response_start)
response_body: "HTTPResponseBodyEvent" = {
"type": "http.response.body",
"body": b"Service Unavailable",
"more_body": False,
}
await send(response_body)
| 1,844 | Python | 25.73913 | 76 | 0.59436 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/http/auto.py | import asyncio
from typing import Type
AutoHTTPProtocol: Type[asyncio.Protocol]
try:
import httptools # noqa
except ImportError: # pragma: no cover
from uvicorn.protocols.http.h11_impl import H11Protocol
AutoHTTPProtocol = H11Protocol
else: # pragma: no cover
from uvicorn.protocols.http.httptools_impl import HttpToolsProtocol
AutoHTTPProtocol = HttpToolsProtocol
| 391 | Python | 25.133332 | 71 | 0.780051 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/http/h11_impl.py | import asyncio
import http
import logging
import sys
from typing import (
TYPE_CHECKING,
Any,
Callable,
Dict,
List,
Optional,
Tuple,
Union,
cast,
)
from urllib.parse import unquote
import h11
from h11._connection import DEFAULT_MAX_INCOMPLETE_EVENT_SIZE
from uvicorn.config import Config
from uvicorn.logging import TRACE_LOG_LEVEL
from uvicorn.protocols.http.flow_control import (
CLOSE_HEADER,
HIGH_WATER_LIMIT,
FlowControl,
service_unavailable,
)
from uvicorn.protocols.utils import (
get_client_addr,
get_local_addr,
get_path_with_query_string,
get_remote_addr,
is_ssl,
)
from uvicorn.server import ServerState
if sys.version_info < (3, 8): # pragma: py-gte-38
from typing_extensions import Literal
else: # pragma: py-lt-38
from typing import Literal
if TYPE_CHECKING:
from asgiref.typing import (
ASGI3Application,
ASGIReceiveEvent,
ASGISendEvent,
HTTPDisconnectEvent,
HTTPRequestEvent,
HTTPResponseBodyEvent,
HTTPResponseStartEvent,
HTTPScope,
)
H11Event = Union[
h11.Request,
h11.InformationalResponse,
h11.Response,
h11.Data,
h11.EndOfMessage,
h11.ConnectionClosed,
]
def _get_status_phrase(status_code: int) -> bytes:
try:
return http.HTTPStatus(status_code).phrase.encode()
except ValueError:
return b""
STATUS_PHRASES = {
status_code: _get_status_phrase(status_code) for status_code in range(100, 600)
}
class H11Protocol(asyncio.Protocol):
def __init__(
self,
config: Config,
server_state: ServerState,
app_state: Dict[str, Any],
_loop: Optional[asyncio.AbstractEventLoop] = None,
) -> None:
if not config.loaded:
config.load()
self.config = config
self.app = config.loaded_app
self.loop = _loop or asyncio.get_event_loop()
self.logger = logging.getLogger("uvicorn.error")
self.access_logger = logging.getLogger("uvicorn.access")
self.access_log = self.access_logger.hasHandlers()
self.conn = h11.Connection(
h11.SERVER,
config.h11_max_incomplete_event_size
if config.h11_max_incomplete_event_size is not None
else DEFAULT_MAX_INCOMPLETE_EVENT_SIZE,
)
self.ws_protocol_class = config.ws_protocol_class
self.root_path = config.root_path
self.limit_concurrency = config.limit_concurrency
self.app_state = app_state
# Timeouts
self.timeout_keep_alive_task: Optional[asyncio.TimerHandle] = None
self.timeout_keep_alive = config.timeout_keep_alive
# Shared server state
self.server_state = server_state
self.connections = server_state.connections
self.tasks = server_state.tasks
# Per-connection state
self.transport: asyncio.Transport = None # type: ignore[assignment]
self.flow: FlowControl = None # type: ignore[assignment]
self.server: Optional[Tuple[str, int]] = None
self.client: Optional[Tuple[str, int]] = None
self.scheme: Optional[Literal["http", "https"]] = None
# Per-request state
self.scope: HTTPScope = None # type: ignore[assignment]
self.headers: List[Tuple[bytes, bytes]] = None # type: ignore[assignment]
self.cycle: RequestResponseCycle = None # type: ignore[assignment]
# Protocol interface
def connection_made( # type: ignore[override]
self, transport: asyncio.Transport
) -> None:
self.connections.add(self)
self.transport = transport
self.flow = FlowControl(transport)
self.server = get_local_addr(transport)
self.client = get_remote_addr(transport)
self.scheme = "https" if is_ssl(transport) else "http"
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sHTTP connection made", prefix)
def connection_lost(self, exc: Optional[Exception]) -> None:
self.connections.discard(self)
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sHTTP connection lost", prefix)
if self.cycle and not self.cycle.response_complete:
self.cycle.disconnected = True
if self.conn.our_state != h11.ERROR:
event = h11.ConnectionClosed()
try:
self.conn.send(event)
except h11.LocalProtocolError:
# Premature client disconnect
pass
if self.cycle is not None:
self.cycle.message_event.set()
if self.flow is not None:
self.flow.resume_writing()
if exc is None:
self.transport.close()
self._unset_keepalive_if_required()
def eof_received(self) -> None:
pass
def _unset_keepalive_if_required(self) -> None:
if self.timeout_keep_alive_task is not None:
self.timeout_keep_alive_task.cancel()
self.timeout_keep_alive_task = None
def _get_upgrade(self) -> Optional[bytes]:
connection = []
upgrade = None
for name, value in self.headers:
if name == b"connection":
connection = [token.lower().strip() for token in value.split(b",")]
if name == b"upgrade":
upgrade = value.lower()
if b"upgrade" in connection:
return upgrade
return None
def _should_upgrade_to_ws(self) -> bool:
if self.ws_protocol_class is None:
if self.config.ws == "auto":
msg = "Unsupported upgrade request."
self.logger.warning(msg)
msg = "No supported WebSocket library detected. Please use 'pip install uvicorn[standard]', or install 'websockets' or 'wsproto' manually." # noqa: E501
self.logger.warning(msg)
return False
return True
def data_received(self, data: bytes) -> None:
self._unset_keepalive_if_required()
self.conn.receive_data(data)
self.handle_events()
def handle_events(self) -> None:
while True:
try:
event = self.conn.next_event()
except h11.RemoteProtocolError:
msg = "Invalid HTTP request received."
self.logger.warning(msg)
self.send_400_response(msg)
return
event_type = type(event)
if event_type is h11.NEED_DATA:
break
elif event_type is h11.PAUSED:
# This case can occur in HTTP pipelining, so we need to
# stop reading any more data, and ensure that at the end
# of the active request/response cycle we handle any
# events that have been buffered up.
self.flow.pause_reading()
break
elif event_type is h11.Request:
self.headers = [(key.lower(), value) for key, value in event.headers]
raw_path, _, query_string = event.target.partition(b"?")
self.scope = { # type: ignore[typeddict-item]
"type": "http",
"asgi": {
"version": self.config.asgi_version,
"spec_version": "2.3",
},
"http_version": event.http_version.decode("ascii"),
"server": self.server,
"client": self.client,
"scheme": self.scheme,
"method": event.method.decode("ascii"),
"root_path": self.root_path,
"path": unquote(raw_path.decode("ascii")),
"raw_path": raw_path,
"query_string": query_string,
"headers": self.headers,
"state": self.app_state.copy(),
}
upgrade = self._get_upgrade()
if upgrade == b"websocket" and self._should_upgrade_to_ws():
self.handle_websocket_upgrade(event)
return
# Handle 503 responses when 'limit_concurrency' is exceeded.
if self.limit_concurrency is not None and (
len(self.connections) >= self.limit_concurrency
or len(self.tasks) >= self.limit_concurrency
):
app = service_unavailable
message = "Exceeded concurrency limit."
self.logger.warning(message)
else:
app = self.app
self.cycle = RequestResponseCycle(
scope=self.scope,
conn=self.conn,
transport=self.transport,
flow=self.flow,
logger=self.logger,
access_logger=self.access_logger,
access_log=self.access_log,
default_headers=self.server_state.default_headers,
message_event=asyncio.Event(),
on_response=self.on_response_complete,
)
task = self.loop.create_task(self.cycle.run_asgi(app))
task.add_done_callback(self.tasks.discard)
self.tasks.add(task)
elif event_type is h11.Data:
if self.conn.our_state is h11.DONE:
continue
self.cycle.body += event.data
if len(self.cycle.body) > HIGH_WATER_LIMIT:
self.flow.pause_reading()
self.cycle.message_event.set()
elif event_type is h11.EndOfMessage:
if self.conn.our_state is h11.DONE:
self.transport.resume_reading()
self.conn.start_next_cycle()
continue
self.cycle.more_body = False
self.cycle.message_event.set()
def handle_websocket_upgrade(self, event: H11Event) -> None:
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sUpgrading to WebSocket", prefix)
self.connections.discard(self)
output = [event.method, b" ", event.target, b" HTTP/1.1\r\n"]
for name, value in self.headers:
output += [name, b": ", value, b"\r\n"]
output.append(b"\r\n")
protocol = self.ws_protocol_class( # type: ignore[call-arg, misc]
config=self.config,
server_state=self.server_state,
app_state=self.app_state,
)
protocol.connection_made(self.transport)
protocol.data_received(b"".join(output))
self.transport.set_protocol(protocol)
def send_400_response(self, msg: str) -> None:
reason = STATUS_PHRASES[400]
headers = [
(b"content-type", b"text/plain; charset=utf-8"),
(b"connection", b"close"),
]
event = h11.Response(status_code=400, headers=headers, reason=reason)
output = self.conn.send(event)
self.transport.write(output)
event = h11.Data(data=msg.encode("ascii"))
output = self.conn.send(event)
self.transport.write(output)
event = h11.EndOfMessage()
output = self.conn.send(event)
self.transport.write(output)
self.transport.close()
def on_response_complete(self) -> None:
self.server_state.total_requests += 1
if self.transport.is_closing():
return
# Set a short Keep-Alive timeout.
self._unset_keepalive_if_required()
self.timeout_keep_alive_task = self.loop.call_later(
self.timeout_keep_alive, self.timeout_keep_alive_handler
)
# Unpause data reads if needed.
self.flow.resume_reading()
# Unblock any pipelined events.
if self.conn.our_state is h11.DONE and self.conn.their_state is h11.DONE:
self.conn.start_next_cycle()
self.handle_events()
def shutdown(self) -> None:
"""
Called by the server to commence a graceful shutdown.
"""
if self.cycle is None or self.cycle.response_complete:
event = h11.ConnectionClosed()
self.conn.send(event)
self.transport.close()
else:
self.cycle.keep_alive = False
def pause_writing(self) -> None:
"""
Called by the transport when the write buffer exceeds the high water mark.
"""
self.flow.pause_writing()
def resume_writing(self) -> None:
"""
Called by the transport when the write buffer drops below the low water mark.
"""
self.flow.resume_writing()
def timeout_keep_alive_handler(self) -> None:
"""
Called on a keep-alive connection if no new data is received after a short
delay.
"""
if not self.transport.is_closing():
event = h11.ConnectionClosed()
self.conn.send(event)
self.transport.close()
class RequestResponseCycle:
def __init__(
self,
scope: "HTTPScope",
conn: h11.Connection,
transport: asyncio.Transport,
flow: FlowControl,
logger: logging.Logger,
access_logger: logging.Logger,
access_log: bool,
default_headers: List[Tuple[bytes, bytes]],
message_event: asyncio.Event,
on_response: Callable[..., None],
) -> None:
self.scope = scope
self.conn = conn
self.transport = transport
self.flow = flow
self.logger = logger
self.access_logger = access_logger
self.access_log = access_log
self.default_headers = default_headers
self.message_event = message_event
self.on_response = on_response
# Connection state
self.disconnected = False
self.keep_alive = True
self.waiting_for_100_continue = conn.they_are_waiting_for_100_continue
# Request state
self.body = b""
self.more_body = True
# Response state
self.response_started = False
self.response_complete = False
# ASGI exception wrapper
async def run_asgi(self, app: "ASGI3Application") -> None:
try:
result = await app( # type: ignore[func-returns-value]
self.scope, self.receive, self.send
)
except BaseException as exc:
msg = "Exception in ASGI application\n"
self.logger.error(msg, exc_info=exc)
if not self.response_started:
await self.send_500_response()
else:
self.transport.close()
else:
if result is not None:
msg = "ASGI callable should return None, but returned '%s'."
self.logger.error(msg, result)
self.transport.close()
elif not self.response_started and not self.disconnected:
msg = "ASGI callable returned without starting response."
self.logger.error(msg)
await self.send_500_response()
elif not self.response_complete and not self.disconnected:
msg = "ASGI callable returned without completing response."
self.logger.error(msg)
self.transport.close()
finally:
self.on_response = lambda: None
async def send_500_response(self) -> None:
response_start_event: "HTTPResponseStartEvent" = {
"type": "http.response.start",
"status": 500,
"headers": [
(b"content-type", b"text/plain; charset=utf-8"),
(b"connection", b"close"),
],
}
await self.send(response_start_event)
response_body_event: "HTTPResponseBodyEvent" = {
"type": "http.response.body",
"body": b"Internal Server Error",
"more_body": False,
}
await self.send(response_body_event)
# ASGI interface
async def send(self, message: "ASGISendEvent") -> None:
message_type = message["type"]
if self.flow.write_paused and not self.disconnected:
await self.flow.drain()
if self.disconnected:
return
if not self.response_started:
# Sending response status line and headers
if message_type != "http.response.start":
msg = "Expected ASGI message 'http.response.start', but got '%s'."
raise RuntimeError(msg % message_type)
message = cast("HTTPResponseStartEvent", message)
self.response_started = True
self.waiting_for_100_continue = False
status_code = message["status"]
headers = self.default_headers + list(message.get("headers", []))
if CLOSE_HEADER in self.scope["headers"] and CLOSE_HEADER not in headers:
headers = headers + [CLOSE_HEADER]
if self.access_log:
self.access_logger.info(
'%s - "%s %s HTTP/%s" %d',
get_client_addr(self.scope),
self.scope["method"],
get_path_with_query_string(self.scope),
self.scope["http_version"],
status_code,
)
# Write response status line and headers
reason = STATUS_PHRASES[status_code]
event = h11.Response(
status_code=status_code, headers=headers, reason=reason
)
output = self.conn.send(event)
self.transport.write(output)
elif not self.response_complete:
# Sending response body
if message_type != "http.response.body":
msg = "Expected ASGI message 'http.response.body', but got '%s'."
raise RuntimeError(msg % message_type)
message = cast("HTTPResponseBodyEvent", message)
body = message.get("body", b"")
more_body = message.get("more_body", False)
# Write response body
if self.scope["method"] == "HEAD":
event = h11.Data(data=b"")
else:
event = h11.Data(data=body)
output = self.conn.send(event)
self.transport.write(output)
# Handle response completion
if not more_body:
self.response_complete = True
self.message_event.set()
event = h11.EndOfMessage()
output = self.conn.send(event)
self.transport.write(output)
else:
# Response already sent
msg = "Unexpected ASGI message '%s' sent, after response already completed."
raise RuntimeError(msg % message_type)
if self.response_complete:
if self.conn.our_state is h11.MUST_CLOSE or not self.keep_alive:
event = h11.ConnectionClosed()
self.conn.send(event)
self.transport.close()
self.on_response()
async def receive(self) -> "ASGIReceiveEvent":
if self.waiting_for_100_continue and not self.transport.is_closing():
event = h11.InformationalResponse(
status_code=100, headers=[], reason="Continue"
)
output = self.conn.send(event)
self.transport.write(output)
self.waiting_for_100_continue = False
if not self.disconnected and not self.response_complete:
self.flow.resume_reading()
await self.message_event.wait()
self.message_event.clear()
message: "Union[HTTPDisconnectEvent, HTTPRequestEvent]"
if self.disconnected or self.response_complete:
message = {"type": "http.disconnect"}
else:
message = {
"type": "http.request",
"body": self.body,
"more_body": self.more_body,
}
self.body = b""
return message
| 20,487 | Python | 34.324138 | 169 | 0.559574 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/uvicorn/protocols/http/httptools_impl.py | import asyncio
import http
import logging
import re
import sys
import urllib
from asyncio.events import TimerHandle
from collections import deque
from typing import (
TYPE_CHECKING,
Any,
Callable,
Deque,
Dict,
List,
Optional,
Tuple,
Union,
cast,
)
import httptools
from uvicorn.config import Config
from uvicorn.logging import TRACE_LOG_LEVEL
from uvicorn.protocols.http.flow_control import (
CLOSE_HEADER,
HIGH_WATER_LIMIT,
FlowControl,
service_unavailable,
)
from uvicorn.protocols.utils import (
get_client_addr,
get_local_addr,
get_path_with_query_string,
get_remote_addr,
is_ssl,
)
from uvicorn.server import ServerState
if sys.version_info < (3, 8): # pragma: py-gte-38
from typing_extensions import Literal
else: # pragma: py-lt-38
from typing import Literal
if TYPE_CHECKING:
from asgiref.typing import (
ASGI3Application,
ASGIReceiveEvent,
ASGISendEvent,
HTTPDisconnectEvent,
HTTPRequestEvent,
HTTPResponseBodyEvent,
HTTPResponseStartEvent,
HTTPScope,
)
HEADER_RE = re.compile(b'[\x00-\x1F\x7F()<>@,;:[]={} \t\\"]')
HEADER_VALUE_RE = re.compile(b"[\x00-\x1F\x7F]")
def _get_status_line(status_code: int) -> bytes:
try:
phrase = http.HTTPStatus(status_code).phrase.encode()
except ValueError:
phrase = b""
return b"".join([b"HTTP/1.1 ", str(status_code).encode(), b" ", phrase, b"\r\n"])
STATUS_LINE = {
status_code: _get_status_line(status_code) for status_code in range(100, 600)
}
class HttpToolsProtocol(asyncio.Protocol):
def __init__(
self,
config: Config,
server_state: ServerState,
app_state: Dict[str, Any],
_loop: Optional[asyncio.AbstractEventLoop] = None,
) -> None:
if not config.loaded:
config.load()
self.config = config
self.app = config.loaded_app
self.loop = _loop or asyncio.get_event_loop()
self.logger = logging.getLogger("uvicorn.error")
self.access_logger = logging.getLogger("uvicorn.access")
self.access_log = self.access_logger.hasHandlers()
self.parser = httptools.HttpRequestParser(self)
self.ws_protocol_class = config.ws_protocol_class
self.root_path = config.root_path
self.limit_concurrency = config.limit_concurrency
self.app_state = app_state
# Timeouts
self.timeout_keep_alive_task: Optional[TimerHandle] = None
self.timeout_keep_alive = config.timeout_keep_alive
# Global state
self.server_state = server_state
self.connections = server_state.connections
self.tasks = server_state.tasks
# Per-connection state
self.transport: asyncio.Transport = None # type: ignore[assignment]
self.flow: FlowControl = None # type: ignore[assignment]
self.server: Optional[Tuple[str, int]] = None
self.client: Optional[Tuple[str, int]] = None
self.scheme: Optional[Literal["http", "https"]] = None
self.pipeline: Deque[Tuple[RequestResponseCycle, ASGI3Application]] = deque()
# Per-request state
self.scope: HTTPScope = None # type: ignore[assignment]
self.headers: List[Tuple[bytes, bytes]] = None # type: ignore[assignment]
self.expect_100_continue = False
self.cycle: RequestResponseCycle = None # type: ignore[assignment]
# Protocol interface
def connection_made( # type: ignore[override]
self, transport: asyncio.Transport
) -> None:
self.connections.add(self)
self.transport = transport
self.flow = FlowControl(transport)
self.server = get_local_addr(transport)
self.client = get_remote_addr(transport)
self.scheme = "https" if is_ssl(transport) else "http"
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sHTTP connection made", prefix)
def connection_lost(self, exc: Optional[Exception]) -> None:
self.connections.discard(self)
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sHTTP connection lost", prefix)
if self.cycle and not self.cycle.response_complete:
self.cycle.disconnected = True
if self.cycle is not None:
self.cycle.message_event.set()
if self.flow is not None:
self.flow.resume_writing()
if exc is None:
self.transport.close()
self._unset_keepalive_if_required()
self.parser = None
def eof_received(self) -> None:
pass
def _unset_keepalive_if_required(self) -> None:
if self.timeout_keep_alive_task is not None:
self.timeout_keep_alive_task.cancel()
self.timeout_keep_alive_task = None
def _get_upgrade(self) -> Optional[bytes]:
connection = []
upgrade = None
for name, value in self.headers:
if name == b"connection":
connection = [token.lower().strip() for token in value.split(b",")]
if name == b"upgrade":
upgrade = value.lower()
if b"upgrade" in connection:
return upgrade
return None
def _should_upgrade_to_ws(self, upgrade: Optional[bytes]) -> bool:
if upgrade == b"websocket" and self.ws_protocol_class is not None:
return True
if self.config.ws == "auto":
msg = "Unsupported upgrade request."
self.logger.warning(msg)
msg = "No supported WebSocket library detected. Please use 'pip install uvicorn[standard]', or install 'websockets' or 'wsproto' manually." # noqa: E501
self.logger.warning(msg)
return False
def _should_upgrade(self) -> bool:
upgrade = self._get_upgrade()
return self._should_upgrade_to_ws(upgrade)
def data_received(self, data: bytes) -> None:
self._unset_keepalive_if_required()
try:
self.parser.feed_data(data)
except httptools.HttpParserError:
msg = "Invalid HTTP request received."
self.logger.warning(msg)
self.send_400_response(msg)
return
except httptools.HttpParserUpgrade:
upgrade = self._get_upgrade()
if self._should_upgrade_to_ws(upgrade):
self.handle_websocket_upgrade()
def handle_websocket_upgrade(self) -> None:
if self.logger.level <= TRACE_LOG_LEVEL:
prefix = "%s:%d - " % self.client if self.client else ""
self.logger.log(TRACE_LOG_LEVEL, "%sUpgrading to WebSocket", prefix)
self.connections.discard(self)
method = self.scope["method"].encode()
output = [method, b" ", self.url, b" HTTP/1.1\r\n"]
for name, value in self.scope["headers"]:
output += [name, b": ", value, b"\r\n"]
output.append(b"\r\n")
protocol = self.ws_protocol_class( # type: ignore[call-arg, misc]
config=self.config,
server_state=self.server_state,
app_state=self.app_state,
)
protocol.connection_made(self.transport)
protocol.data_received(b"".join(output))
self.transport.set_protocol(protocol)
def send_400_response(self, msg: str) -> None:
content = [STATUS_LINE[400]]
for name, value in self.server_state.default_headers:
content.extend([name, b": ", value, b"\r\n"])
content.extend(
[
b"content-type: text/plain; charset=utf-8\r\n",
b"content-length: " + str(len(msg)).encode("ascii") + b"\r\n",
b"connection: close\r\n",
b"\r\n",
msg.encode("ascii"),
]
)
self.transport.write(b"".join(content))
self.transport.close()
def on_message_begin(self) -> None:
self.url = b""
self.expect_100_continue = False
self.headers = []
self.scope = { # type: ignore[typeddict-item]
"type": "http",
"asgi": {"version": self.config.asgi_version, "spec_version": "2.3"},
"http_version": "1.1",
"server": self.server,
"client": self.client,
"scheme": self.scheme,
"root_path": self.root_path,
"headers": self.headers,
"state": self.app_state.copy(),
}
# Parser callbacks
def on_url(self, url: bytes) -> None:
self.url += url
def on_header(self, name: bytes, value: bytes) -> None:
name = name.lower()
if name == b"expect" and value.lower() == b"100-continue":
self.expect_100_continue = True
self.headers.append((name, value))
def on_headers_complete(self) -> None:
http_version = self.parser.get_http_version()
method = self.parser.get_method()
self.scope["method"] = method.decode("ascii")
if http_version != "1.1":
self.scope["http_version"] = http_version
if self.parser.should_upgrade() and self._should_upgrade():
return
parsed_url = httptools.parse_url(self.url)
raw_path = parsed_url.path
path = raw_path.decode("ascii")
if "%" in path:
path = urllib.parse.unquote(path)
self.scope["path"] = path
self.scope["raw_path"] = raw_path
self.scope["query_string"] = parsed_url.query or b""
# Handle 503 responses when 'limit_concurrency' is exceeded.
if self.limit_concurrency is not None and (
len(self.connections) >= self.limit_concurrency
or len(self.tasks) >= self.limit_concurrency
):
app = service_unavailable
message = "Exceeded concurrency limit."
self.logger.warning(message)
else:
app = self.app
existing_cycle = self.cycle
self.cycle = RequestResponseCycle(
scope=self.scope,
transport=self.transport,
flow=self.flow,
logger=self.logger,
access_logger=self.access_logger,
access_log=self.access_log,
default_headers=self.server_state.default_headers,
message_event=asyncio.Event(),
expect_100_continue=self.expect_100_continue,
keep_alive=http_version != "1.0",
on_response=self.on_response_complete,
)
if existing_cycle is None or existing_cycle.response_complete:
# Standard case - start processing the request.
task = self.loop.create_task(self.cycle.run_asgi(app))
task.add_done_callback(self.tasks.discard)
self.tasks.add(task)
else:
# Pipelined HTTP requests need to be queued up.
self.flow.pause_reading()
self.pipeline.appendleft((self.cycle, app))
def on_body(self, body: bytes) -> None:
if (
self.parser.should_upgrade() and self._should_upgrade()
) or self.cycle.response_complete:
return
self.cycle.body += body
if len(self.cycle.body) > HIGH_WATER_LIMIT:
self.flow.pause_reading()
self.cycle.message_event.set()
def on_message_complete(self) -> None:
if (
self.parser.should_upgrade() and self._should_upgrade()
) or self.cycle.response_complete:
return
self.cycle.more_body = False
self.cycle.message_event.set()
def on_response_complete(self) -> None:
# Callback for pipelined HTTP requests to be started.
self.server_state.total_requests += 1
if self.transport.is_closing():
return
# Set a short Keep-Alive timeout.
self._unset_keepalive_if_required()
self.timeout_keep_alive_task = self.loop.call_later(
self.timeout_keep_alive, self.timeout_keep_alive_handler
)
# Unpause data reads if needed.
self.flow.resume_reading()
# Unblock any pipelined events.
if self.pipeline:
cycle, app = self.pipeline.pop()
task = self.loop.create_task(cycle.run_asgi(app))
task.add_done_callback(self.tasks.discard)
self.tasks.add(task)
def shutdown(self) -> None:
"""
Called by the server to commence a graceful shutdown.
"""
if self.cycle is None or self.cycle.response_complete:
self.transport.close()
else:
self.cycle.keep_alive = False
def pause_writing(self) -> None:
"""
Called by the transport when the write buffer exceeds the high water mark.
"""
self.flow.pause_writing()
def resume_writing(self) -> None:
"""
Called by the transport when the write buffer drops below the low water mark.
"""
self.flow.resume_writing()
def timeout_keep_alive_handler(self) -> None:
"""
Called on a keep-alive connection if no new data is received after a short
delay.
"""
if not self.transport.is_closing():
self.transport.close()
class RequestResponseCycle:
def __init__(
self,
scope: "HTTPScope",
transport: asyncio.Transport,
flow: FlowControl,
logger: logging.Logger,
access_logger: logging.Logger,
access_log: bool,
default_headers: List[Tuple[bytes, bytes]],
message_event: asyncio.Event,
expect_100_continue: bool,
keep_alive: bool,
on_response: Callable[..., None],
):
self.scope = scope
self.transport = transport
self.flow = flow
self.logger = logger
self.access_logger = access_logger
self.access_log = access_log
self.default_headers = default_headers
self.message_event = message_event
self.on_response = on_response
# Connection state
self.disconnected = False
self.keep_alive = keep_alive
self.waiting_for_100_continue = expect_100_continue
# Request state
self.body = b""
self.more_body = True
# Response state
self.response_started = False
self.response_complete = False
self.chunked_encoding: Optional[bool] = None
self.expected_content_length = 0
# ASGI exception wrapper
async def run_asgi(self, app: "ASGI3Application") -> None:
try:
result = await app( # type: ignore[func-returns-value]
self.scope, self.receive, self.send
)
except BaseException as exc:
msg = "Exception in ASGI application\n"
self.logger.error(msg, exc_info=exc)
if not self.response_started:
await self.send_500_response()
else:
self.transport.close()
else:
if result is not None:
msg = "ASGI callable should return None, but returned '%s'."
self.logger.error(msg, result)
self.transport.close()
elif not self.response_started and not self.disconnected:
msg = "ASGI callable returned without starting response."
self.logger.error(msg)
await self.send_500_response()
elif not self.response_complete and not self.disconnected:
msg = "ASGI callable returned without completing response."
self.logger.error(msg)
self.transport.close()
finally:
self.on_response = lambda: None
async def send_500_response(self) -> None:
response_start_event: "HTTPResponseStartEvent" = {
"type": "http.response.start",
"status": 500,
"headers": [
(b"content-type", b"text/plain; charset=utf-8"),
(b"connection", b"close"),
],
}
await self.send(response_start_event)
response_body_event: "HTTPResponseBodyEvent" = {
"type": "http.response.body",
"body": b"Internal Server Error",
"more_body": False,
}
await self.send(response_body_event)
# ASGI interface
async def send(self, message: "ASGISendEvent") -> None:
message_type = message["type"]
if self.flow.write_paused and not self.disconnected:
await self.flow.drain()
if self.disconnected:
return
if not self.response_started:
# Sending response status line and headers
if message_type != "http.response.start":
msg = "Expected ASGI message 'http.response.start', but got '%s'."
raise RuntimeError(msg % message_type)
message = cast("HTTPResponseStartEvent", message)
self.response_started = True
self.waiting_for_100_continue = False
status_code = message["status"]
headers = self.default_headers + list(message.get("headers", []))
if CLOSE_HEADER in self.scope["headers"] and CLOSE_HEADER not in headers:
headers = headers + [CLOSE_HEADER]
if self.access_log:
self.access_logger.info(
'%s - "%s %s HTTP/%s" %d',
get_client_addr(self.scope),
self.scope["method"],
get_path_with_query_string(self.scope),
self.scope["http_version"],
status_code,
)
# Write response status line and headers
content = [STATUS_LINE[status_code]]
for name, value in headers:
if HEADER_RE.search(name):
raise RuntimeError("Invalid HTTP header name.")
if HEADER_VALUE_RE.search(value):
raise RuntimeError("Invalid HTTP header value.")
name = name.lower()
if name == b"content-length" and self.chunked_encoding is None:
self.expected_content_length = int(value.decode())
self.chunked_encoding = False
elif name == b"transfer-encoding" and value.lower() == b"chunked":
self.expected_content_length = 0
self.chunked_encoding = True
elif name == b"connection" and value.lower() == b"close":
self.keep_alive = False
content.extend([name, b": ", value, b"\r\n"])
if (
self.chunked_encoding is None
and self.scope["method"] != "HEAD"
and status_code not in (204, 304)
):
# Neither content-length nor transfer-encoding specified
self.chunked_encoding = True
content.append(b"transfer-encoding: chunked\r\n")
content.append(b"\r\n")
self.transport.write(b"".join(content))
elif not self.response_complete:
# Sending response body
if message_type != "http.response.body":
msg = "Expected ASGI message 'http.response.body', but got '%s'."
raise RuntimeError(msg % message_type)
body = cast(bytes, message.get("body", b""))
more_body = message.get("more_body", False)
# Write response body
if self.scope["method"] == "HEAD":
self.expected_content_length = 0
elif self.chunked_encoding:
if body:
content = [b"%x\r\n" % len(body), body, b"\r\n"]
else:
content = []
if not more_body:
content.append(b"0\r\n\r\n")
self.transport.write(b"".join(content))
else:
num_bytes = len(body)
if num_bytes > self.expected_content_length:
raise RuntimeError("Response content longer than Content-Length")
else:
self.expected_content_length -= num_bytes
self.transport.write(body)
# Handle response completion
if not more_body:
if self.expected_content_length != 0:
raise RuntimeError("Response content shorter than Content-Length")
self.response_complete = True
self.message_event.set()
if not self.keep_alive:
self.transport.close()
self.on_response()
else:
# Response already sent
msg = "Unexpected ASGI message '%s' sent, after response already completed."
raise RuntimeError(msg % message_type)
async def receive(self) -> "ASGIReceiveEvent":
if self.waiting_for_100_continue and not self.transport.is_closing():
self.transport.write(b"HTTP/1.1 100 Continue\r\n\r\n")
self.waiting_for_100_continue = False
if not self.disconnected and not self.response_complete:
self.flow.resume_reading()
await self.message_event.wait()
self.message_event.clear()
message: "Union[HTTPDisconnectEvent, HTTPRequestEvent]"
if self.disconnected or self.response_complete:
message = {"type": "http.disconnect"}
else:
message = {
"type": "http.request",
"body": self.body,
"more_body": self.more_body,
}
self.body = b""
return message
| 21,866 | Python | 34.730392 | 165 | 0.570017 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/multipart/exceptions.py | class FormParserError(ValueError):
"""Base error class for our form parser."""
pass
class ParseError(FormParserError):
"""This exception (or a subclass) is raised when there is an error while
parsing something.
"""
#: This is the offset in the input data chunk (*NOT* the overall stream) in
#: which the parse error occurred. It will be -1 if not specified.
offset = -1
class MultipartParseError(ParseError):
"""This is a specific error that is raised when the MultipartParser detects
an error while parsing.
"""
pass
class QuerystringParseError(ParseError):
"""This is a specific error that is raised when the QuerystringParser
detects an error while parsing.
"""
pass
class DecodeError(ParseError):
"""This exception is raised when there is a decoding error - for example
with the Base64Decoder or QuotedPrintableDecoder.
"""
pass
# On Python 3.3, IOError is the same as OSError, so we don't want to inherit
# from both of them. We handle this case below.
if IOError is not OSError: # pragma: no cover
class FileError(FormParserError, IOError, OSError):
"""Exception class for problems with the File class."""
pass
else: # pragma: no cover
class FileError(FormParserError, OSError):
"""Exception class for problems with the File class."""
pass
| 1,410 | Python | 29.021276 | 79 | 0.678723 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/multipart/multipart.py | from .decoders import *
from .exceptions import *
import os
import re
import sys
import shutil
import logging
import tempfile
from io import BytesIO
from numbers import Number
# Unique missing object.
_missing = object()
# States for the querystring parser.
STATE_BEFORE_FIELD = 0
STATE_FIELD_NAME = 1
STATE_FIELD_DATA = 2
# States for the multipart parser
STATE_START = 0
STATE_START_BOUNDARY = 1
STATE_HEADER_FIELD_START = 2
STATE_HEADER_FIELD = 3
STATE_HEADER_VALUE_START = 4
STATE_HEADER_VALUE = 5
STATE_HEADER_VALUE_ALMOST_DONE = 6
STATE_HEADERS_ALMOST_DONE = 7
STATE_PART_DATA_START = 8
STATE_PART_DATA = 9
STATE_PART_DATA_END = 10
STATE_END = 11
STATES = [
"START",
"START_BOUNDARY", "HEADER_FIELD_START", "HEADER_FIELD", "HEADER_VALUE_START", "HEADER_VALUE",
"HEADER_VALUE_ALMOST_DONE", "HEADRES_ALMOST_DONE", "PART_DATA_START", "PART_DATA", "PART_DATA_END", "END"
]
# Flags for the multipart parser.
FLAG_PART_BOUNDARY = 1
FLAG_LAST_BOUNDARY = 2
# Get constants. Since iterating over a str on Python 2 gives you a 1-length
# string, but iterating over a bytes object on Python 3 gives you an integer,
# we need to save these constants.
CR = b'\r'[0]
LF = b'\n'[0]
COLON = b':'[0]
SPACE = b' '[0]
HYPHEN = b'-'[0]
AMPERSAND = b'&'[0]
SEMICOLON = b';'[0]
LOWER_A = b'a'[0]
LOWER_Z = b'z'[0]
NULL = b'\x00'[0]
# Lower-casing a character is different, because of the difference between
# str on Py2, and bytes on Py3. Same with getting the ordinal value of a byte,
# and joining a list of bytes together.
# These functions abstract that.
lower_char = lambda c: c | 0x20
ord_char = lambda c: c
join_bytes = lambda b: bytes(list(b))
# These are regexes for parsing header values.
SPECIAL_CHARS = re.escape(b'()<>@,;:\\"/[]?={} \t')
QUOTED_STR = br'"(?:\\.|[^"])*"'
VALUE_STR = br'(?:[^' + SPECIAL_CHARS + br']+|' + QUOTED_STR + br')'
OPTION_RE_STR = (
br'(?:;|^)\s*([^' + SPECIAL_CHARS + br']+)\s*=\s*(' + VALUE_STR + br')'
)
OPTION_RE = re.compile(OPTION_RE_STR)
QUOTE = b'"'[0]
def parse_options_header(value):
"""
Parses a Content-Type header into a value in the following format:
(content_type, {parameters})
"""
if not value:
return (b'', {})
# If we are passed a string, we assume that it conforms to WSGI and does
# not contain any code point that's not in latin-1.
if isinstance(value, str): # pragma: no cover
value = value.encode('latin-1')
# If we have no options, return the string as-is.
if b';' not in value:
return (value.lower().strip(), {})
# Split at the first semicolon, to get our value and then options.
ctype, rest = value.split(b';', 1)
options = {}
# Parse the options.
for match in OPTION_RE.finditer(rest):
key = match.group(1).lower()
value = match.group(2)
if value[0] == QUOTE and value[-1] == QUOTE:
# Unquote the value.
value = value[1:-1]
value = value.replace(b'\\\\', b'\\').replace(b'\\"', b'"')
# If the value is a filename, we need to fix a bug on IE6 that sends
# the full file path instead of the filename.
if key == b'filename':
if value[1:3] == b':\\' or value[:2] == b'\\\\':
value = value.split(b'\\')[-1]
options[key] = value
return ctype, options
class Field:
"""A Field object represents a (parsed) form field. It represents a single
field with a corresponding name and value.
The name that a :class:`Field` will be instantiated with is the same name
that would be found in the following HTML::
<input name="name_goes_here" type="text"/>
This class defines two methods, :meth:`on_data` and :meth:`on_end`, that
will be called when data is written to the Field, and when the Field is
finalized, respectively.
:param name: the name of the form field
"""
def __init__(self, name):
self._name = name
self._value = []
# We cache the joined version of _value for speed.
self._cache = _missing
@classmethod
def from_value(klass, name, value):
"""Create an instance of a :class:`Field`, and set the corresponding
value - either None or an actual value. This method will also
finalize the Field itself.
:param name: the name of the form field
:param value: the value of the form field - either a bytestring or
None
"""
f = klass(name)
if value is None:
f.set_none()
else:
f.write(value)
f.finalize()
return f
def write(self, data):
"""Write some data into the form field.
:param data: a bytestring
"""
return self.on_data(data)
def on_data(self, data):
"""This method is a callback that will be called whenever data is
written to the Field.
:param data: a bytestring
"""
self._value.append(data)
self._cache = _missing
return len(data)
def on_end(self):
"""This method is called whenever the Field is finalized.
"""
if self._cache is _missing:
self._cache = b''.join(self._value)
def finalize(self):
"""Finalize the form field.
"""
self.on_end()
def close(self):
"""Close the Field object. This will free any underlying cache.
"""
# Free our value array.
if self._cache is _missing:
self._cache = b''.join(self._value)
del self._value
def set_none(self):
"""Some fields in a querystring can possibly have a value of None - for
example, the string "foo&bar=&baz=asdf" will have a field with the
name "foo" and value None, one with name "bar" and value "", and one
with name "baz" and value "asdf". Since the write() interface doesn't
support writing None, this function will set the field value to None.
"""
self._cache = None
@property
def field_name(self):
"""This property returns the name of the field."""
return self._name
@property
def value(self):
"""This property returns the value of the form field."""
if self._cache is _missing:
self._cache = b''.join(self._value)
return self._cache
def __eq__(self, other):
if isinstance(other, Field):
return (
self.field_name == other.field_name and
self.value == other.value
)
else:
return NotImplemented
def __repr__(self):
if len(self.value) > 97:
# We get the repr, and then insert three dots before the final
# quote.
v = repr(self.value[:97])[:-1] + "...'"
else:
v = repr(self.value)
return "{}(field_name={!r}, value={})".format(
self.__class__.__name__,
self.field_name,
v
)
class File:
"""This class represents an uploaded file. It handles writing file data to
either an in-memory file or a temporary file on-disk, if the optional
threshold is passed.
There are some options that can be passed to the File to change behavior
of the class. Valid options are as follows:
.. list-table::
:widths: 15 5 5 30
:header-rows: 1
* - Name
- Type
- Default
- Description
* - UPLOAD_DIR
- `str`
- None
- The directory to store uploaded files in. If this is None, a
temporary file will be created in the system's standard location.
* - UPLOAD_DELETE_TMP
- `bool`
- True
- Delete automatically created TMP file
* - UPLOAD_KEEP_FILENAME
- `bool`
- False
- Whether or not to keep the filename of the uploaded file. If True,
then the filename will be converted to a safe representation (e.g.
by removing any invalid path segments), and then saved with the
same name). Otherwise, a temporary name will be used.
* - UPLOAD_KEEP_EXTENSIONS
- `bool`
- False
- Whether or not to keep the uploaded file's extension. If False, the
file will be saved with the default temporary extension (usually
".tmp"). Otherwise, the file's extension will be maintained. Note
that this will properly combine with the UPLOAD_KEEP_FILENAME
setting.
* - MAX_MEMORY_FILE_SIZE
- `int`
- 1 MiB
- The maximum number of bytes of a File to keep in memory. By
default, the contents of a File are kept into memory until a certain
limit is reached, after which the contents of the File are written
to a temporary file. This behavior can be disabled by setting this
value to an appropriately large value (or, for example, infinity,
such as `float('inf')`.
:param file_name: The name of the file that this :class:`File` represents
:param field_name: The field name that uploaded this file. Note that this
can be None, if, for example, the file was uploaded
with Content-Type application/octet-stream
:param config: The configuration for this File. See above for valid
configuration keys and their corresponding values.
"""
def __init__(self, file_name, field_name=None, config={}):
# Save configuration, set other variables default.
self.logger = logging.getLogger(__name__)
self._config = config
self._in_memory = True
self._bytes_written = 0
self._fileobj = BytesIO()
# Save the provided field/file name.
self._field_name = field_name
self._file_name = file_name
# Our actual file name is None by default, since, depending on our
# config, we may not actually use the provided name.
self._actual_file_name = None
# Split the extension from the filename.
if file_name is not None:
base, ext = os.path.splitext(file_name)
self._file_base = base
self._ext = ext
@property
def field_name(self):
"""The form field associated with this file. May be None if there isn't
one, for example when we have an application/octet-stream upload.
"""
return self._field_name
@property
def file_name(self):
"""The file name given in the upload request.
"""
return self._file_name
@property
def actual_file_name(self):
"""The file name that this file is saved as. Will be None if it's not
currently saved on disk.
"""
return self._actual_file_name
@property
def file_object(self):
"""The file object that we're currently writing to. Note that this
will either be an instance of a :class:`io.BytesIO`, or a regular file
object.
"""
return self._fileobj
@property
def size(self):
"""The total size of this file, counted as the number of bytes that
currently have been written to the file.
"""
return self._bytes_written
@property
def in_memory(self):
"""A boolean representing whether or not this file object is currently
stored in-memory or on-disk.
"""
return self._in_memory
def flush_to_disk(self):
"""If the file is already on-disk, do nothing. Otherwise, copy from
the in-memory buffer to a disk file, and then reassign our internal
file object to this new disk file.
Note that if you attempt to flush a file that is already on-disk, a
warning will be logged to this module's logger.
"""
if not self._in_memory:
self.logger.warning(
"Trying to flush to disk when we're not in memory"
)
return
# Go back to the start of our file.
self._fileobj.seek(0)
# Open a new file.
new_file = self._get_disk_file()
# Copy the file objects.
shutil.copyfileobj(self._fileobj, new_file)
# Seek to the new position in our new file.
new_file.seek(self._bytes_written)
# Reassign the fileobject.
old_fileobj = self._fileobj
self._fileobj = new_file
# We're no longer in memory.
self._in_memory = False
# Close the old file object.
old_fileobj.close()
def _get_disk_file(self):
"""This function is responsible for getting a file object on-disk for us.
"""
self.logger.info("Opening a file on disk")
file_dir = self._config.get('UPLOAD_DIR')
keep_filename = self._config.get('UPLOAD_KEEP_FILENAME', False)
keep_extensions = self._config.get('UPLOAD_KEEP_EXTENSIONS', False)
delete_tmp = self._config.get('UPLOAD_DELETE_TMP', True)
# If we have a directory and are to keep the filename...
if file_dir is not None and keep_filename:
self.logger.info("Saving with filename in: %r", file_dir)
# Build our filename.
# TODO: what happens if we don't have a filename?
fname = self._file_base
if keep_extensions:
fname = fname + self._ext
path = os.path.join(file_dir, fname)
try:
self.logger.info("Opening file: %r", path)
tmp_file = open(path, 'w+b')
except OSError as e:
tmp_file = None
self.logger.exception("Error opening temporary file")
raise FileError("Error opening temporary file: %r" % path)
else:
# Build options array.
# Note that on Python 3, tempfile doesn't support byte names. We
# encode our paths using the default filesystem encoding.
options = {}
if keep_extensions:
ext = self._ext
if isinstance(ext, bytes):
ext = ext.decode(sys.getfilesystemencoding())
options['suffix'] = ext
if file_dir is not None:
d = file_dir
if isinstance(d, bytes):
d = d.decode(sys.getfilesystemencoding())
options['dir'] = d
options['delete'] = delete_tmp
# Create a temporary (named) file with the appropriate settings.
self.logger.info("Creating a temporary file with options: %r",
options)
try:
tmp_file = tempfile.NamedTemporaryFile(**options)
except OSError:
self.logger.exception("Error creating named temporary file")
raise FileError("Error creating named temporary file")
fname = tmp_file.name
# Encode filename as bytes.
if isinstance(fname, str):
fname = fname.encode(sys.getfilesystemencoding())
self._actual_file_name = fname
return tmp_file
def write(self, data):
"""Write some data to the File.
:param data: a bytestring
"""
return self.on_data(data)
def on_data(self, data):
"""This method is a callback that will be called whenever data is
written to the File.
:param data: a bytestring
"""
pos = self._fileobj.tell()
bwritten = self._fileobj.write(data)
# true file objects write returns None
if bwritten is None:
bwritten = self._fileobj.tell() - pos
# If the bytes written isn't the same as the length, just return.
if bwritten != len(data):
self.logger.warning("bwritten != len(data) (%d != %d)", bwritten,
len(data))
return bwritten
# Keep track of how many bytes we've written.
self._bytes_written += bwritten
# If we're in-memory and are over our limit, we create a file.
if (self._in_memory and
self._config.get('MAX_MEMORY_FILE_SIZE') is not None and
(self._bytes_written >
self._config.get('MAX_MEMORY_FILE_SIZE'))):
self.logger.info("Flushing to disk")
self.flush_to_disk()
# Return the number of bytes written.
return bwritten
def on_end(self):
"""This method is called whenever the Field is finalized.
"""
# Flush the underlying file object
self._fileobj.flush()
def finalize(self):
"""Finalize the form file. This will not close the underlying file,
but simply signal that we are finished writing to the File.
"""
self.on_end()
def close(self):
"""Close the File object. This will actually close the underlying
file object (whether it's a :class:`io.BytesIO` or an actual file
object).
"""
self._fileobj.close()
def __repr__(self):
return "{}(file_name={!r}, field_name={!r})".format(
self.__class__.__name__,
self.file_name,
self.field_name
)
class BaseParser:
"""This class is the base class for all parsers. It contains the logic for
calling and adding callbacks.
A callback can be one of two different forms. "Notification callbacks" are
callbacks that are called when something happens - for example, when a new
part of a multipart message is encountered by the parser. "Data callbacks"
are called when we get some sort of data - for example, part of the body of
a multipart chunk. Notification callbacks are called with no parameters,
whereas data callbacks are called with three, as follows::
data_callback(data, start, end)
The "data" parameter is a bytestring (i.e. "foo" on Python 2, or b"foo" on
Python 3). "start" and "end" are integer indexes into the "data" string
that represent the data of interest. Thus, in a data callback, the slice
`data[start:end]` represents the data that the callback is "interested in".
The callback is not passed a copy of the data, since copying severely hurts
performance.
"""
def __init__(self):
self.logger = logging.getLogger(__name__)
def callback(self, name, data=None, start=None, end=None):
"""This function calls a provided callback with some data. If the
callback is not set, will do nothing.
:param name: The name of the callback to call (as a string).
:param data: Data to pass to the callback. If None, then it is
assumed that the callback is a notification callback,
and no parameters are given.
:param end: An integer that is passed to the data callback.
:param start: An integer that is passed to the data callback.
"""
name = "on_" + name
func = self.callbacks.get(name)
if func is None:
return
# Depending on whether we're given a buffer...
if data is not None:
# Don't do anything if we have start == end.
if start is not None and start == end:
return
self.logger.debug("Calling %s with data[%d:%d]", name, start, end)
func(data, start, end)
else:
self.logger.debug("Calling %s with no data", name)
func()
def set_callback(self, name, new_func):
"""Update the function for a callback. Removes from the callbacks dict
if new_func is None.
:param name: The name of the callback to call (as a string).
:param new_func: The new function for the callback. If None, then the
callback will be removed (with no error if it does not
exist).
"""
if new_func is None:
self.callbacks.pop('on_' + name, None)
else:
self.callbacks['on_' + name] = new_func
def close(self):
pass # pragma: no cover
def finalize(self):
pass # pragma: no cover
def __repr__(self):
return "%s()" % self.__class__.__name__
class OctetStreamParser(BaseParser):
"""This parser parses an octet-stream request body and calls callbacks when
incoming data is received. Callbacks are as follows:
.. list-table::
:widths: 15 10 30
:header-rows: 1
* - Callback Name
- Parameters
- Description
* - on_start
- None
- Called when the first data is parsed.
* - on_data
- data, start, end
- Called for each data chunk that is parsed.
* - on_end
- None
- Called when the parser is finished parsing all data.
:param callbacks: A dictionary of callbacks. See the documentation for
:class:`BaseParser`.
:param max_size: The maximum size of body to parse. Defaults to infinity -
i.e. unbounded.
"""
def __init__(self, callbacks={}, max_size=float('inf')):
super().__init__()
self.callbacks = callbacks
self._started = False
if not isinstance(max_size, Number) or max_size < 1:
raise ValueError("max_size must be a positive number, not %r" %
max_size)
self.max_size = max_size
self._current_size = 0
def write(self, data):
"""Write some data to the parser, which will perform size verification,
and then pass the data to the underlying callback.
:param data: a bytestring
"""
if not self._started:
self.callback('start')
self._started = True
# Truncate data length.
data_len = len(data)
if (self._current_size + data_len) > self.max_size:
# We truncate the length of data that we are to process.
new_size = int(self.max_size - self._current_size)
self.logger.warning("Current size is %d (max %d), so truncating "
"data length from %d to %d",
self._current_size, self.max_size, data_len,
new_size)
data_len = new_size
# Increment size, then callback, in case there's an exception.
self._current_size += data_len
self.callback('data', data, 0, data_len)
return data_len
def finalize(self):
"""Finalize this parser, which signals to that we are finished parsing,
and sends the on_end callback.
"""
self.callback('end')
def __repr__(self):
return "%s()" % self.__class__.__name__
class QuerystringParser(BaseParser):
"""This is a streaming querystring parser. It will consume data, and call
the callbacks given when it has data.
.. list-table::
:widths: 15 10 30
:header-rows: 1
* - Callback Name
- Parameters
- Description
* - on_field_start
- None
- Called when a new field is encountered.
* - on_field_name
- data, start, end
- Called when a portion of a field's name is encountered.
* - on_field_data
- data, start, end
- Called when a portion of a field's data is encountered.
* - on_field_end
- None
- Called when the end of a field is encountered.
* - on_end
- None
- Called when the parser is finished parsing all data.
:param callbacks: A dictionary of callbacks. See the documentation for
:class:`BaseParser`.
:param strict_parsing: Whether or not to parse the body strictly. Defaults
to False. If this is set to True, then the behavior
of the parser changes as the following: if a field
has a value with an equal sign (e.g. "foo=bar", or
"foo="), it is always included. If a field has no
equals sign (e.g. "...&name&..."), it will be
treated as an error if 'strict_parsing' is True,
otherwise included. If an error is encountered,
then a
:class:`multipart.exceptions.QuerystringParseError`
will be raised.
:param max_size: The maximum size of body to parse. Defaults to infinity -
i.e. unbounded.
"""
def __init__(self, callbacks={}, strict_parsing=False,
max_size=float('inf')):
super().__init__()
self.state = STATE_BEFORE_FIELD
self._found_sep = False
self.callbacks = callbacks
# Max-size stuff
if not isinstance(max_size, Number) or max_size < 1:
raise ValueError("max_size must be a positive number, not %r" %
max_size)
self.max_size = max_size
self._current_size = 0
# Should parsing be strict?
self.strict_parsing = strict_parsing
def write(self, data):
"""Write some data to the parser, which will perform size verification,
parse into either a field name or value, and then pass the
corresponding data to the underlying callback. If an error is
encountered while parsing, a QuerystringParseError will be raised. The
"offset" attribute of the raised exception will be set to the offset in
the input data chunk (NOT the overall stream) that caused the error.
:param data: a bytestring
"""
# Handle sizing.
data_len = len(data)
if (self._current_size + data_len) > self.max_size:
# We truncate the length of data that we are to process.
new_size = int(self.max_size - self._current_size)
self.logger.warning("Current size is %d (max %d), so truncating "
"data length from %d to %d",
self._current_size, self.max_size, data_len,
new_size)
data_len = new_size
l = 0
try:
l = self._internal_write(data, data_len)
finally:
self._current_size += l
return l
def _internal_write(self, data, length):
state = self.state
strict_parsing = self.strict_parsing
found_sep = self._found_sep
i = 0
while i < length:
ch = data[i]
# Depending on our state...
if state == STATE_BEFORE_FIELD:
# If the 'found_sep' flag is set, we've already encountered
# and skipped a single separator. If so, we check our strict
# parsing flag and decide what to do. Otherwise, we haven't
# yet reached a separator, and thus, if we do, we need to skip
# it as it will be the boundary between fields that's supposed
# to be there.
if ch == AMPERSAND or ch == SEMICOLON:
if found_sep:
# If we're parsing strictly, we disallow blank chunks.
if strict_parsing:
e = QuerystringParseError(
"Skipping duplicate ampersand/semicolon at "
"%d" % i
)
e.offset = i
raise e
else:
self.logger.debug("Skipping duplicate ampersand/"
"semicolon at %d", i)
else:
# This case is when we're skipping the (first)
# separator between fields, so we just set our flag
# and continue on.
found_sep = True
else:
# Emit a field-start event, and go to that state. Also,
# reset the "found_sep" flag, for the next time we get to
# this state.
self.callback('field_start')
i -= 1
state = STATE_FIELD_NAME
found_sep = False
elif state == STATE_FIELD_NAME:
# Try and find a separator - we ensure that, if we do, we only
# look for the equal sign before it.
sep_pos = data.find(b'&', i)
if sep_pos == -1:
sep_pos = data.find(b';', i)
# See if we can find an equals sign in the remaining data. If
# so, we can immediately emit the field name and jump to the
# data state.
if sep_pos != -1:
equals_pos = data.find(b'=', i, sep_pos)
else:
equals_pos = data.find(b'=', i)
if equals_pos != -1:
# Emit this name.
self.callback('field_name', data, i, equals_pos)
# Jump i to this position. Note that it will then have 1
# added to it below, which means the next iteration of this
# loop will inspect the character after the equals sign.
i = equals_pos
state = STATE_FIELD_DATA
else:
# No equals sign found.
if not strict_parsing:
# See also comments in the STATE_FIELD_DATA case below.
# If we found the separator, we emit the name and just
# end - there's no data callback at all (not even with
# a blank value).
if sep_pos != -1:
self.callback('field_name', data, i, sep_pos)
self.callback('field_end')
i = sep_pos - 1
state = STATE_BEFORE_FIELD
else:
# Otherwise, no separator in this block, so the
# rest of this chunk must be a name.
self.callback('field_name', data, i, length)
i = length
else:
# We're parsing strictly. If we find a separator,
# this is an error - we require an equals sign.
if sep_pos != -1:
e = QuerystringParseError(
"When strict_parsing is True, we require an "
"equals sign in all field chunks. Did not "
"find one in the chunk that starts at %d" %
(i,)
)
e.offset = i
raise e
# No separator in the rest of this chunk, so it's just
# a field name.
self.callback('field_name', data, i, length)
i = length
elif state == STATE_FIELD_DATA:
# Try finding either an ampersand or a semicolon after this
# position.
sep_pos = data.find(b'&', i)
if sep_pos == -1:
sep_pos = data.find(b';', i)
# If we found it, callback this bit as data and then go back
# to expecting to find a field.
if sep_pos != -1:
self.callback('field_data', data, i, sep_pos)
self.callback('field_end')
# Note that we go to the separator, which brings us to the
# "before field" state. This allows us to properly emit
# "field_start" events only when we actually have data for
# a field of some sort.
i = sep_pos - 1
state = STATE_BEFORE_FIELD
# Otherwise, emit the rest as data and finish.
else:
self.callback('field_data', data, i, length)
i = length
else: # pragma: no cover (error case)
msg = "Reached an unknown state %d at %d" % (state, i)
self.logger.warning(msg)
e = QuerystringParseError(msg)
e.offset = i
raise e
i += 1
self.state = state
self._found_sep = found_sep
return len(data)
def finalize(self):
"""Finalize this parser, which signals to that we are finished parsing,
if we're still in the middle of a field, an on_field_end callback, and
then the on_end callback.
"""
# If we're currently in the middle of a field, we finish it.
if self.state == STATE_FIELD_DATA:
self.callback('field_end')
self.callback('end')
def __repr__(self):
return "{}(strict_parsing={!r}, max_size={!r})".format(
self.__class__.__name__,
self.strict_parsing, self.max_size
)
class MultipartParser(BaseParser):
"""This class is a streaming multipart/form-data parser.
.. list-table::
:widths: 15 10 30
:header-rows: 1
* - Callback Name
- Parameters
- Description
* - on_part_begin
- None
- Called when a new part of the multipart message is encountered.
* - on_part_data
- data, start, end
- Called when a portion of a part's data is encountered.
* - on_part_end
- None
- Called when the end of a part is reached.
* - on_header_begin
- None
- Called when we've found a new header in a part of a multipart
message
* - on_header_field
- data, start, end
- Called each time an additional portion of a header is read (i.e. the
part of the header that is before the colon; the "Foo" in
"Foo: Bar").
* - on_header_value
- data, start, end
- Called when we get data for a header.
* - on_header_end
- None
- Called when the current header is finished - i.e. we've reached the
newline at the end of the header.
* - on_headers_finished
- None
- Called when all headers are finished, and before the part data
starts.
* - on_end
- None
- Called when the parser is finished parsing all data.
:param boundary: The multipart boundary. This is required, and must match
what is given in the HTTP request - usually in the
Content-Type header.
:param callbacks: A dictionary of callbacks. See the documentation for
:class:`BaseParser`.
:param max_size: The maximum size of body to parse. Defaults to infinity -
i.e. unbounded.
"""
def __init__(self, boundary, callbacks={}, max_size=float('inf')):
# Initialize parser state.
super().__init__()
self.state = STATE_START
self.index = self.flags = 0
self.callbacks = callbacks
if not isinstance(max_size, Number) or max_size < 1:
raise ValueError("max_size must be a positive number, not %r" %
max_size)
self.max_size = max_size
self._current_size = 0
# Setup marks. These are used to track the state of data received.
self.marks = {}
# TODO: Actually use this rather than the dumb version we currently use
# # Precompute the skip table for the Boyer-Moore-Horspool algorithm.
# skip = [len(boundary) for x in range(256)]
# for i in range(len(boundary) - 1):
# skip[ord_char(boundary[i])] = len(boundary) - i - 1
#
# # We use a tuple since it's a constant, and marginally faster.
# self.skip = tuple(skip)
# Save our boundary.
if isinstance(boundary, str): # pragma: no cover
boundary = boundary.encode('latin-1')
self.boundary = b'\r\n--' + boundary
# Get a set of characters that belong to our boundary.
self.boundary_chars = frozenset(self.boundary)
# We also create a lookbehind list.
# Note: the +8 is since we can have, at maximum, "\r\n--" + boundary +
# "--\r\n" at the final boundary, and the length of '\r\n--' and
# '--\r\n' is 8 bytes.
self.lookbehind = [NULL for x in range(len(boundary) + 8)]
def write(self, data):
"""Write some data to the parser, which will perform size verification,
and then parse the data into the appropriate location (e.g. header,
data, etc.), and pass this on to the underlying callback. If an error
is encountered, a MultipartParseError will be raised. The "offset"
attribute on the raised exception will be set to the offset of the byte
in the input chunk that caused the error.
:param data: a bytestring
"""
# Handle sizing.
data_len = len(data)
if (self._current_size + data_len) > self.max_size:
# We truncate the length of data that we are to process.
new_size = int(self.max_size - self._current_size)
self.logger.warning("Current size is %d (max %d), so truncating "
"data length from %d to %d",
self._current_size, self.max_size, data_len,
new_size)
data_len = new_size
l = 0
try:
l = self._internal_write(data, data_len)
finally:
self._current_size += l
return l
def _internal_write(self, data, length):
# Get values from locals.
boundary = self.boundary
# Get our state, flags and index. These are persisted between calls to
# this function.
state = self.state
index = self.index
flags = self.flags
# Our index defaults to 0.
i = 0
# Set a mark.
def set_mark(name):
self.marks[name] = i
# Remove a mark.
def delete_mark(name, reset=False):
self.marks.pop(name, None)
# Helper function that makes calling a callback with data easier. The
# 'remaining' parameter will callback from the marked value until the
# end of the buffer, and reset the mark, instead of deleting it. This
# is used at the end of the function to call our callbacks with any
# remaining data in this chunk.
def data_callback(name, remaining=False):
marked_index = self.marks.get(name)
if marked_index is None:
return
# If we're getting remaining data, we ignore the current i value
# and just call with the remaining data.
if remaining:
self.callback(name, data, marked_index, length)
self.marks[name] = 0
# Otherwise, we call it from the mark to the current byte we're
# processing.
else:
self.callback(name, data, marked_index, i)
self.marks.pop(name, None)
# For each byte...
while i < length:
c = data[i]
if state == STATE_START:
# Skip leading newlines
if c == CR or c == LF:
i += 1
self.logger.debug("Skipping leading CR/LF at %d", i)
continue
# index is used as in index into our boundary. Set to 0.
index = 0
# Move to the next state, but decrement i so that we re-process
# this character.
state = STATE_START_BOUNDARY
i -= 1
elif state == STATE_START_BOUNDARY:
# Check to ensure that the last 2 characters in our boundary
# are CRLF.
if index == len(boundary) - 2:
if c != CR:
# Error!
msg = "Did not find CR at end of boundary (%d)" % (i,)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
index += 1
elif index == len(boundary) - 2 + 1:
if c != LF:
msg = "Did not find LF at end of boundary (%d)" % (i,)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
# The index is now used for indexing into our boundary.
index = 0
# Callback for the start of a part.
self.callback('part_begin')
# Move to the next character and state.
state = STATE_HEADER_FIELD_START
else:
# Check to ensure our boundary matches
if c != boundary[index + 2]:
msg = "Did not find boundary character %r at index " \
"%d" % (c, index + 2)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
# Increment index into boundary and continue.
index += 1
elif state == STATE_HEADER_FIELD_START:
# Mark the start of a header field here, reset the index, and
# continue parsing our header field.
index = 0
# Set a mark of our header field.
set_mark('header_field')
# Move to parsing header fields.
state = STATE_HEADER_FIELD
i -= 1
elif state == STATE_HEADER_FIELD:
# If we've reached a CR at the beginning of a header, it means
# that we've reached the second of 2 newlines, and so there are
# no more headers to parse.
if c == CR:
delete_mark('header_field')
state = STATE_HEADERS_ALMOST_DONE
i += 1
continue
# Increment our index in the header.
index += 1
# Do nothing if we encounter a hyphen.
if c == HYPHEN:
pass
# If we've reached a colon, we're done with this header.
elif c == COLON:
# A 0-length header is an error.
if index == 1:
msg = "Found 0-length header at %d" % (i,)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
# Call our callback with the header field.
data_callback('header_field')
# Move to parsing the header value.
state = STATE_HEADER_VALUE_START
else:
# Lower-case this character, and ensure that it is in fact
# a valid letter. If not, it's an error.
cl = lower_char(c)
if cl < LOWER_A or cl > LOWER_Z:
msg = "Found non-alphanumeric character %r in " \
"header at %d" % (c, i)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
elif state == STATE_HEADER_VALUE_START:
# Skip leading spaces.
if c == SPACE:
i += 1
continue
# Mark the start of the header value.
set_mark('header_value')
# Move to the header-value state, reprocessing this character.
state = STATE_HEADER_VALUE
i -= 1
elif state == STATE_HEADER_VALUE:
# If we've got a CR, we're nearly done our headers. Otherwise,
# we do nothing and just move past this character.
if c == CR:
data_callback('header_value')
self.callback('header_end')
state = STATE_HEADER_VALUE_ALMOST_DONE
elif state == STATE_HEADER_VALUE_ALMOST_DONE:
# The last character should be a LF. If not, it's an error.
if c != LF:
msg = "Did not find LF character at end of header " \
"(found %r)" % (c,)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
# Move back to the start of another header. Note that if that
# state detects ANOTHER newline, it'll trigger the end of our
# headers.
state = STATE_HEADER_FIELD_START
elif state == STATE_HEADERS_ALMOST_DONE:
# We're almost done our headers. This is reached when we parse
# a CR at the beginning of a header, so our next character
# should be a LF, or it's an error.
if c != LF:
msg = f"Did not find LF at end of headers (found {c!r})"
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
self.callback('headers_finished')
state = STATE_PART_DATA_START
elif state == STATE_PART_DATA_START:
# Mark the start of our part data.
set_mark('part_data')
# Start processing part data, including this character.
state = STATE_PART_DATA
i -= 1
elif state == STATE_PART_DATA:
# We're processing our part data right now. During this, we
# need to efficiently search for our boundary, since any data
# on any number of lines can be a part of the current data.
# We use the Boyer-Moore-Horspool algorithm to efficiently
# search through the remainder of the buffer looking for our
# boundary.
# Save the current value of our index. We use this in case we
# find part of a boundary, but it doesn't match fully.
prev_index = index
# Set up variables.
boundary_length = len(boundary)
boundary_end = boundary_length - 1
data_length = length
boundary_chars = self.boundary_chars
# If our index is 0, we're starting a new part, so start our
# search.
if index == 0:
# Search forward until we either hit the end of our buffer,
# or reach a character that's in our boundary.
i += boundary_end
while i < data_length - 1 and data[i] not in boundary_chars:
i += boundary_length
# Reset i back the length of our boundary, which is the
# earliest possible location that could be our match (i.e.
# if we've just broken out of our loop since we saw the
# last character in our boundary)
i -= boundary_end
c = data[i]
# Now, we have a couple of cases here. If our index is before
# the end of the boundary...
if index < boundary_length:
# If the character matches...
if boundary[index] == c:
# If we found a match for our boundary, we send the
# existing data.
if index == 0:
data_callback('part_data')
# The current character matches, so continue!
index += 1
else:
index = 0
# Our index is equal to the length of our boundary!
elif index == boundary_length:
# First we increment it.
index += 1
# Now, if we've reached a newline, we need to set this as
# the potential end of our boundary.
if c == CR:
flags |= FLAG_PART_BOUNDARY
# Otherwise, if this is a hyphen, we might be at the last
# of all boundaries.
elif c == HYPHEN:
flags |= FLAG_LAST_BOUNDARY
# Otherwise, we reset our index, since this isn't either a
# newline or a hyphen.
else:
index = 0
# Our index is right after the part boundary, which should be
# a LF.
elif index == boundary_length + 1:
# If we're at a part boundary (i.e. we've seen a CR
# character already)...
if flags & FLAG_PART_BOUNDARY:
# We need a LF character next.
if c == LF:
# Unset the part boundary flag.
flags &= (~FLAG_PART_BOUNDARY)
# Callback indicating that we've reached the end of
# a part, and are starting a new one.
self.callback('part_end')
self.callback('part_begin')
# Move to parsing new headers.
index = 0
state = STATE_HEADER_FIELD_START
i += 1
continue
# We didn't find an LF character, so no match. Reset
# our index and clear our flag.
index = 0
flags &= (~FLAG_PART_BOUNDARY)
# Otherwise, if we're at the last boundary (i.e. we've
# seen a hyphen already)...
elif flags & FLAG_LAST_BOUNDARY:
# We need a second hyphen here.
if c == HYPHEN:
# Callback to end the current part, and then the
# message.
self.callback('part_end')
self.callback('end')
state = STATE_END
else:
# No match, so reset index.
index = 0
# If we have an index, we need to keep this byte for later, in
# case we can't match the full boundary.
if index > 0:
self.lookbehind[index - 1] = c
# Otherwise, our index is 0. If the previous index is not, it
# means we reset something, and we need to take the data we
# thought was part of our boundary and send it along as actual
# data.
elif prev_index > 0:
# Callback to write the saved data.
lb_data = join_bytes(self.lookbehind)
self.callback('part_data', lb_data, 0, prev_index)
# Overwrite our previous index.
prev_index = 0
# Re-set our mark for part data.
set_mark('part_data')
# Re-consider the current character, since this could be
# the start of the boundary itself.
i -= 1
elif state == STATE_END:
# Do nothing and just consume a byte in the end state.
if c not in (CR, LF):
self.logger.warning("Consuming a byte '0x%x' in the end state", c)
else: # pragma: no cover (error case)
# We got into a strange state somehow! Just stop processing.
msg = "Reached an unknown state %d at %d" % (state, i)
self.logger.warning(msg)
e = MultipartParseError(msg)
e.offset = i
raise e
# Move to the next byte.
i += 1
# We call our callbacks with any remaining data. Note that we pass
# the 'remaining' flag, which sets the mark back to 0 instead of
# deleting it, if it's found. This is because, if the mark is found
# at this point, we assume that there's data for one of these things
# that has been parsed, but not yet emitted. And, as such, it implies
# that we haven't yet reached the end of this 'thing'. So, by setting
# the mark to 0, we cause any data callbacks that take place in future
# calls to this function to start from the beginning of that buffer.
data_callback('header_field', True)
data_callback('header_value', True)
data_callback('part_data', True)
# Save values to locals.
self.state = state
self.index = index
self.flags = flags
# Return our data length to indicate no errors, and that we processed
# all of it.
return length
def finalize(self):
"""Finalize this parser, which signals to that we are finished parsing.
Note: It does not currently, but in the future, it will verify that we
are in the final state of the parser (i.e. the end of the multipart
message is well-formed), and, if not, throw an error.
"""
# TODO: verify that we're in the state STATE_END, otherwise throw an
# error or otherwise state that we're not finished parsing.
pass
def __repr__(self):
return f"{self.__class__.__name__}(boundary={self.boundary!r})"
class FormParser:
"""This class is the all-in-one form parser. Given all the information
necessary to parse a form, it will instantiate the correct parser, create
the proper :class:`Field` and :class:`File` classes to store the data that
is parsed, and call the two given callbacks with each field and file as
they become available.
:param content_type: The Content-Type of the incoming request. This is
used to select the appropriate parser.
:param on_field: The callback to call when a field has been parsed and is
ready for usage. See above for parameters.
:param on_file: The callback to call when a file has been parsed and is
ready for usage. See above for parameters.
:param on_end: An optional callback to call when all fields and files in a
request has been parsed. Can be None.
:param boundary: If the request is a multipart/form-data request, this
should be the boundary of the request, as given in the
Content-Type header, as a bytestring.
:param file_name: If the request is of type application/octet-stream, then
the body of the request will not contain any information
about the uploaded file. In such cases, you can provide
the file name of the uploaded file manually.
:param FileClass: The class to use for uploaded files. Defaults to
:class:`File`, but you can provide your own class if you
wish to customize behaviour. The class will be
instantiated as FileClass(file_name, field_name), and it
must provide the following functions::
file_instance.write(data)
file_instance.finalize()
file_instance.close()
:param FieldClass: The class to use for uploaded fields. Defaults to
:class:`Field`, but you can provide your own class if
you wish to customize behaviour. The class will be
instantiated as FieldClass(field_name), and it must
provide the following functions::
field_instance.write(data)
field_instance.finalize()
field_instance.close()
:param config: Configuration to use for this FormParser. The default
values are taken from the DEFAULT_CONFIG value, and then
any keys present in this dictionary will overwrite the
default values.
"""
#: This is the default configuration for our form parser.
#: Note: all file sizes should be in bytes.
DEFAULT_CONFIG = {
'MAX_BODY_SIZE': float('inf'),
'MAX_MEMORY_FILE_SIZE': 1 * 1024 * 1024,
'UPLOAD_DIR': None,
'UPLOAD_KEEP_FILENAME': False,
'UPLOAD_KEEP_EXTENSIONS': False,
# Error on invalid Content-Transfer-Encoding?
'UPLOAD_ERROR_ON_BAD_CTE': False,
}
def __init__(self, content_type, on_field, on_file, on_end=None,
boundary=None, file_name=None, FileClass=File,
FieldClass=Field, config={}):
self.logger = logging.getLogger(__name__)
# Save variables.
self.content_type = content_type
self.boundary = boundary
self.bytes_received = 0
self.parser = None
# Save callbacks.
self.on_field = on_field
self.on_file = on_file
self.on_end = on_end
# Save classes.
self.FileClass = File
self.FieldClass = Field
# Set configuration options.
self.config = self.DEFAULT_CONFIG.copy()
self.config.update(config)
# Depending on the Content-Type, we instantiate the correct parser.
if content_type == 'application/octet-stream':
# Work around the lack of 'nonlocal' in Py2
class vars:
f = None
def on_start():
vars.f = FileClass(file_name, None, config=self.config)
def on_data(data, start, end):
vars.f.write(data[start:end])
def on_end():
# Finalize the file itself.
vars.f.finalize()
# Call our callback.
on_file(vars.f)
# Call the on-end callback.
if self.on_end is not None:
self.on_end()
callbacks = {
'on_start': on_start,
'on_data': on_data,
'on_end': on_end,
}
# Instantiate an octet-stream parser
parser = OctetStreamParser(callbacks,
max_size=self.config['MAX_BODY_SIZE'])
elif (content_type == 'application/x-www-form-urlencoded' or
content_type == 'application/x-url-encoded'):
name_buffer = []
class vars:
f = None
def on_field_start():
pass
def on_field_name(data, start, end):
name_buffer.append(data[start:end])
def on_field_data(data, start, end):
if vars.f is None:
vars.f = FieldClass(b''.join(name_buffer))
del name_buffer[:]
vars.f.write(data[start:end])
def on_field_end():
# Finalize and call callback.
if vars.f is None:
# If we get here, it's because there was no field data.
# We create a field, set it to None, and then continue.
vars.f = FieldClass(b''.join(name_buffer))
del name_buffer[:]
vars.f.set_none()
vars.f.finalize()
on_field(vars.f)
vars.f = None
def on_end():
if self.on_end is not None:
self.on_end()
# Setup callbacks.
callbacks = {
'on_field_start': on_field_start,
'on_field_name': on_field_name,
'on_field_data': on_field_data,
'on_field_end': on_field_end,
'on_end': on_end,
}
# Instantiate parser.
parser = QuerystringParser(
callbacks=callbacks,
max_size=self.config['MAX_BODY_SIZE']
)
elif content_type == 'multipart/form-data':
if boundary is None:
self.logger.error("No boundary given")
raise FormParserError("No boundary given")
header_name = []
header_value = []
headers = {}
# No 'nonlocal' on Python 2 :-(
class vars:
f = None
writer = None
is_file = False
def on_part_begin():
pass
def on_part_data(data, start, end):
bytes_processed = vars.writer.write(data[start:end])
# TODO: check for error here.
return bytes_processed
def on_part_end():
vars.f.finalize()
if vars.is_file:
on_file(vars.f)
else:
on_field(vars.f)
def on_header_field(data, start, end):
header_name.append(data[start:end])
def on_header_value(data, start, end):
header_value.append(data[start:end])
def on_header_end():
headers[b''.join(header_name)] = b''.join(header_value)
del header_name[:]
del header_value[:]
def on_headers_finished():
# Reset the 'is file' flag.
vars.is_file = False
# Parse the content-disposition header.
# TODO: handle mixed case
content_disp = headers.get(b'Content-Disposition')
disp, options = parse_options_header(content_disp)
# Get the field and filename.
field_name = options.get(b'name')
file_name = options.get(b'filename')
# TODO: check for errors
# Create the proper class.
if file_name is None:
vars.f = FieldClass(field_name)
else:
vars.f = FileClass(file_name, field_name, config=self.config)
vars.is_file = True
# Parse the given Content-Transfer-Encoding to determine what
# we need to do with the incoming data.
# TODO: check that we properly handle 8bit / 7bit encoding.
transfer_encoding = headers.get(b'Content-Transfer-Encoding',
b'7bit')
if (transfer_encoding == b'binary' or
transfer_encoding == b'8bit' or
transfer_encoding == b'7bit'):
vars.writer = vars.f
elif transfer_encoding == b'base64':
vars.writer = Base64Decoder(vars.f)
elif transfer_encoding == b'quoted-printable':
vars.writer = QuotedPrintableDecoder(vars.f)
else:
self.logger.warning("Unknown Content-Transfer-Encoding: "
"%r", transfer_encoding)
if self.config['UPLOAD_ERROR_ON_BAD_CTE']:
raise FormParserError(
'Unknown Content-Transfer-Encoding "{}"'.format(
transfer_encoding
)
)
else:
# If we aren't erroring, then we just treat this as an
# unencoded Content-Transfer-Encoding.
vars.writer = vars.f
def on_end():
vars.writer.finalize()
if self.on_end is not None:
self.on_end()
# These are our callbacks for the parser.
callbacks = {
'on_part_begin': on_part_begin,
'on_part_data': on_part_data,
'on_part_end': on_part_end,
'on_header_field': on_header_field,
'on_header_value': on_header_value,
'on_header_end': on_header_end,
'on_headers_finished': on_headers_finished,
'on_end': on_end,
}
# Instantiate a multipart parser.
parser = MultipartParser(boundary, callbacks,
max_size=self.config['MAX_BODY_SIZE'])
else:
self.logger.warning("Unknown Content-Type: %r", content_type)
raise FormParserError("Unknown Content-Type: {}".format(
content_type
))
self.parser = parser
def write(self, data):
"""Write some data. The parser will forward this to the appropriate
underlying parser.
:param data: a bytestring
"""
self.bytes_received += len(data)
# TODO: check the parser's return value for errors?
return self.parser.write(data)
def finalize(self):
"""Finalize the parser."""
if self.parser is not None and hasattr(self.parser, 'finalize'):
self.parser.finalize()
def close(self):
"""Close the parser."""
if self.parser is not None and hasattr(self.parser, 'close'):
self.parser.close()
def __repr__(self):
return "{}(content_type={!r}, parser={!r})".format(
self.__class__.__name__,
self.content_type,
self.parser,
)
def create_form_parser(headers, on_field, on_file, trust_x_headers=False,
config={}):
"""This function is a helper function to aid in creating a FormParser
instances. Given a dictionary-like headers object, it will determine
the correct information needed, instantiate a FormParser with the
appropriate values and given callbacks, and then return the corresponding
parser.
:param headers: A dictionary-like object of HTTP headers. The only
required header is Content-Type.
:param on_field: Callback to call with each parsed field.
:param on_file: Callback to call with each parsed file.
:param trust_x_headers: Whether or not to trust information received from
certain X-Headers - for example, the file name from
X-File-Name.
:param config: Configuration variables to pass to the FormParser.
"""
content_type = headers.get('Content-Type')
if content_type is None:
logging.getLogger(__name__).warning("No Content-Type header given")
raise ValueError("No Content-Type header given!")
# Boundaries are optional (the FormParser will raise if one is needed
# but not given).
content_type, params = parse_options_header(content_type)
boundary = params.get(b'boundary')
# We need content_type to be a string, not a bytes object.
content_type = content_type.decode('latin-1')
# File names are optional.
file_name = headers.get('X-File-Name')
# Instantiate a form parser.
form_parser = FormParser(content_type,
on_field,
on_file,
boundary=boundary,
file_name=file_name,
config=config)
# Return our parser.
return form_parser
def parse_form(headers, input_stream, on_field, on_file, chunk_size=1048576,
**kwargs):
"""This function is useful if you just want to parse a request body,
without too much work. Pass it a dictionary-like object of the request's
headers, and a file-like object for the input stream, along with two
callbacks that will get called whenever a field or file is parsed.
:param headers: A dictionary-like object of HTTP headers. The only
required header is Content-Type.
:param input_stream: A file-like object that represents the request body.
The read() method must return bytestrings.
:param on_field: Callback to call with each parsed field.
:param on_file: Callback to call with each parsed file.
:param chunk_size: The maximum size to read from the input stream and write
to the parser at one time. Defaults to 1 MiB.
"""
# Create our form parser.
parser = create_form_parser(headers, on_field, on_file)
# Read chunks of 100KiB and write to the parser, but never read more than
# the given Content-Length, if any.
content_length = headers.get('Content-Length')
if content_length is not None:
content_length = int(content_length)
else:
content_length = float('inf')
bytes_read = 0
while True:
# Read only up to the Content-Length given.
max_readable = min(content_length - bytes_read, 1048576)
buff = input_stream.read(max_readable)
# Write to the parser and update our length.
parser.write(buff)
bytes_read += len(buff)
# If we get a buffer that's smaller than the size requested, or if we
# have read up to our content length, we're done.
if len(buff) != max_readable or bytes_read == content_length:
break
# Tell our parser that we're done writing data.
parser.finalize()
| 71,230 | Python | 36.608765 | 109 | 0.524821 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/multipart/decoders.py | import base64
import binascii
from .exceptions import DecodeError
class Base64Decoder:
"""This object provides an interface to decode a stream of Base64 data. It
is instantiated with an "underlying object", and whenever a write()
operation is performed, it will decode the incoming data as Base64, and
call write() on the underlying object. This is primarily used for decoding
form data encoded as Base64, but can be used for other purposes::
from multipart.decoders import Base64Decoder
fd = open("notb64.txt", "wb")
decoder = Base64Decoder(fd)
try:
decoder.write("Zm9vYmFy") # "foobar" in Base64
decoder.finalize()
finally:
decoder.close()
# The contents of "notb64.txt" should be "foobar".
This object will also pass all finalize() and close() calls to the
underlying object, if the underlying object supports them.
Note that this class maintains a cache of base64 chunks, so that a write of
arbitrary size can be performed. You must call :meth:`finalize` on this
object after all writes are completed to ensure that all data is flushed
to the underlying object.
:param underlying: the underlying object to pass writes to
"""
def __init__(self, underlying):
self.cache = bytearray()
self.underlying = underlying
def write(self, data):
"""Takes any input data provided, decodes it as base64, and passes it
on to the underlying object. If the data provided is invalid base64
data, then this method will raise
a :class:`multipart.exceptions.DecodeError`
:param data: base64 data to decode
"""
# Prepend any cache info to our data.
if len(self.cache) > 0:
data = self.cache + data
# Slice off a string that's a multiple of 4.
decode_len = (len(data) // 4) * 4
val = data[:decode_len]
# Decode and write, if we have any.
if len(val) > 0:
try:
decoded = base64.b64decode(val)
except binascii.Error:
raise DecodeError('There was an error raised while decoding '
'base64-encoded data.')
self.underlying.write(decoded)
# Get the remaining bytes and save in our cache.
remaining_len = len(data) % 4
if remaining_len > 0:
self.cache = data[-remaining_len:]
else:
self.cache = b''
# Return the length of the data to indicate no error.
return len(data)
def close(self):
"""Close this decoder. If the underlying object has a `close()`
method, this function will call it.
"""
if hasattr(self.underlying, 'close'):
self.underlying.close()
def finalize(self):
"""Finalize this object. This should be called when no more data
should be written to the stream. This function can raise a
:class:`multipart.exceptions.DecodeError` if there is some remaining
data in the cache.
If the underlying object has a `finalize()` method, this function will
call it.
"""
if len(self.cache) > 0:
raise DecodeError('There are %d bytes remaining in the '
'Base64Decoder cache when finalize() is called'
% len(self.cache))
if hasattr(self.underlying, 'finalize'):
self.underlying.finalize()
def __repr__(self):
return f"{self.__class__.__name__}(underlying={self.underlying!r})"
class QuotedPrintableDecoder:
"""This object provides an interface to decode a stream of quoted-printable
data. It is instantiated with an "underlying object", in the same manner
as the :class:`multipart.decoders.Base64Decoder` class. This class behaves
in exactly the same way, including maintaining a cache of quoted-printable
chunks.
:param underlying: the underlying object to pass writes to
"""
def __init__(self, underlying):
self.cache = b''
self.underlying = underlying
def write(self, data):
"""Takes any input data provided, decodes it as quoted-printable, and
passes it on to the underlying object.
:param data: quoted-printable data to decode
"""
# Prepend any cache info to our data.
if len(self.cache) > 0:
data = self.cache + data
# If the last 2 characters have an '=' sign in it, then we won't be
# able to decode the encoded value and we'll need to save it for the
# next decoding step.
if data[-2:].find(b'=') != -1:
enc, rest = data[:-2], data[-2:]
else:
enc = data
rest = b''
# Encode and write, if we have data.
if len(enc) > 0:
self.underlying.write(binascii.a2b_qp(enc))
# Save remaining in cache.
self.cache = rest
return len(data)
def close(self):
"""Close this decoder. If the underlying object has a `close()`
method, this function will call it.
"""
if hasattr(self.underlying, 'close'):
self.underlying.close()
def finalize(self):
"""Finalize this object. This should be called when no more data
should be written to the stream. This function will not raise any
exceptions, but it may write more data to the underlying object if
there is data remaining in the cache.
If the underlying object has a `finalize()` method, this function will
call it.
"""
# If we have a cache, write and then remove it.
if len(self.cache) > 0:
self.underlying.write(binascii.a2b_qp(self.cache))
self.cache = b''
# Finalize our underlying stream.
if hasattr(self.underlying, 'finalize'):
self.underlying.finalize()
def __repr__(self):
return f"{self.__class__.__name__}(underlying={self.underlying!r})"
| 6,107 | Python | 34.511628 | 79 | 0.606681 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/multipart/__init__.py | # This is the canonical package information.
__author__ = 'Andrew Dunham'
__license__ = 'Apache'
__copyright__ = "Copyright (c) 2012-2013, Andrew Dunham"
__version__ = "0.0.6"
from .multipart import (
FormParser,
MultipartParser,
QuerystringParser,
OctetStreamParser,
create_form_parser,
parse_form,
)
| 335 | Python | 19.999999 | 56 | 0.653731 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/multipart/tests/test_multipart.py | import os
import sys
import glob
import yaml
import base64
import random
import tempfile
import unittest
from .compat import (
parametrize,
parametrize_class,
slow_test,
)
from io import BytesIO
from unittest.mock import MagicMock, Mock, patch
from ..multipart import *
# Get the current directory for our later test cases.
curr_dir = os.path.abspath(os.path.dirname(__file__))
def force_bytes(val):
if isinstance(val, str):
val = val.encode(sys.getfilesystemencoding())
return val
class TestField(unittest.TestCase):
def setUp(self):
self.f = Field('foo')
def test_name(self):
self.assertEqual(self.f.field_name, 'foo')
def test_data(self):
self.f.write(b'test123')
self.assertEqual(self.f.value, b'test123')
def test_cache_expiration(self):
self.f.write(b'test')
self.assertEqual(self.f.value, b'test')
self.f.write(b'123')
self.assertEqual(self.f.value, b'test123')
def test_finalize(self):
self.f.write(b'test123')
self.f.finalize()
self.assertEqual(self.f.value, b'test123')
def test_close(self):
self.f.write(b'test123')
self.f.close()
self.assertEqual(self.f.value, b'test123')
def test_from_value(self):
f = Field.from_value(b'name', b'value')
self.assertEqual(f.field_name, b'name')
self.assertEqual(f.value, b'value')
f2 = Field.from_value(b'name', None)
self.assertEqual(f2.value, None)
def test_equality(self):
f1 = Field.from_value(b'name', b'value')
f2 = Field.from_value(b'name', b'value')
self.assertEqual(f1, f2)
def test_equality_with_other(self):
f = Field.from_value(b'foo', b'bar')
self.assertFalse(f == b'foo')
self.assertFalse(b'foo' == f)
def test_set_none(self):
f = Field(b'foo')
self.assertEqual(f.value, b'')
f.set_none()
self.assertEqual(f.value, None)
class TestFile(unittest.TestCase):
def setUp(self):
self.c = {}
self.d = force_bytes(tempfile.mkdtemp())
self.f = File(b'foo.txt', config=self.c)
def assert_data(self, data):
f = self.f.file_object
f.seek(0)
self.assertEqual(f.read(), data)
f.seek(0)
f.truncate()
def assert_exists(self):
full_path = os.path.join(self.d, self.f.actual_file_name)
self.assertTrue(os.path.exists(full_path))
def test_simple(self):
self.f.write(b'foobar')
self.assert_data(b'foobar')
def test_invalid_write(self):
m = Mock()
m.write.return_value = 5
self.f._fileobj = m
v = self.f.write(b'foobar')
self.assertEqual(v, 5)
def test_file_fallback(self):
self.c['MAX_MEMORY_FILE_SIZE'] = 1
self.f.write(b'1')
self.assertTrue(self.f.in_memory)
self.assert_data(b'1')
self.f.write(b'123')
self.assertFalse(self.f.in_memory)
self.assert_data(b'123')
# Test flushing too.
old_obj = self.f.file_object
self.f.flush_to_disk()
self.assertFalse(self.f.in_memory)
self.assertIs(self.f.file_object, old_obj)
def test_file_fallback_with_data(self):
self.c['MAX_MEMORY_FILE_SIZE'] = 10
self.f.write(b'1' * 10)
self.assertTrue(self.f.in_memory)
self.f.write(b'2' * 10)
self.assertFalse(self.f.in_memory)
self.assert_data(b'11111111112222222222')
def test_file_name(self):
# Write to this dir.
self.c['UPLOAD_DIR'] = self.d
self.c['MAX_MEMORY_FILE_SIZE'] = 10
# Write.
self.f.write(b'12345678901')
self.assertFalse(self.f.in_memory)
# Assert that the file exists
self.assertIsNotNone(self.f.actual_file_name)
self.assert_exists()
def test_file_full_name(self):
# Write to this dir.
self.c['UPLOAD_DIR'] = self.d
self.c['UPLOAD_KEEP_FILENAME'] = True
self.c['MAX_MEMORY_FILE_SIZE'] = 10
# Write.
self.f.write(b'12345678901')
self.assertFalse(self.f.in_memory)
# Assert that the file exists
self.assertEqual(self.f.actual_file_name, b'foo')
self.assert_exists()
def test_file_full_name_with_ext(self):
self.c['UPLOAD_DIR'] = self.d
self.c['UPLOAD_KEEP_FILENAME'] = True
self.c['UPLOAD_KEEP_EXTENSIONS'] = True
self.c['MAX_MEMORY_FILE_SIZE'] = 10
# Write.
self.f.write(b'12345678901')
self.assertFalse(self.f.in_memory)
# Assert that the file exists
self.assertEqual(self.f.actual_file_name, b'foo.txt')
self.assert_exists()
def test_file_full_name_with_ext(self):
self.c['UPLOAD_DIR'] = self.d
self.c['UPLOAD_KEEP_FILENAME'] = True
self.c['UPLOAD_KEEP_EXTENSIONS'] = True
self.c['MAX_MEMORY_FILE_SIZE'] = 10
# Write.
self.f.write(b'12345678901')
self.assertFalse(self.f.in_memory)
# Assert that the file exists
self.assertEqual(self.f.actual_file_name, b'foo.txt')
self.assert_exists()
def test_no_dir_with_extension(self):
self.c['UPLOAD_KEEP_EXTENSIONS'] = True
self.c['MAX_MEMORY_FILE_SIZE'] = 10
# Write.
self.f.write(b'12345678901')
self.assertFalse(self.f.in_memory)
# Assert that the file exists
ext = os.path.splitext(self.f.actual_file_name)[1]
self.assertEqual(ext, b'.txt')
self.assert_exists()
def test_invalid_dir_with_name(self):
# Write to this dir.
self.c['UPLOAD_DIR'] = force_bytes(os.path.join('/', 'tmp', 'notexisting'))
self.c['UPLOAD_KEEP_FILENAME'] = True
self.c['MAX_MEMORY_FILE_SIZE'] = 5
# Write.
with self.assertRaises(FileError):
self.f.write(b'1234567890')
def test_invalid_dir_no_name(self):
# Write to this dir.
self.c['UPLOAD_DIR'] = force_bytes(os.path.join('/', 'tmp', 'notexisting'))
self.c['UPLOAD_KEEP_FILENAME'] = False
self.c['MAX_MEMORY_FILE_SIZE'] = 5
# Write.
with self.assertRaises(FileError):
self.f.write(b'1234567890')
# TODO: test uploading two files with the same name.
class TestParseOptionsHeader(unittest.TestCase):
def test_simple(self):
t, p = parse_options_header('application/json')
self.assertEqual(t, b'application/json')
self.assertEqual(p, {})
def test_blank(self):
t, p = parse_options_header('')
self.assertEqual(t, b'')
self.assertEqual(p, {})
def test_single_param(self):
t, p = parse_options_header('application/json;par=val')
self.assertEqual(t, b'application/json')
self.assertEqual(p, {b'par': b'val'})
def test_single_param_with_spaces(self):
t, p = parse_options_header(b'application/json; par=val')
self.assertEqual(t, b'application/json')
self.assertEqual(p, {b'par': b'val'})
def test_multiple_params(self):
t, p = parse_options_header(b'application/json;par=val;asdf=foo')
self.assertEqual(t, b'application/json')
self.assertEqual(p, {b'par': b'val', b'asdf': b'foo'})
def test_quoted_param(self):
t, p = parse_options_header(b'application/json;param="quoted"')
self.assertEqual(t, b'application/json')
self.assertEqual(p, {b'param': b'quoted'})
def test_quoted_param_with_semicolon(self):
t, p = parse_options_header(b'application/json;param="quoted;with;semicolons"')
self.assertEqual(p[b'param'], b'quoted;with;semicolons')
def test_quoted_param_with_escapes(self):
t, p = parse_options_header(b'application/json;param="This \\" is \\" a \\" quote"')
self.assertEqual(p[b'param'], b'This " is " a " quote')
def test_handles_ie6_bug(self):
t, p = parse_options_header(b'text/plain; filename="C:\\this\\is\\a\\path\\file.txt"')
self.assertEqual(p[b'filename'], b'file.txt')
class TestBaseParser(unittest.TestCase):
def setUp(self):
self.b = BaseParser()
self.b.callbacks = {}
def test_callbacks(self):
# The stupid list-ness is to get around lack of nonlocal on py2
l = [0]
def on_foo():
l[0] += 1
self.b.set_callback('foo', on_foo)
self.b.callback('foo')
self.assertEqual(l[0], 1)
self.b.set_callback('foo', None)
self.b.callback('foo')
self.assertEqual(l[0], 1)
class TestQuerystringParser(unittest.TestCase):
def assert_fields(self, *args, **kwargs):
if kwargs.pop('finalize', True):
self.p.finalize()
self.assertEqual(self.f, list(args))
if kwargs.get('reset', True):
self.f = []
def setUp(self):
self.reset()
def reset(self):
self.f = []
name_buffer = []
data_buffer = []
def on_field_name(data, start, end):
name_buffer.append(data[start:end])
def on_field_data(data, start, end):
data_buffer.append(data[start:end])
def on_field_end():
self.f.append((
b''.join(name_buffer),
b''.join(data_buffer)
))
del name_buffer[:]
del data_buffer[:]
callbacks = {
'on_field_name': on_field_name,
'on_field_data': on_field_data,
'on_field_end': on_field_end
}
self.p = QuerystringParser(callbacks)
def test_simple_querystring(self):
self.p.write(b'foo=bar')
self.assert_fields((b'foo', b'bar'))
def test_querystring_blank_beginning(self):
self.p.write(b'&foo=bar')
self.assert_fields((b'foo', b'bar'))
def test_querystring_blank_end(self):
self.p.write(b'foo=bar&')
self.assert_fields((b'foo', b'bar'))
def test_multiple_querystring(self):
self.p.write(b'foo=bar&asdf=baz')
self.assert_fields(
(b'foo', b'bar'),
(b'asdf', b'baz')
)
def test_streaming_simple(self):
self.p.write(b'foo=bar&')
self.assert_fields(
(b'foo', b'bar'),
finalize=False
)
self.p.write(b'asdf=baz')
self.assert_fields(
(b'asdf', b'baz')
)
def test_streaming_break(self):
self.p.write(b'foo=one')
self.assert_fields(finalize=False)
self.p.write(b'two')
self.assert_fields(finalize=False)
self.p.write(b'three')
self.assert_fields(finalize=False)
self.p.write(b'&asd')
self.assert_fields(
(b'foo', b'onetwothree'),
finalize=False
)
self.p.write(b'f=baz')
self.assert_fields(
(b'asdf', b'baz')
)
def test_semicolon_separator(self):
self.p.write(b'foo=bar;asdf=baz')
self.assert_fields(
(b'foo', b'bar'),
(b'asdf', b'baz')
)
def test_too_large_field(self):
self.p.max_size = 15
# Note: len = 8
self.p.write(b"foo=bar&")
self.assert_fields((b'foo', b'bar'), finalize=False)
# Note: len = 8, only 7 bytes processed
self.p.write(b'a=123456')
self.assert_fields((b'a', b'12345'))
def test_invalid_max_size(self):
with self.assertRaises(ValueError):
p = QuerystringParser(max_size=-100)
def test_strict_parsing_pass(self):
data = b'foo=bar&another=asdf'
for first, last in split_all(data):
self.reset()
self.p.strict_parsing = True
print(f"{first!r} / {last!r}")
self.p.write(first)
self.p.write(last)
self.assert_fields((b'foo', b'bar'), (b'another', b'asdf'))
def test_strict_parsing_fail_double_sep(self):
data = b'foo=bar&&another=asdf'
for first, last in split_all(data):
self.reset()
self.p.strict_parsing = True
cnt = 0
with self.assertRaises(QuerystringParseError) as cm:
cnt += self.p.write(first)
cnt += self.p.write(last)
self.p.finalize()
# The offset should occur at 8 bytes into the data (as a whole),
# so we calculate the offset into the chunk.
if cm is not None:
self.assertEqual(cm.exception.offset, 8 - cnt)
def test_double_sep(self):
data = b'foo=bar&&another=asdf'
for first, last in split_all(data):
print(f" {first!r} / {last!r} ")
self.reset()
cnt = 0
cnt += self.p.write(first)
cnt += self.p.write(last)
self.assert_fields((b'foo', b'bar'), (b'another', b'asdf'))
def test_strict_parsing_fail_no_value(self):
self.p.strict_parsing = True
with self.assertRaises(QuerystringParseError) as cm:
self.p.write(b'foo=bar&blank&another=asdf')
if cm is not None:
self.assertEqual(cm.exception.offset, 8)
def test_success_no_value(self):
self.p.write(b'foo=bar&blank&another=asdf')
self.assert_fields(
(b'foo', b'bar'),
(b'blank', b''),
(b'another', b'asdf')
)
def test_repr(self):
# Issue #29; verify we don't assert on repr()
_ignored = repr(self.p)
class TestOctetStreamParser(unittest.TestCase):
def setUp(self):
self.d = []
self.started = 0
self.finished = 0
def on_start():
self.started += 1
def on_data(data, start, end):
self.d.append(data[start:end])
def on_end():
self.finished += 1
callbacks = {
'on_start': on_start,
'on_data': on_data,
'on_end': on_end
}
self.p = OctetStreamParser(callbacks)
def assert_data(self, data, finalize=True):
self.assertEqual(b''.join(self.d), data)
self.d = []
def assert_started(self, val=True):
if val:
self.assertEqual(self.started, 1)
else:
self.assertEqual(self.started, 0)
def assert_finished(self, val=True):
if val:
self.assertEqual(self.finished, 1)
else:
self.assertEqual(self.finished, 0)
def test_simple(self):
# Assert is not started
self.assert_started(False)
# Write something, it should then be started + have data
self.p.write(b'foobar')
self.assert_started()
self.assert_data(b'foobar')
# Finalize, and check
self.assert_finished(False)
self.p.finalize()
self.assert_finished()
def test_multiple_chunks(self):
self.p.write(b'foo')
self.p.write(b'bar')
self.p.write(b'baz')
self.p.finalize()
self.assert_data(b'foobarbaz')
self.assert_finished()
def test_max_size(self):
self.p.max_size = 5
self.p.write(b'0123456789')
self.p.finalize()
self.assert_data(b'01234')
self.assert_finished()
def test_invalid_max_size(self):
with self.assertRaises(ValueError):
q = OctetStreamParser(max_size='foo')
class TestBase64Decoder(unittest.TestCase):
# Note: base64('foobar') == 'Zm9vYmFy'
def setUp(self):
self.f = BytesIO()
self.d = Base64Decoder(self.f)
def assert_data(self, data, finalize=True):
if finalize:
self.d.finalize()
self.f.seek(0)
self.assertEqual(self.f.read(), data)
self.f.seek(0)
self.f.truncate()
def test_simple(self):
self.d.write(b'Zm9vYmFy')
self.assert_data(b'foobar')
def test_bad(self):
with self.assertRaises(DecodeError):
self.d.write(b'Zm9v!mFy')
def test_split_properly(self):
self.d.write(b'Zm9v')
self.d.write(b'YmFy')
self.assert_data(b'foobar')
def test_bad_split(self):
buff = b'Zm9v'
for i in range(1, 4):
first, second = buff[:i], buff[i:]
self.setUp()
self.d.write(first)
self.d.write(second)
self.assert_data(b'foo')
def test_long_bad_split(self):
buff = b'Zm9vYmFy'
for i in range(5, 8):
first, second = buff[:i], buff[i:]
self.setUp()
self.d.write(first)
self.d.write(second)
self.assert_data(b'foobar')
def test_close_and_finalize(self):
parser = Mock()
f = Base64Decoder(parser)
f.finalize()
parser.finalize.assert_called_once_with()
f.close()
parser.close.assert_called_once_with()
def test_bad_length(self):
self.d.write(b'Zm9vYmF') # missing ending 'y'
with self.assertRaises(DecodeError):
self.d.finalize()
class TestQuotedPrintableDecoder(unittest.TestCase):
def setUp(self):
self.f = BytesIO()
self.d = QuotedPrintableDecoder(self.f)
def assert_data(self, data, finalize=True):
if finalize:
self.d.finalize()
self.f.seek(0)
self.assertEqual(self.f.read(), data)
self.f.seek(0)
self.f.truncate()
def test_simple(self):
self.d.write(b'foobar')
self.assert_data(b'foobar')
def test_with_escape(self):
self.d.write(b'foo=3Dbar')
self.assert_data(b'foo=bar')
def test_with_newline_escape(self):
self.d.write(b'foo=\r\nbar')
self.assert_data(b'foobar')
def test_with_only_newline_escape(self):
self.d.write(b'foo=\nbar')
self.assert_data(b'foobar')
def test_with_split_escape(self):
self.d.write(b'foo=3')
self.d.write(b'Dbar')
self.assert_data(b'foo=bar')
def test_with_split_newline_escape_1(self):
self.d.write(b'foo=\r')
self.d.write(b'\nbar')
self.assert_data(b'foobar')
def test_with_split_newline_escape_2(self):
self.d.write(b'foo=')
self.d.write(b'\r\nbar')
self.assert_data(b'foobar')
def test_close_and_finalize(self):
parser = Mock()
f = QuotedPrintableDecoder(parser)
f.finalize()
parser.finalize.assert_called_once_with()
f.close()
parser.close.assert_called_once_with()
def test_not_aligned(self):
"""
https://github.com/andrew-d/python-multipart/issues/6
"""
self.d.write(b'=3AX')
self.assert_data(b':X')
# Additional offset tests
self.d.write(b'=3')
self.d.write(b'AX')
self.assert_data(b':X')
self.d.write(b'q=3AX')
self.assert_data(b'q:X')
# Load our list of HTTP test cases.
http_tests_dir = os.path.join(curr_dir, 'test_data', 'http')
# Read in all test cases and load them.
NON_PARAMETRIZED_TESTS = {'single_field_blocks'}
http_tests = []
for f in os.listdir(http_tests_dir):
# Only load the HTTP test cases.
fname, ext = os.path.splitext(f)
if fname in NON_PARAMETRIZED_TESTS:
continue
if ext == '.http':
# Get the YAML file and load it too.
yaml_file = os.path.join(http_tests_dir, fname + '.yaml')
# Load both.
with open(os.path.join(http_tests_dir, f), 'rb') as f:
test_data = f.read()
with open(yaml_file, 'rb') as f:
yaml_data = yaml.safe_load(f)
http_tests.append({
'name': fname,
'test': test_data,
'result': yaml_data
})
def split_all(val):
"""
This function will split an array all possible ways. For example:
split_all([1,2,3,4])
will give:
([1], [2,3,4]), ([1,2], [3,4]), ([1,2,3], [4])
"""
for i in range(1, len(val) - 1):
yield (val[:i], val[i:])
@parametrize_class
class TestFormParser(unittest.TestCase):
def make(self, boundary, config={}):
self.ended = False
self.files = []
self.fields = []
def on_field(f):
self.fields.append(f)
def on_file(f):
self.files.append(f)
def on_end():
self.ended = True
# Get a form-parser instance.
self.f = FormParser('multipart/form-data', on_field, on_file, on_end,
boundary=boundary, config=config)
def assert_file_data(self, f, data):
o = f.file_object
o.seek(0)
file_data = o.read()
self.assertEqual(file_data, data)
def assert_file(self, field_name, file_name, data):
# Find this file.
found = None
for f in self.files:
if f.field_name == field_name:
found = f
break
# Assert that we found it.
self.assertIsNotNone(found)
try:
# Assert about this file.
self.assert_file_data(found, data)
self.assertEqual(found.file_name, file_name)
# Remove it from our list.
self.files.remove(found)
finally:
# Close our file
found.close()
def assert_field(self, name, value):
# Find this field in our fields list.
found = None
for f in self.fields:
if f.field_name == name:
found = f
break
# Assert that it exists and matches.
self.assertIsNotNone(found)
self.assertEqual(value, found.value)
# Remove it for future iterations.
self.fields.remove(found)
@parametrize('param', http_tests)
def test_http(self, param):
# Firstly, create our parser with the given boundary.
boundary = param['result']['boundary']
if isinstance(boundary, str):
boundary = boundary.encode('latin-1')
self.make(boundary)
# Now, we feed the parser with data.
exc = None
try:
processed = self.f.write(param['test'])
self.f.finalize()
except MultipartParseError as e:
processed = 0
exc = e
# print(repr(param))
# print("")
# print(repr(self.fields))
# print(repr(self.files))
# Do we expect an error?
if 'error' in param['result']['expected']:
self.assertIsNotNone(exc)
self.assertEqual(param['result']['expected']['error'], exc.offset)
return
# No error!
self.assertEqual(processed, len(param['test']))
# Assert that the parser gave us the appropriate fields/files.
for e in param['result']['expected']:
# Get our type and name.
type = e['type']
name = e['name'].encode('latin-1')
if type == 'field':
self.assert_field(name, e['data'])
elif type == 'file':
self.assert_file(
name,
e['file_name'].encode('latin-1'),
e['data']
)
else:
assert False
def test_random_splitting(self):
"""
This test runs a simple multipart body with one field and one file
through every possible split.
"""
# Load test data.
test_file = 'single_field_single_file.http'
with open(os.path.join(http_tests_dir, test_file), 'rb') as f:
test_data = f.read()
# We split the file through all cases.
for first, last in split_all(test_data):
# Create form parser.
self.make('boundary')
# Feed with data in 2 chunks.
i = 0
i += self.f.write(first)
i += self.f.write(last)
self.f.finalize()
# Assert we processed everything.
self.assertEqual(i, len(test_data))
# Assert that our file and field are here.
self.assert_field(b'field', b'test1')
self.assert_file(b'file', b'file.txt', b'test2')
def test_feed_single_bytes(self):
"""
This test parses a simple multipart body 1 byte at a time.
"""
# Load test data.
test_file = 'single_field_single_file.http'
with open(os.path.join(http_tests_dir, test_file), 'rb') as f:
test_data = f.read()
# Create form parser.
self.make('boundary')
# Write all bytes.
# NOTE: Can't simply do `for b in test_data`, since that gives
# an integer when iterating over a bytes object on Python 3.
i = 0
for x in range(len(test_data)):
b = test_data[x:x + 1]
i += self.f.write(b)
self.f.finalize()
# Assert we processed everything.
self.assertEqual(i, len(test_data))
# Assert that our file and field are here.
self.assert_field(b'field', b'test1')
self.assert_file(b'file', b'file.txt', b'test2')
def test_feed_blocks(self):
"""
This test parses a simple multipart body 1 byte at a time.
"""
# Load test data.
test_file = 'single_field_blocks.http'
with open(os.path.join(http_tests_dir, test_file), 'rb') as f:
test_data = f.read()
for c in range(1, len(test_data) + 1):
# Skip first `d` bytes - not interesting
for d in range(c):
# Create form parser.
self.make('boundary')
# Skip
i = 0
self.f.write(test_data[:d])
i += d
for x in range(d, len(test_data), c):
# Write a chunk to achieve condition
# `i == data_length - 1`
# in boundary search loop (multipatr.py:1302)
b = test_data[x:x + c]
i += self.f.write(b)
self.f.finalize()
# Assert we processed everything.
self.assertEqual(i, len(test_data))
# Assert that our field is here.
self.assert_field(b'field',
b'0123456789ABCDEFGHIJ0123456789ABCDEFGHIJ')
@slow_test
def test_request_body_fuzz(self):
"""
This test randomly fuzzes the request body to ensure that no strange
exceptions are raised and we don't end up in a strange state. The
fuzzing consists of randomly doing one of the following:
- Adding a random byte at a random offset
- Randomly deleting a single byte
- Randomly swapping two bytes
"""
# Load test data.
test_file = 'single_field_single_file.http'
with open(os.path.join(http_tests_dir, test_file), 'rb') as f:
test_data = f.read()
iterations = 1000
successes = 0
failures = 0
exceptions = 0
print("Running %d iterations of fuzz testing:" % (iterations,))
for i in range(iterations):
# Create a bytearray to mutate.
fuzz_data = bytearray(test_data)
# Pick what we're supposed to do.
choice = random.choice([1, 2, 3])
if choice == 1:
# Add a random byte.
i = random.randrange(len(test_data))
b = random.randrange(256)
fuzz_data.insert(i, b)
msg = "Inserting byte %r at offset %d" % (b, i)
elif choice == 2:
# Remove a random byte.
i = random.randrange(len(test_data))
del fuzz_data[i]
msg = "Deleting byte at offset %d" % (i,)
elif choice == 3:
# Swap two bytes.
i = random.randrange(len(test_data) - 1)
fuzz_data[i], fuzz_data[i + 1] = fuzz_data[i + 1], fuzz_data[i]
msg = "Swapping bytes %d and %d" % (i, i + 1)
# Print message, so if this crashes, we can inspect the output.
print(" " + msg)
# Create form parser.
self.make('boundary')
# Feed with data, and ignore form parser exceptions.
i = 0
try:
i = self.f.write(bytes(fuzz_data))
self.f.finalize()
except FormParserError:
exceptions += 1
else:
if i == len(fuzz_data):
successes += 1
else:
failures += 1
print("--------------------------------------------------")
print("Successes: %d" % (successes,))
print("Failures: %d" % (failures,))
print("Exceptions: %d" % (exceptions,))
@slow_test
def test_request_body_fuzz_random_data(self):
"""
This test will fuzz the multipart parser with some number of iterations
of randomly-generated data.
"""
iterations = 1000
successes = 0
failures = 0
exceptions = 0
print("Running %d iterations of fuzz testing:" % (iterations,))
for i in range(iterations):
data_size = random.randrange(100, 4096)
data = os.urandom(data_size)
print(" Testing with %d random bytes..." % (data_size,))
# Create form parser.
self.make('boundary')
# Feed with data, and ignore form parser exceptions.
i = 0
try:
i = self.f.write(bytes(data))
self.f.finalize()
except FormParserError:
exceptions += 1
else:
if i == len(data):
successes += 1
else:
failures += 1
print("--------------------------------------------------")
print("Successes: %d" % (successes,))
print("Failures: %d" % (failures,))
print("Exceptions: %d" % (exceptions,))
def test_bad_start_boundary(self):
self.make('boundary')
data = b'--boundary\rfoobar'
with self.assertRaises(MultipartParseError):
self.f.write(data)
self.make('boundary')
data = b'--boundaryfoobar'
with self.assertRaises(MultipartParseError):
i = self.f.write(data)
def test_octet_stream(self):
files = []
def on_file(f):
files.append(f)
on_field = Mock()
on_end = Mock()
f = FormParser('application/octet-stream', on_field, on_file, on_end=on_end, file_name=b'foo.txt')
self.assertTrue(isinstance(f.parser, OctetStreamParser))
f.write(b'test')
f.write(b'1234')
f.finalize()
# Assert that we only received a single file, with the right data, and that we're done.
self.assertFalse(on_field.called)
self.assertEqual(len(files), 1)
self.assert_file_data(files[0], b'test1234')
self.assertTrue(on_end.called)
def test_querystring(self):
fields = []
def on_field(f):
fields.append(f)
on_file = Mock()
on_end = Mock()
def simple_test(f):
# Reset tracking.
del fields[:]
on_file.reset_mock()
on_end.reset_mock()
# Write test data.
f.write(b'foo=bar')
f.write(b'&test=asdf')
f.finalize()
# Assert we only received 2 fields...
self.assertFalse(on_file.called)
self.assertEqual(len(fields), 2)
# ...assert that we have the correct data...
self.assertEqual(fields[0].field_name, b'foo')
self.assertEqual(fields[0].value, b'bar')
self.assertEqual(fields[1].field_name, b'test')
self.assertEqual(fields[1].value, b'asdf')
# ... and assert that we've finished.
self.assertTrue(on_end.called)
f = FormParser('application/x-www-form-urlencoded', on_field, on_file, on_end=on_end)
self.assertTrue(isinstance(f.parser, QuerystringParser))
simple_test(f)
f = FormParser('application/x-url-encoded', on_field, on_file, on_end=on_end)
self.assertTrue(isinstance(f.parser, QuerystringParser))
simple_test(f)
def test_close_methods(self):
parser = Mock()
f = FormParser('application/x-url-encoded', None, None)
f.parser = parser
f.finalize()
parser.finalize.assert_called_once_with()
f.close()
parser.close.assert_called_once_with()
def test_bad_content_type(self):
# We should raise a ValueError for a bad Content-Type
with self.assertRaises(ValueError):
f = FormParser('application/bad', None, None)
def test_no_boundary_given(self):
# We should raise a FormParserError when parsing a multipart message
# without a boundary.
with self.assertRaises(FormParserError):
f = FormParser('multipart/form-data', None, None)
def test_bad_content_transfer_encoding(self):
data = b'----boundary\r\nContent-Disposition: form-data; name="file"; filename="test.txt"\r\nContent-Type: text/plain\r\nContent-Transfer-Encoding: badstuff\r\n\r\nTest\r\n----boundary--\r\n'
files = []
def on_file(f):
files.append(f)
on_field = Mock()
on_end = Mock()
# Test with erroring.
config = {'UPLOAD_ERROR_ON_BAD_CTE': True}
f = FormParser('multipart/form-data', on_field, on_file,
on_end=on_end, boundary='--boundary', config=config)
with self.assertRaises(FormParserError):
f.write(data)
f.finalize()
# Test without erroring.
config = {'UPLOAD_ERROR_ON_BAD_CTE': False}
f = FormParser('multipart/form-data', on_field, on_file,
on_end=on_end, boundary='--boundary', config=config)
f.write(data)
f.finalize()
self.assert_file_data(files[0], b'Test')
def test_handles_None_fields(self):
fields = []
def on_field(f):
fields.append(f)
on_file = Mock()
on_end = Mock()
f = FormParser('application/x-www-form-urlencoded', on_field, on_file, on_end=on_end)
f.write(b'foo=bar&another&baz=asdf')
f.finalize()
self.assertEqual(fields[0].field_name, b'foo')
self.assertEqual(fields[0].value, b'bar')
self.assertEqual(fields[1].field_name, b'another')
self.assertEqual(fields[1].value, None)
self.assertEqual(fields[2].field_name, b'baz')
self.assertEqual(fields[2].value, b'asdf')
def test_max_size_multipart(self):
# Load test data.
test_file = 'single_field_single_file.http'
with open(os.path.join(http_tests_dir, test_file), 'rb') as f:
test_data = f.read()
# Create form parser.
self.make('boundary')
# Set the maximum length that we can process to be halfway through the
# given data.
self.f.parser.max_size = len(test_data) / 2
i = self.f.write(test_data)
self.f.finalize()
# Assert we processed the correct amount.
self.assertEqual(i, len(test_data) / 2)
def test_max_size_form_parser(self):
# Load test data.
test_file = 'single_field_single_file.http'
with open(os.path.join(http_tests_dir, test_file), 'rb') as f:
test_data = f.read()
# Create form parser setting the maximum length that we can process to
# be halfway through the given data.
size = len(test_data) / 2
self.make('boundary', config={'MAX_BODY_SIZE': size})
i = self.f.write(test_data)
self.f.finalize()
# Assert we processed the correct amount.
self.assertEqual(i, len(test_data) / 2)
def test_octet_stream_max_size(self):
files = []
def on_file(f):
files.append(f)
on_field = Mock()
on_end = Mock()
f = FormParser('application/octet-stream', on_field, on_file,
on_end=on_end, file_name=b'foo.txt',
config={'MAX_BODY_SIZE': 10})
f.write(b'0123456789012345689')
f.finalize()
self.assert_file_data(files[0], b'0123456789')
def test_invalid_max_size_multipart(self):
with self.assertRaises(ValueError):
q = MultipartParser(b'bound', max_size='foo')
class TestHelperFunctions(unittest.TestCase):
def test_create_form_parser(self):
r = create_form_parser({'Content-Type': 'application/octet-stream'},
None, None)
self.assertTrue(isinstance(r, FormParser))
def test_create_form_parser_error(self):
headers = {}
with self.assertRaises(ValueError):
create_form_parser(headers, None, None)
def test_parse_form(self):
on_field = Mock()
on_file = Mock()
parse_form(
{'Content-Type': 'application/octet-stream',
},
BytesIO(b'123456789012345'),
on_field,
on_file
)
assert on_file.call_count == 1
# Assert that the first argument of the call (a File object) has size
# 15 - i.e. all data is written.
self.assertEqual(on_file.call_args[0][0].size, 15)
def test_parse_form_content_length(self):
files = []
def on_file(file):
files.append(file)
parse_form(
{'Content-Type': 'application/octet-stream',
'Content-Length': '10'
},
BytesIO(b'123456789012345'),
None,
on_file
)
self.assertEqual(len(files), 1)
self.assertEqual(files[0].size, 10)
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestFile))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestParseOptionsHeader))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestBaseParser))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestQuerystringParser))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestOctetStreamParser))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestBase64Decoder))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestQuotedPrintableDecoder))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestFormParser))
suite.addTest(unittest.defaultTestLoader.loadTestsFromTestCase(TestHelperFunctions))
return suite
| 38,988 | Python | 28.853752 | 199 | 0.553555 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/multipart/tests/compat.py | import os
import re
import sys
import types
import functools
def ensure_in_path(path):
"""
Ensure that a given path is in the sys.path array
"""
if not os.path.isdir(path):
raise RuntimeError('Tried to add nonexisting path')
def _samefile(x, y):
try:
return os.path.samefile(x, y)
except OSError:
return False
except AttributeError:
# Probably on Windows.
path1 = os.path.abspath(x).lower()
path2 = os.path.abspath(y).lower()
return path1 == path2
# Remove existing copies of it.
for pth in sys.path:
if _samefile(pth, path):
sys.path.remove(pth)
# Add it at the beginning.
sys.path.insert(0, path)
# Check if pytest is imported. If so, we use it to create marking decorators.
# If not, we just create a function that does nothing.
try:
import pytest
except ImportError:
pytest = None
if pytest is not None:
slow_test = pytest.mark.slow_test
xfail = pytest.mark.xfail
else:
slow_test = lambda x: x
def xfail(*args, **kwargs):
if len(args) > 0 and isinstance(args[0], types.FunctionType):
return args[0]
return lambda x: x
# We don't use the pytest parametrizing function, since it seems to break
# with unittest.TestCase subclasses.
def parametrize(field_names, field_values):
# If we're not given a list of field names, we make it.
if not isinstance(field_names, (tuple, list)):
field_names = (field_names,)
field_values = [(val,) for val in field_values]
# Create a decorator that saves this list of field names and values on the
# function for later parametrizing.
def decorator(func):
func.__dict__['param_names'] = field_names
func.__dict__['param_values'] = field_values
return func
return decorator
# This is a metaclass that actually performs the parametrization.
class ParametrizingMetaclass(type):
IDENTIFIER_RE = re.compile('[^A-Za-z0-9]')
def __new__(klass, name, bases, attrs):
new_attrs = attrs.copy()
for attr_name, attr in attrs.items():
# We only care about functions
if not isinstance(attr, types.FunctionType):
continue
param_names = attr.__dict__.pop('param_names', None)
param_values = attr.__dict__.pop('param_values', None)
if param_names is None or param_values is None:
continue
# Create multiple copies of the function.
for i, values in enumerate(param_values):
assert len(param_names) == len(values)
# Get a repr of the values, and fix it to be a valid identifier
human = '_'.join(
[klass.IDENTIFIER_RE.sub('', repr(x)) for x in values]
)
# Create a new name.
# new_name = attr.__name__ + "_%d" % i
new_name = attr.__name__ + "__" + human
# Create a replacement function.
def create_new_func(func, names, values):
# Create a kwargs dictionary.
kwargs = dict(zip(names, values))
@functools.wraps(func)
def new_func(self):
return func(self, **kwargs)
# Manually set the name and return the new function.
new_func.__name__ = new_name
return new_func
# Actually create the new function.
new_func = create_new_func(attr, param_names, values)
# Save this new function in our attrs dict.
new_attrs[new_name] = new_func
# Remove the old attribute from our new dictionary.
del new_attrs[attr_name]
# We create the class as normal, except we use our new attributes.
return type.__new__(klass, name, bases, new_attrs)
# This is a class decorator that actually applies the above metaclass.
def parametrize_class(klass):
return ParametrizingMetaclass(klass.__name__,
klass.__bases__,
klass.__dict__)
| 4,266 | Python | 30.843283 | 79 | 0.569386 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/endpoints.py | import json
import typing
from starlette import status
from starlette._utils import is_async_callable
from starlette.concurrency import run_in_threadpool
from starlette.exceptions import HTTPException
from starlette.requests import Request
from starlette.responses import PlainTextResponse, Response
from starlette.types import Message, Receive, Scope, Send
from starlette.websockets import WebSocket
class HTTPEndpoint:
def __init__(self, scope: Scope, receive: Receive, send: Send) -> None:
assert scope["type"] == "http"
self.scope = scope
self.receive = receive
self.send = send
self._allowed_methods = [
method
for method in ("GET", "HEAD", "POST", "PUT", "PATCH", "DELETE", "OPTIONS")
if getattr(self, method.lower(), None) is not None
]
def __await__(self) -> typing.Generator:
return self.dispatch().__await__()
async def dispatch(self) -> None:
request = Request(self.scope, receive=self.receive)
handler_name = (
"get"
if request.method == "HEAD" and not hasattr(self, "head")
else request.method.lower()
)
handler: typing.Callable[[Request], typing.Any] = getattr(
self, handler_name, self.method_not_allowed
)
is_async = is_async_callable(handler)
if is_async:
response = await handler(request)
else:
response = await run_in_threadpool(handler, request)
await response(self.scope, self.receive, self.send)
async def method_not_allowed(self, request: Request) -> Response:
# If we're running inside a starlette application then raise an
# exception, so that the configurable exception handler can deal with
# returning the response. For plain ASGI apps, just return the response.
headers = {"Allow": ", ".join(self._allowed_methods)}
if "app" in self.scope:
raise HTTPException(status_code=405, headers=headers)
return PlainTextResponse("Method Not Allowed", status_code=405, headers=headers)
class WebSocketEndpoint:
encoding: typing.Optional[str] = None # May be "text", "bytes", or "json".
def __init__(self, scope: Scope, receive: Receive, send: Send) -> None:
assert scope["type"] == "websocket"
self.scope = scope
self.receive = receive
self.send = send
def __await__(self) -> typing.Generator:
return self.dispatch().__await__()
async def dispatch(self) -> None:
websocket = WebSocket(self.scope, receive=self.receive, send=self.send)
await self.on_connect(websocket)
close_code = status.WS_1000_NORMAL_CLOSURE
try:
while True:
message = await websocket.receive()
if message["type"] == "websocket.receive":
data = await self.decode(websocket, message)
await self.on_receive(websocket, data)
elif message["type"] == "websocket.disconnect":
close_code = int(
message.get("code") or status.WS_1000_NORMAL_CLOSURE
)
break
except Exception as exc:
close_code = status.WS_1011_INTERNAL_ERROR
raise exc
finally:
await self.on_disconnect(websocket, close_code)
async def decode(self, websocket: WebSocket, message: Message) -> typing.Any:
if self.encoding == "text":
if "text" not in message:
await websocket.close(code=status.WS_1003_UNSUPPORTED_DATA)
raise RuntimeError("Expected text websocket messages, but got bytes")
return message["text"]
elif self.encoding == "bytes":
if "bytes" not in message:
await websocket.close(code=status.WS_1003_UNSUPPORTED_DATA)
raise RuntimeError("Expected bytes websocket messages, but got text")
return message["bytes"]
elif self.encoding == "json":
if message.get("text") is not None:
text = message["text"]
else:
text = message["bytes"].decode("utf-8")
try:
return json.loads(text)
except json.decoder.JSONDecodeError:
await websocket.close(code=status.WS_1003_UNSUPPORTED_DATA)
raise RuntimeError("Malformed JSON data received.")
assert (
self.encoding is None
), f"Unsupported 'encoding' attribute {self.encoding}"
return message["text"] if message.get("text") else message["bytes"]
async def on_connect(self, websocket: WebSocket) -> None:
"""Override to handle an incoming websocket connection"""
await websocket.accept()
async def on_receive(self, websocket: WebSocket, data: typing.Any) -> None:
"""Override to handle an incoming websocket message"""
async def on_disconnect(self, websocket: WebSocket, close_code: int) -> None:
"""Override to handle a disconnecting websocket"""
| 5,145 | Python | 37.691729 | 88 | 0.607191 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/config.py | import os
import typing
from collections.abc import MutableMapping
from pathlib import Path
class undefined:
pass
class EnvironError(Exception):
pass
class Environ(MutableMapping):
def __init__(self, environ: typing.MutableMapping = os.environ):
self._environ = environ
self._has_been_read: typing.Set[typing.Any] = set()
def __getitem__(self, key: typing.Any) -> typing.Any:
self._has_been_read.add(key)
return self._environ.__getitem__(key)
def __setitem__(self, key: typing.Any, value: typing.Any) -> None:
if key in self._has_been_read:
raise EnvironError(
f"Attempting to set environ['{key}'], but the value has already been "
"read."
)
self._environ.__setitem__(key, value)
def __delitem__(self, key: typing.Any) -> None:
if key in self._has_been_read:
raise EnvironError(
f"Attempting to delete environ['{key}'], but the value has already "
"been read."
)
self._environ.__delitem__(key)
def __iter__(self) -> typing.Iterator:
return iter(self._environ)
def __len__(self) -> int:
return len(self._environ)
environ = Environ()
T = typing.TypeVar("T")
class Config:
def __init__(
self,
env_file: typing.Optional[typing.Union[str, Path]] = None,
environ: typing.Mapping[str, str] = environ,
env_prefix: str = "",
) -> None:
self.environ = environ
self.env_prefix = env_prefix
self.file_values: typing.Dict[str, str] = {}
if env_file is not None and os.path.isfile(env_file):
self.file_values = self._read_file(env_file)
@typing.overload
def __call__(self, key: str, *, default: None) -> typing.Optional[str]:
...
@typing.overload
def __call__(self, key: str, cast: typing.Type[T], default: T = ...) -> T:
...
@typing.overload
def __call__(
self, key: str, cast: typing.Type[str] = ..., default: str = ...
) -> str:
...
@typing.overload
def __call__(
self,
key: str,
cast: typing.Callable[[typing.Any], T] = ...,
default: typing.Any = ...,
) -> T:
...
@typing.overload
def __call__(
self, key: str, cast: typing.Type[str] = ..., default: T = ...
) -> typing.Union[T, str]:
...
def __call__(
self,
key: str,
cast: typing.Optional[typing.Callable] = None,
default: typing.Any = undefined,
) -> typing.Any:
return self.get(key, cast, default)
def get(
self,
key: str,
cast: typing.Optional[typing.Callable] = None,
default: typing.Any = undefined,
) -> typing.Any:
key = self.env_prefix + key
if key in self.environ:
value = self.environ[key]
return self._perform_cast(key, value, cast)
if key in self.file_values:
value = self.file_values[key]
return self._perform_cast(key, value, cast)
if default is not undefined:
return self._perform_cast(key, default, cast)
raise KeyError(f"Config '{key}' is missing, and has no default.")
def _read_file(self, file_name: typing.Union[str, Path]) -> typing.Dict[str, str]:
file_values: typing.Dict[str, str] = {}
with open(file_name) as input_file:
for line in input_file.readlines():
line = line.strip()
if "=" in line and not line.startswith("#"):
key, value = line.split("=", 1)
key = key.strip()
value = value.strip().strip("\"'")
file_values[key] = value
return file_values
def _perform_cast(
self, key: str, value: typing.Any, cast: typing.Optional[typing.Callable] = None
) -> typing.Any:
if cast is None or value is None:
return value
elif cast is bool and isinstance(value, str):
mapping = {"true": True, "1": True, "false": False, "0": False}
value = value.lower()
if value not in mapping:
raise ValueError(
f"Config '{key}' has value '{value}'. Not a valid bool."
)
return mapping[value]
try:
return cast(value)
except (TypeError, ValueError):
raise ValueError(
f"Config '{key}' has value '{value}'. Not a valid {cast.__name__}."
)
| 4,607 | Python | 29.72 | 88 | 0.533536 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/exceptions.py | import http
import typing
import warnings
__all__ = ("HTTPException", "WebSocketException")
class HTTPException(Exception):
def __init__(
self,
status_code: int,
detail: typing.Optional[str] = None,
headers: typing.Optional[dict] = None,
) -> None:
if detail is None:
detail = http.HTTPStatus(status_code).phrase
self.status_code = status_code
self.detail = detail
self.headers = headers
def __repr__(self) -> str:
class_name = self.__class__.__name__
return f"{class_name}(status_code={self.status_code!r}, detail={self.detail!r})"
class WebSocketException(Exception):
def __init__(self, code: int, reason: typing.Optional[str] = None) -> None:
self.code = code
self.reason = reason or ""
def __repr__(self) -> str:
class_name = self.__class__.__name__
return f"{class_name}(code={self.code!r}, reason={self.reason!r})"
__deprecated__ = "ExceptionMiddleware"
def __getattr__(name: str) -> typing.Any: # pragma: no cover
if name == __deprecated__:
from starlette.middleware.exceptions import ExceptionMiddleware
warnings.warn(
f"{__deprecated__} is deprecated on `starlette.exceptions`. "
f"Import it from `starlette.middleware.exceptions` instead.",
category=DeprecationWarning,
stacklevel=3,
)
return ExceptionMiddleware
raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
def __dir__() -> typing.List[str]:
return sorted(list(__all__) + [__deprecated__]) # pragma: no cover
| 1,648 | Python | 28.981818 | 88 | 0.603155 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/datastructures.py | import typing
from collections.abc import Sequence
from shlex import shlex
from urllib.parse import SplitResult, parse_qsl, urlencode, urlsplit
from starlette.concurrency import run_in_threadpool
from starlette.types import Scope
class Address(typing.NamedTuple):
host: str
port: int
_KeyType = typing.TypeVar("_KeyType")
# Mapping keys are invariant but their values are covariant since
# you can only read them
# that is, you can't do `Mapping[str, Animal]()["fido"] = Dog()`
_CovariantValueType = typing.TypeVar("_CovariantValueType", covariant=True)
class URL:
def __init__(
self,
url: str = "",
scope: typing.Optional[Scope] = None,
**components: typing.Any,
) -> None:
if scope is not None:
assert not url, 'Cannot set both "url" and "scope".'
assert not components, 'Cannot set both "scope" and "**components".'
scheme = scope.get("scheme", "http")
server = scope.get("server", None)
path = scope.get("root_path", "") + scope["path"]
query_string = scope.get("query_string", b"")
host_header = None
for key, value in scope["headers"]:
if key == b"host":
host_header = value.decode("latin-1")
break
if host_header is not None:
url = f"{scheme}://{host_header}{path}"
elif server is None:
url = path
else:
host, port = server
default_port = {"http": 80, "https": 443, "ws": 80, "wss": 443}[scheme]
if port == default_port:
url = f"{scheme}://{host}{path}"
else:
url = f"{scheme}://{host}:{port}{path}"
if query_string:
url += "?" + query_string.decode()
elif components:
assert not url, 'Cannot set both "url" and "**components".'
url = URL("").replace(**components).components.geturl()
self._url = url
@property
def components(self) -> SplitResult:
if not hasattr(self, "_components"):
self._components = urlsplit(self._url)
return self._components
@property
def scheme(self) -> str:
return self.components.scheme
@property
def netloc(self) -> str:
return self.components.netloc
@property
def path(self) -> str:
return self.components.path
@property
def query(self) -> str:
return self.components.query
@property
def fragment(self) -> str:
return self.components.fragment
@property
def username(self) -> typing.Union[None, str]:
return self.components.username
@property
def password(self) -> typing.Union[None, str]:
return self.components.password
@property
def hostname(self) -> typing.Union[None, str]:
return self.components.hostname
@property
def port(self) -> typing.Optional[int]:
return self.components.port
@property
def is_secure(self) -> bool:
return self.scheme in ("https", "wss")
def replace(self, **kwargs: typing.Any) -> "URL":
if (
"username" in kwargs
or "password" in kwargs
or "hostname" in kwargs
or "port" in kwargs
):
hostname = kwargs.pop("hostname", None)
port = kwargs.pop("port", self.port)
username = kwargs.pop("username", self.username)
password = kwargs.pop("password", self.password)
if hostname is None:
netloc = self.netloc
_, _, hostname = netloc.rpartition("@")
if hostname[-1] != "]":
hostname = hostname.rsplit(":", 1)[0]
netloc = hostname
if port is not None:
netloc += f":{port}"
if username is not None:
userpass = username
if password is not None:
userpass += f":{password}"
netloc = f"{userpass}@{netloc}"
kwargs["netloc"] = netloc
components = self.components._replace(**kwargs)
return self.__class__(components.geturl())
def include_query_params(self, **kwargs: typing.Any) -> "URL":
params = MultiDict(parse_qsl(self.query, keep_blank_values=True))
params.update({str(key): str(value) for key, value in kwargs.items()})
query = urlencode(params.multi_items())
return self.replace(query=query)
def replace_query_params(self, **kwargs: typing.Any) -> "URL":
query = urlencode([(str(key), str(value)) for key, value in kwargs.items()])
return self.replace(query=query)
def remove_query_params(
self, keys: typing.Union[str, typing.Sequence[str]]
) -> "URL":
if isinstance(keys, str):
keys = [keys]
params = MultiDict(parse_qsl(self.query, keep_blank_values=True))
for key in keys:
params.pop(key, None)
query = urlencode(params.multi_items())
return self.replace(query=query)
def __eq__(self, other: typing.Any) -> bool:
return str(self) == str(other)
def __str__(self) -> str:
return self._url
def __repr__(self) -> str:
url = str(self)
if self.password:
url = str(self.replace(password="********"))
return f"{self.__class__.__name__}({repr(url)})"
class URLPath(str):
"""
A URL path string that may also hold an associated protocol and/or host.
Used by the routing to return `url_path_for` matches.
"""
def __new__(cls, path: str, protocol: str = "", host: str = "") -> "URLPath":
assert protocol in ("http", "websocket", "")
return str.__new__(cls, path)
def __init__(self, path: str, protocol: str = "", host: str = "") -> None:
self.protocol = protocol
self.host = host
def make_absolute_url(self, base_url: typing.Union[str, URL]) -> str:
if isinstance(base_url, str):
base_url = URL(base_url)
if self.protocol:
scheme = {
"http": {True: "https", False: "http"},
"websocket": {True: "wss", False: "ws"},
}[self.protocol][base_url.is_secure]
else:
scheme = base_url.scheme
netloc = self.host or base_url.netloc
path = base_url.path.rstrip("/") + str(self)
return str(URL(scheme=scheme, netloc=netloc, path=path))
class Secret:
"""
Holds a string value that should not be revealed in tracebacks etc.
You should cast the value to `str` at the point it is required.
"""
def __init__(self, value: str):
self._value = value
def __repr__(self) -> str:
class_name = self.__class__.__name__
return f"{class_name}('**********')"
def __str__(self) -> str:
return self._value
def __bool__(self) -> bool:
return bool(self._value)
class CommaSeparatedStrings(Sequence):
def __init__(self, value: typing.Union[str, typing.Sequence[str]]):
if isinstance(value, str):
splitter = shlex(value, posix=True)
splitter.whitespace = ","
splitter.whitespace_split = True
self._items = [item.strip() for item in splitter]
else:
self._items = list(value)
def __len__(self) -> int:
return len(self._items)
def __getitem__(self, index: typing.Union[int, slice]) -> typing.Any:
return self._items[index]
def __iter__(self) -> typing.Iterator[str]:
return iter(self._items)
def __repr__(self) -> str:
class_name = self.__class__.__name__
items = [item for item in self]
return f"{class_name}({items!r})"
def __str__(self) -> str:
return ", ".join(repr(item) for item in self)
class ImmutableMultiDict(typing.Mapping[_KeyType, _CovariantValueType]):
_dict: typing.Dict[_KeyType, _CovariantValueType]
def __init__(
self,
*args: typing.Union[
"ImmutableMultiDict[_KeyType, _CovariantValueType]",
typing.Mapping[_KeyType, _CovariantValueType],
typing.Iterable[typing.Tuple[_KeyType, _CovariantValueType]],
],
**kwargs: typing.Any,
) -> None:
assert len(args) < 2, "Too many arguments."
value: typing.Any = args[0] if args else []
if kwargs:
value = (
ImmutableMultiDict(value).multi_items()
+ ImmutableMultiDict(kwargs).multi_items() # type: ignore[operator]
)
if not value:
_items: typing.List[typing.Tuple[typing.Any, typing.Any]] = []
elif hasattr(value, "multi_items"):
value = typing.cast(
ImmutableMultiDict[_KeyType, _CovariantValueType], value
)
_items = list(value.multi_items())
elif hasattr(value, "items"):
value = typing.cast(typing.Mapping[_KeyType, _CovariantValueType], value)
_items = list(value.items())
else:
value = typing.cast(
typing.List[typing.Tuple[typing.Any, typing.Any]], value
)
_items = list(value)
self._dict = {k: v for k, v in _items}
self._list = _items
def getlist(self, key: typing.Any) -> typing.List[_CovariantValueType]:
return [item_value for item_key, item_value in self._list if item_key == key]
def keys(self) -> typing.KeysView[_KeyType]:
return self._dict.keys()
def values(self) -> typing.ValuesView[_CovariantValueType]:
return self._dict.values()
def items(self) -> typing.ItemsView[_KeyType, _CovariantValueType]:
return self._dict.items()
def multi_items(self) -> typing.List[typing.Tuple[_KeyType, _CovariantValueType]]:
return list(self._list)
def __getitem__(self, key: _KeyType) -> _CovariantValueType:
return self._dict[key]
def __contains__(self, key: typing.Any) -> bool:
return key in self._dict
def __iter__(self) -> typing.Iterator[_KeyType]:
return iter(self.keys())
def __len__(self) -> int:
return len(self._dict)
def __eq__(self, other: typing.Any) -> bool:
if not isinstance(other, self.__class__):
return False
return sorted(self._list) == sorted(other._list)
def __repr__(self) -> str:
class_name = self.__class__.__name__
items = self.multi_items()
return f"{class_name}({items!r})"
class MultiDict(ImmutableMultiDict[typing.Any, typing.Any]):
def __setitem__(self, key: typing.Any, value: typing.Any) -> None:
self.setlist(key, [value])
def __delitem__(self, key: typing.Any) -> None:
self._list = [(k, v) for k, v in self._list if k != key]
del self._dict[key]
def pop(self, key: typing.Any, default: typing.Any = None) -> typing.Any:
self._list = [(k, v) for k, v in self._list if k != key]
return self._dict.pop(key, default)
def popitem(self) -> typing.Tuple:
key, value = self._dict.popitem()
self._list = [(k, v) for k, v in self._list if k != key]
return key, value
def poplist(self, key: typing.Any) -> typing.List:
values = [v for k, v in self._list if k == key]
self.pop(key)
return values
def clear(self) -> None:
self._dict.clear()
self._list.clear()
def setdefault(self, key: typing.Any, default: typing.Any = None) -> typing.Any:
if key not in self:
self._dict[key] = default
self._list.append((key, default))
return self[key]
def setlist(self, key: typing.Any, values: typing.List) -> None:
if not values:
self.pop(key, None)
else:
existing_items = [(k, v) for (k, v) in self._list if k != key]
self._list = existing_items + [(key, value) for value in values]
self._dict[key] = values[-1]
def append(self, key: typing.Any, value: typing.Any) -> None:
self._list.append((key, value))
self._dict[key] = value
def update(
self,
*args: typing.Union[
"MultiDict",
typing.Mapping,
typing.List[typing.Tuple[typing.Any, typing.Any]],
],
**kwargs: typing.Any,
) -> None:
value = MultiDict(*args, **kwargs)
existing_items = [(k, v) for (k, v) in self._list if k not in value.keys()]
self._list = existing_items + value.multi_items()
self._dict.update(value)
class QueryParams(ImmutableMultiDict[str, str]):
"""
An immutable multidict.
"""
def __init__(
self,
*args: typing.Union[
"ImmutableMultiDict",
typing.Mapping,
typing.List[typing.Tuple[typing.Any, typing.Any]],
str,
bytes,
],
**kwargs: typing.Any,
) -> None:
assert len(args) < 2, "Too many arguments."
value = args[0] if args else []
if isinstance(value, str):
super().__init__(parse_qsl(value, keep_blank_values=True), **kwargs)
elif isinstance(value, bytes):
super().__init__(
parse_qsl(value.decode("latin-1"), keep_blank_values=True), **kwargs
)
else:
super().__init__(*args, **kwargs) # type: ignore[arg-type]
self._list = [(str(k), str(v)) for k, v in self._list]
self._dict = {str(k): str(v) for k, v in self._dict.items()}
def __str__(self) -> str:
return urlencode(self._list)
def __repr__(self) -> str:
class_name = self.__class__.__name__
query_string = str(self)
return f"{class_name}({query_string!r})"
class UploadFile:
"""
An uploaded file included as part of the request data.
"""
def __init__(
self,
file: typing.BinaryIO,
*,
size: typing.Optional[int] = None,
filename: typing.Optional[str] = None,
headers: "typing.Optional[Headers]" = None,
) -> None:
self.filename = filename
self.file = file
self.size = size
self.headers = headers or Headers()
@property
def content_type(self) -> typing.Optional[str]:
return self.headers.get("content-type", None)
@property
def _in_memory(self) -> bool:
# check for SpooledTemporaryFile._rolled
rolled_to_disk = getattr(self.file, "_rolled", True)
return not rolled_to_disk
async def write(self, data: bytes) -> None:
if self.size is not None:
self.size += len(data)
if self._in_memory:
self.file.write(data)
else:
await run_in_threadpool(self.file.write, data)
async def read(self, size: int = -1) -> bytes:
if self._in_memory:
return self.file.read(size)
return await run_in_threadpool(self.file.read, size)
async def seek(self, offset: int) -> None:
if self._in_memory:
self.file.seek(offset)
else:
await run_in_threadpool(self.file.seek, offset)
async def close(self) -> None:
if self._in_memory:
self.file.close()
else:
await run_in_threadpool(self.file.close)
class FormData(ImmutableMultiDict[str, typing.Union[UploadFile, str]]):
"""
An immutable multidict, containing both file uploads and text input.
"""
def __init__(
self,
*args: typing.Union[
"FormData",
typing.Mapping[str, typing.Union[str, UploadFile]],
typing.List[typing.Tuple[str, typing.Union[str, UploadFile]]],
],
**kwargs: typing.Union[str, UploadFile],
) -> None:
super().__init__(*args, **kwargs)
async def close(self) -> None:
for key, value in self.multi_items():
if isinstance(value, UploadFile):
await value.close()
class Headers(typing.Mapping[str, str]):
"""
An immutable, case-insensitive multidict.
"""
def __init__(
self,
headers: typing.Optional[typing.Mapping[str, str]] = None,
raw: typing.Optional[typing.List[typing.Tuple[bytes, bytes]]] = None,
scope: typing.Optional[typing.MutableMapping[str, typing.Any]] = None,
) -> None:
self._list: typing.List[typing.Tuple[bytes, bytes]] = []
if headers is not None:
assert raw is None, 'Cannot set both "headers" and "raw".'
assert scope is None, 'Cannot set both "headers" and "scope".'
self._list = [
(key.lower().encode("latin-1"), value.encode("latin-1"))
for key, value in headers.items()
]
elif raw is not None:
assert scope is None, 'Cannot set both "raw" and "scope".'
self._list = raw
elif scope is not None:
# scope["headers"] isn't necessarily a list
# it might be a tuple or other iterable
self._list = scope["headers"] = list(scope["headers"])
@property
def raw(self) -> typing.List[typing.Tuple[bytes, bytes]]:
return list(self._list)
def keys(self) -> typing.List[str]: # type: ignore[override]
return [key.decode("latin-1") for key, value in self._list]
def values(self) -> typing.List[str]: # type: ignore[override]
return [value.decode("latin-1") for key, value in self._list]
def items(self) -> typing.List[typing.Tuple[str, str]]: # type: ignore[override]
return [
(key.decode("latin-1"), value.decode("latin-1"))
for key, value in self._list
]
def getlist(self, key: str) -> typing.List[str]:
get_header_key = key.lower().encode("latin-1")
return [
item_value.decode("latin-1")
for item_key, item_value in self._list
if item_key == get_header_key
]
def mutablecopy(self) -> "MutableHeaders":
return MutableHeaders(raw=self._list[:])
def __getitem__(self, key: str) -> str:
get_header_key = key.lower().encode("latin-1")
for header_key, header_value in self._list:
if header_key == get_header_key:
return header_value.decode("latin-1")
raise KeyError(key)
def __contains__(self, key: typing.Any) -> bool:
get_header_key = key.lower().encode("latin-1")
for header_key, header_value in self._list:
if header_key == get_header_key:
return True
return False
def __iter__(self) -> typing.Iterator[typing.Any]:
return iter(self.keys())
def __len__(self) -> int:
return len(self._list)
def __eq__(self, other: typing.Any) -> bool:
if not isinstance(other, Headers):
return False
return sorted(self._list) == sorted(other._list)
def __repr__(self) -> str:
class_name = self.__class__.__name__
as_dict = dict(self.items())
if len(as_dict) == len(self):
return f"{class_name}({as_dict!r})"
return f"{class_name}(raw={self.raw!r})"
class MutableHeaders(Headers):
def __setitem__(self, key: str, value: str) -> None:
"""
Set the header `key` to `value`, removing any duplicate entries.
Retains insertion order.
"""
set_key = key.lower().encode("latin-1")
set_value = value.encode("latin-1")
found_indexes: "typing.List[int]" = []
for idx, (item_key, item_value) in enumerate(self._list):
if item_key == set_key:
found_indexes.append(idx)
for idx in reversed(found_indexes[1:]):
del self._list[idx]
if found_indexes:
idx = found_indexes[0]
self._list[idx] = (set_key, set_value)
else:
self._list.append((set_key, set_value))
def __delitem__(self, key: str) -> None:
"""
Remove the header `key`.
"""
del_key = key.lower().encode("latin-1")
pop_indexes: "typing.List[int]" = []
for idx, (item_key, item_value) in enumerate(self._list):
if item_key == del_key:
pop_indexes.append(idx)
for idx in reversed(pop_indexes):
del self._list[idx]
def __ior__(self, other: typing.Mapping[str, str]) -> "MutableHeaders":
if not isinstance(other, typing.Mapping):
raise TypeError(f"Expected a mapping but got {other.__class__.__name__}")
self.update(other)
return self
def __or__(self, other: typing.Mapping[str, str]) -> "MutableHeaders":
if not isinstance(other, typing.Mapping):
raise TypeError(f"Expected a mapping but got {other.__class__.__name__}")
new = self.mutablecopy()
new.update(other)
return new
@property
def raw(self) -> typing.List[typing.Tuple[bytes, bytes]]:
return self._list
def setdefault(self, key: str, value: str) -> str:
"""
If the header `key` does not exist, then set it to `value`.
Returns the header value.
"""
set_key = key.lower().encode("latin-1")
set_value = value.encode("latin-1")
for idx, (item_key, item_value) in enumerate(self._list):
if item_key == set_key:
return item_value.decode("latin-1")
self._list.append((set_key, set_value))
return value
def update(self, other: typing.Mapping[str, str]) -> None:
for key, val in other.items():
self[key] = val
def append(self, key: str, value: str) -> None:
"""
Append a header, preserving any duplicate entries.
"""
append_key = key.lower().encode("latin-1")
append_value = value.encode("latin-1")
self._list.append((append_key, append_value))
def add_vary_header(self, vary: str) -> None:
existing = self.get("vary")
if existing is not None:
vary = ", ".join([existing, vary])
self["vary"] = vary
class State:
"""
An object that can be used to store arbitrary state.
Used for `request.state` and `app.state`.
"""
_state: typing.Dict[str, typing.Any]
def __init__(self, state: typing.Optional[typing.Dict[str, typing.Any]] = None):
if state is None:
state = {}
super().__setattr__("_state", state)
def __setattr__(self, key: typing.Any, value: typing.Any) -> None:
self._state[key] = value
def __getattr__(self, key: typing.Any) -> typing.Any:
try:
return self._state[key]
except KeyError:
message = "'{}' object has no attribute '{}'"
raise AttributeError(message.format(self.__class__.__name__, key))
def __delattr__(self, key: typing.Any) -> None:
del self._state[key]
| 23,092 | Python | 31.571227 | 87 | 0.554867 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/responses.py | import http.cookies
import json
import os
import stat
import sys
import typing
from datetime import datetime
from email.utils import format_datetime, formatdate
from functools import partial
from mimetypes import guess_type as mimetypes_guess_type
from urllib.parse import quote
import anyio
from starlette._compat import md5_hexdigest
from starlette.background import BackgroundTask
from starlette.concurrency import iterate_in_threadpool
from starlette.datastructures import URL, MutableHeaders
from starlette.types import Receive, Scope, Send
if sys.version_info >= (3, 8): # pragma: no cover
from typing import Literal
else: # pragma: no cover
from typing_extensions import Literal
# Workaround for adding samesite support to pre 3.8 python
http.cookies.Morsel._reserved["samesite"] = "SameSite" # type: ignore[attr-defined]
# Compatibility wrapper for `mimetypes.guess_type` to support `os.PathLike` on <py3.8
def guess_type(
url: typing.Union[str, "os.PathLike[str]"], strict: bool = True
) -> typing.Tuple[typing.Optional[str], typing.Optional[str]]:
if sys.version_info < (3, 8): # pragma: no cover
url = os.fspath(url)
return mimetypes_guess_type(url, strict)
class Response:
media_type = None
charset = "utf-8"
def __init__(
self,
content: typing.Any = None,
status_code: int = 200,
headers: typing.Optional[typing.Mapping[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
) -> None:
self.status_code = status_code
if media_type is not None:
self.media_type = media_type
self.background = background
self.body = self.render(content)
self.init_headers(headers)
def render(self, content: typing.Any) -> bytes:
if content is None:
return b""
if isinstance(content, bytes):
return content
return content.encode(self.charset)
def init_headers(
self, headers: typing.Optional[typing.Mapping[str, str]] = None
) -> None:
if headers is None:
raw_headers: typing.List[typing.Tuple[bytes, bytes]] = []
populate_content_length = True
populate_content_type = True
else:
raw_headers = [
(k.lower().encode("latin-1"), v.encode("latin-1"))
for k, v in headers.items()
]
keys = [h[0] for h in raw_headers]
populate_content_length = b"content-length" not in keys
populate_content_type = b"content-type" not in keys
body = getattr(self, "body", None)
if (
body is not None
and populate_content_length
and not (self.status_code < 200 or self.status_code in (204, 304))
):
content_length = str(len(body))
raw_headers.append((b"content-length", content_length.encode("latin-1")))
content_type = self.media_type
if content_type is not None and populate_content_type:
if content_type.startswith("text/"):
content_type += "; charset=" + self.charset
raw_headers.append((b"content-type", content_type.encode("latin-1")))
self.raw_headers = raw_headers
@property
def headers(self) -> MutableHeaders:
if not hasattr(self, "_headers"):
self._headers = MutableHeaders(raw=self.raw_headers)
return self._headers
def set_cookie(
self,
key: str,
value: str = "",
max_age: typing.Optional[int] = None,
expires: typing.Optional[typing.Union[datetime, str, int]] = None,
path: str = "/",
domain: typing.Optional[str] = None,
secure: bool = False,
httponly: bool = False,
samesite: typing.Optional[Literal["lax", "strict", "none"]] = "lax",
) -> None:
cookie: "http.cookies.BaseCookie[str]" = http.cookies.SimpleCookie()
cookie[key] = value
if max_age is not None:
cookie[key]["max-age"] = max_age
if expires is not None:
if isinstance(expires, datetime):
cookie[key]["expires"] = format_datetime(expires, usegmt=True)
else:
cookie[key]["expires"] = expires
if path is not None:
cookie[key]["path"] = path
if domain is not None:
cookie[key]["domain"] = domain
if secure:
cookie[key]["secure"] = True
if httponly:
cookie[key]["httponly"] = True
if samesite is not None:
assert samesite.lower() in [
"strict",
"lax",
"none",
], "samesite must be either 'strict', 'lax' or 'none'"
cookie[key]["samesite"] = samesite
cookie_val = cookie.output(header="").strip()
self.raw_headers.append((b"set-cookie", cookie_val.encode("latin-1")))
def delete_cookie(
self,
key: str,
path: str = "/",
domain: typing.Optional[str] = None,
secure: bool = False,
httponly: bool = False,
samesite: typing.Optional[Literal["lax", "strict", "none"]] = "lax",
) -> None:
self.set_cookie(
key,
max_age=0,
expires=0,
path=path,
domain=domain,
secure=secure,
httponly=httponly,
samesite=samesite,
)
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
await send(
{
"type": "http.response.start",
"status": self.status_code,
"headers": self.raw_headers,
}
)
await send({"type": "http.response.body", "body": self.body})
if self.background is not None:
await self.background()
class HTMLResponse(Response):
media_type = "text/html"
class PlainTextResponse(Response):
media_type = "text/plain"
class JSONResponse(Response):
media_type = "application/json"
def __init__(
self,
content: typing.Any,
status_code: int = 200,
headers: typing.Optional[typing.Dict[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
) -> None:
super().__init__(content, status_code, headers, media_type, background)
def render(self, content: typing.Any) -> bytes:
return json.dumps(
content,
ensure_ascii=False,
allow_nan=False,
indent=None,
separators=(",", ":"),
).encode("utf-8")
class RedirectResponse(Response):
def __init__(
self,
url: typing.Union[str, URL],
status_code: int = 307,
headers: typing.Optional[typing.Mapping[str, str]] = None,
background: typing.Optional[BackgroundTask] = None,
) -> None:
super().__init__(
content=b"", status_code=status_code, headers=headers, background=background
)
self.headers["location"] = quote(str(url), safe=":/%#?=@[]!$&'()*+,;")
Content = typing.Union[str, bytes]
SyncContentStream = typing.Iterator[Content]
AsyncContentStream = typing.AsyncIterable[Content]
ContentStream = typing.Union[AsyncContentStream, SyncContentStream]
class StreamingResponse(Response):
body_iterator: AsyncContentStream
def __init__(
self,
content: ContentStream,
status_code: int = 200,
headers: typing.Optional[typing.Mapping[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
) -> None:
if isinstance(content, typing.AsyncIterable):
self.body_iterator = content
else:
self.body_iterator = iterate_in_threadpool(content)
self.status_code = status_code
self.media_type = self.media_type if media_type is None else media_type
self.background = background
self.init_headers(headers)
async def listen_for_disconnect(self, receive: Receive) -> None:
while True:
message = await receive()
if message["type"] == "http.disconnect":
break
async def stream_response(self, send: Send) -> None:
await send(
{
"type": "http.response.start",
"status": self.status_code,
"headers": self.raw_headers,
}
)
async for chunk in self.body_iterator:
if not isinstance(chunk, bytes):
chunk = chunk.encode(self.charset)
await send({"type": "http.response.body", "body": chunk, "more_body": True})
await send({"type": "http.response.body", "body": b"", "more_body": False})
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
async with anyio.create_task_group() as task_group:
async def wrap(func: "typing.Callable[[], typing.Awaitable[None]]") -> None:
await func()
task_group.cancel_scope.cancel()
task_group.start_soon(wrap, partial(self.stream_response, send))
await wrap(partial(self.listen_for_disconnect, receive))
if self.background is not None:
await self.background()
class FileResponse(Response):
chunk_size = 64 * 1024
def __init__(
self,
path: typing.Union[str, "os.PathLike[str]"],
status_code: int = 200,
headers: typing.Optional[typing.Mapping[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
filename: typing.Optional[str] = None,
stat_result: typing.Optional[os.stat_result] = None,
method: typing.Optional[str] = None,
content_disposition_type: str = "attachment",
) -> None:
self.path = path
self.status_code = status_code
self.filename = filename
self.send_header_only = method is not None and method.upper() == "HEAD"
if media_type is None:
media_type = guess_type(filename or path)[0] or "text/plain"
self.media_type = media_type
self.background = background
self.init_headers(headers)
if self.filename is not None:
content_disposition_filename = quote(self.filename)
if content_disposition_filename != self.filename:
content_disposition = "{}; filename*=utf-8''{}".format(
content_disposition_type, content_disposition_filename
)
else:
content_disposition = '{}; filename="{}"'.format(
content_disposition_type, self.filename
)
self.headers.setdefault("content-disposition", content_disposition)
self.stat_result = stat_result
if stat_result is not None:
self.set_stat_headers(stat_result)
def set_stat_headers(self, stat_result: os.stat_result) -> None:
content_length = str(stat_result.st_size)
last_modified = formatdate(stat_result.st_mtime, usegmt=True)
etag_base = str(stat_result.st_mtime) + "-" + str(stat_result.st_size)
etag = md5_hexdigest(etag_base.encode(), usedforsecurity=False)
self.headers.setdefault("content-length", content_length)
self.headers.setdefault("last-modified", last_modified)
self.headers.setdefault("etag", etag)
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if self.stat_result is None:
try:
stat_result = await anyio.to_thread.run_sync(os.stat, self.path)
self.set_stat_headers(stat_result)
except FileNotFoundError:
raise RuntimeError(f"File at path {self.path} does not exist.")
else:
mode = stat_result.st_mode
if not stat.S_ISREG(mode):
raise RuntimeError(f"File at path {self.path} is not a file.")
await send(
{
"type": "http.response.start",
"status": self.status_code,
"headers": self.raw_headers,
}
)
if self.send_header_only:
await send({"type": "http.response.body", "body": b"", "more_body": False})
else:
async with await anyio.open_file(self.path, mode="rb") as file:
more_body = True
while more_body:
chunk = await file.read(self.chunk_size)
more_body = len(chunk) == self.chunk_size
await send(
{
"type": "http.response.body",
"body": chunk,
"more_body": more_body,
}
)
if self.background is not None:
await self.background()
| 13,147 | Python | 34.825613 | 88 | 0.573135 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/background.py | import sys
import typing
if sys.version_info >= (3, 10): # pragma: no cover
from typing import ParamSpec
else: # pragma: no cover
from typing_extensions import ParamSpec
from starlette._utils import is_async_callable
from starlette.concurrency import run_in_threadpool
P = ParamSpec("P")
class BackgroundTask:
def __init__(
self, func: typing.Callable[P, typing.Any], *args: P.args, **kwargs: P.kwargs
) -> None:
self.func = func
self.args = args
self.kwargs = kwargs
self.is_async = is_async_callable(func)
async def __call__(self) -> None:
if self.is_async:
await self.func(*self.args, **self.kwargs)
else:
await run_in_threadpool(self.func, *self.args, **self.kwargs)
class BackgroundTasks(BackgroundTask):
def __init__(self, tasks: typing.Optional[typing.Sequence[BackgroundTask]] = None):
self.tasks = list(tasks) if tasks else []
def add_task(
self, func: typing.Callable[P, typing.Any], *args: P.args, **kwargs: P.kwargs
) -> None:
task = BackgroundTask(func, *args, **kwargs)
self.tasks.append(task)
async def __call__(self) -> None:
for task in self.tasks:
await task()
| 1,259 | Python | 27.636363 | 87 | 0.622716 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/_compat.py | import hashlib
# Compat wrapper to always include the `usedforsecurity=...` parameter,
# which is only added from Python 3.9 onwards.
# We use this flag to indicate that we use `md5` hashes only for non-security
# cases (our ETag checksums).
# If we don't indicate that we're using MD5 for non-security related reasons,
# then attempting to use this function will raise an error when used
# environments which enable a strict "FIPs mode".
#
# See issue: https://github.com/encode/starlette/issues/1365
try:
# check if the Python version supports the parameter
# using usedforsecurity=False to avoid an exception on FIPS systems
# that reject usedforsecurity=True
hashlib.md5(b"data", usedforsecurity=False) # type: ignore[call-arg]
def md5_hexdigest(
data: bytes, *, usedforsecurity: bool = True
) -> str: # pragma: no cover
return hashlib.md5( # type: ignore[call-arg]
data, usedforsecurity=usedforsecurity
).hexdigest()
except TypeError: # pragma: no cover
def md5_hexdigest(data: bytes, *, usedforsecurity: bool = True) -> str:
return hashlib.md5(data).hexdigest()
| 1,149 | Python | 37.333332 | 77 | 0.706701 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/templating.py | import typing
from os import PathLike
from starlette.background import BackgroundTask
from starlette.requests import Request
from starlette.responses import Response
from starlette.types import Receive, Scope, Send
try:
import jinja2
# @contextfunction was renamed to @pass_context in Jinja 3.0, and was removed in 3.1
# hence we try to get pass_context (most installs will be >=3.1)
# and fall back to contextfunction,
# adding a type ignore for mypy to let us access an attribute that may not exist
if hasattr(jinja2, "pass_context"):
pass_context = jinja2.pass_context
else: # pragma: nocover
pass_context = jinja2.contextfunction # type: ignore[attr-defined]
except ImportError: # pragma: nocover
jinja2 = None # type: ignore[assignment]
class _TemplateResponse(Response):
media_type = "text/html"
def __init__(
self,
template: typing.Any,
context: dict,
status_code: int = 200,
headers: typing.Optional[typing.Mapping[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
):
self.template = template
self.context = context
content = template.render(context)
super().__init__(content, status_code, headers, media_type, background)
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
request = self.context.get("request", {})
extensions = request.get("extensions", {})
if "http.response.debug" in extensions:
await send(
{
"type": "http.response.debug",
"info": {
"template": self.template,
"context": self.context,
},
}
)
await super().__call__(scope, receive, send)
class Jinja2Templates:
"""
templates = Jinja2Templates("templates")
return templates.TemplateResponse("index.html", {"request": request})
"""
def __init__(
self,
directory: typing.Union[str, PathLike],
context_processors: typing.Optional[
typing.List[typing.Callable[[Request], typing.Dict[str, typing.Any]]]
] = None,
**env_options: typing.Any
) -> None:
assert jinja2 is not None, "jinja2 must be installed to use Jinja2Templates"
self.env = self._create_env(directory, **env_options)
self.context_processors = context_processors or []
def _create_env(
self, directory: typing.Union[str, PathLike], **env_options: typing.Any
) -> "jinja2.Environment":
@pass_context
def url_for(context: dict, name: str, **path_params: typing.Any) -> str:
request = context["request"]
return request.url_for(name, **path_params)
loader = jinja2.FileSystemLoader(directory)
env_options.setdefault("loader", loader)
env_options.setdefault("autoescape", True)
env = jinja2.Environment(**env_options)
env.globals["url_for"] = url_for
return env
def get_template(self, name: str) -> "jinja2.Template":
return self.env.get_template(name)
def TemplateResponse(
self,
name: str,
context: dict,
status_code: int = 200,
headers: typing.Optional[typing.Mapping[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
) -> _TemplateResponse:
if "request" not in context:
raise ValueError('context must include a "request" key')
request = typing.cast(Request, context["request"])
for context_processor in self.context_processors:
context.update(context_processor(request))
template = self.get_template(name)
return _TemplateResponse(
template,
context,
status_code=status_code,
headers=headers,
media_type=media_type,
background=background,
)
| 4,120 | Python | 33.341666 | 88 | 0.606311 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/__init__.py | __version__ = "0.25.0"
| 23 | Python | 10.999995 | 22 | 0.478261 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/websockets.py | import enum
import json
import typing
from starlette.requests import HTTPConnection
from starlette.types import Message, Receive, Scope, Send
class WebSocketState(enum.Enum):
CONNECTING = 0
CONNECTED = 1
DISCONNECTED = 2
class WebSocketDisconnect(Exception):
def __init__(self, code: int = 1000, reason: typing.Optional[str] = None) -> None:
self.code = code
self.reason = reason or ""
class WebSocket(HTTPConnection):
def __init__(self, scope: Scope, receive: Receive, send: Send) -> None:
super().__init__(scope)
assert scope["type"] == "websocket"
self._receive = receive
self._send = send
self.client_state = WebSocketState.CONNECTING
self.application_state = WebSocketState.CONNECTING
async def receive(self) -> Message:
"""
Receive ASGI websocket messages, ensuring valid state transitions.
"""
if self.client_state == WebSocketState.CONNECTING:
message = await self._receive()
message_type = message["type"]
if message_type != "websocket.connect":
raise RuntimeError(
'Expected ASGI message "websocket.connect", '
f"but got {message_type!r}"
)
self.client_state = WebSocketState.CONNECTED
return message
elif self.client_state == WebSocketState.CONNECTED:
message = await self._receive()
message_type = message["type"]
if message_type not in {"websocket.receive", "websocket.disconnect"}:
raise RuntimeError(
'Expected ASGI message "websocket.receive" or '
f'"websocket.disconnect", but got {message_type!r}'
)
if message_type == "websocket.disconnect":
self.client_state = WebSocketState.DISCONNECTED
return message
else:
raise RuntimeError(
'Cannot call "receive" once a disconnect message has been received.'
)
async def send(self, message: Message) -> None:
"""
Send ASGI websocket messages, ensuring valid state transitions.
"""
if self.application_state == WebSocketState.CONNECTING:
message_type = message["type"]
if message_type not in {"websocket.accept", "websocket.close"}:
raise RuntimeError(
'Expected ASGI message "websocket.connect", '
f"but got {message_type!r}"
)
if message_type == "websocket.close":
self.application_state = WebSocketState.DISCONNECTED
else:
self.application_state = WebSocketState.CONNECTED
await self._send(message)
elif self.application_state == WebSocketState.CONNECTED:
message_type = message["type"]
if message_type not in {"websocket.send", "websocket.close"}:
raise RuntimeError(
'Expected ASGI message "websocket.send" or "websocket.close", '
f"but got {message_type!r}"
)
if message_type == "websocket.close":
self.application_state = WebSocketState.DISCONNECTED
await self._send(message)
else:
raise RuntimeError('Cannot call "send" once a close message has been sent.')
async def accept(
self,
subprotocol: typing.Optional[str] = None,
headers: typing.Optional[typing.Iterable[typing.Tuple[bytes, bytes]]] = None,
) -> None:
headers = headers or []
if self.client_state == WebSocketState.CONNECTING:
# If we haven't yet seen the 'connect' message, then wait for it first.
await self.receive()
await self.send(
{"type": "websocket.accept", "subprotocol": subprotocol, "headers": headers}
)
def _raise_on_disconnect(self, message: Message) -> None:
if message["type"] == "websocket.disconnect":
raise WebSocketDisconnect(message["code"])
async def receive_text(self) -> str:
if self.application_state != WebSocketState.CONNECTED:
raise RuntimeError(
'WebSocket is not connected. Need to call "accept" first.'
)
message = await self.receive()
self._raise_on_disconnect(message)
return message["text"]
async def receive_bytes(self) -> bytes:
if self.application_state != WebSocketState.CONNECTED:
raise RuntimeError(
'WebSocket is not connected. Need to call "accept" first.'
)
message = await self.receive()
self._raise_on_disconnect(message)
return message["bytes"]
async def receive_json(self, mode: str = "text") -> typing.Any:
if mode not in {"text", "binary"}:
raise RuntimeError('The "mode" argument should be "text" or "binary".')
if self.application_state != WebSocketState.CONNECTED:
raise RuntimeError(
'WebSocket is not connected. Need to call "accept" first.'
)
message = await self.receive()
self._raise_on_disconnect(message)
if mode == "text":
text = message["text"]
else:
text = message["bytes"].decode("utf-8")
return json.loads(text)
async def iter_text(self) -> typing.AsyncIterator[str]:
try:
while True:
yield await self.receive_text()
except WebSocketDisconnect:
pass
async def iter_bytes(self) -> typing.AsyncIterator[bytes]:
try:
while True:
yield await self.receive_bytes()
except WebSocketDisconnect:
pass
async def iter_json(self) -> typing.AsyncIterator[typing.Any]:
try:
while True:
yield await self.receive_json()
except WebSocketDisconnect:
pass
async def send_text(self, data: str) -> None:
await self.send({"type": "websocket.send", "text": data})
async def send_bytes(self, data: bytes) -> None:
await self.send({"type": "websocket.send", "bytes": data})
async def send_json(self, data: typing.Any, mode: str = "text") -> None:
if mode not in {"text", "binary"}:
raise RuntimeError('The "mode" argument should be "text" or "binary".')
text = json.dumps(data)
if mode == "text":
await self.send({"type": "websocket.send", "text": text})
else:
await self.send({"type": "websocket.send", "bytes": text.encode("utf-8")})
async def close(
self, code: int = 1000, reason: typing.Optional[str] = None
) -> None:
await self.send(
{"type": "websocket.close", "code": code, "reason": reason or ""}
)
class WebSocketClose:
def __init__(self, code: int = 1000, reason: typing.Optional[str] = None) -> None:
self.code = code
self.reason = reason or ""
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
await send(
{"type": "websocket.close", "code": self.code, "reason": self.reason}
)
| 7,317 | Python | 36.721649 | 88 | 0.574962 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/authentication.py | import functools
import inspect
import typing
from urllib.parse import urlencode
from starlette._utils import is_async_callable
from starlette.exceptions import HTTPException
from starlette.requests import HTTPConnection, Request
from starlette.responses import RedirectResponse, Response
from starlette.websockets import WebSocket
_CallableType = typing.TypeVar("_CallableType", bound=typing.Callable)
def has_required_scope(conn: HTTPConnection, scopes: typing.Sequence[str]) -> bool:
for scope in scopes:
if scope not in conn.auth.scopes:
return False
return True
def requires(
scopes: typing.Union[str, typing.Sequence[str]],
status_code: int = 403,
redirect: typing.Optional[str] = None,
) -> typing.Callable[[_CallableType], _CallableType]:
scopes_list = [scopes] if isinstance(scopes, str) else list(scopes)
def decorator(func: typing.Callable) -> typing.Callable:
sig = inspect.signature(func)
for idx, parameter in enumerate(sig.parameters.values()):
if parameter.name == "request" or parameter.name == "websocket":
type_ = parameter.name
break
else:
raise Exception(
f'No "request" or "websocket" argument on function "{func}"'
)
if type_ == "websocket":
# Handle websocket functions. (Always async)
@functools.wraps(func)
async def websocket_wrapper(
*args: typing.Any, **kwargs: typing.Any
) -> None:
websocket = kwargs.get(
"websocket", args[idx] if idx < len(args) else None
)
assert isinstance(websocket, WebSocket)
if not has_required_scope(websocket, scopes_list):
await websocket.close()
else:
await func(*args, **kwargs)
return websocket_wrapper
elif is_async_callable(func):
# Handle async request/response functions.
@functools.wraps(func)
async def async_wrapper(
*args: typing.Any, **kwargs: typing.Any
) -> Response:
request = kwargs.get("request", args[idx] if idx < len(args) else None)
assert isinstance(request, Request)
if not has_required_scope(request, scopes_list):
if redirect is not None:
orig_request_qparam = urlencode({"next": str(request.url)})
next_url = "{redirect_path}?{orig_request}".format(
redirect_path=request.url_for(redirect),
orig_request=orig_request_qparam,
)
return RedirectResponse(url=next_url, status_code=303)
raise HTTPException(status_code=status_code)
return await func(*args, **kwargs)
return async_wrapper
else:
# Handle sync request/response functions.
@functools.wraps(func)
def sync_wrapper(*args: typing.Any, **kwargs: typing.Any) -> Response:
request = kwargs.get("request", args[idx] if idx < len(args) else None)
assert isinstance(request, Request)
if not has_required_scope(request, scopes_list):
if redirect is not None:
orig_request_qparam = urlencode({"next": str(request.url)})
next_url = "{redirect_path}?{orig_request}".format(
redirect_path=request.url_for(redirect),
orig_request=orig_request_qparam,
)
return RedirectResponse(url=next_url, status_code=303)
raise HTTPException(status_code=status_code)
return func(*args, **kwargs)
return sync_wrapper
return decorator # type: ignore[return-value]
class AuthenticationError(Exception):
pass
class AuthenticationBackend:
async def authenticate(
self, conn: HTTPConnection
) -> typing.Optional[typing.Tuple["AuthCredentials", "BaseUser"]]:
raise NotImplementedError() # pragma: no cover
class AuthCredentials:
def __init__(self, scopes: typing.Optional[typing.Sequence[str]] = None):
self.scopes = [] if scopes is None else list(scopes)
class BaseUser:
@property
def is_authenticated(self) -> bool:
raise NotImplementedError() # pragma: no cover
@property
def display_name(self) -> str:
raise NotImplementedError() # pragma: no cover
@property
def identity(self) -> str:
raise NotImplementedError() # pragma: no cover
class SimpleUser(BaseUser):
def __init__(self, username: str) -> None:
self.username = username
@property
def is_authenticated(self) -> bool:
return True
@property
def display_name(self) -> str:
return self.username
class UnauthenticatedUser(BaseUser):
@property
def is_authenticated(self) -> bool:
return False
@property
def display_name(self) -> str:
return ""
| 5,246 | Python | 33.071428 | 87 | 0.585208 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/formparsers.py | import typing
from dataclasses import dataclass, field
from enum import Enum
from tempfile import SpooledTemporaryFile
from urllib.parse import unquote_plus
from starlette.datastructures import FormData, Headers, UploadFile
try:
import multipart
from multipart.multipart import parse_options_header
except ImportError: # pragma: nocover
parse_options_header = None
multipart = None
class FormMessage(Enum):
FIELD_START = 1
FIELD_NAME = 2
FIELD_DATA = 3
FIELD_END = 4
END = 5
@dataclass
class MultipartPart:
content_disposition: typing.Optional[bytes] = None
field_name: str = ""
data: bytes = b""
file: typing.Optional[UploadFile] = None
item_headers: typing.List[typing.Tuple[bytes, bytes]] = field(default_factory=list)
def _user_safe_decode(src: bytes, codec: str) -> str:
try:
return src.decode(codec)
except (UnicodeDecodeError, LookupError):
return src.decode("latin-1")
class MultiPartException(Exception):
def __init__(self, message: str) -> None:
self.message = message
class FormParser:
def __init__(
self, headers: Headers, stream: typing.AsyncGenerator[bytes, None]
) -> None:
assert (
multipart is not None
), "The `python-multipart` library must be installed to use form parsing."
self.headers = headers
self.stream = stream
self.messages: typing.List[typing.Tuple[FormMessage, bytes]] = []
def on_field_start(self) -> None:
message = (FormMessage.FIELD_START, b"")
self.messages.append(message)
def on_field_name(self, data: bytes, start: int, end: int) -> None:
message = (FormMessage.FIELD_NAME, data[start:end])
self.messages.append(message)
def on_field_data(self, data: bytes, start: int, end: int) -> None:
message = (FormMessage.FIELD_DATA, data[start:end])
self.messages.append(message)
def on_field_end(self) -> None:
message = (FormMessage.FIELD_END, b"")
self.messages.append(message)
def on_end(self) -> None:
message = (FormMessage.END, b"")
self.messages.append(message)
async def parse(self) -> FormData:
# Callbacks dictionary.
callbacks = {
"on_field_start": self.on_field_start,
"on_field_name": self.on_field_name,
"on_field_data": self.on_field_data,
"on_field_end": self.on_field_end,
"on_end": self.on_end,
}
# Create the parser.
parser = multipart.QuerystringParser(callbacks)
field_name = b""
field_value = b""
items: typing.List[typing.Tuple[str, typing.Union[str, UploadFile]]] = []
# Feed the parser with data from the request.
async for chunk in self.stream:
if chunk:
parser.write(chunk)
else:
parser.finalize()
messages = list(self.messages)
self.messages.clear()
for message_type, message_bytes in messages:
if message_type == FormMessage.FIELD_START:
field_name = b""
field_value = b""
elif message_type == FormMessage.FIELD_NAME:
field_name += message_bytes
elif message_type == FormMessage.FIELD_DATA:
field_value += message_bytes
elif message_type == FormMessage.FIELD_END:
name = unquote_plus(field_name.decode("latin-1"))
value = unquote_plus(field_value.decode("latin-1"))
items.append((name, value))
return FormData(items)
class MultiPartParser:
max_file_size = 1024 * 1024
def __init__(
self,
headers: Headers,
stream: typing.AsyncGenerator[bytes, None],
*,
max_files: typing.Union[int, float] = 1000,
max_fields: typing.Union[int, float] = 1000,
) -> None:
assert (
multipart is not None
), "The `python-multipart` library must be installed to use form parsing."
self.headers = headers
self.stream = stream
self.max_files = max_files
self.max_fields = max_fields
self.items: typing.List[typing.Tuple[str, typing.Union[str, UploadFile]]] = []
self._current_files = 0
self._current_fields = 0
self._current_partial_header_name: bytes = b""
self._current_partial_header_value: bytes = b""
self._current_part = MultipartPart()
self._charset = ""
self._file_parts_to_write: typing.List[typing.Tuple[MultipartPart, bytes]] = []
self._file_parts_to_finish: typing.List[MultipartPart] = []
self._files_to_close_on_error: typing.List[SpooledTemporaryFile] = []
def on_part_begin(self) -> None:
self._current_part = MultipartPart()
def on_part_data(self, data: bytes, start: int, end: int) -> None:
message_bytes = data[start:end]
if self._current_part.file is None:
self._current_part.data += message_bytes
else:
self._file_parts_to_write.append((self._current_part, message_bytes))
def on_part_end(self) -> None:
if self._current_part.file is None:
self.items.append(
(
self._current_part.field_name,
_user_safe_decode(self._current_part.data, self._charset),
)
)
else:
self._file_parts_to_finish.append(self._current_part)
# The file can be added to the items right now even though it's not
# finished yet, because it will be finished in the `parse()` method, before
# self.items is used in the return value.
self.items.append((self._current_part.field_name, self._current_part.file))
def on_header_field(self, data: bytes, start: int, end: int) -> None:
self._current_partial_header_name += data[start:end]
def on_header_value(self, data: bytes, start: int, end: int) -> None:
self._current_partial_header_value += data[start:end]
def on_header_end(self) -> None:
field = self._current_partial_header_name.lower()
if field == b"content-disposition":
self._current_part.content_disposition = self._current_partial_header_value
self._current_part.item_headers.append(
(field, self._current_partial_header_value)
)
self._current_partial_header_name = b""
self._current_partial_header_value = b""
def on_headers_finished(self) -> None:
disposition, options = parse_options_header(
self._current_part.content_disposition
)
try:
self._current_part.field_name = _user_safe_decode(
options[b"name"], self._charset
)
except KeyError:
raise MultiPartException(
'The Content-Disposition header field "name" must be ' "provided."
)
if b"filename" in options:
self._current_files += 1
if self._current_files > self.max_files:
raise MultiPartException(
f"Too many files. Maximum number of files is {self.max_files}."
)
filename = _user_safe_decode(options[b"filename"], self._charset)
tempfile = SpooledTemporaryFile(max_size=self.max_file_size)
self._files_to_close_on_error.append(tempfile)
self._current_part.file = UploadFile(
file=tempfile, # type: ignore[arg-type]
size=0,
filename=filename,
headers=Headers(raw=self._current_part.item_headers),
)
else:
self._current_fields += 1
if self._current_fields > self.max_fields:
raise MultiPartException(
f"Too many fields. Maximum number of fields is {self.max_fields}."
)
self._current_part.file = None
def on_end(self) -> None:
pass
async def parse(self) -> FormData:
# Parse the Content-Type header to get the multipart boundary.
_, params = parse_options_header(self.headers["Content-Type"])
charset = params.get(b"charset", "utf-8")
if type(charset) == bytes:
charset = charset.decode("latin-1")
self._charset = charset
try:
boundary = params[b"boundary"]
except KeyError:
raise MultiPartException("Missing boundary in multipart.")
# Callbacks dictionary.
callbacks = {
"on_part_begin": self.on_part_begin,
"on_part_data": self.on_part_data,
"on_part_end": self.on_part_end,
"on_header_field": self.on_header_field,
"on_header_value": self.on_header_value,
"on_header_end": self.on_header_end,
"on_headers_finished": self.on_headers_finished,
"on_end": self.on_end,
}
# Create the parser.
parser = multipart.MultipartParser(boundary, callbacks)
try:
# Feed the parser with data from the request.
async for chunk in self.stream:
parser.write(chunk)
# Write file data, it needs to use await with the UploadFile methods
# that call the corresponding file methods *in a threadpool*,
# otherwise, if they were called directly in the callback methods above
# (regular, non-async functions), that would block the event loop in
# the main thread.
for part, data in self._file_parts_to_write:
assert part.file # for type checkers
await part.file.write(data)
for part in self._file_parts_to_finish:
assert part.file # for type checkers
await part.file.seek(0)
self._file_parts_to_write.clear()
self._file_parts_to_finish.clear()
except MultiPartException as exc:
# Close all the files if there was an error.
for file in self._files_to_close_on_error:
file.close()
raise exc
parser.finalize()
return FormData(self.items)
| 10,415 | Python | 36.602888 | 87 | 0.579741 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/testclient.py | import contextlib
import inspect
import io
import json
import math
import queue
import sys
import typing
import warnings
from concurrent.futures import Future
from types import GeneratorType
from urllib.parse import unquote, urljoin
import anyio
import anyio.from_thread
import httpx
from anyio.streams.stapled import StapledObjectStream
from starlette._utils import is_async_callable
from starlette.types import ASGIApp, Message, Receive, Scope, Send
from starlette.websockets import WebSocketDisconnect
if sys.version_info >= (3, 8): # pragma: no cover
from typing import TypedDict
else: # pragma: no cover
from typing_extensions import TypedDict
_PortalFactoryType = typing.Callable[
[], typing.ContextManager[anyio.abc.BlockingPortal]
]
ASGIInstance = typing.Callable[[Receive, Send], typing.Awaitable[None]]
ASGI2App = typing.Callable[[Scope], ASGIInstance]
ASGI3App = typing.Callable[[Scope, Receive, Send], typing.Awaitable[None]]
_RequestData = typing.Mapping[str, typing.Union[str, typing.Iterable[str]]]
def _is_asgi3(app: typing.Union[ASGI2App, ASGI3App]) -> bool:
if inspect.isclass(app):
return hasattr(app, "__await__")
return is_async_callable(app)
class _WrapASGI2:
"""
Provide an ASGI3 interface onto an ASGI2 app.
"""
def __init__(self, app: ASGI2App) -> None:
self.app = app
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
instance = self.app(scope)
await instance(receive, send)
class _AsyncBackend(TypedDict):
backend: str
backend_options: typing.Dict[str, typing.Any]
class _Upgrade(Exception):
def __init__(self, session: "WebSocketTestSession") -> None:
self.session = session
class WebSocketTestSession:
def __init__(
self,
app: ASGI3App,
scope: Scope,
portal_factory: _PortalFactoryType,
) -> None:
self.app = app
self.scope = scope
self.accepted_subprotocol = None
self.portal_factory = portal_factory
self._receive_queue: "queue.Queue[typing.Any]" = queue.Queue()
self._send_queue: "queue.Queue[typing.Any]" = queue.Queue()
self.extra_headers = None
def __enter__(self) -> "WebSocketTestSession":
self.exit_stack = contextlib.ExitStack()
self.portal = self.exit_stack.enter_context(self.portal_factory())
try:
_: "Future[None]" = self.portal.start_task_soon(self._run)
self.send({"type": "websocket.connect"})
message = self.receive()
self._raise_on_close(message)
except Exception:
self.exit_stack.close()
raise
self.accepted_subprotocol = message.get("subprotocol", None)
self.extra_headers = message.get("headers", None)
return self
def __exit__(self, *args: typing.Any) -> None:
try:
self.close(1000)
finally:
self.exit_stack.close()
while not self._send_queue.empty():
message = self._send_queue.get()
if isinstance(message, BaseException):
raise message
async def _run(self) -> None:
"""
The sub-thread in which the websocket session runs.
"""
scope = self.scope
receive = self._asgi_receive
send = self._asgi_send
try:
await self.app(scope, receive, send)
except BaseException as exc:
self._send_queue.put(exc)
raise
async def _asgi_receive(self) -> Message:
while self._receive_queue.empty():
await anyio.sleep(0)
return self._receive_queue.get()
async def _asgi_send(self, message: Message) -> None:
self._send_queue.put(message)
def _raise_on_close(self, message: Message) -> None:
if message["type"] == "websocket.close":
raise WebSocketDisconnect(
message.get("code", 1000), message.get("reason", "")
)
def send(self, message: Message) -> None:
self._receive_queue.put(message)
def send_text(self, data: str) -> None:
self.send({"type": "websocket.receive", "text": data})
def send_bytes(self, data: bytes) -> None:
self.send({"type": "websocket.receive", "bytes": data})
def send_json(self, data: typing.Any, mode: str = "text") -> None:
assert mode in ["text", "binary"]
text = json.dumps(data)
if mode == "text":
self.send({"type": "websocket.receive", "text": text})
else:
self.send({"type": "websocket.receive", "bytes": text.encode("utf-8")})
def close(self, code: int = 1000) -> None:
self.send({"type": "websocket.disconnect", "code": code})
def receive(self) -> Message:
message = self._send_queue.get()
if isinstance(message, BaseException):
raise message
return message
def receive_text(self) -> str:
message = self.receive()
self._raise_on_close(message)
return message["text"]
def receive_bytes(self) -> bytes:
message = self.receive()
self._raise_on_close(message)
return message["bytes"]
def receive_json(self, mode: str = "text") -> typing.Any:
assert mode in ["text", "binary"]
message = self.receive()
self._raise_on_close(message)
if mode == "text":
text = message["text"]
else:
text = message["bytes"].decode("utf-8")
return json.loads(text)
class _TestClientTransport(httpx.BaseTransport):
def __init__(
self,
app: ASGI3App,
portal_factory: _PortalFactoryType,
raise_server_exceptions: bool = True,
root_path: str = "",
) -> None:
self.app = app
self.raise_server_exceptions = raise_server_exceptions
self.root_path = root_path
self.portal_factory = portal_factory
def handle_request(self, request: httpx.Request) -> httpx.Response:
scheme = request.url.scheme
netloc = request.url.netloc.decode(encoding="ascii")
path = request.url.path
raw_path = request.url.raw_path
query = request.url.query.decode(encoding="ascii")
default_port = {"http": 80, "ws": 80, "https": 443, "wss": 443}[scheme]
if ":" in netloc:
host, port_string = netloc.split(":", 1)
port = int(port_string)
else:
host = netloc
port = default_port
# Include the 'host' header.
if "host" in request.headers:
headers: typing.List[typing.Tuple[bytes, bytes]] = []
elif port == default_port: # pragma: no cover
headers = [(b"host", host.encode())]
else: # pragma: no cover
headers = [(b"host", (f"{host}:{port}").encode())]
# Include other request headers.
headers += [
(key.lower().encode(), value.encode())
for key, value in request.headers.items()
]
scope: typing.Dict[str, typing.Any]
if scheme in {"ws", "wss"}:
subprotocol = request.headers.get("sec-websocket-protocol", None)
if subprotocol is None:
subprotocols: typing.Sequence[str] = []
else:
subprotocols = [value.strip() for value in subprotocol.split(",")]
scope = {
"type": "websocket",
"path": unquote(path),
"raw_path": raw_path,
"root_path": self.root_path,
"scheme": scheme,
"query_string": query.encode(),
"headers": headers,
"client": ["testclient", 50000],
"server": [host, port],
"subprotocols": subprotocols,
}
session = WebSocketTestSession(self.app, scope, self.portal_factory)
raise _Upgrade(session)
scope = {
"type": "http",
"http_version": "1.1",
"method": request.method,
"path": unquote(path),
"raw_path": raw_path,
"root_path": self.root_path,
"scheme": scheme,
"query_string": query.encode(),
"headers": headers,
"client": ["testclient", 50000],
"server": [host, port],
"extensions": {"http.response.debug": {}},
}
request_complete = False
response_started = False
response_complete: anyio.Event
raw_kwargs: typing.Dict[str, typing.Any] = {"stream": io.BytesIO()}
template = None
context = None
async def receive() -> Message:
nonlocal request_complete
if request_complete:
if not response_complete.is_set():
await response_complete.wait()
return {"type": "http.disconnect"}
body = request.read()
if isinstance(body, str):
body_bytes: bytes = body.encode("utf-8") # pragma: no cover
elif body is None:
body_bytes = b"" # pragma: no cover
elif isinstance(body, GeneratorType):
try: # pragma: no cover
chunk = body.send(None)
if isinstance(chunk, str):
chunk = chunk.encode("utf-8")
return {"type": "http.request", "body": chunk, "more_body": True}
except StopIteration: # pragma: no cover
request_complete = True
return {"type": "http.request", "body": b""}
else:
body_bytes = body
request_complete = True
return {"type": "http.request", "body": body_bytes}
async def send(message: Message) -> None:
nonlocal raw_kwargs, response_started, template, context
if message["type"] == "http.response.start":
assert (
not response_started
), 'Received multiple "http.response.start" messages.'
raw_kwargs["status_code"] = message["status"]
raw_kwargs["headers"] = [
(key.decode(), value.decode())
for key, value in message.get("headers", [])
]
response_started = True
elif message["type"] == "http.response.body":
assert (
response_started
), 'Received "http.response.body" without "http.response.start".'
assert (
not response_complete.is_set()
), 'Received "http.response.body" after response completed.'
body = message.get("body", b"")
more_body = message.get("more_body", False)
if request.method != "HEAD":
raw_kwargs["stream"].write(body)
if not more_body:
raw_kwargs["stream"].seek(0)
response_complete.set()
elif message["type"] == "http.response.debug":
template = message["info"]["template"]
context = message["info"]["context"]
try:
with self.portal_factory() as portal:
response_complete = portal.call(anyio.Event)
portal.call(self.app, scope, receive, send)
except BaseException as exc:
if self.raise_server_exceptions:
raise exc
if self.raise_server_exceptions:
assert response_started, "TestClient did not receive any response."
elif not response_started:
raw_kwargs = {
"status_code": 500,
"headers": [],
"stream": io.BytesIO(),
}
raw_kwargs["stream"] = httpx.ByteStream(raw_kwargs["stream"].read())
response = httpx.Response(**raw_kwargs, request=request)
if template is not None:
response.template = template # type: ignore[attr-defined]
response.context = context # type: ignore[attr-defined]
return response
class TestClient(httpx.Client):
__test__ = False
task: "Future[None]"
portal: typing.Optional[anyio.abc.BlockingPortal] = None
def __init__(
self,
app: ASGIApp,
base_url: str = "http://testserver",
raise_server_exceptions: bool = True,
root_path: str = "",
backend: str = "asyncio",
backend_options: typing.Optional[typing.Dict[str, typing.Any]] = None,
cookies: httpx._client.CookieTypes = None,
headers: typing.Dict[str, str] = None,
) -> None:
self.async_backend = _AsyncBackend(
backend=backend, backend_options=backend_options or {}
)
if _is_asgi3(app):
app = typing.cast(ASGI3App, app)
asgi_app = app
else:
app = typing.cast(ASGI2App, app) # type: ignore[assignment]
asgi_app = _WrapASGI2(app) # type: ignore[arg-type]
self.app = asgi_app
transport = _TestClientTransport(
self.app,
portal_factory=self._portal_factory,
raise_server_exceptions=raise_server_exceptions,
root_path=root_path,
)
if headers is None:
headers = {}
headers.setdefault("user-agent", "testclient")
super().__init__(
app=self.app,
base_url=base_url,
headers=headers,
transport=transport,
follow_redirects=True,
cookies=cookies,
)
@contextlib.contextmanager
def _portal_factory(self) -> typing.Generator[anyio.abc.BlockingPortal, None, None]:
if self.portal is not None:
yield self.portal
else:
with anyio.from_thread.start_blocking_portal(
**self.async_backend
) as portal:
yield portal
def _choose_redirect_arg(
self,
follow_redirects: typing.Optional[bool],
allow_redirects: typing.Optional[bool],
) -> typing.Union[bool, httpx._client.UseClientDefault]:
redirect: typing.Union[
bool, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT
if allow_redirects is not None:
message = (
"The `allow_redirects` argument is deprecated. "
"Use `follow_redirects` instead."
)
warnings.warn(message, DeprecationWarning)
redirect = allow_redirects
if follow_redirects is not None:
redirect = follow_redirects
elif allow_redirects is not None and follow_redirects is not None:
raise RuntimeError( # pragma: no cover
"Cannot use both `allow_redirects` and `follow_redirects`."
)
return redirect
def request( # type: ignore[override]
self,
method: str,
url: httpx._types.URLTypes,
*,
content: typing.Optional[httpx._types.RequestContent] = None,
data: typing.Optional[_RequestData] = None,
files: typing.Optional[httpx._types.RequestFiles] = None,
json: typing.Any = None,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
url = self.base_url.join(url)
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().request(
method,
url,
content=content,
data=data, # type: ignore[arg-type]
files=files,
json=json,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def get( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().get(
url,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def options( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().options(
url,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def head( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().head(
url,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def post( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
content: typing.Optional[httpx._types.RequestContent] = None,
data: typing.Optional[_RequestData] = None,
files: typing.Optional[httpx._types.RequestFiles] = None,
json: typing.Any = None,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().post(
url,
content=content,
data=data, # type: ignore[arg-type]
files=files,
json=json,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def put( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
content: typing.Optional[httpx._types.RequestContent] = None,
data: typing.Optional[_RequestData] = None,
files: typing.Optional[httpx._types.RequestFiles] = None,
json: typing.Any = None,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().put(
url,
content=content,
data=data, # type: ignore[arg-type]
files=files,
json=json,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def patch( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
content: typing.Optional[httpx._types.RequestContent] = None,
data: typing.Optional[_RequestData] = None,
files: typing.Optional[httpx._types.RequestFiles] = None,
json: typing.Any = None,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().patch(
url,
content=content,
data=data, # type: ignore[arg-type]
files=files,
json=json,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def delete( # type: ignore[override]
self,
url: httpx._types.URLTypes,
*,
params: typing.Optional[httpx._types.QueryParamTypes] = None,
headers: typing.Optional[httpx._types.HeaderTypes] = None,
cookies: typing.Optional[httpx._types.CookieTypes] = None,
auth: typing.Union[
httpx._types.AuthTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
follow_redirects: typing.Optional[bool] = None,
allow_redirects: typing.Optional[bool] = None,
timeout: typing.Union[
httpx._client.TimeoutTypes, httpx._client.UseClientDefault
] = httpx._client.USE_CLIENT_DEFAULT,
extensions: typing.Optional[typing.Dict[str, typing.Any]] = None,
) -> httpx.Response:
redirect = self._choose_redirect_arg(follow_redirects, allow_redirects)
return super().delete(
url,
params=params,
headers=headers,
cookies=cookies,
auth=auth,
follow_redirects=redirect,
timeout=timeout,
extensions=extensions,
)
def websocket_connect(
self, url: str, subprotocols: typing.Sequence[str] = None, **kwargs: typing.Any
) -> typing.Any:
url = urljoin("ws://testserver", url)
headers = kwargs.get("headers", {})
headers.setdefault("connection", "upgrade")
headers.setdefault("sec-websocket-key", "testserver==")
headers.setdefault("sec-websocket-version", "13")
if subprotocols is not None:
headers.setdefault("sec-websocket-protocol", ", ".join(subprotocols))
kwargs["headers"] = headers
try:
super().request("GET", url, **kwargs)
except _Upgrade as exc:
session = exc.session
else:
raise RuntimeError("Expected WebSocket upgrade") # pragma: no cover
return session
def __enter__(self) -> "TestClient":
with contextlib.ExitStack() as stack:
self.portal = portal = stack.enter_context(
anyio.from_thread.start_blocking_portal(**self.async_backend)
)
@stack.callback
def reset_portal() -> None:
self.portal = None
self.stream_send = StapledObjectStream(
*anyio.create_memory_object_stream(math.inf)
)
self.stream_receive = StapledObjectStream(
*anyio.create_memory_object_stream(math.inf)
)
self.task = portal.start_task_soon(self.lifespan)
portal.call(self.wait_startup)
@stack.callback
def wait_shutdown() -> None:
portal.call(self.wait_shutdown)
self.exit_stack = stack.pop_all()
return self
def __exit__(self, *args: typing.Any) -> None:
self.exit_stack.close()
async def lifespan(self) -> None:
scope = {"type": "lifespan"}
try:
await self.app(scope, self.stream_receive.receive, self.stream_send.send)
finally:
await self.stream_send.send(None)
async def wait_startup(self) -> None:
await self.stream_receive.send({"type": "lifespan.startup"})
async def receive() -> typing.Any:
message = await self.stream_send.receive()
if message is None:
self.task.result()
return message
message = await receive()
assert message["type"] in (
"lifespan.startup.complete",
"lifespan.startup.failed",
)
if message["type"] == "lifespan.startup.failed":
await receive()
async def wait_shutdown(self) -> None:
async def receive() -> typing.Any:
message = await self.stream_send.receive()
if message is None:
self.task.result()
return message
async with self.stream_send:
await self.stream_receive.send({"type": "lifespan.shutdown"})
message = await receive()
assert message["type"] in (
"lifespan.shutdown.complete",
"lifespan.shutdown.failed",
)
if message["type"] == "lifespan.shutdown.failed":
await receive()
| 28,877 | Python | 35.508217 | 88 | 0.570939 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/concurrency.py | import functools
import sys
import typing
import warnings
import anyio
if sys.version_info >= (3, 10): # pragma: no cover
from typing import ParamSpec
else: # pragma: no cover
from typing_extensions import ParamSpec
T = typing.TypeVar("T")
P = ParamSpec("P")
async def run_until_first_complete(*args: typing.Tuple[typing.Callable, dict]) -> None:
warnings.warn(
"run_until_first_complete is deprecated "
"and will be removed in a future version.",
DeprecationWarning,
)
async with anyio.create_task_group() as task_group:
async def run(func: typing.Callable[[], typing.Coroutine]) -> None:
await func()
task_group.cancel_scope.cancel()
for func, kwargs in args:
task_group.start_soon(run, functools.partial(func, **kwargs))
async def run_in_threadpool(
func: typing.Callable[P, T], *args: P.args, **kwargs: P.kwargs
) -> T:
if kwargs: # pragma: no cover
# run_sync doesn't accept 'kwargs', so bind them in here
func = functools.partial(func, **kwargs)
return await anyio.to_thread.run_sync(func, *args)
class _StopIteration(Exception):
pass
def _next(iterator: typing.Iterator[T]) -> T:
# We can't raise `StopIteration` from within the threadpool iterator
# and catch it outside that context, so we coerce them into a different
# exception type.
try:
return next(iterator)
except StopIteration:
raise _StopIteration
async def iterate_in_threadpool(
iterator: typing.Iterator[T],
) -> typing.AsyncIterator[T]:
while True:
try:
yield await anyio.to_thread.run_sync(_next, iterator)
except _StopIteration:
break
| 1,741 | Python | 25.393939 | 87 | 0.651924 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/routing.py | import contextlib
import functools
import inspect
import re
import traceback
import types
import typing
import warnings
from contextlib import asynccontextmanager
from enum import Enum
from starlette._utils import is_async_callable
from starlette.concurrency import run_in_threadpool
from starlette.convertors import CONVERTOR_TYPES, Convertor
from starlette.datastructures import URL, Headers, URLPath
from starlette.exceptions import HTTPException
from starlette.middleware import Middleware
from starlette.requests import Request
from starlette.responses import PlainTextResponse, RedirectResponse
from starlette.types import ASGIApp, Receive, Scope, Send
from starlette.websockets import WebSocket, WebSocketClose
class NoMatchFound(Exception):
"""
Raised by `.url_for(name, **path_params)` and `.url_path_for(name, **path_params)`
if no matching route exists.
"""
def __init__(self, name: str, path_params: typing.Dict[str, typing.Any]) -> None:
params = ", ".join(list(path_params.keys()))
super().__init__(f'No route exists for name "{name}" and params "{params}".')
class Match(Enum):
NONE = 0
PARTIAL = 1
FULL = 2
def iscoroutinefunction_or_partial(obj: typing.Any) -> bool: # pragma: no cover
"""
Correctly determines if an object is a coroutine function,
including those wrapped in functools.partial objects.
"""
warnings.warn(
"iscoroutinefunction_or_partial is deprecated, "
"and will be removed in a future release.",
DeprecationWarning,
)
while isinstance(obj, functools.partial):
obj = obj.func
return inspect.iscoroutinefunction(obj)
def request_response(func: typing.Callable) -> ASGIApp:
"""
Takes a function or coroutine `func(request) -> response`,
and returns an ASGI application.
"""
is_coroutine = is_async_callable(func)
async def app(scope: Scope, receive: Receive, send: Send) -> None:
request = Request(scope, receive=receive, send=send)
if is_coroutine:
response = await func(request)
else:
response = await run_in_threadpool(func, request)
await response(scope, receive, send)
return app
def websocket_session(func: typing.Callable) -> ASGIApp:
"""
Takes a coroutine `func(session)`, and returns an ASGI application.
"""
# assert asyncio.iscoroutinefunction(func), "WebSocket endpoints must be async"
async def app(scope: Scope, receive: Receive, send: Send) -> None:
session = WebSocket(scope, receive=receive, send=send)
await func(session)
return app
def get_name(endpoint: typing.Callable) -> str:
if inspect.isroutine(endpoint) or inspect.isclass(endpoint):
return endpoint.__name__
return endpoint.__class__.__name__
def replace_params(
path: str,
param_convertors: typing.Dict[str, Convertor],
path_params: typing.Dict[str, str],
) -> typing.Tuple[str, dict]:
for key, value in list(path_params.items()):
if "{" + key + "}" in path:
convertor = param_convertors[key]
value = convertor.to_string(value)
path = path.replace("{" + key + "}", value)
path_params.pop(key)
return path, path_params
# Match parameters in URL paths, eg. '{param}', and '{param:int}'
PARAM_REGEX = re.compile("{([a-zA-Z_][a-zA-Z0-9_]*)(:[a-zA-Z_][a-zA-Z0-9_]*)?}")
def compile_path(
path: str,
) -> typing.Tuple[typing.Pattern, str, typing.Dict[str, Convertor]]:
"""
Given a path string, like: "/{username:str}",
or a host string, like: "{subdomain}.mydomain.org", return a three-tuple
of (regex, format, {param_name:convertor}).
regex: "/(?P<username>[^/]+)"
format: "/{username}"
convertors: {"username": StringConvertor()}
"""
is_host = not path.startswith("/")
path_regex = "^"
path_format = ""
duplicated_params = set()
idx = 0
param_convertors = {}
for match in PARAM_REGEX.finditer(path):
param_name, convertor_type = match.groups("str")
convertor_type = convertor_type.lstrip(":")
assert (
convertor_type in CONVERTOR_TYPES
), f"Unknown path convertor '{convertor_type}'"
convertor = CONVERTOR_TYPES[convertor_type]
path_regex += re.escape(path[idx : match.start()])
path_regex += f"(?P<{param_name}>{convertor.regex})"
path_format += path[idx : match.start()]
path_format += "{%s}" % param_name
if param_name in param_convertors:
duplicated_params.add(param_name)
param_convertors[param_name] = convertor
idx = match.end()
if duplicated_params:
names = ", ".join(sorted(duplicated_params))
ending = "s" if len(duplicated_params) > 1 else ""
raise ValueError(f"Duplicated param name{ending} {names} at path {path}")
if is_host:
# Align with `Host.matches()` behavior, which ignores port.
hostname = path[idx:].split(":")[0]
path_regex += re.escape(hostname) + "$"
else:
path_regex += re.escape(path[idx:]) + "$"
path_format += path[idx:]
return re.compile(path_regex), path_format, param_convertors
class BaseRoute:
def matches(self, scope: Scope) -> typing.Tuple[Match, Scope]:
raise NotImplementedError() # pragma: no cover
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
raise NotImplementedError() # pragma: no cover
async def handle(self, scope: Scope, receive: Receive, send: Send) -> None:
raise NotImplementedError() # pragma: no cover
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
"""
A route may be used in isolation as a stand-alone ASGI app.
This is a somewhat contrived case, as they'll almost always be used
within a Router, but could be useful for some tooling and minimal apps.
"""
match, child_scope = self.matches(scope)
if match == Match.NONE:
if scope["type"] == "http":
response = PlainTextResponse("Not Found", status_code=404)
await response(scope, receive, send)
elif scope["type"] == "websocket":
websocket_close = WebSocketClose()
await websocket_close(scope, receive, send)
return
scope.update(child_scope)
await self.handle(scope, receive, send)
class Route(BaseRoute):
def __init__(
self,
path: str,
endpoint: typing.Callable,
*,
methods: typing.Optional[typing.List[str]] = None,
name: typing.Optional[str] = None,
include_in_schema: bool = True,
) -> None:
assert path.startswith("/"), "Routed paths must start with '/'"
self.path = path
self.endpoint = endpoint
self.name = get_name(endpoint) if name is None else name
self.include_in_schema = include_in_schema
endpoint_handler = endpoint
while isinstance(endpoint_handler, functools.partial):
endpoint_handler = endpoint_handler.func
if inspect.isfunction(endpoint_handler) or inspect.ismethod(endpoint_handler):
# Endpoint is function or method. Treat it as `func(request) -> response`.
self.app = request_response(endpoint)
if methods is None:
methods = ["GET"]
else:
# Endpoint is a class. Treat it as ASGI.
self.app = endpoint
if methods is None:
self.methods = None
else:
self.methods = {method.upper() for method in methods}
if "GET" in self.methods:
self.methods.add("HEAD")
self.path_regex, self.path_format, self.param_convertors = compile_path(path)
def matches(self, scope: Scope) -> typing.Tuple[Match, Scope]:
if scope["type"] == "http":
match = self.path_regex.match(scope["path"])
if match:
matched_params = match.groupdict()
for key, value in matched_params.items():
matched_params[key] = self.param_convertors[key].convert(value)
path_params = dict(scope.get("path_params", {}))
path_params.update(matched_params)
child_scope = {"endpoint": self.endpoint, "path_params": path_params}
if self.methods and scope["method"] not in self.methods:
return Match.PARTIAL, child_scope
else:
return Match.FULL, child_scope
return Match.NONE, {}
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
seen_params = set(path_params.keys())
expected_params = set(self.param_convertors.keys())
if name != self.name or seen_params != expected_params:
raise NoMatchFound(name, path_params)
path, remaining_params = replace_params(
self.path_format, self.param_convertors, path_params
)
assert not remaining_params
return URLPath(path=path, protocol="http")
async def handle(self, scope: Scope, receive: Receive, send: Send) -> None:
if self.methods and scope["method"] not in self.methods:
headers = {"Allow": ", ".join(self.methods)}
if "app" in scope:
raise HTTPException(status_code=405, headers=headers)
else:
response = PlainTextResponse(
"Method Not Allowed", status_code=405, headers=headers
)
await response(scope, receive, send)
else:
await self.app(scope, receive, send)
def __eq__(self, other: typing.Any) -> bool:
return (
isinstance(other, Route)
and self.path == other.path
and self.endpoint == other.endpoint
and self.methods == other.methods
)
def __repr__(self) -> str:
class_name = self.__class__.__name__
methods = sorted(self.methods or [])
path, name = self.path, self.name
return f"{class_name}(path={path!r}, name={name!r}, methods={methods!r})"
class WebSocketRoute(BaseRoute):
def __init__(
self, path: str, endpoint: typing.Callable, *, name: typing.Optional[str] = None
) -> None:
assert path.startswith("/"), "Routed paths must start with '/'"
self.path = path
self.endpoint = endpoint
self.name = get_name(endpoint) if name is None else name
endpoint_handler = endpoint
while isinstance(endpoint_handler, functools.partial):
endpoint_handler = endpoint_handler.func
if inspect.isfunction(endpoint_handler) or inspect.ismethod(endpoint_handler):
# Endpoint is function or method. Treat it as `func(websocket)`.
self.app = websocket_session(endpoint)
else:
# Endpoint is a class. Treat it as ASGI.
self.app = endpoint
self.path_regex, self.path_format, self.param_convertors = compile_path(path)
def matches(self, scope: Scope) -> typing.Tuple[Match, Scope]:
if scope["type"] == "websocket":
match = self.path_regex.match(scope["path"])
if match:
matched_params = match.groupdict()
for key, value in matched_params.items():
matched_params[key] = self.param_convertors[key].convert(value)
path_params = dict(scope.get("path_params", {}))
path_params.update(matched_params)
child_scope = {"endpoint": self.endpoint, "path_params": path_params}
return Match.FULL, child_scope
return Match.NONE, {}
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
seen_params = set(path_params.keys())
expected_params = set(self.param_convertors.keys())
if name != self.name or seen_params != expected_params:
raise NoMatchFound(name, path_params)
path, remaining_params = replace_params(
self.path_format, self.param_convertors, path_params
)
assert not remaining_params
return URLPath(path=path, protocol="websocket")
async def handle(self, scope: Scope, receive: Receive, send: Send) -> None:
await self.app(scope, receive, send)
def __eq__(self, other: typing.Any) -> bool:
return (
isinstance(other, WebSocketRoute)
and self.path == other.path
and self.endpoint == other.endpoint
)
def __repr__(self) -> str:
return f"{self.__class__.__name__}(path={self.path!r}, name={self.name!r})"
class Mount(BaseRoute):
def __init__(
self,
path: str,
app: typing.Optional[ASGIApp] = None,
routes: typing.Optional[typing.Sequence[BaseRoute]] = None,
name: typing.Optional[str] = None,
*,
middleware: typing.Optional[typing.Sequence[Middleware]] = None,
) -> None:
assert path == "" or path.startswith("/"), "Routed paths must start with '/'"
assert (
app is not None or routes is not None
), "Either 'app=...', or 'routes=' must be specified"
self.path = path.rstrip("/")
if app is not None:
self._base_app: ASGIApp = app
else:
self._base_app = Router(routes=routes)
self.app = self._base_app
if middleware is not None:
for cls, options in reversed(middleware):
self.app = cls(app=self.app, **options)
self.name = name
self.path_regex, self.path_format, self.param_convertors = compile_path(
self.path + "/{path:path}"
)
@property
def routes(self) -> typing.List[BaseRoute]:
return getattr(self._base_app, "routes", [])
def matches(self, scope: Scope) -> typing.Tuple[Match, Scope]:
if scope["type"] in ("http", "websocket"):
path = scope["path"]
match = self.path_regex.match(path)
if match:
matched_params = match.groupdict()
for key, value in matched_params.items():
matched_params[key] = self.param_convertors[key].convert(value)
remaining_path = "/" + matched_params.pop("path")
matched_path = path[: -len(remaining_path)]
path_params = dict(scope.get("path_params", {}))
path_params.update(matched_params)
root_path = scope.get("root_path", "")
child_scope = {
"path_params": path_params,
"app_root_path": scope.get("app_root_path", root_path),
"root_path": root_path + matched_path,
"path": remaining_path,
"endpoint": self.app,
}
return Match.FULL, child_scope
return Match.NONE, {}
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
if self.name is not None and name == self.name and "path" in path_params:
# 'name' matches "<mount_name>".
path_params["path"] = path_params["path"].lstrip("/")
path, remaining_params = replace_params(
self.path_format, self.param_convertors, path_params
)
if not remaining_params:
return URLPath(path=path)
elif self.name is None or name.startswith(self.name + ":"):
if self.name is None:
# No mount name.
remaining_name = name
else:
# 'name' matches "<mount_name>:<child_name>".
remaining_name = name[len(self.name) + 1 :]
path_kwarg = path_params.get("path")
path_params["path"] = ""
path_prefix, remaining_params = replace_params(
self.path_format, self.param_convertors, path_params
)
if path_kwarg is not None:
remaining_params["path"] = path_kwarg
for route in self.routes or []:
try:
url = route.url_path_for(remaining_name, **remaining_params)
return URLPath(
path=path_prefix.rstrip("/") + str(url), protocol=url.protocol
)
except NoMatchFound:
pass
raise NoMatchFound(name, path_params)
async def handle(self, scope: Scope, receive: Receive, send: Send) -> None:
await self.app(scope, receive, send)
def __eq__(self, other: typing.Any) -> bool:
return (
isinstance(other, Mount)
and self.path == other.path
and self.app == other.app
)
def __repr__(self) -> str:
class_name = self.__class__.__name__
name = self.name or ""
return f"{class_name}(path={self.path!r}, name={name!r}, app={self.app!r})"
class Host(BaseRoute):
def __init__(
self, host: str, app: ASGIApp, name: typing.Optional[str] = None
) -> None:
assert not host.startswith("/"), "Host must not start with '/'"
self.host = host
self.app = app
self.name = name
self.host_regex, self.host_format, self.param_convertors = compile_path(host)
@property
def routes(self) -> typing.List[BaseRoute]:
return getattr(self.app, "routes", [])
def matches(self, scope: Scope) -> typing.Tuple[Match, Scope]:
if scope["type"] in ("http", "websocket"):
headers = Headers(scope=scope)
host = headers.get("host", "").split(":")[0]
match = self.host_regex.match(host)
if match:
matched_params = match.groupdict()
for key, value in matched_params.items():
matched_params[key] = self.param_convertors[key].convert(value)
path_params = dict(scope.get("path_params", {}))
path_params.update(matched_params)
child_scope = {"path_params": path_params, "endpoint": self.app}
return Match.FULL, child_scope
return Match.NONE, {}
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
if self.name is not None and name == self.name and "path" in path_params:
# 'name' matches "<mount_name>".
path = path_params.pop("path")
host, remaining_params = replace_params(
self.host_format, self.param_convertors, path_params
)
if not remaining_params:
return URLPath(path=path, host=host)
elif self.name is None or name.startswith(self.name + ":"):
if self.name is None:
# No mount name.
remaining_name = name
else:
# 'name' matches "<mount_name>:<child_name>".
remaining_name = name[len(self.name) + 1 :]
host, remaining_params = replace_params(
self.host_format, self.param_convertors, path_params
)
for route in self.routes or []:
try:
url = route.url_path_for(remaining_name, **remaining_params)
return URLPath(path=str(url), protocol=url.protocol, host=host)
except NoMatchFound:
pass
raise NoMatchFound(name, path_params)
async def handle(self, scope: Scope, receive: Receive, send: Send) -> None:
await self.app(scope, receive, send)
def __eq__(self, other: typing.Any) -> bool:
return (
isinstance(other, Host)
and self.host == other.host
and self.app == other.app
)
def __repr__(self) -> str:
class_name = self.__class__.__name__
name = self.name or ""
return f"{class_name}(host={self.host!r}, name={name!r}, app={self.app!r})"
_T = typing.TypeVar("_T")
class _AsyncLiftContextManager(typing.AsyncContextManager[_T]):
def __init__(self, cm: typing.ContextManager[_T]):
self._cm = cm
async def __aenter__(self) -> _T:
return self._cm.__enter__()
async def __aexit__(
self,
exc_type: typing.Optional[typing.Type[BaseException]],
exc_value: typing.Optional[BaseException],
traceback: typing.Optional[types.TracebackType],
) -> typing.Optional[bool]:
return self._cm.__exit__(exc_type, exc_value, traceback)
def _wrap_gen_lifespan_context(
lifespan_context: typing.Callable[[typing.Any], typing.Generator]
) -> typing.Callable[[typing.Any], typing.AsyncContextManager]:
cmgr = contextlib.contextmanager(lifespan_context)
@functools.wraps(cmgr)
def wrapper(app: typing.Any) -> _AsyncLiftContextManager:
return _AsyncLiftContextManager(cmgr(app))
return wrapper
class _DefaultLifespan:
def __init__(self, router: "Router"):
self._router = router
async def __aenter__(self) -> None:
await self._router.startup()
async def __aexit__(self, *exc_info: object) -> None:
await self._router.shutdown()
def __call__(self: _T, app: object) -> _T:
return self
class Router:
def __init__(
self,
routes: typing.Optional[typing.Sequence[BaseRoute]] = None,
redirect_slashes: bool = True,
default: typing.Optional[ASGIApp] = None,
on_startup: typing.Optional[typing.Sequence[typing.Callable]] = None,
on_shutdown: typing.Optional[typing.Sequence[typing.Callable]] = None,
lifespan: typing.Optional[
typing.Callable[[typing.Any], typing.AsyncContextManager]
] = None,
) -> None:
self.routes = [] if routes is None else list(routes)
self.redirect_slashes = redirect_slashes
self.default = self.not_found if default is None else default
self.on_startup = [] if on_startup is None else list(on_startup)
self.on_shutdown = [] if on_shutdown is None else list(on_shutdown)
if lifespan is None:
self.lifespan_context: typing.Callable[
[typing.Any], typing.AsyncContextManager
] = _DefaultLifespan(self)
elif inspect.isasyncgenfunction(lifespan):
warnings.warn(
"async generator function lifespans are deprecated, "
"use an @contextlib.asynccontextmanager function instead",
DeprecationWarning,
)
self.lifespan_context = asynccontextmanager(
lifespan, # type: ignore[arg-type]
)
elif inspect.isgeneratorfunction(lifespan):
warnings.warn(
"generator function lifespans are deprecated, "
"use an @contextlib.asynccontextmanager function instead",
DeprecationWarning,
)
self.lifespan_context = _wrap_gen_lifespan_context(
lifespan, # type: ignore[arg-type]
)
else:
self.lifespan_context = lifespan
async def not_found(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] == "websocket":
websocket_close = WebSocketClose()
await websocket_close(scope, receive, send)
return
# If we're running inside a starlette application then raise an
# exception, so that the configurable exception handler can deal with
# returning the response. For plain ASGI apps, just return the response.
if "app" in scope:
raise HTTPException(status_code=404)
else:
response = PlainTextResponse("Not Found", status_code=404)
await response(scope, receive, send)
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
for route in self.routes:
try:
return route.url_path_for(name, **path_params)
except NoMatchFound:
pass
raise NoMatchFound(name, path_params)
async def startup(self) -> None:
"""
Run any `.on_startup` event handlers.
"""
for handler in self.on_startup:
if is_async_callable(handler):
await handler()
else:
handler()
async def shutdown(self) -> None:
"""
Run any `.on_shutdown` event handlers.
"""
for handler in self.on_shutdown:
if is_async_callable(handler):
await handler()
else:
handler()
async def lifespan(self, scope: Scope, receive: Receive, send: Send) -> None:
"""
Handle ASGI lifespan messages, which allows us to manage application
startup and shutdown events.
"""
started = False
app = scope.get("app")
await receive()
try:
async with self.lifespan_context(app):
await send({"type": "lifespan.startup.complete"})
started = True
await receive()
except BaseException:
exc_text = traceback.format_exc()
if started:
await send({"type": "lifespan.shutdown.failed", "message": exc_text})
else:
await send({"type": "lifespan.startup.failed", "message": exc_text})
raise
else:
await send({"type": "lifespan.shutdown.complete"})
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
"""
The main entry point to the Router class.
"""
assert scope["type"] in ("http", "websocket", "lifespan")
if "router" not in scope:
scope["router"] = self
if scope["type"] == "lifespan":
await self.lifespan(scope, receive, send)
return
partial = None
for route in self.routes:
# Determine if any route matches the incoming scope,
# and hand over to the matching route if found.
match, child_scope = route.matches(scope)
if match == Match.FULL:
scope.update(child_scope)
await route.handle(scope, receive, send)
return
elif match == Match.PARTIAL and partial is None:
partial = route
partial_scope = child_scope
if partial is not None:
# Handle partial matches. These are cases where an endpoint is
# able to handle the request, but is not a preferred option.
# We use this in particular to deal with "405 Method Not Allowed".
scope.update(partial_scope)
await partial.handle(scope, receive, send)
return
if scope["type"] == "http" and self.redirect_slashes and scope["path"] != "/":
redirect_scope = dict(scope)
if scope["path"].endswith("/"):
redirect_scope["path"] = redirect_scope["path"].rstrip("/")
else:
redirect_scope["path"] = redirect_scope["path"] + "/"
for route in self.routes:
match, child_scope = route.matches(redirect_scope)
if match != Match.NONE:
redirect_url = URL(scope=redirect_scope)
response = RedirectResponse(url=str(redirect_url))
await response(scope, receive, send)
return
await self.default(scope, receive, send)
def __eq__(self, other: typing.Any) -> bool:
return isinstance(other, Router) and self.routes == other.routes
def mount(
self, path: str, app: ASGIApp, name: typing.Optional[str] = None
) -> None: # pragma: nocover
route = Mount(path, app=app, name=name)
self.routes.append(route)
def host(
self, host: str, app: ASGIApp, name: typing.Optional[str] = None
) -> None: # pragma: no cover
route = Host(host, app=app, name=name)
self.routes.append(route)
def add_route(
self,
path: str,
endpoint: typing.Callable,
methods: typing.Optional[typing.List[str]] = None,
name: typing.Optional[str] = None,
include_in_schema: bool = True,
) -> None: # pragma: nocover
route = Route(
path,
endpoint=endpoint,
methods=methods,
name=name,
include_in_schema=include_in_schema,
)
self.routes.append(route)
def add_websocket_route(
self, path: str, endpoint: typing.Callable, name: typing.Optional[str] = None
) -> None: # pragma: no cover
route = WebSocketRoute(path, endpoint=endpoint, name=name)
self.routes.append(route)
def route(
self,
path: str,
methods: typing.Optional[typing.List[str]] = None,
name: typing.Optional[str] = None,
include_in_schema: bool = True,
) -> typing.Callable:
"""
We no longer document this decorator style API, and its usage is discouraged.
Instead you should use the following approach:
>>> routes = [Route(path, endpoint=...), ...]
>>> app = Starlette(routes=routes)
"""
warnings.warn(
"The `route` decorator is deprecated, and will be removed in version 1.0.0."
"Refer to https://www.starlette.io/routing/#http-routing for the recommended approach.", # noqa: E501
DeprecationWarning,
)
def decorator(func: typing.Callable) -> typing.Callable:
self.add_route(
path,
func,
methods=methods,
name=name,
include_in_schema=include_in_schema,
)
return func
return decorator
def websocket_route(
self, path: str, name: typing.Optional[str] = None
) -> typing.Callable:
"""
We no longer document this decorator style API, and its usage is discouraged.
Instead you should use the following approach:
>>> routes = [WebSocketRoute(path, endpoint=...), ...]
>>> app = Starlette(routes=routes)
"""
warnings.warn(
"The `websocket_route` decorator is deprecated, and will be removed in version 1.0.0. Refer to " # noqa: E501
"https://www.starlette.io/routing/#websocket-routing for the recommended approach.", # noqa: E501
DeprecationWarning,
)
def decorator(func: typing.Callable) -> typing.Callable:
self.add_websocket_route(path, func, name=name)
return func
return decorator
def add_event_handler(
self, event_type: str, func: typing.Callable
) -> None: # pragma: no cover
assert event_type in ("startup", "shutdown")
if event_type == "startup":
self.on_startup.append(func)
else:
self.on_shutdown.append(func)
def on_event(self, event_type: str) -> typing.Callable:
warnings.warn(
"The `on_event` decorator is deprecated, and will be removed in version 1.0.0. " # noqa: E501
"Refer to https://www.starlette.io/events/#registering-events for recommended approach.", # noqa: E501
DeprecationWarning,
)
def decorator(func: typing.Callable) -> typing.Callable:
self.add_event_handler(event_type, func)
return func
return decorator
| 31,710 | Python | 36.26322 | 122 | 0.577483 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/types.py | import typing
Scope = typing.MutableMapping[str, typing.Any]
Message = typing.MutableMapping[str, typing.Any]
Receive = typing.Callable[[], typing.Awaitable[Message]]
Send = typing.Callable[[Message], typing.Awaitable[None]]
ASGIApp = typing.Callable[[Scope, Receive, Send], typing.Awaitable[None]]
| 302 | Python | 29.299997 | 73 | 0.764901 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/_utils.py | import asyncio
import functools
import sys
import typing
from types import TracebackType
if sys.version_info < (3, 8): # pragma: no cover
from typing_extensions import Protocol
else: # pragma: no cover
from typing import Protocol
def is_async_callable(obj: typing.Any) -> bool:
while isinstance(obj, functools.partial):
obj = obj.func
return asyncio.iscoroutinefunction(obj) or (
callable(obj) and asyncio.iscoroutinefunction(obj.__call__)
)
T_co = typing.TypeVar("T_co", covariant=True)
# TODO: once 3.8 is the minimum supported version (27 Jun 2023)
# this can just become
# class AwaitableOrContextManager(
# typing.Awaitable[T_co],
# typing.AsyncContextManager[T_co],
# typing.Protocol[T_co],
# ):
# pass
class AwaitableOrContextManager(Protocol[T_co]):
def __await__(self) -> typing.Generator[typing.Any, None, T_co]:
... # pragma: no cover
async def __aenter__(self) -> T_co:
... # pragma: no cover
async def __aexit__(
self,
__exc_type: typing.Optional[typing.Type[BaseException]],
__exc_value: typing.Optional[BaseException],
__traceback: typing.Optional[TracebackType],
) -> typing.Union[bool, None]:
... # pragma: no cover
class SupportsAsyncClose(Protocol):
async def close(self) -> None:
... # pragma: no cover
SupportsAsyncCloseType = typing.TypeVar(
"SupportsAsyncCloseType", bound=SupportsAsyncClose, covariant=False
)
class AwaitableOrContextManagerWrapper(typing.Generic[SupportsAsyncCloseType]):
__slots__ = ("aw", "entered")
def __init__(self, aw: typing.Awaitable[SupportsAsyncCloseType]) -> None:
self.aw = aw
def __await__(self) -> typing.Generator[typing.Any, None, SupportsAsyncCloseType]:
return self.aw.__await__()
async def __aenter__(self) -> SupportsAsyncCloseType:
self.entered = await self.aw
return self.entered
async def __aexit__(self, *args: typing.Any) -> typing.Union[None, bool]:
await self.entered.close()
return None
| 2,091 | Python | 26.893333 | 86 | 0.659015 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/staticfiles.py | import importlib.util
import os
import stat
import typing
from email.utils import parsedate
import anyio
from starlette.datastructures import URL, Headers
from starlette.exceptions import HTTPException
from starlette.responses import FileResponse, RedirectResponse, Response
from starlette.types import Receive, Scope, Send
PathLike = typing.Union[str, "os.PathLike[str]"]
class NotModifiedResponse(Response):
NOT_MODIFIED_HEADERS = (
"cache-control",
"content-location",
"date",
"etag",
"expires",
"vary",
)
def __init__(self, headers: Headers):
super().__init__(
status_code=304,
headers={
name: value
for name, value in headers.items()
if name in self.NOT_MODIFIED_HEADERS
},
)
class StaticFiles:
def __init__(
self,
*,
directory: typing.Optional[PathLike] = None,
packages: typing.Optional[
typing.List[typing.Union[str, typing.Tuple[str, str]]]
] = None,
html: bool = False,
check_dir: bool = True,
follow_symlink: bool = False,
) -> None:
self.directory = directory
self.packages = packages
self.all_directories = self.get_directories(directory, packages)
self.html = html
self.config_checked = False
self.follow_symlink = follow_symlink
if check_dir and directory is not None and not os.path.isdir(directory):
raise RuntimeError(f"Directory '{directory}' does not exist")
def get_directories(
self,
directory: typing.Optional[PathLike] = None,
packages: typing.Optional[
typing.List[typing.Union[str, typing.Tuple[str, str]]]
] = None,
) -> typing.List[PathLike]:
"""
Given `directory` and `packages` arguments, return a list of all the
directories that should be used for serving static files from.
"""
directories = []
if directory is not None:
directories.append(directory)
for package in packages or []:
if isinstance(package, tuple):
package, statics_dir = package
else:
statics_dir = "statics"
spec = importlib.util.find_spec(package)
assert spec is not None, f"Package {package!r} could not be found."
assert spec.origin is not None, f"Package {package!r} could not be found."
package_directory = os.path.normpath(
os.path.join(spec.origin, "..", statics_dir)
)
assert os.path.isdir(
package_directory
), f"Directory '{statics_dir!r}' in package {package!r} could not be found."
directories.append(package_directory)
return directories
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
"""
The ASGI entry point.
"""
assert scope["type"] == "http"
if not self.config_checked:
await self.check_config()
self.config_checked = True
path = self.get_path(scope)
response = await self.get_response(path, scope)
await response(scope, receive, send)
def get_path(self, scope: Scope) -> str:
"""
Given the ASGI scope, return the `path` string to serve up,
with OS specific path separators, and any '..', '.' components removed.
"""
return os.path.normpath(os.path.join(*scope["path"].split("/")))
async def get_response(self, path: str, scope: Scope) -> Response:
"""
Returns an HTTP response, given the incoming path, method and request headers.
"""
if scope["method"] not in ("GET", "HEAD"):
raise HTTPException(status_code=405)
try:
full_path, stat_result = await anyio.to_thread.run_sync(
self.lookup_path, path
)
except PermissionError:
raise HTTPException(status_code=401)
except OSError:
raise
if stat_result and stat.S_ISREG(stat_result.st_mode):
# We have a static file to serve.
return self.file_response(full_path, stat_result, scope)
elif stat_result and stat.S_ISDIR(stat_result.st_mode) and self.html:
# We're in HTML mode, and have got a directory URL.
# Check if we have 'index.html' file to serve.
index_path = os.path.join(path, "index.html")
full_path, stat_result = await anyio.to_thread.run_sync(
self.lookup_path, index_path
)
if stat_result is not None and stat.S_ISREG(stat_result.st_mode):
if not scope["path"].endswith("/"):
# Directory URLs should redirect to always end in "/".
url = URL(scope=scope)
url = url.replace(path=url.path + "/")
return RedirectResponse(url=url)
return self.file_response(full_path, stat_result, scope)
if self.html:
# Check for '404.html' if we're in HTML mode.
full_path, stat_result = await anyio.to_thread.run_sync(
self.lookup_path, "404.html"
)
if stat_result and stat.S_ISREG(stat_result.st_mode):
return FileResponse(
full_path,
stat_result=stat_result,
method=scope["method"],
status_code=404,
)
raise HTTPException(status_code=404)
def lookup_path(
self, path: str
) -> typing.Tuple[str, typing.Optional[os.stat_result]]:
for directory in self.all_directories:
joined_path = os.path.join(directory, path)
if self.follow_symlink:
full_path = os.path.abspath(joined_path)
else:
full_path = os.path.realpath(joined_path)
directory = os.path.realpath(directory)
if os.path.commonprefix([full_path, directory]) != directory:
# Don't allow misbehaving clients to break out of the static files
# directory.
continue
try:
return full_path, os.stat(full_path)
except (FileNotFoundError, NotADirectoryError):
continue
return "", None
def file_response(
self,
full_path: PathLike,
stat_result: os.stat_result,
scope: Scope,
status_code: int = 200,
) -> Response:
method = scope["method"]
request_headers = Headers(scope=scope)
response = FileResponse(
full_path, status_code=status_code, stat_result=stat_result, method=method
)
if self.is_not_modified(response.headers, request_headers):
return NotModifiedResponse(response.headers)
return response
async def check_config(self) -> None:
"""
Perform a one-off configuration check that StaticFiles is actually
pointed at a directory, so that we can raise loud errors rather than
just returning 404 responses.
"""
if self.directory is None:
return
try:
stat_result = await anyio.to_thread.run_sync(os.stat, self.directory)
except FileNotFoundError:
raise RuntimeError(
f"StaticFiles directory '{self.directory}' does not exist."
)
if not (stat.S_ISDIR(stat_result.st_mode) or stat.S_ISLNK(stat_result.st_mode)):
raise RuntimeError(
f"StaticFiles path '{self.directory}' is not a directory."
)
def is_not_modified(
self, response_headers: Headers, request_headers: Headers
) -> bool:
"""
Given the request and response headers, return `True` if an HTTP
"Not Modified" response could be returned instead.
"""
try:
if_none_match = request_headers["if-none-match"]
etag = response_headers["etag"]
if if_none_match == etag:
return True
except KeyError:
pass
try:
if_modified_since = parsedate(request_headers["if-modified-since"])
last_modified = parsedate(response_headers["last-modified"])
if (
if_modified_since is not None
and last_modified is not None
and if_modified_since >= last_modified
):
return True
except KeyError:
pass
return False
| 8,735 | Python | 34.368421 | 88 | 0.565197 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/requests.py | import json
import typing
from http import cookies as http_cookies
import anyio
from starlette._utils import AwaitableOrContextManager, AwaitableOrContextManagerWrapper
from starlette.datastructures import URL, Address, FormData, Headers, QueryParams, State
from starlette.exceptions import HTTPException
from starlette.formparsers import FormParser, MultiPartException, MultiPartParser
from starlette.types import Message, Receive, Scope, Send
try:
from multipart.multipart import parse_options_header
except ImportError: # pragma: nocover
parse_options_header = None
if typing.TYPE_CHECKING:
from starlette.routing import Router
SERVER_PUSH_HEADERS_TO_COPY = {
"accept",
"accept-encoding",
"accept-language",
"cache-control",
"user-agent",
}
def cookie_parser(cookie_string: str) -> typing.Dict[str, str]:
"""
This function parses a ``Cookie`` HTTP header into a dict of key/value pairs.
It attempts to mimic browser cookie parsing behavior: browsers and web servers
frequently disregard the spec (RFC 6265) when setting and reading cookies,
so we attempt to suit the common scenarios here.
This function has been adapted from Django 3.1.0.
Note: we are explicitly _NOT_ using `SimpleCookie.load` because it is based
on an outdated spec and will fail on lots of input we want to support
"""
cookie_dict: typing.Dict[str, str] = {}
for chunk in cookie_string.split(";"):
if "=" in chunk:
key, val = chunk.split("=", 1)
else:
# Assume an empty name per
# https://bugzilla.mozilla.org/show_bug.cgi?id=169091
key, val = "", chunk
key, val = key.strip(), val.strip()
if key or val:
# unquote using Python's algorithm.
cookie_dict[key] = http_cookies._unquote(val)
return cookie_dict
class ClientDisconnect(Exception):
pass
class HTTPConnection(typing.Mapping[str, typing.Any]):
"""
A base class for incoming HTTP connections, that is used to provide
any functionality that is common to both `Request` and `WebSocket`.
"""
def __init__(self, scope: Scope, receive: typing.Optional[Receive] = None) -> None:
assert scope["type"] in ("http", "websocket")
self.scope = scope
def __getitem__(self, key: str) -> typing.Any:
return self.scope[key]
def __iter__(self) -> typing.Iterator[str]:
return iter(self.scope)
def __len__(self) -> int:
return len(self.scope)
# Don't use the `abc.Mapping.__eq__` implementation.
# Connection instances should never be considered equal
# unless `self is other`.
__eq__ = object.__eq__
__hash__ = object.__hash__
@property
def app(self) -> typing.Any:
return self.scope["app"]
@property
def url(self) -> URL:
if not hasattr(self, "_url"):
self._url = URL(scope=self.scope)
return self._url
@property
def base_url(self) -> URL:
if not hasattr(self, "_base_url"):
base_url_scope = dict(self.scope)
base_url_scope["path"] = "/"
base_url_scope["query_string"] = b""
base_url_scope["root_path"] = base_url_scope.get(
"app_root_path", base_url_scope.get("root_path", "")
)
self._base_url = URL(scope=base_url_scope)
return self._base_url
@property
def headers(self) -> Headers:
if not hasattr(self, "_headers"):
self._headers = Headers(scope=self.scope)
return self._headers
@property
def query_params(self) -> QueryParams:
if not hasattr(self, "_query_params"):
self._query_params = QueryParams(self.scope["query_string"])
return self._query_params
@property
def path_params(self) -> typing.Dict[str, typing.Any]:
return self.scope.get("path_params", {})
@property
def cookies(self) -> typing.Dict[str, str]:
if not hasattr(self, "_cookies"):
cookies: typing.Dict[str, str] = {}
cookie_header = self.headers.get("cookie")
if cookie_header:
cookies = cookie_parser(cookie_header)
self._cookies = cookies
return self._cookies
@property
def client(self) -> typing.Optional[Address]:
# client is a 2 item tuple of (host, port), None or missing
host_port = self.scope.get("client")
if host_port is not None:
return Address(*host_port)
return None
@property
def session(self) -> typing.Dict[str, typing.Any]:
assert (
"session" in self.scope
), "SessionMiddleware must be installed to access request.session"
return self.scope["session"]
@property
def auth(self) -> typing.Any:
assert (
"auth" in self.scope
), "AuthenticationMiddleware must be installed to access request.auth"
return self.scope["auth"]
@property
def user(self) -> typing.Any:
assert (
"user" in self.scope
), "AuthenticationMiddleware must be installed to access request.user"
return self.scope["user"]
@property
def state(self) -> State:
if not hasattr(self, "_state"):
# Ensure 'state' has an empty dict if it's not already populated.
self.scope.setdefault("state", {})
# Create a state instance with a reference to the dict in which it should
# store info
self._state = State(self.scope["state"])
return self._state
def url_for(self, name: str, **path_params: typing.Any) -> str:
router: Router = self.scope["router"]
url_path = router.url_path_for(name, **path_params)
return url_path.make_absolute_url(base_url=self.base_url)
async def empty_receive() -> typing.NoReturn:
raise RuntimeError("Receive channel has not been made available")
async def empty_send(message: Message) -> typing.NoReturn:
raise RuntimeError("Send channel has not been made available")
class Request(HTTPConnection):
_form: typing.Optional[FormData]
def __init__(
self, scope: Scope, receive: Receive = empty_receive, send: Send = empty_send
):
super().__init__(scope)
assert scope["type"] == "http"
self._receive = receive
self._send = send
self._stream_consumed = False
self._is_disconnected = False
self._form = None
@property
def method(self) -> str:
return self.scope["method"]
@property
def receive(self) -> Receive:
return self._receive
async def stream(self) -> typing.AsyncGenerator[bytes, None]:
if hasattr(self, "_body"):
yield self._body
yield b""
return
if self._stream_consumed:
raise RuntimeError("Stream consumed")
self._stream_consumed = True
while True:
message = await self._receive()
if message["type"] == "http.request":
body = message.get("body", b"")
if body:
yield body
if not message.get("more_body", False):
break
elif message["type"] == "http.disconnect":
self._is_disconnected = True
raise ClientDisconnect()
yield b""
async def body(self) -> bytes:
if not hasattr(self, "_body"):
chunks: "typing.List[bytes]" = []
async for chunk in self.stream():
chunks.append(chunk)
self._body = b"".join(chunks)
return self._body
async def json(self) -> typing.Any:
if not hasattr(self, "_json"):
body = await self.body()
self._json = json.loads(body)
return self._json
async def _get_form(
self,
*,
max_files: typing.Union[int, float] = 1000,
max_fields: typing.Union[int, float] = 1000,
) -> FormData:
if self._form is None:
assert (
parse_options_header is not None
), "The `python-multipart` library must be installed to use form parsing."
content_type_header = self.headers.get("Content-Type")
content_type: bytes
content_type, _ = parse_options_header(content_type_header)
if content_type == b"multipart/form-data":
try:
multipart_parser = MultiPartParser(
self.headers,
self.stream(),
max_files=max_files,
max_fields=max_fields,
)
self._form = await multipart_parser.parse()
except MultiPartException as exc:
if "app" in self.scope:
raise HTTPException(status_code=400, detail=exc.message)
raise exc
elif content_type == b"application/x-www-form-urlencoded":
form_parser = FormParser(self.headers, self.stream())
self._form = await form_parser.parse()
else:
self._form = FormData()
return self._form
def form(
self,
*,
max_files: typing.Union[int, float] = 1000,
max_fields: typing.Union[int, float] = 1000,
) -> AwaitableOrContextManager[FormData]:
return AwaitableOrContextManagerWrapper(
self._get_form(max_files=max_files, max_fields=max_fields)
)
async def close(self) -> None:
if self._form is not None:
await self._form.close()
async def is_disconnected(self) -> bool:
if not self._is_disconnected:
message: Message = {}
# If message isn't immediately available, move on
with anyio.CancelScope() as cs:
cs.cancel()
message = await self._receive()
if message.get("type") == "http.disconnect":
self._is_disconnected = True
return self._is_disconnected
async def send_push_promise(self, path: str) -> None:
if "http.response.push" in self.scope.get("extensions", {}):
raw_headers: "typing.List[typing.Tuple[bytes, bytes]]" = []
for name in SERVER_PUSH_HEADERS_TO_COPY:
for value in self.headers.getlist(name):
raw_headers.append(
(name.encode("latin-1"), value.encode("latin-1"))
)
await self._send(
{"type": "http.response.push", "path": path, "headers": raw_headers}
)
| 10,745 | Python | 32.68652 | 88 | 0.578595 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/convertors.py | import math
import typing
import uuid
T = typing.TypeVar("T")
class Convertor(typing.Generic[T]):
regex: typing.ClassVar[str] = ""
def convert(self, value: str) -> T:
raise NotImplementedError() # pragma: no cover
def to_string(self, value: T) -> str:
raise NotImplementedError() # pragma: no cover
class StringConvertor(Convertor):
regex = "[^/]+"
def convert(self, value: str) -> str:
return value
def to_string(self, value: str) -> str:
value = str(value)
assert "/" not in value, "May not contain path separators"
assert value, "Must not be empty"
return value
class PathConvertor(Convertor):
regex = ".*"
def convert(self, value: str) -> str:
return str(value)
def to_string(self, value: str) -> str:
return str(value)
class IntegerConvertor(Convertor):
regex = "[0-9]+"
def convert(self, value: str) -> int:
return int(value)
def to_string(self, value: int) -> str:
value = int(value)
assert value >= 0, "Negative integers are not supported"
return str(value)
class FloatConvertor(Convertor):
regex = r"[0-9]+(\.[0-9]+)?"
def convert(self, value: str) -> float:
return float(value)
def to_string(self, value: float) -> str:
value = float(value)
assert value >= 0.0, "Negative floats are not supported"
assert not math.isnan(value), "NaN values are not supported"
assert not math.isinf(value), "Infinite values are not supported"
return ("%0.20f" % value).rstrip("0").rstrip(".")
class UUIDConvertor(Convertor):
regex = "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
def convert(self, value: str) -> uuid.UUID:
return uuid.UUID(value)
def to_string(self, value: uuid.UUID) -> str:
return str(value)
CONVERTOR_TYPES = {
"str": StringConvertor(),
"path": PathConvertor(),
"int": IntegerConvertor(),
"float": FloatConvertor(),
"uuid": UUIDConvertor(),
}
def register_url_convertor(key: str, convertor: Convertor) -> None:
CONVERTOR_TYPES[key] = convertor
| 2,168 | Python | 23.647727 | 74 | 0.60655 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/status.py | """
HTTP codes
See HTTP Status Code Registry:
https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
And RFC 2324 - https://tools.ietf.org/html/rfc2324
"""
import warnings
from typing import List
__all__ = (
"HTTP_100_CONTINUE",
"HTTP_101_SWITCHING_PROTOCOLS",
"HTTP_102_PROCESSING",
"HTTP_103_EARLY_HINTS",
"HTTP_200_OK",
"HTTP_201_CREATED",
"HTTP_202_ACCEPTED",
"HTTP_203_NON_AUTHORITATIVE_INFORMATION",
"HTTP_204_NO_CONTENT",
"HTTP_205_RESET_CONTENT",
"HTTP_206_PARTIAL_CONTENT",
"HTTP_207_MULTI_STATUS",
"HTTP_208_ALREADY_REPORTED",
"HTTP_226_IM_USED",
"HTTP_300_MULTIPLE_CHOICES",
"HTTP_301_MOVED_PERMANENTLY",
"HTTP_302_FOUND",
"HTTP_303_SEE_OTHER",
"HTTP_304_NOT_MODIFIED",
"HTTP_305_USE_PROXY",
"HTTP_306_RESERVED",
"HTTP_307_TEMPORARY_REDIRECT",
"HTTP_308_PERMANENT_REDIRECT",
"HTTP_400_BAD_REQUEST",
"HTTP_401_UNAUTHORIZED",
"HTTP_402_PAYMENT_REQUIRED",
"HTTP_403_FORBIDDEN",
"HTTP_404_NOT_FOUND",
"HTTP_405_METHOD_NOT_ALLOWED",
"HTTP_406_NOT_ACCEPTABLE",
"HTTP_407_PROXY_AUTHENTICATION_REQUIRED",
"HTTP_408_REQUEST_TIMEOUT",
"HTTP_409_CONFLICT",
"HTTP_410_GONE",
"HTTP_411_LENGTH_REQUIRED",
"HTTP_412_PRECONDITION_FAILED",
"HTTP_413_REQUEST_ENTITY_TOO_LARGE",
"HTTP_414_REQUEST_URI_TOO_LONG",
"HTTP_415_UNSUPPORTED_MEDIA_TYPE",
"HTTP_416_REQUESTED_RANGE_NOT_SATISFIABLE",
"HTTP_417_EXPECTATION_FAILED",
"HTTP_418_IM_A_TEAPOT",
"HTTP_421_MISDIRECTED_REQUEST",
"HTTP_422_UNPROCESSABLE_ENTITY",
"HTTP_423_LOCKED",
"HTTP_424_FAILED_DEPENDENCY",
"HTTP_425_TOO_EARLY",
"HTTP_426_UPGRADE_REQUIRED",
"HTTP_428_PRECONDITION_REQUIRED",
"HTTP_429_TOO_MANY_REQUESTS",
"HTTP_431_REQUEST_HEADER_FIELDS_TOO_LARGE",
"HTTP_451_UNAVAILABLE_FOR_LEGAL_REASONS",
"HTTP_500_INTERNAL_SERVER_ERROR",
"HTTP_501_NOT_IMPLEMENTED",
"HTTP_502_BAD_GATEWAY",
"HTTP_503_SERVICE_UNAVAILABLE",
"HTTP_504_GATEWAY_TIMEOUT",
"HTTP_505_HTTP_VERSION_NOT_SUPPORTED",
"HTTP_506_VARIANT_ALSO_NEGOTIATES",
"HTTP_507_INSUFFICIENT_STORAGE",
"HTTP_508_LOOP_DETECTED",
"HTTP_510_NOT_EXTENDED",
"HTTP_511_NETWORK_AUTHENTICATION_REQUIRED",
"WS_1000_NORMAL_CLOSURE",
"WS_1001_GOING_AWAY",
"WS_1002_PROTOCOL_ERROR",
"WS_1003_UNSUPPORTED_DATA",
"WS_1005_NO_STATUS_RCVD",
"WS_1006_ABNORMAL_CLOSURE",
"WS_1007_INVALID_FRAME_PAYLOAD_DATA",
"WS_1008_POLICY_VIOLATION",
"WS_1009_MESSAGE_TOO_BIG",
"WS_1010_MANDATORY_EXT",
"WS_1011_INTERNAL_ERROR",
"WS_1012_SERVICE_RESTART",
"WS_1013_TRY_AGAIN_LATER",
"WS_1014_BAD_GATEWAY",
"WS_1015_TLS_HANDSHAKE",
)
HTTP_100_CONTINUE = 100
HTTP_101_SWITCHING_PROTOCOLS = 101
HTTP_102_PROCESSING = 102
HTTP_103_EARLY_HINTS = 103
HTTP_200_OK = 200
HTTP_201_CREATED = 201
HTTP_202_ACCEPTED = 202
HTTP_203_NON_AUTHORITATIVE_INFORMATION = 203
HTTP_204_NO_CONTENT = 204
HTTP_205_RESET_CONTENT = 205
HTTP_206_PARTIAL_CONTENT = 206
HTTP_207_MULTI_STATUS = 207
HTTP_208_ALREADY_REPORTED = 208
HTTP_226_IM_USED = 226
HTTP_300_MULTIPLE_CHOICES = 300
HTTP_301_MOVED_PERMANENTLY = 301
HTTP_302_FOUND = 302
HTTP_303_SEE_OTHER = 303
HTTP_304_NOT_MODIFIED = 304
HTTP_305_USE_PROXY = 305
HTTP_306_RESERVED = 306
HTTP_307_TEMPORARY_REDIRECT = 307
HTTP_308_PERMANENT_REDIRECT = 308
HTTP_400_BAD_REQUEST = 400
HTTP_401_UNAUTHORIZED = 401
HTTP_402_PAYMENT_REQUIRED = 402
HTTP_403_FORBIDDEN = 403
HTTP_404_NOT_FOUND = 404
HTTP_405_METHOD_NOT_ALLOWED = 405
HTTP_406_NOT_ACCEPTABLE = 406
HTTP_407_PROXY_AUTHENTICATION_REQUIRED = 407
HTTP_408_REQUEST_TIMEOUT = 408
HTTP_409_CONFLICT = 409
HTTP_410_GONE = 410
HTTP_411_LENGTH_REQUIRED = 411
HTTP_412_PRECONDITION_FAILED = 412
HTTP_413_REQUEST_ENTITY_TOO_LARGE = 413
HTTP_414_REQUEST_URI_TOO_LONG = 414
HTTP_415_UNSUPPORTED_MEDIA_TYPE = 415
HTTP_416_REQUESTED_RANGE_NOT_SATISFIABLE = 416
HTTP_417_EXPECTATION_FAILED = 417
HTTP_418_IM_A_TEAPOT = 418
HTTP_421_MISDIRECTED_REQUEST = 421
HTTP_422_UNPROCESSABLE_ENTITY = 422
HTTP_423_LOCKED = 423
HTTP_424_FAILED_DEPENDENCY = 424
HTTP_425_TOO_EARLY = 425
HTTP_426_UPGRADE_REQUIRED = 426
HTTP_428_PRECONDITION_REQUIRED = 428
HTTP_429_TOO_MANY_REQUESTS = 429
HTTP_431_REQUEST_HEADER_FIELDS_TOO_LARGE = 431
HTTP_451_UNAVAILABLE_FOR_LEGAL_REASONS = 451
HTTP_500_INTERNAL_SERVER_ERROR = 500
HTTP_501_NOT_IMPLEMENTED = 501
HTTP_502_BAD_GATEWAY = 502
HTTP_503_SERVICE_UNAVAILABLE = 503
HTTP_504_GATEWAY_TIMEOUT = 504
HTTP_505_HTTP_VERSION_NOT_SUPPORTED = 505
HTTP_506_VARIANT_ALSO_NEGOTIATES = 506
HTTP_507_INSUFFICIENT_STORAGE = 507
HTTP_508_LOOP_DETECTED = 508
HTTP_510_NOT_EXTENDED = 510
HTTP_511_NETWORK_AUTHENTICATION_REQUIRED = 511
"""
WebSocket codes
https://www.iana.org/assignments/websocket/websocket.xml#close-code-number
https://developer.mozilla.org/en-US/docs/Web/API/CloseEvent
"""
WS_1000_NORMAL_CLOSURE = 1000
WS_1001_GOING_AWAY = 1001
WS_1002_PROTOCOL_ERROR = 1002
WS_1003_UNSUPPORTED_DATA = 1003
WS_1005_NO_STATUS_RCVD = 1005
WS_1006_ABNORMAL_CLOSURE = 1006
WS_1007_INVALID_FRAME_PAYLOAD_DATA = 1007
WS_1008_POLICY_VIOLATION = 1008
WS_1009_MESSAGE_TOO_BIG = 1009
WS_1010_MANDATORY_EXT = 1010
WS_1011_INTERNAL_ERROR = 1011
WS_1012_SERVICE_RESTART = 1012
WS_1013_TRY_AGAIN_LATER = 1013
WS_1014_BAD_GATEWAY = 1014
WS_1015_TLS_HANDSHAKE = 1015
__deprecated__ = {"WS_1004_NO_STATUS_RCVD": 1004, "WS_1005_ABNORMAL_CLOSURE": 1005}
def __getattr__(name: str) -> int:
deprecation_changes = {
"WS_1004_NO_STATUS_RCVD": "WS_1005_NO_STATUS_RCVD",
"WS_1005_ABNORMAL_CLOSURE": "WS_1006_ABNORMAL_CLOSURE",
}
deprecated = __deprecated__.get(name)
if deprecated:
warnings.warn(
f"'{name}' is deprecated. Use '{deprecation_changes[name]}' instead.",
category=DeprecationWarning,
stacklevel=3,
)
return deprecated
raise AttributeError(f"module '{__name__}' has no attribute '{name}'")
def __dir__() -> List[str]:
return sorted(list(__all__) + list(__deprecated__.keys())) # pragma: no cover
| 6,086 | Python | 29.435 | 83 | 0.698324 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/applications.py | import typing
import warnings
from starlette.datastructures import State, URLPath
from starlette.middleware import Middleware
from starlette.middleware.base import BaseHTTPMiddleware
from starlette.middleware.errors import ServerErrorMiddleware
from starlette.middleware.exceptions import ExceptionMiddleware
from starlette.requests import Request
from starlette.responses import Response
from starlette.routing import BaseRoute, Router
from starlette.types import ASGIApp, Receive, Scope, Send
class Starlette:
"""
Creates an application instance.
**Parameters:**
* **debug** - Boolean indicating if debug tracebacks should be returned on errors.
* **routes** - A list of routes to serve incoming HTTP and WebSocket requests.
* **middleware** - A list of middleware to run for every request. A starlette
application will always automatically include two middleware classes.
`ServerErrorMiddleware` is added as the very outermost middleware, to handle
any uncaught errors occurring anywhere in the entire stack.
`ExceptionMiddleware` is added as the very innermost middleware, to deal
with handled exception cases occurring in the routing or endpoints.
* **exception_handlers** - A mapping of either integer status codes,
or exception class types onto callables which handle the exceptions.
Exception handler callables should be of the form
`handler(request, exc) -> response` and may be be either standard functions, or
async functions.
* **on_startup** - A list of callables to run on application startup.
Startup handler callables do not take any arguments, and may be be either
standard functions, or async functions.
* **on_shutdown** - A list of callables to run on application shutdown.
Shutdown handler callables do not take any arguments, and may be be either
standard functions, or async functions.
"""
def __init__(
self,
debug: bool = False,
routes: typing.Optional[typing.Sequence[BaseRoute]] = None,
middleware: typing.Optional[typing.Sequence[Middleware]] = None,
exception_handlers: typing.Optional[
typing.Mapping[
typing.Any,
typing.Callable[
[Request, Exception],
typing.Union[Response, typing.Awaitable[Response]],
],
]
] = None,
on_startup: typing.Optional[typing.Sequence[typing.Callable]] = None,
on_shutdown: typing.Optional[typing.Sequence[typing.Callable]] = None,
lifespan: typing.Optional[
typing.Callable[["Starlette"], typing.AsyncContextManager]
] = None,
) -> None:
# The lifespan context function is a newer style that replaces
# on_startup / on_shutdown handlers. Use one or the other, not both.
assert lifespan is None or (
on_startup is None and on_shutdown is None
), "Use either 'lifespan' or 'on_startup'/'on_shutdown', not both."
self.debug = debug
self.state = State()
self.router = Router(
routes, on_startup=on_startup, on_shutdown=on_shutdown, lifespan=lifespan
)
self.exception_handlers = (
{} if exception_handlers is None else dict(exception_handlers)
)
self.user_middleware = [] if middleware is None else list(middleware)
self.middleware_stack: typing.Optional[ASGIApp] = None
def build_middleware_stack(self) -> ASGIApp:
debug = self.debug
error_handler = None
exception_handlers: typing.Dict[
typing.Any, typing.Callable[[Request, Exception], Response]
] = {}
for key, value in self.exception_handlers.items():
if key in (500, Exception):
error_handler = value
else:
exception_handlers[key] = value
middleware = (
[Middleware(ServerErrorMiddleware, handler=error_handler, debug=debug)]
+ self.user_middleware
+ [
Middleware(
ExceptionMiddleware, handlers=exception_handlers, debug=debug
)
]
)
app = self.router
for cls, options in reversed(middleware):
app = cls(app=app, **options)
return app
@property
def routes(self) -> typing.List[BaseRoute]:
return self.router.routes
def url_path_for(self, name: str, **path_params: typing.Any) -> URLPath:
return self.router.url_path_for(name, **path_params)
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
scope["app"] = self
if self.middleware_stack is None:
self.middleware_stack = self.build_middleware_stack()
await self.middleware_stack(scope, receive, send)
def on_event(self, event_type: str) -> typing.Callable: # pragma: nocover
return self.router.on_event(event_type)
def mount(
self, path: str, app: ASGIApp, name: typing.Optional[str] = None
) -> None: # pragma: nocover
self.router.mount(path, app=app, name=name)
def host(
self, host: str, app: ASGIApp, name: typing.Optional[str] = None
) -> None: # pragma: no cover
self.router.host(host, app=app, name=name)
def add_middleware(self, middleware_class: type, **options: typing.Any) -> None:
if self.middleware_stack is not None: # pragma: no cover
raise RuntimeError("Cannot add middleware after an application has started")
self.user_middleware.insert(0, Middleware(middleware_class, **options))
def add_exception_handler(
self,
exc_class_or_status_code: typing.Union[int, typing.Type[Exception]],
handler: typing.Callable,
) -> None: # pragma: no cover
self.exception_handlers[exc_class_or_status_code] = handler
def add_event_handler(
self, event_type: str, func: typing.Callable
) -> None: # pragma: no cover
self.router.add_event_handler(event_type, func)
def add_route(
self,
path: str,
route: typing.Callable,
methods: typing.Optional[typing.List[str]] = None,
name: typing.Optional[str] = None,
include_in_schema: bool = True,
) -> None: # pragma: no cover
self.router.add_route(
path, route, methods=methods, name=name, include_in_schema=include_in_schema
)
def add_websocket_route(
self, path: str, route: typing.Callable, name: typing.Optional[str] = None
) -> None: # pragma: no cover
self.router.add_websocket_route(path, route, name=name)
def exception_handler(
self, exc_class_or_status_code: typing.Union[int, typing.Type[Exception]]
) -> typing.Callable:
warnings.warn(
"The `exception_handler` decorator is deprecated, and will be removed in version 1.0.0. " # noqa: E501
"Refer to https://www.starlette.io/exceptions/ for the recommended approach.", # noqa: E501
DeprecationWarning,
)
def decorator(func: typing.Callable) -> typing.Callable:
self.add_exception_handler(exc_class_or_status_code, func)
return func
return decorator
def route(
self,
path: str,
methods: typing.Optional[typing.List[str]] = None,
name: typing.Optional[str] = None,
include_in_schema: bool = True,
) -> typing.Callable:
"""
We no longer document this decorator style API, and its usage is discouraged.
Instead you should use the following approach:
>>> routes = [Route(path, endpoint=...), ...]
>>> app = Starlette(routes=routes)
"""
warnings.warn(
"The `route` decorator is deprecated, and will be removed in version 1.0.0. " # noqa: E501
"Refer to https://www.starlette.io/routing/ for the recommended approach.", # noqa: E501
DeprecationWarning,
)
def decorator(func: typing.Callable) -> typing.Callable:
self.router.add_route(
path,
func,
methods=methods,
name=name,
include_in_schema=include_in_schema,
)
return func
return decorator
def websocket_route(
self, path: str, name: typing.Optional[str] = None
) -> typing.Callable:
"""
We no longer document this decorator style API, and its usage is discouraged.
Instead you should use the following approach:
>>> routes = [WebSocketRoute(path, endpoint=...), ...]
>>> app = Starlette(routes=routes)
"""
warnings.warn(
"The `websocket_route` decorator is deprecated, and will be removed in version 1.0.0. " # noqa: E501
"Refer to https://www.starlette.io/routing/#websocket-routing for the recommended approach.", # noqa: E501
DeprecationWarning,
)
def decorator(func: typing.Callable) -> typing.Callable:
self.router.add_websocket_route(path, func, name=name)
return func
return decorator
def middleware(self, middleware_type: str) -> typing.Callable:
"""
We no longer document this decorator style API, and its usage is discouraged.
Instead you should use the following approach:
>>> middleware = [Middleware(...), ...]
>>> app = Starlette(middleware=middleware)
"""
warnings.warn(
"The `middleware` decorator is deprecated, and will be removed in version 1.0.0. " # noqa: E501
"Refer to https://www.starlette.io/middleware/#using-middleware for recommended approach.", # noqa: E501
DeprecationWarning,
)
assert (
middleware_type == "http"
), 'Currently only middleware("http") is supported.'
def decorator(func: typing.Callable) -> typing.Callable:
self.add_middleware(BaseHTTPMiddleware, dispatch=func)
return func
return decorator
| 10,174 | Python | 38.437984 | 119 | 0.625713 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/schemas.py | import inspect
import re
import typing
from starlette.requests import Request
from starlette.responses import Response
from starlette.routing import BaseRoute, Mount, Route
try:
import yaml
except ImportError: # pragma: nocover
yaml = None # type: ignore[assignment]
class OpenAPIResponse(Response):
media_type = "application/vnd.oai.openapi"
def render(self, content: typing.Any) -> bytes:
assert yaml is not None, "`pyyaml` must be installed to use OpenAPIResponse."
assert isinstance(
content, dict
), "The schema passed to OpenAPIResponse should be a dictionary."
return yaml.dump(content, default_flow_style=False).encode("utf-8")
class EndpointInfo(typing.NamedTuple):
path: str
http_method: str
func: typing.Callable
class BaseSchemaGenerator:
def get_schema(self, routes: typing.List[BaseRoute]) -> dict:
raise NotImplementedError() # pragma: no cover
def get_endpoints(
self, routes: typing.List[BaseRoute]
) -> typing.List[EndpointInfo]:
"""
Given the routes, yields the following information:
- path
eg: /users/
- http_method
one of 'get', 'post', 'put', 'patch', 'delete', 'options'
- func
method ready to extract the docstring
"""
endpoints_info: list = []
for route in routes:
if isinstance(route, Mount):
path = self._remove_converter(route.path)
routes = route.routes or []
sub_endpoints = [
EndpointInfo(
path="".join((path, sub_endpoint.path)),
http_method=sub_endpoint.http_method,
func=sub_endpoint.func,
)
for sub_endpoint in self.get_endpoints(routes)
]
endpoints_info.extend(sub_endpoints)
elif not isinstance(route, Route) or not route.include_in_schema:
continue
elif inspect.isfunction(route.endpoint) or inspect.ismethod(route.endpoint):
path = self._remove_converter(route.path)
for method in route.methods or ["GET"]:
if method == "HEAD":
continue
endpoints_info.append(
EndpointInfo(path, method.lower(), route.endpoint)
)
else:
path = self._remove_converter(route.path)
for method in ["get", "post", "put", "patch", "delete", "options"]:
if not hasattr(route.endpoint, method):
continue
func = getattr(route.endpoint, method)
endpoints_info.append(EndpointInfo(path, method.lower(), func))
return endpoints_info
def _remove_converter(self, path: str) -> str:
"""
Remove the converter from the path.
For example, a route like this:
Route("/users/{id:int}", endpoint=get_user, methods=["GET"])
Should be represented as `/users/{id}` in the OpenAPI schema.
"""
return re.sub(r":\w+}", "}", path)
def parse_docstring(self, func_or_method: typing.Callable) -> dict:
"""
Given a function, parse the docstring as YAML and return a dictionary of info.
"""
docstring = func_or_method.__doc__
if not docstring:
return {}
assert yaml is not None, "`pyyaml` must be installed to use parse_docstring."
# We support having regular docstrings before the schema
# definition. Here we return just the schema part from
# the docstring.
docstring = docstring.split("---")[-1]
parsed = yaml.safe_load(docstring)
if not isinstance(parsed, dict):
# A regular docstring (not yaml formatted) can return
# a simple string here, which wouldn't follow the schema.
return {}
return parsed
def OpenAPIResponse(self, request: Request) -> Response:
routes = request.app.routes
schema = self.get_schema(routes=routes)
return OpenAPIResponse(schema)
class SchemaGenerator(BaseSchemaGenerator):
def __init__(self, base_schema: dict) -> None:
self.base_schema = base_schema
def get_schema(self, routes: typing.List[BaseRoute]) -> dict:
schema = dict(self.base_schema)
schema.setdefault("paths", {})
endpoints_info = self.get_endpoints(routes)
for endpoint in endpoints_info:
parsed = self.parse_docstring(endpoint.func)
if not parsed:
continue
if endpoint.path not in schema["paths"]:
schema["paths"][endpoint.path] = {}
schema["paths"][endpoint.path][endpoint.http_method] = parsed
return schema
| 4,952 | Python | 32.693877 | 88 | 0.576131 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/wsgi.py | import io
import math
import sys
import typing
import warnings
import anyio
from starlette.types import Receive, Scope, Send
warnings.warn(
"starlette.middleware.wsgi is deprecated and will be removed in a future release. "
"Please refer to https://github.com/abersheeran/a2wsgi as a replacement.",
DeprecationWarning,
)
def build_environ(scope: Scope, body: bytes) -> dict:
"""
Builds a scope and request body into a WSGI environ object.
"""
environ = {
"REQUEST_METHOD": scope["method"],
"SCRIPT_NAME": scope.get("root_path", "").encode("utf8").decode("latin1"),
"PATH_INFO": scope["path"].encode("utf8").decode("latin1"),
"QUERY_STRING": scope["query_string"].decode("ascii"),
"SERVER_PROTOCOL": f"HTTP/{scope['http_version']}",
"wsgi.version": (1, 0),
"wsgi.url_scheme": scope.get("scheme", "http"),
"wsgi.input": io.BytesIO(body),
"wsgi.errors": sys.stdout,
"wsgi.multithread": True,
"wsgi.multiprocess": True,
"wsgi.run_once": False,
}
# Get server name and port - required in WSGI, not in ASGI
server = scope.get("server") or ("localhost", 80)
environ["SERVER_NAME"] = server[0]
environ["SERVER_PORT"] = server[1]
# Get client IP address
if scope.get("client"):
environ["REMOTE_ADDR"] = scope["client"][0]
# Go through headers and make them into environ entries
for name, value in scope.get("headers", []):
name = name.decode("latin1")
if name == "content-length":
corrected_name = "CONTENT_LENGTH"
elif name == "content-type":
corrected_name = "CONTENT_TYPE"
else:
corrected_name = f"HTTP_{name}".upper().replace("-", "_")
# HTTPbis say only ASCII chars are allowed in headers, but we latin1 just in
# case
value = value.decode("latin1")
if corrected_name in environ:
value = environ[corrected_name] + "," + value
environ[corrected_name] = value
return environ
class WSGIMiddleware:
def __init__(self, app: typing.Callable) -> None:
self.app = app
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
assert scope["type"] == "http"
responder = WSGIResponder(self.app, scope)
await responder(receive, send)
class WSGIResponder:
def __init__(self, app: typing.Callable, scope: Scope) -> None:
self.app = app
self.scope = scope
self.status = None
self.response_headers = None
self.stream_send, self.stream_receive = anyio.create_memory_object_stream(
math.inf
)
self.response_started = False
self.exc_info: typing.Any = None
async def __call__(self, receive: Receive, send: Send) -> None:
body = b""
more_body = True
while more_body:
message = await receive()
body += message.get("body", b"")
more_body = message.get("more_body", False)
environ = build_environ(self.scope, body)
async with anyio.create_task_group() as task_group:
task_group.start_soon(self.sender, send)
async with self.stream_send:
await anyio.to_thread.run_sync(self.wsgi, environ, self.start_response)
if self.exc_info is not None:
raise self.exc_info[0].with_traceback(self.exc_info[1], self.exc_info[2])
async def sender(self, send: Send) -> None:
async with self.stream_receive:
async for message in self.stream_receive:
await send(message)
def start_response(
self,
status: str,
response_headers: typing.List[typing.Tuple[str, str]],
exc_info: typing.Any = None,
) -> None:
self.exc_info = exc_info
if not self.response_started:
self.response_started = True
status_code_string, _ = status.split(" ", 1)
status_code = int(status_code_string)
headers = [
(name.strip().encode("ascii").lower(), value.strip().encode("ascii"))
for name, value in response_headers
]
anyio.from_thread.run(
self.stream_send.send,
{
"type": "http.response.start",
"status": status_code,
"headers": headers,
},
)
def wsgi(self, environ: dict, start_response: typing.Callable) -> None:
for chunk in self.app(environ, start_response):
anyio.from_thread.run(
self.stream_send.send,
{"type": "http.response.body", "body": chunk, "more_body": True},
)
anyio.from_thread.run(
self.stream_send.send, {"type": "http.response.body", "body": b""}
)
| 4,906 | Python | 33.801418 | 87 | 0.572564 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/gzip.py | import gzip
import io
import typing
from starlette.datastructures import Headers, MutableHeaders
from starlette.types import ASGIApp, Message, Receive, Scope, Send
class GZipMiddleware:
def __init__(
self, app: ASGIApp, minimum_size: int = 500, compresslevel: int = 9
) -> None:
self.app = app
self.minimum_size = minimum_size
self.compresslevel = compresslevel
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] == "http":
headers = Headers(scope=scope)
if "gzip" in headers.get("Accept-Encoding", ""):
responder = GZipResponder(
self.app, self.minimum_size, compresslevel=self.compresslevel
)
await responder(scope, receive, send)
return
await self.app(scope, receive, send)
class GZipResponder:
def __init__(self, app: ASGIApp, minimum_size: int, compresslevel: int = 9) -> None:
self.app = app
self.minimum_size = minimum_size
self.send: Send = unattached_send
self.initial_message: Message = {}
self.started = False
self.content_encoding_set = False
self.gzip_buffer = io.BytesIO()
self.gzip_file = gzip.GzipFile(
mode="wb", fileobj=self.gzip_buffer, compresslevel=compresslevel
)
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
self.send = send
await self.app(scope, receive, self.send_with_gzip)
async def send_with_gzip(self, message: Message) -> None:
message_type = message["type"]
if message_type == "http.response.start":
# Don't send the initial message until we've determined how to
# modify the outgoing headers correctly.
self.initial_message = message
headers = Headers(raw=self.initial_message["headers"])
self.content_encoding_set = "content-encoding" in headers
elif message_type == "http.response.body" and self.content_encoding_set:
if not self.started:
self.started = True
await self.send(self.initial_message)
await self.send(message)
elif message_type == "http.response.body" and not self.started:
self.started = True
body = message.get("body", b"")
more_body = message.get("more_body", False)
if len(body) < self.minimum_size and not more_body:
# Don't apply GZip to small outgoing responses.
await self.send(self.initial_message)
await self.send(message)
elif not more_body:
# Standard GZip response.
self.gzip_file.write(body)
self.gzip_file.close()
body = self.gzip_buffer.getvalue()
headers = MutableHeaders(raw=self.initial_message["headers"])
headers["Content-Encoding"] = "gzip"
headers["Content-Length"] = str(len(body))
headers.add_vary_header("Accept-Encoding")
message["body"] = body
await self.send(self.initial_message)
await self.send(message)
else:
# Initial body in streaming GZip response.
headers = MutableHeaders(raw=self.initial_message["headers"])
headers["Content-Encoding"] = "gzip"
headers.add_vary_header("Accept-Encoding")
del headers["Content-Length"]
self.gzip_file.write(body)
message["body"] = self.gzip_buffer.getvalue()
self.gzip_buffer.seek(0)
self.gzip_buffer.truncate()
await self.send(self.initial_message)
await self.send(message)
elif message_type == "http.response.body":
# Remaining body in streaming GZip response.
body = message.get("body", b"")
more_body = message.get("more_body", False)
self.gzip_file.write(body)
if not more_body:
self.gzip_file.close()
message["body"] = self.gzip_buffer.getvalue()
self.gzip_buffer.seek(0)
self.gzip_buffer.truncate()
await self.send(message)
async def unattached_send(message: Message) -> typing.NoReturn:
raise RuntimeError("send awaitable not set") # pragma: no cover
| 4,507 | Python | 38.543859 | 88 | 0.576437 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/exceptions.py | import typing
from starlette._utils import is_async_callable
from starlette.concurrency import run_in_threadpool
from starlette.exceptions import HTTPException, WebSocketException
from starlette.requests import Request
from starlette.responses import PlainTextResponse, Response
from starlette.types import ASGIApp, Message, Receive, Scope, Send
from starlette.websockets import WebSocket
class ExceptionMiddleware:
def __init__(
self,
app: ASGIApp,
handlers: typing.Optional[
typing.Mapping[typing.Any, typing.Callable[[Request, Exception], Response]]
] = None,
debug: bool = False,
) -> None:
self.app = app
self.debug = debug # TODO: We ought to handle 404 cases if debug is set.
self._status_handlers: typing.Dict[int, typing.Callable] = {}
self._exception_handlers: typing.Dict[
typing.Type[Exception], typing.Callable
] = {
HTTPException: self.http_exception,
WebSocketException: self.websocket_exception,
}
if handlers is not None:
for key, value in handlers.items():
self.add_exception_handler(key, value)
def add_exception_handler(
self,
exc_class_or_status_code: typing.Union[int, typing.Type[Exception]],
handler: typing.Callable[[Request, Exception], Response],
) -> None:
if isinstance(exc_class_or_status_code, int):
self._status_handlers[exc_class_or_status_code] = handler
else:
assert issubclass(exc_class_or_status_code, Exception)
self._exception_handlers[exc_class_or_status_code] = handler
def _lookup_exception_handler(
self, exc: Exception
) -> typing.Optional[typing.Callable]:
for cls in type(exc).__mro__:
if cls in self._exception_handlers:
return self._exception_handlers[cls]
return None
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] not in ("http", "websocket"):
await self.app(scope, receive, send)
return
response_started = False
async def sender(message: Message) -> None:
nonlocal response_started
if message["type"] == "http.response.start":
response_started = True
await send(message)
try:
await self.app(scope, receive, sender)
except Exception as exc:
handler = None
if isinstance(exc, HTTPException):
handler = self._status_handlers.get(exc.status_code)
if handler is None:
handler = self._lookup_exception_handler(exc)
if handler is None:
raise exc
if response_started:
msg = "Caught handled exception, but response already started."
raise RuntimeError(msg) from exc
if scope["type"] == "http":
request = Request(scope, receive=receive)
if is_async_callable(handler):
response = await handler(request, exc)
else:
response = await run_in_threadpool(handler, request, exc)
await response(scope, receive, sender)
elif scope["type"] == "websocket":
websocket = WebSocket(scope, receive=receive, send=send)
if is_async_callable(handler):
await handler(websocket, exc)
else:
await run_in_threadpool(handler, websocket, exc)
def http_exception(self, request: Request, exc: HTTPException) -> Response:
if exc.status_code in {204, 304}:
return Response(status_code=exc.status_code, headers=exc.headers)
return PlainTextResponse(
exc.detail, status_code=exc.status_code, headers=exc.headers
)
async def websocket_exception(
self, websocket: WebSocket, exc: WebSocketException
) -> None:
await websocket.close(code=exc.code, reason=exc.reason)
| 4,128 | Python | 36.536363 | 87 | 0.601502 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/httpsredirect.py | from starlette.datastructures import URL
from starlette.responses import RedirectResponse
from starlette.types import ASGIApp, Receive, Scope, Send
class HTTPSRedirectMiddleware:
def __init__(self, app: ASGIApp) -> None:
self.app = app
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] in ("http", "websocket") and scope["scheme"] in ("http", "ws"):
url = URL(scope=scope)
redirect_scheme = {"http": "https", "ws": "wss"}[url.scheme]
netloc = url.hostname if url.port in (80, 443) else url.netloc
url = url.replace(scheme=redirect_scheme, netloc=netloc)
response = RedirectResponse(url, status_code=307)
await response(scope, receive, send)
else:
await self.app(scope, receive, send)
| 848 | Python | 41.449998 | 88 | 0.630896 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/base.py | import typing
import anyio
from starlette.background import BackgroundTask
from starlette.requests import Request
from starlette.responses import ContentStream, Response, StreamingResponse
from starlette.types import ASGIApp, Message, Receive, Scope, Send
RequestResponseEndpoint = typing.Callable[[Request], typing.Awaitable[Response]]
DispatchFunction = typing.Callable[
[Request, RequestResponseEndpoint], typing.Awaitable[Response]
]
T = typing.TypeVar("T")
class BaseHTTPMiddleware:
def __init__(
self, app: ASGIApp, dispatch: typing.Optional[DispatchFunction] = None
) -> None:
self.app = app
self.dispatch_func = self.dispatch if dispatch is None else dispatch
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] != "http":
await self.app(scope, receive, send)
return
response_sent = anyio.Event()
async def call_next(request: Request) -> Response:
app_exc: typing.Optional[Exception] = None
send_stream, recv_stream = anyio.create_memory_object_stream()
async def receive_or_disconnect() -> Message:
if response_sent.is_set():
return {"type": "http.disconnect"}
async with anyio.create_task_group() as task_group:
async def wrap(func: typing.Callable[[], typing.Awaitable[T]]) -> T:
result = await func()
task_group.cancel_scope.cancel()
return result
task_group.start_soon(wrap, response_sent.wait)
message = await wrap(request.receive)
if response_sent.is_set():
return {"type": "http.disconnect"}
return message
async def close_recv_stream_on_response_sent() -> None:
await response_sent.wait()
recv_stream.close()
async def send_no_error(message: Message) -> None:
try:
await send_stream.send(message)
except anyio.BrokenResourceError:
# recv_stream has been closed, i.e. response_sent has been set.
return
async def coro() -> None:
nonlocal app_exc
async with send_stream:
try:
await self.app(scope, receive_or_disconnect, send_no_error)
except Exception as exc:
app_exc = exc
task_group.start_soon(close_recv_stream_on_response_sent)
task_group.start_soon(coro)
try:
message = await recv_stream.receive()
info = message.get("info", None)
if message["type"] == "http.response.debug" and info is not None:
message = await recv_stream.receive()
except anyio.EndOfStream:
if app_exc is not None:
raise app_exc
raise RuntimeError("No response returned.")
assert message["type"] == "http.response.start"
async def body_stream() -> typing.AsyncGenerator[bytes, None]:
async with recv_stream:
async for message in recv_stream:
assert message["type"] == "http.response.body"
body = message.get("body", b"")
if body:
yield body
if app_exc is not None:
raise app_exc
response = _StreamingResponse(
status_code=message["status"], content=body_stream(), info=info
)
response.raw_headers = message["headers"]
return response
async with anyio.create_task_group() as task_group:
request = Request(scope, receive=receive)
response = await self.dispatch_func(request, call_next)
await response(scope, receive, send)
response_sent.set()
async def dispatch(
self, request: Request, call_next: RequestResponseEndpoint
) -> Response:
raise NotImplementedError() # pragma: no cover
class _StreamingResponse(StreamingResponse):
def __init__(
self,
content: ContentStream,
status_code: int = 200,
headers: typing.Optional[typing.Mapping[str, str]] = None,
media_type: typing.Optional[str] = None,
background: typing.Optional[BackgroundTask] = None,
info: typing.Optional[typing.Mapping[str, typing.Any]] = None,
) -> None:
self._info = info
super().__init__(content, status_code, headers, media_type, background)
async def stream_response(self, send: Send) -> None:
if self._info:
await send({"type": "http.response.debug", "info": self._info})
return await super().stream_response(send)
| 5,010 | Python | 36.118518 | 88 | 0.561876 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/cors.py | import functools
import re
import typing
from starlette.datastructures import Headers, MutableHeaders
from starlette.responses import PlainTextResponse, Response
from starlette.types import ASGIApp, Message, Receive, Scope, Send
ALL_METHODS = ("DELETE", "GET", "HEAD", "OPTIONS", "PATCH", "POST", "PUT")
SAFELISTED_HEADERS = {"Accept", "Accept-Language", "Content-Language", "Content-Type"}
class CORSMiddleware:
def __init__(
self,
app: ASGIApp,
allow_origins: typing.Sequence[str] = (),
allow_methods: typing.Sequence[str] = ("GET",),
allow_headers: typing.Sequence[str] = (),
allow_credentials: bool = False,
allow_origin_regex: typing.Optional[str] = None,
expose_headers: typing.Sequence[str] = (),
max_age: int = 600,
) -> None:
if "*" in allow_methods:
allow_methods = ALL_METHODS
compiled_allow_origin_regex = None
if allow_origin_regex is not None:
compiled_allow_origin_regex = re.compile(allow_origin_regex)
allow_all_origins = "*" in allow_origins
allow_all_headers = "*" in allow_headers
preflight_explicit_allow_origin = not allow_all_origins or allow_credentials
simple_headers = {}
if allow_all_origins:
simple_headers["Access-Control-Allow-Origin"] = "*"
if allow_credentials:
simple_headers["Access-Control-Allow-Credentials"] = "true"
if expose_headers:
simple_headers["Access-Control-Expose-Headers"] = ", ".join(expose_headers)
preflight_headers = {}
if preflight_explicit_allow_origin:
# The origin value will be set in preflight_response() if it is allowed.
preflight_headers["Vary"] = "Origin"
else:
preflight_headers["Access-Control-Allow-Origin"] = "*"
preflight_headers.update(
{
"Access-Control-Allow-Methods": ", ".join(allow_methods),
"Access-Control-Max-Age": str(max_age),
}
)
allow_headers = sorted(SAFELISTED_HEADERS | set(allow_headers))
if allow_headers and not allow_all_headers:
preflight_headers["Access-Control-Allow-Headers"] = ", ".join(allow_headers)
if allow_credentials:
preflight_headers["Access-Control-Allow-Credentials"] = "true"
self.app = app
self.allow_origins = allow_origins
self.allow_methods = allow_methods
self.allow_headers = [h.lower() for h in allow_headers]
self.allow_all_origins = allow_all_origins
self.allow_all_headers = allow_all_headers
self.preflight_explicit_allow_origin = preflight_explicit_allow_origin
self.allow_origin_regex = compiled_allow_origin_regex
self.simple_headers = simple_headers
self.preflight_headers = preflight_headers
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] != "http": # pragma: no cover
await self.app(scope, receive, send)
return
method = scope["method"]
headers = Headers(scope=scope)
origin = headers.get("origin")
if origin is None:
await self.app(scope, receive, send)
return
if method == "OPTIONS" and "access-control-request-method" in headers:
response = self.preflight_response(request_headers=headers)
await response(scope, receive, send)
return
await self.simple_response(scope, receive, send, request_headers=headers)
def is_allowed_origin(self, origin: str) -> bool:
if self.allow_all_origins:
return True
if self.allow_origin_regex is not None and self.allow_origin_regex.fullmatch(
origin
):
return True
return origin in self.allow_origins
def preflight_response(self, request_headers: Headers) -> Response:
requested_origin = request_headers["origin"]
requested_method = request_headers["access-control-request-method"]
requested_headers = request_headers.get("access-control-request-headers")
headers = dict(self.preflight_headers)
failures = []
if self.is_allowed_origin(origin=requested_origin):
if self.preflight_explicit_allow_origin:
# The "else" case is already accounted for in self.preflight_headers
# and the value would be "*".
headers["Access-Control-Allow-Origin"] = requested_origin
else:
failures.append("origin")
if requested_method not in self.allow_methods:
failures.append("method")
# If we allow all headers, then we have to mirror back any requested
# headers in the response.
if self.allow_all_headers and requested_headers is not None:
headers["Access-Control-Allow-Headers"] = requested_headers
elif requested_headers is not None:
for header in [h.lower() for h in requested_headers.split(",")]:
if header.strip() not in self.allow_headers:
failures.append("headers")
break
# We don't strictly need to use 400 responses here, since its up to
# the browser to enforce the CORS policy, but its more informative
# if we do.
if failures:
failure_text = "Disallowed CORS " + ", ".join(failures)
return PlainTextResponse(failure_text, status_code=400, headers=headers)
return PlainTextResponse("OK", status_code=200, headers=headers)
async def simple_response(
self, scope: Scope, receive: Receive, send: Send, request_headers: Headers
) -> None:
send = functools.partial(self.send, send=send, request_headers=request_headers)
await self.app(scope, receive, send)
async def send(
self, message: Message, send: Send, request_headers: Headers
) -> None:
if message["type"] != "http.response.start":
await send(message)
return
message.setdefault("headers", [])
headers = MutableHeaders(scope=message)
headers.update(self.simple_headers)
origin = request_headers["Origin"]
has_cookie = "cookie" in request_headers
# If request includes any cookie headers, then we must respond
# with the specific origin instead of '*'.
if self.allow_all_origins and has_cookie:
self.allow_explicit_origin(headers, origin)
# If we only allow specific origins, then we have to mirror back
# the Origin header in the response.
elif not self.allow_all_origins and self.is_allowed_origin(origin=origin):
self.allow_explicit_origin(headers, origin)
await send(message)
@staticmethod
def allow_explicit_origin(headers: MutableHeaders, origin: str) -> None:
headers["Access-Control-Allow-Origin"] = origin
headers.add_vary_header("Origin")
| 7,076 | Python | 38.758427 | 88 | 0.623657 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/__init__.py | import typing
class Middleware:
def __init__(self, cls: type, **options: typing.Any) -> None:
self.cls = cls
self.options = options
def __iter__(self) -> typing.Iterator:
as_tuple = (self.cls, self.options)
return iter(as_tuple)
def __repr__(self) -> str:
class_name = self.__class__.__name__
option_strings = [f"{key}={value!r}" for key, value in self.options.items()]
args_repr = ", ".join([self.cls.__name__] + option_strings)
return f"{class_name}({args_repr})"
| 546 | Python | 29.388887 | 84 | 0.564103 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/errors.py | import html
import inspect
import traceback
import typing
from starlette._utils import is_async_callable
from starlette.concurrency import run_in_threadpool
from starlette.requests import Request
from starlette.responses import HTMLResponse, PlainTextResponse, Response
from starlette.types import ASGIApp, Message, Receive, Scope, Send
STYLES = """
p {
color: #211c1c;
}
.traceback-container {
border: 1px solid #038BB8;
}
.traceback-title {
background-color: #038BB8;
color: lemonchiffon;
padding: 12px;
font-size: 20px;
margin-top: 0px;
}
.frame-line {
padding-left: 10px;
font-family: monospace;
}
.frame-filename {
font-family: monospace;
}
.center-line {
background-color: #038BB8;
color: #f9f6e1;
padding: 5px 0px 5px 5px;
}
.lineno {
margin-right: 5px;
}
.frame-title {
font-weight: unset;
padding: 10px 10px 10px 10px;
background-color: #E4F4FD;
margin-right: 10px;
color: #191f21;
font-size: 17px;
border: 1px solid #c7dce8;
}
.collapse-btn {
float: right;
padding: 0px 5px 1px 5px;
border: solid 1px #96aebb;
cursor: pointer;
}
.collapsed {
display: none;
}
.source-code {
font-family: courier;
font-size: small;
padding-bottom: 10px;
}
"""
JS = """
<script type="text/javascript">
function collapse(element){
const frameId = element.getAttribute("data-frame-id");
const frame = document.getElementById(frameId);
if (frame.classList.contains("collapsed")){
element.innerHTML = "‒";
frame.classList.remove("collapsed");
} else {
element.innerHTML = "+";
frame.classList.add("collapsed");
}
}
</script>
"""
TEMPLATE = """
<html>
<head>
<style type='text/css'>
{styles}
</style>
<title>Starlette Debugger</title>
</head>
<body>
<h1>500 Server Error</h1>
<h2>{error}</h2>
<div class="traceback-container">
<p class="traceback-title">Traceback</p>
<div>{exc_html}</div>
</div>
{js}
</body>
</html>
"""
FRAME_TEMPLATE = """
<div>
<p class="frame-title">File <span class="frame-filename">{frame_filename}</span>,
line <i>{frame_lineno}</i>,
in <b>{frame_name}</b>
<span class="collapse-btn" data-frame-id="{frame_filename}-{frame_lineno}" onclick="collapse(this)">{collapse_button}</span>
</p>
<div id="{frame_filename}-{frame_lineno}" class="source-code {collapsed}">{code_context}</div>
</div>
""" # noqa: E501
LINE = """
<p><span class="frame-line">
<span class="lineno">{lineno}.</span> {line}</span></p>
"""
CENTER_LINE = """
<p class="center-line"><span class="frame-line center-line">
<span class="lineno">{lineno}.</span> {line}</span></p>
"""
class ServerErrorMiddleware:
"""
Handles returning 500 responses when a server error occurs.
If 'debug' is set, then traceback responses will be returned,
otherwise the designated 'handler' will be called.
This middleware class should generally be used to wrap *everything*
else up, so that unhandled exceptions anywhere in the stack
always result in an appropriate 500 response.
"""
def __init__(
self,
app: ASGIApp,
handler: typing.Optional[typing.Callable] = None,
debug: bool = False,
) -> None:
self.app = app
self.handler = handler
self.debug = debug
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] != "http":
await self.app(scope, receive, send)
return
response_started = False
async def _send(message: Message) -> None:
nonlocal response_started, send
if message["type"] == "http.response.start":
response_started = True
await send(message)
try:
await self.app(scope, receive, _send)
except Exception as exc:
request = Request(scope)
if self.debug:
# In debug mode, return traceback responses.
response = self.debug_response(request, exc)
elif self.handler is None:
# Use our default 500 error handler.
response = self.error_response(request, exc)
else:
# Use an installed 500 error handler.
if is_async_callable(self.handler):
response = await self.handler(request, exc)
else:
response = await run_in_threadpool(self.handler, request, exc)
if not response_started:
await response(scope, receive, send)
# We always continue to raise the exception.
# This allows servers to log the error, or allows test clients
# to optionally raise the error within the test case.
raise exc
def format_line(
self, index: int, line: str, frame_lineno: int, frame_index: int
) -> str:
values = {
# HTML escape - line could contain < or >
"line": html.escape(line).replace(" ", " "),
"lineno": (frame_lineno - frame_index) + index,
}
if index != frame_index:
return LINE.format(**values)
return CENTER_LINE.format(**values)
def generate_frame_html(self, frame: inspect.FrameInfo, is_collapsed: bool) -> str:
code_context = "".join(
self.format_line(
index, line, frame.lineno, frame.index # type: ignore[arg-type]
)
for index, line in enumerate(frame.code_context or [])
)
values = {
# HTML escape - filename could contain < or >, especially if it's a virtual
# file e.g. <stdin> in the REPL
"frame_filename": html.escape(frame.filename),
"frame_lineno": frame.lineno,
# HTML escape - if you try very hard it's possible to name a function with <
# or >
"frame_name": html.escape(frame.function),
"code_context": code_context,
"collapsed": "collapsed" if is_collapsed else "",
"collapse_button": "+" if is_collapsed else "‒",
}
return FRAME_TEMPLATE.format(**values)
def generate_html(self, exc: Exception, limit: int = 7) -> str:
traceback_obj = traceback.TracebackException.from_exception(
exc, capture_locals=True
)
exc_html = ""
is_collapsed = False
exc_traceback = exc.__traceback__
if exc_traceback is not None:
frames = inspect.getinnerframes(exc_traceback, limit)
for frame in reversed(frames):
exc_html += self.generate_frame_html(frame, is_collapsed)
is_collapsed = True
# escape error class and text
error = (
f"{html.escape(traceback_obj.exc_type.__name__)}: "
f"{html.escape(str(traceback_obj))}"
)
return TEMPLATE.format(styles=STYLES, js=JS, error=error, exc_html=exc_html)
def generate_plain_text(self, exc: Exception) -> str:
return "".join(traceback.format_exception(type(exc), exc, exc.__traceback__))
def debug_response(self, request: Request, exc: Exception) -> Response:
accept = request.headers.get("accept", "")
if "text/html" in accept:
content = self.generate_html(exc)
return HTMLResponse(content, status_code=500)
content = self.generate_plain_text(exc)
return PlainTextResponse(content, status_code=500)
def error_response(self, request: Request, exc: Exception) -> Response:
return PlainTextResponse("Internal Server Error", status_code=500)
| 7,833 | Python | 29.48249 | 128 | 0.591217 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/authentication.py | import typing
from starlette.authentication import (
AuthCredentials,
AuthenticationBackend,
AuthenticationError,
UnauthenticatedUser,
)
from starlette.requests import HTTPConnection
from starlette.responses import PlainTextResponse, Response
from starlette.types import ASGIApp, Receive, Scope, Send
class AuthenticationMiddleware:
def __init__(
self,
app: ASGIApp,
backend: AuthenticationBackend,
on_error: typing.Optional[
typing.Callable[[HTTPConnection, AuthenticationError], Response]
] = None,
) -> None:
self.app = app
self.backend = backend
self.on_error: typing.Callable[
[HTTPConnection, AuthenticationError], Response
] = (on_error if on_error is not None else self.default_on_error)
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] not in ["http", "websocket"]:
await self.app(scope, receive, send)
return
conn = HTTPConnection(scope)
try:
auth_result = await self.backend.authenticate(conn)
except AuthenticationError as exc:
response = self.on_error(conn, exc)
if scope["type"] == "websocket":
await send({"type": "websocket.close", "code": 1000})
else:
await response(scope, receive, send)
return
if auth_result is None:
auth_result = AuthCredentials(), UnauthenticatedUser()
scope["auth"], scope["user"] = auth_result
await self.app(scope, receive, send)
@staticmethod
def default_on_error(conn: HTTPConnection, exc: Exception) -> Response:
return PlainTextResponse(str(exc), status_code=400)
| 1,787 | Python | 32.735848 | 81 | 0.628428 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/trustedhost.py | import typing
from starlette.datastructures import URL, Headers
from starlette.responses import PlainTextResponse, RedirectResponse, Response
from starlette.types import ASGIApp, Receive, Scope, Send
ENFORCE_DOMAIN_WILDCARD = "Domain wildcard patterns must be like '*.example.com'."
class TrustedHostMiddleware:
def __init__(
self,
app: ASGIApp,
allowed_hosts: typing.Optional[typing.Sequence[str]] = None,
www_redirect: bool = True,
) -> None:
if allowed_hosts is None:
allowed_hosts = ["*"]
for pattern in allowed_hosts:
assert "*" not in pattern[1:], ENFORCE_DOMAIN_WILDCARD
if pattern.startswith("*") and pattern != "*":
assert pattern.startswith("*."), ENFORCE_DOMAIN_WILDCARD
self.app = app
self.allowed_hosts = list(allowed_hosts)
self.allow_any = "*" in allowed_hosts
self.www_redirect = www_redirect
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if self.allow_any or scope["type"] not in (
"http",
"websocket",
): # pragma: no cover
await self.app(scope, receive, send)
return
headers = Headers(scope=scope)
host = headers.get("host", "").split(":")[0]
is_valid_host = False
found_www_redirect = False
for pattern in self.allowed_hosts:
if host == pattern or (
pattern.startswith("*") and host.endswith(pattern[1:])
):
is_valid_host = True
break
elif "www." + host == pattern:
found_www_redirect = True
if is_valid_host:
await self.app(scope, receive, send)
else:
response: Response
if found_www_redirect and self.www_redirect:
url = URL(scope=scope)
redirect_url = url.replace(netloc="www." + url.netloc)
response = RedirectResponse(url=str(redirect_url))
else:
response = PlainTextResponse("Invalid host header", status_code=400)
await response(scope, receive, send)
| 2,207 | Python | 35.196721 | 84 | 0.57227 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/starlette/middleware/sessions.py | import json
import sys
import typing
from base64 import b64decode, b64encode
import itsdangerous
from itsdangerous.exc import BadSignature
from starlette.datastructures import MutableHeaders, Secret
from starlette.requests import HTTPConnection
from starlette.types import ASGIApp, Message, Receive, Scope, Send
if sys.version_info >= (3, 8): # pragma: no cover
from typing import Literal
else: # pragma: no cover
from typing_extensions import Literal
class SessionMiddleware:
def __init__(
self,
app: ASGIApp,
secret_key: typing.Union[str, Secret],
session_cookie: str = "session",
max_age: typing.Optional[int] = 14 * 24 * 60 * 60, # 14 days, in seconds
path: str = "/",
same_site: Literal["lax", "strict", "none"] = "lax",
https_only: bool = False,
) -> None:
self.app = app
self.signer = itsdangerous.TimestampSigner(str(secret_key))
self.session_cookie = session_cookie
self.max_age = max_age
self.path = path
self.security_flags = "httponly; samesite=" + same_site
if https_only: # Secure flag can be used with HTTPS only
self.security_flags += "; secure"
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] not in ("http", "websocket"): # pragma: no cover
await self.app(scope, receive, send)
return
connection = HTTPConnection(scope)
initial_session_was_empty = True
if self.session_cookie in connection.cookies:
data = connection.cookies[self.session_cookie].encode("utf-8")
try:
data = self.signer.unsign(data, max_age=self.max_age)
scope["session"] = json.loads(b64decode(data))
initial_session_was_empty = False
except BadSignature:
scope["session"] = {}
else:
scope["session"] = {}
async def send_wrapper(message: Message) -> None:
if message["type"] == "http.response.start":
if scope["session"]:
# We have session data to persist.
data = b64encode(json.dumps(scope["session"]).encode("utf-8"))
data = self.signer.sign(data)
headers = MutableHeaders(scope=message)
header_value = "{session_cookie}={data}; path={path}; {max_age}{security_flags}".format( # noqa E501
session_cookie=self.session_cookie,
data=data.decode("utf-8"),
path=self.path,
max_age=f"Max-Age={self.max_age}; " if self.max_age else "",
security_flags=self.security_flags,
)
headers.append("Set-Cookie", header_value)
elif not initial_session_was_empty:
# The session has been cleared.
headers = MutableHeaders(scope=message)
header_value = "{session_cookie}={data}; path={path}; {expires}{security_flags}".format( # noqa E501
session_cookie=self.session_cookie,
data="null",
path=self.path,
expires="expires=Thu, 01 Jan 1970 00:00:00 GMT; ",
security_flags=self.security_flags,
)
headers.append("Set-Cookie", header_value)
await send(message)
await self.app(scope, receive, send_wrapper)
| 3,612 | Python | 40.528735 | 121 | 0.555925 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/jmespath-0.10.0.dist-info/DESCRIPTION.rst | JMESPath
========
.. image:: https://badges.gitter.im/Join Chat.svg
:target: https://gitter.im/jmespath/chat
.. image:: https://travis-ci.org/jmespath/jmespath.py.svg?branch=develop
:target: https://travis-ci.org/jmespath/jmespath.py
.. image:: https://codecov.io/github/jmespath/jmespath.py/coverage.svg?branch=develop
:target: https://codecov.io/github/jmespath/jmespath.py?branch=develop
JMESPath (pronounced "james path") allows you to declaratively specify how to
extract elements from a JSON document.
For example, given this document::
{"foo": {"bar": "baz"}}
The jmespath expression ``foo.bar`` will return "baz".
JMESPath also supports:
Referencing elements in a list. Given the data::
{"foo": {"bar": ["one", "two"]}}
The expression: ``foo.bar[0]`` will return "one".
You can also reference all the items in a list using the ``*``
syntax::
{"foo": {"bar": [{"name": "one"}, {"name": "two"}]}}
The expression: ``foo.bar[*].name`` will return ["one", "two"].
Negative indexing is also supported (-1 refers to the last element
in the list). Given the data above, the expression
``foo.bar[-1].name`` will return "two".
The ``*`` can also be used for hash types::
{"foo": {"bar": {"name": "one"}, "baz": {"name": "two"}}}
The expression: ``foo.*.name`` will return ["one", "two"].
Installation
============
You can install JMESPath from pypi with:
.. code:: bash
pip install jmespath
API
===
The ``jmespath.py`` library has two functions
that operate on python data structures. You can use ``search``
and give it the jmespath expression and the data:
.. code:: python
>>> import jmespath
>>> path = jmespath.search('foo.bar', {'foo': {'bar': 'baz'}})
'baz'
Similar to the ``re`` module, you can use the ``compile`` function
to compile the JMESPath expression and use this parsed expression
to perform repeated searches:
.. code:: python
>>> import jmespath
>>> expression = jmespath.compile('foo.bar')
>>> expression.search({'foo': {'bar': 'baz'}})
'baz'
>>> expression.search({'foo': {'bar': 'other'}})
'other'
This is useful if you're going to use the same jmespath expression to
search multiple documents. This avoids having to reparse the
JMESPath expression each time you search a new document.
Options
-------
You can provide an instance of ``jmespath.Options`` to control how
a JMESPath expression is evaluated. The most common scenario for
using an ``Options`` instance is if you want to have ordered output
of your dict keys. To do this you can use either of these options:
.. code:: python
>>> import jmespath
>>> jmespath.search('{a: a, b: b}',
... mydata,
... jmespath.Options(dict_cls=collections.OrderedDict))
>>> import jmespath
>>> parsed = jmespath.compile('{a: a, b: b}')
>>> parsed.search(mydata,
... jmespath.Options(dict_cls=collections.OrderedDict))
Custom Functions
~~~~~~~~~~~~~~~~
The JMESPath language has numerous
`built-in functions
<http://jmespath.org/specification.html#built-in-functions>`__, but it is
also possible to add your own custom functions. Keep in mind that
custom function support in jmespath.py is experimental and the API may
change based on feedback.
**If you have a custom function that you've found useful, consider submitting
it to jmespath.site and propose that it be added to the JMESPath language.**
You can submit proposals
`here <https://github.com/jmespath/jmespath.site/issues>`__.
To create custom functions:
* Create a subclass of ``jmespath.functions.Functions``.
* Create a method with the name ``_func_<your function name>``.
* Apply the ``jmespath.functions.signature`` decorator that indicates
the expected types of the function arguments.
* Provide an instance of your subclass in a ``jmespath.Options`` object.
Below are a few examples:
.. code:: python
import jmespath
from jmespath import functions
# 1. Create a subclass of functions.Functions.
# The function.Functions base class has logic
# that introspects all of its methods and automatically
# registers your custom functions in its function table.
class CustomFunctions(functions.Functions):
# 2 and 3. Create a function that starts with _func_
# and decorate it with @signature which indicates its
# expected types.
# In this example, we're creating a jmespath function
# called "unique_letters" that accepts a single argument
# with an expected type "string".
@functions.signature({'types': ['string']})
def _func_unique_letters(self, s):
# Given a string s, return a sorted
# string of unique letters: 'ccbbadd' -> 'abcd'
return ''.join(sorted(set(s)))
# Here's another example. This is creating
# a jmespath function called "my_add" that expects
# two arguments, both of which should be of type number.
@functions.signature({'types': ['number']}, {'types': ['number']})
def _func_my_add(self, x, y):
return x + y
# 4. Provide an instance of your subclass in a Options object.
options = jmespath.Options(custom_functions=CustomFunctions())
# Provide this value to jmespath.search:
# This will print 3
print(
jmespath.search(
'my_add(`1`, `2`)', {}, options=options)
)
# This will print "abcd"
print(
jmespath.search(
'foo.bar | unique_letters(@)',
{'foo': {'bar': 'ccbbadd'}},
options=options)
)
Again, if you come up with useful functions that you think make
sense in the JMESPath language (and make sense to implement in all
JMESPath libraries, not just python), please let us know at
`jmespath.site <https://github.com/jmespath/jmespath.site/issues>`__.
Specification
=============
If you'd like to learn more about the JMESPath language, you can check out
the `JMESPath tutorial <http://jmespath.org/tutorial.html>`__. Also check
out the `JMESPath examples page <http://jmespath.org/examples.html>`__ for
examples of more complex jmespath queries.
The grammar is specified using ABNF, as described in
`RFC4234 <http://www.ietf.org/rfc/rfc4234.txt>`_.
You can find the most up to date
`grammar for JMESPath here <http://jmespath.org/specification.html#grammar>`__.
You can read the full
`JMESPath specification here <http://jmespath.org/specification.html>`__.
Testing
=======
In addition to the unit tests for the jmespath modules,
there is a ``tests/compliance`` directory that contains
.json files with test cases. This allows other implementations
to verify they are producing the correct output. Each json
file is grouped by feature.
Discuss
=======
Join us on our `Gitter channel <https://gitter.im/jmespath/chat>`__
if you want to chat or if you have any questions.
| 6,925 | reStructuredText | 29.782222 | 85 | 0.674513 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/attrs-20.1.0.dist-info/AUTHORS.rst | Credits
=======
``attrs`` is written and maintained by `Hynek Schlawack <https://hynek.me/>`_.
The development is kindly supported by `Variomedia AG <https://www.variomedia.de/>`_.
A full list of contributors can be found in `GitHub's overview <https://github.com/python-attrs/attrs/graphs/contributors>`_.
It’s the spiritual successor of `characteristic <https://characteristic.readthedocs.io/>`_ and aspires to fix some of it clunkiness and unfortunate decisions.
Both were inspired by Twisted’s `FancyEqMixin <https://twistedmatrix.com/documents/current/api/twisted.python.util.FancyEqMixin.html>`_ but both are implemented using class decorators because `subclassing is bad for you <https://www.youtube.com/watch?v=3MNVP9-hglc>`_, m’kay?
| 746 | reStructuredText | 61.249995 | 275 | 0.766756 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/filepost.py | from __future__ import absolute_import
import binascii
import codecs
import os
from io import BytesIO
from .fields import RequestField
from .packages import six
from .packages.six import b
writer = codecs.lookup("utf-8")[3]
def choose_boundary():
"""
Our embarrassingly-simple replacement for mimetools.choose_boundary.
"""
boundary = binascii.hexlify(os.urandom(16))
if not six.PY2:
boundary = boundary.decode("ascii")
return boundary
def iter_field_objects(fields):
"""
Iterate over fields.
Supports list of (k, v) tuples and dicts, and lists of
:class:`~urllib3.fields.RequestField`.
"""
if isinstance(fields, dict):
i = six.iteritems(fields)
else:
i = iter(fields)
for field in i:
if isinstance(field, RequestField):
yield field
else:
yield RequestField.from_tuples(*field)
def iter_fields(fields):
"""
.. deprecated:: 1.6
Iterate over fields.
The addition of :class:`~urllib3.fields.RequestField` makes this function
obsolete. Instead, use :func:`iter_field_objects`, which returns
:class:`~urllib3.fields.RequestField` objects.
Supports list of (k, v) tuples and dicts.
"""
if isinstance(fields, dict):
return ((k, v) for k, v in six.iteritems(fields))
return ((k, v) for k, v in fields)
def encode_multipart_formdata(fields, boundary=None):
"""
Encode a dictionary of ``fields`` using the multipart/form-data MIME format.
:param fields:
Dictionary of fields or list of (key, :class:`~urllib3.fields.RequestField`).
:param boundary:
If not specified, then a random boundary will be generated using
:func:`urllib3.filepost.choose_boundary`.
"""
body = BytesIO()
if boundary is None:
boundary = choose_boundary()
for field in iter_field_objects(fields):
body.write(b("--%s\r\n" % (boundary)))
writer(body).write(field.render_headers())
data = field.data
if isinstance(data, int):
data = str(data) # Backwards compatibility
if isinstance(data, six.text_type):
writer(body).write(data)
else:
body.write(data)
body.write(b"\r\n")
body.write(b("--%s--\r\n" % (boundary)))
content_type = str("multipart/form-data; boundary=%s" % boundary)
return body.getvalue(), content_type
| 2,440 | Python | 23.656565 | 85 | 0.631557 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/_version.py | # This file is protected via CODEOWNERS
__version__ = "1.26.16"
| 64 | Python | 20.66666 | 39 | 0.6875 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/connection.py | from __future__ import absolute_import
import datetime
import logging
import os
import re
import socket
import warnings
from socket import error as SocketError
from socket import timeout as SocketTimeout
from .packages import six
from .packages.six.moves.http_client import HTTPConnection as _HTTPConnection
from .packages.six.moves.http_client import HTTPException # noqa: F401
from .util.proxy import create_proxy_ssl_context
try: # Compiled with SSL?
import ssl
BaseSSLError = ssl.SSLError
except (ImportError, AttributeError): # Platform-specific: No SSL.
ssl = None
class BaseSSLError(BaseException):
pass
try:
# Python 3: not a no-op, we're adding this to the namespace so it can be imported.
ConnectionError = ConnectionError
except NameError:
# Python 2
class ConnectionError(Exception):
pass
try: # Python 3:
# Not a no-op, we're adding this to the namespace so it can be imported.
BrokenPipeError = BrokenPipeError
except NameError: # Python 2:
class BrokenPipeError(Exception):
pass
from ._collections import HTTPHeaderDict # noqa (historical, removed in v2)
from ._version import __version__
from .exceptions import (
ConnectTimeoutError,
NewConnectionError,
SubjectAltNameWarning,
SystemTimeWarning,
)
from .util import SKIP_HEADER, SKIPPABLE_HEADERS, connection
from .util.ssl_ import (
assert_fingerprint,
create_urllib3_context,
is_ipaddress,
resolve_cert_reqs,
resolve_ssl_version,
ssl_wrap_socket,
)
from .util.ssl_match_hostname import CertificateError, match_hostname
log = logging.getLogger(__name__)
port_by_scheme = {"http": 80, "https": 443}
# When it comes time to update this value as a part of regular maintenance
# (ie test_recent_date is failing) update it to ~6 months before the current date.
RECENT_DATE = datetime.date(2022, 1, 1)
_CONTAINS_CONTROL_CHAR_RE = re.compile(r"[^-!#$%&'*+.^_`|~0-9a-zA-Z]")
class HTTPConnection(_HTTPConnection, object):
"""
Based on :class:`http.client.HTTPConnection` but provides an extra constructor
backwards-compatibility layer between older and newer Pythons.
Additional keyword parameters are used to configure attributes of the connection.
Accepted parameters include:
- ``strict``: See the documentation on :class:`urllib3.connectionpool.HTTPConnectionPool`
- ``source_address``: Set the source address for the current connection.
- ``socket_options``: Set specific options on the underlying socket. If not specified, then
defaults are loaded from ``HTTPConnection.default_socket_options`` which includes disabling
Nagle's algorithm (sets TCP_NODELAY to 1) unless the connection is behind a proxy.
For example, if you wish to enable TCP Keep Alive in addition to the defaults,
you might pass:
.. code-block:: python
HTTPConnection.default_socket_options + [
(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1),
]
Or you may want to disable the defaults by passing an empty list (e.g., ``[]``).
"""
default_port = port_by_scheme["http"]
#: Disable Nagle's algorithm by default.
#: ``[(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)]``
default_socket_options = [(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)]
#: Whether this connection verifies the host's certificate.
is_verified = False
#: Whether this proxy connection (if used) verifies the proxy host's
#: certificate.
proxy_is_verified = None
def __init__(self, *args, **kw):
if not six.PY2:
kw.pop("strict", None)
# Pre-set source_address.
self.source_address = kw.get("source_address")
#: The socket options provided by the user. If no options are
#: provided, we use the default options.
self.socket_options = kw.pop("socket_options", self.default_socket_options)
# Proxy options provided by the user.
self.proxy = kw.pop("proxy", None)
self.proxy_config = kw.pop("proxy_config", None)
_HTTPConnection.__init__(self, *args, **kw)
@property
def host(self):
"""
Getter method to remove any trailing dots that indicate the hostname is an FQDN.
In general, SSL certificates don't include the trailing dot indicating a
fully-qualified domain name, and thus, they don't validate properly when
checked against a domain name that includes the dot. In addition, some
servers may not expect to receive the trailing dot when provided.
However, the hostname with trailing dot is critical to DNS resolution; doing a
lookup with the trailing dot will properly only resolve the appropriate FQDN,
whereas a lookup without a trailing dot will search the system's search domain
list. Thus, it's important to keep the original host around for use only in
those cases where it's appropriate (i.e., when doing DNS lookup to establish the
actual TCP connection across which we're going to send HTTP requests).
"""
return self._dns_host.rstrip(".")
@host.setter
def host(self, value):
"""
Setter for the `host` property.
We assume that only urllib3 uses the _dns_host attribute; httplib itself
only uses `host`, and it seems reasonable that other libraries follow suit.
"""
self._dns_host = value
def _new_conn(self):
"""Establish a socket connection and set nodelay settings on it.
:return: New socket connection.
"""
extra_kw = {}
if self.source_address:
extra_kw["source_address"] = self.source_address
if self.socket_options:
extra_kw["socket_options"] = self.socket_options
try:
conn = connection.create_connection(
(self._dns_host, self.port), self.timeout, **extra_kw
)
except SocketTimeout:
raise ConnectTimeoutError(
self,
"Connection to %s timed out. (connect timeout=%s)"
% (self.host, self.timeout),
)
except SocketError as e:
raise NewConnectionError(
self, "Failed to establish a new connection: %s" % e
)
return conn
def _is_using_tunnel(self):
# Google App Engine's httplib does not define _tunnel_host
return getattr(self, "_tunnel_host", None)
def _prepare_conn(self, conn):
self.sock = conn
if self._is_using_tunnel():
# TODO: Fix tunnel so it doesn't depend on self.sock state.
self._tunnel()
# Mark this connection as not reusable
self.auto_open = 0
def connect(self):
conn = self._new_conn()
self._prepare_conn(conn)
def putrequest(self, method, url, *args, **kwargs):
""" """
# Empty docstring because the indentation of CPython's implementation
# is broken but we don't want this method in our documentation.
match = _CONTAINS_CONTROL_CHAR_RE.search(method)
if match:
raise ValueError(
"Method cannot contain non-token characters %r (found at least %r)"
% (method, match.group())
)
return _HTTPConnection.putrequest(self, method, url, *args, **kwargs)
def putheader(self, header, *values):
""" """
if not any(isinstance(v, str) and v == SKIP_HEADER for v in values):
_HTTPConnection.putheader(self, header, *values)
elif six.ensure_str(header.lower()) not in SKIPPABLE_HEADERS:
raise ValueError(
"urllib3.util.SKIP_HEADER only supports '%s'"
% ("', '".join(map(str.title, sorted(SKIPPABLE_HEADERS))),)
)
def request(self, method, url, body=None, headers=None):
# Update the inner socket's timeout value to send the request.
# This only triggers if the connection is re-used.
if getattr(self, "sock", None) is not None:
self.sock.settimeout(self.timeout)
if headers is None:
headers = {}
else:
# Avoid modifying the headers passed into .request()
headers = headers.copy()
if "user-agent" not in (six.ensure_str(k.lower()) for k in headers):
headers["User-Agent"] = _get_default_user_agent()
super(HTTPConnection, self).request(method, url, body=body, headers=headers)
def request_chunked(self, method, url, body=None, headers=None):
"""
Alternative to the common request method, which sends the
body with chunked encoding and not as one block
"""
headers = headers or {}
header_keys = set([six.ensure_str(k.lower()) for k in headers])
skip_accept_encoding = "accept-encoding" in header_keys
skip_host = "host" in header_keys
self.putrequest(
method, url, skip_accept_encoding=skip_accept_encoding, skip_host=skip_host
)
if "user-agent" not in header_keys:
self.putheader("User-Agent", _get_default_user_agent())
for header, value in headers.items():
self.putheader(header, value)
if "transfer-encoding" not in header_keys:
self.putheader("Transfer-Encoding", "chunked")
self.endheaders()
if body is not None:
stringish_types = six.string_types + (bytes,)
if isinstance(body, stringish_types):
body = (body,)
for chunk in body:
if not chunk:
continue
if not isinstance(chunk, bytes):
chunk = chunk.encode("utf8")
len_str = hex(len(chunk))[2:]
to_send = bytearray(len_str.encode())
to_send += b"\r\n"
to_send += chunk
to_send += b"\r\n"
self.send(to_send)
# After the if clause, to always have a closed body
self.send(b"0\r\n\r\n")
class HTTPSConnection(HTTPConnection):
"""
Many of the parameters to this constructor are passed to the underlying SSL
socket by means of :py:func:`urllib3.util.ssl_wrap_socket`.
"""
default_port = port_by_scheme["https"]
cert_reqs = None
ca_certs = None
ca_cert_dir = None
ca_cert_data = None
ssl_version = None
assert_fingerprint = None
tls_in_tls_required = False
def __init__(
self,
host,
port=None,
key_file=None,
cert_file=None,
key_password=None,
strict=None,
timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
ssl_context=None,
server_hostname=None,
**kw
):
HTTPConnection.__init__(self, host, port, strict=strict, timeout=timeout, **kw)
self.key_file = key_file
self.cert_file = cert_file
self.key_password = key_password
self.ssl_context = ssl_context
self.server_hostname = server_hostname
# Required property for Google AppEngine 1.9.0 which otherwise causes
# HTTPS requests to go out as HTTP. (See Issue #356)
self._protocol = "https"
def set_cert(
self,
key_file=None,
cert_file=None,
cert_reqs=None,
key_password=None,
ca_certs=None,
assert_hostname=None,
assert_fingerprint=None,
ca_cert_dir=None,
ca_cert_data=None,
):
"""
This method should only be called once, before the connection is used.
"""
# If cert_reqs is not provided we'll assume CERT_REQUIRED unless we also
# have an SSLContext object in which case we'll use its verify_mode.
if cert_reqs is None:
if self.ssl_context is not None:
cert_reqs = self.ssl_context.verify_mode
else:
cert_reqs = resolve_cert_reqs(None)
self.key_file = key_file
self.cert_file = cert_file
self.cert_reqs = cert_reqs
self.key_password = key_password
self.assert_hostname = assert_hostname
self.assert_fingerprint = assert_fingerprint
self.ca_certs = ca_certs and os.path.expanduser(ca_certs)
self.ca_cert_dir = ca_cert_dir and os.path.expanduser(ca_cert_dir)
self.ca_cert_data = ca_cert_data
def connect(self):
# Add certificate verification
self.sock = conn = self._new_conn()
hostname = self.host
tls_in_tls = False
if self._is_using_tunnel():
if self.tls_in_tls_required:
self.sock = conn = self._connect_tls_proxy(hostname, conn)
tls_in_tls = True
# Calls self._set_hostport(), so self.host is
# self._tunnel_host below.
self._tunnel()
# Mark this connection as not reusable
self.auto_open = 0
# Override the host with the one we're requesting data from.
hostname = self._tunnel_host
server_hostname = hostname
if self.server_hostname is not None:
server_hostname = self.server_hostname
is_time_off = datetime.date.today() < RECENT_DATE
if is_time_off:
warnings.warn(
(
"System time is way off (before {0}). This will probably "
"lead to SSL verification errors"
).format(RECENT_DATE),
SystemTimeWarning,
)
# Wrap socket using verification with the root certs in
# trusted_root_certs
default_ssl_context = False
if self.ssl_context is None:
default_ssl_context = True
self.ssl_context = create_urllib3_context(
ssl_version=resolve_ssl_version(self.ssl_version),
cert_reqs=resolve_cert_reqs(self.cert_reqs),
)
context = self.ssl_context
context.verify_mode = resolve_cert_reqs(self.cert_reqs)
# Try to load OS default certs if none are given.
# Works well on Windows (requires Python3.4+)
if (
not self.ca_certs
and not self.ca_cert_dir
and not self.ca_cert_data
and default_ssl_context
and hasattr(context, "load_default_certs")
):
context.load_default_certs()
self.sock = ssl_wrap_socket(
sock=conn,
keyfile=self.key_file,
certfile=self.cert_file,
key_password=self.key_password,
ca_certs=self.ca_certs,
ca_cert_dir=self.ca_cert_dir,
ca_cert_data=self.ca_cert_data,
server_hostname=server_hostname,
ssl_context=context,
tls_in_tls=tls_in_tls,
)
# If we're using all defaults and the connection
# is TLSv1 or TLSv1.1 we throw a DeprecationWarning
# for the host.
if (
default_ssl_context
and self.ssl_version is None
and hasattr(self.sock, "version")
and self.sock.version() in {"TLSv1", "TLSv1.1"}
):
warnings.warn(
"Negotiating TLSv1/TLSv1.1 by default is deprecated "
"and will be disabled in urllib3 v2.0.0. Connecting to "
"'%s' with '%s' can be enabled by explicitly opting-in "
"with 'ssl_version'" % (self.host, self.sock.version()),
DeprecationWarning,
)
if self.assert_fingerprint:
assert_fingerprint(
self.sock.getpeercert(binary_form=True), self.assert_fingerprint
)
elif (
context.verify_mode != ssl.CERT_NONE
and not getattr(context, "check_hostname", False)
and self.assert_hostname is not False
):
# While urllib3 attempts to always turn off hostname matching from
# the TLS library, this cannot always be done. So we check whether
# the TLS Library still thinks it's matching hostnames.
cert = self.sock.getpeercert()
if not cert.get("subjectAltName", ()):
warnings.warn(
(
"Certificate for {0} has no `subjectAltName`, falling back to check for a "
"`commonName` for now. This feature is being removed by major browsers and "
"deprecated by RFC 2818. (See https://github.com/urllib3/urllib3/issues/497 "
"for details.)".format(hostname)
),
SubjectAltNameWarning,
)
_match_hostname(cert, self.assert_hostname or server_hostname)
self.is_verified = (
context.verify_mode == ssl.CERT_REQUIRED
or self.assert_fingerprint is not None
)
def _connect_tls_proxy(self, hostname, conn):
"""
Establish a TLS connection to the proxy using the provided SSL context.
"""
proxy_config = self.proxy_config
ssl_context = proxy_config.ssl_context
if ssl_context:
# If the user provided a proxy context, we assume CA and client
# certificates have already been set
return ssl_wrap_socket(
sock=conn,
server_hostname=hostname,
ssl_context=ssl_context,
)
ssl_context = create_proxy_ssl_context(
self.ssl_version,
self.cert_reqs,
self.ca_certs,
self.ca_cert_dir,
self.ca_cert_data,
)
# If no cert was provided, use only the default options for server
# certificate validation
socket = ssl_wrap_socket(
sock=conn,
ca_certs=self.ca_certs,
ca_cert_dir=self.ca_cert_dir,
ca_cert_data=self.ca_cert_data,
server_hostname=hostname,
ssl_context=ssl_context,
)
if ssl_context.verify_mode != ssl.CERT_NONE and not getattr(
ssl_context, "check_hostname", False
):
# While urllib3 attempts to always turn off hostname matching from
# the TLS library, this cannot always be done. So we check whether
# the TLS Library still thinks it's matching hostnames.
cert = socket.getpeercert()
if not cert.get("subjectAltName", ()):
warnings.warn(
(
"Certificate for {0} has no `subjectAltName`, falling back to check for a "
"`commonName` for now. This feature is being removed by major browsers and "
"deprecated by RFC 2818. (See https://github.com/urllib3/urllib3/issues/497 "
"for details.)".format(hostname)
),
SubjectAltNameWarning,
)
_match_hostname(cert, hostname)
self.proxy_is_verified = ssl_context.verify_mode == ssl.CERT_REQUIRED
return socket
def _match_hostname(cert, asserted_hostname):
# Our upstream implementation of ssl.match_hostname()
# only applies this normalization to IP addresses so it doesn't
# match DNS SANs so we do the same thing!
stripped_hostname = asserted_hostname.strip("u[]")
if is_ipaddress(stripped_hostname):
asserted_hostname = stripped_hostname
try:
match_hostname(cert, asserted_hostname)
except CertificateError as e:
log.warning(
"Certificate did not match expected hostname: %s. Certificate: %s",
asserted_hostname,
cert,
)
# Add cert to exception and reraise so client code can inspect
# the cert when catching the exception, if they want to
e._peer_cert = cert
raise
def _get_default_user_agent():
return "python-urllib3/%s" % __version__
class DummyConnection(object):
"""Used to detect a failed ConnectionCls import."""
pass
if not ssl:
HTTPSConnection = DummyConnection # noqa: F811
VerifiedHTTPSConnection = HTTPSConnection
| 20,300 | Python | 34.429319 | 101 | 0.597291 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/response.py | from __future__ import absolute_import
import io
import logging
import sys
import warnings
import zlib
from contextlib import contextmanager
from socket import error as SocketError
from socket import timeout as SocketTimeout
try:
try:
import brotlicffi as brotli
except ImportError:
import brotli
except ImportError:
brotli = None
from . import util
from ._collections import HTTPHeaderDict
from .connection import BaseSSLError, HTTPException
from .exceptions import (
BodyNotHttplibCompatible,
DecodeError,
HTTPError,
IncompleteRead,
InvalidChunkLength,
InvalidHeader,
ProtocolError,
ReadTimeoutError,
ResponseNotChunked,
SSLError,
)
from .packages import six
from .util.response import is_fp_closed, is_response_to_head
log = logging.getLogger(__name__)
class DeflateDecoder(object):
def __init__(self):
self._first_try = True
self._data = b""
self._obj = zlib.decompressobj()
def __getattr__(self, name):
return getattr(self._obj, name)
def decompress(self, data):
if not data:
return data
if not self._first_try:
return self._obj.decompress(data)
self._data += data
try:
decompressed = self._obj.decompress(data)
if decompressed:
self._first_try = False
self._data = None
return decompressed
except zlib.error:
self._first_try = False
self._obj = zlib.decompressobj(-zlib.MAX_WBITS)
try:
return self.decompress(self._data)
finally:
self._data = None
class GzipDecoderState(object):
FIRST_MEMBER = 0
OTHER_MEMBERS = 1
SWALLOW_DATA = 2
class GzipDecoder(object):
def __init__(self):
self._obj = zlib.decompressobj(16 + zlib.MAX_WBITS)
self._state = GzipDecoderState.FIRST_MEMBER
def __getattr__(self, name):
return getattr(self._obj, name)
def decompress(self, data):
ret = bytearray()
if self._state == GzipDecoderState.SWALLOW_DATA or not data:
return bytes(ret)
while True:
try:
ret += self._obj.decompress(data)
except zlib.error:
previous_state = self._state
# Ignore data after the first error
self._state = GzipDecoderState.SWALLOW_DATA
if previous_state == GzipDecoderState.OTHER_MEMBERS:
# Allow trailing garbage acceptable in other gzip clients
return bytes(ret)
raise
data = self._obj.unused_data
if not data:
return bytes(ret)
self._state = GzipDecoderState.OTHER_MEMBERS
self._obj = zlib.decompressobj(16 + zlib.MAX_WBITS)
if brotli is not None:
class BrotliDecoder(object):
# Supports both 'brotlipy' and 'Brotli' packages
# since they share an import name. The top branches
# are for 'brotlipy' and bottom branches for 'Brotli'
def __init__(self):
self._obj = brotli.Decompressor()
if hasattr(self._obj, "decompress"):
self.decompress = self._obj.decompress
else:
self.decompress = self._obj.process
def flush(self):
if hasattr(self._obj, "flush"):
return self._obj.flush()
return b""
class MultiDecoder(object):
"""
From RFC7231:
If one or more encodings have been applied to a representation, the
sender that applied the encodings MUST generate a Content-Encoding
header field that lists the content codings in the order in which
they were applied.
"""
def __init__(self, modes):
self._decoders = [_get_decoder(m.strip()) for m in modes.split(",")]
def flush(self):
return self._decoders[0].flush()
def decompress(self, data):
for d in reversed(self._decoders):
data = d.decompress(data)
return data
def _get_decoder(mode):
if "," in mode:
return MultiDecoder(mode)
if mode == "gzip":
return GzipDecoder()
if brotli is not None and mode == "br":
return BrotliDecoder()
return DeflateDecoder()
class HTTPResponse(io.IOBase):
"""
HTTP Response container.
Backwards-compatible with :class:`http.client.HTTPResponse` but the response ``body`` is
loaded and decoded on-demand when the ``data`` property is accessed. This
class is also compatible with the Python standard library's :mod:`io`
module, and can hence be treated as a readable object in the context of that
framework.
Extra parameters for behaviour not present in :class:`http.client.HTTPResponse`:
:param preload_content:
If True, the response's body will be preloaded during construction.
:param decode_content:
If True, will attempt to decode the body based on the
'content-encoding' header.
:param original_response:
When this HTTPResponse wrapper is generated from an :class:`http.client.HTTPResponse`
object, it's convenient to include the original for debug purposes. It's
otherwise unused.
:param retries:
The retries contains the last :class:`~urllib3.util.retry.Retry` that
was used during the request.
:param enforce_content_length:
Enforce content length checking. Body returned by server must match
value of Content-Length header, if present. Otherwise, raise error.
"""
CONTENT_DECODERS = ["gzip", "deflate"]
if brotli is not None:
CONTENT_DECODERS += ["br"]
REDIRECT_STATUSES = [301, 302, 303, 307, 308]
def __init__(
self,
body="",
headers=None,
status=0,
version=0,
reason=None,
strict=0,
preload_content=True,
decode_content=True,
original_response=None,
pool=None,
connection=None,
msg=None,
retries=None,
enforce_content_length=False,
request_method=None,
request_url=None,
auto_close=True,
):
if isinstance(headers, HTTPHeaderDict):
self.headers = headers
else:
self.headers = HTTPHeaderDict(headers)
self.status = status
self.version = version
self.reason = reason
self.strict = strict
self.decode_content = decode_content
self.retries = retries
self.enforce_content_length = enforce_content_length
self.auto_close = auto_close
self._decoder = None
self._body = None
self._fp = None
self._original_response = original_response
self._fp_bytes_read = 0
self.msg = msg
self._request_url = request_url
if body and isinstance(body, (six.string_types, bytes)):
self._body = body
self._pool = pool
self._connection = connection
if hasattr(body, "read"):
self._fp = body
# Are we using the chunked-style of transfer encoding?
self.chunked = False
self.chunk_left = None
tr_enc = self.headers.get("transfer-encoding", "").lower()
# Don't incur the penalty of creating a list and then discarding it
encodings = (enc.strip() for enc in tr_enc.split(","))
if "chunked" in encodings:
self.chunked = True
# Determine length of response
self.length_remaining = self._init_length(request_method)
# If requested, preload the body.
if preload_content and not self._body:
self._body = self.read(decode_content=decode_content)
def get_redirect_location(self):
"""
Should we redirect and where to?
:returns: Truthy redirect location string if we got a redirect status
code and valid location. ``None`` if redirect status and no
location. ``False`` if not a redirect status code.
"""
if self.status in self.REDIRECT_STATUSES:
return self.headers.get("location")
return False
def release_conn(self):
if not self._pool or not self._connection:
return
self._pool._put_conn(self._connection)
self._connection = None
def drain_conn(self):
"""
Read and discard any remaining HTTP response data in the response connection.
Unread data in the HTTPResponse connection blocks the connection from being released back to the pool.
"""
try:
self.read()
except (HTTPError, SocketError, BaseSSLError, HTTPException):
pass
@property
def data(self):
# For backwards-compat with earlier urllib3 0.4 and earlier.
if self._body:
return self._body
if self._fp:
return self.read(cache_content=True)
@property
def connection(self):
return self._connection
def isclosed(self):
return is_fp_closed(self._fp)
def tell(self):
"""
Obtain the number of bytes pulled over the wire so far. May differ from
the amount of content returned by :meth:``urllib3.response.HTTPResponse.read``
if bytes are encoded on the wire (e.g, compressed).
"""
return self._fp_bytes_read
def _init_length(self, request_method):
"""
Set initial length value for Response content if available.
"""
length = self.headers.get("content-length")
if length is not None:
if self.chunked:
# This Response will fail with an IncompleteRead if it can't be
# received as chunked. This method falls back to attempt reading
# the response before raising an exception.
log.warning(
"Received response with both Content-Length and "
"Transfer-Encoding set. This is expressly forbidden "
"by RFC 7230 sec 3.3.2. Ignoring Content-Length and "
"attempting to process response as Transfer-Encoding: "
"chunked."
)
return None
try:
# RFC 7230 section 3.3.2 specifies multiple content lengths can
# be sent in a single Content-Length header
# (e.g. Content-Length: 42, 42). This line ensures the values
# are all valid ints and that as long as the `set` length is 1,
# all values are the same. Otherwise, the header is invalid.
lengths = set([int(val) for val in length.split(",")])
if len(lengths) > 1:
raise InvalidHeader(
"Content-Length contained multiple "
"unmatching values (%s)" % length
)
length = lengths.pop()
except ValueError:
length = None
else:
if length < 0:
length = None
# Convert status to int for comparison
# In some cases, httplib returns a status of "_UNKNOWN"
try:
status = int(self.status)
except ValueError:
status = 0
# Check for responses that shouldn't include a body
if status in (204, 304) or 100 <= status < 200 or request_method == "HEAD":
length = 0
return length
def _init_decoder(self):
"""
Set-up the _decoder attribute if necessary.
"""
# Note: content-encoding value should be case-insensitive, per RFC 7230
# Section 3.2
content_encoding = self.headers.get("content-encoding", "").lower()
if self._decoder is None:
if content_encoding in self.CONTENT_DECODERS:
self._decoder = _get_decoder(content_encoding)
elif "," in content_encoding:
encodings = [
e.strip()
for e in content_encoding.split(",")
if e.strip() in self.CONTENT_DECODERS
]
if len(encodings):
self._decoder = _get_decoder(content_encoding)
DECODER_ERROR_CLASSES = (IOError, zlib.error)
if brotli is not None:
DECODER_ERROR_CLASSES += (brotli.error,)
def _decode(self, data, decode_content, flush_decoder):
"""
Decode the data passed in and potentially flush the decoder.
"""
if not decode_content:
return data
try:
if self._decoder:
data = self._decoder.decompress(data)
except self.DECODER_ERROR_CLASSES as e:
content_encoding = self.headers.get("content-encoding", "").lower()
raise DecodeError(
"Received response with content-encoding: %s, but "
"failed to decode it." % content_encoding,
e,
)
if flush_decoder:
data += self._flush_decoder()
return data
def _flush_decoder(self):
"""
Flushes the decoder. Should only be called if the decoder is actually
being used.
"""
if self._decoder:
buf = self._decoder.decompress(b"")
return buf + self._decoder.flush()
return b""
@contextmanager
def _error_catcher(self):
"""
Catch low-level python exceptions, instead re-raising urllib3
variants, so that low-level exceptions are not leaked in the
high-level api.
On exit, release the connection back to the pool.
"""
clean_exit = False
try:
try:
yield
except SocketTimeout:
# FIXME: Ideally we'd like to include the url in the ReadTimeoutError but
# there is yet no clean way to get at it from this context.
raise ReadTimeoutError(self._pool, None, "Read timed out.")
except BaseSSLError as e:
# FIXME: Is there a better way to differentiate between SSLErrors?
if "read operation timed out" not in str(e):
# SSL errors related to framing/MAC get wrapped and reraised here
raise SSLError(e)
raise ReadTimeoutError(self._pool, None, "Read timed out.")
except (HTTPException, SocketError) as e:
# This includes IncompleteRead.
raise ProtocolError("Connection broken: %r" % e, e)
# If no exception is thrown, we should avoid cleaning up
# unnecessarily.
clean_exit = True
finally:
# If we didn't terminate cleanly, we need to throw away our
# connection.
if not clean_exit:
# The response may not be closed but we're not going to use it
# anymore so close it now to ensure that the connection is
# released back to the pool.
if self._original_response:
self._original_response.close()
# Closing the response may not actually be sufficient to close
# everything, so if we have a hold of the connection close that
# too.
if self._connection:
self._connection.close()
# If we hold the original response but it's closed now, we should
# return the connection back to the pool.
if self._original_response and self._original_response.isclosed():
self.release_conn()
def _fp_read(self, amt):
"""
Read a response with the thought that reading the number of bytes
larger than can fit in a 32-bit int at a time via SSL in some
known cases leads to an overflow error that has to be prevented
if `amt` or `self.length_remaining` indicate that a problem may
happen.
The known cases:
* 3.8 <= CPython < 3.9.7 because of a bug
https://github.com/urllib3/urllib3/issues/2513#issuecomment-1152559900.
* urllib3 injected with pyOpenSSL-backed SSL-support.
* CPython < 3.10 only when `amt` does not fit 32-bit int.
"""
assert self._fp
c_int_max = 2 ** 31 - 1
if (
(
(amt and amt > c_int_max)
or (self.length_remaining and self.length_remaining > c_int_max)
)
and not util.IS_SECURETRANSPORT
and (util.IS_PYOPENSSL or sys.version_info < (3, 10))
):
buffer = io.BytesIO()
# Besides `max_chunk_amt` being a maximum chunk size, it
# affects memory overhead of reading a response by this
# method in CPython.
# `c_int_max` equal to 2 GiB - 1 byte is the actual maximum
# chunk size that does not lead to an overflow error, but
# 256 MiB is a compromise.
max_chunk_amt = 2 ** 28
while amt is None or amt != 0:
if amt is not None:
chunk_amt = min(amt, max_chunk_amt)
amt -= chunk_amt
else:
chunk_amt = max_chunk_amt
data = self._fp.read(chunk_amt)
if not data:
break
buffer.write(data)
del data # to reduce peak memory usage by `max_chunk_amt`.
return buffer.getvalue()
else:
# StringIO doesn't like amt=None
return self._fp.read(amt) if amt is not None else self._fp.read()
def read(self, amt=None, decode_content=None, cache_content=False):
"""
Similar to :meth:`http.client.HTTPResponse.read`, but with two additional
parameters: ``decode_content`` and ``cache_content``.
:param amt:
How much of the content to read. If specified, caching is skipped
because it doesn't make sense to cache partial content as the full
response.
:param decode_content:
If True, will attempt to decode the body based on the
'content-encoding' header.
:param cache_content:
If True, will save the returned data such that the same result is
returned despite of the state of the underlying file object. This
is useful if you want the ``.data`` property to continue working
after having ``.read()`` the file object. (Overridden if ``amt`` is
set.)
"""
self._init_decoder()
if decode_content is None:
decode_content = self.decode_content
if self._fp is None:
return
flush_decoder = False
fp_closed = getattr(self._fp, "closed", False)
with self._error_catcher():
data = self._fp_read(amt) if not fp_closed else b""
if amt is None:
flush_decoder = True
else:
cache_content = False
if (
amt != 0 and not data
): # Platform-specific: Buggy versions of Python.
# Close the connection when no data is returned
#
# This is redundant to what httplib/http.client _should_
# already do. However, versions of python released before
# December 15, 2012 (http://bugs.python.org/issue16298) do
# not properly close the connection in all cases. There is
# no harm in redundantly calling close.
self._fp.close()
flush_decoder = True
if self.enforce_content_length and self.length_remaining not in (
0,
None,
):
# This is an edge case that httplib failed to cover due
# to concerns of backward compatibility. We're
# addressing it here to make sure IncompleteRead is
# raised during streaming, so all calls with incorrect
# Content-Length are caught.
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
if data:
self._fp_bytes_read += len(data)
if self.length_remaining is not None:
self.length_remaining -= len(data)
data = self._decode(data, decode_content, flush_decoder)
if cache_content:
self._body = data
return data
def stream(self, amt=2 ** 16, decode_content=None):
"""
A generator wrapper for the read() method. A call will block until
``amt`` bytes have been read from the connection or until the
connection is closed.
:param amt:
How much of the content to read. The generator will return up to
much data per iteration, but may return less. This is particularly
likely when using compressed data. However, the empty string will
never be returned.
:param decode_content:
If True, will attempt to decode the body based on the
'content-encoding' header.
"""
if self.chunked and self.supports_chunked_reads():
for line in self.read_chunked(amt, decode_content=decode_content):
yield line
else:
while not is_fp_closed(self._fp):
data = self.read(amt=amt, decode_content=decode_content)
if data:
yield data
@classmethod
def from_httplib(ResponseCls, r, **response_kw):
"""
Given an :class:`http.client.HTTPResponse` instance ``r``, return a
corresponding :class:`urllib3.response.HTTPResponse` object.
Remaining parameters are passed to the HTTPResponse constructor, along
with ``original_response=r``.
"""
headers = r.msg
if not isinstance(headers, HTTPHeaderDict):
if six.PY2:
# Python 2.7
headers = HTTPHeaderDict.from_httplib(headers)
else:
headers = HTTPHeaderDict(headers.items())
# HTTPResponse objects in Python 3 don't have a .strict attribute
strict = getattr(r, "strict", 0)
resp = ResponseCls(
body=r,
headers=headers,
status=r.status,
version=r.version,
reason=r.reason,
strict=strict,
original_response=r,
**response_kw
)
return resp
# Backwards-compatibility methods for http.client.HTTPResponse
def getheaders(self):
warnings.warn(
"HTTPResponse.getheaders() is deprecated and will be removed "
"in urllib3 v2.1.0. Instead access HTTPResponse.headers directly.",
category=DeprecationWarning,
stacklevel=2,
)
return self.headers
def getheader(self, name, default=None):
warnings.warn(
"HTTPResponse.getheader() is deprecated and will be removed "
"in urllib3 v2.1.0. Instead use HTTPResponse.headers.get(name, default).",
category=DeprecationWarning,
stacklevel=2,
)
return self.headers.get(name, default)
# Backwards compatibility for http.cookiejar
def info(self):
return self.headers
# Overrides from io.IOBase
def close(self):
if not self.closed:
self._fp.close()
if self._connection:
self._connection.close()
if not self.auto_close:
io.IOBase.close(self)
@property
def closed(self):
if not self.auto_close:
return io.IOBase.closed.__get__(self)
elif self._fp is None:
return True
elif hasattr(self._fp, "isclosed"):
return self._fp.isclosed()
elif hasattr(self._fp, "closed"):
return self._fp.closed
else:
return True
def fileno(self):
if self._fp is None:
raise IOError("HTTPResponse has no file to get a fileno from")
elif hasattr(self._fp, "fileno"):
return self._fp.fileno()
else:
raise IOError(
"The file-like object this HTTPResponse is wrapped "
"around has no file descriptor"
)
def flush(self):
if (
self._fp is not None
and hasattr(self._fp, "flush")
and not getattr(self._fp, "closed", False)
):
return self._fp.flush()
def readable(self):
# This method is required for `io` module compatibility.
return True
def readinto(self, b):
# This method is required for `io` module compatibility.
temp = self.read(len(b))
if len(temp) == 0:
return 0
else:
b[: len(temp)] = temp
return len(temp)
def supports_chunked_reads(self):
"""
Checks if the underlying file-like object looks like a
:class:`http.client.HTTPResponse` object. We do this by testing for
the fp attribute. If it is present we assume it returns raw chunks as
processed by read_chunked().
"""
return hasattr(self._fp, "fp")
def _update_chunk_length(self):
# First, we'll figure out length of a chunk and then
# we'll try to read it from socket.
if self.chunk_left is not None:
return
line = self._fp.fp.readline()
line = line.split(b";", 1)[0]
try:
self.chunk_left = int(line, 16)
except ValueError:
# Invalid chunked protocol response, abort.
self.close()
raise InvalidChunkLength(self, line)
def _handle_chunk(self, amt):
returned_chunk = None
if amt is None:
chunk = self._fp._safe_read(self.chunk_left)
returned_chunk = chunk
self._fp._safe_read(2) # Toss the CRLF at the end of the chunk.
self.chunk_left = None
elif amt < self.chunk_left:
value = self._fp._safe_read(amt)
self.chunk_left = self.chunk_left - amt
returned_chunk = value
elif amt == self.chunk_left:
value = self._fp._safe_read(amt)
self._fp._safe_read(2) # Toss the CRLF at the end of the chunk.
self.chunk_left = None
returned_chunk = value
else: # amt > self.chunk_left
returned_chunk = self._fp._safe_read(self.chunk_left)
self._fp._safe_read(2) # Toss the CRLF at the end of the chunk.
self.chunk_left = None
return returned_chunk
def read_chunked(self, amt=None, decode_content=None):
"""
Similar to :meth:`HTTPResponse.read`, but with an additional
parameter: ``decode_content``.
:param amt:
How much of the content to read. If specified, caching is skipped
because it doesn't make sense to cache partial content as the full
response.
:param decode_content:
If True, will attempt to decode the body based on the
'content-encoding' header.
"""
self._init_decoder()
# FIXME: Rewrite this method and make it a class with a better structured logic.
if not self.chunked:
raise ResponseNotChunked(
"Response is not chunked. "
"Header 'transfer-encoding: chunked' is missing."
)
if not self.supports_chunked_reads():
raise BodyNotHttplibCompatible(
"Body should be http.client.HTTPResponse like. "
"It should have have an fp attribute which returns raw chunks."
)
with self._error_catcher():
# Don't bother reading the body of a HEAD request.
if self._original_response and is_response_to_head(self._original_response):
self._original_response.close()
return
# If a response is already read and closed
# then return immediately.
if self._fp.fp is None:
return
while True:
self._update_chunk_length()
if self.chunk_left == 0:
break
chunk = self._handle_chunk(amt)
decoded = self._decode(
chunk, decode_content=decode_content, flush_decoder=False
)
if decoded:
yield decoded
if decode_content:
# On CPython and PyPy, we should never need to flush the
# decoder. However, on Jython we *might* need to, so
# lets defensively do it anyway.
decoded = self._flush_decoder()
if decoded: # Platform-specific: Jython.
yield decoded
# Chunk content ends with \r\n: discard it.
while True:
line = self._fp.fp.readline()
if not line:
# Some sites may not end with '\r\n'.
break
if line == b"\r\n":
break
# We read everything; close the "file".
if self._original_response:
self._original_response.close()
def geturl(self):
"""
Returns the URL that was the source of this response.
If the request that generated this response redirected, this method
will return the final redirect location.
"""
if self.retries is not None and len(self.retries.history):
return self.retries.history[-1].redirect_location
else:
return self._request_url
def __iter__(self):
buffer = []
for chunk in self.stream(decode_content=True):
if b"\n" in chunk:
chunk = chunk.split(b"\n")
yield b"".join(buffer) + chunk[0] + b"\n"
for x in chunk[1:-1]:
yield x + b"\n"
if chunk[-1]:
buffer = [chunk[-1]]
else:
buffer = []
else:
buffer.append(chunk)
if buffer:
yield b"".join(buffer)
| 30,761 | Python | 33.72009 | 110 | 0.558694 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/exceptions.py | from __future__ import absolute_import
from .packages.six.moves.http_client import IncompleteRead as httplib_IncompleteRead
# Base Exceptions
class HTTPError(Exception):
"""Base exception used by this module."""
pass
class HTTPWarning(Warning):
"""Base warning used by this module."""
pass
class PoolError(HTTPError):
"""Base exception for errors caused within a pool."""
def __init__(self, pool, message):
self.pool = pool
HTTPError.__init__(self, "%s: %s" % (pool, message))
def __reduce__(self):
# For pickling purposes.
return self.__class__, (None, None)
class RequestError(PoolError):
"""Base exception for PoolErrors that have associated URLs."""
def __init__(self, pool, url, message):
self.url = url
PoolError.__init__(self, pool, message)
def __reduce__(self):
# For pickling purposes.
return self.__class__, (None, self.url, None)
class SSLError(HTTPError):
"""Raised when SSL certificate fails in an HTTPS connection."""
pass
class ProxyError(HTTPError):
"""Raised when the connection to a proxy fails."""
def __init__(self, message, error, *args):
super(ProxyError, self).__init__(message, error, *args)
self.original_error = error
class DecodeError(HTTPError):
"""Raised when automatic decoding based on Content-Type fails."""
pass
class ProtocolError(HTTPError):
"""Raised when something unexpected happens mid-request/response."""
pass
#: Renamed to ProtocolError but aliased for backwards compatibility.
ConnectionError = ProtocolError
# Leaf Exceptions
class MaxRetryError(RequestError):
"""Raised when the maximum number of retries is exceeded.
:param pool: The connection pool
:type pool: :class:`~urllib3.connectionpool.HTTPConnectionPool`
:param string url: The requested Url
:param exceptions.Exception reason: The underlying error
"""
def __init__(self, pool, url, reason=None):
self.reason = reason
message = "Max retries exceeded with url: %s (Caused by %r)" % (url, reason)
RequestError.__init__(self, pool, url, message)
class HostChangedError(RequestError):
"""Raised when an existing pool gets a request for a foreign host."""
def __init__(self, pool, url, retries=3):
message = "Tried to open a foreign host with url: %s" % url
RequestError.__init__(self, pool, url, message)
self.retries = retries
class TimeoutStateError(HTTPError):
"""Raised when passing an invalid state to a timeout"""
pass
class TimeoutError(HTTPError):
"""Raised when a socket timeout error occurs.
Catching this error will catch both :exc:`ReadTimeoutErrors
<ReadTimeoutError>` and :exc:`ConnectTimeoutErrors <ConnectTimeoutError>`.
"""
pass
class ReadTimeoutError(TimeoutError, RequestError):
"""Raised when a socket timeout occurs while receiving data from a server"""
pass
# This timeout error does not have a URL attached and needs to inherit from the
# base HTTPError
class ConnectTimeoutError(TimeoutError):
"""Raised when a socket timeout occurs while connecting to a server"""
pass
class NewConnectionError(ConnectTimeoutError, PoolError):
"""Raised when we fail to establish a new connection. Usually ECONNREFUSED."""
pass
class EmptyPoolError(PoolError):
"""Raised when a pool runs out of connections and no more are allowed."""
pass
class ClosedPoolError(PoolError):
"""Raised when a request enters a pool after the pool has been closed."""
pass
class LocationValueError(ValueError, HTTPError):
"""Raised when there is something wrong with a given URL input."""
pass
class LocationParseError(LocationValueError):
"""Raised when get_host or similar fails to parse the URL input."""
def __init__(self, location):
message = "Failed to parse: %s" % location
HTTPError.__init__(self, message)
self.location = location
class URLSchemeUnknown(LocationValueError):
"""Raised when a URL input has an unsupported scheme."""
def __init__(self, scheme):
message = "Not supported URL scheme %s" % scheme
super(URLSchemeUnknown, self).__init__(message)
self.scheme = scheme
class ResponseError(HTTPError):
"""Used as a container for an error reason supplied in a MaxRetryError."""
GENERIC_ERROR = "too many error responses"
SPECIFIC_ERROR = "too many {status_code} error responses"
class SecurityWarning(HTTPWarning):
"""Warned when performing security reducing actions"""
pass
class SubjectAltNameWarning(SecurityWarning):
"""Warned when connecting to a host with a certificate missing a SAN."""
pass
class InsecureRequestWarning(SecurityWarning):
"""Warned when making an unverified HTTPS request."""
pass
class SystemTimeWarning(SecurityWarning):
"""Warned when system time is suspected to be wrong"""
pass
class InsecurePlatformWarning(SecurityWarning):
"""Warned when certain TLS/SSL configuration is not available on a platform."""
pass
class SNIMissingWarning(HTTPWarning):
"""Warned when making a HTTPS request without SNI available."""
pass
class DependencyWarning(HTTPWarning):
"""
Warned when an attempt is made to import a module with missing optional
dependencies.
"""
pass
class ResponseNotChunked(ProtocolError, ValueError):
"""Response needs to be chunked in order to read it as chunks."""
pass
class BodyNotHttplibCompatible(HTTPError):
"""
Body should be :class:`http.client.HTTPResponse` like
(have an fp attribute which returns raw chunks) for read_chunked().
"""
pass
class IncompleteRead(HTTPError, httplib_IncompleteRead):
"""
Response length doesn't match expected Content-Length
Subclass of :class:`http.client.IncompleteRead` to allow int value
for ``partial`` to avoid creating large objects on streamed reads.
"""
def __init__(self, partial, expected):
super(IncompleteRead, self).__init__(partial, expected)
def __repr__(self):
return "IncompleteRead(%i bytes read, %i more expected)" % (
self.partial,
self.expected,
)
class InvalidChunkLength(HTTPError, httplib_IncompleteRead):
"""Invalid chunk length in a chunked response."""
def __init__(self, response, length):
super(InvalidChunkLength, self).__init__(
response.tell(), response.length_remaining
)
self.response = response
self.length = length
def __repr__(self):
return "InvalidChunkLength(got length %r, %i bytes read)" % (
self.length,
self.partial,
)
class InvalidHeader(HTTPError):
"""The header provided was somehow invalid."""
pass
class ProxySchemeUnknown(AssertionError, URLSchemeUnknown):
"""ProxyManager does not support the supplied scheme"""
# TODO(t-8ch): Stop inheriting from AssertionError in v2.0.
def __init__(self, scheme):
# 'localhost' is here because our URL parser parses
# localhost:8080 -> scheme=localhost, remove if we fix this.
if scheme == "localhost":
scheme = None
if scheme is None:
message = "Proxy URL had no scheme, should start with http:// or https://"
else:
message = (
"Proxy URL had unsupported scheme %s, should use http:// or https://"
% scheme
)
super(ProxySchemeUnknown, self).__init__(message)
class ProxySchemeUnsupported(ValueError):
"""Fetching HTTPS resources through HTTPS proxies is unsupported"""
pass
class HeaderParsingError(HTTPError):
"""Raised by assert_header_parsing, but we convert it to a log.warning statement."""
def __init__(self, defects, unparsed_data):
message = "%s, unparsed data: %r" % (defects or "Unknown", unparsed_data)
super(HeaderParsingError, self).__init__(message)
class UnrewindableBodyError(HTTPError):
"""urllib3 encountered an error when trying to rewind a body"""
pass
| 8,217 | Python | 24.364197 | 88 | 0.670439 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/poolmanager.py | from __future__ import absolute_import
import collections
import functools
import logging
from ._collections import RecentlyUsedContainer
from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, port_by_scheme
from .exceptions import (
LocationValueError,
MaxRetryError,
ProxySchemeUnknown,
ProxySchemeUnsupported,
URLSchemeUnknown,
)
from .packages import six
from .packages.six.moves.urllib.parse import urljoin
from .request import RequestMethods
from .util.proxy import connection_requires_http_tunnel
from .util.retry import Retry
from .util.url import parse_url
__all__ = ["PoolManager", "ProxyManager", "proxy_from_url"]
log = logging.getLogger(__name__)
SSL_KEYWORDS = (
"key_file",
"cert_file",
"cert_reqs",
"ca_certs",
"ssl_version",
"ca_cert_dir",
"ssl_context",
"key_password",
"server_hostname",
)
# All known keyword arguments that could be provided to the pool manager, its
# pools, or the underlying connections. This is used to construct a pool key.
_key_fields = (
"key_scheme", # str
"key_host", # str
"key_port", # int
"key_timeout", # int or float or Timeout
"key_retries", # int or Retry
"key_strict", # bool
"key_block", # bool
"key_source_address", # str
"key_key_file", # str
"key_key_password", # str
"key_cert_file", # str
"key_cert_reqs", # str
"key_ca_certs", # str
"key_ssl_version", # str
"key_ca_cert_dir", # str
"key_ssl_context", # instance of ssl.SSLContext or urllib3.util.ssl_.SSLContext
"key_maxsize", # int
"key_headers", # dict
"key__proxy", # parsed proxy url
"key__proxy_headers", # dict
"key__proxy_config", # class
"key_socket_options", # list of (level (int), optname (int), value (int or str)) tuples
"key__socks_options", # dict
"key_assert_hostname", # bool or string
"key_assert_fingerprint", # str
"key_server_hostname", # str
)
#: The namedtuple class used to construct keys for the connection pool.
#: All custom key schemes should include the fields in this key at a minimum.
PoolKey = collections.namedtuple("PoolKey", _key_fields)
_proxy_config_fields = ("ssl_context", "use_forwarding_for_https")
ProxyConfig = collections.namedtuple("ProxyConfig", _proxy_config_fields)
def _default_key_normalizer(key_class, request_context):
"""
Create a pool key out of a request context dictionary.
According to RFC 3986, both the scheme and host are case-insensitive.
Therefore, this function normalizes both before constructing the pool
key for an HTTPS request. If you wish to change this behaviour, provide
alternate callables to ``key_fn_by_scheme``.
:param key_class:
The class to use when constructing the key. This should be a namedtuple
with the ``scheme`` and ``host`` keys at a minimum.
:type key_class: namedtuple
:param request_context:
A dictionary-like object that contain the context for a request.
:type request_context: dict
:return: A namedtuple that can be used as a connection pool key.
:rtype: PoolKey
"""
# Since we mutate the dictionary, make a copy first
context = request_context.copy()
context["scheme"] = context["scheme"].lower()
context["host"] = context["host"].lower()
# These are both dictionaries and need to be transformed into frozensets
for key in ("headers", "_proxy_headers", "_socks_options"):
if key in context and context[key] is not None:
context[key] = frozenset(context[key].items())
# The socket_options key may be a list and needs to be transformed into a
# tuple.
socket_opts = context.get("socket_options")
if socket_opts is not None:
context["socket_options"] = tuple(socket_opts)
# Map the kwargs to the names in the namedtuple - this is necessary since
# namedtuples can't have fields starting with '_'.
for key in list(context.keys()):
context["key_" + key] = context.pop(key)
# Default to ``None`` for keys missing from the context
for field in key_class._fields:
if field not in context:
context[field] = None
return key_class(**context)
#: A dictionary that maps a scheme to a callable that creates a pool key.
#: This can be used to alter the way pool keys are constructed, if desired.
#: Each PoolManager makes a copy of this dictionary so they can be configured
#: globally here, or individually on the instance.
key_fn_by_scheme = {
"http": functools.partial(_default_key_normalizer, PoolKey),
"https": functools.partial(_default_key_normalizer, PoolKey),
}
pool_classes_by_scheme = {"http": HTTPConnectionPool, "https": HTTPSConnectionPool}
class PoolManager(RequestMethods):
"""
Allows for arbitrary requests while transparently keeping track of
necessary connection pools for you.
:param num_pools:
Number of connection pools to cache before discarding the least
recently used pool.
:param headers:
Headers to include with all requests, unless other headers are given
explicitly.
:param \\**connection_pool_kw:
Additional parameters are used to create fresh
:class:`urllib3.connectionpool.ConnectionPool` instances.
Example::
>>> manager = PoolManager(num_pools=2)
>>> r = manager.request('GET', 'http://google.com/')
>>> r = manager.request('GET', 'http://google.com/mail')
>>> r = manager.request('GET', 'http://yahoo.com/')
>>> len(manager.pools)
2
"""
proxy = None
proxy_config = None
def __init__(self, num_pools=10, headers=None, **connection_pool_kw):
RequestMethods.__init__(self, headers)
self.connection_pool_kw = connection_pool_kw
self.pools = RecentlyUsedContainer(num_pools)
# Locally set the pool classes and keys so other PoolManagers can
# override them.
self.pool_classes_by_scheme = pool_classes_by_scheme
self.key_fn_by_scheme = key_fn_by_scheme.copy()
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.clear()
# Return False to re-raise any potential exceptions
return False
def _new_pool(self, scheme, host, port, request_context=None):
"""
Create a new :class:`urllib3.connectionpool.ConnectionPool` based on host, port, scheme, and
any additional pool keyword arguments.
If ``request_context`` is provided, it is provided as keyword arguments
to the pool class used. This method is used to actually create the
connection pools handed out by :meth:`connection_from_url` and
companion methods. It is intended to be overridden for customization.
"""
pool_cls = self.pool_classes_by_scheme[scheme]
if request_context is None:
request_context = self.connection_pool_kw.copy()
# Although the context has everything necessary to create the pool,
# this function has historically only used the scheme, host, and port
# in the positional args. When an API change is acceptable these can
# be removed.
for key in ("scheme", "host", "port"):
request_context.pop(key, None)
if scheme == "http":
for kw in SSL_KEYWORDS:
request_context.pop(kw, None)
return pool_cls(host, port, **request_context)
def clear(self):
"""
Empty our store of pools and direct them all to close.
This will not affect in-flight connections, but they will not be
re-used after completion.
"""
self.pools.clear()
def connection_from_host(self, host, port=None, scheme="http", pool_kwargs=None):
"""
Get a :class:`urllib3.connectionpool.ConnectionPool` based on the host, port, and scheme.
If ``port`` isn't given, it will be derived from the ``scheme`` using
``urllib3.connectionpool.port_by_scheme``. If ``pool_kwargs`` is
provided, it is merged with the instance's ``connection_pool_kw``
variable and used to create the new connection pool, if one is
needed.
"""
if not host:
raise LocationValueError("No host specified.")
request_context = self._merge_pool_kwargs(pool_kwargs)
request_context["scheme"] = scheme or "http"
if not port:
port = port_by_scheme.get(request_context["scheme"].lower(), 80)
request_context["port"] = port
request_context["host"] = host
return self.connection_from_context(request_context)
def connection_from_context(self, request_context):
"""
Get a :class:`urllib3.connectionpool.ConnectionPool` based on the request context.
``request_context`` must at least contain the ``scheme`` key and its
value must be a key in ``key_fn_by_scheme`` instance variable.
"""
scheme = request_context["scheme"].lower()
pool_key_constructor = self.key_fn_by_scheme.get(scheme)
if not pool_key_constructor:
raise URLSchemeUnknown(scheme)
pool_key = pool_key_constructor(request_context)
return self.connection_from_pool_key(pool_key, request_context=request_context)
def connection_from_pool_key(self, pool_key, request_context=None):
"""
Get a :class:`urllib3.connectionpool.ConnectionPool` based on the provided pool key.
``pool_key`` should be a namedtuple that only contains immutable
objects. At a minimum it must have the ``scheme``, ``host``, and
``port`` fields.
"""
with self.pools.lock:
# If the scheme, host, or port doesn't match existing open
# connections, open a new ConnectionPool.
pool = self.pools.get(pool_key)
if pool:
return pool
# Make a fresh ConnectionPool of the desired type
scheme = request_context["scheme"]
host = request_context["host"]
port = request_context["port"]
pool = self._new_pool(scheme, host, port, request_context=request_context)
self.pools[pool_key] = pool
return pool
def connection_from_url(self, url, pool_kwargs=None):
"""
Similar to :func:`urllib3.connectionpool.connection_from_url`.
If ``pool_kwargs`` is not provided and a new pool needs to be
constructed, ``self.connection_pool_kw`` is used to initialize
the :class:`urllib3.connectionpool.ConnectionPool`. If ``pool_kwargs``
is provided, it is used instead. Note that if a new pool does not
need to be created for the request, the provided ``pool_kwargs`` are
not used.
"""
u = parse_url(url)
return self.connection_from_host(
u.host, port=u.port, scheme=u.scheme, pool_kwargs=pool_kwargs
)
def _merge_pool_kwargs(self, override):
"""
Merge a dictionary of override values for self.connection_pool_kw.
This does not modify self.connection_pool_kw and returns a new dict.
Any keys in the override dictionary with a value of ``None`` are
removed from the merged dictionary.
"""
base_pool_kwargs = self.connection_pool_kw.copy()
if override:
for key, value in override.items():
if value is None:
try:
del base_pool_kwargs[key]
except KeyError:
pass
else:
base_pool_kwargs[key] = value
return base_pool_kwargs
def _proxy_requires_url_absolute_form(self, parsed_url):
"""
Indicates if the proxy requires the complete destination URL in the
request. Normally this is only needed when not using an HTTP CONNECT
tunnel.
"""
if self.proxy is None:
return False
return not connection_requires_http_tunnel(
self.proxy, self.proxy_config, parsed_url.scheme
)
def _validate_proxy_scheme_url_selection(self, url_scheme):
"""
Validates that were not attempting to do TLS in TLS connections on
Python2 or with unsupported SSL implementations.
"""
if self.proxy is None or url_scheme != "https":
return
if self.proxy.scheme != "https":
return
if six.PY2 and not self.proxy_config.use_forwarding_for_https:
raise ProxySchemeUnsupported(
"Contacting HTTPS destinations through HTTPS proxies "
"'via CONNECT tunnels' is not supported in Python 2"
)
def urlopen(self, method, url, redirect=True, **kw):
"""
Same as :meth:`urllib3.HTTPConnectionPool.urlopen`
with custom cross-host redirect logic and only sends the request-uri
portion of the ``url``.
The given ``url`` parameter must be absolute, such that an appropriate
:class:`urllib3.connectionpool.ConnectionPool` can be chosen for it.
"""
u = parse_url(url)
self._validate_proxy_scheme_url_selection(u.scheme)
conn = self.connection_from_host(u.host, port=u.port, scheme=u.scheme)
kw["assert_same_host"] = False
kw["redirect"] = False
if "headers" not in kw:
kw["headers"] = self.headers.copy()
if self._proxy_requires_url_absolute_form(u):
response = conn.urlopen(method, url, **kw)
else:
response = conn.urlopen(method, u.request_uri, **kw)
redirect_location = redirect and response.get_redirect_location()
if not redirect_location:
return response
# Support relative URLs for redirecting.
redirect_location = urljoin(url, redirect_location)
# RFC 7231, Section 6.4.4
if response.status == 303:
method = "GET"
retries = kw.get("retries")
if not isinstance(retries, Retry):
retries = Retry.from_int(retries, redirect=redirect)
# Strip headers marked as unsafe to forward to the redirected location.
# Check remove_headers_on_redirect to avoid a potential network call within
# conn.is_same_host() which may use socket.gethostbyname() in the future.
if retries.remove_headers_on_redirect and not conn.is_same_host(
redirect_location
):
headers = list(six.iterkeys(kw["headers"]))
for header in headers:
if header.lower() in retries.remove_headers_on_redirect:
kw["headers"].pop(header, None)
try:
retries = retries.increment(method, url, response=response, _pool=conn)
except MaxRetryError:
if retries.raise_on_redirect:
response.drain_conn()
raise
return response
kw["retries"] = retries
kw["redirect"] = redirect
log.info("Redirecting %s -> %s", url, redirect_location)
response.drain_conn()
return self.urlopen(method, redirect_location, **kw)
class ProxyManager(PoolManager):
"""
Behaves just like :class:`PoolManager`, but sends all requests through
the defined proxy, using the CONNECT method for HTTPS URLs.
:param proxy_url:
The URL of the proxy to be used.
:param proxy_headers:
A dictionary containing headers that will be sent to the proxy. In case
of HTTP they are being sent with each request, while in the
HTTPS/CONNECT case they are sent only once. Could be used for proxy
authentication.
:param proxy_ssl_context:
The proxy SSL context is used to establish the TLS connection to the
proxy when using HTTPS proxies.
:param use_forwarding_for_https:
(Defaults to False) If set to True will forward requests to the HTTPS
proxy to be made on behalf of the client instead of creating a TLS
tunnel via the CONNECT method. **Enabling this flag means that request
and response headers and content will be visible from the HTTPS proxy**
whereas tunneling keeps request and response headers and content
private. IP address, target hostname, SNI, and port are always visible
to an HTTPS proxy even when this flag is disabled.
Example:
>>> proxy = urllib3.ProxyManager('http://localhost:3128/')
>>> r1 = proxy.request('GET', 'http://google.com/')
>>> r2 = proxy.request('GET', 'http://httpbin.org/')
>>> len(proxy.pools)
1
>>> r3 = proxy.request('GET', 'https://httpbin.org/')
>>> r4 = proxy.request('GET', 'https://twitter.com/')
>>> len(proxy.pools)
3
"""
def __init__(
self,
proxy_url,
num_pools=10,
headers=None,
proxy_headers=None,
proxy_ssl_context=None,
use_forwarding_for_https=False,
**connection_pool_kw
):
if isinstance(proxy_url, HTTPConnectionPool):
proxy_url = "%s://%s:%i" % (
proxy_url.scheme,
proxy_url.host,
proxy_url.port,
)
proxy = parse_url(proxy_url)
if proxy.scheme not in ("http", "https"):
raise ProxySchemeUnknown(proxy.scheme)
if not proxy.port:
port = port_by_scheme.get(proxy.scheme, 80)
proxy = proxy._replace(port=port)
self.proxy = proxy
self.proxy_headers = proxy_headers or {}
self.proxy_ssl_context = proxy_ssl_context
self.proxy_config = ProxyConfig(proxy_ssl_context, use_forwarding_for_https)
connection_pool_kw["_proxy"] = self.proxy
connection_pool_kw["_proxy_headers"] = self.proxy_headers
connection_pool_kw["_proxy_config"] = self.proxy_config
super(ProxyManager, self).__init__(num_pools, headers, **connection_pool_kw)
def connection_from_host(self, host, port=None, scheme="http", pool_kwargs=None):
if scheme == "https":
return super(ProxyManager, self).connection_from_host(
host, port, scheme, pool_kwargs=pool_kwargs
)
return super(ProxyManager, self).connection_from_host(
self.proxy.host, self.proxy.port, self.proxy.scheme, pool_kwargs=pool_kwargs
)
def _set_proxy_headers(self, url, headers=None):
"""
Sets headers needed by proxies: specifically, the Accept and Host
headers. Only sets headers not provided by the user.
"""
headers_ = {"Accept": "*/*"}
netloc = parse_url(url).netloc
if netloc:
headers_["Host"] = netloc
if headers:
headers_.update(headers)
return headers_
def urlopen(self, method, url, redirect=True, **kw):
"Same as HTTP(S)ConnectionPool.urlopen, ``url`` must be absolute."
u = parse_url(url)
if not connection_requires_http_tunnel(self.proxy, self.proxy_config, u.scheme):
# For connections using HTTP CONNECT, httplib sets the necessary
# headers on the CONNECT to the proxy. If we're not using CONNECT,
# we'll definitely need to set 'Host' at the very least.
headers = kw.get("headers", self.headers)
kw["headers"] = self._set_proxy_headers(url, headers)
return super(ProxyManager, self).urlopen(method, url, redirect=redirect, **kw)
def proxy_from_url(url, **kw):
return ProxyManager(proxy_url=url, **kw)
| 19,752 | Python | 35.715613 | 100 | 0.626519 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/fields.py | from __future__ import absolute_import
import email.utils
import mimetypes
import re
from .packages import six
def guess_content_type(filename, default="application/octet-stream"):
"""
Guess the "Content-Type" of a file.
:param filename:
The filename to guess the "Content-Type" of using :mod:`mimetypes`.
:param default:
If no "Content-Type" can be guessed, default to `default`.
"""
if filename:
return mimetypes.guess_type(filename)[0] or default
return default
def format_header_param_rfc2231(name, value):
"""
Helper function to format and quote a single header parameter using the
strategy defined in RFC 2231.
Particularly useful for header parameters which might contain
non-ASCII values, like file names. This follows
`RFC 2388 Section 4.4 <https://tools.ietf.org/html/rfc2388#section-4.4>`_.
:param name:
The name of the parameter, a string expected to be ASCII only.
:param value:
The value of the parameter, provided as ``bytes`` or `str``.
:ret:
An RFC-2231-formatted unicode string.
"""
if isinstance(value, six.binary_type):
value = value.decode("utf-8")
if not any(ch in value for ch in '"\\\r\n'):
result = u'%s="%s"' % (name, value)
try:
result.encode("ascii")
except (UnicodeEncodeError, UnicodeDecodeError):
pass
else:
return result
if six.PY2: # Python 2:
value = value.encode("utf-8")
# encode_rfc2231 accepts an encoded string and returns an ascii-encoded
# string in Python 2 but accepts and returns unicode strings in Python 3
value = email.utils.encode_rfc2231(value, "utf-8")
value = "%s*=%s" % (name, value)
if six.PY2: # Python 2:
value = value.decode("utf-8")
return value
_HTML5_REPLACEMENTS = {
u"\u0022": u"%22",
# Replace "\" with "\\".
u"\u005C": u"\u005C\u005C",
}
# All control characters from 0x00 to 0x1F *except* 0x1B.
_HTML5_REPLACEMENTS.update(
{
six.unichr(cc): u"%{:02X}".format(cc)
for cc in range(0x00, 0x1F + 1)
if cc not in (0x1B,)
}
)
def _replace_multiple(value, needles_and_replacements):
def replacer(match):
return needles_and_replacements[match.group(0)]
pattern = re.compile(
r"|".join([re.escape(needle) for needle in needles_and_replacements.keys()])
)
result = pattern.sub(replacer, value)
return result
def format_header_param_html5(name, value):
"""
Helper function to format and quote a single header parameter using the
HTML5 strategy.
Particularly useful for header parameters which might contain
non-ASCII values, like file names. This follows the `HTML5 Working Draft
Section 4.10.22.7`_ and matches the behavior of curl and modern browsers.
.. _HTML5 Working Draft Section 4.10.22.7:
https://w3c.github.io/html/sec-forms.html#multipart-form-data
:param name:
The name of the parameter, a string expected to be ASCII only.
:param value:
The value of the parameter, provided as ``bytes`` or `str``.
:ret:
A unicode string, stripped of troublesome characters.
"""
if isinstance(value, six.binary_type):
value = value.decode("utf-8")
value = _replace_multiple(value, _HTML5_REPLACEMENTS)
return u'%s="%s"' % (name, value)
# For backwards-compatibility.
format_header_param = format_header_param_html5
class RequestField(object):
"""
A data container for request body parameters.
:param name:
The name of this request field. Must be unicode.
:param data:
The data/value body.
:param filename:
An optional filename of the request field. Must be unicode.
:param headers:
An optional dict-like object of headers to initially use for the field.
:param header_formatter:
An optional callable that is used to encode and format the headers. By
default, this is :func:`format_header_param_html5`.
"""
def __init__(
self,
name,
data,
filename=None,
headers=None,
header_formatter=format_header_param_html5,
):
self._name = name
self._filename = filename
self.data = data
self.headers = {}
if headers:
self.headers = dict(headers)
self.header_formatter = header_formatter
@classmethod
def from_tuples(cls, fieldname, value, header_formatter=format_header_param_html5):
"""
A :class:`~urllib3.fields.RequestField` factory from old-style tuple parameters.
Supports constructing :class:`~urllib3.fields.RequestField` from
parameter of key/value strings AND key/filetuple. A filetuple is a
(filename, data, MIME type) tuple where the MIME type is optional.
For example::
'foo': 'bar',
'fakefile': ('foofile.txt', 'contents of foofile'),
'realfile': ('barfile.txt', open('realfile').read()),
'typedfile': ('bazfile.bin', open('bazfile').read(), 'image/jpeg'),
'nonamefile': 'contents of nonamefile field',
Field names and filenames must be unicode.
"""
if isinstance(value, tuple):
if len(value) == 3:
filename, data, content_type = value
else:
filename, data = value
content_type = guess_content_type(filename)
else:
filename = None
content_type = None
data = value
request_param = cls(
fieldname, data, filename=filename, header_formatter=header_formatter
)
request_param.make_multipart(content_type=content_type)
return request_param
def _render_part(self, name, value):
"""
Overridable helper function to format a single header parameter. By
default, this calls ``self.header_formatter``.
:param name:
The name of the parameter, a string expected to be ASCII only.
:param value:
The value of the parameter, provided as a unicode string.
"""
return self.header_formatter(name, value)
def _render_parts(self, header_parts):
"""
Helper function to format and quote a single header.
Useful for single headers that are composed of multiple items. E.g.,
'Content-Disposition' fields.
:param header_parts:
A sequence of (k, v) tuples or a :class:`dict` of (k, v) to format
as `k1="v1"; k2="v2"; ...`.
"""
parts = []
iterable = header_parts
if isinstance(header_parts, dict):
iterable = header_parts.items()
for name, value in iterable:
if value is not None:
parts.append(self._render_part(name, value))
return u"; ".join(parts)
def render_headers(self):
"""
Renders the headers for this request field.
"""
lines = []
sort_keys = ["Content-Disposition", "Content-Type", "Content-Location"]
for sort_key in sort_keys:
if self.headers.get(sort_key, False):
lines.append(u"%s: %s" % (sort_key, self.headers[sort_key]))
for header_name, header_value in self.headers.items():
if header_name not in sort_keys:
if header_value:
lines.append(u"%s: %s" % (header_name, header_value))
lines.append(u"\r\n")
return u"\r\n".join(lines)
def make_multipart(
self, content_disposition=None, content_type=None, content_location=None
):
"""
Makes this request field into a multipart request field.
This method overrides "Content-Disposition", "Content-Type" and
"Content-Location" headers to the request parameter.
:param content_type:
The 'Content-Type' of the request body.
:param content_location:
The 'Content-Location' of the request body.
"""
self.headers["Content-Disposition"] = content_disposition or u"form-data"
self.headers["Content-Disposition"] += u"; ".join(
[
u"",
self._render_parts(
((u"name", self._name), (u"filename", self._filename))
),
]
)
self.headers["Content-Type"] = content_type
self.headers["Content-Location"] = content_location
| 8,579 | Python | 30.2 | 88 | 0.602984 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/_collections.py | from __future__ import absolute_import
try:
from collections.abc import Mapping, MutableMapping
except ImportError:
from collections import Mapping, MutableMapping
try:
from threading import RLock
except ImportError: # Platform-specific: No threads available
class RLock:
def __enter__(self):
pass
def __exit__(self, exc_type, exc_value, traceback):
pass
from collections import OrderedDict
from .exceptions import InvalidHeader
from .packages import six
from .packages.six import iterkeys, itervalues
__all__ = ["RecentlyUsedContainer", "HTTPHeaderDict"]
_Null = object()
class RecentlyUsedContainer(MutableMapping):
"""
Provides a thread-safe dict-like container which maintains up to
``maxsize`` keys while throwing away the least-recently-used keys beyond
``maxsize``.
:param maxsize:
Maximum number of recent elements to retain.
:param dispose_func:
Every time an item is evicted from the container,
``dispose_func(value)`` is called. Callback which will get called
"""
ContainerCls = OrderedDict
def __init__(self, maxsize=10, dispose_func=None):
self._maxsize = maxsize
self.dispose_func = dispose_func
self._container = self.ContainerCls()
self.lock = RLock()
def __getitem__(self, key):
# Re-insert the item, moving it to the end of the eviction line.
with self.lock:
item = self._container.pop(key)
self._container[key] = item
return item
def __setitem__(self, key, value):
evicted_value = _Null
with self.lock:
# Possibly evict the existing value of 'key'
evicted_value = self._container.get(key, _Null)
self._container[key] = value
# If we didn't evict an existing value, we might have to evict the
# least recently used item from the beginning of the container.
if len(self._container) > self._maxsize:
_key, evicted_value = self._container.popitem(last=False)
if self.dispose_func and evicted_value is not _Null:
self.dispose_func(evicted_value)
def __delitem__(self, key):
with self.lock:
value = self._container.pop(key)
if self.dispose_func:
self.dispose_func(value)
def __len__(self):
with self.lock:
return len(self._container)
def __iter__(self):
raise NotImplementedError(
"Iteration over this class is unlikely to be threadsafe."
)
def clear(self):
with self.lock:
# Copy pointers to all values, then wipe the mapping
values = list(itervalues(self._container))
self._container.clear()
if self.dispose_func:
for value in values:
self.dispose_func(value)
def keys(self):
with self.lock:
return list(iterkeys(self._container))
class HTTPHeaderDict(MutableMapping):
"""
:param headers:
An iterable of field-value pairs. Must not contain multiple field names
when compared case-insensitively.
:param kwargs:
Additional field-value pairs to pass in to ``dict.update``.
A ``dict`` like container for storing HTTP Headers.
Field names are stored and compared case-insensitively in compliance with
RFC 7230. Iteration provides the first case-sensitive key seen for each
case-insensitive pair.
Using ``__setitem__`` syntax overwrites fields that compare equal
case-insensitively in order to maintain ``dict``'s api. For fields that
compare equal, instead create a new ``HTTPHeaderDict`` and use ``.add``
in a loop.
If multiple fields that are equal case-insensitively are passed to the
constructor or ``.update``, the behavior is undefined and some will be
lost.
>>> headers = HTTPHeaderDict()
>>> headers.add('Set-Cookie', 'foo=bar')
>>> headers.add('set-cookie', 'baz=quxx')
>>> headers['content-length'] = '7'
>>> headers['SET-cookie']
'foo=bar, baz=quxx'
>>> headers['Content-Length']
'7'
"""
def __init__(self, headers=None, **kwargs):
super(HTTPHeaderDict, self).__init__()
self._container = OrderedDict()
if headers is not None:
if isinstance(headers, HTTPHeaderDict):
self._copy_from(headers)
else:
self.extend(headers)
if kwargs:
self.extend(kwargs)
def __setitem__(self, key, val):
self._container[key.lower()] = [key, val]
return self._container[key.lower()]
def __getitem__(self, key):
val = self._container[key.lower()]
return ", ".join(val[1:])
def __delitem__(self, key):
del self._container[key.lower()]
def __contains__(self, key):
return key.lower() in self._container
def __eq__(self, other):
if not isinstance(other, Mapping) and not hasattr(other, "keys"):
return False
if not isinstance(other, type(self)):
other = type(self)(other)
return dict((k.lower(), v) for k, v in self.itermerged()) == dict(
(k.lower(), v) for k, v in other.itermerged()
)
def __ne__(self, other):
return not self.__eq__(other)
if six.PY2: # Python 2
iterkeys = MutableMapping.iterkeys
itervalues = MutableMapping.itervalues
__marker = object()
def __len__(self):
return len(self._container)
def __iter__(self):
# Only provide the originally cased names
for vals in self._container.values():
yield vals[0]
def pop(self, key, default=__marker):
"""D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
If key is not found, d is returned if given, otherwise KeyError is raised.
"""
# Using the MutableMapping function directly fails due to the private marker.
# Using ordinary dict.pop would expose the internal structures.
# So let's reinvent the wheel.
try:
value = self[key]
except KeyError:
if default is self.__marker:
raise
return default
else:
del self[key]
return value
def discard(self, key):
try:
del self[key]
except KeyError:
pass
def add(self, key, val):
"""Adds a (name, value) pair, doesn't overwrite the value if it already
exists.
>>> headers = HTTPHeaderDict(foo='bar')
>>> headers.add('Foo', 'baz')
>>> headers['foo']
'bar, baz'
"""
key_lower = key.lower()
new_vals = [key, val]
# Keep the common case aka no item present as fast as possible
vals = self._container.setdefault(key_lower, new_vals)
if new_vals is not vals:
vals.append(val)
def extend(self, *args, **kwargs):
"""Generic import function for any type of header-like object.
Adapted version of MutableMapping.update in order to insert items
with self.add instead of self.__setitem__
"""
if len(args) > 1:
raise TypeError(
"extend() takes at most 1 positional "
"arguments ({0} given)".format(len(args))
)
other = args[0] if len(args) >= 1 else ()
if isinstance(other, HTTPHeaderDict):
for key, val in other.iteritems():
self.add(key, val)
elif isinstance(other, Mapping):
for key in other:
self.add(key, other[key])
elif hasattr(other, "keys"):
for key in other.keys():
self.add(key, other[key])
else:
for key, value in other:
self.add(key, value)
for key, value in kwargs.items():
self.add(key, value)
def getlist(self, key, default=__marker):
"""Returns a list of all the values for the named field. Returns an
empty list if the key doesn't exist."""
try:
vals = self._container[key.lower()]
except KeyError:
if default is self.__marker:
return []
return default
else:
return vals[1:]
# Backwards compatibility for httplib
getheaders = getlist
getallmatchingheaders = getlist
iget = getlist
# Backwards compatibility for http.cookiejar
get_all = getlist
def __repr__(self):
return "%s(%s)" % (type(self).__name__, dict(self.itermerged()))
def _copy_from(self, other):
for key in other:
val = other.getlist(key)
if isinstance(val, list):
# Don't need to convert tuples
val = list(val)
self._container[key.lower()] = [key] + val
def copy(self):
clone = type(self)()
clone._copy_from(self)
return clone
def iteritems(self):
"""Iterate over all header lines, including duplicate ones."""
for key in self:
vals = self._container[key.lower()]
for val in vals[1:]:
yield vals[0], val
def itermerged(self):
"""Iterate over all headers, merging duplicate ones together."""
for key in self:
val = self._container[key.lower()]
yield val[0], ", ".join(val[1:])
def items(self):
return list(self.iteritems())
@classmethod
def from_httplib(cls, message): # Python 2
"""Read headers from a Python 2 httplib message object."""
# python2.7 does not expose a proper API for exporting multiheaders
# efficiently. This function re-reads raw lines from the message
# object and extracts the multiheaders properly.
obs_fold_continued_leaders = (" ", "\t")
headers = []
for line in message.headers:
if line.startswith(obs_fold_continued_leaders):
if not headers:
# We received a header line that starts with OWS as described
# in RFC-7230 S3.2.4. This indicates a multiline header, but
# there exists no previous header to which we can attach it.
raise InvalidHeader(
"Header continuation with no previous header: %s" % line
)
else:
key, value = headers[-1]
headers[-1] = (key, value + " " + line.strip())
continue
key, value = line.split(":", 1)
headers.append((key, value.strip()))
return cls(headers)
| 10,811 | Python | 30.988166 | 86 | 0.575895 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/request.py | from __future__ import absolute_import
from .filepost import encode_multipart_formdata
from .packages.six.moves.urllib.parse import urlencode
__all__ = ["RequestMethods"]
class RequestMethods(object):
"""
Convenience mixin for classes who implement a :meth:`urlopen` method, such
as :class:`urllib3.HTTPConnectionPool` and
:class:`urllib3.PoolManager`.
Provides behavior for making common types of HTTP request methods and
decides which type of request field encoding to use.
Specifically,
:meth:`.request_encode_url` is for sending requests whose fields are
encoded in the URL (such as GET, HEAD, DELETE).
:meth:`.request_encode_body` is for sending requests whose fields are
encoded in the *body* of the request using multipart or www-form-urlencoded
(such as for POST, PUT, PATCH).
:meth:`.request` is for making any kind of request, it will look up the
appropriate encoding format and use one of the above two methods to make
the request.
Initializer parameters:
:param headers:
Headers to include with all requests, unless other headers are given
explicitly.
"""
_encode_url_methods = {"DELETE", "GET", "HEAD", "OPTIONS"}
def __init__(self, headers=None):
self.headers = headers or {}
def urlopen(
self,
method,
url,
body=None,
headers=None,
encode_multipart=True,
multipart_boundary=None,
**kw
): # Abstract
raise NotImplementedError(
"Classes extending RequestMethods must implement "
"their own ``urlopen`` method."
)
def request(self, method, url, fields=None, headers=None, **urlopen_kw):
"""
Make a request using :meth:`urlopen` with the appropriate encoding of
``fields`` based on the ``method`` used.
This is a convenience method that requires the least amount of manual
effort. It can be used in most situations, while still having the
option to drop down to more specific methods when necessary, such as
:meth:`request_encode_url`, :meth:`request_encode_body`,
or even the lowest level :meth:`urlopen`.
"""
method = method.upper()
urlopen_kw["request_url"] = url
if method in self._encode_url_methods:
return self.request_encode_url(
method, url, fields=fields, headers=headers, **urlopen_kw
)
else:
return self.request_encode_body(
method, url, fields=fields, headers=headers, **urlopen_kw
)
def request_encode_url(self, method, url, fields=None, headers=None, **urlopen_kw):
"""
Make a request using :meth:`urlopen` with the ``fields`` encoded in
the url. This is useful for request methods like GET, HEAD, DELETE, etc.
"""
if headers is None:
headers = self.headers
extra_kw = {"headers": headers}
extra_kw.update(urlopen_kw)
if fields:
url += "?" + urlencode(fields)
return self.urlopen(method, url, **extra_kw)
def request_encode_body(
self,
method,
url,
fields=None,
headers=None,
encode_multipart=True,
multipart_boundary=None,
**urlopen_kw
):
"""
Make a request using :meth:`urlopen` with the ``fields`` encoded in
the body. This is useful for request methods like POST, PUT, PATCH, etc.
When ``encode_multipart=True`` (default), then
:func:`urllib3.encode_multipart_formdata` is used to encode
the payload with the appropriate content type. Otherwise
:func:`urllib.parse.urlencode` is used with the
'application/x-www-form-urlencoded' content type.
Multipart encoding must be used when posting files, and it's reasonably
safe to use it in other times too. However, it may break request
signing, such as with OAuth.
Supports an optional ``fields`` parameter of key/value strings AND
key/filetuple. A filetuple is a (filename, data, MIME type) tuple where
the MIME type is optional. For example::
fields = {
'foo': 'bar',
'fakefile': ('foofile.txt', 'contents of foofile'),
'realfile': ('barfile.txt', open('realfile').read()),
'typedfile': ('bazfile.bin', open('bazfile').read(),
'image/jpeg'),
'nonamefile': 'contents of nonamefile field',
}
When uploading a file, providing a filename (the first parameter of the
tuple) is optional but recommended to best mimic behavior of browsers.
Note that if ``headers`` are supplied, the 'Content-Type' header will
be overwritten because it depends on the dynamic random boundary string
which is used to compose the body of the request. The random boundary
string can be explicitly set with the ``multipart_boundary`` parameter.
"""
if headers is None:
headers = self.headers
extra_kw = {"headers": {}}
if fields:
if "body" in urlopen_kw:
raise TypeError(
"request got values for both 'fields' and 'body', can only specify one."
)
if encode_multipart:
body, content_type = encode_multipart_formdata(
fields, boundary=multipart_boundary
)
else:
body, content_type = (
urlencode(fields),
"application/x-www-form-urlencoded",
)
extra_kw["body"] = body
extra_kw["headers"] = {"Content-Type": content_type}
extra_kw["headers"].update(headers)
extra_kw.update(urlopen_kw)
return self.urlopen(method, url, **extra_kw)
| 5,985 | Python | 34.005848 | 92 | 0.600334 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/__init__.py | """
Python HTTP library with thread-safe connection pooling, file post support, user friendly, and more
"""
from __future__ import absolute_import
# Set default logging handler to avoid "No handler found" warnings.
import logging
import warnings
from logging import NullHandler
from . import exceptions
from ._version import __version__
from .connectionpool import HTTPConnectionPool, HTTPSConnectionPool, connection_from_url
from .filepost import encode_multipart_formdata
from .poolmanager import PoolManager, ProxyManager, proxy_from_url
from .response import HTTPResponse
from .util.request import make_headers
from .util.retry import Retry
from .util.timeout import Timeout
from .util.url import get_host
# === NOTE TO REPACKAGERS AND VENDORS ===
# Please delete this block, this logic is only
# for urllib3 being distributed via PyPI.
# See: https://github.com/urllib3/urllib3/issues/2680
try:
import urllib3_secure_extra # type: ignore # noqa: F401
except ImportError:
pass
else:
warnings.warn(
"'urllib3[secure]' extra is deprecated and will be removed "
"in a future release of urllib3 2.x. Read more in this issue: "
"https://github.com/urllib3/urllib3/issues/2680",
category=DeprecationWarning,
stacklevel=2,
)
__author__ = "Andrey Petrov ([email protected])"
__license__ = "MIT"
__version__ = __version__
__all__ = (
"HTTPConnectionPool",
"HTTPSConnectionPool",
"PoolManager",
"ProxyManager",
"HTTPResponse",
"Retry",
"Timeout",
"add_stderr_logger",
"connection_from_url",
"disable_warnings",
"encode_multipart_formdata",
"get_host",
"make_headers",
"proxy_from_url",
)
logging.getLogger(__name__).addHandler(NullHandler())
def add_stderr_logger(level=logging.DEBUG):
"""
Helper for quickly adding a StreamHandler to the logger. Useful for
debugging.
Returns the handler after adding it.
"""
# This method needs to be in this __init__.py to get the __name__ correct
# even if urllib3 is vendored within another package.
logger = logging.getLogger(__name__)
handler = logging.StreamHandler()
handler.setFormatter(logging.Formatter("%(asctime)s %(levelname)s %(message)s"))
logger.addHandler(handler)
logger.setLevel(level)
logger.debug("Added a stderr logging handler to logger: %s", __name__)
return handler
# ... Clean up.
del NullHandler
# All warning filters *must* be appended unless you're really certain that they
# shouldn't be: otherwise, it's very hard for users to use most Python
# mechanisms to silence them.
# SecurityWarning's always go off by default.
warnings.simplefilter("always", exceptions.SecurityWarning, append=True)
# SubjectAltNameWarning's should go off once per host
warnings.simplefilter("default", exceptions.SubjectAltNameWarning, append=True)
# InsecurePlatformWarning's don't vary between requests, so we keep it default.
warnings.simplefilter("default", exceptions.InsecurePlatformWarning, append=True)
# SNIMissingWarnings should go off only once.
warnings.simplefilter("default", exceptions.SNIMissingWarning, append=True)
def disable_warnings(category=exceptions.HTTPWarning):
"""
Helper for quickly disabling all urllib3 warnings.
"""
warnings.simplefilter("ignore", category)
| 3,333 | Python | 31.368932 | 99 | 0.727273 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/connectionpool.py | from __future__ import absolute_import
import errno
import logging
import re
import socket
import sys
import warnings
from socket import error as SocketError
from socket import timeout as SocketTimeout
from .connection import (
BaseSSLError,
BrokenPipeError,
DummyConnection,
HTTPConnection,
HTTPException,
HTTPSConnection,
VerifiedHTTPSConnection,
port_by_scheme,
)
from .exceptions import (
ClosedPoolError,
EmptyPoolError,
HeaderParsingError,
HostChangedError,
InsecureRequestWarning,
LocationValueError,
MaxRetryError,
NewConnectionError,
ProtocolError,
ProxyError,
ReadTimeoutError,
SSLError,
TimeoutError,
)
from .packages import six
from .packages.six.moves import queue
from .request import RequestMethods
from .response import HTTPResponse
from .util.connection import is_connection_dropped
from .util.proxy import connection_requires_http_tunnel
from .util.queue import LifoQueue
from .util.request import set_file_position
from .util.response import assert_header_parsing
from .util.retry import Retry
from .util.ssl_match_hostname import CertificateError
from .util.timeout import Timeout
from .util.url import Url, _encode_target
from .util.url import _normalize_host as normalize_host
from .util.url import get_host, parse_url
try: # Platform-specific: Python 3
import weakref
weakref_finalize = weakref.finalize
except AttributeError: # Platform-specific: Python 2
from .packages.backports.weakref_finalize import weakref_finalize
xrange = six.moves.xrange
log = logging.getLogger(__name__)
_Default = object()
# Pool objects
class ConnectionPool(object):
"""
Base class for all connection pools, such as
:class:`.HTTPConnectionPool` and :class:`.HTTPSConnectionPool`.
.. note::
ConnectionPool.urlopen() does not normalize or percent-encode target URIs
which is useful if your target server doesn't support percent-encoded
target URIs.
"""
scheme = None
QueueCls = LifoQueue
def __init__(self, host, port=None):
if not host:
raise LocationValueError("No host specified.")
self.host = _normalize_host(host, scheme=self.scheme)
self._proxy_host = host.lower()
self.port = port
def __str__(self):
return "%s(host=%r, port=%r)" % (type(self).__name__, self.host, self.port)
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
self.close()
# Return False to re-raise any potential exceptions
return False
def close(self):
"""
Close all pooled connections and disable the pool.
"""
pass
# This is taken from http://hg.python.org/cpython/file/7aaba721ebc0/Lib/socket.py#l252
_blocking_errnos = {errno.EAGAIN, errno.EWOULDBLOCK}
class HTTPConnectionPool(ConnectionPool, RequestMethods):
"""
Thread-safe connection pool for one host.
:param host:
Host used for this HTTP Connection (e.g. "localhost"), passed into
:class:`http.client.HTTPConnection`.
:param port:
Port used for this HTTP Connection (None is equivalent to 80), passed
into :class:`http.client.HTTPConnection`.
:param strict:
Causes BadStatusLine to be raised if the status line can't be parsed
as a valid HTTP/1.0 or 1.1 status line, passed into
:class:`http.client.HTTPConnection`.
.. note::
Only works in Python 2. This parameter is ignored in Python 3.
:param timeout:
Socket timeout in seconds for each individual connection. This can
be a float or integer, which sets the timeout for the HTTP request,
or an instance of :class:`urllib3.util.Timeout` which gives you more
fine-grained control over request timeouts. After the constructor has
been parsed, this is always a `urllib3.util.Timeout` object.
:param maxsize:
Number of connections to save that can be reused. More than 1 is useful
in multithreaded situations. If ``block`` is set to False, more
connections will be created but they will not be saved once they've
been used.
:param block:
If set to True, no more than ``maxsize`` connections will be used at
a time. When no free connections are available, the call will block
until a connection has been released. This is a useful side effect for
particular multithreaded situations where one does not want to use more
than maxsize connections per host to prevent flooding.
:param headers:
Headers to include with all requests, unless other headers are given
explicitly.
:param retries:
Retry configuration to use by default with requests in this pool.
:param _proxy:
Parsed proxy URL, should not be used directly, instead, see
:class:`urllib3.ProxyManager`
:param _proxy_headers:
A dictionary with proxy headers, should not be used directly,
instead, see :class:`urllib3.ProxyManager`
:param \\**conn_kw:
Additional parameters are used to create fresh :class:`urllib3.connection.HTTPConnection`,
:class:`urllib3.connection.HTTPSConnection` instances.
"""
scheme = "http"
ConnectionCls = HTTPConnection
ResponseCls = HTTPResponse
def __init__(
self,
host,
port=None,
strict=False,
timeout=Timeout.DEFAULT_TIMEOUT,
maxsize=1,
block=False,
headers=None,
retries=None,
_proxy=None,
_proxy_headers=None,
_proxy_config=None,
**conn_kw
):
ConnectionPool.__init__(self, host, port)
RequestMethods.__init__(self, headers)
self.strict = strict
if not isinstance(timeout, Timeout):
timeout = Timeout.from_float(timeout)
if retries is None:
retries = Retry.DEFAULT
self.timeout = timeout
self.retries = retries
self.pool = self.QueueCls(maxsize)
self.block = block
self.proxy = _proxy
self.proxy_headers = _proxy_headers or {}
self.proxy_config = _proxy_config
# Fill the queue up so that doing get() on it will block properly
for _ in xrange(maxsize):
self.pool.put(None)
# These are mostly for testing and debugging purposes.
self.num_connections = 0
self.num_requests = 0
self.conn_kw = conn_kw
if self.proxy:
# Enable Nagle's algorithm for proxies, to avoid packet fragmentation.
# We cannot know if the user has added default socket options, so we cannot replace the
# list.
self.conn_kw.setdefault("socket_options", [])
self.conn_kw["proxy"] = self.proxy
self.conn_kw["proxy_config"] = self.proxy_config
# Do not pass 'self' as callback to 'finalize'.
# Then the 'finalize' would keep an endless living (leak) to self.
# By just passing a reference to the pool allows the garbage collector
# to free self if nobody else has a reference to it.
pool = self.pool
# Close all the HTTPConnections in the pool before the
# HTTPConnectionPool object is garbage collected.
weakref_finalize(self, _close_pool_connections, pool)
def _new_conn(self):
"""
Return a fresh :class:`HTTPConnection`.
"""
self.num_connections += 1
log.debug(
"Starting new HTTP connection (%d): %s:%s",
self.num_connections,
self.host,
self.port or "80",
)
conn = self.ConnectionCls(
host=self.host,
port=self.port,
timeout=self.timeout.connect_timeout,
strict=self.strict,
**self.conn_kw
)
return conn
def _get_conn(self, timeout=None):
"""
Get a connection. Will return a pooled connection if one is available.
If no connections are available and :prop:`.block` is ``False``, then a
fresh connection is returned.
:param timeout:
Seconds to wait before giving up and raising
:class:`urllib3.exceptions.EmptyPoolError` if the pool is empty and
:prop:`.block` is ``True``.
"""
conn = None
try:
conn = self.pool.get(block=self.block, timeout=timeout)
except AttributeError: # self.pool is None
raise ClosedPoolError(self, "Pool is closed.")
except queue.Empty:
if self.block:
raise EmptyPoolError(
self,
"Pool reached maximum size and no more connections are allowed.",
)
pass # Oh well, we'll create a new connection then
# If this is a persistent connection, check if it got disconnected
if conn and is_connection_dropped(conn):
log.debug("Resetting dropped connection: %s", self.host)
conn.close()
if getattr(conn, "auto_open", 1) == 0:
# This is a proxied connection that has been mutated by
# http.client._tunnel() and cannot be reused (since it would
# attempt to bypass the proxy)
conn = None
return conn or self._new_conn()
def _put_conn(self, conn):
"""
Put a connection back into the pool.
:param conn:
Connection object for the current host and port as returned by
:meth:`._new_conn` or :meth:`._get_conn`.
If the pool is already full, the connection is closed and discarded
because we exceeded maxsize. If connections are discarded frequently,
then maxsize should be increased.
If the pool is closed, then the connection will be closed and discarded.
"""
try:
self.pool.put(conn, block=False)
return # Everything is dandy, done.
except AttributeError:
# self.pool is None.
pass
except queue.Full:
# This should never happen if self.block == True
log.warning(
"Connection pool is full, discarding connection: %s. Connection pool size: %s",
self.host,
self.pool.qsize(),
)
# Connection never got put back into the pool, close it.
if conn:
conn.close()
def _validate_conn(self, conn):
"""
Called right before a request is made, after the socket is created.
"""
pass
def _prepare_proxy(self, conn):
# Nothing to do for HTTP connections.
pass
def _get_timeout(self, timeout):
"""Helper that always returns a :class:`urllib3.util.Timeout`"""
if timeout is _Default:
return self.timeout.clone()
if isinstance(timeout, Timeout):
return timeout.clone()
else:
# User passed us an int/float. This is for backwards compatibility,
# can be removed later
return Timeout.from_float(timeout)
def _raise_timeout(self, err, url, timeout_value):
"""Is the error actually a timeout? Will raise a ReadTimeout or pass"""
if isinstance(err, SocketTimeout):
raise ReadTimeoutError(
self, url, "Read timed out. (read timeout=%s)" % timeout_value
)
# See the above comment about EAGAIN in Python 3. In Python 2 we have
# to specifically catch it and throw the timeout error
if hasattr(err, "errno") and err.errno in _blocking_errnos:
raise ReadTimeoutError(
self, url, "Read timed out. (read timeout=%s)" % timeout_value
)
# Catch possible read timeouts thrown as SSL errors. If not the
# case, rethrow the original. We need to do this because of:
# http://bugs.python.org/issue10272
if "timed out" in str(err) or "did not complete (read)" in str(
err
): # Python < 2.7.4
raise ReadTimeoutError(
self, url, "Read timed out. (read timeout=%s)" % timeout_value
)
def _make_request(
self, conn, method, url, timeout=_Default, chunked=False, **httplib_request_kw
):
"""
Perform a request on a given urllib connection object taken from our
pool.
:param conn:
a connection from one of our connection pools
:param timeout:
Socket timeout in seconds for the request. This can be a
float or integer, which will set the same timeout value for
the socket connect and the socket read, or an instance of
:class:`urllib3.util.Timeout`, which gives you more fine-grained
control over your timeouts.
"""
self.num_requests += 1
timeout_obj = self._get_timeout(timeout)
timeout_obj.start_connect()
conn.timeout = Timeout.resolve_default_timeout(timeout_obj.connect_timeout)
# Trigger any extra validation we need to do.
try:
self._validate_conn(conn)
except (SocketTimeout, BaseSSLError) as e:
# Py2 raises this as a BaseSSLError, Py3 raises it as socket timeout.
self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
raise
# conn.request() calls http.client.*.request, not the method in
# urllib3.request. It also calls makefile (recv) on the socket.
try:
if chunked:
conn.request_chunked(method, url, **httplib_request_kw)
else:
conn.request(method, url, **httplib_request_kw)
# We are swallowing BrokenPipeError (errno.EPIPE) since the server is
# legitimately able to close the connection after sending a valid response.
# With this behaviour, the received response is still readable.
except BrokenPipeError:
# Python 3
pass
except IOError as e:
# Python 2 and macOS/Linux
# EPIPE and ESHUTDOWN are BrokenPipeError on Python 2, and EPROTOTYPE is needed on macOS
# https://erickt.github.io/blog/2014/11/19/adventures-in-debugging-a-potential-osx-kernel-bug/
if e.errno not in {
errno.EPIPE,
errno.ESHUTDOWN,
errno.EPROTOTYPE,
}:
raise
# Reset the timeout for the recv() on the socket
read_timeout = timeout_obj.read_timeout
# App Engine doesn't have a sock attr
if getattr(conn, "sock", None):
# In Python 3 socket.py will catch EAGAIN and return None when you
# try and read into the file pointer created by http.client, which
# instead raises a BadStatusLine exception. Instead of catching
# the exception and assuming all BadStatusLine exceptions are read
# timeouts, check for a zero timeout before making the request.
if read_timeout == 0:
raise ReadTimeoutError(
self, url, "Read timed out. (read timeout=%s)" % read_timeout
)
if read_timeout is Timeout.DEFAULT_TIMEOUT:
conn.sock.settimeout(socket.getdefaulttimeout())
else: # None or a value
conn.sock.settimeout(read_timeout)
# Receive the response from the server
try:
try:
# Python 2.7, use buffering of HTTP responses
httplib_response = conn.getresponse(buffering=True)
except TypeError:
# Python 3
try:
httplib_response = conn.getresponse()
except BaseException as e:
# Remove the TypeError from the exception chain in
# Python 3 (including for exceptions like SystemExit).
# Otherwise it looks like a bug in the code.
six.raise_from(e, None)
except (SocketTimeout, BaseSSLError, SocketError) as e:
self._raise_timeout(err=e, url=url, timeout_value=read_timeout)
raise
# AppEngine doesn't have a version attr.
http_version = getattr(conn, "_http_vsn_str", "HTTP/?")
log.debug(
'%s://%s:%s "%s %s %s" %s %s',
self.scheme,
self.host,
self.port,
method,
url,
http_version,
httplib_response.status,
httplib_response.length,
)
try:
assert_header_parsing(httplib_response.msg)
except (HeaderParsingError, TypeError) as hpe: # Platform-specific: Python 3
log.warning(
"Failed to parse headers (url=%s): %s",
self._absolute_url(url),
hpe,
exc_info=True,
)
return httplib_response
def _absolute_url(self, path):
return Url(scheme=self.scheme, host=self.host, port=self.port, path=path).url
def close(self):
"""
Close all pooled connections and disable the pool.
"""
if self.pool is None:
return
# Disable access to the pool
old_pool, self.pool = self.pool, None
# Close all the HTTPConnections in the pool.
_close_pool_connections(old_pool)
def is_same_host(self, url):
"""
Check if the given ``url`` is a member of the same host as this
connection pool.
"""
if url.startswith("/"):
return True
# TODO: Add optional support for socket.gethostbyname checking.
scheme, host, port = get_host(url)
if host is not None:
host = _normalize_host(host, scheme=scheme)
# Use explicit default port for comparison when none is given
if self.port and not port:
port = port_by_scheme.get(scheme)
elif not self.port and port == port_by_scheme.get(scheme):
port = None
return (scheme, host, port) == (self.scheme, self.host, self.port)
def urlopen(
self,
method,
url,
body=None,
headers=None,
retries=None,
redirect=True,
assert_same_host=True,
timeout=_Default,
pool_timeout=None,
release_conn=None,
chunked=False,
body_pos=None,
**response_kw
):
"""
Get a connection from the pool and perform an HTTP request. This is the
lowest level call for making a request, so you'll need to specify all
the raw details.
.. note::
More commonly, it's appropriate to use a convenience method provided
by :class:`.RequestMethods`, such as :meth:`request`.
.. note::
`release_conn` will only behave as expected if
`preload_content=False` because we want to make
`preload_content=False` the default behaviour someday soon without
breaking backwards compatibility.
:param method:
HTTP request method (such as GET, POST, PUT, etc.)
:param url:
The URL to perform the request on.
:param body:
Data to send in the request body, either :class:`str`, :class:`bytes`,
an iterable of :class:`str`/:class:`bytes`, or a file-like object.
:param headers:
Dictionary of custom headers to send, such as User-Agent,
If-None-Match, etc. If None, pool headers are used. If provided,
these headers completely replace any pool-specific headers.
:param retries:
Configure the number of retries to allow before raising a
:class:`~urllib3.exceptions.MaxRetryError` exception.
Pass ``None`` to retry until you receive a response. Pass a
:class:`~urllib3.util.retry.Retry` object for fine-grained control
over different types of retries.
Pass an integer number to retry connection errors that many times,
but no other types of errors. Pass zero to never retry.
If ``False``, then retries are disabled and any exception is raised
immediately. Also, instead of raising a MaxRetryError on redirects,
the redirect response will be returned.
:type retries: :class:`~urllib3.util.retry.Retry`, False, or an int.
:param redirect:
If True, automatically handle redirects (status codes 301, 302,
303, 307, 308). Each redirect counts as a retry. Disabling retries
will disable redirect, too.
:param assert_same_host:
If ``True``, will make sure that the host of the pool requests is
consistent else will raise HostChangedError. When ``False``, you can
use the pool on an HTTP proxy and request foreign hosts.
:param timeout:
If specified, overrides the default timeout for this one
request. It may be a float (in seconds) or an instance of
:class:`urllib3.util.Timeout`.
:param pool_timeout:
If set and the pool is set to block=True, then this method will
block for ``pool_timeout`` seconds and raise EmptyPoolError if no
connection is available within the time period.
:param release_conn:
If False, then the urlopen call will not release the connection
back into the pool once a response is received (but will release if
you read the entire contents of the response such as when
`preload_content=True`). This is useful if you're not preloading
the response's content immediately. You will need to call
``r.release_conn()`` on the response ``r`` to return the connection
back into the pool. If None, it takes the value of
``response_kw.get('preload_content', True)``.
:param chunked:
If True, urllib3 will send the body using chunked transfer
encoding. Otherwise, urllib3 will send the body using the standard
content-length form. Defaults to False.
:param int body_pos:
Position to seek to in file-like body in the event of a retry or
redirect. Typically this won't need to be set because urllib3 will
auto-populate the value when needed.
:param \\**response_kw:
Additional parameters are passed to
:meth:`urllib3.response.HTTPResponse.from_httplib`
"""
parsed_url = parse_url(url)
destination_scheme = parsed_url.scheme
if headers is None:
headers = self.headers
if not isinstance(retries, Retry):
retries = Retry.from_int(retries, redirect=redirect, default=self.retries)
if release_conn is None:
release_conn = response_kw.get("preload_content", True)
# Check host
if assert_same_host and not self.is_same_host(url):
raise HostChangedError(self, url, retries)
# Ensure that the URL we're connecting to is properly encoded
if url.startswith("/"):
url = six.ensure_str(_encode_target(url))
else:
url = six.ensure_str(parsed_url.url)
conn = None
# Track whether `conn` needs to be released before
# returning/raising/recursing. Update this variable if necessary, and
# leave `release_conn` constant throughout the function. That way, if
# the function recurses, the original value of `release_conn` will be
# passed down into the recursive call, and its value will be respected.
#
# See issue #651 [1] for details.
#
# [1] <https://github.com/urllib3/urllib3/issues/651>
release_this_conn = release_conn
http_tunnel_required = connection_requires_http_tunnel(
self.proxy, self.proxy_config, destination_scheme
)
# Merge the proxy headers. Only done when not using HTTP CONNECT. We
# have to copy the headers dict so we can safely change it without those
# changes being reflected in anyone else's copy.
if not http_tunnel_required:
headers = headers.copy()
headers.update(self.proxy_headers)
# Must keep the exception bound to a separate variable or else Python 3
# complains about UnboundLocalError.
err = None
# Keep track of whether we cleanly exited the except block. This
# ensures we do proper cleanup in finally.
clean_exit = False
# Rewind body position, if needed. Record current position
# for future rewinds in the event of a redirect/retry.
body_pos = set_file_position(body, body_pos)
try:
# Request a connection from the queue.
timeout_obj = self._get_timeout(timeout)
conn = self._get_conn(timeout=pool_timeout)
conn.timeout = timeout_obj.connect_timeout
is_new_proxy_conn = self.proxy is not None and not getattr(
conn, "sock", None
)
if is_new_proxy_conn and http_tunnel_required:
self._prepare_proxy(conn)
# Make the request on the httplib connection object.
httplib_response = self._make_request(
conn,
method,
url,
timeout=timeout_obj,
body=body,
headers=headers,
chunked=chunked,
)
# If we're going to release the connection in ``finally:``, then
# the response doesn't need to know about the connection. Otherwise
# it will also try to release it and we'll have a double-release
# mess.
response_conn = conn if not release_conn else None
# Pass method to Response for length checking
response_kw["request_method"] = method
# Import httplib's response into our own wrapper object
response = self.ResponseCls.from_httplib(
httplib_response,
pool=self,
connection=response_conn,
retries=retries,
**response_kw
)
# Everything went great!
clean_exit = True
except EmptyPoolError:
# Didn't get a connection from the pool, no need to clean up
clean_exit = True
release_this_conn = False
raise
except (
TimeoutError,
HTTPException,
SocketError,
ProtocolError,
BaseSSLError,
SSLError,
CertificateError,
) as e:
# Discard the connection for these exceptions. It will be
# replaced during the next _get_conn() call.
clean_exit = False
def _is_ssl_error_message_from_http_proxy(ssl_error):
# We're trying to detect the message 'WRONG_VERSION_NUMBER' but
# SSLErrors are kinda all over the place when it comes to the message,
# so we try to cover our bases here!
message = " ".join(re.split("[^a-z]", str(ssl_error).lower()))
return (
"wrong version number" in message or "unknown protocol" in message
)
# Try to detect a common user error with proxies which is to
# set an HTTP proxy to be HTTPS when it should be 'http://'
# (ie {'http': 'http://proxy', 'https': 'https://proxy'})
# Instead we add a nice error message and point to a URL.
if (
isinstance(e, BaseSSLError)
and self.proxy
and _is_ssl_error_message_from_http_proxy(e)
and conn.proxy
and conn.proxy.scheme == "https"
):
e = ProxyError(
"Your proxy appears to only use HTTP and not HTTPS, "
"try changing your proxy URL to be HTTP. See: "
"https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html"
"#https-proxy-error-http-proxy",
SSLError(e),
)
elif isinstance(e, (BaseSSLError, CertificateError)):
e = SSLError(e)
elif isinstance(e, (SocketError, NewConnectionError)) and self.proxy:
e = ProxyError("Cannot connect to proxy.", e)
elif isinstance(e, (SocketError, HTTPException)):
e = ProtocolError("Connection aborted.", e)
retries = retries.increment(
method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
)
retries.sleep()
# Keep track of the error for the retry warning.
err = e
finally:
if not clean_exit:
# We hit some kind of exception, handled or otherwise. We need
# to throw the connection away unless explicitly told not to.
# Close the connection, set the variable to None, and make sure
# we put the None back in the pool to avoid leaking it.
conn = conn and conn.close()
release_this_conn = True
if release_this_conn:
# Put the connection back to be reused. If the connection is
# expired then it will be None, which will get replaced with a
# fresh connection during _get_conn.
self._put_conn(conn)
if not conn:
# Try again
log.warning(
"Retrying (%r) after connection broken by '%r': %s", retries, err, url
)
return self.urlopen(
method,
url,
body,
headers,
retries,
redirect,
assert_same_host,
timeout=timeout,
pool_timeout=pool_timeout,
release_conn=release_conn,
chunked=chunked,
body_pos=body_pos,
**response_kw
)
# Handle redirect?
redirect_location = redirect and response.get_redirect_location()
if redirect_location:
if response.status == 303:
method = "GET"
try:
retries = retries.increment(method, url, response=response, _pool=self)
except MaxRetryError:
if retries.raise_on_redirect:
response.drain_conn()
raise
return response
response.drain_conn()
retries.sleep_for_retry(response)
log.debug("Redirecting %s -> %s", url, redirect_location)
return self.urlopen(
method,
redirect_location,
body,
headers,
retries=retries,
redirect=redirect,
assert_same_host=assert_same_host,
timeout=timeout,
pool_timeout=pool_timeout,
release_conn=release_conn,
chunked=chunked,
body_pos=body_pos,
**response_kw
)
# Check if we should retry the HTTP response.
has_retry_after = bool(response.headers.get("Retry-After"))
if retries.is_retry(method, response.status, has_retry_after):
try:
retries = retries.increment(method, url, response=response, _pool=self)
except MaxRetryError:
if retries.raise_on_status:
response.drain_conn()
raise
return response
response.drain_conn()
retries.sleep(response)
log.debug("Retry: %s", url)
return self.urlopen(
method,
url,
body,
headers,
retries=retries,
redirect=redirect,
assert_same_host=assert_same_host,
timeout=timeout,
pool_timeout=pool_timeout,
release_conn=release_conn,
chunked=chunked,
body_pos=body_pos,
**response_kw
)
return response
class HTTPSConnectionPool(HTTPConnectionPool):
"""
Same as :class:`.HTTPConnectionPool`, but HTTPS.
:class:`.HTTPSConnection` uses one of ``assert_fingerprint``,
``assert_hostname`` and ``host`` in this order to verify connections.
If ``assert_hostname`` is False, no verification is done.
The ``key_file``, ``cert_file``, ``cert_reqs``, ``ca_certs``,
``ca_cert_dir``, ``ssl_version``, ``key_password`` are only used if :mod:`ssl`
is available and are fed into :meth:`urllib3.util.ssl_wrap_socket` to upgrade
the connection socket into an SSL socket.
"""
scheme = "https"
ConnectionCls = HTTPSConnection
def __init__(
self,
host,
port=None,
strict=False,
timeout=Timeout.DEFAULT_TIMEOUT,
maxsize=1,
block=False,
headers=None,
retries=None,
_proxy=None,
_proxy_headers=None,
key_file=None,
cert_file=None,
cert_reqs=None,
key_password=None,
ca_certs=None,
ssl_version=None,
assert_hostname=None,
assert_fingerprint=None,
ca_cert_dir=None,
**conn_kw
):
HTTPConnectionPool.__init__(
self,
host,
port,
strict,
timeout,
maxsize,
block,
headers,
retries,
_proxy,
_proxy_headers,
**conn_kw
)
self.key_file = key_file
self.cert_file = cert_file
self.cert_reqs = cert_reqs
self.key_password = key_password
self.ca_certs = ca_certs
self.ca_cert_dir = ca_cert_dir
self.ssl_version = ssl_version
self.assert_hostname = assert_hostname
self.assert_fingerprint = assert_fingerprint
def _prepare_conn(self, conn):
"""
Prepare the ``connection`` for :meth:`urllib3.util.ssl_wrap_socket`
and establish the tunnel if proxy is used.
"""
if isinstance(conn, VerifiedHTTPSConnection):
conn.set_cert(
key_file=self.key_file,
key_password=self.key_password,
cert_file=self.cert_file,
cert_reqs=self.cert_reqs,
ca_certs=self.ca_certs,
ca_cert_dir=self.ca_cert_dir,
assert_hostname=self.assert_hostname,
assert_fingerprint=self.assert_fingerprint,
)
conn.ssl_version = self.ssl_version
return conn
def _prepare_proxy(self, conn):
"""
Establishes a tunnel connection through HTTP CONNECT.
Tunnel connection is established early because otherwise httplib would
improperly set Host: header to proxy's IP:port.
"""
conn.set_tunnel(self._proxy_host, self.port, self.proxy_headers)
if self.proxy.scheme == "https":
conn.tls_in_tls_required = True
conn.connect()
def _new_conn(self):
"""
Return a fresh :class:`http.client.HTTPSConnection`.
"""
self.num_connections += 1
log.debug(
"Starting new HTTPS connection (%d): %s:%s",
self.num_connections,
self.host,
self.port or "443",
)
if not self.ConnectionCls or self.ConnectionCls is DummyConnection:
raise SSLError(
"Can't connect to HTTPS URL because the SSL module is not available."
)
actual_host = self.host
actual_port = self.port
if self.proxy is not None:
actual_host = self.proxy.host
actual_port = self.proxy.port
conn = self.ConnectionCls(
host=actual_host,
port=actual_port,
timeout=self.timeout.connect_timeout,
strict=self.strict,
cert_file=self.cert_file,
key_file=self.key_file,
key_password=self.key_password,
**self.conn_kw
)
return self._prepare_conn(conn)
def _validate_conn(self, conn):
"""
Called right before a request is made, after the socket is created.
"""
super(HTTPSConnectionPool, self)._validate_conn(conn)
# Force connect early to allow us to validate the connection.
if not getattr(conn, "sock", None): # AppEngine might not have `.sock`
conn.connect()
if not conn.is_verified:
warnings.warn(
(
"Unverified HTTPS request is being made to host '%s'. "
"Adding certificate verification is strongly advised. See: "
"https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html"
"#ssl-warnings" % conn.host
),
InsecureRequestWarning,
)
if getattr(conn, "proxy_is_verified", None) is False:
warnings.warn(
(
"Unverified HTTPS connection done to an HTTPS proxy. "
"Adding certificate verification is strongly advised. See: "
"https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html"
"#ssl-warnings"
),
InsecureRequestWarning,
)
def connection_from_url(url, **kw):
"""
Given a url, return an :class:`.ConnectionPool` instance of its host.
This is a shortcut for not having to parse out the scheme, host, and port
of the url before creating an :class:`.ConnectionPool` instance.
:param url:
Absolute URL string that must include the scheme. Port is optional.
:param \\**kw:
Passes additional parameters to the constructor of the appropriate
:class:`.ConnectionPool`. Useful for specifying things like
timeout, maxsize, headers, etc.
Example::
>>> conn = connection_from_url('http://google.com/')
>>> r = conn.request('GET', '/')
"""
scheme, host, port = get_host(url)
port = port or port_by_scheme.get(scheme, 80)
if scheme == "https":
return HTTPSConnectionPool(host, port=port, **kw)
else:
return HTTPConnectionPool(host, port=port, **kw)
def _normalize_host(host, scheme):
"""
Normalize hosts for comparisons and use with sockets.
"""
host = normalize_host(host, scheme)
# httplib doesn't like it when we include brackets in IPv6 addresses
# Specifically, if we include brackets but also pass the port then
# httplib crazily doubles up the square brackets on the Host header.
# Instead, we need to make sure we never pass ``None`` as the port.
# However, for backward compatibility reasons we can't actually
# *assert* that. See http://bugs.python.org/issue28539
if host.startswith("[") and host.endswith("]"):
host = host[1:-1]
return host
def _close_pool_connections(pool):
"""Drains a queue of connections and closes each one."""
try:
while True:
conn = pool.get(block=False)
if conn:
conn.close()
except queue.Empty:
pass # Done.
| 39,990 | Python | 34.296558 | 106 | 0.58052 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/appengine.py | """
This module provides a pool manager that uses Google App Engine's
`URLFetch Service <https://cloud.google.com/appengine/docs/python/urlfetch>`_.
Example usage::
from urllib3 import PoolManager
from urllib3.contrib.appengine import AppEngineManager, is_appengine_sandbox
if is_appengine_sandbox():
# AppEngineManager uses AppEngine's URLFetch API behind the scenes
http = AppEngineManager()
else:
# PoolManager uses a socket-level API behind the scenes
http = PoolManager()
r = http.request('GET', 'https://google.com/')
There are `limitations <https://cloud.google.com/appengine/docs/python/\
urlfetch/#Python_Quotas_and_limits>`_ to the URLFetch service and it may not be
the best choice for your application. There are three options for using
urllib3 on Google App Engine:
1. You can use :class:`AppEngineManager` with URLFetch. URLFetch is
cost-effective in many circumstances as long as your usage is within the
limitations.
2. You can use a normal :class:`~urllib3.PoolManager` by enabling sockets.
Sockets also have `limitations and restrictions
<https://cloud.google.com/appengine/docs/python/sockets/\
#limitations-and-restrictions>`_ and have a lower free quota than URLFetch.
To use sockets, be sure to specify the following in your ``app.yaml``::
env_variables:
GAE_USE_SOCKETS_HTTPLIB : 'true'
3. If you are using `App Engine Flexible
<https://cloud.google.com/appengine/docs/flexible/>`_, you can use the standard
:class:`PoolManager` without any configuration or special environment variables.
"""
from __future__ import absolute_import
import io
import logging
import warnings
from ..exceptions import (
HTTPError,
HTTPWarning,
MaxRetryError,
ProtocolError,
SSLError,
TimeoutError,
)
from ..packages.six.moves.urllib.parse import urljoin
from ..request import RequestMethods
from ..response import HTTPResponse
from ..util.retry import Retry
from ..util.timeout import Timeout
from . import _appengine_environ
try:
from google.appengine.api import urlfetch
except ImportError:
urlfetch = None
log = logging.getLogger(__name__)
class AppEnginePlatformWarning(HTTPWarning):
pass
class AppEnginePlatformError(HTTPError):
pass
class AppEngineManager(RequestMethods):
"""
Connection manager for Google App Engine sandbox applications.
This manager uses the URLFetch service directly instead of using the
emulated httplib, and is subject to URLFetch limitations as described in
the App Engine documentation `here
<https://cloud.google.com/appengine/docs/python/urlfetch>`_.
Notably it will raise an :class:`AppEnginePlatformError` if:
* URLFetch is not available.
* If you attempt to use this on App Engine Flexible, as full socket
support is available.
* If a request size is more than 10 megabytes.
* If a response size is more than 32 megabytes.
* If you use an unsupported request method such as OPTIONS.
Beyond those cases, it will raise normal urllib3 errors.
"""
def __init__(
self,
headers=None,
retries=None,
validate_certificate=True,
urlfetch_retries=True,
):
if not urlfetch:
raise AppEnginePlatformError(
"URLFetch is not available in this environment."
)
warnings.warn(
"urllib3 is using URLFetch on Google App Engine sandbox instead "
"of sockets. To use sockets directly instead of URLFetch see "
"https://urllib3.readthedocs.io/en/1.26.x/reference/urllib3.contrib.html.",
AppEnginePlatformWarning,
)
RequestMethods.__init__(self, headers)
self.validate_certificate = validate_certificate
self.urlfetch_retries = urlfetch_retries
self.retries = retries or Retry.DEFAULT
def __enter__(self):
return self
def __exit__(self, exc_type, exc_val, exc_tb):
# Return False to re-raise any potential exceptions
return False
def urlopen(
self,
method,
url,
body=None,
headers=None,
retries=None,
redirect=True,
timeout=Timeout.DEFAULT_TIMEOUT,
**response_kw
):
retries = self._get_retries(retries, redirect)
try:
follow_redirects = redirect and retries.redirect != 0 and retries.total
response = urlfetch.fetch(
url,
payload=body,
method=method,
headers=headers or {},
allow_truncated=False,
follow_redirects=self.urlfetch_retries and follow_redirects,
deadline=self._get_absolute_timeout(timeout),
validate_certificate=self.validate_certificate,
)
except urlfetch.DeadlineExceededError as e:
raise TimeoutError(self, e)
except urlfetch.InvalidURLError as e:
if "too large" in str(e):
raise AppEnginePlatformError(
"URLFetch request too large, URLFetch only "
"supports requests up to 10mb in size.",
e,
)
raise ProtocolError(e)
except urlfetch.DownloadError as e:
if "Too many redirects" in str(e):
raise MaxRetryError(self, url, reason=e)
raise ProtocolError(e)
except urlfetch.ResponseTooLargeError as e:
raise AppEnginePlatformError(
"URLFetch response too large, URLFetch only supports"
"responses up to 32mb in size.",
e,
)
except urlfetch.SSLCertificateError as e:
raise SSLError(e)
except urlfetch.InvalidMethodError as e:
raise AppEnginePlatformError(
"URLFetch does not support method: %s" % method, e
)
http_response = self._urlfetch_response_to_http_response(
response, retries=retries, **response_kw
)
# Handle redirect?
redirect_location = redirect and http_response.get_redirect_location()
if redirect_location:
# Check for redirect response
if self.urlfetch_retries and retries.raise_on_redirect:
raise MaxRetryError(self, url, "too many redirects")
else:
if http_response.status == 303:
method = "GET"
try:
retries = retries.increment(
method, url, response=http_response, _pool=self
)
except MaxRetryError:
if retries.raise_on_redirect:
raise MaxRetryError(self, url, "too many redirects")
return http_response
retries.sleep_for_retry(http_response)
log.debug("Redirecting %s -> %s", url, redirect_location)
redirect_url = urljoin(url, redirect_location)
return self.urlopen(
method,
redirect_url,
body,
headers,
retries=retries,
redirect=redirect,
timeout=timeout,
**response_kw
)
# Check if we should retry the HTTP response.
has_retry_after = bool(http_response.headers.get("Retry-After"))
if retries.is_retry(method, http_response.status, has_retry_after):
retries = retries.increment(method, url, response=http_response, _pool=self)
log.debug("Retry: %s", url)
retries.sleep(http_response)
return self.urlopen(
method,
url,
body=body,
headers=headers,
retries=retries,
redirect=redirect,
timeout=timeout,
**response_kw
)
return http_response
def _urlfetch_response_to_http_response(self, urlfetch_resp, **response_kw):
if is_prod_appengine():
# Production GAE handles deflate encoding automatically, but does
# not remove the encoding header.
content_encoding = urlfetch_resp.headers.get("content-encoding")
if content_encoding == "deflate":
del urlfetch_resp.headers["content-encoding"]
transfer_encoding = urlfetch_resp.headers.get("transfer-encoding")
# We have a full response's content,
# so let's make sure we don't report ourselves as chunked data.
if transfer_encoding == "chunked":
encodings = transfer_encoding.split(",")
encodings.remove("chunked")
urlfetch_resp.headers["transfer-encoding"] = ",".join(encodings)
original_response = HTTPResponse(
# In order for decoding to work, we must present the content as
# a file-like object.
body=io.BytesIO(urlfetch_resp.content),
msg=urlfetch_resp.header_msg,
headers=urlfetch_resp.headers,
status=urlfetch_resp.status_code,
**response_kw
)
return HTTPResponse(
body=io.BytesIO(urlfetch_resp.content),
headers=urlfetch_resp.headers,
status=urlfetch_resp.status_code,
original_response=original_response,
**response_kw
)
def _get_absolute_timeout(self, timeout):
if timeout is Timeout.DEFAULT_TIMEOUT:
return None # Defer to URLFetch's default.
if isinstance(timeout, Timeout):
if timeout._read is not None or timeout._connect is not None:
warnings.warn(
"URLFetch does not support granular timeout settings, "
"reverting to total or default URLFetch timeout.",
AppEnginePlatformWarning,
)
return timeout.total
return timeout
def _get_retries(self, retries, redirect):
if not isinstance(retries, Retry):
retries = Retry.from_int(retries, redirect=redirect, default=self.retries)
if retries.connect or retries.read or retries.redirect:
warnings.warn(
"URLFetch only supports total retries and does not "
"recognize connect, read, or redirect retry parameters.",
AppEnginePlatformWarning,
)
return retries
# Alias methods from _appengine_environ to maintain public API interface.
is_appengine = _appengine_environ.is_appengine
is_appengine_sandbox = _appengine_environ.is_appengine_sandbox
is_local_appengine = _appengine_environ.is_local_appengine
is_prod_appengine = _appengine_environ.is_prod_appengine
is_prod_appengine_mvms = _appengine_environ.is_prod_appengine_mvms
| 11,012 | Python | 33.961905 | 88 | 0.612241 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/socks.py | # -*- coding: utf-8 -*-
"""
This module contains provisional support for SOCKS proxies from within
urllib3. This module supports SOCKS4, SOCKS4A (an extension of SOCKS4), and
SOCKS5. To enable its functionality, either install PySocks or install this
module with the ``socks`` extra.
The SOCKS implementation supports the full range of urllib3 features. It also
supports the following SOCKS features:
- SOCKS4A (``proxy_url='socks4a://...``)
- SOCKS4 (``proxy_url='socks4://...``)
- SOCKS5 with remote DNS (``proxy_url='socks5h://...``)
- SOCKS5 with local DNS (``proxy_url='socks5://...``)
- Usernames and passwords for the SOCKS proxy
.. note::
It is recommended to use ``socks5h://`` or ``socks4a://`` schemes in
your ``proxy_url`` to ensure that DNS resolution is done from the remote
server instead of client-side when connecting to a domain name.
SOCKS4 supports IPv4 and domain names with the SOCKS4A extension. SOCKS5
supports IPv4, IPv6, and domain names.
When connecting to a SOCKS4 proxy the ``username`` portion of the ``proxy_url``
will be sent as the ``userid`` section of the SOCKS request:
.. code-block:: python
proxy_url="socks4a://<userid>@proxy-host"
When connecting to a SOCKS5 proxy the ``username`` and ``password`` portion
of the ``proxy_url`` will be sent as the username/password to authenticate
with the proxy:
.. code-block:: python
proxy_url="socks5h://<username>:<password>@proxy-host"
"""
from __future__ import absolute_import
try:
import socks
except ImportError:
import warnings
from ..exceptions import DependencyWarning
warnings.warn(
(
"SOCKS support in urllib3 requires the installation of optional "
"dependencies: specifically, PySocks. For more information, see "
"https://urllib3.readthedocs.io/en/1.26.x/contrib.html#socks-proxies"
),
DependencyWarning,
)
raise
from socket import error as SocketError
from socket import timeout as SocketTimeout
from ..connection import HTTPConnection, HTTPSConnection
from ..connectionpool import HTTPConnectionPool, HTTPSConnectionPool
from ..exceptions import ConnectTimeoutError, NewConnectionError
from ..poolmanager import PoolManager
from ..util.url import parse_url
try:
import ssl
except ImportError:
ssl = None
class SOCKSConnection(HTTPConnection):
"""
A plain-text HTTP connection that connects via a SOCKS proxy.
"""
def __init__(self, *args, **kwargs):
self._socks_options = kwargs.pop("_socks_options")
super(SOCKSConnection, self).__init__(*args, **kwargs)
def _new_conn(self):
"""
Establish a new connection via the SOCKS proxy.
"""
extra_kw = {}
if self.source_address:
extra_kw["source_address"] = self.source_address
if self.socket_options:
extra_kw["socket_options"] = self.socket_options
try:
conn = socks.create_connection(
(self.host, self.port),
proxy_type=self._socks_options["socks_version"],
proxy_addr=self._socks_options["proxy_host"],
proxy_port=self._socks_options["proxy_port"],
proxy_username=self._socks_options["username"],
proxy_password=self._socks_options["password"],
proxy_rdns=self._socks_options["rdns"],
timeout=self.timeout,
**extra_kw
)
except SocketTimeout:
raise ConnectTimeoutError(
self,
"Connection to %s timed out. (connect timeout=%s)"
% (self.host, self.timeout),
)
except socks.ProxyError as e:
# This is fragile as hell, but it seems to be the only way to raise
# useful errors here.
if e.socket_err:
error = e.socket_err
if isinstance(error, SocketTimeout):
raise ConnectTimeoutError(
self,
"Connection to %s timed out. (connect timeout=%s)"
% (self.host, self.timeout),
)
else:
raise NewConnectionError(
self, "Failed to establish a new connection: %s" % error
)
else:
raise NewConnectionError(
self, "Failed to establish a new connection: %s" % e
)
except SocketError as e: # Defensive: PySocks should catch all these.
raise NewConnectionError(
self, "Failed to establish a new connection: %s" % e
)
return conn
# We don't need to duplicate the Verified/Unverified distinction from
# urllib3/connection.py here because the HTTPSConnection will already have been
# correctly set to either the Verified or Unverified form by that module. This
# means the SOCKSHTTPSConnection will automatically be the correct type.
class SOCKSHTTPSConnection(SOCKSConnection, HTTPSConnection):
pass
class SOCKSHTTPConnectionPool(HTTPConnectionPool):
ConnectionCls = SOCKSConnection
class SOCKSHTTPSConnectionPool(HTTPSConnectionPool):
ConnectionCls = SOCKSHTTPSConnection
class SOCKSProxyManager(PoolManager):
"""
A version of the urllib3 ProxyManager that routes connections via the
defined SOCKS proxy.
"""
pool_classes_by_scheme = {
"http": SOCKSHTTPConnectionPool,
"https": SOCKSHTTPSConnectionPool,
}
def __init__(
self,
proxy_url,
username=None,
password=None,
num_pools=10,
headers=None,
**connection_pool_kw
):
parsed = parse_url(proxy_url)
if username is None and password is None and parsed.auth is not None:
split = parsed.auth.split(":")
if len(split) == 2:
username, password = split
if parsed.scheme == "socks5":
socks_version = socks.PROXY_TYPE_SOCKS5
rdns = False
elif parsed.scheme == "socks5h":
socks_version = socks.PROXY_TYPE_SOCKS5
rdns = True
elif parsed.scheme == "socks4":
socks_version = socks.PROXY_TYPE_SOCKS4
rdns = False
elif parsed.scheme == "socks4a":
socks_version = socks.PROXY_TYPE_SOCKS4
rdns = True
else:
raise ValueError("Unable to determine SOCKS version from %s" % proxy_url)
self.proxy_url = proxy_url
socks_options = {
"socks_version": socks_version,
"proxy_host": parsed.host,
"proxy_port": parsed.port,
"username": username,
"password": password,
"rdns": rdns,
}
connection_pool_kw["_socks_options"] = socks_options
super(SOCKSProxyManager, self).__init__(
num_pools, headers, **connection_pool_kw
)
self.pool_classes_by_scheme = SOCKSProxyManager.pool_classes_by_scheme
| 7,097 | Python | 31.709677 | 85 | 0.61364 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/pyopenssl.py | """
TLS with SNI_-support for Python 2. Follow these instructions if you would
like to verify TLS certificates in Python 2. Note, the default libraries do
*not* do certificate checking; you need to do additional work to validate
certificates yourself.
This needs the following packages installed:
* `pyOpenSSL`_ (tested with 16.0.0)
* `cryptography`_ (minimum 1.3.4, from pyopenssl)
* `idna`_ (minimum 2.0, from cryptography)
However, pyopenssl depends on cryptography, which depends on idna, so while we
use all three directly here we end up having relatively few packages required.
You can install them with the following command:
.. code-block:: bash
$ python -m pip install pyopenssl cryptography idna
To activate certificate checking, call
:func:`~urllib3.contrib.pyopenssl.inject_into_urllib3` from your Python code
before you begin making HTTP requests. This can be done in a ``sitecustomize``
module, or at any other time before your application begins using ``urllib3``,
like this:
.. code-block:: python
try:
import urllib3.contrib.pyopenssl
urllib3.contrib.pyopenssl.inject_into_urllib3()
except ImportError:
pass
Now you can use :mod:`urllib3` as you normally would, and it will support SNI
when the required modules are installed.
Activating this module also has the positive side effect of disabling SSL/TLS
compression in Python 2 (see `CRIME attack`_).
.. _sni: https://en.wikipedia.org/wiki/Server_Name_Indication
.. _crime attack: https://en.wikipedia.org/wiki/CRIME_(security_exploit)
.. _pyopenssl: https://www.pyopenssl.org
.. _cryptography: https://cryptography.io
.. _idna: https://github.com/kjd/idna
"""
from __future__ import absolute_import
import OpenSSL.crypto
import OpenSSL.SSL
from cryptography import x509
from cryptography.hazmat.backends.openssl import backend as openssl_backend
try:
from cryptography.x509 import UnsupportedExtension
except ImportError:
# UnsupportedExtension is gone in cryptography >= 2.1.0
class UnsupportedExtension(Exception):
pass
from io import BytesIO
from socket import error as SocketError
from socket import timeout
try: # Platform-specific: Python 2
from socket import _fileobject
except ImportError: # Platform-specific: Python 3
_fileobject = None
from ..packages.backports.makefile import backport_makefile
import logging
import ssl
import sys
import warnings
from .. import util
from ..packages import six
from ..util.ssl_ import PROTOCOL_TLS_CLIENT
warnings.warn(
"'urllib3.contrib.pyopenssl' module is deprecated and will be removed "
"in a future release of urllib3 2.x. Read more in this issue: "
"https://github.com/urllib3/urllib3/issues/2680",
category=DeprecationWarning,
stacklevel=2,
)
__all__ = ["inject_into_urllib3", "extract_from_urllib3"]
# SNI always works.
HAS_SNI = True
# Map from urllib3 to PyOpenSSL compatible parameter-values.
_openssl_versions = {
util.PROTOCOL_TLS: OpenSSL.SSL.SSLv23_METHOD,
PROTOCOL_TLS_CLIENT: OpenSSL.SSL.SSLv23_METHOD,
ssl.PROTOCOL_TLSv1: OpenSSL.SSL.TLSv1_METHOD,
}
if hasattr(ssl, "PROTOCOL_SSLv3") and hasattr(OpenSSL.SSL, "SSLv3_METHOD"):
_openssl_versions[ssl.PROTOCOL_SSLv3] = OpenSSL.SSL.SSLv3_METHOD
if hasattr(ssl, "PROTOCOL_TLSv1_1") and hasattr(OpenSSL.SSL, "TLSv1_1_METHOD"):
_openssl_versions[ssl.PROTOCOL_TLSv1_1] = OpenSSL.SSL.TLSv1_1_METHOD
if hasattr(ssl, "PROTOCOL_TLSv1_2") and hasattr(OpenSSL.SSL, "TLSv1_2_METHOD"):
_openssl_versions[ssl.PROTOCOL_TLSv1_2] = OpenSSL.SSL.TLSv1_2_METHOD
_stdlib_to_openssl_verify = {
ssl.CERT_NONE: OpenSSL.SSL.VERIFY_NONE,
ssl.CERT_OPTIONAL: OpenSSL.SSL.VERIFY_PEER,
ssl.CERT_REQUIRED: OpenSSL.SSL.VERIFY_PEER
+ OpenSSL.SSL.VERIFY_FAIL_IF_NO_PEER_CERT,
}
_openssl_to_stdlib_verify = dict((v, k) for k, v in _stdlib_to_openssl_verify.items())
# OpenSSL will only write 16K at a time
SSL_WRITE_BLOCKSIZE = 16384
orig_util_HAS_SNI = util.HAS_SNI
orig_util_SSLContext = util.ssl_.SSLContext
log = logging.getLogger(__name__)
def inject_into_urllib3():
"Monkey-patch urllib3 with PyOpenSSL-backed SSL-support."
_validate_dependencies_met()
util.SSLContext = PyOpenSSLContext
util.ssl_.SSLContext = PyOpenSSLContext
util.HAS_SNI = HAS_SNI
util.ssl_.HAS_SNI = HAS_SNI
util.IS_PYOPENSSL = True
util.ssl_.IS_PYOPENSSL = True
def extract_from_urllib3():
"Undo monkey-patching by :func:`inject_into_urllib3`."
util.SSLContext = orig_util_SSLContext
util.ssl_.SSLContext = orig_util_SSLContext
util.HAS_SNI = orig_util_HAS_SNI
util.ssl_.HAS_SNI = orig_util_HAS_SNI
util.IS_PYOPENSSL = False
util.ssl_.IS_PYOPENSSL = False
def _validate_dependencies_met():
"""
Verifies that PyOpenSSL's package-level dependencies have been met.
Throws `ImportError` if they are not met.
"""
# Method added in `cryptography==1.1`; not available in older versions
from cryptography.x509.extensions import Extensions
if getattr(Extensions, "get_extension_for_class", None) is None:
raise ImportError(
"'cryptography' module missing required functionality. "
"Try upgrading to v1.3.4 or newer."
)
# pyOpenSSL 0.14 and above use cryptography for OpenSSL bindings. The _x509
# attribute is only present on those versions.
from OpenSSL.crypto import X509
x509 = X509()
if getattr(x509, "_x509", None) is None:
raise ImportError(
"'pyOpenSSL' module missing required functionality. "
"Try upgrading to v0.14 or newer."
)
def _dnsname_to_stdlib(name):
"""
Converts a dNSName SubjectAlternativeName field to the form used by the
standard library on the given Python version.
Cryptography produces a dNSName as a unicode string that was idna-decoded
from ASCII bytes. We need to idna-encode that string to get it back, and
then on Python 3 we also need to convert to unicode via UTF-8 (the stdlib
uses PyUnicode_FromStringAndSize on it, which decodes via UTF-8).
If the name cannot be idna-encoded then we return None signalling that
the name given should be skipped.
"""
def idna_encode(name):
"""
Borrowed wholesale from the Python Cryptography Project. It turns out
that we can't just safely call `idna.encode`: it can explode for
wildcard names. This avoids that problem.
"""
import idna
try:
for prefix in [u"*.", u"."]:
if name.startswith(prefix):
name = name[len(prefix) :]
return prefix.encode("ascii") + idna.encode(name)
return idna.encode(name)
except idna.core.IDNAError:
return None
# Don't send IPv6 addresses through the IDNA encoder.
if ":" in name:
return name
name = idna_encode(name)
if name is None:
return None
elif sys.version_info >= (3, 0):
name = name.decode("utf-8")
return name
def get_subj_alt_name(peer_cert):
"""
Given an PyOpenSSL certificate, provides all the subject alternative names.
"""
# Pass the cert to cryptography, which has much better APIs for this.
if hasattr(peer_cert, "to_cryptography"):
cert = peer_cert.to_cryptography()
else:
der = OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_ASN1, peer_cert)
cert = x509.load_der_x509_certificate(der, openssl_backend)
# We want to find the SAN extension. Ask Cryptography to locate it (it's
# faster than looping in Python)
try:
ext = cert.extensions.get_extension_for_class(x509.SubjectAlternativeName).value
except x509.ExtensionNotFound:
# No such extension, return the empty list.
return []
except (
x509.DuplicateExtension,
UnsupportedExtension,
x509.UnsupportedGeneralNameType,
UnicodeError,
) as e:
# A problem has been found with the quality of the certificate. Assume
# no SAN field is present.
log.warning(
"A problem was encountered with the certificate that prevented "
"urllib3 from finding the SubjectAlternativeName field. This can "
"affect certificate validation. The error was %s",
e,
)
return []
# We want to return dNSName and iPAddress fields. We need to cast the IPs
# back to strings because the match_hostname function wants them as
# strings.
# Sadly the DNS names need to be idna encoded and then, on Python 3, UTF-8
# decoded. This is pretty frustrating, but that's what the standard library
# does with certificates, and so we need to attempt to do the same.
# We also want to skip over names which cannot be idna encoded.
names = [
("DNS", name)
for name in map(_dnsname_to_stdlib, ext.get_values_for_type(x509.DNSName))
if name is not None
]
names.extend(
("IP Address", str(name)) for name in ext.get_values_for_type(x509.IPAddress)
)
return names
class WrappedSocket(object):
"""API-compatibility wrapper for Python OpenSSL's Connection-class.
Note: _makefile_refs, _drop() and _reuse() are needed for the garbage
collector of pypy.
"""
def __init__(self, connection, socket, suppress_ragged_eofs=True):
self.connection = connection
self.socket = socket
self.suppress_ragged_eofs = suppress_ragged_eofs
self._makefile_refs = 0
self._closed = False
def fileno(self):
return self.socket.fileno()
# Copy-pasted from Python 3.5 source code
def _decref_socketios(self):
if self._makefile_refs > 0:
self._makefile_refs -= 1
if self._closed:
self.close()
def recv(self, *args, **kwargs):
try:
data = self.connection.recv(*args, **kwargs)
except OpenSSL.SSL.SysCallError as e:
if self.suppress_ragged_eofs and e.args == (-1, "Unexpected EOF"):
return b""
else:
raise SocketError(str(e))
except OpenSSL.SSL.ZeroReturnError:
if self.connection.get_shutdown() == OpenSSL.SSL.RECEIVED_SHUTDOWN:
return b""
else:
raise
except OpenSSL.SSL.WantReadError:
if not util.wait_for_read(self.socket, self.socket.gettimeout()):
raise timeout("The read operation timed out")
else:
return self.recv(*args, **kwargs)
# TLS 1.3 post-handshake authentication
except OpenSSL.SSL.Error as e:
raise ssl.SSLError("read error: %r" % e)
else:
return data
def recv_into(self, *args, **kwargs):
try:
return self.connection.recv_into(*args, **kwargs)
except OpenSSL.SSL.SysCallError as e:
if self.suppress_ragged_eofs and e.args == (-1, "Unexpected EOF"):
return 0
else:
raise SocketError(str(e))
except OpenSSL.SSL.ZeroReturnError:
if self.connection.get_shutdown() == OpenSSL.SSL.RECEIVED_SHUTDOWN:
return 0
else:
raise
except OpenSSL.SSL.WantReadError:
if not util.wait_for_read(self.socket, self.socket.gettimeout()):
raise timeout("The read operation timed out")
else:
return self.recv_into(*args, **kwargs)
# TLS 1.3 post-handshake authentication
except OpenSSL.SSL.Error as e:
raise ssl.SSLError("read error: %r" % e)
def settimeout(self, timeout):
return self.socket.settimeout(timeout)
def _send_until_done(self, data):
while True:
try:
return self.connection.send(data)
except OpenSSL.SSL.WantWriteError:
if not util.wait_for_write(self.socket, self.socket.gettimeout()):
raise timeout()
continue
except OpenSSL.SSL.SysCallError as e:
raise SocketError(str(e))
def sendall(self, data):
total_sent = 0
while total_sent < len(data):
sent = self._send_until_done(
data[total_sent : total_sent + SSL_WRITE_BLOCKSIZE]
)
total_sent += sent
def shutdown(self):
# FIXME rethrow compatible exceptions should we ever use this
self.connection.shutdown()
def close(self):
if self._makefile_refs < 1:
try:
self._closed = True
return self.connection.close()
except OpenSSL.SSL.Error:
return
else:
self._makefile_refs -= 1
def getpeercert(self, binary_form=False):
x509 = self.connection.get_peer_certificate()
if not x509:
return x509
if binary_form:
return OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_ASN1, x509)
return {
"subject": ((("commonName", x509.get_subject().CN),),),
"subjectAltName": get_subj_alt_name(x509),
}
def version(self):
return self.connection.get_protocol_version_name()
def _reuse(self):
self._makefile_refs += 1
def _drop(self):
if self._makefile_refs < 1:
self.close()
else:
self._makefile_refs -= 1
if _fileobject: # Platform-specific: Python 2
def makefile(self, mode, bufsize=-1):
self._makefile_refs += 1
return _fileobject(self, mode, bufsize, close=True)
else: # Platform-specific: Python 3
makefile = backport_makefile
WrappedSocket.makefile = makefile
class PyOpenSSLContext(object):
"""
I am a wrapper class for the PyOpenSSL ``Context`` object. I am responsible
for translating the interface of the standard library ``SSLContext`` object
to calls into PyOpenSSL.
"""
def __init__(self, protocol):
self.protocol = _openssl_versions[protocol]
self._ctx = OpenSSL.SSL.Context(self.protocol)
self._options = 0
self.check_hostname = False
@property
def options(self):
return self._options
@options.setter
def options(self, value):
self._options = value
self._ctx.set_options(value)
@property
def verify_mode(self):
return _openssl_to_stdlib_verify[self._ctx.get_verify_mode()]
@verify_mode.setter
def verify_mode(self, value):
self._ctx.set_verify(_stdlib_to_openssl_verify[value], _verify_callback)
def set_default_verify_paths(self):
self._ctx.set_default_verify_paths()
def set_ciphers(self, ciphers):
if isinstance(ciphers, six.text_type):
ciphers = ciphers.encode("utf-8")
self._ctx.set_cipher_list(ciphers)
def load_verify_locations(self, cafile=None, capath=None, cadata=None):
if cafile is not None:
cafile = cafile.encode("utf-8")
if capath is not None:
capath = capath.encode("utf-8")
try:
self._ctx.load_verify_locations(cafile, capath)
if cadata is not None:
self._ctx.load_verify_locations(BytesIO(cadata))
except OpenSSL.SSL.Error as e:
raise ssl.SSLError("unable to load trusted certificates: %r" % e)
def load_cert_chain(self, certfile, keyfile=None, password=None):
self._ctx.use_certificate_chain_file(certfile)
if password is not None:
if not isinstance(password, six.binary_type):
password = password.encode("utf-8")
self._ctx.set_passwd_cb(lambda *_: password)
self._ctx.use_privatekey_file(keyfile or certfile)
def set_alpn_protocols(self, protocols):
protocols = [six.ensure_binary(p) for p in protocols]
return self._ctx.set_alpn_protos(protocols)
def wrap_socket(
self,
sock,
server_side=False,
do_handshake_on_connect=True,
suppress_ragged_eofs=True,
server_hostname=None,
):
cnx = OpenSSL.SSL.Connection(self._ctx, sock)
if isinstance(server_hostname, six.text_type): # Platform-specific: Python 3
server_hostname = server_hostname.encode("utf-8")
if server_hostname is not None:
cnx.set_tlsext_host_name(server_hostname)
cnx.set_connect_state()
while True:
try:
cnx.do_handshake()
except OpenSSL.SSL.WantReadError:
if not util.wait_for_read(sock, sock.gettimeout()):
raise timeout("select timed out")
continue
except OpenSSL.SSL.Error as e:
raise ssl.SSLError("bad handshake: %r" % e)
break
return WrappedSocket(cnx, sock)
def _verify_callback(cnx, x509, err_no, err_depth, return_code):
return err_no == 0
| 17,055 | Python | 31.863198 | 88 | 0.640575 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/securetransport.py | """
SecureTranport support for urllib3 via ctypes.
This makes platform-native TLS available to urllib3 users on macOS without the
use of a compiler. This is an important feature because the Python Package
Index is moving to become a TLSv1.2-or-higher server, and the default OpenSSL
that ships with macOS is not capable of doing TLSv1.2. The only way to resolve
this is to give macOS users an alternative solution to the problem, and that
solution is to use SecureTransport.
We use ctypes here because this solution must not require a compiler. That's
because pip is not allowed to require a compiler either.
This is not intended to be a seriously long-term solution to this problem.
The hope is that PEP 543 will eventually solve this issue for us, at which
point we can retire this contrib module. But in the short term, we need to
solve the impending tire fire that is Python on Mac without this kind of
contrib module. So...here we are.
To use this module, simply import and inject it::
import urllib3.contrib.securetransport
urllib3.contrib.securetransport.inject_into_urllib3()
Happy TLSing!
This code is a bastardised version of the code found in Will Bond's oscrypto
library. An enormous debt is owed to him for blazing this trail for us. For
that reason, this code should be considered to be covered both by urllib3's
license and by oscrypto's:
.. code-block::
Copyright (c) 2015-2016 Will Bond <[email protected]>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
"""
from __future__ import absolute_import
import contextlib
import ctypes
import errno
import os.path
import shutil
import socket
import ssl
import struct
import threading
import weakref
import six
from .. import util
from ..util.ssl_ import PROTOCOL_TLS_CLIENT
from ._securetransport.bindings import CoreFoundation, Security, SecurityConst
from ._securetransport.low_level import (
_assert_no_error,
_build_tls_unknown_ca_alert,
_cert_array_from_pem,
_create_cfstring_array,
_load_client_cert_chain,
_temporary_keychain,
)
try: # Platform-specific: Python 2
from socket import _fileobject
except ImportError: # Platform-specific: Python 3
_fileobject = None
from ..packages.backports.makefile import backport_makefile
__all__ = ["inject_into_urllib3", "extract_from_urllib3"]
# SNI always works
HAS_SNI = True
orig_util_HAS_SNI = util.HAS_SNI
orig_util_SSLContext = util.ssl_.SSLContext
# This dictionary is used by the read callback to obtain a handle to the
# calling wrapped socket. This is a pretty silly approach, but for now it'll
# do. I feel like I should be able to smuggle a handle to the wrapped socket
# directly in the SSLConnectionRef, but for now this approach will work I
# guess.
#
# We need to lock around this structure for inserts, but we don't do it for
# reads/writes in the callbacks. The reasoning here goes as follows:
#
# 1. It is not possible to call into the callbacks before the dictionary is
# populated, so once in the callback the id must be in the dictionary.
# 2. The callbacks don't mutate the dictionary, they only read from it, and
# so cannot conflict with any of the insertions.
#
# This is good: if we had to lock in the callbacks we'd drastically slow down
# the performance of this code.
_connection_refs = weakref.WeakValueDictionary()
_connection_ref_lock = threading.Lock()
# Limit writes to 16kB. This is OpenSSL's limit, but we'll cargo-cult it over
# for no better reason than we need *a* limit, and this one is right there.
SSL_WRITE_BLOCKSIZE = 16384
# This is our equivalent of util.ssl_.DEFAULT_CIPHERS, but expanded out to
# individual cipher suites. We need to do this because this is how
# SecureTransport wants them.
CIPHER_SUITES = [
SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
SecurityConst.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
SecurityConst.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
SecurityConst.TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,
SecurityConst.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
SecurityConst.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
SecurityConst.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
SecurityConst.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
SecurityConst.TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
SecurityConst.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
SecurityConst.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
SecurityConst.TLS_AES_256_GCM_SHA384,
SecurityConst.TLS_AES_128_GCM_SHA256,
SecurityConst.TLS_RSA_WITH_AES_256_GCM_SHA384,
SecurityConst.TLS_RSA_WITH_AES_128_GCM_SHA256,
SecurityConst.TLS_AES_128_CCM_8_SHA256,
SecurityConst.TLS_AES_128_CCM_SHA256,
SecurityConst.TLS_RSA_WITH_AES_256_CBC_SHA256,
SecurityConst.TLS_RSA_WITH_AES_128_CBC_SHA256,
SecurityConst.TLS_RSA_WITH_AES_256_CBC_SHA,
SecurityConst.TLS_RSA_WITH_AES_128_CBC_SHA,
]
# Basically this is simple: for PROTOCOL_SSLv23 we turn it into a low of
# TLSv1 and a high of TLSv1.2. For everything else, we pin to that version.
# TLSv1 to 1.2 are supported on macOS 10.8+
_protocol_to_min_max = {
util.PROTOCOL_TLS: (SecurityConst.kTLSProtocol1, SecurityConst.kTLSProtocol12),
PROTOCOL_TLS_CLIENT: (SecurityConst.kTLSProtocol1, SecurityConst.kTLSProtocol12),
}
if hasattr(ssl, "PROTOCOL_SSLv2"):
_protocol_to_min_max[ssl.PROTOCOL_SSLv2] = (
SecurityConst.kSSLProtocol2,
SecurityConst.kSSLProtocol2,
)
if hasattr(ssl, "PROTOCOL_SSLv3"):
_protocol_to_min_max[ssl.PROTOCOL_SSLv3] = (
SecurityConst.kSSLProtocol3,
SecurityConst.kSSLProtocol3,
)
if hasattr(ssl, "PROTOCOL_TLSv1"):
_protocol_to_min_max[ssl.PROTOCOL_TLSv1] = (
SecurityConst.kTLSProtocol1,
SecurityConst.kTLSProtocol1,
)
if hasattr(ssl, "PROTOCOL_TLSv1_1"):
_protocol_to_min_max[ssl.PROTOCOL_TLSv1_1] = (
SecurityConst.kTLSProtocol11,
SecurityConst.kTLSProtocol11,
)
if hasattr(ssl, "PROTOCOL_TLSv1_2"):
_protocol_to_min_max[ssl.PROTOCOL_TLSv1_2] = (
SecurityConst.kTLSProtocol12,
SecurityConst.kTLSProtocol12,
)
def inject_into_urllib3():
"""
Monkey-patch urllib3 with SecureTransport-backed SSL-support.
"""
util.SSLContext = SecureTransportContext
util.ssl_.SSLContext = SecureTransportContext
util.HAS_SNI = HAS_SNI
util.ssl_.HAS_SNI = HAS_SNI
util.IS_SECURETRANSPORT = True
util.ssl_.IS_SECURETRANSPORT = True
def extract_from_urllib3():
"""
Undo monkey-patching by :func:`inject_into_urllib3`.
"""
util.SSLContext = orig_util_SSLContext
util.ssl_.SSLContext = orig_util_SSLContext
util.HAS_SNI = orig_util_HAS_SNI
util.ssl_.HAS_SNI = orig_util_HAS_SNI
util.IS_SECURETRANSPORT = False
util.ssl_.IS_SECURETRANSPORT = False
def _read_callback(connection_id, data_buffer, data_length_pointer):
"""
SecureTransport read callback. This is called by ST to request that data
be returned from the socket.
"""
wrapped_socket = None
try:
wrapped_socket = _connection_refs.get(connection_id)
if wrapped_socket is None:
return SecurityConst.errSSLInternal
base_socket = wrapped_socket.socket
requested_length = data_length_pointer[0]
timeout = wrapped_socket.gettimeout()
error = None
read_count = 0
try:
while read_count < requested_length:
if timeout is None or timeout >= 0:
if not util.wait_for_read(base_socket, timeout):
raise socket.error(errno.EAGAIN, "timed out")
remaining = requested_length - read_count
buffer = (ctypes.c_char * remaining).from_address(
data_buffer + read_count
)
chunk_size = base_socket.recv_into(buffer, remaining)
read_count += chunk_size
if not chunk_size:
if not read_count:
return SecurityConst.errSSLClosedGraceful
break
except (socket.error) as e:
error = e.errno
if error is not None and error != errno.EAGAIN:
data_length_pointer[0] = read_count
if error == errno.ECONNRESET or error == errno.EPIPE:
return SecurityConst.errSSLClosedAbort
raise
data_length_pointer[0] = read_count
if read_count != requested_length:
return SecurityConst.errSSLWouldBlock
return 0
except Exception as e:
if wrapped_socket is not None:
wrapped_socket._exception = e
return SecurityConst.errSSLInternal
def _write_callback(connection_id, data_buffer, data_length_pointer):
"""
SecureTransport write callback. This is called by ST to request that data
actually be sent on the network.
"""
wrapped_socket = None
try:
wrapped_socket = _connection_refs.get(connection_id)
if wrapped_socket is None:
return SecurityConst.errSSLInternal
base_socket = wrapped_socket.socket
bytes_to_write = data_length_pointer[0]
data = ctypes.string_at(data_buffer, bytes_to_write)
timeout = wrapped_socket.gettimeout()
error = None
sent = 0
try:
while sent < bytes_to_write:
if timeout is None or timeout >= 0:
if not util.wait_for_write(base_socket, timeout):
raise socket.error(errno.EAGAIN, "timed out")
chunk_sent = base_socket.send(data)
sent += chunk_sent
# This has some needless copying here, but I'm not sure there's
# much value in optimising this data path.
data = data[chunk_sent:]
except (socket.error) as e:
error = e.errno
if error is not None and error != errno.EAGAIN:
data_length_pointer[0] = sent
if error == errno.ECONNRESET or error == errno.EPIPE:
return SecurityConst.errSSLClosedAbort
raise
data_length_pointer[0] = sent
if sent != bytes_to_write:
return SecurityConst.errSSLWouldBlock
return 0
except Exception as e:
if wrapped_socket is not None:
wrapped_socket._exception = e
return SecurityConst.errSSLInternal
# We need to keep these two objects references alive: if they get GC'd while
# in use then SecureTransport could attempt to call a function that is in freed
# memory. That would be...uh...bad. Yeah, that's the word. Bad.
_read_callback_pointer = Security.SSLReadFunc(_read_callback)
_write_callback_pointer = Security.SSLWriteFunc(_write_callback)
class WrappedSocket(object):
"""
API-compatibility wrapper for Python's OpenSSL wrapped socket object.
Note: _makefile_refs, _drop(), and _reuse() are needed for the garbage
collector of PyPy.
"""
def __init__(self, socket):
self.socket = socket
self.context = None
self._makefile_refs = 0
self._closed = False
self._exception = None
self._keychain = None
self._keychain_dir = None
self._client_cert_chain = None
# We save off the previously-configured timeout and then set it to
# zero. This is done because we use select and friends to handle the
# timeouts, but if we leave the timeout set on the lower socket then
# Python will "kindly" call select on that socket again for us. Avoid
# that by forcing the timeout to zero.
self._timeout = self.socket.gettimeout()
self.socket.settimeout(0)
@contextlib.contextmanager
def _raise_on_error(self):
"""
A context manager that can be used to wrap calls that do I/O from
SecureTransport. If any of the I/O callbacks hit an exception, this
context manager will correctly propagate the exception after the fact.
This avoids silently swallowing those exceptions.
It also correctly forces the socket closed.
"""
self._exception = None
# We explicitly don't catch around this yield because in the unlikely
# event that an exception was hit in the block we don't want to swallow
# it.
yield
if self._exception is not None:
exception, self._exception = self._exception, None
self.close()
raise exception
def _set_ciphers(self):
"""
Sets up the allowed ciphers. By default this matches the set in
util.ssl_.DEFAULT_CIPHERS, at least as supported by macOS. This is done
custom and doesn't allow changing at this time, mostly because parsing
OpenSSL cipher strings is going to be a freaking nightmare.
"""
ciphers = (Security.SSLCipherSuite * len(CIPHER_SUITES))(*CIPHER_SUITES)
result = Security.SSLSetEnabledCiphers(
self.context, ciphers, len(CIPHER_SUITES)
)
_assert_no_error(result)
def _set_alpn_protocols(self, protocols):
"""
Sets up the ALPN protocols on the context.
"""
if not protocols:
return
protocols_arr = _create_cfstring_array(protocols)
try:
result = Security.SSLSetALPNProtocols(self.context, protocols_arr)
_assert_no_error(result)
finally:
CoreFoundation.CFRelease(protocols_arr)
def _custom_validate(self, verify, trust_bundle):
"""
Called when we have set custom validation. We do this in two cases:
first, when cert validation is entirely disabled; and second, when
using a custom trust DB.
Raises an SSLError if the connection is not trusted.
"""
# If we disabled cert validation, just say: cool.
if not verify:
return
successes = (
SecurityConst.kSecTrustResultUnspecified,
SecurityConst.kSecTrustResultProceed,
)
try:
trust_result = self._evaluate_trust(trust_bundle)
if trust_result in successes:
return
reason = "error code: %d" % (trust_result,)
except Exception as e:
# Do not trust on error
reason = "exception: %r" % (e,)
# SecureTransport does not send an alert nor shuts down the connection.
rec = _build_tls_unknown_ca_alert(self.version())
self.socket.sendall(rec)
# close the connection immediately
# l_onoff = 1, activate linger
# l_linger = 0, linger for 0 seoncds
opts = struct.pack("ii", 1, 0)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, opts)
self.close()
raise ssl.SSLError("certificate verify failed, %s" % reason)
def _evaluate_trust(self, trust_bundle):
# We want data in memory, so load it up.
if os.path.isfile(trust_bundle):
with open(trust_bundle, "rb") as f:
trust_bundle = f.read()
cert_array = None
trust = Security.SecTrustRef()
try:
# Get a CFArray that contains the certs we want.
cert_array = _cert_array_from_pem(trust_bundle)
# Ok, now the hard part. We want to get the SecTrustRef that ST has
# created for this connection, shove our CAs into it, tell ST to
# ignore everything else it knows, and then ask if it can build a
# chain. This is a buuuunch of code.
result = Security.SSLCopyPeerTrust(self.context, ctypes.byref(trust))
_assert_no_error(result)
if not trust:
raise ssl.SSLError("Failed to copy trust reference")
result = Security.SecTrustSetAnchorCertificates(trust, cert_array)
_assert_no_error(result)
result = Security.SecTrustSetAnchorCertificatesOnly(trust, True)
_assert_no_error(result)
trust_result = Security.SecTrustResultType()
result = Security.SecTrustEvaluate(trust, ctypes.byref(trust_result))
_assert_no_error(result)
finally:
if trust:
CoreFoundation.CFRelease(trust)
if cert_array is not None:
CoreFoundation.CFRelease(cert_array)
return trust_result.value
def handshake(
self,
server_hostname,
verify,
trust_bundle,
min_version,
max_version,
client_cert,
client_key,
client_key_passphrase,
alpn_protocols,
):
"""
Actually performs the TLS handshake. This is run automatically by
wrapped socket, and shouldn't be needed in user code.
"""
# First, we do the initial bits of connection setup. We need to create
# a context, set its I/O funcs, and set the connection reference.
self.context = Security.SSLCreateContext(
None, SecurityConst.kSSLClientSide, SecurityConst.kSSLStreamType
)
result = Security.SSLSetIOFuncs(
self.context, _read_callback_pointer, _write_callback_pointer
)
_assert_no_error(result)
# Here we need to compute the handle to use. We do this by taking the
# id of self modulo 2**31 - 1. If this is already in the dictionary, we
# just keep incrementing by one until we find a free space.
with _connection_ref_lock:
handle = id(self) % 2147483647
while handle in _connection_refs:
handle = (handle + 1) % 2147483647
_connection_refs[handle] = self
result = Security.SSLSetConnection(self.context, handle)
_assert_no_error(result)
# If we have a server hostname, we should set that too.
if server_hostname:
if not isinstance(server_hostname, bytes):
server_hostname = server_hostname.encode("utf-8")
result = Security.SSLSetPeerDomainName(
self.context, server_hostname, len(server_hostname)
)
_assert_no_error(result)
# Setup the ciphers.
self._set_ciphers()
# Setup the ALPN protocols.
self._set_alpn_protocols(alpn_protocols)
# Set the minimum and maximum TLS versions.
result = Security.SSLSetProtocolVersionMin(self.context, min_version)
_assert_no_error(result)
result = Security.SSLSetProtocolVersionMax(self.context, max_version)
_assert_no_error(result)
# If there's a trust DB, we need to use it. We do that by telling
# SecureTransport to break on server auth. We also do that if we don't
# want to validate the certs at all: we just won't actually do any
# authing in that case.
if not verify or trust_bundle is not None:
result = Security.SSLSetSessionOption(
self.context, SecurityConst.kSSLSessionOptionBreakOnServerAuth, True
)
_assert_no_error(result)
# If there's a client cert, we need to use it.
if client_cert:
self._keychain, self._keychain_dir = _temporary_keychain()
self._client_cert_chain = _load_client_cert_chain(
self._keychain, client_cert, client_key
)
result = Security.SSLSetCertificate(self.context, self._client_cert_chain)
_assert_no_error(result)
while True:
with self._raise_on_error():
result = Security.SSLHandshake(self.context)
if result == SecurityConst.errSSLWouldBlock:
raise socket.timeout("handshake timed out")
elif result == SecurityConst.errSSLServerAuthCompleted:
self._custom_validate(verify, trust_bundle)
continue
else:
_assert_no_error(result)
break
def fileno(self):
return self.socket.fileno()
# Copy-pasted from Python 3.5 source code
def _decref_socketios(self):
if self._makefile_refs > 0:
self._makefile_refs -= 1
if self._closed:
self.close()
def recv(self, bufsiz):
buffer = ctypes.create_string_buffer(bufsiz)
bytes_read = self.recv_into(buffer, bufsiz)
data = buffer[:bytes_read]
return data
def recv_into(self, buffer, nbytes=None):
# Read short on EOF.
if self._closed:
return 0
if nbytes is None:
nbytes = len(buffer)
buffer = (ctypes.c_char * nbytes).from_buffer(buffer)
processed_bytes = ctypes.c_size_t(0)
with self._raise_on_error():
result = Security.SSLRead(
self.context, buffer, nbytes, ctypes.byref(processed_bytes)
)
# There are some result codes that we want to treat as "not always
# errors". Specifically, those are errSSLWouldBlock,
# errSSLClosedGraceful, and errSSLClosedNoNotify.
if result == SecurityConst.errSSLWouldBlock:
# If we didn't process any bytes, then this was just a time out.
# However, we can get errSSLWouldBlock in situations when we *did*
# read some data, and in those cases we should just read "short"
# and return.
if processed_bytes.value == 0:
# Timed out, no data read.
raise socket.timeout("recv timed out")
elif result in (
SecurityConst.errSSLClosedGraceful,
SecurityConst.errSSLClosedNoNotify,
):
# The remote peer has closed this connection. We should do so as
# well. Note that we don't actually return here because in
# principle this could actually be fired along with return data.
# It's unlikely though.
self.close()
else:
_assert_no_error(result)
# Ok, we read and probably succeeded. We should return whatever data
# was actually read.
return processed_bytes.value
def settimeout(self, timeout):
self._timeout = timeout
def gettimeout(self):
return self._timeout
def send(self, data):
processed_bytes = ctypes.c_size_t(0)
with self._raise_on_error():
result = Security.SSLWrite(
self.context, data, len(data), ctypes.byref(processed_bytes)
)
if result == SecurityConst.errSSLWouldBlock and processed_bytes.value == 0:
# Timed out
raise socket.timeout("send timed out")
else:
_assert_no_error(result)
# We sent, and probably succeeded. Tell them how much we sent.
return processed_bytes.value
def sendall(self, data):
total_sent = 0
while total_sent < len(data):
sent = self.send(data[total_sent : total_sent + SSL_WRITE_BLOCKSIZE])
total_sent += sent
def shutdown(self):
with self._raise_on_error():
Security.SSLClose(self.context)
def close(self):
# TODO: should I do clean shutdown here? Do I have to?
if self._makefile_refs < 1:
self._closed = True
if self.context:
CoreFoundation.CFRelease(self.context)
self.context = None
if self._client_cert_chain:
CoreFoundation.CFRelease(self._client_cert_chain)
self._client_cert_chain = None
if self._keychain:
Security.SecKeychainDelete(self._keychain)
CoreFoundation.CFRelease(self._keychain)
shutil.rmtree(self._keychain_dir)
self._keychain = self._keychain_dir = None
return self.socket.close()
else:
self._makefile_refs -= 1
def getpeercert(self, binary_form=False):
# Urgh, annoying.
#
# Here's how we do this:
#
# 1. Call SSLCopyPeerTrust to get hold of the trust object for this
# connection.
# 2. Call SecTrustGetCertificateAtIndex for index 0 to get the leaf.
# 3. To get the CN, call SecCertificateCopyCommonName and process that
# string so that it's of the appropriate type.
# 4. To get the SAN, we need to do something a bit more complex:
# a. Call SecCertificateCopyValues to get the data, requesting
# kSecOIDSubjectAltName.
# b. Mess about with this dictionary to try to get the SANs out.
#
# This is gross. Really gross. It's going to be a few hundred LoC extra
# just to repeat something that SecureTransport can *already do*. So my
# operating assumption at this time is that what we want to do is
# instead to just flag to urllib3 that it shouldn't do its own hostname
# validation when using SecureTransport.
if not binary_form:
raise ValueError("SecureTransport only supports dumping binary certs")
trust = Security.SecTrustRef()
certdata = None
der_bytes = None
try:
# Grab the trust store.
result = Security.SSLCopyPeerTrust(self.context, ctypes.byref(trust))
_assert_no_error(result)
if not trust:
# Probably we haven't done the handshake yet. No biggie.
return None
cert_count = Security.SecTrustGetCertificateCount(trust)
if not cert_count:
# Also a case that might happen if we haven't handshaked.
# Handshook? Handshaken?
return None
leaf = Security.SecTrustGetCertificateAtIndex(trust, 0)
assert leaf
# Ok, now we want the DER bytes.
certdata = Security.SecCertificateCopyData(leaf)
assert certdata
data_length = CoreFoundation.CFDataGetLength(certdata)
data_buffer = CoreFoundation.CFDataGetBytePtr(certdata)
der_bytes = ctypes.string_at(data_buffer, data_length)
finally:
if certdata:
CoreFoundation.CFRelease(certdata)
if trust:
CoreFoundation.CFRelease(trust)
return der_bytes
def version(self):
protocol = Security.SSLProtocol()
result = Security.SSLGetNegotiatedProtocolVersion(
self.context, ctypes.byref(protocol)
)
_assert_no_error(result)
if protocol.value == SecurityConst.kTLSProtocol13:
raise ssl.SSLError("SecureTransport does not support TLS 1.3")
elif protocol.value == SecurityConst.kTLSProtocol12:
return "TLSv1.2"
elif protocol.value == SecurityConst.kTLSProtocol11:
return "TLSv1.1"
elif protocol.value == SecurityConst.kTLSProtocol1:
return "TLSv1"
elif protocol.value == SecurityConst.kSSLProtocol3:
return "SSLv3"
elif protocol.value == SecurityConst.kSSLProtocol2:
return "SSLv2"
else:
raise ssl.SSLError("Unknown TLS version: %r" % protocol)
def _reuse(self):
self._makefile_refs += 1
def _drop(self):
if self._makefile_refs < 1:
self.close()
else:
self._makefile_refs -= 1
if _fileobject: # Platform-specific: Python 2
def makefile(self, mode, bufsize=-1):
self._makefile_refs += 1
return _fileobject(self, mode, bufsize, close=True)
else: # Platform-specific: Python 3
def makefile(self, mode="r", buffering=None, *args, **kwargs):
# We disable buffering with SecureTransport because it conflicts with
# the buffering that ST does internally (see issue #1153 for more).
buffering = 0
return backport_makefile(self, mode, buffering, *args, **kwargs)
WrappedSocket.makefile = makefile
class SecureTransportContext(object):
"""
I am a wrapper class for the SecureTransport library, to translate the
interface of the standard library ``SSLContext`` object to calls into
SecureTransport.
"""
def __init__(self, protocol):
self._min_version, self._max_version = _protocol_to_min_max[protocol]
self._options = 0
self._verify = False
self._trust_bundle = None
self._client_cert = None
self._client_key = None
self._client_key_passphrase = None
self._alpn_protocols = None
@property
def check_hostname(self):
"""
SecureTransport cannot have its hostname checking disabled. For more,
see the comment on getpeercert() in this file.
"""
return True
@check_hostname.setter
def check_hostname(self, value):
"""
SecureTransport cannot have its hostname checking disabled. For more,
see the comment on getpeercert() in this file.
"""
pass
@property
def options(self):
# TODO: Well, crap.
#
# So this is the bit of the code that is the most likely to cause us
# trouble. Essentially we need to enumerate all of the SSL options that
# users might want to use and try to see if we can sensibly translate
# them, or whether we should just ignore them.
return self._options
@options.setter
def options(self, value):
# TODO: Update in line with above.
self._options = value
@property
def verify_mode(self):
return ssl.CERT_REQUIRED if self._verify else ssl.CERT_NONE
@verify_mode.setter
def verify_mode(self, value):
self._verify = True if value == ssl.CERT_REQUIRED else False
def set_default_verify_paths(self):
# So, this has to do something a bit weird. Specifically, what it does
# is nothing.
#
# This means that, if we had previously had load_verify_locations
# called, this does not undo that. We need to do that because it turns
# out that the rest of the urllib3 code will attempt to load the
# default verify paths if it hasn't been told about any paths, even if
# the context itself was sometime earlier. We resolve that by just
# ignoring it.
pass
def load_default_certs(self):
return self.set_default_verify_paths()
def set_ciphers(self, ciphers):
# For now, we just require the default cipher string.
if ciphers != util.ssl_.DEFAULT_CIPHERS:
raise ValueError("SecureTransport doesn't support custom cipher strings")
def load_verify_locations(self, cafile=None, capath=None, cadata=None):
# OK, we only really support cadata and cafile.
if capath is not None:
raise ValueError("SecureTransport does not support cert directories")
# Raise if cafile does not exist.
if cafile is not None:
with open(cafile):
pass
self._trust_bundle = cafile or cadata
def load_cert_chain(self, certfile, keyfile=None, password=None):
self._client_cert = certfile
self._client_key = keyfile
self._client_cert_passphrase = password
def set_alpn_protocols(self, protocols):
"""
Sets the ALPN protocols that will later be set on the context.
Raises a NotImplementedError if ALPN is not supported.
"""
if not hasattr(Security, "SSLSetALPNProtocols"):
raise NotImplementedError(
"SecureTransport supports ALPN only in macOS 10.12+"
)
self._alpn_protocols = [six.ensure_binary(p) for p in protocols]
def wrap_socket(
self,
sock,
server_side=False,
do_handshake_on_connect=True,
suppress_ragged_eofs=True,
server_hostname=None,
):
# So, what do we do here? Firstly, we assert some properties. This is a
# stripped down shim, so there is some functionality we don't support.
# See PEP 543 for the real deal.
assert not server_side
assert do_handshake_on_connect
assert suppress_ragged_eofs
# Ok, we're good to go. Now we want to create the wrapped socket object
# and store it in the appropriate place.
wrapped_socket = WrappedSocket(sock)
# Now we can handshake
wrapped_socket.handshake(
server_hostname,
self._verify,
self._trust_bundle,
self._min_version,
self._max_version,
self._client_cert,
self._client_key,
self._client_key_passphrase,
self._alpn_protocols,
)
return wrapped_socket
| 34,416 | Python | 36.328633 | 86 | 0.634821 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/_appengine_environ.py | """
This module provides means to detect the App Engine environment.
"""
import os
def is_appengine():
return is_local_appengine() or is_prod_appengine()
def is_appengine_sandbox():
"""Reports if the app is running in the first generation sandbox.
The second generation runtimes are technically still in a sandbox, but it
is much less restrictive, so generally you shouldn't need to check for it.
see https://cloud.google.com/appengine/docs/standard/runtimes
"""
return is_appengine() and os.environ["APPENGINE_RUNTIME"] == "python27"
def is_local_appengine():
return "APPENGINE_RUNTIME" in os.environ and os.environ.get(
"SERVER_SOFTWARE", ""
).startswith("Development/")
def is_prod_appengine():
return "APPENGINE_RUNTIME" in os.environ and os.environ.get(
"SERVER_SOFTWARE", ""
).startswith("Google App Engine/")
def is_prod_appengine_mvms():
"""Deprecated."""
return False
| 957 | Python | 24.891891 | 78 | 0.6907 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/ntlmpool.py | """
NTLM authenticating pool, contributed by erikcederstran
Issue #10, see: http://code.google.com/p/urllib3/issues/detail?id=10
"""
from __future__ import absolute_import
import warnings
from logging import getLogger
from ntlm import ntlm
from .. import HTTPSConnectionPool
from ..packages.six.moves.http_client import HTTPSConnection
warnings.warn(
"The 'urllib3.contrib.ntlmpool' module is deprecated and will be removed "
"in urllib3 v2.0 release, urllib3 is not able to support it properly due "
"to reasons listed in issue: https://github.com/urllib3/urllib3/issues/2282. "
"If you are a user of this module please comment in the mentioned issue.",
DeprecationWarning,
)
log = getLogger(__name__)
class NTLMConnectionPool(HTTPSConnectionPool):
"""
Implements an NTLM authentication version of an urllib3 connection pool
"""
scheme = "https"
def __init__(self, user, pw, authurl, *args, **kwargs):
"""
authurl is a random URL on the server that is protected by NTLM.
user is the Windows user, probably in the DOMAIN\\username format.
pw is the password for the user.
"""
super(NTLMConnectionPool, self).__init__(*args, **kwargs)
self.authurl = authurl
self.rawuser = user
user_parts = user.split("\\", 1)
self.domain = user_parts[0].upper()
self.user = user_parts[1]
self.pw = pw
def _new_conn(self):
# Performs the NTLM handshake that secures the connection. The socket
# must be kept open while requests are performed.
self.num_connections += 1
log.debug(
"Starting NTLM HTTPS connection no. %d: https://%s%s",
self.num_connections,
self.host,
self.authurl,
)
headers = {"Connection": "Keep-Alive"}
req_header = "Authorization"
resp_header = "www-authenticate"
conn = HTTPSConnection(host=self.host, port=self.port)
# Send negotiation message
headers[req_header] = "NTLM %s" % ntlm.create_NTLM_NEGOTIATE_MESSAGE(
self.rawuser
)
log.debug("Request headers: %s", headers)
conn.request("GET", self.authurl, None, headers)
res = conn.getresponse()
reshdr = dict(res.headers)
log.debug("Response status: %s %s", res.status, res.reason)
log.debug("Response headers: %s", reshdr)
log.debug("Response data: %s [...]", res.read(100))
# Remove the reference to the socket, so that it can not be closed by
# the response object (we want to keep the socket open)
res.fp = None
# Server should respond with a challenge message
auth_header_values = reshdr[resp_header].split(", ")
auth_header_value = None
for s in auth_header_values:
if s[:5] == "NTLM ":
auth_header_value = s[5:]
if auth_header_value is None:
raise Exception(
"Unexpected %s response header: %s" % (resp_header, reshdr[resp_header])
)
# Send authentication message
ServerChallenge, NegotiateFlags = ntlm.parse_NTLM_CHALLENGE_MESSAGE(
auth_header_value
)
auth_msg = ntlm.create_NTLM_AUTHENTICATE_MESSAGE(
ServerChallenge, self.user, self.domain, self.pw, NegotiateFlags
)
headers[req_header] = "NTLM %s" % auth_msg
log.debug("Request headers: %s", headers)
conn.request("GET", self.authurl, None, headers)
res = conn.getresponse()
log.debug("Response status: %s %s", res.status, res.reason)
log.debug("Response headers: %s", dict(res.headers))
log.debug("Response data: %s [...]", res.read()[:100])
if res.status != 200:
if res.status == 401:
raise Exception("Server rejected request: wrong username or password")
raise Exception("Wrong server response: %s %s" % (res.status, res.reason))
res.fp = None
log.debug("Connection established")
return conn
def urlopen(
self,
method,
url,
body=None,
headers=None,
retries=3,
redirect=True,
assert_same_host=True,
):
if headers is None:
headers = {}
headers["Connection"] = "Keep-Alive"
return super(NTLMConnectionPool, self).urlopen(
method, url, body, headers, retries, redirect, assert_same_host
)
| 4,528 | Python | 33.572519 | 88 | 0.605345 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/_securetransport/low_level.py | """
Low-level helpers for the SecureTransport bindings.
These are Python functions that are not directly related to the high-level APIs
but are necessary to get them to work. They include a whole bunch of low-level
CoreFoundation messing about and memory management. The concerns in this module
are almost entirely about trying to avoid memory leaks and providing
appropriate and useful assistance to the higher-level code.
"""
import base64
import ctypes
import itertools
import os
import re
import ssl
import struct
import tempfile
from .bindings import CFConst, CoreFoundation, Security
# This regular expression is used to grab PEM data out of a PEM bundle.
_PEM_CERTS_RE = re.compile(
b"-----BEGIN CERTIFICATE-----\n(.*?)\n-----END CERTIFICATE-----", re.DOTALL
)
def _cf_data_from_bytes(bytestring):
"""
Given a bytestring, create a CFData object from it. This CFData object must
be CFReleased by the caller.
"""
return CoreFoundation.CFDataCreate(
CoreFoundation.kCFAllocatorDefault, bytestring, len(bytestring)
)
def _cf_dictionary_from_tuples(tuples):
"""
Given a list of Python tuples, create an associated CFDictionary.
"""
dictionary_size = len(tuples)
# We need to get the dictionary keys and values out in the same order.
keys = (t[0] for t in tuples)
values = (t[1] for t in tuples)
cf_keys = (CoreFoundation.CFTypeRef * dictionary_size)(*keys)
cf_values = (CoreFoundation.CFTypeRef * dictionary_size)(*values)
return CoreFoundation.CFDictionaryCreate(
CoreFoundation.kCFAllocatorDefault,
cf_keys,
cf_values,
dictionary_size,
CoreFoundation.kCFTypeDictionaryKeyCallBacks,
CoreFoundation.kCFTypeDictionaryValueCallBacks,
)
def _cfstr(py_bstr):
"""
Given a Python binary data, create a CFString.
The string must be CFReleased by the caller.
"""
c_str = ctypes.c_char_p(py_bstr)
cf_str = CoreFoundation.CFStringCreateWithCString(
CoreFoundation.kCFAllocatorDefault,
c_str,
CFConst.kCFStringEncodingUTF8,
)
return cf_str
def _create_cfstring_array(lst):
"""
Given a list of Python binary data, create an associated CFMutableArray.
The array must be CFReleased by the caller.
Raises an ssl.SSLError on failure.
"""
cf_arr = None
try:
cf_arr = CoreFoundation.CFArrayCreateMutable(
CoreFoundation.kCFAllocatorDefault,
0,
ctypes.byref(CoreFoundation.kCFTypeArrayCallBacks),
)
if not cf_arr:
raise MemoryError("Unable to allocate memory!")
for item in lst:
cf_str = _cfstr(item)
if not cf_str:
raise MemoryError("Unable to allocate memory!")
try:
CoreFoundation.CFArrayAppendValue(cf_arr, cf_str)
finally:
CoreFoundation.CFRelease(cf_str)
except BaseException as e:
if cf_arr:
CoreFoundation.CFRelease(cf_arr)
raise ssl.SSLError("Unable to allocate array: %s" % (e,))
return cf_arr
def _cf_string_to_unicode(value):
"""
Creates a Unicode string from a CFString object. Used entirely for error
reporting.
Yes, it annoys me quite a lot that this function is this complex.
"""
value_as_void_p = ctypes.cast(value, ctypes.POINTER(ctypes.c_void_p))
string = CoreFoundation.CFStringGetCStringPtr(
value_as_void_p, CFConst.kCFStringEncodingUTF8
)
if string is None:
buffer = ctypes.create_string_buffer(1024)
result = CoreFoundation.CFStringGetCString(
value_as_void_p, buffer, 1024, CFConst.kCFStringEncodingUTF8
)
if not result:
raise OSError("Error copying C string from CFStringRef")
string = buffer.value
if string is not None:
string = string.decode("utf-8")
return string
def _assert_no_error(error, exception_class=None):
"""
Checks the return code and throws an exception if there is an error to
report
"""
if error == 0:
return
cf_error_string = Security.SecCopyErrorMessageString(error, None)
output = _cf_string_to_unicode(cf_error_string)
CoreFoundation.CFRelease(cf_error_string)
if output is None or output == u"":
output = u"OSStatus %s" % error
if exception_class is None:
exception_class = ssl.SSLError
raise exception_class(output)
def _cert_array_from_pem(pem_bundle):
"""
Given a bundle of certs in PEM format, turns them into a CFArray of certs
that can be used to validate a cert chain.
"""
# Normalize the PEM bundle's line endings.
pem_bundle = pem_bundle.replace(b"\r\n", b"\n")
der_certs = [
base64.b64decode(match.group(1)) for match in _PEM_CERTS_RE.finditer(pem_bundle)
]
if not der_certs:
raise ssl.SSLError("No root certificates specified")
cert_array = CoreFoundation.CFArrayCreateMutable(
CoreFoundation.kCFAllocatorDefault,
0,
ctypes.byref(CoreFoundation.kCFTypeArrayCallBacks),
)
if not cert_array:
raise ssl.SSLError("Unable to allocate memory!")
try:
for der_bytes in der_certs:
certdata = _cf_data_from_bytes(der_bytes)
if not certdata:
raise ssl.SSLError("Unable to allocate memory!")
cert = Security.SecCertificateCreateWithData(
CoreFoundation.kCFAllocatorDefault, certdata
)
CoreFoundation.CFRelease(certdata)
if not cert:
raise ssl.SSLError("Unable to build cert object!")
CoreFoundation.CFArrayAppendValue(cert_array, cert)
CoreFoundation.CFRelease(cert)
except Exception:
# We need to free the array before the exception bubbles further.
# We only want to do that if an error occurs: otherwise, the caller
# should free.
CoreFoundation.CFRelease(cert_array)
raise
return cert_array
def _is_cert(item):
"""
Returns True if a given CFTypeRef is a certificate.
"""
expected = Security.SecCertificateGetTypeID()
return CoreFoundation.CFGetTypeID(item) == expected
def _is_identity(item):
"""
Returns True if a given CFTypeRef is an identity.
"""
expected = Security.SecIdentityGetTypeID()
return CoreFoundation.CFGetTypeID(item) == expected
def _temporary_keychain():
"""
This function creates a temporary Mac keychain that we can use to work with
credentials. This keychain uses a one-time password and a temporary file to
store the data. We expect to have one keychain per socket. The returned
SecKeychainRef must be freed by the caller, including calling
SecKeychainDelete.
Returns a tuple of the SecKeychainRef and the path to the temporary
directory that contains it.
"""
# Unfortunately, SecKeychainCreate requires a path to a keychain. This
# means we cannot use mkstemp to use a generic temporary file. Instead,
# we're going to create a temporary directory and a filename to use there.
# This filename will be 8 random bytes expanded into base64. We also need
# some random bytes to password-protect the keychain we're creating, so we
# ask for 40 random bytes.
random_bytes = os.urandom(40)
filename = base64.b16encode(random_bytes[:8]).decode("utf-8")
password = base64.b16encode(random_bytes[8:]) # Must be valid UTF-8
tempdirectory = tempfile.mkdtemp()
keychain_path = os.path.join(tempdirectory, filename).encode("utf-8")
# We now want to create the keychain itself.
keychain = Security.SecKeychainRef()
status = Security.SecKeychainCreate(
keychain_path, len(password), password, False, None, ctypes.byref(keychain)
)
_assert_no_error(status)
# Having created the keychain, we want to pass it off to the caller.
return keychain, tempdirectory
def _load_items_from_file(keychain, path):
"""
Given a single file, loads all the trust objects from it into arrays and
the keychain.
Returns a tuple of lists: the first list is a list of identities, the
second a list of certs.
"""
certificates = []
identities = []
result_array = None
with open(path, "rb") as f:
raw_filedata = f.read()
try:
filedata = CoreFoundation.CFDataCreate(
CoreFoundation.kCFAllocatorDefault, raw_filedata, len(raw_filedata)
)
result_array = CoreFoundation.CFArrayRef()
result = Security.SecItemImport(
filedata, # cert data
None, # Filename, leaving it out for now
None, # What the type of the file is, we don't care
None, # what's in the file, we don't care
0, # import flags
None, # key params, can include passphrase in the future
keychain, # The keychain to insert into
ctypes.byref(result_array), # Results
)
_assert_no_error(result)
# A CFArray is not very useful to us as an intermediary
# representation, so we are going to extract the objects we want
# and then free the array. We don't need to keep hold of keys: the
# keychain already has them!
result_count = CoreFoundation.CFArrayGetCount(result_array)
for index in range(result_count):
item = CoreFoundation.CFArrayGetValueAtIndex(result_array, index)
item = ctypes.cast(item, CoreFoundation.CFTypeRef)
if _is_cert(item):
CoreFoundation.CFRetain(item)
certificates.append(item)
elif _is_identity(item):
CoreFoundation.CFRetain(item)
identities.append(item)
finally:
if result_array:
CoreFoundation.CFRelease(result_array)
CoreFoundation.CFRelease(filedata)
return (identities, certificates)
def _load_client_cert_chain(keychain, *paths):
"""
Load certificates and maybe keys from a number of files. Has the end goal
of returning a CFArray containing one SecIdentityRef, and then zero or more
SecCertificateRef objects, suitable for use as a client certificate trust
chain.
"""
# Ok, the strategy.
#
# This relies on knowing that macOS will not give you a SecIdentityRef
# unless you have imported a key into a keychain. This is a somewhat
# artificial limitation of macOS (for example, it doesn't necessarily
# affect iOS), but there is nothing inside Security.framework that lets you
# get a SecIdentityRef without having a key in a keychain.
#
# So the policy here is we take all the files and iterate them in order.
# Each one will use SecItemImport to have one or more objects loaded from
# it. We will also point at a keychain that macOS can use to work with the
# private key.
#
# Once we have all the objects, we'll check what we actually have. If we
# already have a SecIdentityRef in hand, fab: we'll use that. Otherwise,
# we'll take the first certificate (which we assume to be our leaf) and
# ask the keychain to give us a SecIdentityRef with that cert's associated
# key.
#
# We'll then return a CFArray containing the trust chain: one
# SecIdentityRef and then zero-or-more SecCertificateRef objects. The
# responsibility for freeing this CFArray will be with the caller. This
# CFArray must remain alive for the entire connection, so in practice it
# will be stored with a single SSLSocket, along with the reference to the
# keychain.
certificates = []
identities = []
# Filter out bad paths.
paths = (path for path in paths if path)
try:
for file_path in paths:
new_identities, new_certs = _load_items_from_file(keychain, file_path)
identities.extend(new_identities)
certificates.extend(new_certs)
# Ok, we have everything. The question is: do we have an identity? If
# not, we want to grab one from the first cert we have.
if not identities:
new_identity = Security.SecIdentityRef()
status = Security.SecIdentityCreateWithCertificate(
keychain, certificates[0], ctypes.byref(new_identity)
)
_assert_no_error(status)
identities.append(new_identity)
# We now want to release the original certificate, as we no longer
# need it.
CoreFoundation.CFRelease(certificates.pop(0))
# We now need to build a new CFArray that holds the trust chain.
trust_chain = CoreFoundation.CFArrayCreateMutable(
CoreFoundation.kCFAllocatorDefault,
0,
ctypes.byref(CoreFoundation.kCFTypeArrayCallBacks),
)
for item in itertools.chain(identities, certificates):
# ArrayAppendValue does a CFRetain on the item. That's fine,
# because the finally block will release our other refs to them.
CoreFoundation.CFArrayAppendValue(trust_chain, item)
return trust_chain
finally:
for obj in itertools.chain(identities, certificates):
CoreFoundation.CFRelease(obj)
TLS_PROTOCOL_VERSIONS = {
"SSLv2": (0, 2),
"SSLv3": (3, 0),
"TLSv1": (3, 1),
"TLSv1.1": (3, 2),
"TLSv1.2": (3, 3),
}
def _build_tls_unknown_ca_alert(version):
"""
Builds a TLS alert record for an unknown CA.
"""
ver_maj, ver_min = TLS_PROTOCOL_VERSIONS[version]
severity_fatal = 0x02
description_unknown_ca = 0x30
msg = struct.pack(">BB", severity_fatal, description_unknown_ca)
msg_len = len(msg)
record_type_alert = 0x15
record = struct.pack(">BBBH", record_type_alert, ver_maj, ver_min, msg_len) + msg
return record
| 13,922 | Python | 33.982412 | 88 | 0.659316 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/contrib/_securetransport/bindings.py | """
This module uses ctypes to bind a whole bunch of functions and constants from
SecureTransport. The goal here is to provide the low-level API to
SecureTransport. These are essentially the C-level functions and constants, and
they're pretty gross to work with.
This code is a bastardised version of the code found in Will Bond's oscrypto
library. An enormous debt is owed to him for blazing this trail for us. For
that reason, this code should be considered to be covered both by urllib3's
license and by oscrypto's:
Copyright (c) 2015-2016 Will Bond <[email protected]>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
"""
from __future__ import absolute_import
import platform
from ctypes import (
CDLL,
CFUNCTYPE,
POINTER,
c_bool,
c_byte,
c_char_p,
c_int32,
c_long,
c_size_t,
c_uint32,
c_ulong,
c_void_p,
)
from ctypes.util import find_library
from ...packages.six import raise_from
if platform.system() != "Darwin":
raise ImportError("Only macOS is supported")
version = platform.mac_ver()[0]
version_info = tuple(map(int, version.split(".")))
if version_info < (10, 8):
raise OSError(
"Only OS X 10.8 and newer are supported, not %s.%s"
% (version_info[0], version_info[1])
)
def load_cdll(name, macos10_16_path):
"""Loads a CDLL by name, falling back to known path on 10.16+"""
try:
# Big Sur is technically 11 but we use 10.16 due to the Big Sur
# beta being labeled as 10.16.
if version_info >= (10, 16):
path = macos10_16_path
else:
path = find_library(name)
if not path:
raise OSError # Caught and reraised as 'ImportError'
return CDLL(path, use_errno=True)
except OSError:
raise_from(ImportError("The library %s failed to load" % name), None)
Security = load_cdll(
"Security", "/System/Library/Frameworks/Security.framework/Security"
)
CoreFoundation = load_cdll(
"CoreFoundation",
"/System/Library/Frameworks/CoreFoundation.framework/CoreFoundation",
)
Boolean = c_bool
CFIndex = c_long
CFStringEncoding = c_uint32
CFData = c_void_p
CFString = c_void_p
CFArray = c_void_p
CFMutableArray = c_void_p
CFDictionary = c_void_p
CFError = c_void_p
CFType = c_void_p
CFTypeID = c_ulong
CFTypeRef = POINTER(CFType)
CFAllocatorRef = c_void_p
OSStatus = c_int32
CFDataRef = POINTER(CFData)
CFStringRef = POINTER(CFString)
CFArrayRef = POINTER(CFArray)
CFMutableArrayRef = POINTER(CFMutableArray)
CFDictionaryRef = POINTER(CFDictionary)
CFArrayCallBacks = c_void_p
CFDictionaryKeyCallBacks = c_void_p
CFDictionaryValueCallBacks = c_void_p
SecCertificateRef = POINTER(c_void_p)
SecExternalFormat = c_uint32
SecExternalItemType = c_uint32
SecIdentityRef = POINTER(c_void_p)
SecItemImportExportFlags = c_uint32
SecItemImportExportKeyParameters = c_void_p
SecKeychainRef = POINTER(c_void_p)
SSLProtocol = c_uint32
SSLCipherSuite = c_uint32
SSLContextRef = POINTER(c_void_p)
SecTrustRef = POINTER(c_void_p)
SSLConnectionRef = c_uint32
SecTrustResultType = c_uint32
SecTrustOptionFlags = c_uint32
SSLProtocolSide = c_uint32
SSLConnectionType = c_uint32
SSLSessionOption = c_uint32
try:
Security.SecItemImport.argtypes = [
CFDataRef,
CFStringRef,
POINTER(SecExternalFormat),
POINTER(SecExternalItemType),
SecItemImportExportFlags,
POINTER(SecItemImportExportKeyParameters),
SecKeychainRef,
POINTER(CFArrayRef),
]
Security.SecItemImport.restype = OSStatus
Security.SecCertificateGetTypeID.argtypes = []
Security.SecCertificateGetTypeID.restype = CFTypeID
Security.SecIdentityGetTypeID.argtypes = []
Security.SecIdentityGetTypeID.restype = CFTypeID
Security.SecKeyGetTypeID.argtypes = []
Security.SecKeyGetTypeID.restype = CFTypeID
Security.SecCertificateCreateWithData.argtypes = [CFAllocatorRef, CFDataRef]
Security.SecCertificateCreateWithData.restype = SecCertificateRef
Security.SecCertificateCopyData.argtypes = [SecCertificateRef]
Security.SecCertificateCopyData.restype = CFDataRef
Security.SecCopyErrorMessageString.argtypes = [OSStatus, c_void_p]
Security.SecCopyErrorMessageString.restype = CFStringRef
Security.SecIdentityCreateWithCertificate.argtypes = [
CFTypeRef,
SecCertificateRef,
POINTER(SecIdentityRef),
]
Security.SecIdentityCreateWithCertificate.restype = OSStatus
Security.SecKeychainCreate.argtypes = [
c_char_p,
c_uint32,
c_void_p,
Boolean,
c_void_p,
POINTER(SecKeychainRef),
]
Security.SecKeychainCreate.restype = OSStatus
Security.SecKeychainDelete.argtypes = [SecKeychainRef]
Security.SecKeychainDelete.restype = OSStatus
Security.SecPKCS12Import.argtypes = [
CFDataRef,
CFDictionaryRef,
POINTER(CFArrayRef),
]
Security.SecPKCS12Import.restype = OSStatus
SSLReadFunc = CFUNCTYPE(OSStatus, SSLConnectionRef, c_void_p, POINTER(c_size_t))
SSLWriteFunc = CFUNCTYPE(
OSStatus, SSLConnectionRef, POINTER(c_byte), POINTER(c_size_t)
)
Security.SSLSetIOFuncs.argtypes = [SSLContextRef, SSLReadFunc, SSLWriteFunc]
Security.SSLSetIOFuncs.restype = OSStatus
Security.SSLSetPeerID.argtypes = [SSLContextRef, c_char_p, c_size_t]
Security.SSLSetPeerID.restype = OSStatus
Security.SSLSetCertificate.argtypes = [SSLContextRef, CFArrayRef]
Security.SSLSetCertificate.restype = OSStatus
Security.SSLSetCertificateAuthorities.argtypes = [SSLContextRef, CFTypeRef, Boolean]
Security.SSLSetCertificateAuthorities.restype = OSStatus
Security.SSLSetConnection.argtypes = [SSLContextRef, SSLConnectionRef]
Security.SSLSetConnection.restype = OSStatus
Security.SSLSetPeerDomainName.argtypes = [SSLContextRef, c_char_p, c_size_t]
Security.SSLSetPeerDomainName.restype = OSStatus
Security.SSLHandshake.argtypes = [SSLContextRef]
Security.SSLHandshake.restype = OSStatus
Security.SSLRead.argtypes = [SSLContextRef, c_char_p, c_size_t, POINTER(c_size_t)]
Security.SSLRead.restype = OSStatus
Security.SSLWrite.argtypes = [SSLContextRef, c_char_p, c_size_t, POINTER(c_size_t)]
Security.SSLWrite.restype = OSStatus
Security.SSLClose.argtypes = [SSLContextRef]
Security.SSLClose.restype = OSStatus
Security.SSLGetNumberSupportedCiphers.argtypes = [SSLContextRef, POINTER(c_size_t)]
Security.SSLGetNumberSupportedCiphers.restype = OSStatus
Security.SSLGetSupportedCiphers.argtypes = [
SSLContextRef,
POINTER(SSLCipherSuite),
POINTER(c_size_t),
]
Security.SSLGetSupportedCiphers.restype = OSStatus
Security.SSLSetEnabledCiphers.argtypes = [
SSLContextRef,
POINTER(SSLCipherSuite),
c_size_t,
]
Security.SSLSetEnabledCiphers.restype = OSStatus
Security.SSLGetNumberEnabledCiphers.argtype = [SSLContextRef, POINTER(c_size_t)]
Security.SSLGetNumberEnabledCiphers.restype = OSStatus
Security.SSLGetEnabledCiphers.argtypes = [
SSLContextRef,
POINTER(SSLCipherSuite),
POINTER(c_size_t),
]
Security.SSLGetEnabledCiphers.restype = OSStatus
Security.SSLGetNegotiatedCipher.argtypes = [SSLContextRef, POINTER(SSLCipherSuite)]
Security.SSLGetNegotiatedCipher.restype = OSStatus
Security.SSLGetNegotiatedProtocolVersion.argtypes = [
SSLContextRef,
POINTER(SSLProtocol),
]
Security.SSLGetNegotiatedProtocolVersion.restype = OSStatus
Security.SSLCopyPeerTrust.argtypes = [SSLContextRef, POINTER(SecTrustRef)]
Security.SSLCopyPeerTrust.restype = OSStatus
Security.SecTrustSetAnchorCertificates.argtypes = [SecTrustRef, CFArrayRef]
Security.SecTrustSetAnchorCertificates.restype = OSStatus
Security.SecTrustSetAnchorCertificatesOnly.argstypes = [SecTrustRef, Boolean]
Security.SecTrustSetAnchorCertificatesOnly.restype = OSStatus
Security.SecTrustEvaluate.argtypes = [SecTrustRef, POINTER(SecTrustResultType)]
Security.SecTrustEvaluate.restype = OSStatus
Security.SecTrustGetCertificateCount.argtypes = [SecTrustRef]
Security.SecTrustGetCertificateCount.restype = CFIndex
Security.SecTrustGetCertificateAtIndex.argtypes = [SecTrustRef, CFIndex]
Security.SecTrustGetCertificateAtIndex.restype = SecCertificateRef
Security.SSLCreateContext.argtypes = [
CFAllocatorRef,
SSLProtocolSide,
SSLConnectionType,
]
Security.SSLCreateContext.restype = SSLContextRef
Security.SSLSetSessionOption.argtypes = [SSLContextRef, SSLSessionOption, Boolean]
Security.SSLSetSessionOption.restype = OSStatus
Security.SSLSetProtocolVersionMin.argtypes = [SSLContextRef, SSLProtocol]
Security.SSLSetProtocolVersionMin.restype = OSStatus
Security.SSLSetProtocolVersionMax.argtypes = [SSLContextRef, SSLProtocol]
Security.SSLSetProtocolVersionMax.restype = OSStatus
try:
Security.SSLSetALPNProtocols.argtypes = [SSLContextRef, CFArrayRef]
Security.SSLSetALPNProtocols.restype = OSStatus
except AttributeError:
# Supported only in 10.12+
pass
Security.SecCopyErrorMessageString.argtypes = [OSStatus, c_void_p]
Security.SecCopyErrorMessageString.restype = CFStringRef
Security.SSLReadFunc = SSLReadFunc
Security.SSLWriteFunc = SSLWriteFunc
Security.SSLContextRef = SSLContextRef
Security.SSLProtocol = SSLProtocol
Security.SSLCipherSuite = SSLCipherSuite
Security.SecIdentityRef = SecIdentityRef
Security.SecKeychainRef = SecKeychainRef
Security.SecTrustRef = SecTrustRef
Security.SecTrustResultType = SecTrustResultType
Security.SecExternalFormat = SecExternalFormat
Security.OSStatus = OSStatus
Security.kSecImportExportPassphrase = CFStringRef.in_dll(
Security, "kSecImportExportPassphrase"
)
Security.kSecImportItemIdentity = CFStringRef.in_dll(
Security, "kSecImportItemIdentity"
)
# CoreFoundation time!
CoreFoundation.CFRetain.argtypes = [CFTypeRef]
CoreFoundation.CFRetain.restype = CFTypeRef
CoreFoundation.CFRelease.argtypes = [CFTypeRef]
CoreFoundation.CFRelease.restype = None
CoreFoundation.CFGetTypeID.argtypes = [CFTypeRef]
CoreFoundation.CFGetTypeID.restype = CFTypeID
CoreFoundation.CFStringCreateWithCString.argtypes = [
CFAllocatorRef,
c_char_p,
CFStringEncoding,
]
CoreFoundation.CFStringCreateWithCString.restype = CFStringRef
CoreFoundation.CFStringGetCStringPtr.argtypes = [CFStringRef, CFStringEncoding]
CoreFoundation.CFStringGetCStringPtr.restype = c_char_p
CoreFoundation.CFStringGetCString.argtypes = [
CFStringRef,
c_char_p,
CFIndex,
CFStringEncoding,
]
CoreFoundation.CFStringGetCString.restype = c_bool
CoreFoundation.CFDataCreate.argtypes = [CFAllocatorRef, c_char_p, CFIndex]
CoreFoundation.CFDataCreate.restype = CFDataRef
CoreFoundation.CFDataGetLength.argtypes = [CFDataRef]
CoreFoundation.CFDataGetLength.restype = CFIndex
CoreFoundation.CFDataGetBytePtr.argtypes = [CFDataRef]
CoreFoundation.CFDataGetBytePtr.restype = c_void_p
CoreFoundation.CFDictionaryCreate.argtypes = [
CFAllocatorRef,
POINTER(CFTypeRef),
POINTER(CFTypeRef),
CFIndex,
CFDictionaryKeyCallBacks,
CFDictionaryValueCallBacks,
]
CoreFoundation.CFDictionaryCreate.restype = CFDictionaryRef
CoreFoundation.CFDictionaryGetValue.argtypes = [CFDictionaryRef, CFTypeRef]
CoreFoundation.CFDictionaryGetValue.restype = CFTypeRef
CoreFoundation.CFArrayCreate.argtypes = [
CFAllocatorRef,
POINTER(CFTypeRef),
CFIndex,
CFArrayCallBacks,
]
CoreFoundation.CFArrayCreate.restype = CFArrayRef
CoreFoundation.CFArrayCreateMutable.argtypes = [
CFAllocatorRef,
CFIndex,
CFArrayCallBacks,
]
CoreFoundation.CFArrayCreateMutable.restype = CFMutableArrayRef
CoreFoundation.CFArrayAppendValue.argtypes = [CFMutableArrayRef, c_void_p]
CoreFoundation.CFArrayAppendValue.restype = None
CoreFoundation.CFArrayGetCount.argtypes = [CFArrayRef]
CoreFoundation.CFArrayGetCount.restype = CFIndex
CoreFoundation.CFArrayGetValueAtIndex.argtypes = [CFArrayRef, CFIndex]
CoreFoundation.CFArrayGetValueAtIndex.restype = c_void_p
CoreFoundation.kCFAllocatorDefault = CFAllocatorRef.in_dll(
CoreFoundation, "kCFAllocatorDefault"
)
CoreFoundation.kCFTypeArrayCallBacks = c_void_p.in_dll(
CoreFoundation, "kCFTypeArrayCallBacks"
)
CoreFoundation.kCFTypeDictionaryKeyCallBacks = c_void_p.in_dll(
CoreFoundation, "kCFTypeDictionaryKeyCallBacks"
)
CoreFoundation.kCFTypeDictionaryValueCallBacks = c_void_p.in_dll(
CoreFoundation, "kCFTypeDictionaryValueCallBacks"
)
CoreFoundation.CFTypeRef = CFTypeRef
CoreFoundation.CFArrayRef = CFArrayRef
CoreFoundation.CFStringRef = CFStringRef
CoreFoundation.CFDictionaryRef = CFDictionaryRef
except (AttributeError):
raise ImportError("Error initializing ctypes")
class CFConst(object):
"""
A class object that acts as essentially a namespace for CoreFoundation
constants.
"""
kCFStringEncodingUTF8 = CFStringEncoding(0x08000100)
class SecurityConst(object):
"""
A class object that acts as essentially a namespace for Security constants.
"""
kSSLSessionOptionBreakOnServerAuth = 0
kSSLProtocol2 = 1
kSSLProtocol3 = 2
kTLSProtocol1 = 4
kTLSProtocol11 = 7
kTLSProtocol12 = 8
# SecureTransport does not support TLS 1.3 even if there's a constant for it
kTLSProtocol13 = 10
kTLSProtocolMaxSupported = 999
kSSLClientSide = 1
kSSLStreamType = 0
kSecFormatPEMSequence = 10
kSecTrustResultInvalid = 0
kSecTrustResultProceed = 1
# This gap is present on purpose: this was kSecTrustResultConfirm, which
# is deprecated.
kSecTrustResultDeny = 3
kSecTrustResultUnspecified = 4
kSecTrustResultRecoverableTrustFailure = 5
kSecTrustResultFatalTrustFailure = 6
kSecTrustResultOtherError = 7
errSSLProtocol = -9800
errSSLWouldBlock = -9803
errSSLClosedGraceful = -9805
errSSLClosedNoNotify = -9816
errSSLClosedAbort = -9806
errSSLXCertChainInvalid = -9807
errSSLCrypto = -9809
errSSLInternal = -9810
errSSLCertExpired = -9814
errSSLCertNotYetValid = -9815
errSSLUnknownRootCert = -9812
errSSLNoRootCert = -9813
errSSLHostNameMismatch = -9843
errSSLPeerHandshakeFail = -9824
errSSLPeerUserCancelled = -9839
errSSLWeakPeerEphemeralDHKey = -9850
errSSLServerAuthCompleted = -9841
errSSLRecordOverflow = -9847
errSecVerifyFailed = -67808
errSecNoTrustSettings = -25263
errSecItemNotFound = -25300
errSecInvalidTrustSettings = -25262
# Cipher suites. We only pick the ones our default cipher string allows.
# Source: https://developer.apple.com/documentation/security/1550981-ssl_cipher_suite_values
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 = 0xC02C
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 = 0xC030
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 = 0xC02B
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 = 0xC02F
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 = 0xCCA9
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 = 0xCCA8
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 = 0x009F
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 = 0x009E
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384 = 0xC024
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 = 0xC028
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA = 0xC00A
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA = 0xC014
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 = 0x006B
TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0x0039
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256 = 0xC023
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 = 0xC027
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA = 0xC009
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA = 0xC013
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 = 0x0067
TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0x0033
TLS_RSA_WITH_AES_256_GCM_SHA384 = 0x009D
TLS_RSA_WITH_AES_128_GCM_SHA256 = 0x009C
TLS_RSA_WITH_AES_256_CBC_SHA256 = 0x003D
TLS_RSA_WITH_AES_128_CBC_SHA256 = 0x003C
TLS_RSA_WITH_AES_256_CBC_SHA = 0x0035
TLS_RSA_WITH_AES_128_CBC_SHA = 0x002F
TLS_AES_128_GCM_SHA256 = 0x1301
TLS_AES_256_GCM_SHA384 = 0x1302
TLS_AES_128_CCM_8_SHA256 = 0x1305
TLS_AES_128_CCM_SHA256 = 0x1304
| 17,632 | Python | 32.909615 | 96 | 0.735311 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/packages/backports/makefile.py | # -*- coding: utf-8 -*-
"""
backports.makefile
~~~~~~~~~~~~~~~~~~
Backports the Python 3 ``socket.makefile`` method for use with anything that
wants to create a "fake" socket object.
"""
import io
from socket import SocketIO
def backport_makefile(
self, mode="r", buffering=None, encoding=None, errors=None, newline=None
):
"""
Backport of ``socket.makefile`` from Python 3.5.
"""
if not set(mode) <= {"r", "w", "b"}:
raise ValueError("invalid mode %r (only r, w, b allowed)" % (mode,))
writing = "w" in mode
reading = "r" in mode or not writing
assert reading or writing
binary = "b" in mode
rawmode = ""
if reading:
rawmode += "r"
if writing:
rawmode += "w"
raw = SocketIO(self, rawmode)
self._makefile_refs += 1
if buffering is None:
buffering = -1
if buffering < 0:
buffering = io.DEFAULT_BUFFER_SIZE
if buffering == 0:
if not binary:
raise ValueError("unbuffered streams must be binary")
return raw
if reading and writing:
buffer = io.BufferedRWPair(raw, raw, buffering)
elif reading:
buffer = io.BufferedReader(raw, buffering)
else:
assert writing
buffer = io.BufferedWriter(raw, buffering)
if binary:
return buffer
text = io.TextIOWrapper(buffer, encoding, errors, newline)
text.mode = mode
return text
| 1,417 | Python | 26.26923 | 76 | 0.605505 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/urllib3/packages/backports/weakref_finalize.py | # -*- coding: utf-8 -*-
"""
backports.weakref_finalize
~~~~~~~~~~~~~~~~~~
Backports the Python 3 ``weakref.finalize`` method.
"""
from __future__ import absolute_import
import itertools
import sys
from weakref import ref
__all__ = ["weakref_finalize"]
class weakref_finalize(object):
"""Class for finalization of weakrefable objects
finalize(obj, func, *args, **kwargs) returns a callable finalizer
object which will be called when obj is garbage collected. The
first time the finalizer is called it evaluates func(*arg, **kwargs)
and returns the result. After this the finalizer is dead, and
calling it just returns None.
When the program exits any remaining finalizers for which the
atexit attribute is true will be run in reverse order of creation.
By default atexit is true.
"""
# Finalizer objects don't have any state of their own. They are
# just used as keys to lookup _Info objects in the registry. This
# ensures that they cannot be part of a ref-cycle.
__slots__ = ()
_registry = {}
_shutdown = False
_index_iter = itertools.count()
_dirty = False
_registered_with_atexit = False
class _Info(object):
__slots__ = ("weakref", "func", "args", "kwargs", "atexit", "index")
def __init__(self, obj, func, *args, **kwargs):
if not self._registered_with_atexit:
# We may register the exit function more than once because
# of a thread race, but that is harmless
import atexit
atexit.register(self._exitfunc)
weakref_finalize._registered_with_atexit = True
info = self._Info()
info.weakref = ref(obj, self)
info.func = func
info.args = args
info.kwargs = kwargs or None
info.atexit = True
info.index = next(self._index_iter)
self._registry[self] = info
weakref_finalize._dirty = True
def __call__(self, _=None):
"""If alive then mark as dead and return func(*args, **kwargs);
otherwise return None"""
info = self._registry.pop(self, None)
if info and not self._shutdown:
return info.func(*info.args, **(info.kwargs or {}))
def detach(self):
"""If alive then mark as dead and return (obj, func, args, kwargs);
otherwise return None"""
info = self._registry.get(self)
obj = info and info.weakref()
if obj is not None and self._registry.pop(self, None):
return (obj, info.func, info.args, info.kwargs or {})
def peek(self):
"""If alive then return (obj, func, args, kwargs);
otherwise return None"""
info = self._registry.get(self)
obj = info and info.weakref()
if obj is not None:
return (obj, info.func, info.args, info.kwargs or {})
@property
def alive(self):
"""Whether finalizer is alive"""
return self in self._registry
@property
def atexit(self):
"""Whether finalizer should be called at exit"""
info = self._registry.get(self)
return bool(info) and info.atexit
@atexit.setter
def atexit(self, value):
info = self._registry.get(self)
if info:
info.atexit = bool(value)
def __repr__(self):
info = self._registry.get(self)
obj = info and info.weakref()
if obj is None:
return "<%s object at %#x; dead>" % (type(self).__name__, id(self))
else:
return "<%s object at %#x; for %r at %#x>" % (
type(self).__name__,
id(self),
type(obj).__name__,
id(obj),
)
@classmethod
def _select_for_exit(cls):
# Return live finalizers marked for exit, oldest first
L = [(f, i) for (f, i) in cls._registry.items() if i.atexit]
L.sort(key=lambda item: item[1].index)
return [f for (f, i) in L]
@classmethod
def _exitfunc(cls):
# At shutdown invoke finalizers for which atexit is true.
# This is called once all other non-daemonic threads have been
# joined.
reenable_gc = False
try:
if cls._registry:
import gc
if gc.isenabled():
reenable_gc = True
gc.disable()
pending = None
while True:
if pending is None or weakref_finalize._dirty:
pending = cls._select_for_exit()
weakref_finalize._dirty = False
if not pending:
break
f = pending.pop()
try:
# gc is disabled, so (assuming no daemonic
# threads) the following is the only line in
# this function which might trigger creation
# of a new finalizer
f()
except Exception:
sys.excepthook(*sys.exc_info())
assert f not in cls._registry
finally:
# prevent any more finalizers from executing during shutdown
weakref_finalize._shutdown = True
if reenable_gc:
gc.enable()
| 5,343 | Python | 33.25641 | 79 | 0.551563 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/frozenlist/__init__.py | import os
import sys
import types
from collections.abc import MutableSequence
from functools import total_ordering
from typing import Tuple, Type
__version__ = "1.3.3"
__all__ = ("FrozenList", "PyFrozenList") # type: Tuple[str, ...]
NO_EXTENSIONS = bool(os.environ.get("FROZENLIST_NO_EXTENSIONS")) # type: bool
@total_ordering
class FrozenList(MutableSequence):
__slots__ = ("_frozen", "_items")
if sys.version_info >= (3, 9):
__class_getitem__ = classmethod(types.GenericAlias)
else:
@classmethod
def __class_getitem__(cls: Type["FrozenList"]) -> Type["FrozenList"]:
return cls
def __init__(self, items=None):
self._frozen = False
if items is not None:
items = list(items)
else:
items = []
self._items = items
@property
def frozen(self):
return self._frozen
def freeze(self):
self._frozen = True
def __getitem__(self, index):
return self._items[index]
def __setitem__(self, index, value):
if self._frozen:
raise RuntimeError("Cannot modify frozen list.")
self._items[index] = value
def __delitem__(self, index):
if self._frozen:
raise RuntimeError("Cannot modify frozen list.")
del self._items[index]
def __len__(self):
return self._items.__len__()
def __iter__(self):
return self._items.__iter__()
def __reversed__(self):
return self._items.__reversed__()
def __eq__(self, other):
return list(self) == other
def __le__(self, other):
return list(self) <= other
def insert(self, pos, item):
if self._frozen:
raise RuntimeError("Cannot modify frozen list.")
self._items.insert(pos, item)
def __repr__(self):
return f"<FrozenList(frozen={self._frozen}, {self._items!r})>"
def __hash__(self):
if self._frozen:
return hash(tuple(self))
else:
raise RuntimeError("Cannot hash unfrozen list.")
PyFrozenList = FrozenList
try:
from ._frozenlist import FrozenList as CFrozenList # type: ignore
if not NO_EXTENSIONS: # pragma: no cover
FrozenList = CFrozenList # type: ignore
except ImportError: # pragma: no cover
pass
| 2,323 | Python | 22.958763 | 78 | 0.583297 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/frozenlist/__init__.pyi | from typing import (
Generic,
Iterable,
Iterator,
List,
MutableSequence,
Optional,
TypeVar,
Union,
overload,
)
_T = TypeVar("_T")
_Arg = Union[List[_T], Iterable[_T]]
class FrozenList(MutableSequence[_T], Generic[_T]):
def __init__(self, items: Optional[_Arg[_T]] = None) -> None: ...
@property
def frozen(self) -> bool: ...
def freeze(self) -> None: ...
@overload
def __getitem__(self, i: int) -> _T: ...
@overload
def __getitem__(self, s: slice) -> FrozenList[_T]: ...
@overload
def __setitem__(self, i: int, o: _T) -> None: ...
@overload
def __setitem__(self, s: slice, o: Iterable[_T]) -> None: ...
@overload
def __delitem__(self, i: int) -> None: ...
@overload
def __delitem__(self, i: slice) -> None: ...
def __len__(self) -> int: ...
def __iter__(self) -> Iterator[_T]: ...
def __reversed__(self) -> Iterator[_T]: ...
def __eq__(self, other: object) -> bool: ...
def __le__(self, other: FrozenList[_T]) -> bool: ...
def __ne__(self, other: object) -> bool: ...
def __lt__(self, other: FrozenList[_T]) -> bool: ...
def __ge__(self, other: FrozenList[_T]) -> bool: ...
def __gt__(self, other: FrozenList[_T]) -> bool: ...
def insert(self, pos: int, item: _T) -> None: ...
def __repr__(self) -> str: ...
def __hash__(self) -> int: ...
# types for C accelerators are the same
CFrozenList = PyFrozenList = FrozenList
| 1,470 | unknown | 29.645833 | 69 | 0.528571 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/httptools/_version.py | # This file MUST NOT contain anything but the __version__ assignment.
#
# When making a release, change the value of __version__
# to an appropriate value, and open a pull request against
# the correct branch (master if making a new feature release).
# The commit message MUST contain a properly formatted release
# log, and the commit must be signed.
#
# The release automation will: build and test the packages for the
# supported platforms, publish the packages on PyPI, merge the PR
# to the target branch, create a Git tag pointing to the commit.
__version__ = '0.4.0'
| 575 | Python | 40.142854 | 69 | 0.749565 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/httptools/__init__.py | from . import parser
from .parser import * # NOQA
from ._version import __version__ # NOQA
__all__ = parser.__all__ + ('__version__',) # NOQA
| 147 | Python | 20.142854 | 51 | 0.591837 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/httptools/parser/url_parser.c | /* Generated by Cython 0.29.28 */
/* BEGIN: Cython Metadata
{
"distutils": {
"depends": [],
"extra_compile_args": [
"-O2"
],
"name": "httptools.parser.url_parser",
"sources": [
"httptools/parser/url_parser.pyx"
]
},
"module_name": "httptools.parser.url_parser"
}
END: Cython Metadata */
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#define PY_SSIZE_T_CLEAN
#endif /* PY_SSIZE_T_CLEAN */
#include "Python.h"
#ifndef Py_PYTHON_H
#error Python headers needed to compile C extensions, please install development version of Python.
#elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
#error Cython requires Python 2.6+ or Python 3.3+.
#else
#define CYTHON_ABI "0_29_28"
#define CYTHON_HEX_VERSION 0x001D1CF0
#define CYTHON_FUTURE_DIVISION 1
#include <stddef.h>
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#ifndef __fastcall
#define __fastcall
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#define DL_IMPORT(t) t
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#ifndef DL_EXPORT
#define DL_EXPORT(t) t
#endif
#define __PYX_COMMA ,
#ifndef HAVE_LONG_LONG
#if PY_VERSION_HEX >= 0x02070000
#define HAVE_LONG_LONG
#endif
#endif
#ifndef PY_LONG_LONG
#define PY_LONG_LONG LONG_LONG
#endif
#ifndef Py_HUGE_VAL
#define Py_HUGE_VAL HUGE_VAL
#endif
#ifdef PYPY_VERSION
#define CYTHON_COMPILING_IN_PYPY 1
#define CYTHON_COMPILING_IN_PYSTON 0
#define CYTHON_COMPILING_IN_CPYTHON 0
#undef CYTHON_USE_TYPE_SLOTS
#define CYTHON_USE_TYPE_SLOTS 0
#undef CYTHON_USE_PYTYPE_LOOKUP
#define CYTHON_USE_PYTYPE_LOOKUP 0
#if PY_VERSION_HEX < 0x03050000
#undef CYTHON_USE_ASYNC_SLOTS
#define CYTHON_USE_ASYNC_SLOTS 0
#elif !defined(CYTHON_USE_ASYNC_SLOTS)
#define CYTHON_USE_ASYNC_SLOTS 1
#endif
#undef CYTHON_USE_PYLIST_INTERNALS
#define CYTHON_USE_PYLIST_INTERNALS 0
#undef CYTHON_USE_UNICODE_INTERNALS
#define CYTHON_USE_UNICODE_INTERNALS 0
#undef CYTHON_USE_UNICODE_WRITER
#define CYTHON_USE_UNICODE_WRITER 0
#undef CYTHON_USE_PYLONG_INTERNALS
#define CYTHON_USE_PYLONG_INTERNALS 0
#undef CYTHON_AVOID_BORROWED_REFS
#define CYTHON_AVOID_BORROWED_REFS 1
#undef CYTHON_ASSUME_SAFE_MACROS
#define CYTHON_ASSUME_SAFE_MACROS 0
#undef CYTHON_UNPACK_METHODS
#define CYTHON_UNPACK_METHODS 0
#undef CYTHON_FAST_THREAD_STATE
#define CYTHON_FAST_THREAD_STATE 0
#undef CYTHON_FAST_PYCALL
#define CYTHON_FAST_PYCALL 0
#undef CYTHON_PEP489_MULTI_PHASE_INIT
#define CYTHON_PEP489_MULTI_PHASE_INIT 0
#undef CYTHON_USE_TP_FINALIZE
#define CYTHON_USE_TP_FINALIZE 0
#undef CYTHON_USE_DICT_VERSIONS
#define CYTHON_USE_DICT_VERSIONS 0
#undef CYTHON_USE_EXC_INFO_STACK
#define CYTHON_USE_EXC_INFO_STACK 0
#elif defined(PYSTON_VERSION)
#define CYTHON_COMPILING_IN_PYPY 0
#define CYTHON_COMPILING_IN_PYSTON 1
#define CYTHON_COMPILING_IN_CPYTHON 0
#ifndef CYTHON_USE_TYPE_SLOTS
#define CYTHON_USE_TYPE_SLOTS 1
#endif
#undef CYTHON_USE_PYTYPE_LOOKUP
#define CYTHON_USE_PYTYPE_LOOKUP 0
#undef CYTHON_USE_ASYNC_SLOTS
#define CYTHON_USE_ASYNC_SLOTS 0
#undef CYTHON_USE_PYLIST_INTERNALS
#define CYTHON_USE_PYLIST_INTERNALS 0
#ifndef CYTHON_USE_UNICODE_INTERNALS
#define CYTHON_USE_UNICODE_INTERNALS 1
#endif
#undef CYTHON_USE_UNICODE_WRITER
#define CYTHON_USE_UNICODE_WRITER 0
#undef CYTHON_USE_PYLONG_INTERNALS
#define CYTHON_USE_PYLONG_INTERNALS 0
#ifndef CYTHON_AVOID_BORROWED_REFS
#define CYTHON_AVOID_BORROWED_REFS 0
#endif
#ifndef CYTHON_ASSUME_SAFE_MACROS
#define CYTHON_ASSUME_SAFE_MACROS 1
#endif
#ifndef CYTHON_UNPACK_METHODS
#define CYTHON_UNPACK_METHODS 1
#endif
#undef CYTHON_FAST_THREAD_STATE
#define CYTHON_FAST_THREAD_STATE 0
#undef CYTHON_FAST_PYCALL
#define CYTHON_FAST_PYCALL 0
#undef CYTHON_PEP489_MULTI_PHASE_INIT
#define CYTHON_PEP489_MULTI_PHASE_INIT 0
#undef CYTHON_USE_TP_FINALIZE
#define CYTHON_USE_TP_FINALIZE 0
#undef CYTHON_USE_DICT_VERSIONS
#define CYTHON_USE_DICT_VERSIONS 0
#undef CYTHON_USE_EXC_INFO_STACK
#define CYTHON_USE_EXC_INFO_STACK 0
#else
#define CYTHON_COMPILING_IN_PYPY 0
#define CYTHON_COMPILING_IN_PYSTON 0
#define CYTHON_COMPILING_IN_CPYTHON 1
#ifndef CYTHON_USE_TYPE_SLOTS
#define CYTHON_USE_TYPE_SLOTS 1
#endif
#if PY_VERSION_HEX < 0x02070000
#undef CYTHON_USE_PYTYPE_LOOKUP
#define CYTHON_USE_PYTYPE_LOOKUP 0
#elif !defined(CYTHON_USE_PYTYPE_LOOKUP)
#define CYTHON_USE_PYTYPE_LOOKUP 1
#endif
#if PY_MAJOR_VERSION < 3
#undef CYTHON_USE_ASYNC_SLOTS
#define CYTHON_USE_ASYNC_SLOTS 0
#elif !defined(CYTHON_USE_ASYNC_SLOTS)
#define CYTHON_USE_ASYNC_SLOTS 1
#endif
#if PY_VERSION_HEX < 0x02070000
#undef CYTHON_USE_PYLONG_INTERNALS
#define CYTHON_USE_PYLONG_INTERNALS 0
#elif !defined(CYTHON_USE_PYLONG_INTERNALS)
#define CYTHON_USE_PYLONG_INTERNALS 1
#endif
#ifndef CYTHON_USE_PYLIST_INTERNALS
#define CYTHON_USE_PYLIST_INTERNALS 1
#endif
#ifndef CYTHON_USE_UNICODE_INTERNALS
#define CYTHON_USE_UNICODE_INTERNALS 1
#endif
#if PY_VERSION_HEX < 0x030300F0 || PY_VERSION_HEX >= 0x030B00A2
#undef CYTHON_USE_UNICODE_WRITER
#define CYTHON_USE_UNICODE_WRITER 0
#elif !defined(CYTHON_USE_UNICODE_WRITER)
#define CYTHON_USE_UNICODE_WRITER 1
#endif
#ifndef CYTHON_AVOID_BORROWED_REFS
#define CYTHON_AVOID_BORROWED_REFS 0
#endif
#ifndef CYTHON_ASSUME_SAFE_MACROS
#define CYTHON_ASSUME_SAFE_MACROS 1
#endif
#ifndef CYTHON_UNPACK_METHODS
#define CYTHON_UNPACK_METHODS 1
#endif
#if PY_VERSION_HEX >= 0x030B00A4
#undef CYTHON_FAST_THREAD_STATE
#define CYTHON_FAST_THREAD_STATE 0
#elif !defined(CYTHON_FAST_THREAD_STATE)
#define CYTHON_FAST_THREAD_STATE 1
#endif
#ifndef CYTHON_FAST_PYCALL
#define CYTHON_FAST_PYCALL (PY_VERSION_HEX < 0x030B00A1)
#endif
#ifndef CYTHON_PEP489_MULTI_PHASE_INIT
#define CYTHON_PEP489_MULTI_PHASE_INIT (PY_VERSION_HEX >= 0x03050000)
#endif
#ifndef CYTHON_USE_TP_FINALIZE
#define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
#endif
#ifndef CYTHON_USE_DICT_VERSIONS
#define CYTHON_USE_DICT_VERSIONS (PY_VERSION_HEX >= 0x030600B1)
#endif
#if PY_VERSION_HEX >= 0x030B00A4
#undef CYTHON_USE_EXC_INFO_STACK
#define CYTHON_USE_EXC_INFO_STACK 0
#elif !defined(CYTHON_USE_EXC_INFO_STACK)
#define CYTHON_USE_EXC_INFO_STACK (PY_VERSION_HEX >= 0x030700A3)
#endif
#endif
#if !defined(CYTHON_FAST_PYCCALL)
#define CYTHON_FAST_PYCCALL (CYTHON_FAST_PYCALL && PY_VERSION_HEX >= 0x030600B1)
#endif
#if CYTHON_USE_PYLONG_INTERNALS
#if PY_MAJOR_VERSION < 3
#include "longintrepr.h"
#endif
#undef SHIFT
#undef BASE
#undef MASK
#ifdef SIZEOF_VOID_P
enum { __pyx_check_sizeof_voidp = 1 / (int)(SIZEOF_VOID_P == sizeof(void*)) };
#endif
#endif
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
#ifndef __has_cpp_attribute
#define __has_cpp_attribute(x) 0
#endif
#ifndef CYTHON_RESTRICT
#if defined(__GNUC__)
#define CYTHON_RESTRICT __restrict__
#elif defined(_MSC_VER) && _MSC_VER >= 1400
#define CYTHON_RESTRICT __restrict
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define CYTHON_RESTRICT restrict
#else
#define CYTHON_RESTRICT
#endif
#endif
#ifndef CYTHON_UNUSED
# if defined(__GNUC__)
# if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
# define CYTHON_UNUSED __attribute__ ((__unused__))
# else
# define CYTHON_UNUSED
# endif
# elif defined(__ICC) || (defined(__INTEL_COMPILER) && !defined(_MSC_VER))
# define CYTHON_UNUSED __attribute__ ((__unused__))
# else
# define CYTHON_UNUSED
# endif
#endif
#ifndef CYTHON_MAYBE_UNUSED_VAR
# if defined(__cplusplus)
template<class T> void CYTHON_MAYBE_UNUSED_VAR( const T& ) { }
# else
# define CYTHON_MAYBE_UNUSED_VAR(x) (void)(x)
# endif
#endif
#ifndef CYTHON_NCP_UNUSED
# if CYTHON_COMPILING_IN_CPYTHON
# define CYTHON_NCP_UNUSED
# else
# define CYTHON_NCP_UNUSED CYTHON_UNUSED
# endif
#endif
#define __Pyx_void_to_None(void_result) ((void)(void_result), Py_INCREF(Py_None), Py_None)
#ifdef _MSC_VER
#ifndef _MSC_STDINT_H_
#if _MSC_VER < 1300
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
#else
typedef unsigned __int8 uint8_t;
typedef unsigned __int32 uint32_t;
#endif
#endif
#else
#include <stdint.h>
#endif
#ifndef CYTHON_FALLTHROUGH
#if defined(__cplusplus) && __cplusplus >= 201103L
#if __has_cpp_attribute(fallthrough)
#define CYTHON_FALLTHROUGH [[fallthrough]]
#elif __has_cpp_attribute(clang::fallthrough)
#define CYTHON_FALLTHROUGH [[clang::fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
#define CYTHON_FALLTHROUGH [[gnu::fallthrough]]
#endif
#endif
#ifndef CYTHON_FALLTHROUGH
#if __has_attribute(fallthrough)
#define CYTHON_FALLTHROUGH __attribute__((fallthrough))
#else
#define CYTHON_FALLTHROUGH
#endif
#endif
#if defined(__clang__ ) && defined(__apple_build_version__)
#if __apple_build_version__ < 7000000
#undef CYTHON_FALLTHROUGH
#define CYTHON_FALLTHROUGH
#endif
#endif
#endif
#ifndef CYTHON_INLINE
#if defined(__clang__)
#define CYTHON_INLINE __inline__ __attribute__ ((__unused__))
#elif defined(__GNUC__)
#define CYTHON_INLINE __inline__
#elif defined(_MSC_VER)
#define CYTHON_INLINE __inline
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define CYTHON_INLINE inline
#else
#define CYTHON_INLINE
#endif
#endif
#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX < 0x02070600 && !defined(Py_OptimizeFlag)
#define Py_OptimizeFlag 0
#endif
#define __PYX_BUILD_PY_SSIZE_T "n"
#define CYTHON_FORMAT_SSIZE_T "z"
#if PY_MAJOR_VERSION < 3
#define __Pyx_BUILTIN_MODULE_NAME "__builtin__"
#define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
PyCode_New(a+k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
#define __Pyx_DefaultClassType PyClass_Type
#else
#define __Pyx_BUILTIN_MODULE_NAME "builtins"
#define __Pyx_DefaultClassType PyType_Type
#if PY_VERSION_HEX >= 0x030B00A1
static CYTHON_INLINE PyCodeObject* __Pyx_PyCode_New(int a, int k, int l, int s, int f,
PyObject *code, PyObject *c, PyObject* n, PyObject *v,
PyObject *fv, PyObject *cell, PyObject* fn,
PyObject *name, int fline, PyObject *lnos) {
PyObject *kwds=NULL, *argcount=NULL, *posonlyargcount=NULL, *kwonlyargcount=NULL;
PyObject *nlocals=NULL, *stacksize=NULL, *flags=NULL, *replace=NULL, *call_result=NULL, *empty=NULL;
const char *fn_cstr=NULL;
const char *name_cstr=NULL;
PyCodeObject* co=NULL;
PyObject *type, *value, *traceback;
PyErr_Fetch(&type, &value, &traceback);
if (!(kwds=PyDict_New())) goto end;
if (!(argcount=PyLong_FromLong(a))) goto end;
if (PyDict_SetItemString(kwds, "co_argcount", argcount) != 0) goto end;
if (!(posonlyargcount=PyLong_FromLong(0))) goto end;
if (PyDict_SetItemString(kwds, "co_posonlyargcount", posonlyargcount) != 0) goto end;
if (!(kwonlyargcount=PyLong_FromLong(k))) goto end;
if (PyDict_SetItemString(kwds, "co_kwonlyargcount", kwonlyargcount) != 0) goto end;
if (!(nlocals=PyLong_FromLong(l))) goto end;
if (PyDict_SetItemString(kwds, "co_nlocals", nlocals) != 0) goto end;
if (!(stacksize=PyLong_FromLong(s))) goto end;
if (PyDict_SetItemString(kwds, "co_stacksize", stacksize) != 0) goto end;
if (!(flags=PyLong_FromLong(f))) goto end;
if (PyDict_SetItemString(kwds, "co_flags", flags) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_code", code) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_consts", c) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_names", n) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_varnames", v) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_freevars", fv) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_cellvars", cell) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_linetable", lnos) != 0) goto end;
if (!(fn_cstr=PyUnicode_AsUTF8AndSize(fn, NULL))) goto end;
if (!(name_cstr=PyUnicode_AsUTF8AndSize(name, NULL))) goto end;
if (!(co = PyCode_NewEmpty(fn_cstr, name_cstr, fline))) goto end;
if (!(replace = PyObject_GetAttrString((PyObject*)co, "replace"))) goto cleanup_code_too;
if (!(empty = PyTuple_New(0))) goto cleanup_code_too; // unfortunately __pyx_empty_tuple isn't available here
if (!(call_result = PyObject_Call(replace, empty, kwds))) goto cleanup_code_too;
Py_XDECREF((PyObject*)co);
co = (PyCodeObject*)call_result;
call_result = NULL;
if (0) {
cleanup_code_too:
Py_XDECREF((PyObject*)co);
co = NULL;
}
end:
Py_XDECREF(kwds);
Py_XDECREF(argcount);
Py_XDECREF(posonlyargcount);
Py_XDECREF(kwonlyargcount);
Py_XDECREF(nlocals);
Py_XDECREF(stacksize);
Py_XDECREF(replace);
Py_XDECREF(call_result);
Py_XDECREF(empty);
if (type) {
PyErr_Restore(type, value, traceback);
}
return co;
}
#else
#define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
#endif
#define __Pyx_DefaultClassType PyType_Type
#endif
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#define Py_TPFLAGS_CHECKTYPES 0
#endif
#ifndef Py_TPFLAGS_HAVE_INDEX
#define Py_TPFLAGS_HAVE_INDEX 0
#endif
#ifndef Py_TPFLAGS_HAVE_NEWBUFFER
#define Py_TPFLAGS_HAVE_NEWBUFFER 0
#endif
#ifndef Py_TPFLAGS_HAVE_FINALIZE
#define Py_TPFLAGS_HAVE_FINALIZE 0
#endif
#ifndef METH_STACKLESS
#define METH_STACKLESS 0
#endif
#if PY_VERSION_HEX <= 0x030700A3 || !defined(METH_FASTCALL)
#ifndef METH_FASTCALL
#define METH_FASTCALL 0x80
#endif
typedef PyObject *(*__Pyx_PyCFunctionFast) (PyObject *self, PyObject *const *args, Py_ssize_t nargs);
typedef PyObject *(*__Pyx_PyCFunctionFastWithKeywords) (PyObject *self, PyObject *const *args,
Py_ssize_t nargs, PyObject *kwnames);
#else
#define __Pyx_PyCFunctionFast _PyCFunctionFast
#define __Pyx_PyCFunctionFastWithKeywords _PyCFunctionFastWithKeywords
#endif
#if CYTHON_FAST_PYCCALL
#define __Pyx_PyFastCFunction_Check(func)\
((PyCFunction_Check(func) && (METH_FASTCALL == (PyCFunction_GET_FLAGS(func) & ~(METH_CLASS | METH_STATIC | METH_COEXIST | METH_KEYWORDS | METH_STACKLESS)))))
#else
#define __Pyx_PyFastCFunction_Check(func) 0
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Malloc)
#define PyObject_Malloc(s) PyMem_Malloc(s)
#define PyObject_Free(p) PyMem_Free(p)
#define PyObject_Realloc(p) PyMem_Realloc(p)
#endif
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030400A1
#define PyMem_RawMalloc(n) PyMem_Malloc(n)
#define PyMem_RawRealloc(p, n) PyMem_Realloc(p, n)
#define PyMem_RawFree(p) PyMem_Free(p)
#endif
#if CYTHON_COMPILING_IN_PYSTON
#define __Pyx_PyCode_HasFreeVars(co) PyCode_HasFreeVars(co)
#define __Pyx_PyFrame_SetLineNumber(frame, lineno) PyFrame_SetLineNumber(frame, lineno)
#else
#define __Pyx_PyCode_HasFreeVars(co) (PyCode_GetNumFree(co) > 0)
#define __Pyx_PyFrame_SetLineNumber(frame, lineno) (frame)->f_lineno = (lineno)
#endif
#if !CYTHON_FAST_THREAD_STATE || PY_VERSION_HEX < 0x02070000
#define __Pyx_PyThreadState_Current PyThreadState_GET()
#elif PY_VERSION_HEX >= 0x03060000
#define __Pyx_PyThreadState_Current _PyThreadState_UncheckedGet()
#elif PY_VERSION_HEX >= 0x03000000
#define __Pyx_PyThreadState_Current PyThreadState_GET()
#else
#define __Pyx_PyThreadState_Current _PyThreadState_Current
#endif
#if PY_VERSION_HEX < 0x030700A2 && !defined(PyThread_tss_create) && !defined(Py_tss_NEEDS_INIT)
#include "pythread.h"
#define Py_tss_NEEDS_INIT 0
typedef int Py_tss_t;
static CYTHON_INLINE int PyThread_tss_create(Py_tss_t *key) {
*key = PyThread_create_key();
return 0;
}
static CYTHON_INLINE Py_tss_t * PyThread_tss_alloc(void) {
Py_tss_t *key = (Py_tss_t *)PyObject_Malloc(sizeof(Py_tss_t));
*key = Py_tss_NEEDS_INIT;
return key;
}
static CYTHON_INLINE void PyThread_tss_free(Py_tss_t *key) {
PyObject_Free(key);
}
static CYTHON_INLINE int PyThread_tss_is_created(Py_tss_t *key) {
return *key != Py_tss_NEEDS_INIT;
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#define __PYX_EXTERN_C extern
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#define __PYX_HAVE__httptools__parser__url_parser
#define __PYX_HAVE_API__httptools__parser__url_parser
/* Early includes */
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#include <stdio.h>
#include "pythread.h"
#include <stdint.h>
#include "http_parser.h"
#ifdef _OPENMP
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const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry;
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#define __PYX_DEFAULT_STRING_ENCODING_IS_UTF8 0
#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT (PY_MAJOR_VERSION >= 3 && __PYX_DEFAULT_STRING_ENCODING_IS_UTF8)
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#define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
#define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
#define __Pyx_uchar_cast(c) ((unsigned char)c)
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#define __Pyx_fits_Py_ssize_t(v, type, is_signed) (\
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likely(v < (type)PY_SSIZE_T_MAX ||\
v == (type)PY_SSIZE_T_MAX) &&\
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(sizeof(type) == sizeof(Py_ssize_t) &&\
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#define __Pyx_sst_abs(value) labs(value)
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#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define __Pyx_sst_abs(value) llabs(value)
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#define __Pyx_PyBytes_FromString PyBytes_FromString
#define __Pyx_PyBytes_FromStringAndSize PyBytes_FromStringAndSize
static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char*);
#if PY_MAJOR_VERSION < 3
#define __Pyx_PyStr_FromString __Pyx_PyBytes_FromString
#define __Pyx_PyStr_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
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static CYTHON_INLINE PyObject * __Pyx_PyBool_FromLong(long b);
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#define __Pyx_PyNumber_Int(x) (PyLong_CheckExact(x) ? __Pyx_NewRef(x) : PyNumber_Long(x))
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PyObject* default_encoding = NULL;
PyObject* ascii_chars_u = NULL;
PyObject* ascii_chars_b = NULL;
const char* default_encoding_c;
sys = PyImport_ImportModule("sys");
if (!sys) goto bad;
default_encoding = PyObject_CallMethod(sys, (char*) "getdefaultencoding", NULL);
Py_DECREF(sys);
if (!default_encoding) goto bad;
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goto bad;
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char* default_encoding_c;
sys = PyImport_ImportModule("sys");
if (!sys) goto bad;
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Py_DECREF(sys);
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default_encoding_c = PyBytes_AsString(default_encoding);
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__PYX_DEFAULT_STRING_ENCODING = (char*) malloc(strlen(default_encoding_c) + 1);
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strcpy(__PYX_DEFAULT_STRING_ENCODING, default_encoding_c);
Py_DECREF(default_encoding);
return 0;
bad:
Py_XDECREF(default_encoding);
return -1;
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static PyObject *__pyx_cython_runtime = NULL;
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"complex.pxd",
};
/*--- Type declarations ---*/
struct __pyx_obj_9httptools_6parser_10url_parser_URL;
/* "httptools/parser/url_parser.pyx":16
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struct __pyx_obj_9httptools_6parser_10url_parser_URL {
PyObject_HEAD
PyObject *schema;
PyObject *host;
PyObject *port;
PyObject *path;
PyObject *query;
PyObject *fragment;
PyObject *userinfo;
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static const char __pyx_k_result[] = "result";
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static const char __pyx_k_fragment[] = "fragment";
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static const char __pyx_k_setstate[] = "__setstate__";
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static const char __pyx_k_TypeError[] = "TypeError";
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static const char __pyx_k_reduce_cython[] = "__reduce_cython__";
static const char __pyx_k_setstate_cython[] = "__setstate_cython__";
static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
static const char __pyx_k_HttpParserInvalidURLError[] = "HttpParserInvalidURLError";
static const char __pyx_k_httptools_parser_url_parser[] = "httptools.parser.url_parser";
static const char __pyx_k_URL_schema_r_host_r_port_r_path[] = "<URL schema: {!r}, host: {!r}, port: {!r}, path: {!r}, query: {!r}, fragment: {!r}, userinfo: {!r}>";
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static const char __pyx_k_no_default___reduce___due_to_non[] = "no default __reduce__ due to non-trivial __cinit__";
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m = PyImport_ImportModule(modname);
if (!m) goto end;
p = PyObject_GetAttrString(m, "RefNannyAPI");
if (!p) goto end;
r = PyLong_AsVoidPtr(p);
end:
Py_XDECREF(p);
Py_XDECREF(m);
return (__Pyx_RefNannyAPIStruct *)r;
}
#endif
/* PyObjectGetAttrStr */
#if CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStr(PyObject* obj, PyObject* attr_name) {
PyTypeObject* tp = Py_TYPE(obj);
if (likely(tp->tp_getattro))
return tp->tp_getattro(obj, attr_name);
#if PY_MAJOR_VERSION < 3
if (likely(tp->tp_getattr))
return tp->tp_getattr(obj, PyString_AS_STRING(attr_name));
#endif
return PyObject_GetAttr(obj, attr_name);
}
#endif
/* GetBuiltinName */
static PyObject *__Pyx_GetBuiltinName(PyObject *name) {
PyObject* result = __Pyx_PyObject_GetAttrStr(__pyx_b, name);
if (unlikely(!result)) {
PyErr_Format(PyExc_NameError,
#if PY_MAJOR_VERSION >= 3
"name '%U' is not defined", name);
#else
"name '%.200s' is not defined", PyString_AS_STRING(name));
#endif
}
return result;
}
/* RaiseArgTupleInvalid */
static void __Pyx_RaiseArgtupleInvalid(
const char* func_name,
int exact,
Py_ssize_t num_min,
Py_ssize_t num_max,
Py_ssize_t num_found)
{
Py_ssize_t num_expected;
const char *more_or_less;
if (num_found < num_min) {
num_expected = num_min;
more_or_less = "at least";
} else {
num_expected = num_max;
more_or_less = "at most";
}
if (exact) {
more_or_less = "exactly";
}
PyErr_Format(PyExc_TypeError,
"%.200s() takes %.8s %" CYTHON_FORMAT_SSIZE_T "d positional argument%.1s (%" CYTHON_FORMAT_SSIZE_T "d given)",
func_name, more_or_less, num_expected,
(num_expected == 1) ? "" : "s", num_found);
}
/* RaiseDoubleKeywords */
static void __Pyx_RaiseDoubleKeywordsError(
const char* func_name,
PyObject* kw_name)
{
PyErr_Format(PyExc_TypeError,
#if PY_MAJOR_VERSION >= 3
"%s() got multiple values for keyword argument '%U'", func_name, kw_name);
#else
"%s() got multiple values for keyword argument '%s'", func_name,
PyString_AsString(kw_name));
#endif
}
/* ParseKeywords */
static int __Pyx_ParseOptionalKeywords(
PyObject *kwds,
PyObject **argnames[],
PyObject *kwds2,
PyObject *values[],
Py_ssize_t num_pos_args,
const char* function_name)
{
PyObject *key = 0, *value = 0;
Py_ssize_t pos = 0;
PyObject*** name;
PyObject*** first_kw_arg = argnames + num_pos_args;
while (PyDict_Next(kwds, &pos, &key, &value)) {
name = first_kw_arg;
while (*name && (**name != key)) name++;
if (*name) {
values[name-argnames] = value;
continue;
}
name = first_kw_arg;
#if PY_MAJOR_VERSION < 3
if (likely(PyString_Check(key))) {
while (*name) {
if ((CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**name) == PyString_GET_SIZE(key))
&& _PyString_Eq(**name, key)) {
values[name-argnames] = value;
break;
}
name++;
}
if (*name) continue;
else {
PyObject*** argname = argnames;
while (argname != first_kw_arg) {
if ((**argname == key) || (
(CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**argname) == PyString_GET_SIZE(key))
&& _PyString_Eq(**argname, key))) {
goto arg_passed_twice;
}
argname++;
}
}
} else
#endif
if (likely(PyUnicode_Check(key))) {
while (*name) {
int cmp = (**name == key) ? 0 :
#if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
(__Pyx_PyUnicode_GET_LENGTH(**name) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
#endif
PyUnicode_Compare(**name, key);
if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
if (cmp == 0) {
values[name-argnames] = value;
break;
}
name++;
}
if (*name) continue;
else {
PyObject*** argname = argnames;
while (argname != first_kw_arg) {
int cmp = (**argname == key) ? 0 :
#if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
(__Pyx_PyUnicode_GET_LENGTH(**argname) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
#endif
PyUnicode_Compare(**argname, key);
if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
if (cmp == 0) goto arg_passed_twice;
argname++;
}
}
} else
goto invalid_keyword_type;
if (kwds2) {
if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
} else {
goto invalid_keyword;
}
}
return 0;
arg_passed_twice:
__Pyx_RaiseDoubleKeywordsError(function_name, key);
goto bad;
invalid_keyword_type:
PyErr_Format(PyExc_TypeError,
"%.200s() keywords must be strings", function_name);
goto bad;
invalid_keyword:
PyErr_Format(PyExc_TypeError,
#if PY_MAJOR_VERSION < 3
"%.200s() got an unexpected keyword argument '%.200s'",
function_name, PyString_AsString(key));
#else
"%s() got an unexpected keyword argument '%U'",
function_name, key);
#endif
bad:
return -1;
}
/* ArgTypeTest */
static int __Pyx__ArgTypeTest(PyObject *obj, PyTypeObject *type, const char *name, int exact)
{
if (unlikely(!type)) {
PyErr_SetString(PyExc_SystemError, "Missing type object");
return 0;
}
else if (exact) {
#if PY_MAJOR_VERSION == 2
if ((type == &PyBaseString_Type) && likely(__Pyx_PyBaseString_CheckExact(obj))) return 1;
#endif
}
else {
if (likely(__Pyx_TypeCheck(obj, type))) return 1;
}
PyErr_Format(PyExc_TypeError,
"Argument '%.200s' has incorrect type (expected %.200s, got %.200s)",
name, type->tp_name, Py_TYPE(obj)->tp_name);
return 0;
}
/* PyFunctionFastCall */
#if CYTHON_FAST_PYCALL
static PyObject* __Pyx_PyFunction_FastCallNoKw(PyCodeObject *co, PyObject **args, Py_ssize_t na,
PyObject *globals) {
PyFrameObject *f;
PyThreadState *tstate = __Pyx_PyThreadState_Current;
PyObject **fastlocals;
Py_ssize_t i;
PyObject *result;
assert(globals != NULL);
/* XXX Perhaps we should create a specialized
PyFrame_New() that doesn't take locals, but does
take builtins without sanity checking them.
*/
assert(tstate != NULL);
f = PyFrame_New(tstate, co, globals, NULL);
if (f == NULL) {
return NULL;
}
fastlocals = __Pyx_PyFrame_GetLocalsplus(f);
for (i = 0; i < na; i++) {
Py_INCREF(*args);
fastlocals[i] = *args++;
}
result = PyEval_EvalFrameEx(f,0);
++tstate->recursion_depth;
Py_DECREF(f);
--tstate->recursion_depth;
return result;
}
#if 1 || PY_VERSION_HEX < 0x030600B1
static PyObject *__Pyx_PyFunction_FastCallDict(PyObject *func, PyObject **args, Py_ssize_t nargs, PyObject *kwargs) {
PyCodeObject *co = (PyCodeObject *)PyFunction_GET_CODE(func);
PyObject *globals = PyFunction_GET_GLOBALS(func);
PyObject *argdefs = PyFunction_GET_DEFAULTS(func);
PyObject *closure;
#if PY_MAJOR_VERSION >= 3
PyObject *kwdefs;
#endif
PyObject *kwtuple, **k;
PyObject **d;
Py_ssize_t nd;
Py_ssize_t nk;
PyObject *result;
assert(kwargs == NULL || PyDict_Check(kwargs));
nk = kwargs ? PyDict_Size(kwargs) : 0;
if (Py_EnterRecursiveCall((char*)" while calling a Python object")) {
return NULL;
}
if (
#if PY_MAJOR_VERSION >= 3
co->co_kwonlyargcount == 0 &&
#endif
likely(kwargs == NULL || nk == 0) &&
co->co_flags == (CO_OPTIMIZED | CO_NEWLOCALS | CO_NOFREE)) {
if (argdefs == NULL && co->co_argcount == nargs) {
result = __Pyx_PyFunction_FastCallNoKw(co, args, nargs, globals);
goto done;
}
else if (nargs == 0 && argdefs != NULL
&& co->co_argcount == Py_SIZE(argdefs)) {
/* function called with no arguments, but all parameters have
a default value: use default values as arguments .*/
args = &PyTuple_GET_ITEM(argdefs, 0);
result =__Pyx_PyFunction_FastCallNoKw(co, args, Py_SIZE(argdefs), globals);
goto done;
}
}
if (kwargs != NULL) {
Py_ssize_t pos, i;
kwtuple = PyTuple_New(2 * nk);
if (kwtuple == NULL) {
result = NULL;
goto done;
}
k = &PyTuple_GET_ITEM(kwtuple, 0);
pos = i = 0;
while (PyDict_Next(kwargs, &pos, &k[i], &k[i+1])) {
Py_INCREF(k[i]);
Py_INCREF(k[i+1]);
i += 2;
}
nk = i / 2;
}
else {
kwtuple = NULL;
k = NULL;
}
closure = PyFunction_GET_CLOSURE(func);
#if PY_MAJOR_VERSION >= 3
kwdefs = PyFunction_GET_KW_DEFAULTS(func);
#endif
if (argdefs != NULL) {
d = &PyTuple_GET_ITEM(argdefs, 0);
nd = Py_SIZE(argdefs);
}
else {
d = NULL;
nd = 0;
}
#if PY_MAJOR_VERSION >= 3
result = PyEval_EvalCodeEx((PyObject*)co, globals, (PyObject *)NULL,
args, (int)nargs,
k, (int)nk,
d, (int)nd, kwdefs, closure);
#else
result = PyEval_EvalCodeEx(co, globals, (PyObject *)NULL,
args, (int)nargs,
k, (int)nk,
d, (int)nd, closure);
#endif
Py_XDECREF(kwtuple);
done:
Py_LeaveRecursiveCall();
return result;
}
#endif
#endif
/* PyCFunctionFastCall */
#if CYTHON_FAST_PYCCALL
static CYTHON_INLINE PyObject * __Pyx_PyCFunction_FastCall(PyObject *func_obj, PyObject **args, Py_ssize_t nargs) {
PyCFunctionObject *func = (PyCFunctionObject*)func_obj;
PyCFunction meth = PyCFunction_GET_FUNCTION(func);
PyObject *self = PyCFunction_GET_SELF(func);
int flags = PyCFunction_GET_FLAGS(func);
assert(PyCFunction_Check(func));
assert(METH_FASTCALL == (flags & ~(METH_CLASS | METH_STATIC | METH_COEXIST | METH_KEYWORDS | METH_STACKLESS)));
assert(nargs >= 0);
assert(nargs == 0 || args != NULL);
/* _PyCFunction_FastCallDict() must not be called with an exception set,
because it may clear it (directly or indirectly) and so the
caller loses its exception */
assert(!PyErr_Occurred());
if ((PY_VERSION_HEX < 0x030700A0) || unlikely(flags & METH_KEYWORDS)) {
return (*((__Pyx_PyCFunctionFastWithKeywords)(void*)meth)) (self, args, nargs, NULL);
} else {
return (*((__Pyx_PyCFunctionFast)(void*)meth)) (self, args, nargs);
}
}
#endif
/* PyObjectCall */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_Call(PyObject *func, PyObject *arg, PyObject *kw) {
PyObject *result;
ternaryfunc call = Py_TYPE(func)->tp_call;
if (unlikely(!call))
return PyObject_Call(func, arg, kw);
if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
return NULL;
result = (*call)(func, arg, kw);
Py_LeaveRecursiveCall();
if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
PyErr_SetString(
PyExc_SystemError,
"NULL result without error in PyObject_Call");
}
return result;
}
#endif
/* PyErrFetchRestore */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx_ErrRestoreInState(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
tmp_type = tstate->curexc_type;
tmp_value = tstate->curexc_value;
tmp_tb = tstate->curexc_traceback;
tstate->curexc_type = type;
tstate->curexc_value = value;
tstate->curexc_traceback = tb;
Py_XDECREF(tmp_type);
Py_XDECREF(tmp_value);
Py_XDECREF(tmp_tb);
}
static CYTHON_INLINE void __Pyx_ErrFetchInState(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
*type = tstate->curexc_type;
*value = tstate->curexc_value;
*tb = tstate->curexc_traceback;
tstate->curexc_type = 0;
tstate->curexc_value = 0;
tstate->curexc_traceback = 0;
}
#endif
/* RaiseException */
#if PY_MAJOR_VERSION < 3
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb,
CYTHON_UNUSED PyObject *cause) {
__Pyx_PyThreadState_declare
Py_XINCREF(type);
if (!value || value == Py_None)
value = NULL;
else
Py_INCREF(value);
if (!tb || tb == Py_None)
tb = NULL;
else {
Py_INCREF(tb);
if (!PyTraceBack_Check(tb)) {
PyErr_SetString(PyExc_TypeError,
"raise: arg 3 must be a traceback or None");
goto raise_error;
}
}
if (PyType_Check(type)) {
#if CYTHON_COMPILING_IN_PYPY
if (!value) {
Py_INCREF(Py_None);
value = Py_None;
}
#endif
PyErr_NormalizeException(&type, &value, &tb);
} else {
if (value) {
PyErr_SetString(PyExc_TypeError,
"instance exception may not have a separate value");
goto raise_error;
}
value = type;
type = (PyObject*) Py_TYPE(type);
Py_INCREF(type);
if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
PyErr_SetString(PyExc_TypeError,
"raise: exception class must be a subclass of BaseException");
goto raise_error;
}
}
__Pyx_PyThreadState_assign
__Pyx_ErrRestore(type, value, tb);
return;
raise_error:
Py_XDECREF(value);
Py_XDECREF(type);
Py_XDECREF(tb);
return;
}
#else
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause) {
PyObject* owned_instance = NULL;
if (tb == Py_None) {
tb = 0;
} else if (tb && !PyTraceBack_Check(tb)) {
PyErr_SetString(PyExc_TypeError,
"raise: arg 3 must be a traceback or None");
goto bad;
}
if (value == Py_None)
value = 0;
if (PyExceptionInstance_Check(type)) {
if (value) {
PyErr_SetString(PyExc_TypeError,
"instance exception may not have a separate value");
goto bad;
}
value = type;
type = (PyObject*) Py_TYPE(value);
} else if (PyExceptionClass_Check(type)) {
PyObject *instance_class = NULL;
if (value && PyExceptionInstance_Check(value)) {
instance_class = (PyObject*) Py_TYPE(value);
if (instance_class != type) {
int is_subclass = PyObject_IsSubclass(instance_class, type);
if (!is_subclass) {
instance_class = NULL;
} else if (unlikely(is_subclass == -1)) {
goto bad;
} else {
type = instance_class;
}
}
}
if (!instance_class) {
PyObject *args;
if (!value)
args = PyTuple_New(0);
else if (PyTuple_Check(value)) {
Py_INCREF(value);
args = value;
} else
args = PyTuple_Pack(1, value);
if (!args)
goto bad;
owned_instance = PyObject_Call(type, args, NULL);
Py_DECREF(args);
if (!owned_instance)
goto bad;
value = owned_instance;
if (!PyExceptionInstance_Check(value)) {
PyErr_Format(PyExc_TypeError,
"calling %R should have returned an instance of "
"BaseException, not %R",
type, Py_TYPE(value));
goto bad;
}
}
} else {
PyErr_SetString(PyExc_TypeError,
"raise: exception class must be a subclass of BaseException");
goto bad;
}
if (cause) {
PyObject *fixed_cause;
if (cause == Py_None) {
fixed_cause = NULL;
} else if (PyExceptionClass_Check(cause)) {
fixed_cause = PyObject_CallObject(cause, NULL);
if (fixed_cause == NULL)
goto bad;
} else if (PyExceptionInstance_Check(cause)) {
fixed_cause = cause;
Py_INCREF(fixed_cause);
} else {
PyErr_SetString(PyExc_TypeError,
"exception causes must derive from "
"BaseException");
goto bad;
}
PyException_SetCause(value, fixed_cause);
}
PyErr_SetObject(type, value);
if (tb) {
#if CYTHON_COMPILING_IN_PYPY
PyObject *tmp_type, *tmp_value, *tmp_tb;
PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
Py_INCREF(tb);
PyErr_Restore(tmp_type, tmp_value, tb);
Py_XDECREF(tmp_tb);
#else
PyThreadState *tstate = __Pyx_PyThreadState_Current;
PyObject* tmp_tb = tstate->curexc_traceback;
if (tb != tmp_tb) {
Py_INCREF(tb);
tstate->curexc_traceback = tb;
Py_XDECREF(tmp_tb);
}
#endif
}
bad:
Py_XDECREF(owned_instance);
return;
}
#endif
/* PyDictVersioning */
#if CYTHON_USE_DICT_VERSIONS && CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE PY_UINT64_T __Pyx_get_tp_dict_version(PyObject *obj) {
PyObject *dict = Py_TYPE(obj)->tp_dict;
return likely(dict) ? __PYX_GET_DICT_VERSION(dict) : 0;
}
static CYTHON_INLINE PY_UINT64_T __Pyx_get_object_dict_version(PyObject *obj) {
PyObject **dictptr = NULL;
Py_ssize_t offset = Py_TYPE(obj)->tp_dictoffset;
if (offset) {
#if CYTHON_COMPILING_IN_CPYTHON
dictptr = (likely(offset > 0)) ? (PyObject **) ((char *)obj + offset) : _PyObject_GetDictPtr(obj);
#else
dictptr = _PyObject_GetDictPtr(obj);
#endif
}
return (dictptr && *dictptr) ? __PYX_GET_DICT_VERSION(*dictptr) : 0;
}
static CYTHON_INLINE int __Pyx_object_dict_version_matches(PyObject* obj, PY_UINT64_T tp_dict_version, PY_UINT64_T obj_dict_version) {
PyObject *dict = Py_TYPE(obj)->tp_dict;
if (unlikely(!dict) || unlikely(tp_dict_version != __PYX_GET_DICT_VERSION(dict)))
return 0;
return obj_dict_version == __Pyx_get_object_dict_version(obj);
}
#endif
/* GetModuleGlobalName */
#if CYTHON_USE_DICT_VERSIONS
static PyObject *__Pyx__GetModuleGlobalName(PyObject *name, PY_UINT64_T *dict_version, PyObject **dict_cached_value)
#else
static CYTHON_INLINE PyObject *__Pyx__GetModuleGlobalName(PyObject *name)
#endif
{
PyObject *result;
#if !CYTHON_AVOID_BORROWED_REFS
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x030500A1
result = _PyDict_GetItem_KnownHash(__pyx_d, name, ((PyASCIIObject *) name)->hash);
__PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
if (likely(result)) {
return __Pyx_NewRef(result);
} else if (unlikely(PyErr_Occurred())) {
return NULL;
}
#else
result = PyDict_GetItem(__pyx_d, name);
__PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
if (likely(result)) {
return __Pyx_NewRef(result);
}
#endif
#else
result = PyObject_GetItem(__pyx_d, name);
__PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
if (likely(result)) {
return __Pyx_NewRef(result);
}
PyErr_Clear();
#endif
return __Pyx_GetBuiltinName(name);
}
/* PyObjectCall2Args */
static CYTHON_UNUSED PyObject* __Pyx_PyObject_Call2Args(PyObject* function, PyObject* arg1, PyObject* arg2) {
PyObject *args, *result = NULL;
#if CYTHON_FAST_PYCALL
if (PyFunction_Check(function)) {
PyObject *args[2] = {arg1, arg2};
return __Pyx_PyFunction_FastCall(function, args, 2);
}
#endif
#if CYTHON_FAST_PYCCALL
if (__Pyx_PyFastCFunction_Check(function)) {
PyObject *args[2] = {arg1, arg2};
return __Pyx_PyCFunction_FastCall(function, args, 2);
}
#endif
args = PyTuple_New(2);
if (unlikely(!args)) goto done;
Py_INCREF(arg1);
PyTuple_SET_ITEM(args, 0, arg1);
Py_INCREF(arg2);
PyTuple_SET_ITEM(args, 1, arg2);
Py_INCREF(function);
result = __Pyx_PyObject_Call(function, args, NULL);
Py_DECREF(args);
Py_DECREF(function);
done:
return result;
}
/* PyObjectCallMethO */
#if CYTHON_COMPILING_IN_CPYTHON
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallMethO(PyObject *func, PyObject *arg) {
PyObject *self, *result;
PyCFunction cfunc;
cfunc = PyCFunction_GET_FUNCTION(func);
self = PyCFunction_GET_SELF(func);
if (unlikely(Py_EnterRecursiveCall((char*)" while calling a Python object")))
return NULL;
result = cfunc(self, arg);
Py_LeaveRecursiveCall();
if (unlikely(!result) && unlikely(!PyErr_Occurred())) {
PyErr_SetString(
PyExc_SystemError,
"NULL result without error in PyObject_Call");
}
return result;
}
#endif
/* PyObjectCallOneArg */
#if CYTHON_COMPILING_IN_CPYTHON
static PyObject* __Pyx__PyObject_CallOneArg(PyObject *func, PyObject *arg) {
PyObject *result;
PyObject *args = PyTuple_New(1);
if (unlikely(!args)) return NULL;
Py_INCREF(arg);
PyTuple_SET_ITEM(args, 0, arg);
result = __Pyx_PyObject_Call(func, args, NULL);
Py_DECREF(args);
return result;
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
#if CYTHON_FAST_PYCALL
if (PyFunction_Check(func)) {
return __Pyx_PyFunction_FastCall(func, &arg, 1);
}
#endif
if (likely(PyCFunction_Check(func))) {
if (likely(PyCFunction_GET_FLAGS(func) & METH_O)) {
return __Pyx_PyObject_CallMethO(func, arg);
#if CYTHON_FAST_PYCCALL
} else if (__Pyx_PyFastCFunction_Check(func)) {
return __Pyx_PyCFunction_FastCall(func, &arg, 1);
#endif
}
}
return __Pyx__PyObject_CallOneArg(func, arg);
}
#else
static CYTHON_INLINE PyObject* __Pyx_PyObject_CallOneArg(PyObject *func, PyObject *arg) {
PyObject *result;
PyObject *args = PyTuple_Pack(1, arg);
if (unlikely(!args)) return NULL;
result = __Pyx_PyObject_Call(func, args, NULL);
Py_DECREF(args);
return result;
}
#endif
/* GetException */
#if CYTHON_FAST_THREAD_STATE
static int __Pyx__GetException(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb)
#else
static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
#endif
{
PyObject *local_type, *local_value, *local_tb;
#if CYTHON_FAST_THREAD_STATE
PyObject *tmp_type, *tmp_value, *tmp_tb;
local_type = tstate->curexc_type;
local_value = tstate->curexc_value;
local_tb = tstate->curexc_traceback;
tstate->curexc_type = 0;
tstate->curexc_value = 0;
tstate->curexc_traceback = 0;
#else
PyErr_Fetch(&local_type, &local_value, &local_tb);
#endif
PyErr_NormalizeException(&local_type, &local_value, &local_tb);
#if CYTHON_FAST_THREAD_STATE
if (unlikely(tstate->curexc_type))
#else
if (unlikely(PyErr_Occurred()))
#endif
goto bad;
#if PY_MAJOR_VERSION >= 3
if (local_tb) {
if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
goto bad;
}
#endif
Py_XINCREF(local_tb);
Py_XINCREF(local_type);
Py_XINCREF(local_value);
*type = local_type;
*value = local_value;
*tb = local_tb;
#if CYTHON_FAST_THREAD_STATE
#if CYTHON_USE_EXC_INFO_STACK
{
_PyErr_StackItem *exc_info = tstate->exc_info;
tmp_type = exc_info->exc_type;
tmp_value = exc_info->exc_value;
tmp_tb = exc_info->exc_traceback;
exc_info->exc_type = local_type;
exc_info->exc_value = local_value;
exc_info->exc_traceback = local_tb;
}
#else
tmp_type = tstate->exc_type;
tmp_value = tstate->exc_value;
tmp_tb = tstate->exc_traceback;
tstate->exc_type = local_type;
tstate->exc_value = local_value;
tstate->exc_traceback = local_tb;
#endif
Py_XDECREF(tmp_type);
Py_XDECREF(tmp_value);
Py_XDECREF(tmp_tb);
#else
PyErr_SetExcInfo(local_type, local_value, local_tb);
#endif
return 0;
bad:
*type = 0;
*value = 0;
*tb = 0;
Py_XDECREF(local_type);
Py_XDECREF(local_value);
Py_XDECREF(local_tb);
return -1;
}
/* SwapException */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx__ExceptionSwap(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
#if CYTHON_USE_EXC_INFO_STACK
_PyErr_StackItem *exc_info = tstate->exc_info;
tmp_type = exc_info->exc_type;
tmp_value = exc_info->exc_value;
tmp_tb = exc_info->exc_traceback;
exc_info->exc_type = *type;
exc_info->exc_value = *value;
exc_info->exc_traceback = *tb;
#else
tmp_type = tstate->exc_type;
tmp_value = tstate->exc_value;
tmp_tb = tstate->exc_traceback;
tstate->exc_type = *type;
tstate->exc_value = *value;
tstate->exc_traceback = *tb;
#endif
*type = tmp_type;
*value = tmp_value;
*tb = tmp_tb;
}
#else
static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
PyErr_GetExcInfo(&tmp_type, &tmp_value, &tmp_tb);
PyErr_SetExcInfo(*type, *value, *tb);
*type = tmp_type;
*value = tmp_value;
*tb = tmp_tb;
}
#endif
/* GetTopmostException */
#if CYTHON_USE_EXC_INFO_STACK
static _PyErr_StackItem *
__Pyx_PyErr_GetTopmostException(PyThreadState *tstate)
{
_PyErr_StackItem *exc_info = tstate->exc_info;
while ((exc_info->exc_type == NULL || exc_info->exc_type == Py_None) &&
exc_info->previous_item != NULL)
{
exc_info = exc_info->previous_item;
}
return exc_info;
}
#endif
/* SaveResetException */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx__ExceptionSave(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
#if CYTHON_USE_EXC_INFO_STACK
_PyErr_StackItem *exc_info = __Pyx_PyErr_GetTopmostException(tstate);
*type = exc_info->exc_type;
*value = exc_info->exc_value;
*tb = exc_info->exc_traceback;
#else
*type = tstate->exc_type;
*value = tstate->exc_value;
*tb = tstate->exc_traceback;
#endif
Py_XINCREF(*type);
Py_XINCREF(*value);
Py_XINCREF(*tb);
}
static CYTHON_INLINE void __Pyx__ExceptionReset(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
#if CYTHON_USE_EXC_INFO_STACK
_PyErr_StackItem *exc_info = tstate->exc_info;
tmp_type = exc_info->exc_type;
tmp_value = exc_info->exc_value;
tmp_tb = exc_info->exc_traceback;
exc_info->exc_type = type;
exc_info->exc_value = value;
exc_info->exc_traceback = tb;
#else
tmp_type = tstate->exc_type;
tmp_value = tstate->exc_value;
tmp_tb = tstate->exc_traceback;
tstate->exc_type = type;
tstate->exc_value = value;
tstate->exc_traceback = tb;
#endif
Py_XDECREF(tmp_type);
Py_XDECREF(tmp_value);
Py_XDECREF(tmp_tb);
}
#endif
/* PyObject_GenericGetAttrNoDict */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject *__Pyx_RaiseGenericGetAttributeError(PyTypeObject *tp, PyObject *attr_name) {
PyErr_Format(PyExc_AttributeError,
#if PY_MAJOR_VERSION >= 3
"'%.50s' object has no attribute '%U'",
tp->tp_name, attr_name);
#else
"'%.50s' object has no attribute '%.400s'",
tp->tp_name, PyString_AS_STRING(attr_name));
#endif
return NULL;
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name) {
PyObject *descr;
PyTypeObject *tp = Py_TYPE(obj);
if (unlikely(!PyString_Check(attr_name))) {
return PyObject_GenericGetAttr(obj, attr_name);
}
assert(!tp->tp_dictoffset);
descr = _PyType_Lookup(tp, attr_name);
if (unlikely(!descr)) {
return __Pyx_RaiseGenericGetAttributeError(tp, attr_name);
}
Py_INCREF(descr);
#if PY_MAJOR_VERSION < 3
if (likely(PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_HAVE_CLASS)))
#endif
{
descrgetfunc f = Py_TYPE(descr)->tp_descr_get;
if (unlikely(f)) {
PyObject *res = f(descr, obj, (PyObject *)tp);
Py_DECREF(descr);
return res;
}
}
return descr;
}
#endif
/* PyObject_GenericGetAttr */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_name) {
if (unlikely(Py_TYPE(obj)->tp_dictoffset)) {
return PyObject_GenericGetAttr(obj, attr_name);
}
return __Pyx_PyObject_GenericGetAttrNoDict(obj, attr_name);
}
#endif
/* PyErrExceptionMatches */
#if CYTHON_FAST_THREAD_STATE
static int __Pyx_PyErr_ExceptionMatchesTuple(PyObject *exc_type, PyObject *tuple) {
Py_ssize_t i, n;
n = PyTuple_GET_SIZE(tuple);
#if PY_MAJOR_VERSION >= 3
for (i=0; i<n; i++) {
if (exc_type == PyTuple_GET_ITEM(tuple, i)) return 1;
}
#endif
for (i=0; i<n; i++) {
if (__Pyx_PyErr_GivenExceptionMatches(exc_type, PyTuple_GET_ITEM(tuple, i))) return 1;
}
return 0;
}
static CYTHON_INLINE int __Pyx_PyErr_ExceptionMatchesInState(PyThreadState* tstate, PyObject* err) {
PyObject *exc_type = tstate->curexc_type;
if (exc_type == err) return 1;
if (unlikely(!exc_type)) return 0;
if (unlikely(PyTuple_Check(err)))
return __Pyx_PyErr_ExceptionMatchesTuple(exc_type, err);
return __Pyx_PyErr_GivenExceptionMatches(exc_type, err);
}
#endif
/* PyObjectGetAttrStrNoError */
static void __Pyx_PyObject_GetAttrStr_ClearAttributeError(void) {
__Pyx_PyThreadState_declare
__Pyx_PyThreadState_assign
if (likely(__Pyx_PyErr_ExceptionMatches(PyExc_AttributeError)))
__Pyx_PyErr_Clear();
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStrNoError(PyObject* obj, PyObject* attr_name) {
PyObject *result;
#if CYTHON_COMPILING_IN_CPYTHON && CYTHON_USE_TYPE_SLOTS && PY_VERSION_HEX >= 0x030700B1
PyTypeObject* tp = Py_TYPE(obj);
if (likely(tp->tp_getattro == PyObject_GenericGetAttr)) {
return _PyObject_GenericGetAttrWithDict(obj, attr_name, NULL, 1);
}
#endif
result = __Pyx_PyObject_GetAttrStr(obj, attr_name);
if (unlikely(!result)) {
__Pyx_PyObject_GetAttrStr_ClearAttributeError();
}
return result;
}
/* SetupReduce */
static int __Pyx_setup_reduce_is_named(PyObject* meth, PyObject* name) {
int ret;
PyObject *name_attr;
name_attr = __Pyx_PyObject_GetAttrStr(meth, __pyx_n_s_name);
if (likely(name_attr)) {
ret = PyObject_RichCompareBool(name_attr, name, Py_EQ);
} else {
ret = -1;
}
if (unlikely(ret < 0)) {
PyErr_Clear();
ret = 0;
}
Py_XDECREF(name_attr);
return ret;
}
static int __Pyx_setup_reduce(PyObject* type_obj) {
int ret = 0;
PyObject *object_reduce = NULL;
PyObject *object_reduce_ex = NULL;
PyObject *reduce = NULL;
PyObject *reduce_ex = NULL;
PyObject *reduce_cython = NULL;
PyObject *setstate = NULL;
PyObject *setstate_cython = NULL;
#if CYTHON_USE_PYTYPE_LOOKUP
if (_PyType_Lookup((PyTypeObject*)type_obj, __pyx_n_s_getstate)) goto __PYX_GOOD;
#else
if (PyObject_HasAttr(type_obj, __pyx_n_s_getstate)) goto __PYX_GOOD;
#endif
#if CYTHON_USE_PYTYPE_LOOKUP
object_reduce_ex = _PyType_Lookup(&PyBaseObject_Type, __pyx_n_s_reduce_ex); if (!object_reduce_ex) goto __PYX_BAD;
#else
object_reduce_ex = __Pyx_PyObject_GetAttrStr((PyObject*)&PyBaseObject_Type, __pyx_n_s_reduce_ex); if (!object_reduce_ex) goto __PYX_BAD;
#endif
reduce_ex = __Pyx_PyObject_GetAttrStr(type_obj, __pyx_n_s_reduce_ex); if (unlikely(!reduce_ex)) goto __PYX_BAD;
if (reduce_ex == object_reduce_ex) {
#if CYTHON_USE_PYTYPE_LOOKUP
object_reduce = _PyType_Lookup(&PyBaseObject_Type, __pyx_n_s_reduce); if (!object_reduce) goto __PYX_BAD;
#else
object_reduce = __Pyx_PyObject_GetAttrStr((PyObject*)&PyBaseObject_Type, __pyx_n_s_reduce); if (!object_reduce) goto __PYX_BAD;
#endif
reduce = __Pyx_PyObject_GetAttrStr(type_obj, __pyx_n_s_reduce); if (unlikely(!reduce)) goto __PYX_BAD;
if (reduce == object_reduce || __Pyx_setup_reduce_is_named(reduce, __pyx_n_s_reduce_cython)) {
reduce_cython = __Pyx_PyObject_GetAttrStrNoError(type_obj, __pyx_n_s_reduce_cython);
if (likely(reduce_cython)) {
ret = PyDict_SetItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_reduce, reduce_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
ret = PyDict_DelItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_reduce_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
} else if (reduce == object_reduce || PyErr_Occurred()) {
goto __PYX_BAD;
}
setstate = __Pyx_PyObject_GetAttrStr(type_obj, __pyx_n_s_setstate);
if (!setstate) PyErr_Clear();
if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) {
setstate_cython = __Pyx_PyObject_GetAttrStrNoError(type_obj, __pyx_n_s_setstate_cython);
if (likely(setstate_cython)) {
ret = PyDict_SetItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_setstate, setstate_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
ret = PyDict_DelItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_setstate_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
} else if (!setstate || PyErr_Occurred()) {
goto __PYX_BAD;
}
}
PyType_Modified((PyTypeObject*)type_obj);
}
}
goto __PYX_GOOD;
__PYX_BAD:
if (!PyErr_Occurred())
PyErr_Format(PyExc_RuntimeError, "Unable to initialize pickling for %s", ((PyTypeObject*)type_obj)->tp_name);
ret = -1;
__PYX_GOOD:
#if !CYTHON_USE_PYTYPE_LOOKUP
Py_XDECREF(object_reduce);
Py_XDECREF(object_reduce_ex);
#endif
Py_XDECREF(reduce);
Py_XDECREF(reduce_ex);
Py_XDECREF(reduce_cython);
Py_XDECREF(setstate);
Py_XDECREF(setstate_cython);
return ret;
}
/* TypeImport */
#ifndef __PYX_HAVE_RT_ImportType
#define __PYX_HAVE_RT_ImportType
static PyTypeObject *__Pyx_ImportType(PyObject *module, const char *module_name, const char *class_name,
size_t size, enum __Pyx_ImportType_CheckSize check_size)
{
PyObject *result = 0;
char warning[200];
Py_ssize_t basicsize;
#ifdef Py_LIMITED_API
PyObject *py_basicsize;
#endif
result = PyObject_GetAttrString(module, class_name);
if (!result)
goto bad;
if (!PyType_Check(result)) {
PyErr_Format(PyExc_TypeError,
"%.200s.%.200s is not a type object",
module_name, class_name);
goto bad;
}
#ifndef Py_LIMITED_API
basicsize = ((PyTypeObject *)result)->tp_basicsize;
#else
py_basicsize = PyObject_GetAttrString(result, "__basicsize__");
if (!py_basicsize)
goto bad;
basicsize = PyLong_AsSsize_t(py_basicsize);
Py_DECREF(py_basicsize);
py_basicsize = 0;
if (basicsize == (Py_ssize_t)-1 && PyErr_Occurred())
goto bad;
#endif
if ((size_t)basicsize < size) {
PyErr_Format(PyExc_ValueError,
"%.200s.%.200s size changed, may indicate binary incompatibility. "
"Expected %zd from C header, got %zd from PyObject",
module_name, class_name, size, basicsize);
goto bad;
}
if (check_size == __Pyx_ImportType_CheckSize_Error && (size_t)basicsize != size) {
PyErr_Format(PyExc_ValueError,
"%.200s.%.200s size changed, may indicate binary incompatibility. "
"Expected %zd from C header, got %zd from PyObject",
module_name, class_name, size, basicsize);
goto bad;
}
else if (check_size == __Pyx_ImportType_CheckSize_Warn && (size_t)basicsize > size) {
PyOS_snprintf(warning, sizeof(warning),
"%s.%s size changed, may indicate binary incompatibility. "
"Expected %zd from C header, got %zd from PyObject",
module_name, class_name, size, basicsize);
if (PyErr_WarnEx(NULL, warning, 0) < 0) goto bad;
}
return (PyTypeObject *)result;
bad:
Py_XDECREF(result);
return NULL;
}
#endif
/* Import */
static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
PyObject *empty_list = 0;
PyObject *module = 0;
PyObject *global_dict = 0;
PyObject *empty_dict = 0;
PyObject *list;
#if PY_MAJOR_VERSION < 3
PyObject *py_import;
py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
if (!py_import)
goto bad;
#endif
if (from_list)
list = from_list;
else {
empty_list = PyList_New(0);
if (!empty_list)
goto bad;
list = empty_list;
}
global_dict = PyModule_GetDict(__pyx_m);
if (!global_dict)
goto bad;
empty_dict = PyDict_New();
if (!empty_dict)
goto bad;
{
#if PY_MAJOR_VERSION >= 3
if (level == -1) {
if ((1) && (strchr(__Pyx_MODULE_NAME, '.'))) {
module = PyImport_ImportModuleLevelObject(
name, global_dict, empty_dict, list, 1);
if (!module) {
if (!PyErr_ExceptionMatches(PyExc_ImportError))
goto bad;
PyErr_Clear();
}
}
level = 0;
}
#endif
if (!module) {
#if PY_MAJOR_VERSION < 3
PyObject *py_level = PyInt_FromLong(level);
if (!py_level)
goto bad;
module = PyObject_CallFunctionObjArgs(py_import,
name, global_dict, empty_dict, list, py_level, (PyObject *)NULL);
Py_DECREF(py_level);
#else
module = PyImport_ImportModuleLevelObject(
name, global_dict, empty_dict, list, level);
#endif
}
}
bad:
#if PY_MAJOR_VERSION < 3
Py_XDECREF(py_import);
#endif
Py_XDECREF(empty_list);
Py_XDECREF(empty_dict);
return module;
}
/* ImportFrom */
static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name) {
PyObject* value = __Pyx_PyObject_GetAttrStr(module, name);
if (unlikely(!value) && PyErr_ExceptionMatches(PyExc_AttributeError)) {
PyErr_Format(PyExc_ImportError,
#if PY_MAJOR_VERSION < 3
"cannot import name %.230s", PyString_AS_STRING(name));
#else
"cannot import name %S", name);
#endif
}
return value;
}
/* CLineInTraceback */
#ifndef CYTHON_CLINE_IN_TRACEBACK
static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
PyObject *use_cline;
PyObject *ptype, *pvalue, *ptraceback;
#if CYTHON_COMPILING_IN_CPYTHON
PyObject **cython_runtime_dict;
#endif
if (unlikely(!__pyx_cython_runtime)) {
return c_line;
}
__Pyx_ErrFetchInState(tstate, &ptype, &pvalue, &ptraceback);
#if CYTHON_COMPILING_IN_CPYTHON
cython_runtime_dict = _PyObject_GetDictPtr(__pyx_cython_runtime);
if (likely(cython_runtime_dict)) {
__PYX_PY_DICT_LOOKUP_IF_MODIFIED(
use_cline, *cython_runtime_dict,
__Pyx_PyDict_GetItemStr(*cython_runtime_dict, __pyx_n_s_cline_in_traceback))
} else
#endif
{
PyObject *use_cline_obj = __Pyx_PyObject_GetAttrStr(__pyx_cython_runtime, __pyx_n_s_cline_in_traceback);
if (use_cline_obj) {
use_cline = PyObject_Not(use_cline_obj) ? Py_False : Py_True;
Py_DECREF(use_cline_obj);
} else {
PyErr_Clear();
use_cline = NULL;
}
}
if (!use_cline) {
c_line = 0;
(void) PyObject_SetAttr(__pyx_cython_runtime, __pyx_n_s_cline_in_traceback, Py_False);
}
else if (use_cline == Py_False || (use_cline != Py_True && PyObject_Not(use_cline) != 0)) {
c_line = 0;
}
__Pyx_ErrRestoreInState(tstate, ptype, pvalue, ptraceback);
return c_line;
}
#endif
/* CodeObjectCache */
static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
int start = 0, mid = 0, end = count - 1;
if (end >= 0 && code_line > entries[end].code_line) {
return count;
}
while (start < end) {
mid = start + (end - start) / 2;
if (code_line < entries[mid].code_line) {
end = mid;
} else if (code_line > entries[mid].code_line) {
start = mid + 1;
} else {
return mid;
}
}
if (code_line <= entries[mid].code_line) {
return mid;
} else {
return mid + 1;
}
}
static PyCodeObject *__pyx_find_code_object(int code_line) {
PyCodeObject* code_object;
int pos;
if (unlikely(!code_line) || unlikely(!__pyx_code_cache.entries)) {
return NULL;
}
pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) {
return NULL;
}
code_object = __pyx_code_cache.entries[pos].code_object;
Py_INCREF(code_object);
return code_object;
}
static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
int pos, i;
__Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries;
if (unlikely(!code_line)) {
return;
}
if (unlikely(!entries)) {
entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry));
if (likely(entries)) {
__pyx_code_cache.entries = entries;
__pyx_code_cache.max_count = 64;
__pyx_code_cache.count = 1;
entries[0].code_line = code_line;
entries[0].code_object = code_object;
Py_INCREF(code_object);
}
return;
}
pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) {
PyCodeObject* tmp = entries[pos].code_object;
entries[pos].code_object = code_object;
Py_DECREF(tmp);
return;
}
if (__pyx_code_cache.count == __pyx_code_cache.max_count) {
int new_max = __pyx_code_cache.max_count + 64;
entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc(
__pyx_code_cache.entries, ((size_t)new_max) * sizeof(__Pyx_CodeObjectCacheEntry));
if (unlikely(!entries)) {
return;
}
__pyx_code_cache.entries = entries;
__pyx_code_cache.max_count = new_max;
}
for (i=__pyx_code_cache.count; i>pos; i--) {
entries[i] = entries[i-1];
}
entries[pos].code_line = code_line;
entries[pos].code_object = code_object;
__pyx_code_cache.count++;
Py_INCREF(code_object);
}
/* AddTraceback */
#include "compile.h"
#include "frameobject.h"
#include "traceback.h"
static PyCodeObject* __Pyx_CreateCodeObjectForTraceback(
const char *funcname, int c_line,
int py_line, const char *filename) {
PyCodeObject *py_code = NULL;
PyObject *py_funcname = NULL;
#if PY_MAJOR_VERSION < 3
PyObject *py_srcfile = NULL;
py_srcfile = PyString_FromString(filename);
if (!py_srcfile) goto bad;
#endif
if (c_line) {
#if PY_MAJOR_VERSION < 3
py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
if (!py_funcname) goto bad;
#else
py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
if (!py_funcname) goto bad;
funcname = PyUnicode_AsUTF8(py_funcname);
if (!funcname) goto bad;
#endif
}
else {
#if PY_MAJOR_VERSION < 3
py_funcname = PyString_FromString(funcname);
if (!py_funcname) goto bad;
#endif
}
#if PY_MAJOR_VERSION < 3
py_code = __Pyx_PyCode_New(
0,
0,
0,
0,
0,
__pyx_empty_bytes, /*PyObject *code,*/
__pyx_empty_tuple, /*PyObject *consts,*/
__pyx_empty_tuple, /*PyObject *names,*/
__pyx_empty_tuple, /*PyObject *varnames,*/
__pyx_empty_tuple, /*PyObject *freevars,*/
__pyx_empty_tuple, /*PyObject *cellvars,*/
py_srcfile, /*PyObject *filename,*/
py_funcname, /*PyObject *name,*/
py_line,
__pyx_empty_bytes /*PyObject *lnotab*/
);
Py_DECREF(py_srcfile);
#else
py_code = PyCode_NewEmpty(filename, funcname, py_line);
#endif
Py_XDECREF(py_funcname); // XDECREF since it's only set on Py3 if cline
return py_code;
bad:
Py_XDECREF(py_funcname);
#if PY_MAJOR_VERSION < 3
Py_XDECREF(py_srcfile);
#endif
return NULL;
}
static void __Pyx_AddTraceback(const char *funcname, int c_line,
int py_line, const char *filename) {
PyCodeObject *py_code = 0;
PyFrameObject *py_frame = 0;
PyThreadState *tstate = __Pyx_PyThreadState_Current;
if (c_line) {
c_line = __Pyx_CLineForTraceback(tstate, c_line);
}
py_code = __pyx_find_code_object(c_line ? -c_line : py_line);
if (!py_code) {
py_code = __Pyx_CreateCodeObjectForTraceback(
funcname, c_line, py_line, filename);
if (!py_code) goto bad;
__pyx_insert_code_object(c_line ? -c_line : py_line, py_code);
}
py_frame = PyFrame_New(
tstate, /*PyThreadState *tstate,*/
py_code, /*PyCodeObject *code,*/
__pyx_d, /*PyObject *globals,*/
0 /*PyObject *locals*/
);
if (!py_frame) goto bad;
__Pyx_PyFrame_SetLineNumber(py_frame, py_line);
PyTraceBack_Here(py_frame);
bad:
Py_XDECREF(py_code);
Py_XDECREF(py_frame);
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_uint16_t(uint16_t value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const uint16_t neg_one = (uint16_t) -1, const_zero = (uint16_t) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(uint16_t) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(uint16_t) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(uint16_t) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(uint16_t) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(uint16_t) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(uint16_t),
little, !is_unsigned);
}
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const long neg_one = (long) -1, const_zero = (long) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(long) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(long) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(long) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(long),
little, !is_unsigned);
}
}
/* CIntFromPyVerify */
#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value)\
__PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 0)
#define __PYX_VERIFY_RETURN_INT_EXC(target_type, func_type, func_value)\
__PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 1)
#define __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, exc)\
{\
func_type value = func_value;\
if (sizeof(target_type) < sizeof(func_type)) {\
if (unlikely(value != (func_type) (target_type) value)) {\
func_type zero = 0;\
if (exc && unlikely(value == (func_type)-1 && PyErr_Occurred()))\
return (target_type) -1;\
if (is_unsigned && unlikely(value < zero))\
goto raise_neg_overflow;\
else\
goto raise_overflow;\
}\
}\
return (target_type) value;\
}
/* CIntFromPy */
static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const long neg_one = (long) -1, const_zero = (long) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
if (likely(PyInt_Check(x))) {
if (sizeof(long) < sizeof(long)) {
__PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x))
} else {
long val = PyInt_AS_LONG(x);
if (is_unsigned && unlikely(val < 0)) {
goto raise_neg_overflow;
}
return (long) val;
}
} else
#endif
if (likely(PyLong_Check(x))) {
if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (long) 0;
case 1: __PYX_VERIFY_RETURN_INT(long, digit, digits[0])
case 2:
if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) >= 2 * PyLong_SHIFT) {
return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
}
}
break;
case 3:
if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) >= 3 * PyLong_SHIFT) {
return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
}
}
break;
case 4:
if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) >= 4 * PyLong_SHIFT) {
return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
}
}
break;
}
#endif
#if CYTHON_COMPILING_IN_CPYTHON
if (unlikely(Py_SIZE(x) < 0)) {
goto raise_neg_overflow;
}
#else
{
int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
if (unlikely(result < 0))
return (long) -1;
if (unlikely(result == 1))
goto raise_neg_overflow;
}
#endif
if (sizeof(long) <= sizeof(unsigned long)) {
__PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
}
} else {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (long) 0;
case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, (sdigit) (-(sdigit)digits[0]))
case 1: __PYX_VERIFY_RETURN_INT(long, digit, +digits[0])
case -2:
if (8 * sizeof(long) - 1 > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case 2:
if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case -3:
if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case 3:
if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case -4:
if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case 4:
if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
}
#endif
if (sizeof(long) <= sizeof(long)) {
__PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
}
}
{
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
PyErr_SetString(PyExc_RuntimeError,
"_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
long val;
PyObject *v = __Pyx_PyNumber_IntOrLong(x);
#if PY_MAJOR_VERSION < 3
if (likely(v) && !PyLong_Check(v)) {
PyObject *tmp = v;
v = PyNumber_Long(tmp);
Py_DECREF(tmp);
}
#endif
if (likely(v)) {
int one = 1; int is_little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&val;
int ret = _PyLong_AsByteArray((PyLongObject *)v,
bytes, sizeof(val),
is_little, !is_unsigned);
Py_DECREF(v);
if (likely(!ret))
return val;
}
#endif
return (long) -1;
}
} else {
long val;
PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
if (!tmp) return (long) -1;
val = __Pyx_PyInt_As_long(tmp);
Py_DECREF(tmp);
return val;
}
raise_overflow:
PyErr_SetString(PyExc_OverflowError,
"value too large to convert to long");
return (long) -1;
raise_neg_overflow:
PyErr_SetString(PyExc_OverflowError,
"can't convert negative value to long");
return (long) -1;
}
/* CIntFromPy */
static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const int neg_one = (int) -1, const_zero = (int) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
if (likely(PyInt_Check(x))) {
if (sizeof(int) < sizeof(long)) {
__PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x))
} else {
long val = PyInt_AS_LONG(x);
if (is_unsigned && unlikely(val < 0)) {
goto raise_neg_overflow;
}
return (int) val;
}
} else
#endif
if (likely(PyLong_Check(x))) {
if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (int) 0;
case 1: __PYX_VERIFY_RETURN_INT(int, digit, digits[0])
case 2:
if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) >= 2 * PyLong_SHIFT) {
return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
}
}
break;
case 3:
if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) >= 3 * PyLong_SHIFT) {
return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
}
}
break;
case 4:
if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) >= 4 * PyLong_SHIFT) {
return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
}
}
break;
}
#endif
#if CYTHON_COMPILING_IN_CPYTHON
if (unlikely(Py_SIZE(x) < 0)) {
goto raise_neg_overflow;
}
#else
{
int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
if (unlikely(result < 0))
return (int) -1;
if (unlikely(result == 1))
goto raise_neg_overflow;
}
#endif
if (sizeof(int) <= sizeof(unsigned long)) {
__PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
}
} else {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (int) 0;
case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, (sdigit) (-(sdigit)digits[0]))
case 1: __PYX_VERIFY_RETURN_INT(int, digit, +digits[0])
case -2:
if (8 * sizeof(int) - 1 > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case 2:
if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case -3:
if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case 3:
if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case -4:
if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case 4:
if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
}
#endif
if (sizeof(int) <= sizeof(long)) {
__PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
}
}
{
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
PyErr_SetString(PyExc_RuntimeError,
"_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
int val;
PyObject *v = __Pyx_PyNumber_IntOrLong(x);
#if PY_MAJOR_VERSION < 3
if (likely(v) && !PyLong_Check(v)) {
PyObject *tmp = v;
v = PyNumber_Long(tmp);
Py_DECREF(tmp);
}
#endif
if (likely(v)) {
int one = 1; int is_little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&val;
int ret = _PyLong_AsByteArray((PyLongObject *)v,
bytes, sizeof(val),
is_little, !is_unsigned);
Py_DECREF(v);
if (likely(!ret))
return val;
}
#endif
return (int) -1;
}
} else {
int val;
PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
if (!tmp) return (int) -1;
val = __Pyx_PyInt_As_int(tmp);
Py_DECREF(tmp);
return val;
}
raise_overflow:
PyErr_SetString(PyExc_OverflowError,
"value too large to convert to int");
return (int) -1;
raise_neg_overflow:
PyErr_SetString(PyExc_OverflowError,
"can't convert negative value to int");
return (int) -1;
}
/* FastTypeChecks */
#if CYTHON_COMPILING_IN_CPYTHON
static int __Pyx_InBases(PyTypeObject *a, PyTypeObject *b) {
while (a) {
a = a->tp_base;
if (a == b)
return 1;
}
return b == &PyBaseObject_Type;
}
static CYTHON_INLINE int __Pyx_IsSubtype(PyTypeObject *a, PyTypeObject *b) {
PyObject *mro;
if (a == b) return 1;
mro = a->tp_mro;
if (likely(mro)) {
Py_ssize_t i, n;
n = PyTuple_GET_SIZE(mro);
for (i = 0; i < n; i++) {
if (PyTuple_GET_ITEM(mro, i) == (PyObject *)b)
return 1;
}
return 0;
}
return __Pyx_InBases(a, b);
}
#if PY_MAJOR_VERSION == 2
static int __Pyx_inner_PyErr_GivenExceptionMatches2(PyObject *err, PyObject* exc_type1, PyObject* exc_type2) {
PyObject *exception, *value, *tb;
int res;
__Pyx_PyThreadState_declare
__Pyx_PyThreadState_assign
__Pyx_ErrFetch(&exception, &value, &tb);
res = exc_type1 ? PyObject_IsSubclass(err, exc_type1) : 0;
if (unlikely(res == -1)) {
PyErr_WriteUnraisable(err);
res = 0;
}
if (!res) {
res = PyObject_IsSubclass(err, exc_type2);
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| 236,857 | C | 38.26691 | 356 | 0.595532 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/httptools/parser/__init__.py | from .parser import * # NoQA
from .errors import * # NoQA
from .url_parser import * # NoQA
__all__ = parser.__all__ + errors.__all__ + url_parser.__all__ # NoQA
| 166 | Python | 26.833329 | 70 | 0.60241 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/httptools/parser/errors.py | __all__ = ('HttpParserError',
'HttpParserCallbackError',
'HttpParserInvalidStatusError',
'HttpParserInvalidMethodError',
'HttpParserInvalidURLError',
'HttpParserUpgrade')
class HttpParserError(Exception):
pass
class HttpParserCallbackError(HttpParserError):
pass
class HttpParserInvalidStatusError(HttpParserError):
pass
class HttpParserInvalidMethodError(HttpParserError):
pass
class HttpParserInvalidURLError(HttpParserError):
pass
class HttpParserUpgrade(Exception):
pass
| 566 | Python | 17.290322 | 52 | 0.719081 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/httptools/parser/parser.c | /* Generated by Cython 0.29.28 */
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# if defined(__GNUC__)
# if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
# define CYTHON_UNUSED __attribute__ ((__unused__))
# else
# define CYTHON_UNUSED
# endif
# elif defined(__ICC) || (defined(__INTEL_COMPILER) && !defined(_MSC_VER))
# define CYTHON_UNUSED __attribute__ ((__unused__))
# else
# define CYTHON_UNUSED
# endif
#endif
#ifndef CYTHON_MAYBE_UNUSED_VAR
# if defined(__cplusplus)
template<class T> void CYTHON_MAYBE_UNUSED_VAR( const T& ) { }
# else
# define CYTHON_MAYBE_UNUSED_VAR(x) (void)(x)
# endif
#endif
#ifndef CYTHON_NCP_UNUSED
# if CYTHON_COMPILING_IN_CPYTHON
# define CYTHON_NCP_UNUSED
# else
# define CYTHON_NCP_UNUSED CYTHON_UNUSED
# endif
#endif
#define __Pyx_void_to_None(void_result) ((void)(void_result), Py_INCREF(Py_None), Py_None)
#ifdef _MSC_VER
#ifndef _MSC_STDINT_H_
#if _MSC_VER < 1300
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
#else
typedef unsigned __int8 uint8_t;
typedef unsigned __int32 uint32_t;
#endif
#endif
#else
#include <stdint.h>
#endif
#ifndef CYTHON_FALLTHROUGH
#if defined(__cplusplus) && __cplusplus >= 201103L
#if __has_cpp_attribute(fallthrough)
#define CYTHON_FALLTHROUGH [[fallthrough]]
#elif __has_cpp_attribute(clang::fallthrough)
#define CYTHON_FALLTHROUGH [[clang::fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
#define CYTHON_FALLTHROUGH [[gnu::fallthrough]]
#endif
#endif
#ifndef CYTHON_FALLTHROUGH
#if __has_attribute(fallthrough)
#define CYTHON_FALLTHROUGH __attribute__((fallthrough))
#else
#define CYTHON_FALLTHROUGH
#endif
#endif
#if defined(__clang__ ) && defined(__apple_build_version__)
#if __apple_build_version__ < 7000000
#undef CYTHON_FALLTHROUGH
#define CYTHON_FALLTHROUGH
#endif
#endif
#endif
#ifndef CYTHON_INLINE
#if defined(__clang__)
#define CYTHON_INLINE __inline__ __attribute__ ((__unused__))
#elif defined(__GNUC__)
#define CYTHON_INLINE __inline__
#elif defined(_MSC_VER)
#define CYTHON_INLINE __inline
#elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define CYTHON_INLINE inline
#else
#define CYTHON_INLINE
#endif
#endif
#if CYTHON_COMPILING_IN_PYPY && PY_VERSION_HEX < 0x02070600 && !defined(Py_OptimizeFlag)
#define Py_OptimizeFlag 0
#endif
#define __PYX_BUILD_PY_SSIZE_T "n"
#define CYTHON_FORMAT_SSIZE_T "z"
#if PY_MAJOR_VERSION < 3
#define __Pyx_BUILTIN_MODULE_NAME "__builtin__"
#define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
PyCode_New(a+k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
#define __Pyx_DefaultClassType PyClass_Type
#else
#define __Pyx_BUILTIN_MODULE_NAME "builtins"
#define __Pyx_DefaultClassType PyType_Type
#if PY_VERSION_HEX >= 0x030B00A1
static CYTHON_INLINE PyCodeObject* __Pyx_PyCode_New(int a, int k, int l, int s, int f,
PyObject *code, PyObject *c, PyObject* n, PyObject *v,
PyObject *fv, PyObject *cell, PyObject* fn,
PyObject *name, int fline, PyObject *lnos) {
PyObject *kwds=NULL, *argcount=NULL, *posonlyargcount=NULL, *kwonlyargcount=NULL;
PyObject *nlocals=NULL, *stacksize=NULL, *flags=NULL, *replace=NULL, *call_result=NULL, *empty=NULL;
const char *fn_cstr=NULL;
const char *name_cstr=NULL;
PyCodeObject* co=NULL;
PyObject *type, *value, *traceback;
PyErr_Fetch(&type, &value, &traceback);
if (!(kwds=PyDict_New())) goto end;
if (!(argcount=PyLong_FromLong(a))) goto end;
if (PyDict_SetItemString(kwds, "co_argcount", argcount) != 0) goto end;
if (!(posonlyargcount=PyLong_FromLong(0))) goto end;
if (PyDict_SetItemString(kwds, "co_posonlyargcount", posonlyargcount) != 0) goto end;
if (!(kwonlyargcount=PyLong_FromLong(k))) goto end;
if (PyDict_SetItemString(kwds, "co_kwonlyargcount", kwonlyargcount) != 0) goto end;
if (!(nlocals=PyLong_FromLong(l))) goto end;
if (PyDict_SetItemString(kwds, "co_nlocals", nlocals) != 0) goto end;
if (!(stacksize=PyLong_FromLong(s))) goto end;
if (PyDict_SetItemString(kwds, "co_stacksize", stacksize) != 0) goto end;
if (!(flags=PyLong_FromLong(f))) goto end;
if (PyDict_SetItemString(kwds, "co_flags", flags) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_code", code) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_consts", c) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_names", n) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_varnames", v) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_freevars", fv) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_cellvars", cell) != 0) goto end;
if (PyDict_SetItemString(kwds, "co_linetable", lnos) != 0) goto end;
if (!(fn_cstr=PyUnicode_AsUTF8AndSize(fn, NULL))) goto end;
if (!(name_cstr=PyUnicode_AsUTF8AndSize(name, NULL))) goto end;
if (!(co = PyCode_NewEmpty(fn_cstr, name_cstr, fline))) goto end;
if (!(replace = PyObject_GetAttrString((PyObject*)co, "replace"))) goto cleanup_code_too;
if (!(empty = PyTuple_New(0))) goto cleanup_code_too; // unfortunately __pyx_empty_tuple isn't available here
if (!(call_result = PyObject_Call(replace, empty, kwds))) goto cleanup_code_too;
Py_XDECREF((PyObject*)co);
co = (PyCodeObject*)call_result;
call_result = NULL;
if (0) {
cleanup_code_too:
Py_XDECREF((PyObject*)co);
co = NULL;
}
end:
Py_XDECREF(kwds);
Py_XDECREF(argcount);
Py_XDECREF(posonlyargcount);
Py_XDECREF(kwonlyargcount);
Py_XDECREF(nlocals);
Py_XDECREF(stacksize);
Py_XDECREF(replace);
Py_XDECREF(call_result);
Py_XDECREF(empty);
if (type) {
PyErr_Restore(type, value, traceback);
}
return co;
}
#else
#define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)\
PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
#endif
#define __Pyx_DefaultClassType PyType_Type
#endif
#ifndef Py_TPFLAGS_CHECKTYPES
#define Py_TPFLAGS_CHECKTYPES 0
#endif
#ifndef Py_TPFLAGS_HAVE_INDEX
#define Py_TPFLAGS_HAVE_INDEX 0
#endif
#ifndef Py_TPFLAGS_HAVE_NEWBUFFER
#define Py_TPFLAGS_HAVE_NEWBUFFER 0
#endif
#ifndef Py_TPFLAGS_HAVE_FINALIZE
#define Py_TPFLAGS_HAVE_FINALIZE 0
#endif
#ifndef METH_STACKLESS
#define METH_STACKLESS 0
#endif
#if PY_VERSION_HEX <= 0x030700A3 || !defined(METH_FASTCALL)
#ifndef METH_FASTCALL
#define METH_FASTCALL 0x80
#endif
typedef PyObject *(*__Pyx_PyCFunctionFast) (PyObject *self, PyObject *const *args, Py_ssize_t nargs);
typedef PyObject *(*__Pyx_PyCFunctionFastWithKeywords) (PyObject *self, PyObject *const *args,
Py_ssize_t nargs, PyObject *kwnames);
#else
#define __Pyx_PyCFunctionFast _PyCFunctionFast
#define __Pyx_PyCFunctionFastWithKeywords _PyCFunctionFastWithKeywords
#endif
#if CYTHON_FAST_PYCCALL
#define __Pyx_PyFastCFunction_Check(func)\
((PyCFunction_Check(func) && (METH_FASTCALL == (PyCFunction_GET_FLAGS(func) & ~(METH_CLASS | METH_STATIC | METH_COEXIST | METH_KEYWORDS | METH_STACKLESS)))))
#else
#define __Pyx_PyFastCFunction_Check(func) 0
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Malloc)
#define PyObject_Malloc(s) PyMem_Malloc(s)
#define PyObject_Free(p) PyMem_Free(p)
#define PyObject_Realloc(p) PyMem_Realloc(p)
#endif
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX < 0x030400A1
#define PyMem_RawMalloc(n) PyMem_Malloc(n)
#define PyMem_RawRealloc(p, n) PyMem_Realloc(p, n)
#define PyMem_RawFree(p) PyMem_Free(p)
#endif
#if CYTHON_COMPILING_IN_PYSTON
#define __Pyx_PyCode_HasFreeVars(co) PyCode_HasFreeVars(co)
#define __Pyx_PyFrame_SetLineNumber(frame, lineno) PyFrame_SetLineNumber(frame, lineno)
#else
#define __Pyx_PyCode_HasFreeVars(co) (PyCode_GetNumFree(co) > 0)
#define __Pyx_PyFrame_SetLineNumber(frame, lineno) (frame)->f_lineno = (lineno)
#endif
#if !CYTHON_FAST_THREAD_STATE || PY_VERSION_HEX < 0x02070000
#define __Pyx_PyThreadState_Current PyThreadState_GET()
#elif PY_VERSION_HEX >= 0x03060000
#define __Pyx_PyThreadState_Current _PyThreadState_UncheckedGet()
#elif PY_VERSION_HEX >= 0x03000000
#define __Pyx_PyThreadState_Current PyThreadState_GET()
#else
#define __Pyx_PyThreadState_Current _PyThreadState_Current
#endif
#if PY_VERSION_HEX < 0x030700A2 && !defined(PyThread_tss_create) && !defined(Py_tss_NEEDS_INIT)
#include "pythread.h"
#define Py_tss_NEEDS_INIT 0
typedef int Py_tss_t;
static CYTHON_INLINE int PyThread_tss_create(Py_tss_t *key) {
*key = PyThread_create_key();
return 0;
}
static CYTHON_INLINE Py_tss_t * PyThread_tss_alloc(void) {
Py_tss_t *key = (Py_tss_t *)PyObject_Malloc(sizeof(Py_tss_t));
*key = Py_tss_NEEDS_INIT;
return key;
}
static CYTHON_INLINE void PyThread_tss_free(Py_tss_t *key) {
PyObject_Free(key);
}
static CYTHON_INLINE int PyThread_tss_is_created(Py_tss_t *key) {
return *key != Py_tss_NEEDS_INIT;
}
static CYTHON_INLINE void PyThread_tss_delete(Py_tss_t *key) {
PyThread_delete_key(*key);
*key = Py_tss_NEEDS_INIT;
}
static CYTHON_INLINE int PyThread_tss_set(Py_tss_t *key, void *value) {
return PyThread_set_key_value(*key, value);
}
static CYTHON_INLINE void * PyThread_tss_get(Py_tss_t *key) {
return PyThread_get_key_value(*key);
}
#endif
#if CYTHON_COMPILING_IN_CPYTHON || defined(_PyDict_NewPresized)
#define __Pyx_PyDict_NewPresized(n) ((n <= 8) ? PyDict_New() : _PyDict_NewPresized(n))
#else
#define __Pyx_PyDict_NewPresized(n) PyDict_New()
#endif
#if PY_MAJOR_VERSION >= 3 || CYTHON_FUTURE_DIVISION
#define __Pyx_PyNumber_Divide(x,y) PyNumber_TrueDivide(x,y)
#define __Pyx_PyNumber_InPlaceDivide(x,y) PyNumber_InPlaceTrueDivide(x,y)
#else
#define __Pyx_PyNumber_Divide(x,y) PyNumber_Divide(x,y)
#define __Pyx_PyNumber_InPlaceDivide(x,y) PyNumber_InPlaceDivide(x,y)
#endif
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x030500A1 && CYTHON_USE_UNICODE_INTERNALS
#define __Pyx_PyDict_GetItemStr(dict, name) _PyDict_GetItem_KnownHash(dict, name, ((PyASCIIObject *) name)->hash)
#else
#define __Pyx_PyDict_GetItemStr(dict, name) PyDict_GetItem(dict, name)
#endif
#if PY_VERSION_HEX > 0x03030000 && defined(PyUnicode_KIND)
#define CYTHON_PEP393_ENABLED 1
#if defined(PyUnicode_IS_READY)
#define __Pyx_PyUnicode_READY(op) (likely(PyUnicode_IS_READY(op)) ?\
0 : _PyUnicode_Ready((PyObject *)(op)))
#else
#define __Pyx_PyUnicode_READY(op) (0)
#endif
#define __Pyx_PyUnicode_GET_LENGTH(u) PyUnicode_GET_LENGTH(u)
#define __Pyx_PyUnicode_READ_CHAR(u, i) PyUnicode_READ_CHAR(u, i)
#define __Pyx_PyUnicode_MAX_CHAR_VALUE(u) PyUnicode_MAX_CHAR_VALUE(u)
#define __Pyx_PyUnicode_KIND(u) PyUnicode_KIND(u)
#define __Pyx_PyUnicode_DATA(u) PyUnicode_DATA(u)
#define __Pyx_PyUnicode_READ(k, d, i) PyUnicode_READ(k, d, i)
#define __Pyx_PyUnicode_WRITE(k, d, i, ch) PyUnicode_WRITE(k, d, i, ch)
#if defined(PyUnicode_IS_READY) && defined(PyUnicode_GET_SIZE)
#if CYTHON_COMPILING_IN_CPYTHON && PY_VERSION_HEX >= 0x03090000
#define __Pyx_PyUnicode_IS_TRUE(u) (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : ((PyCompactUnicodeObject *)(u))->wstr_length))
#else
#define __Pyx_PyUnicode_IS_TRUE(u) (0 != (likely(PyUnicode_IS_READY(u)) ? PyUnicode_GET_LENGTH(u) : PyUnicode_GET_SIZE(u)))
#endif
#else
#define __Pyx_PyUnicode_IS_TRUE(u) (0 != PyUnicode_GET_LENGTH(u))
#endif
#else
#define CYTHON_PEP393_ENABLED 0
#define PyUnicode_1BYTE_KIND 1
#define PyUnicode_2BYTE_KIND 2
#define PyUnicode_4BYTE_KIND 4
#define __Pyx_PyUnicode_READY(op) (0)
#define __Pyx_PyUnicode_GET_LENGTH(u) PyUnicode_GET_SIZE(u)
#define __Pyx_PyUnicode_READ_CHAR(u, i) ((Py_UCS4)(PyUnicode_AS_UNICODE(u)[i]))
#define __Pyx_PyUnicode_MAX_CHAR_VALUE(u) ((sizeof(Py_UNICODE) == 2) ? 65535 : 1114111)
#define __Pyx_PyUnicode_KIND(u) (sizeof(Py_UNICODE))
#define __Pyx_PyUnicode_DATA(u) ((void*)PyUnicode_AS_UNICODE(u))
#define __Pyx_PyUnicode_READ(k, d, i) ((void)(k), (Py_UCS4)(((Py_UNICODE*)d)[i]))
#define __Pyx_PyUnicode_WRITE(k, d, i, ch) (((void)(k)), ((Py_UNICODE*)d)[i] = ch)
#define __Pyx_PyUnicode_IS_TRUE(u) (0 != PyUnicode_GET_SIZE(u))
#endif
#if CYTHON_COMPILING_IN_PYPY
#define __Pyx_PyUnicode_Concat(a, b) PyNumber_Add(a, b)
#define __Pyx_PyUnicode_ConcatSafe(a, b) PyNumber_Add(a, b)
#else
#define __Pyx_PyUnicode_Concat(a, b) PyUnicode_Concat(a, b)
#define __Pyx_PyUnicode_ConcatSafe(a, b) ((unlikely((a) == Py_None) || unlikely((b) == Py_None)) ?\
PyNumber_Add(a, b) : __Pyx_PyUnicode_Concat(a, b))
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyUnicode_Contains)
#define PyUnicode_Contains(u, s) PySequence_Contains(u, s)
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyByteArray_Check)
#define PyByteArray_Check(obj) PyObject_TypeCheck(obj, &PyByteArray_Type)
#endif
#if CYTHON_COMPILING_IN_PYPY && !defined(PyObject_Format)
#define PyObject_Format(obj, fmt) PyObject_CallMethod(obj, "__format__", "O", fmt)
#endif
#define __Pyx_PyString_FormatSafe(a, b) ((unlikely((a) == Py_None || (PyString_Check(b) && !PyString_CheckExact(b)))) ? PyNumber_Remainder(a, b) : __Pyx_PyString_Format(a, b))
#define __Pyx_PyUnicode_FormatSafe(a, b) ((unlikely((a) == Py_None || (PyUnicode_Check(b) && !PyUnicode_CheckExact(b)))) ? PyNumber_Remainder(a, b) : PyUnicode_Format(a, b))
#if PY_MAJOR_VERSION >= 3
#define __Pyx_PyString_Format(a, b) PyUnicode_Format(a, b)
#else
#define __Pyx_PyString_Format(a, b) PyString_Format(a, b)
#endif
#if PY_MAJOR_VERSION < 3 && !defined(PyObject_ASCII)
#define PyObject_ASCII(o) PyObject_Repr(o)
#endif
#if PY_MAJOR_VERSION >= 3
#define PyBaseString_Type PyUnicode_Type
#define PyStringObject PyUnicodeObject
#define PyString_Type PyUnicode_Type
#define PyString_Check PyUnicode_Check
#define PyString_CheckExact PyUnicode_CheckExact
#ifndef PyObject_Unicode
#define PyObject_Unicode PyObject_Str
#endif
#endif
#if PY_MAJOR_VERSION >= 3
#define __Pyx_PyBaseString_Check(obj) PyUnicode_Check(obj)
#define __Pyx_PyBaseString_CheckExact(obj) PyUnicode_CheckExact(obj)
#else
#define __Pyx_PyBaseString_Check(obj) (PyString_Check(obj) || PyUnicode_Check(obj))
#define __Pyx_PyBaseString_CheckExact(obj) (PyString_CheckExact(obj) || PyUnicode_CheckExact(obj))
#endif
#ifndef PySet_CheckExact
#define PySet_CheckExact(obj) (Py_TYPE(obj) == &PySet_Type)
#endif
#if PY_VERSION_HEX >= 0x030900A4
#define __Pyx_SET_REFCNT(obj, refcnt) Py_SET_REFCNT(obj, refcnt)
#define __Pyx_SET_SIZE(obj, size) Py_SET_SIZE(obj, size)
#else
#define __Pyx_SET_REFCNT(obj, refcnt) Py_REFCNT(obj) = (refcnt)
#define __Pyx_SET_SIZE(obj, size) Py_SIZE(obj) = (size)
#endif
#if CYTHON_ASSUME_SAFE_MACROS
#define __Pyx_PySequence_SIZE(seq) Py_SIZE(seq)
#else
#define __Pyx_PySequence_SIZE(seq) PySequence_Size(seq)
#endif
#if PY_MAJOR_VERSION >= 3
#define PyIntObject PyLongObject
#define PyInt_Type PyLong_Type
#define PyInt_Check(op) PyLong_Check(op)
#define PyInt_CheckExact(op) PyLong_CheckExact(op)
#define PyInt_FromString PyLong_FromString
#define PyInt_FromUnicode PyLong_FromUnicode
#define PyInt_FromLong PyLong_FromLong
#define PyInt_FromSize_t PyLong_FromSize_t
#define PyInt_FromSsize_t PyLong_FromSsize_t
#define PyInt_AsLong PyLong_AsLong
#define PyInt_AS_LONG PyLong_AS_LONG
#define PyInt_AsSsize_t PyLong_AsSsize_t
#define PyInt_AsUnsignedLongMask PyLong_AsUnsignedLongMask
#define PyInt_AsUnsignedLongLongMask PyLong_AsUnsignedLongLongMask
#define PyNumber_Int PyNumber_Long
#endif
#if PY_MAJOR_VERSION >= 3
#define PyBoolObject PyLongObject
#endif
#if PY_MAJOR_VERSION >= 3 && CYTHON_COMPILING_IN_PYPY
#ifndef PyUnicode_InternFromString
#define PyUnicode_InternFromString(s) PyUnicode_FromString(s)
#endif
#endif
#if PY_VERSION_HEX < 0x030200A4
typedef long Py_hash_t;
#define __Pyx_PyInt_FromHash_t PyInt_FromLong
#define __Pyx_PyInt_AsHash_t __Pyx_PyIndex_AsHash_t
#else
#define __Pyx_PyInt_FromHash_t PyInt_FromSsize_t
#define __Pyx_PyInt_AsHash_t __Pyx_PyIndex_AsSsize_t
#endif
#if PY_MAJOR_VERSION >= 3
#define __Pyx_PyMethod_New(func, self, klass) ((self) ? ((void)(klass), PyMethod_New(func, self)) : __Pyx_NewRef(func))
#else
#define __Pyx_PyMethod_New(func, self, klass) PyMethod_New(func, self, klass)
#endif
#if CYTHON_USE_ASYNC_SLOTS
#if PY_VERSION_HEX >= 0x030500B1
#define __Pyx_PyAsyncMethodsStruct PyAsyncMethods
#define __Pyx_PyType_AsAsync(obj) (Py_TYPE(obj)->tp_as_async)
#else
#define __Pyx_PyType_AsAsync(obj) ((__Pyx_PyAsyncMethodsStruct*) (Py_TYPE(obj)->tp_reserved))
#endif
#else
#define __Pyx_PyType_AsAsync(obj) NULL
#endif
#ifndef __Pyx_PyAsyncMethodsStruct
typedef struct {
unaryfunc am_await;
unaryfunc am_aiter;
unaryfunc am_anext;
} __Pyx_PyAsyncMethodsStruct;
#endif
#if defined(WIN32) || defined(MS_WINDOWS)
#define _USE_MATH_DEFINES
#endif
#include <math.h>
#ifdef NAN
#define __PYX_NAN() ((float) NAN)
#else
static CYTHON_INLINE float __PYX_NAN() {
float value;
memset(&value, 0xFF, sizeof(value));
return value;
}
#endif
#if defined(__CYGWIN__) && defined(_LDBL_EQ_DBL)
#define __Pyx_truncl trunc
#else
#define __Pyx_truncl truncl
#endif
#define __PYX_MARK_ERR_POS(f_index, lineno) \
{ __pyx_filename = __pyx_f[f_index]; (void)__pyx_filename; __pyx_lineno = lineno; (void)__pyx_lineno; __pyx_clineno = __LINE__; (void)__pyx_clineno; }
#define __PYX_ERR(f_index, lineno, Ln_error) \
{ __PYX_MARK_ERR_POS(f_index, lineno) goto Ln_error; }
#ifndef __PYX_EXTERN_C
#ifdef __cplusplus
#define __PYX_EXTERN_C extern "C"
#else
#define __PYX_EXTERN_C extern
#endif
#endif
#define __PYX_HAVE__httptools__parser__parser
#define __PYX_HAVE_API__httptools__parser__parser
/* Early includes */
#include <string.h>
#include <stdio.h>
#include "pythread.h"
#include <stdint.h>
#include "llhttp.h"
#ifdef _OPENMP
#include <omp.h>
#endif /* _OPENMP */
#if defined(PYREX_WITHOUT_ASSERTIONS) && !defined(CYTHON_WITHOUT_ASSERTIONS)
#define CYTHON_WITHOUT_ASSERTIONS
#endif
typedef struct {PyObject **p; const char *s; const Py_ssize_t n; const char* encoding;
const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry;
#define __PYX_DEFAULT_STRING_ENCODING_IS_ASCII 0
#define __PYX_DEFAULT_STRING_ENCODING_IS_UTF8 0
#define __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT (PY_MAJOR_VERSION >= 3 && __PYX_DEFAULT_STRING_ENCODING_IS_UTF8)
#define __PYX_DEFAULT_STRING_ENCODING ""
#define __Pyx_PyObject_FromString __Pyx_PyBytes_FromString
#define __Pyx_PyObject_FromStringAndSize __Pyx_PyBytes_FromStringAndSize
#define __Pyx_uchar_cast(c) ((unsigned char)c)
#define __Pyx_long_cast(x) ((long)x)
#define __Pyx_fits_Py_ssize_t(v, type, is_signed) (\
(sizeof(type) < sizeof(Py_ssize_t)) ||\
(sizeof(type) > sizeof(Py_ssize_t) &&\
likely(v < (type)PY_SSIZE_T_MAX ||\
v == (type)PY_SSIZE_T_MAX) &&\
(!is_signed || likely(v > (type)PY_SSIZE_T_MIN ||\
v == (type)PY_SSIZE_T_MIN))) ||\
(sizeof(type) == sizeof(Py_ssize_t) &&\
(is_signed || likely(v < (type)PY_SSIZE_T_MAX ||\
v == (type)PY_SSIZE_T_MAX))) )
static CYTHON_INLINE int __Pyx_is_valid_index(Py_ssize_t i, Py_ssize_t limit) {
return (size_t) i < (size_t) limit;
}
#if defined (__cplusplus) && __cplusplus >= 201103L
#include <cstdlib>
#define __Pyx_sst_abs(value) std::abs(value)
#elif SIZEOF_INT >= SIZEOF_SIZE_T
#define __Pyx_sst_abs(value) abs(value)
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Py_DECREF(sys);
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goto bad;
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struct __pyx_obj_9httptools_6parser_6parser_HttpParser;
struct __pyx_obj_9httptools_6parser_6parser_HttpRequestParser;
struct __pyx_obj_9httptools_6parser_6parser_HttpResponseParser;
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struct __pyx_obj_9httptools_6parser_6parser_HttpParser {
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struct __pyx_obj_9httptools_6parser_6parser_HttpResponseParser {
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struct __pyx_vtabstruct_9httptools_6parser_6parser_HttpRequestParser {
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static struct __pyx_vtabstruct_9httptools_6parser_6parser_HttpRequestParser *__pyx_vtabptr_9httptools_6parser_6parser_HttpRequestParser;
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struct __pyx_vtabstruct_9httptools_6parser_6parser_HttpResponseParser {
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static struct __pyx_vtabstruct_9httptools_6parser_6parser_HttpResponseParser *__pyx_vtabptr_9httptools_6parser_6parser_HttpResponseParser;
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static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__init(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self, PyObject *__pyx_v_protocol, llhttp_type_t __pyx_v_mode); /* proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__maybe_call_on_header(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__on_header_field(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self, PyObject *__pyx_v_field); /* proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__on_header_value(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self, PyObject *__pyx_v_val); /* proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__on_headers_complete(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__on_chunk_header(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_10HttpParser__on_chunk_complete(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto*/
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/* Module declarations from 'httptools.parser.parser' */
static PyTypeObject *__pyx_ptype_9httptools_6parser_6parser_HttpParser = 0;
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static PyTypeObject *__pyx_ptype_9httptools_6parser_6parser_HttpResponseParser = 0;
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static int __pyx_f_9httptools_6parser_6parser_cb_on_status(llhttp_t *, char const *, size_t); /*proto*/
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static int __pyx_f_9httptools_6parser_6parser_cb_on_headers_complete(llhttp_t *); /*proto*/
static int __pyx_f_9httptools_6parser_6parser_cb_on_body(llhttp_t *, char const *, size_t); /*proto*/
static int __pyx_f_9httptools_6parser_6parser_cb_on_message_complete(llhttp_t *); /*proto*/
static int __pyx_f_9httptools_6parser_6parser_cb_on_chunk_header(llhttp_t *); /*proto*/
static int __pyx_f_9httptools_6parser_6parser_cb_on_chunk_complete(llhttp_t *); /*proto*/
static PyObject *__pyx_f_9httptools_6parser_6parser_parser_error_from_errno(llhttp_t *, llhttp_errno_t); /*proto*/
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static const char __pyx_k_main[] = "__main__";
static const char __pyx_k_name[] = "__name__";
static const char __pyx_k_test[] = "__test__";
static const char __pyx_k_errors[] = "errors";
static const char __pyx_k_format[] = "format";
static const char __pyx_k_import[] = "__import__";
static const char __pyx_k_on_url[] = "on_url";
static const char __pyx_k_reduce[] = "__reduce__";
static const char __pyx_k_context[] = "__context__";
static const char __pyx_k_on_body[] = "on_body";
static const char __pyx_k_getstate[] = "__getstate__";
static const char __pyx_k_protocol[] = "protocol";
static const char __pyx_k_setstate[] = "__setstate__";
static const char __pyx_k_TypeError[] = "TypeError";
static const char __pyx_k_on_header[] = "on_header";
static const char __pyx_k_on_status[] = "on_status";
static const char __pyx_k_reduce_ex[] = "__reduce_ex__";
static const char __pyx_k_pyx_vtable[] = "__pyx_vtable__";
static const char __pyx_k_MemoryError[] = "MemoryError";
static const char __pyx_k_BaseException[] = "BaseException";
static const char __pyx_k_reduce_cython[] = "__reduce_cython__";
static const char __pyx_k_HttpParserError[] = "HttpParserError";
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static const char __pyx_k_setstate_cython[] = "__setstate_cython__";
static const char __pyx_k_on_message_begin[] = "on_message_begin";
static const char __pyx_k_HttpParserUpgrade[] = "HttpParserUpgrade";
static const char __pyx_k_HttpRequestParser[] = "HttpRequestParser";
static const char __pyx_k_on_chunk_complete[] = "on_chunk_complete";
static const char __pyx_k_HttpResponseParser[] = "HttpResponseParser";
static const char __pyx_k_cline_in_traceback[] = "cline_in_traceback";
static const char __pyx_k_on_headers_complete[] = "on_headers_complete";
static const char __pyx_k_on_message_complete[] = "on_message_complete";
static const char __pyx_k_invalid_headers_state[] = "invalid headers state";
static const char __pyx_k_HttpParserCallbackError[] = "HttpParserCallbackError";
static const char __pyx_k_HttpParserInvalidURLError[] = "HttpParserInvalidURLError";
static const char __pyx_k_HttpParserInvalidMethodError[] = "HttpParserInvalidMethodError";
static const char __pyx_k_HttpParserInvalidStatusError[] = "HttpParserInvalidStatusError";
static const char __pyx_k_no_default___reduce___due_to_non[] = "no default __reduce__ due to non-trivial __cinit__";
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static PyObject *__pyx_n_s_BaseException;
static PyObject *__pyx_n_s_HttpParserCallbackError;
static PyObject *__pyx_n_s_HttpParserError;
static PyObject *__pyx_n_s_HttpParserInvalidMethodError;
static PyObject *__pyx_n_s_HttpParserInvalidStatusError;
static PyObject *__pyx_n_s_HttpParserInvalidURLError;
static PyObject *__pyx_n_s_HttpParserUpgrade;
static PyObject *__pyx_n_s_HttpRequestParser;
static PyObject *__pyx_n_u_HttpRequestParser;
static PyObject *__pyx_n_s_HttpResponseParser;
static PyObject *__pyx_n_u_HttpResponseParser;
static PyObject *__pyx_n_s_MemoryError;
static PyObject *__pyx_n_s_TypeError;
static PyObject *__pyx_n_s_all;
static PyObject *__pyx_n_s_cline_in_traceback;
static PyObject *__pyx_n_s_context;
static PyObject *__pyx_n_s_errors;
static PyObject *__pyx_n_s_format;
static PyObject *__pyx_n_s_getstate;
static PyObject *__pyx_n_s_import;
static PyObject *__pyx_kp_u_invalid_headers_state;
static PyObject *__pyx_n_s_main;
static PyObject *__pyx_n_s_name;
static PyObject *__pyx_kp_s_no_default___reduce___due_to_non;
static PyObject *__pyx_n_u_on_body;
static PyObject *__pyx_n_u_on_chunk_complete;
static PyObject *__pyx_n_u_on_chunk_header;
static PyObject *__pyx_n_u_on_header;
static PyObject *__pyx_n_u_on_headers_complete;
static PyObject *__pyx_n_u_on_message_begin;
static PyObject *__pyx_n_u_on_message_complete;
static PyObject *__pyx_n_u_on_status;
static PyObject *__pyx_n_u_on_url;
static PyObject *__pyx_n_s_protocol;
static PyObject *__pyx_n_s_pyx_vtable;
static PyObject *__pyx_n_s_reduce;
static PyObject *__pyx_n_s_reduce_cython;
static PyObject *__pyx_n_s_reduce_ex;
static PyObject *__pyx_n_s_setstate;
static PyObject *__pyx_n_s_setstate_cython;
static PyObject *__pyx_n_s_test;
static int __pyx_pf_9httptools_6parser_6parser_10HttpParser___cinit__(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto */
static void __pyx_pf_9httptools_6parser_6parser_10HttpParser_2__dealloc__(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_10HttpParser_4get_http_version(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_10HttpParser_6should_keep_alive(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_10HttpParser_8should_upgrade(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_10HttpParser_10feed_data(struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self, PyObject *__pyx_v_data); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_10HttpParser_12__reduce_cython__(CYTHON_UNUSED struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_10HttpParser_14__setstate_cython__(CYTHON_UNUSED struct __pyx_obj_9httptools_6parser_6parser_HttpParser *__pyx_v_self, CYTHON_UNUSED PyObject *__pyx_v___pyx_state); /* proto */
static int __pyx_pf_9httptools_6parser_6parser_17HttpRequestParser___init__(struct __pyx_obj_9httptools_6parser_6parser_HttpRequestParser *__pyx_v_self, PyObject *__pyx_v_protocol); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_17HttpRequestParser_2get_method(struct __pyx_obj_9httptools_6parser_6parser_HttpRequestParser *__pyx_v_self); /* proto */
static PyObject *__pyx_pf_9httptools_6parser_6parser_17HttpRequestParser_4__reduce_cython__(CYTHON_UNUSED struct __pyx_obj_9httptools_6parser_6parser_HttpRequestParser *__pyx_v_self); /* proto */
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if (likely(result)) {
return __Pyx_NewRef(result);
} else if (unlikely(PyErr_Occurred())) {
return NULL;
}
#else
result = PyDict_GetItem(__pyx_d, name);
__PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
if (likely(result)) {
return __Pyx_NewRef(result);
}
#endif
#else
result = PyObject_GetItem(__pyx_d, name);
__PYX_UPDATE_DICT_CACHE(__pyx_d, result, *dict_cached_value, *dict_version)
if (likely(result)) {
return __Pyx_NewRef(result);
}
PyErr_Clear();
#endif
return __Pyx_GetBuiltinName(name);
}
/* PyObjectCall2Args */
static CYTHON_UNUSED PyObject* __Pyx_PyObject_Call2Args(PyObject* function, PyObject* arg1, PyObject* arg2) {
PyObject *args, *result = NULL;
#if CYTHON_FAST_PYCALL
if (PyFunction_Check(function)) {
PyObject *args[2] = {arg1, arg2};
return __Pyx_PyFunction_FastCall(function, args, 2);
}
#endif
#if CYTHON_FAST_PYCCALL
if (__Pyx_PyFastCFunction_Check(function)) {
PyObject *args[2] = {arg1, arg2};
return __Pyx_PyCFunction_FastCall(function, args, 2);
}
#endif
args = PyTuple_New(2);
if (unlikely(!args)) goto done;
Py_INCREF(arg1);
PyTuple_SET_ITEM(args, 0, arg1);
Py_INCREF(arg2);
PyTuple_SET_ITEM(args, 1, arg2);
Py_INCREF(function);
result = __Pyx_PyObject_Call(function, args, NULL);
Py_DECREF(args);
Py_DECREF(function);
done:
return result;
}
/* RaiseException */
#if PY_MAJOR_VERSION < 3
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb,
CYTHON_UNUSED PyObject *cause) {
__Pyx_PyThreadState_declare
Py_XINCREF(type);
if (!value || value == Py_None)
value = NULL;
else
Py_INCREF(value);
if (!tb || tb == Py_None)
tb = NULL;
else {
Py_INCREF(tb);
if (!PyTraceBack_Check(tb)) {
PyErr_SetString(PyExc_TypeError,
"raise: arg 3 must be a traceback or None");
goto raise_error;
}
}
if (PyType_Check(type)) {
#if CYTHON_COMPILING_IN_PYPY
if (!value) {
Py_INCREF(Py_None);
value = Py_None;
}
#endif
PyErr_NormalizeException(&type, &value, &tb);
} else {
if (value) {
PyErr_SetString(PyExc_TypeError,
"instance exception may not have a separate value");
goto raise_error;
}
value = type;
type = (PyObject*) Py_TYPE(type);
Py_INCREF(type);
if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
PyErr_SetString(PyExc_TypeError,
"raise: exception class must be a subclass of BaseException");
goto raise_error;
}
}
__Pyx_PyThreadState_assign
__Pyx_ErrRestore(type, value, tb);
return;
raise_error:
Py_XDECREF(value);
Py_XDECREF(type);
Py_XDECREF(tb);
return;
}
#else
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject *cause) {
PyObject* owned_instance = NULL;
if (tb == Py_None) {
tb = 0;
} else if (tb && !PyTraceBack_Check(tb)) {
PyErr_SetString(PyExc_TypeError,
"raise: arg 3 must be a traceback or None");
goto bad;
}
if (value == Py_None)
value = 0;
if (PyExceptionInstance_Check(type)) {
if (value) {
PyErr_SetString(PyExc_TypeError,
"instance exception may not have a separate value");
goto bad;
}
value = type;
type = (PyObject*) Py_TYPE(value);
} else if (PyExceptionClass_Check(type)) {
PyObject *instance_class = NULL;
if (value && PyExceptionInstance_Check(value)) {
instance_class = (PyObject*) Py_TYPE(value);
if (instance_class != type) {
int is_subclass = PyObject_IsSubclass(instance_class, type);
if (!is_subclass) {
instance_class = NULL;
} else if (unlikely(is_subclass == -1)) {
goto bad;
} else {
type = instance_class;
}
}
}
if (!instance_class) {
PyObject *args;
if (!value)
args = PyTuple_New(0);
else if (PyTuple_Check(value)) {
Py_INCREF(value);
args = value;
} else
args = PyTuple_Pack(1, value);
if (!args)
goto bad;
owned_instance = PyObject_Call(type, args, NULL);
Py_DECREF(args);
if (!owned_instance)
goto bad;
value = owned_instance;
if (!PyExceptionInstance_Check(value)) {
PyErr_Format(PyExc_TypeError,
"calling %R should have returned an instance of "
"BaseException, not %R",
type, Py_TYPE(value));
goto bad;
}
}
} else {
PyErr_SetString(PyExc_TypeError,
"raise: exception class must be a subclass of BaseException");
goto bad;
}
if (cause) {
PyObject *fixed_cause;
if (cause == Py_None) {
fixed_cause = NULL;
} else if (PyExceptionClass_Check(cause)) {
fixed_cause = PyObject_CallObject(cause, NULL);
if (fixed_cause == NULL)
goto bad;
} else if (PyExceptionInstance_Check(cause)) {
fixed_cause = cause;
Py_INCREF(fixed_cause);
} else {
PyErr_SetString(PyExc_TypeError,
"exception causes must derive from "
"BaseException");
goto bad;
}
PyException_SetCause(value, fixed_cause);
}
PyErr_SetObject(type, value);
if (tb) {
#if CYTHON_COMPILING_IN_PYPY
PyObject *tmp_type, *tmp_value, *tmp_tb;
PyErr_Fetch(&tmp_type, &tmp_value, &tmp_tb);
Py_INCREF(tb);
PyErr_Restore(tmp_type, tmp_value, tb);
Py_XDECREF(tmp_tb);
#else
PyThreadState *tstate = __Pyx_PyThreadState_Current;
PyObject* tmp_tb = tstate->curexc_traceback;
if (tb != tmp_tb) {
Py_INCREF(tb);
tstate->curexc_traceback = tb;
Py_XDECREF(tmp_tb);
}
#endif
}
bad:
Py_XDECREF(owned_instance);
return;
}
#endif
/* GetException */
#if CYTHON_FAST_THREAD_STATE
static int __Pyx__GetException(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb)
#else
static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb)
#endif
{
PyObject *local_type, *local_value, *local_tb;
#if CYTHON_FAST_THREAD_STATE
PyObject *tmp_type, *tmp_value, *tmp_tb;
local_type = tstate->curexc_type;
local_value = tstate->curexc_value;
local_tb = tstate->curexc_traceback;
tstate->curexc_type = 0;
tstate->curexc_value = 0;
tstate->curexc_traceback = 0;
#else
PyErr_Fetch(&local_type, &local_value, &local_tb);
#endif
PyErr_NormalizeException(&local_type, &local_value, &local_tb);
#if CYTHON_FAST_THREAD_STATE
if (unlikely(tstate->curexc_type))
#else
if (unlikely(PyErr_Occurred()))
#endif
goto bad;
#if PY_MAJOR_VERSION >= 3
if (local_tb) {
if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
goto bad;
}
#endif
Py_XINCREF(local_tb);
Py_XINCREF(local_type);
Py_XINCREF(local_value);
*type = local_type;
*value = local_value;
*tb = local_tb;
#if CYTHON_FAST_THREAD_STATE
#if CYTHON_USE_EXC_INFO_STACK
{
_PyErr_StackItem *exc_info = tstate->exc_info;
tmp_type = exc_info->exc_type;
tmp_value = exc_info->exc_value;
tmp_tb = exc_info->exc_traceback;
exc_info->exc_type = local_type;
exc_info->exc_value = local_value;
exc_info->exc_traceback = local_tb;
}
#else
tmp_type = tstate->exc_type;
tmp_value = tstate->exc_value;
tmp_tb = tstate->exc_traceback;
tstate->exc_type = local_type;
tstate->exc_value = local_value;
tstate->exc_traceback = local_tb;
#endif
Py_XDECREF(tmp_type);
Py_XDECREF(tmp_value);
Py_XDECREF(tmp_tb);
#else
PyErr_SetExcInfo(local_type, local_value, local_tb);
#endif
return 0;
bad:
*type = 0;
*value = 0;
*tb = 0;
Py_XDECREF(local_type);
Py_XDECREF(local_value);
Py_XDECREF(local_tb);
return -1;
}
/* SwapException */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx__ExceptionSwap(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
#if CYTHON_USE_EXC_INFO_STACK
_PyErr_StackItem *exc_info = tstate->exc_info;
tmp_type = exc_info->exc_type;
tmp_value = exc_info->exc_value;
tmp_tb = exc_info->exc_traceback;
exc_info->exc_type = *type;
exc_info->exc_value = *value;
exc_info->exc_traceback = *tb;
#else
tmp_type = tstate->exc_type;
tmp_value = tstate->exc_value;
tmp_tb = tstate->exc_traceback;
tstate->exc_type = *type;
tstate->exc_value = *value;
tstate->exc_traceback = *tb;
#endif
*type = tmp_type;
*value = tmp_value;
*tb = tmp_tb;
}
#else
static CYTHON_INLINE void __Pyx_ExceptionSwap(PyObject **type, PyObject **value, PyObject **tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
PyErr_GetExcInfo(&tmp_type, &tmp_value, &tmp_tb);
PyErr_SetExcInfo(*type, *value, *tb);
*type = tmp_type;
*value = tmp_value;
*tb = tmp_tb;
}
#endif
/* GetTopmostException */
#if CYTHON_USE_EXC_INFO_STACK
static _PyErr_StackItem *
__Pyx_PyErr_GetTopmostException(PyThreadState *tstate)
{
_PyErr_StackItem *exc_info = tstate->exc_info;
while ((exc_info->exc_type == NULL || exc_info->exc_type == Py_None) &&
exc_info->previous_item != NULL)
{
exc_info = exc_info->previous_item;
}
return exc_info;
}
#endif
/* SaveResetException */
#if CYTHON_FAST_THREAD_STATE
static CYTHON_INLINE void __Pyx__ExceptionSave(PyThreadState *tstate, PyObject **type, PyObject **value, PyObject **tb) {
#if CYTHON_USE_EXC_INFO_STACK
_PyErr_StackItem *exc_info = __Pyx_PyErr_GetTopmostException(tstate);
*type = exc_info->exc_type;
*value = exc_info->exc_value;
*tb = exc_info->exc_traceback;
#else
*type = tstate->exc_type;
*value = tstate->exc_value;
*tb = tstate->exc_traceback;
#endif
Py_XINCREF(*type);
Py_XINCREF(*value);
Py_XINCREF(*tb);
}
static CYTHON_INLINE void __Pyx__ExceptionReset(PyThreadState *tstate, PyObject *type, PyObject *value, PyObject *tb) {
PyObject *tmp_type, *tmp_value, *tmp_tb;
#if CYTHON_USE_EXC_INFO_STACK
_PyErr_StackItem *exc_info = tstate->exc_info;
tmp_type = exc_info->exc_type;
tmp_value = exc_info->exc_value;
tmp_tb = exc_info->exc_traceback;
exc_info->exc_type = type;
exc_info->exc_value = value;
exc_info->exc_traceback = tb;
#else
tmp_type = tstate->exc_type;
tmp_value = tstate->exc_value;
tmp_tb = tstate->exc_traceback;
tstate->exc_type = type;
tstate->exc_value = value;
tstate->exc_traceback = tb;
#endif
Py_XDECREF(tmp_type);
Py_XDECREF(tmp_value);
Py_XDECREF(tmp_tb);
}
#endif
/* PyObjectSetAttrStr */
#if CYTHON_USE_TYPE_SLOTS
static CYTHON_INLINE int __Pyx_PyObject_SetAttrStr(PyObject* obj, PyObject* attr_name, PyObject* value) {
PyTypeObject* tp = Py_TYPE(obj);
if (likely(tp->tp_setattro))
return tp->tp_setattro(obj, attr_name, value);
#if PY_MAJOR_VERSION < 3
if (likely(tp->tp_setattr))
return tp->tp_setattr(obj, PyString_AS_STRING(attr_name), value);
#endif
return PyObject_SetAttr(obj, attr_name, value);
}
#endif
/* RaiseDoubleKeywords */
static void __Pyx_RaiseDoubleKeywordsError(
const char* func_name,
PyObject* kw_name)
{
PyErr_Format(PyExc_TypeError,
#if PY_MAJOR_VERSION >= 3
"%s() got multiple values for keyword argument '%U'", func_name, kw_name);
#else
"%s() got multiple values for keyword argument '%s'", func_name,
PyString_AsString(kw_name));
#endif
}
/* ParseKeywords */
static int __Pyx_ParseOptionalKeywords(
PyObject *kwds,
PyObject **argnames[],
PyObject *kwds2,
PyObject *values[],
Py_ssize_t num_pos_args,
const char* function_name)
{
PyObject *key = 0, *value = 0;
Py_ssize_t pos = 0;
PyObject*** name;
PyObject*** first_kw_arg = argnames + num_pos_args;
while (PyDict_Next(kwds, &pos, &key, &value)) {
name = first_kw_arg;
while (*name && (**name != key)) name++;
if (*name) {
values[name-argnames] = value;
continue;
}
name = first_kw_arg;
#if PY_MAJOR_VERSION < 3
if (likely(PyString_Check(key))) {
while (*name) {
if ((CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**name) == PyString_GET_SIZE(key))
&& _PyString_Eq(**name, key)) {
values[name-argnames] = value;
break;
}
name++;
}
if (*name) continue;
else {
PyObject*** argname = argnames;
while (argname != first_kw_arg) {
if ((**argname == key) || (
(CYTHON_COMPILING_IN_PYPY || PyString_GET_SIZE(**argname) == PyString_GET_SIZE(key))
&& _PyString_Eq(**argname, key))) {
goto arg_passed_twice;
}
argname++;
}
}
} else
#endif
if (likely(PyUnicode_Check(key))) {
while (*name) {
int cmp = (**name == key) ? 0 :
#if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
(__Pyx_PyUnicode_GET_LENGTH(**name) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
#endif
PyUnicode_Compare(**name, key);
if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
if (cmp == 0) {
values[name-argnames] = value;
break;
}
name++;
}
if (*name) continue;
else {
PyObject*** argname = argnames;
while (argname != first_kw_arg) {
int cmp = (**argname == key) ? 0 :
#if !CYTHON_COMPILING_IN_PYPY && PY_MAJOR_VERSION >= 3
(__Pyx_PyUnicode_GET_LENGTH(**argname) != __Pyx_PyUnicode_GET_LENGTH(key)) ? 1 :
#endif
PyUnicode_Compare(**argname, key);
if (cmp < 0 && unlikely(PyErr_Occurred())) goto bad;
if (cmp == 0) goto arg_passed_twice;
argname++;
}
}
} else
goto invalid_keyword_type;
if (kwds2) {
if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
} else {
goto invalid_keyword;
}
}
return 0;
arg_passed_twice:
__Pyx_RaiseDoubleKeywordsError(function_name, key);
goto bad;
invalid_keyword_type:
PyErr_Format(PyExc_TypeError,
"%.200s() keywords must be strings", function_name);
goto bad;
invalid_keyword:
PyErr_Format(PyExc_TypeError,
#if PY_MAJOR_VERSION < 3
"%.200s() got an unexpected keyword argument '%.200s'",
function_name, PyString_AsString(key));
#else
"%s() got an unexpected keyword argument '%U'",
function_name, key);
#endif
bad:
return -1;
}
/* decode_c_bytes */
static CYTHON_INLINE PyObject* __Pyx_decode_c_bytes(
const char* cstring, Py_ssize_t length, Py_ssize_t start, Py_ssize_t stop,
const char* encoding, const char* errors,
PyObject* (*decode_func)(const char *s, Py_ssize_t size, const char *errors)) {
if (unlikely((start < 0) | (stop < 0))) {
if (start < 0) {
start += length;
if (start < 0)
start = 0;
}
if (stop < 0)
stop += length;
}
if (stop > length)
stop = length;
if (unlikely(stop <= start))
return __Pyx_NewRef(__pyx_empty_unicode);
length = stop - start;
cstring += start;
if (decode_func) {
return decode_func(cstring, length, errors);
} else {
return PyUnicode_Decode(cstring, length, encoding, errors);
}
}
/* PyObject_GenericGetAttrNoDict */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject *__Pyx_RaiseGenericGetAttributeError(PyTypeObject *tp, PyObject *attr_name) {
PyErr_Format(PyExc_AttributeError,
#if PY_MAJOR_VERSION >= 3
"'%.50s' object has no attribute '%U'",
tp->tp_name, attr_name);
#else
"'%.50s' object has no attribute '%.400s'",
tp->tp_name, PyString_AS_STRING(attr_name));
#endif
return NULL;
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GenericGetAttrNoDict(PyObject* obj, PyObject* attr_name) {
PyObject *descr;
PyTypeObject *tp = Py_TYPE(obj);
if (unlikely(!PyString_Check(attr_name))) {
return PyObject_GenericGetAttr(obj, attr_name);
}
assert(!tp->tp_dictoffset);
descr = _PyType_Lookup(tp, attr_name);
if (unlikely(!descr)) {
return __Pyx_RaiseGenericGetAttributeError(tp, attr_name);
}
Py_INCREF(descr);
#if PY_MAJOR_VERSION < 3
if (likely(PyType_HasFeature(Py_TYPE(descr), Py_TPFLAGS_HAVE_CLASS)))
#endif
{
descrgetfunc f = Py_TYPE(descr)->tp_descr_get;
if (unlikely(f)) {
PyObject *res = f(descr, obj, (PyObject *)tp);
Py_DECREF(descr);
return res;
}
}
return descr;
}
#endif
/* PyObject_GenericGetAttr */
#if CYTHON_USE_TYPE_SLOTS && CYTHON_USE_PYTYPE_LOOKUP && PY_VERSION_HEX < 0x03070000
static PyObject* __Pyx_PyObject_GenericGetAttr(PyObject* obj, PyObject* attr_name) {
if (unlikely(Py_TYPE(obj)->tp_dictoffset)) {
return PyObject_GenericGetAttr(obj, attr_name);
}
return __Pyx_PyObject_GenericGetAttrNoDict(obj, attr_name);
}
#endif
/* SetVTable */
static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
#if PY_VERSION_HEX >= 0x02070000
PyObject *ob = PyCapsule_New(vtable, 0, 0);
#else
PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
#endif
if (!ob)
goto bad;
if (PyDict_SetItem(dict, __pyx_n_s_pyx_vtable, ob) < 0)
goto bad;
Py_DECREF(ob);
return 0;
bad:
Py_XDECREF(ob);
return -1;
}
/* PyObjectGetAttrStrNoError */
static void __Pyx_PyObject_GetAttrStr_ClearAttributeError(void) {
__Pyx_PyThreadState_declare
__Pyx_PyThreadState_assign
if (likely(__Pyx_PyErr_ExceptionMatches(PyExc_AttributeError)))
__Pyx_PyErr_Clear();
}
static CYTHON_INLINE PyObject* __Pyx_PyObject_GetAttrStrNoError(PyObject* obj, PyObject* attr_name) {
PyObject *result;
#if CYTHON_COMPILING_IN_CPYTHON && CYTHON_USE_TYPE_SLOTS && PY_VERSION_HEX >= 0x030700B1
PyTypeObject* tp = Py_TYPE(obj);
if (likely(tp->tp_getattro == PyObject_GenericGetAttr)) {
return _PyObject_GenericGetAttrWithDict(obj, attr_name, NULL, 1);
}
#endif
result = __Pyx_PyObject_GetAttrStr(obj, attr_name);
if (unlikely(!result)) {
__Pyx_PyObject_GetAttrStr_ClearAttributeError();
}
return result;
}
/* SetupReduce */
static int __Pyx_setup_reduce_is_named(PyObject* meth, PyObject* name) {
int ret;
PyObject *name_attr;
name_attr = __Pyx_PyObject_GetAttrStr(meth, __pyx_n_s_name);
if (likely(name_attr)) {
ret = PyObject_RichCompareBool(name_attr, name, Py_EQ);
} else {
ret = -1;
}
if (unlikely(ret < 0)) {
PyErr_Clear();
ret = 0;
}
Py_XDECREF(name_attr);
return ret;
}
static int __Pyx_setup_reduce(PyObject* type_obj) {
int ret = 0;
PyObject *object_reduce = NULL;
PyObject *object_reduce_ex = NULL;
PyObject *reduce = NULL;
PyObject *reduce_ex = NULL;
PyObject *reduce_cython = NULL;
PyObject *setstate = NULL;
PyObject *setstate_cython = NULL;
#if CYTHON_USE_PYTYPE_LOOKUP
if (_PyType_Lookup((PyTypeObject*)type_obj, __pyx_n_s_getstate)) goto __PYX_GOOD;
#else
if (PyObject_HasAttr(type_obj, __pyx_n_s_getstate)) goto __PYX_GOOD;
#endif
#if CYTHON_USE_PYTYPE_LOOKUP
object_reduce_ex = _PyType_Lookup(&PyBaseObject_Type, __pyx_n_s_reduce_ex); if (!object_reduce_ex) goto __PYX_BAD;
#else
object_reduce_ex = __Pyx_PyObject_GetAttrStr((PyObject*)&PyBaseObject_Type, __pyx_n_s_reduce_ex); if (!object_reduce_ex) goto __PYX_BAD;
#endif
reduce_ex = __Pyx_PyObject_GetAttrStr(type_obj, __pyx_n_s_reduce_ex); if (unlikely(!reduce_ex)) goto __PYX_BAD;
if (reduce_ex == object_reduce_ex) {
#if CYTHON_USE_PYTYPE_LOOKUP
object_reduce = _PyType_Lookup(&PyBaseObject_Type, __pyx_n_s_reduce); if (!object_reduce) goto __PYX_BAD;
#else
object_reduce = __Pyx_PyObject_GetAttrStr((PyObject*)&PyBaseObject_Type, __pyx_n_s_reduce); if (!object_reduce) goto __PYX_BAD;
#endif
reduce = __Pyx_PyObject_GetAttrStr(type_obj, __pyx_n_s_reduce); if (unlikely(!reduce)) goto __PYX_BAD;
if (reduce == object_reduce || __Pyx_setup_reduce_is_named(reduce, __pyx_n_s_reduce_cython)) {
reduce_cython = __Pyx_PyObject_GetAttrStrNoError(type_obj, __pyx_n_s_reduce_cython);
if (likely(reduce_cython)) {
ret = PyDict_SetItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_reduce, reduce_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
ret = PyDict_DelItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_reduce_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
} else if (reduce == object_reduce || PyErr_Occurred()) {
goto __PYX_BAD;
}
setstate = __Pyx_PyObject_GetAttrStr(type_obj, __pyx_n_s_setstate);
if (!setstate) PyErr_Clear();
if (!setstate || __Pyx_setup_reduce_is_named(setstate, __pyx_n_s_setstate_cython)) {
setstate_cython = __Pyx_PyObject_GetAttrStrNoError(type_obj, __pyx_n_s_setstate_cython);
if (likely(setstate_cython)) {
ret = PyDict_SetItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_setstate, setstate_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
ret = PyDict_DelItem(((PyTypeObject*)type_obj)->tp_dict, __pyx_n_s_setstate_cython); if (unlikely(ret < 0)) goto __PYX_BAD;
} else if (!setstate || PyErr_Occurred()) {
goto __PYX_BAD;
}
}
PyType_Modified((PyTypeObject*)type_obj);
}
}
goto __PYX_GOOD;
__PYX_BAD:
if (!PyErr_Occurred())
PyErr_Format(PyExc_RuntimeError, "Unable to initialize pickling for %s", ((PyTypeObject*)type_obj)->tp_name);
ret = -1;
__PYX_GOOD:
#if !CYTHON_USE_PYTYPE_LOOKUP
Py_XDECREF(object_reduce);
Py_XDECREF(object_reduce_ex);
#endif
Py_XDECREF(reduce);
Py_XDECREF(reduce_ex);
Py_XDECREF(reduce_cython);
Py_XDECREF(setstate);
Py_XDECREF(setstate_cython);
return ret;
}
/* TypeImport */
#ifndef __PYX_HAVE_RT_ImportType
#define __PYX_HAVE_RT_ImportType
static PyTypeObject *__Pyx_ImportType(PyObject *module, const char *module_name, const char *class_name,
size_t size, enum __Pyx_ImportType_CheckSize check_size)
{
PyObject *result = 0;
char warning[200];
Py_ssize_t basicsize;
#ifdef Py_LIMITED_API
PyObject *py_basicsize;
#endif
result = PyObject_GetAttrString(module, class_name);
if (!result)
goto bad;
if (!PyType_Check(result)) {
PyErr_Format(PyExc_TypeError,
"%.200s.%.200s is not a type object",
module_name, class_name);
goto bad;
}
#ifndef Py_LIMITED_API
basicsize = ((PyTypeObject *)result)->tp_basicsize;
#else
py_basicsize = PyObject_GetAttrString(result, "__basicsize__");
if (!py_basicsize)
goto bad;
basicsize = PyLong_AsSsize_t(py_basicsize);
Py_DECREF(py_basicsize);
py_basicsize = 0;
if (basicsize == (Py_ssize_t)-1 && PyErr_Occurred())
goto bad;
#endif
if ((size_t)basicsize < size) {
PyErr_Format(PyExc_ValueError,
"%.200s.%.200s size changed, may indicate binary incompatibility. "
"Expected %zd from C header, got %zd from PyObject",
module_name, class_name, size, basicsize);
goto bad;
}
if (check_size == __Pyx_ImportType_CheckSize_Error && (size_t)basicsize != size) {
PyErr_Format(PyExc_ValueError,
"%.200s.%.200s size changed, may indicate binary incompatibility. "
"Expected %zd from C header, got %zd from PyObject",
module_name, class_name, size, basicsize);
goto bad;
}
else if (check_size == __Pyx_ImportType_CheckSize_Warn && (size_t)basicsize > size) {
PyOS_snprintf(warning, sizeof(warning),
"%s.%s size changed, may indicate binary incompatibility. "
"Expected %zd from C header, got %zd from PyObject",
module_name, class_name, size, basicsize);
if (PyErr_WarnEx(NULL, warning, 0) < 0) goto bad;
}
return (PyTypeObject *)result;
bad:
Py_XDECREF(result);
return NULL;
}
#endif
/* Import */
static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list, int level) {
PyObject *empty_list = 0;
PyObject *module = 0;
PyObject *global_dict = 0;
PyObject *empty_dict = 0;
PyObject *list;
#if PY_MAJOR_VERSION < 3
PyObject *py_import;
py_import = __Pyx_PyObject_GetAttrStr(__pyx_b, __pyx_n_s_import);
if (!py_import)
goto bad;
#endif
if (from_list)
list = from_list;
else {
empty_list = PyList_New(0);
if (!empty_list)
goto bad;
list = empty_list;
}
global_dict = PyModule_GetDict(__pyx_m);
if (!global_dict)
goto bad;
empty_dict = PyDict_New();
if (!empty_dict)
goto bad;
{
#if PY_MAJOR_VERSION >= 3
if (level == -1) {
if ((1) && (strchr(__Pyx_MODULE_NAME, '.'))) {
module = PyImport_ImportModuleLevelObject(
name, global_dict, empty_dict, list, 1);
if (!module) {
if (!PyErr_ExceptionMatches(PyExc_ImportError))
goto bad;
PyErr_Clear();
}
}
level = 0;
}
#endif
if (!module) {
#if PY_MAJOR_VERSION < 3
PyObject *py_level = PyInt_FromLong(level);
if (!py_level)
goto bad;
module = PyObject_CallFunctionObjArgs(py_import,
name, global_dict, empty_dict, list, py_level, (PyObject *)NULL);
Py_DECREF(py_level);
#else
module = PyImport_ImportModuleLevelObject(
name, global_dict, empty_dict, list, level);
#endif
}
}
bad:
#if PY_MAJOR_VERSION < 3
Py_XDECREF(py_import);
#endif
Py_XDECREF(empty_list);
Py_XDECREF(empty_dict);
return module;
}
/* ImportFrom */
static PyObject* __Pyx_ImportFrom(PyObject* module, PyObject* name) {
PyObject* value = __Pyx_PyObject_GetAttrStr(module, name);
if (unlikely(!value) && PyErr_ExceptionMatches(PyExc_AttributeError)) {
PyErr_Format(PyExc_ImportError,
#if PY_MAJOR_VERSION < 3
"cannot import name %.230s", PyString_AS_STRING(name));
#else
"cannot import name %S", name);
#endif
}
return value;
}
/* CLineInTraceback */
#ifndef CYTHON_CLINE_IN_TRACEBACK
static int __Pyx_CLineForTraceback(CYTHON_NCP_UNUSED PyThreadState *tstate, int c_line) {
PyObject *use_cline;
PyObject *ptype, *pvalue, *ptraceback;
#if CYTHON_COMPILING_IN_CPYTHON
PyObject **cython_runtime_dict;
#endif
if (unlikely(!__pyx_cython_runtime)) {
return c_line;
}
__Pyx_ErrFetchInState(tstate, &ptype, &pvalue, &ptraceback);
#if CYTHON_COMPILING_IN_CPYTHON
cython_runtime_dict = _PyObject_GetDictPtr(__pyx_cython_runtime);
if (likely(cython_runtime_dict)) {
__PYX_PY_DICT_LOOKUP_IF_MODIFIED(
use_cline, *cython_runtime_dict,
__Pyx_PyDict_GetItemStr(*cython_runtime_dict, __pyx_n_s_cline_in_traceback))
} else
#endif
{
PyObject *use_cline_obj = __Pyx_PyObject_GetAttrStr(__pyx_cython_runtime, __pyx_n_s_cline_in_traceback);
if (use_cline_obj) {
use_cline = PyObject_Not(use_cline_obj) ? Py_False : Py_True;
Py_DECREF(use_cline_obj);
} else {
PyErr_Clear();
use_cline = NULL;
}
}
if (!use_cline) {
c_line = 0;
(void) PyObject_SetAttr(__pyx_cython_runtime, __pyx_n_s_cline_in_traceback, Py_False);
}
else if (use_cline == Py_False || (use_cline != Py_True && PyObject_Not(use_cline) != 0)) {
c_line = 0;
}
__Pyx_ErrRestoreInState(tstate, ptype, pvalue, ptraceback);
return c_line;
}
#endif
/* CodeObjectCache */
static int __pyx_bisect_code_objects(__Pyx_CodeObjectCacheEntry* entries, int count, int code_line) {
int start = 0, mid = 0, end = count - 1;
if (end >= 0 && code_line > entries[end].code_line) {
return count;
}
while (start < end) {
mid = start + (end - start) / 2;
if (code_line < entries[mid].code_line) {
end = mid;
} else if (code_line > entries[mid].code_line) {
start = mid + 1;
} else {
return mid;
}
}
if (code_line <= entries[mid].code_line) {
return mid;
} else {
return mid + 1;
}
}
static PyCodeObject *__pyx_find_code_object(int code_line) {
PyCodeObject* code_object;
int pos;
if (unlikely(!code_line) || unlikely(!__pyx_code_cache.entries)) {
return NULL;
}
pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
if (unlikely(pos >= __pyx_code_cache.count) || unlikely(__pyx_code_cache.entries[pos].code_line != code_line)) {
return NULL;
}
code_object = __pyx_code_cache.entries[pos].code_object;
Py_INCREF(code_object);
return code_object;
}
static void __pyx_insert_code_object(int code_line, PyCodeObject* code_object) {
int pos, i;
__Pyx_CodeObjectCacheEntry* entries = __pyx_code_cache.entries;
if (unlikely(!code_line)) {
return;
}
if (unlikely(!entries)) {
entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Malloc(64*sizeof(__Pyx_CodeObjectCacheEntry));
if (likely(entries)) {
__pyx_code_cache.entries = entries;
__pyx_code_cache.max_count = 64;
__pyx_code_cache.count = 1;
entries[0].code_line = code_line;
entries[0].code_object = code_object;
Py_INCREF(code_object);
}
return;
}
pos = __pyx_bisect_code_objects(__pyx_code_cache.entries, __pyx_code_cache.count, code_line);
if ((pos < __pyx_code_cache.count) && unlikely(__pyx_code_cache.entries[pos].code_line == code_line)) {
PyCodeObject* tmp = entries[pos].code_object;
entries[pos].code_object = code_object;
Py_DECREF(tmp);
return;
}
if (__pyx_code_cache.count == __pyx_code_cache.max_count) {
int new_max = __pyx_code_cache.max_count + 64;
entries = (__Pyx_CodeObjectCacheEntry*)PyMem_Realloc(
__pyx_code_cache.entries, ((size_t)new_max) * sizeof(__Pyx_CodeObjectCacheEntry));
if (unlikely(!entries)) {
return;
}
__pyx_code_cache.entries = entries;
__pyx_code_cache.max_count = new_max;
}
for (i=__pyx_code_cache.count; i>pos; i--) {
entries[i] = entries[i-1];
}
entries[pos].code_line = code_line;
entries[pos].code_object = code_object;
__pyx_code_cache.count++;
Py_INCREF(code_object);
}
/* AddTraceback */
#include "compile.h"
#include "frameobject.h"
#include "traceback.h"
static PyCodeObject* __Pyx_CreateCodeObjectForTraceback(
const char *funcname, int c_line,
int py_line, const char *filename) {
PyCodeObject *py_code = NULL;
PyObject *py_funcname = NULL;
#if PY_MAJOR_VERSION < 3
PyObject *py_srcfile = NULL;
py_srcfile = PyString_FromString(filename);
if (!py_srcfile) goto bad;
#endif
if (c_line) {
#if PY_MAJOR_VERSION < 3
py_funcname = PyString_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
if (!py_funcname) goto bad;
#else
py_funcname = PyUnicode_FromFormat( "%s (%s:%d)", funcname, __pyx_cfilenm, c_line);
if (!py_funcname) goto bad;
funcname = PyUnicode_AsUTF8(py_funcname);
if (!funcname) goto bad;
#endif
}
else {
#if PY_MAJOR_VERSION < 3
py_funcname = PyString_FromString(funcname);
if (!py_funcname) goto bad;
#endif
}
#if PY_MAJOR_VERSION < 3
py_code = __Pyx_PyCode_New(
0,
0,
0,
0,
0,
__pyx_empty_bytes, /*PyObject *code,*/
__pyx_empty_tuple, /*PyObject *consts,*/
__pyx_empty_tuple, /*PyObject *names,*/
__pyx_empty_tuple, /*PyObject *varnames,*/
__pyx_empty_tuple, /*PyObject *freevars,*/
__pyx_empty_tuple, /*PyObject *cellvars,*/
py_srcfile, /*PyObject *filename,*/
py_funcname, /*PyObject *name,*/
py_line,
__pyx_empty_bytes /*PyObject *lnotab*/
);
Py_DECREF(py_srcfile);
#else
py_code = PyCode_NewEmpty(filename, funcname, py_line);
#endif
Py_XDECREF(py_funcname); // XDECREF since it's only set on Py3 if cline
return py_code;
bad:
Py_XDECREF(py_funcname);
#if PY_MAJOR_VERSION < 3
Py_XDECREF(py_srcfile);
#endif
return NULL;
}
static void __Pyx_AddTraceback(const char *funcname, int c_line,
int py_line, const char *filename) {
PyCodeObject *py_code = 0;
PyFrameObject *py_frame = 0;
PyThreadState *tstate = __Pyx_PyThreadState_Current;
if (c_line) {
c_line = __Pyx_CLineForTraceback(tstate, c_line);
}
py_code = __pyx_find_code_object(c_line ? -c_line : py_line);
if (!py_code) {
py_code = __Pyx_CreateCodeObjectForTraceback(
funcname, c_line, py_line, filename);
if (!py_code) goto bad;
__pyx_insert_code_object(c_line ? -c_line : py_line, py_code);
}
py_frame = PyFrame_New(
tstate, /*PyThreadState *tstate,*/
py_code, /*PyCodeObject *code,*/
__pyx_d, /*PyObject *globals,*/
0 /*PyObject *locals*/
);
if (!py_frame) goto bad;
__Pyx_PyFrame_SetLineNumber(py_frame, py_line);
PyTraceBack_Here(py_frame);
bad:
Py_XDECREF(py_code);
Py_XDECREF(py_frame);
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_uint8_t(uint8_t value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const uint8_t neg_one = (uint8_t) -1, const_zero = (uint8_t) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(uint8_t) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(uint8_t) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(uint8_t) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(uint8_t) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(uint8_t) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(uint8_t),
little, !is_unsigned);
}
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_int(int value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const int neg_one = (int) -1, const_zero = (int) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(int) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(int) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(int) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(int),
little, !is_unsigned);
}
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_ptrdiff_t(ptrdiff_t value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const ptrdiff_t neg_one = (ptrdiff_t) -1, const_zero = (ptrdiff_t) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(ptrdiff_t) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(ptrdiff_t) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(ptrdiff_t) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(ptrdiff_t) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(ptrdiff_t) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(ptrdiff_t),
little, !is_unsigned);
}
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_uint16_t(uint16_t value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const uint16_t neg_one = (uint16_t) -1, const_zero = (uint16_t) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(uint16_t) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(uint16_t) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(uint16_t) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(uint16_t) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(uint16_t) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(uint16_t),
little, !is_unsigned);
}
}
/* CIntToPy */
static CYTHON_INLINE PyObject* __Pyx_PyInt_From_long(long value) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const long neg_one = (long) -1, const_zero = (long) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
if (is_unsigned) {
if (sizeof(long) < sizeof(long)) {
return PyInt_FromLong((long) value);
} else if (sizeof(long) <= sizeof(unsigned long)) {
return PyLong_FromUnsignedLong((unsigned long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
return PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG) value);
#endif
}
} else {
if (sizeof(long) <= sizeof(long)) {
return PyInt_FromLong((long) value);
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
return PyLong_FromLongLong((PY_LONG_LONG) value);
#endif
}
}
{
int one = 1; int little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&value;
return _PyLong_FromByteArray(bytes, sizeof(long),
little, !is_unsigned);
}
}
/* CIntFromPyVerify */
#define __PYX_VERIFY_RETURN_INT(target_type, func_type, func_value)\
__PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 0)
#define __PYX_VERIFY_RETURN_INT_EXC(target_type, func_type, func_value)\
__PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, 1)
#define __PYX__VERIFY_RETURN_INT(target_type, func_type, func_value, exc)\
{\
func_type value = func_value;\
if (sizeof(target_type) < sizeof(func_type)) {\
if (unlikely(value != (func_type) (target_type) value)) {\
func_type zero = 0;\
if (exc && unlikely(value == (func_type)-1 && PyErr_Occurred()))\
return (target_type) -1;\
if (is_unsigned && unlikely(value < zero))\
goto raise_neg_overflow;\
else\
goto raise_overflow;\
}\
}\
return (target_type) value;\
}
/* CIntFromPy */
static CYTHON_INLINE long __Pyx_PyInt_As_long(PyObject *x) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const long neg_one = (long) -1, const_zero = (long) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
if (likely(PyInt_Check(x))) {
if (sizeof(long) < sizeof(long)) {
__PYX_VERIFY_RETURN_INT(long, long, PyInt_AS_LONG(x))
} else {
long val = PyInt_AS_LONG(x);
if (is_unsigned && unlikely(val < 0)) {
goto raise_neg_overflow;
}
return (long) val;
}
} else
#endif
if (likely(PyLong_Check(x))) {
if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (long) 0;
case 1: __PYX_VERIFY_RETURN_INT(long, digit, digits[0])
case 2:
if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) >= 2 * PyLong_SHIFT) {
return (long) (((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
}
}
break;
case 3:
if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) >= 3 * PyLong_SHIFT) {
return (long) (((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
}
}
break;
case 4:
if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) >= 4 * PyLong_SHIFT) {
return (long) (((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0]));
}
}
break;
}
#endif
#if CYTHON_COMPILING_IN_CPYTHON
if (unlikely(Py_SIZE(x) < 0)) {
goto raise_neg_overflow;
}
#else
{
int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
if (unlikely(result < 0))
return (long) -1;
if (unlikely(result == 1))
goto raise_neg_overflow;
}
#endif
if (sizeof(long) <= sizeof(unsigned long)) {
__PYX_VERIFY_RETURN_INT_EXC(long, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(unsigned PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(long, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
}
} else {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (long) 0;
case -1: __PYX_VERIFY_RETURN_INT(long, sdigit, (sdigit) (-(sdigit)digits[0]))
case 1: __PYX_VERIFY_RETURN_INT(long, digit, +digits[0])
case -2:
if (8 * sizeof(long) - 1 > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
return (long) (((long)-1)*(((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case 2:
if (8 * sizeof(long) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
return (long) ((((((long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case -3:
if (8 * sizeof(long) - 1 > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
return (long) (((long)-1)*(((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case 3:
if (8 * sizeof(long) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
return (long) ((((((((long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case -4:
if (8 * sizeof(long) - 1 > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
return (long) (((long)-1)*(((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
case 4:
if (8 * sizeof(long) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(long, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(long) - 1 > 4 * PyLong_SHIFT) {
return (long) ((((((((((long)digits[3]) << PyLong_SHIFT) | (long)digits[2]) << PyLong_SHIFT) | (long)digits[1]) << PyLong_SHIFT) | (long)digits[0])));
}
}
break;
}
#endif
if (sizeof(long) <= sizeof(long)) {
__PYX_VERIFY_RETURN_INT_EXC(long, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(long) <= sizeof(PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(long, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
}
}
{
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
PyErr_SetString(PyExc_RuntimeError,
"_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
long val;
PyObject *v = __Pyx_PyNumber_IntOrLong(x);
#if PY_MAJOR_VERSION < 3
if (likely(v) && !PyLong_Check(v)) {
PyObject *tmp = v;
v = PyNumber_Long(tmp);
Py_DECREF(tmp);
}
#endif
if (likely(v)) {
int one = 1; int is_little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&val;
int ret = _PyLong_AsByteArray((PyLongObject *)v,
bytes, sizeof(val),
is_little, !is_unsigned);
Py_DECREF(v);
if (likely(!ret))
return val;
}
#endif
return (long) -1;
}
} else {
long val;
PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
if (!tmp) return (long) -1;
val = __Pyx_PyInt_As_long(tmp);
Py_DECREF(tmp);
return val;
}
raise_overflow:
PyErr_SetString(PyExc_OverflowError,
"value too large to convert to long");
return (long) -1;
raise_neg_overflow:
PyErr_SetString(PyExc_OverflowError,
"can't convert negative value to long");
return (long) -1;
}
/* CIntFromPy */
static CYTHON_INLINE int __Pyx_PyInt_As_int(PyObject *x) {
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wconversion"
#endif
const int neg_one = (int) -1, const_zero = (int) 0;
#ifdef __Pyx_HAS_GCC_DIAGNOSTIC
#pragma GCC diagnostic pop
#endif
const int is_unsigned = neg_one > const_zero;
#if PY_MAJOR_VERSION < 3
if (likely(PyInt_Check(x))) {
if (sizeof(int) < sizeof(long)) {
__PYX_VERIFY_RETURN_INT(int, long, PyInt_AS_LONG(x))
} else {
long val = PyInt_AS_LONG(x);
if (is_unsigned && unlikely(val < 0)) {
goto raise_neg_overflow;
}
return (int) val;
}
} else
#endif
if (likely(PyLong_Check(x))) {
if (is_unsigned) {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (int) 0;
case 1: __PYX_VERIFY_RETURN_INT(int, digit, digits[0])
case 2:
if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) >= 2 * PyLong_SHIFT) {
return (int) (((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
}
}
break;
case 3:
if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) >= 3 * PyLong_SHIFT) {
return (int) (((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
}
}
break;
case 4:
if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) >= 4 * PyLong_SHIFT) {
return (int) (((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0]));
}
}
break;
}
#endif
#if CYTHON_COMPILING_IN_CPYTHON
if (unlikely(Py_SIZE(x) < 0)) {
goto raise_neg_overflow;
}
#else
{
int result = PyObject_RichCompareBool(x, Py_False, Py_LT);
if (unlikely(result < 0))
return (int) -1;
if (unlikely(result == 1))
goto raise_neg_overflow;
}
#endif
if (sizeof(int) <= sizeof(unsigned long)) {
__PYX_VERIFY_RETURN_INT_EXC(int, unsigned long, PyLong_AsUnsignedLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(int) <= sizeof(unsigned PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(int, unsigned PY_LONG_LONG, PyLong_AsUnsignedLongLong(x))
#endif
}
} else {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)x)->ob_digit;
switch (Py_SIZE(x)) {
case 0: return (int) 0;
case -1: __PYX_VERIFY_RETURN_INT(int, sdigit, (sdigit) (-(sdigit)digits[0]))
case 1: __PYX_VERIFY_RETURN_INT(int, digit, +digits[0])
case -2:
if (8 * sizeof(int) - 1 > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, long, -(long) (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
return (int) (((int)-1)*(((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case 2:
if (8 * sizeof(int) > 1 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 2 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
return (int) ((((((int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case -3:
if (8 * sizeof(int) - 1 > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
return (int) (((int)-1)*(((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case 3:
if (8 * sizeof(int) > 2 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 3 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
return (int) ((((((((int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case -4:
if (8 * sizeof(int) - 1 > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, long, -(long) (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
return (int) (((int)-1)*(((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
case 4:
if (8 * sizeof(int) > 3 * PyLong_SHIFT) {
if (8 * sizeof(unsigned long) > 4 * PyLong_SHIFT) {
__PYX_VERIFY_RETURN_INT(int, unsigned long, (((((((((unsigned long)digits[3]) << PyLong_SHIFT) | (unsigned long)digits[2]) << PyLong_SHIFT) | (unsigned long)digits[1]) << PyLong_SHIFT) | (unsigned long)digits[0])))
} else if (8 * sizeof(int) - 1 > 4 * PyLong_SHIFT) {
return (int) ((((((((((int)digits[3]) << PyLong_SHIFT) | (int)digits[2]) << PyLong_SHIFT) | (int)digits[1]) << PyLong_SHIFT) | (int)digits[0])));
}
}
break;
}
#endif
if (sizeof(int) <= sizeof(long)) {
__PYX_VERIFY_RETURN_INT_EXC(int, long, PyLong_AsLong(x))
#ifdef HAVE_LONG_LONG
} else if (sizeof(int) <= sizeof(PY_LONG_LONG)) {
__PYX_VERIFY_RETURN_INT_EXC(int, PY_LONG_LONG, PyLong_AsLongLong(x))
#endif
}
}
{
#if CYTHON_COMPILING_IN_PYPY && !defined(_PyLong_AsByteArray)
PyErr_SetString(PyExc_RuntimeError,
"_PyLong_AsByteArray() not available in PyPy, cannot convert large numbers");
#else
int val;
PyObject *v = __Pyx_PyNumber_IntOrLong(x);
#if PY_MAJOR_VERSION < 3
if (likely(v) && !PyLong_Check(v)) {
PyObject *tmp = v;
v = PyNumber_Long(tmp);
Py_DECREF(tmp);
}
#endif
if (likely(v)) {
int one = 1; int is_little = (int)*(unsigned char *)&one;
unsigned char *bytes = (unsigned char *)&val;
int ret = _PyLong_AsByteArray((PyLongObject *)v,
bytes, sizeof(val),
is_little, !is_unsigned);
Py_DECREF(v);
if (likely(!ret))
return val;
}
#endif
return (int) -1;
}
} else {
int val;
PyObject *tmp = __Pyx_PyNumber_IntOrLong(x);
if (!tmp) return (int) -1;
val = __Pyx_PyInt_As_int(tmp);
Py_DECREF(tmp);
return val;
}
raise_overflow:
PyErr_SetString(PyExc_OverflowError,
"value too large to convert to int");
return (int) -1;
raise_neg_overflow:
PyErr_SetString(PyExc_OverflowError,
"can't convert negative value to int");
return (int) -1;
}
/* FastTypeChecks */
#if CYTHON_COMPILING_IN_CPYTHON
static int __Pyx_InBases(PyTypeObject *a, PyTypeObject *b) {
while (a) {
a = a->tp_base;
if (a == b)
return 1;
}
return b == &PyBaseObject_Type;
}
static CYTHON_INLINE int __Pyx_IsSubtype(PyTypeObject *a, PyTypeObject *b) {
PyObject *mro;
if (a == b) return 1;
mro = a->tp_mro;
if (likely(mro)) {
Py_ssize_t i, n;
n = PyTuple_GET_SIZE(mro);
for (i = 0; i < n; i++) {
if (PyTuple_GET_ITEM(mro, i) == (PyObject *)b)
return 1;
}
return 0;
}
return __Pyx_InBases(a, b);
}
#if PY_MAJOR_VERSION == 2
static int __Pyx_inner_PyErr_GivenExceptionMatches2(PyObject *err, PyObject* exc_type1, PyObject* exc_type2) {
PyObject *exception, *value, *tb;
int res;
__Pyx_PyThreadState_declare
__Pyx_PyThreadState_assign
__Pyx_ErrFetch(&exception, &value, &tb);
res = exc_type1 ? PyObject_IsSubclass(err, exc_type1) : 0;
if (unlikely(res == -1)) {
PyErr_WriteUnraisable(err);
res = 0;
}
if (!res) {
res = PyObject_IsSubclass(err, exc_type2);
if (unlikely(res == -1)) {
PyErr_WriteUnraisable(err);
res = 0;
}
}
__Pyx_ErrRestore(exception, value, tb);
return res;
}
#else
static CYTHON_INLINE int __Pyx_inner_PyErr_GivenExceptionMatches2(PyObject *err, PyObject* exc_type1, PyObject *exc_type2) {
int res = exc_type1 ? __Pyx_IsSubtype((PyTypeObject*)err, (PyTypeObject*)exc_type1) : 0;
if (!res) {
res = __Pyx_IsSubtype((PyTypeObject*)err, (PyTypeObject*)exc_type2);
}
return res;
}
#endif
static int __Pyx_PyErr_GivenExceptionMatchesTuple(PyObject *exc_type, PyObject *tuple) {
Py_ssize_t i, n;
assert(PyExceptionClass_Check(exc_type));
n = PyTuple_GET_SIZE(tuple);
#if PY_MAJOR_VERSION >= 3
for (i=0; i<n; i++) {
if (exc_type == PyTuple_GET_ITEM(tuple, i)) return 1;
}
#endif
for (i=0; i<n; i++) {
PyObject *t = PyTuple_GET_ITEM(tuple, i);
#if PY_MAJOR_VERSION < 3
if (likely(exc_type == t)) return 1;
#endif
if (likely(PyExceptionClass_Check(t))) {
if (__Pyx_inner_PyErr_GivenExceptionMatches2(exc_type, NULL, t)) return 1;
} else {
}
}
return 0;
}
static CYTHON_INLINE int __Pyx_PyErr_GivenExceptionMatches(PyObject *err, PyObject* exc_type) {
if (likely(err == exc_type)) return 1;
if (likely(PyExceptionClass_Check(err))) {
if (likely(PyExceptionClass_Check(exc_type))) {
return __Pyx_inner_PyErr_GivenExceptionMatches2(err, NULL, exc_type);
} else if (likely(PyTuple_Check(exc_type))) {
return __Pyx_PyErr_GivenExceptionMatchesTuple(err, exc_type);
} else {
}
}
return PyErr_GivenExceptionMatches(err, exc_type);
}
static CYTHON_INLINE int __Pyx_PyErr_GivenExceptionMatches2(PyObject *err, PyObject *exc_type1, PyObject *exc_type2) {
assert(PyExceptionClass_Check(exc_type1));
assert(PyExceptionClass_Check(exc_type2));
if (likely(err == exc_type1 || err == exc_type2)) return 1;
if (likely(PyExceptionClass_Check(err))) {
return __Pyx_inner_PyErr_GivenExceptionMatches2(err, exc_type1, exc_type2);
}
return (PyErr_GivenExceptionMatches(err, exc_type1) || PyErr_GivenExceptionMatches(err, exc_type2));
}
#endif
/* CheckBinaryVersion */
static int __Pyx_check_binary_version(void) {
char ctversion[4], rtversion[4];
PyOS_snprintf(ctversion, 4, "%d.%d", PY_MAJOR_VERSION, PY_MINOR_VERSION);
PyOS_snprintf(rtversion, 4, "%s", Py_GetVersion());
if (ctversion[0] != rtversion[0] || ctversion[2] != rtversion[2]) {
char message[200];
PyOS_snprintf(message, sizeof(message),
"compiletime version %s of module '%.100s' "
"does not match runtime version %s",
ctversion, __Pyx_MODULE_NAME, rtversion);
return PyErr_WarnEx(NULL, message, 1);
}
return 0;
}
/* InitStrings */
static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
while (t->p) {
#if PY_MAJOR_VERSION < 3
if (t->is_unicode) {
*t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
} else if (t->intern) {
*t->p = PyString_InternFromString(t->s);
} else {
*t->p = PyString_FromStringAndSize(t->s, t->n - 1);
}
#else
if (t->is_unicode | t->is_str) {
if (t->intern) {
*t->p = PyUnicode_InternFromString(t->s);
} else if (t->encoding) {
*t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
} else {
*t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
}
} else {
*t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
}
#endif
if (!*t->p)
return -1;
if (PyObject_Hash(*t->p) == -1)
return -1;
++t;
}
return 0;
}
static CYTHON_INLINE PyObject* __Pyx_PyUnicode_FromString(const char* c_str) {
return __Pyx_PyUnicode_FromStringAndSize(c_str, (Py_ssize_t)strlen(c_str));
}
static CYTHON_INLINE const char* __Pyx_PyObject_AsString(PyObject* o) {
Py_ssize_t ignore;
return __Pyx_PyObject_AsStringAndSize(o, &ignore);
}
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
#if !CYTHON_PEP393_ENABLED
static const char* __Pyx_PyUnicode_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
char* defenc_c;
PyObject* defenc = _PyUnicode_AsDefaultEncodedString(o, NULL);
if (!defenc) return NULL;
defenc_c = PyBytes_AS_STRING(defenc);
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
{
char* end = defenc_c + PyBytes_GET_SIZE(defenc);
char* c;
for (c = defenc_c; c < end; c++) {
if ((unsigned char) (*c) >= 128) {
PyUnicode_AsASCIIString(o);
return NULL;
}
}
}
#endif
*length = PyBytes_GET_SIZE(defenc);
return defenc_c;
}
#else
static CYTHON_INLINE const char* __Pyx_PyUnicode_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
if (unlikely(__Pyx_PyUnicode_READY(o) == -1)) return NULL;
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
if (likely(PyUnicode_IS_ASCII(o))) {
*length = PyUnicode_GET_LENGTH(o);
return PyUnicode_AsUTF8(o);
} else {
PyUnicode_AsASCIIString(o);
return NULL;
}
#else
return PyUnicode_AsUTF8AndSize(o, length);
#endif
}
#endif
#endif
static CYTHON_INLINE const char* __Pyx_PyObject_AsStringAndSize(PyObject* o, Py_ssize_t *length) {
#if __PYX_DEFAULT_STRING_ENCODING_IS_ASCII || __PYX_DEFAULT_STRING_ENCODING_IS_DEFAULT
if (
#if PY_MAJOR_VERSION < 3 && __PYX_DEFAULT_STRING_ENCODING_IS_ASCII
__Pyx_sys_getdefaultencoding_not_ascii &&
#endif
PyUnicode_Check(o)) {
return __Pyx_PyUnicode_AsStringAndSize(o, length);
} else
#endif
#if (!CYTHON_COMPILING_IN_PYPY) || (defined(PyByteArray_AS_STRING) && defined(PyByteArray_GET_SIZE))
if (PyByteArray_Check(o)) {
*length = PyByteArray_GET_SIZE(o);
return PyByteArray_AS_STRING(o);
} else
#endif
{
char* result;
int r = PyBytes_AsStringAndSize(o, &result, length);
if (unlikely(r < 0)) {
return NULL;
} else {
return result;
}
}
}
static CYTHON_INLINE int __Pyx_PyObject_IsTrue(PyObject* x) {
int is_true = x == Py_True;
if (is_true | (x == Py_False) | (x == Py_None)) return is_true;
else return PyObject_IsTrue(x);
}
static CYTHON_INLINE int __Pyx_PyObject_IsTrueAndDecref(PyObject* x) {
int retval;
if (unlikely(!x)) return -1;
retval = __Pyx_PyObject_IsTrue(x);
Py_DECREF(x);
return retval;
}
static PyObject* __Pyx_PyNumber_IntOrLongWrongResultType(PyObject* result, const char* type_name) {
#if PY_MAJOR_VERSION >= 3
if (PyLong_Check(result)) {
if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
"__int__ returned non-int (type %.200s). "
"The ability to return an instance of a strict subclass of int "
"is deprecated, and may be removed in a future version of Python.",
Py_TYPE(result)->tp_name)) {
Py_DECREF(result);
return NULL;
}
return result;
}
#endif
PyErr_Format(PyExc_TypeError,
"__%.4s__ returned non-%.4s (type %.200s)",
type_name, type_name, Py_TYPE(result)->tp_name);
Py_DECREF(result);
return NULL;
}
static CYTHON_INLINE PyObject* __Pyx_PyNumber_IntOrLong(PyObject* x) {
#if CYTHON_USE_TYPE_SLOTS
PyNumberMethods *m;
#endif
const char *name = NULL;
PyObject *res = NULL;
#if PY_MAJOR_VERSION < 3
if (likely(PyInt_Check(x) || PyLong_Check(x)))
#else
if (likely(PyLong_Check(x)))
#endif
return __Pyx_NewRef(x);
#if CYTHON_USE_TYPE_SLOTS
m = Py_TYPE(x)->tp_as_number;
#if PY_MAJOR_VERSION < 3
if (m && m->nb_int) {
name = "int";
res = m->nb_int(x);
}
else if (m && m->nb_long) {
name = "long";
res = m->nb_long(x);
}
#else
if (likely(m && m->nb_int)) {
name = "int";
res = m->nb_int(x);
}
#endif
#else
if (!PyBytes_CheckExact(x) && !PyUnicode_CheckExact(x)) {
res = PyNumber_Int(x);
}
#endif
if (likely(res)) {
#if PY_MAJOR_VERSION < 3
if (unlikely(!PyInt_Check(res) && !PyLong_Check(res))) {
#else
if (unlikely(!PyLong_CheckExact(res))) {
#endif
return __Pyx_PyNumber_IntOrLongWrongResultType(res, name);
}
}
else if (!PyErr_Occurred()) {
PyErr_SetString(PyExc_TypeError,
"an integer is required");
}
return res;
}
static CYTHON_INLINE Py_ssize_t __Pyx_PyIndex_AsSsize_t(PyObject* b) {
Py_ssize_t ival;
PyObject *x;
#if PY_MAJOR_VERSION < 3
if (likely(PyInt_CheckExact(b))) {
if (sizeof(Py_ssize_t) >= sizeof(long))
return PyInt_AS_LONG(b);
else
return PyInt_AsSsize_t(b);
}
#endif
if (likely(PyLong_CheckExact(b))) {
#if CYTHON_USE_PYLONG_INTERNALS
const digit* digits = ((PyLongObject*)b)->ob_digit;
const Py_ssize_t size = Py_SIZE(b);
if (likely(__Pyx_sst_abs(size) <= 1)) {
ival = likely(size) ? digits[0] : 0;
if (size == -1) ival = -ival;
return ival;
} else {
switch (size) {
case 2:
if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
return (Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
}
break;
case -2:
if (8 * sizeof(Py_ssize_t) > 2 * PyLong_SHIFT) {
return -(Py_ssize_t) (((((size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
}
break;
case 3:
if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
return (Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
}
break;
case -3:
if (8 * sizeof(Py_ssize_t) > 3 * PyLong_SHIFT) {
return -(Py_ssize_t) (((((((size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
}
break;
case 4:
if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
return (Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
}
break;
case -4:
if (8 * sizeof(Py_ssize_t) > 4 * PyLong_SHIFT) {
return -(Py_ssize_t) (((((((((size_t)digits[3]) << PyLong_SHIFT) | (size_t)digits[2]) << PyLong_SHIFT) | (size_t)digits[1]) << PyLong_SHIFT) | (size_t)digits[0]));
}
break;
}
}
#endif
return PyLong_AsSsize_t(b);
}
x = PyNumber_Index(b);
if (!x) return -1;
ival = PyInt_AsSsize_t(x);
Py_DECREF(x);
return ival;
}
static CYTHON_INLINE Py_hash_t __Pyx_PyIndex_AsHash_t(PyObject* o) {
if (sizeof(Py_hash_t) == sizeof(Py_ssize_t)) {
return (Py_hash_t) __Pyx_PyIndex_AsSsize_t(o);
#if PY_MAJOR_VERSION < 3
} else if (likely(PyInt_CheckExact(o))) {
return PyInt_AS_LONG(o);
#endif
} else {
Py_ssize_t ival;
PyObject *x;
x = PyNumber_Index(o);
if (!x) return -1;
ival = PyInt_AsLong(x);
Py_DECREF(x);
return ival;
}
}
static CYTHON_INLINE PyObject * __Pyx_PyBool_FromLong(long b) {
return b ? __Pyx_NewRef(Py_True) : __Pyx_NewRef(Py_False);
}
static CYTHON_INLINE PyObject * __Pyx_PyInt_FromSize_t(size_t ival) {
return PyInt_FromSize_t(ival);
}
#endif /* Py_PYTHON_H */
| 400,467 | C | 37.425254 | 310 | 0.588341 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/_build_tables.py | #-----------------------------------------------------------------
# pycparser: _build_tables.py
#
# A dummy for generating the lexing/parsing tables and and
# compiling them into .pyc for faster execution in optimized mode.
# Also generates AST code from the configuration file.
# Should be called from the pycparser directory.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#-----------------------------------------------------------------
# Insert '.' and '..' as first entries to the search path for modules.
# Restricted environments like embeddable python do not include the
# current working directory on startup.
import sys
sys.path[0:0] = ['.', '..']
# Generate c_ast.py
from _ast_gen import ASTCodeGenerator
ast_gen = ASTCodeGenerator('_c_ast.cfg')
ast_gen.generate(open('c_ast.py', 'w'))
from pycparser import c_parser
# Generates the tables
#
c_parser.CParser(
lex_optimize=True,
yacc_debug=False,
yacc_optimize=True)
# Load to compile into .pyc
#
import lextab
import yacctab
import c_ast
| 1,039 | Python | 26.36842 | 70 | 0.639076 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/_ast_gen.py | #-----------------------------------------------------------------
# _ast_gen.py
#
# Generates the AST Node classes from a specification given in
# a configuration file
#
# The design of this module was inspired by astgen.py from the
# Python 2.5 code-base.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#-----------------------------------------------------------------
from string import Template
class ASTCodeGenerator(object):
def __init__(self, cfg_filename='_c_ast.cfg'):
""" Initialize the code generator from a configuration
file.
"""
self.cfg_filename = cfg_filename
self.node_cfg = [NodeCfg(name, contents)
for (name, contents) in self.parse_cfgfile(cfg_filename)]
def generate(self, file=None):
""" Generates the code into file, an open file buffer.
"""
src = Template(_PROLOGUE_COMMENT).substitute(
cfg_filename=self.cfg_filename)
src += _PROLOGUE_CODE
for node_cfg in self.node_cfg:
src += node_cfg.generate_source() + '\n\n'
file.write(src)
def parse_cfgfile(self, filename):
""" Parse the configuration file and yield pairs of
(name, contents) for each node.
"""
with open(filename, "r") as f:
for line in f:
line = line.strip()
if not line or line.startswith('#'):
continue
colon_i = line.find(':')
lbracket_i = line.find('[')
rbracket_i = line.find(']')
if colon_i < 1 or lbracket_i <= colon_i or rbracket_i <= lbracket_i:
raise RuntimeError("Invalid line in %s:\n%s\n" % (filename, line))
name = line[:colon_i]
val = line[lbracket_i + 1:rbracket_i]
vallist = [v.strip() for v in val.split(',')] if val else []
yield name, vallist
class NodeCfg(object):
""" Node configuration.
name: node name
contents: a list of contents - attributes and child nodes
See comment at the top of the configuration file for details.
"""
def __init__(self, name, contents):
self.name = name
self.all_entries = []
self.attr = []
self.child = []
self.seq_child = []
for entry in contents:
clean_entry = entry.rstrip('*')
self.all_entries.append(clean_entry)
if entry.endswith('**'):
self.seq_child.append(clean_entry)
elif entry.endswith('*'):
self.child.append(clean_entry)
else:
self.attr.append(entry)
def generate_source(self):
src = self._gen_init()
src += '\n' + self._gen_children()
src += '\n' + self._gen_iter()
src += '\n' + self._gen_attr_names()
return src
def _gen_init(self):
src = "class %s(Node):\n" % self.name
if self.all_entries:
args = ', '.join(self.all_entries)
slots = ', '.join("'{0}'".format(e) for e in self.all_entries)
slots += ", 'coord', '__weakref__'"
arglist = '(self, %s, coord=None)' % args
else:
slots = "'coord', '__weakref__'"
arglist = '(self, coord=None)'
src += " __slots__ = (%s)\n" % slots
src += " def __init__%s:\n" % arglist
for name in self.all_entries + ['coord']:
src += " self.%s = %s\n" % (name, name)
return src
def _gen_children(self):
src = ' def children(self):\n'
if self.all_entries:
src += ' nodelist = []\n'
for child in self.child:
src += (
' if self.%(child)s is not None:' +
' nodelist.append(("%(child)s", self.%(child)s))\n') % (
dict(child=child))
for seq_child in self.seq_child:
src += (
' for i, child in enumerate(self.%(child)s or []):\n'
' nodelist.append(("%(child)s[%%d]" %% i, child))\n') % (
dict(child=seq_child))
src += ' return tuple(nodelist)\n'
else:
src += ' return ()\n'
return src
def _gen_iter(self):
src = ' def __iter__(self):\n'
if self.all_entries:
for child in self.child:
src += (
' if self.%(child)s is not None:\n' +
' yield self.%(child)s\n') % (dict(child=child))
for seq_child in self.seq_child:
src += (
' for child in (self.%(child)s or []):\n'
' yield child\n') % (dict(child=seq_child))
if not (self.child or self.seq_child):
# Empty generator
src += (
' return\n' +
' yield\n')
else:
# Empty generator
src += (
' return\n' +
' yield\n')
return src
def _gen_attr_names(self):
src = " attr_names = (" + ''.join("%r, " % nm for nm in self.attr) + ')'
return src
_PROLOGUE_COMMENT = \
r'''#-----------------------------------------------------------------
# ** ATTENTION **
# This code was automatically generated from the file:
# $cfg_filename
#
# Do not modify it directly. Modify the configuration file and
# run the generator again.
# ** ** *** ** **
#
# pycparser: c_ast.py
#
# AST Node classes.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#-----------------------------------------------------------------
'''
_PROLOGUE_CODE = r'''
import sys
def _repr(obj):
"""
Get the representation of an object, with dedicated pprint-like format for lists.
"""
if isinstance(obj, list):
return '[' + (',\n '.join((_repr(e).replace('\n', '\n ') for e in obj))) + '\n]'
else:
return repr(obj)
class Node(object):
__slots__ = ()
""" Abstract base class for AST nodes.
"""
def __repr__(self):
""" Generates a python representation of the current node
"""
result = self.__class__.__name__ + '('
indent = ''
separator = ''
for name in self.__slots__[:-2]:
result += separator
result += indent
result += name + '=' + (_repr(getattr(self, name)).replace('\n', '\n ' + (' ' * (len(name) + len(self.__class__.__name__)))))
separator = ','
indent = '\n ' + (' ' * len(self.__class__.__name__))
result += indent + ')'
return result
def children(self):
""" A sequence of all children that are Nodes
"""
pass
def show(self, buf=sys.stdout, offset=0, attrnames=False, nodenames=False, showcoord=False, _my_node_name=None):
""" Pretty print the Node and all its attributes and
children (recursively) to a buffer.
buf:
Open IO buffer into which the Node is printed.
offset:
Initial offset (amount of leading spaces)
attrnames:
True if you want to see the attribute names in
name=value pairs. False to only see the values.
nodenames:
True if you want to see the actual node names
within their parents.
showcoord:
Do you want the coordinates of each Node to be
displayed.
"""
lead = ' ' * offset
if nodenames and _my_node_name is not None:
buf.write(lead + self.__class__.__name__+ ' <' + _my_node_name + '>: ')
else:
buf.write(lead + self.__class__.__name__+ ': ')
if self.attr_names:
if attrnames:
nvlist = [(n, getattr(self,n)) for n in self.attr_names]
attrstr = ', '.join('%s=%s' % nv for nv in nvlist)
else:
vlist = [getattr(self, n) for n in self.attr_names]
attrstr = ', '.join('%s' % v for v in vlist)
buf.write(attrstr)
if showcoord:
buf.write(' (at %s)' % self.coord)
buf.write('\n')
for (child_name, child) in self.children():
child.show(
buf,
offset=offset + 2,
attrnames=attrnames,
nodenames=nodenames,
showcoord=showcoord,
_my_node_name=child_name)
class NodeVisitor(object):
""" A base NodeVisitor class for visiting c_ast nodes.
Subclass it and define your own visit_XXX methods, where
XXX is the class name you want to visit with these
methods.
For example:
class ConstantVisitor(NodeVisitor):
def __init__(self):
self.values = []
def visit_Constant(self, node):
self.values.append(node.value)
Creates a list of values of all the constant nodes
encountered below the given node. To use it:
cv = ConstantVisitor()
cv.visit(node)
Notes:
* generic_visit() will be called for AST nodes for which
no visit_XXX method was defined.
* The children of nodes for which a visit_XXX was
defined will not be visited - if you need this, call
generic_visit() on the node.
You can use:
NodeVisitor.generic_visit(self, node)
* Modeled after Python's own AST visiting facilities
(the ast module of Python 3.0)
"""
_method_cache = None
def visit(self, node):
""" Visit a node.
"""
if self._method_cache is None:
self._method_cache = {}
visitor = self._method_cache.get(node.__class__.__name__, None)
if visitor is None:
method = 'visit_' + node.__class__.__name__
visitor = getattr(self, method, self.generic_visit)
self._method_cache[node.__class__.__name__] = visitor
return visitor(node)
def generic_visit(self, node):
""" Called if no explicit visitor function exists for a
node. Implements preorder visiting of the node.
"""
for c in node:
self.visit(c)
'''
| 10,555 | Python | 30.323442 | 138 | 0.484889 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/c_ast.py | #-----------------------------------------------------------------
# ** ATTENTION **
# This code was automatically generated from the file:
# _c_ast.cfg
#
# Do not modify it directly. Modify the configuration file and
# run the generator again.
# ** ** *** ** **
#
# pycparser: c_ast.py
#
# AST Node classes.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#-----------------------------------------------------------------
import sys
def _repr(obj):
"""
Get the representation of an object, with dedicated pprint-like format for lists.
"""
if isinstance(obj, list):
return '[' + (',\n '.join((_repr(e).replace('\n', '\n ') for e in obj))) + '\n]'
else:
return repr(obj)
class Node(object):
__slots__ = ()
""" Abstract base class for AST nodes.
"""
def __repr__(self):
""" Generates a python representation of the current node
"""
result = self.__class__.__name__ + '('
indent = ''
separator = ''
for name in self.__slots__[:-2]:
result += separator
result += indent
result += name + '=' + (_repr(getattr(self, name)).replace('\n', '\n ' + (' ' * (len(name) + len(self.__class__.__name__)))))
separator = ','
indent = '\n ' + (' ' * len(self.__class__.__name__))
result += indent + ')'
return result
def children(self):
""" A sequence of all children that are Nodes
"""
pass
def show(self, buf=sys.stdout, offset=0, attrnames=False, nodenames=False, showcoord=False, _my_node_name=None):
""" Pretty print the Node and all its attributes and
children (recursively) to a buffer.
buf:
Open IO buffer into which the Node is printed.
offset:
Initial offset (amount of leading spaces)
attrnames:
True if you want to see the attribute names in
name=value pairs. False to only see the values.
nodenames:
True if you want to see the actual node names
within their parents.
showcoord:
Do you want the coordinates of each Node to be
displayed.
"""
lead = ' ' * offset
if nodenames and _my_node_name is not None:
buf.write(lead + self.__class__.__name__+ ' <' + _my_node_name + '>: ')
else:
buf.write(lead + self.__class__.__name__+ ': ')
if self.attr_names:
if attrnames:
nvlist = [(n, getattr(self,n)) for n in self.attr_names]
attrstr = ', '.join('%s=%s' % nv for nv in nvlist)
else:
vlist = [getattr(self, n) for n in self.attr_names]
attrstr = ', '.join('%s' % v for v in vlist)
buf.write(attrstr)
if showcoord:
buf.write(' (at %s)' % self.coord)
buf.write('\n')
for (child_name, child) in self.children():
child.show(
buf,
offset=offset + 2,
attrnames=attrnames,
nodenames=nodenames,
showcoord=showcoord,
_my_node_name=child_name)
class NodeVisitor(object):
""" A base NodeVisitor class for visiting c_ast nodes.
Subclass it and define your own visit_XXX methods, where
XXX is the class name you want to visit with these
methods.
For example:
class ConstantVisitor(NodeVisitor):
def __init__(self):
self.values = []
def visit_Constant(self, node):
self.values.append(node.value)
Creates a list of values of all the constant nodes
encountered below the given node. To use it:
cv = ConstantVisitor()
cv.visit(node)
Notes:
* generic_visit() will be called for AST nodes for which
no visit_XXX method was defined.
* The children of nodes for which a visit_XXX was
defined will not be visited - if you need this, call
generic_visit() on the node.
You can use:
NodeVisitor.generic_visit(self, node)
* Modeled after Python's own AST visiting facilities
(the ast module of Python 3.0)
"""
_method_cache = None
def visit(self, node):
""" Visit a node.
"""
if self._method_cache is None:
self._method_cache = {}
visitor = self._method_cache.get(node.__class__.__name__, None)
if visitor is None:
method = 'visit_' + node.__class__.__name__
visitor = getattr(self, method, self.generic_visit)
self._method_cache[node.__class__.__name__] = visitor
return visitor(node)
def generic_visit(self, node):
""" Called if no explicit visitor function exists for a
node. Implements preorder visiting of the node.
"""
for c in node:
self.visit(c)
class ArrayDecl(Node):
__slots__ = ('type', 'dim', 'dim_quals', 'coord', '__weakref__')
def __init__(self, type, dim, dim_quals, coord=None):
self.type = type
self.dim = dim
self.dim_quals = dim_quals
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
if self.dim is not None: nodelist.append(("dim", self.dim))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
if self.dim is not None:
yield self.dim
attr_names = ('dim_quals', )
class ArrayRef(Node):
__slots__ = ('name', 'subscript', 'coord', '__weakref__')
def __init__(self, name, subscript, coord=None):
self.name = name
self.subscript = subscript
self.coord = coord
def children(self):
nodelist = []
if self.name is not None: nodelist.append(("name", self.name))
if self.subscript is not None: nodelist.append(("subscript", self.subscript))
return tuple(nodelist)
def __iter__(self):
if self.name is not None:
yield self.name
if self.subscript is not None:
yield self.subscript
attr_names = ()
class Assignment(Node):
__slots__ = ('op', 'lvalue', 'rvalue', 'coord', '__weakref__')
def __init__(self, op, lvalue, rvalue, coord=None):
self.op = op
self.lvalue = lvalue
self.rvalue = rvalue
self.coord = coord
def children(self):
nodelist = []
if self.lvalue is not None: nodelist.append(("lvalue", self.lvalue))
if self.rvalue is not None: nodelist.append(("rvalue", self.rvalue))
return tuple(nodelist)
def __iter__(self):
if self.lvalue is not None:
yield self.lvalue
if self.rvalue is not None:
yield self.rvalue
attr_names = ('op', )
class Alignas(Node):
__slots__ = ('alignment', 'coord', '__weakref__')
def __init__(self, alignment, coord=None):
self.alignment = alignment
self.coord = coord
def children(self):
nodelist = []
if self.alignment is not None: nodelist.append(("alignment", self.alignment))
return tuple(nodelist)
def __iter__(self):
if self.alignment is not None:
yield self.alignment
attr_names = ()
class BinaryOp(Node):
__slots__ = ('op', 'left', 'right', 'coord', '__weakref__')
def __init__(self, op, left, right, coord=None):
self.op = op
self.left = left
self.right = right
self.coord = coord
def children(self):
nodelist = []
if self.left is not None: nodelist.append(("left", self.left))
if self.right is not None: nodelist.append(("right", self.right))
return tuple(nodelist)
def __iter__(self):
if self.left is not None:
yield self.left
if self.right is not None:
yield self.right
attr_names = ('op', )
class Break(Node):
__slots__ = ('coord', '__weakref__')
def __init__(self, coord=None):
self.coord = coord
def children(self):
return ()
def __iter__(self):
return
yield
attr_names = ()
class Case(Node):
__slots__ = ('expr', 'stmts', 'coord', '__weakref__')
def __init__(self, expr, stmts, coord=None):
self.expr = expr
self.stmts = stmts
self.coord = coord
def children(self):
nodelist = []
if self.expr is not None: nodelist.append(("expr", self.expr))
for i, child in enumerate(self.stmts or []):
nodelist.append(("stmts[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
if self.expr is not None:
yield self.expr
for child in (self.stmts or []):
yield child
attr_names = ()
class Cast(Node):
__slots__ = ('to_type', 'expr', 'coord', '__weakref__')
def __init__(self, to_type, expr, coord=None):
self.to_type = to_type
self.expr = expr
self.coord = coord
def children(self):
nodelist = []
if self.to_type is not None: nodelist.append(("to_type", self.to_type))
if self.expr is not None: nodelist.append(("expr", self.expr))
return tuple(nodelist)
def __iter__(self):
if self.to_type is not None:
yield self.to_type
if self.expr is not None:
yield self.expr
attr_names = ()
class Compound(Node):
__slots__ = ('block_items', 'coord', '__weakref__')
def __init__(self, block_items, coord=None):
self.block_items = block_items
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.block_items or []):
nodelist.append(("block_items[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.block_items or []):
yield child
attr_names = ()
class CompoundLiteral(Node):
__slots__ = ('type', 'init', 'coord', '__weakref__')
def __init__(self, type, init, coord=None):
self.type = type
self.init = init
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
if self.init is not None: nodelist.append(("init", self.init))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
if self.init is not None:
yield self.init
attr_names = ()
class Constant(Node):
__slots__ = ('type', 'value', 'coord', '__weakref__')
def __init__(self, type, value, coord=None):
self.type = type
self.value = value
self.coord = coord
def children(self):
nodelist = []
return tuple(nodelist)
def __iter__(self):
return
yield
attr_names = ('type', 'value', )
class Continue(Node):
__slots__ = ('coord', '__weakref__')
def __init__(self, coord=None):
self.coord = coord
def children(self):
return ()
def __iter__(self):
return
yield
attr_names = ()
class Decl(Node):
__slots__ = ('name', 'quals', 'align', 'storage', 'funcspec', 'type', 'init', 'bitsize', 'coord', '__weakref__')
def __init__(self, name, quals, align, storage, funcspec, type, init, bitsize, coord=None):
self.name = name
self.quals = quals
self.align = align
self.storage = storage
self.funcspec = funcspec
self.type = type
self.init = init
self.bitsize = bitsize
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
if self.init is not None: nodelist.append(("init", self.init))
if self.bitsize is not None: nodelist.append(("bitsize", self.bitsize))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
if self.init is not None:
yield self.init
if self.bitsize is not None:
yield self.bitsize
attr_names = ('name', 'quals', 'align', 'storage', 'funcspec', )
class DeclList(Node):
__slots__ = ('decls', 'coord', '__weakref__')
def __init__(self, decls, coord=None):
self.decls = decls
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.decls or []):
nodelist.append(("decls[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.decls or []):
yield child
attr_names = ()
class Default(Node):
__slots__ = ('stmts', 'coord', '__weakref__')
def __init__(self, stmts, coord=None):
self.stmts = stmts
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.stmts or []):
nodelist.append(("stmts[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.stmts or []):
yield child
attr_names = ()
class DoWhile(Node):
__slots__ = ('cond', 'stmt', 'coord', '__weakref__')
def __init__(self, cond, stmt, coord=None):
self.cond = cond
self.stmt = stmt
self.coord = coord
def children(self):
nodelist = []
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.stmt is not None: nodelist.append(("stmt", self.stmt))
return tuple(nodelist)
def __iter__(self):
if self.cond is not None:
yield self.cond
if self.stmt is not None:
yield self.stmt
attr_names = ()
class EllipsisParam(Node):
__slots__ = ('coord', '__weakref__')
def __init__(self, coord=None):
self.coord = coord
def children(self):
return ()
def __iter__(self):
return
yield
attr_names = ()
class EmptyStatement(Node):
__slots__ = ('coord', '__weakref__')
def __init__(self, coord=None):
self.coord = coord
def children(self):
return ()
def __iter__(self):
return
yield
attr_names = ()
class Enum(Node):
__slots__ = ('name', 'values', 'coord', '__weakref__')
def __init__(self, name, values, coord=None):
self.name = name
self.values = values
self.coord = coord
def children(self):
nodelist = []
if self.values is not None: nodelist.append(("values", self.values))
return tuple(nodelist)
def __iter__(self):
if self.values is not None:
yield self.values
attr_names = ('name', )
class Enumerator(Node):
__slots__ = ('name', 'value', 'coord', '__weakref__')
def __init__(self, name, value, coord=None):
self.name = name
self.value = value
self.coord = coord
def children(self):
nodelist = []
if self.value is not None: nodelist.append(("value", self.value))
return tuple(nodelist)
def __iter__(self):
if self.value is not None:
yield self.value
attr_names = ('name', )
class EnumeratorList(Node):
__slots__ = ('enumerators', 'coord', '__weakref__')
def __init__(self, enumerators, coord=None):
self.enumerators = enumerators
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.enumerators or []):
nodelist.append(("enumerators[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.enumerators or []):
yield child
attr_names = ()
class ExprList(Node):
__slots__ = ('exprs', 'coord', '__weakref__')
def __init__(self, exprs, coord=None):
self.exprs = exprs
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.exprs or []):
nodelist.append(("exprs[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.exprs or []):
yield child
attr_names = ()
class FileAST(Node):
__slots__ = ('ext', 'coord', '__weakref__')
def __init__(self, ext, coord=None):
self.ext = ext
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.ext or []):
nodelist.append(("ext[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.ext or []):
yield child
attr_names = ()
class For(Node):
__slots__ = ('init', 'cond', 'next', 'stmt', 'coord', '__weakref__')
def __init__(self, init, cond, next, stmt, coord=None):
self.init = init
self.cond = cond
self.next = next
self.stmt = stmt
self.coord = coord
def children(self):
nodelist = []
if self.init is not None: nodelist.append(("init", self.init))
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.next is not None: nodelist.append(("next", self.next))
if self.stmt is not None: nodelist.append(("stmt", self.stmt))
return tuple(nodelist)
def __iter__(self):
if self.init is not None:
yield self.init
if self.cond is not None:
yield self.cond
if self.next is not None:
yield self.next
if self.stmt is not None:
yield self.stmt
attr_names = ()
class FuncCall(Node):
__slots__ = ('name', 'args', 'coord', '__weakref__')
def __init__(self, name, args, coord=None):
self.name = name
self.args = args
self.coord = coord
def children(self):
nodelist = []
if self.name is not None: nodelist.append(("name", self.name))
if self.args is not None: nodelist.append(("args", self.args))
return tuple(nodelist)
def __iter__(self):
if self.name is not None:
yield self.name
if self.args is not None:
yield self.args
attr_names = ()
class FuncDecl(Node):
__slots__ = ('args', 'type', 'coord', '__weakref__')
def __init__(self, args, type, coord=None):
self.args = args
self.type = type
self.coord = coord
def children(self):
nodelist = []
if self.args is not None: nodelist.append(("args", self.args))
if self.type is not None: nodelist.append(("type", self.type))
return tuple(nodelist)
def __iter__(self):
if self.args is not None:
yield self.args
if self.type is not None:
yield self.type
attr_names = ()
class FuncDef(Node):
__slots__ = ('decl', 'param_decls', 'body', 'coord', '__weakref__')
def __init__(self, decl, param_decls, body, coord=None):
self.decl = decl
self.param_decls = param_decls
self.body = body
self.coord = coord
def children(self):
nodelist = []
if self.decl is not None: nodelist.append(("decl", self.decl))
if self.body is not None: nodelist.append(("body", self.body))
for i, child in enumerate(self.param_decls or []):
nodelist.append(("param_decls[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
if self.decl is not None:
yield self.decl
if self.body is not None:
yield self.body
for child in (self.param_decls or []):
yield child
attr_names = ()
class Goto(Node):
__slots__ = ('name', 'coord', '__weakref__')
def __init__(self, name, coord=None):
self.name = name
self.coord = coord
def children(self):
nodelist = []
return tuple(nodelist)
def __iter__(self):
return
yield
attr_names = ('name', )
class ID(Node):
__slots__ = ('name', 'coord', '__weakref__')
def __init__(self, name, coord=None):
self.name = name
self.coord = coord
def children(self):
nodelist = []
return tuple(nodelist)
def __iter__(self):
return
yield
attr_names = ('name', )
class IdentifierType(Node):
__slots__ = ('names', 'coord', '__weakref__')
def __init__(self, names, coord=None):
self.names = names
self.coord = coord
def children(self):
nodelist = []
return tuple(nodelist)
def __iter__(self):
return
yield
attr_names = ('names', )
class If(Node):
__slots__ = ('cond', 'iftrue', 'iffalse', 'coord', '__weakref__')
def __init__(self, cond, iftrue, iffalse, coord=None):
self.cond = cond
self.iftrue = iftrue
self.iffalse = iffalse
self.coord = coord
def children(self):
nodelist = []
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.iftrue is not None: nodelist.append(("iftrue", self.iftrue))
if self.iffalse is not None: nodelist.append(("iffalse", self.iffalse))
return tuple(nodelist)
def __iter__(self):
if self.cond is not None:
yield self.cond
if self.iftrue is not None:
yield self.iftrue
if self.iffalse is not None:
yield self.iffalse
attr_names = ()
class InitList(Node):
__slots__ = ('exprs', 'coord', '__weakref__')
def __init__(self, exprs, coord=None):
self.exprs = exprs
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.exprs or []):
nodelist.append(("exprs[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.exprs or []):
yield child
attr_names = ()
class Label(Node):
__slots__ = ('name', 'stmt', 'coord', '__weakref__')
def __init__(self, name, stmt, coord=None):
self.name = name
self.stmt = stmt
self.coord = coord
def children(self):
nodelist = []
if self.stmt is not None: nodelist.append(("stmt", self.stmt))
return tuple(nodelist)
def __iter__(self):
if self.stmt is not None:
yield self.stmt
attr_names = ('name', )
class NamedInitializer(Node):
__slots__ = ('name', 'expr', 'coord', '__weakref__')
def __init__(self, name, expr, coord=None):
self.name = name
self.expr = expr
self.coord = coord
def children(self):
nodelist = []
if self.expr is not None: nodelist.append(("expr", self.expr))
for i, child in enumerate(self.name or []):
nodelist.append(("name[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
if self.expr is not None:
yield self.expr
for child in (self.name or []):
yield child
attr_names = ()
class ParamList(Node):
__slots__ = ('params', 'coord', '__weakref__')
def __init__(self, params, coord=None):
self.params = params
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.params or []):
nodelist.append(("params[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.params or []):
yield child
attr_names = ()
class PtrDecl(Node):
__slots__ = ('quals', 'type', 'coord', '__weakref__')
def __init__(self, quals, type, coord=None):
self.quals = quals
self.type = type
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
attr_names = ('quals', )
class Return(Node):
__slots__ = ('expr', 'coord', '__weakref__')
def __init__(self, expr, coord=None):
self.expr = expr
self.coord = coord
def children(self):
nodelist = []
if self.expr is not None: nodelist.append(("expr", self.expr))
return tuple(nodelist)
def __iter__(self):
if self.expr is not None:
yield self.expr
attr_names = ()
class StaticAssert(Node):
__slots__ = ('cond', 'message', 'coord', '__weakref__')
def __init__(self, cond, message, coord=None):
self.cond = cond
self.message = message
self.coord = coord
def children(self):
nodelist = []
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.message is not None: nodelist.append(("message", self.message))
return tuple(nodelist)
def __iter__(self):
if self.cond is not None:
yield self.cond
if self.message is not None:
yield self.message
attr_names = ()
class Struct(Node):
__slots__ = ('name', 'decls', 'coord', '__weakref__')
def __init__(self, name, decls, coord=None):
self.name = name
self.decls = decls
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.decls or []):
nodelist.append(("decls[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.decls or []):
yield child
attr_names = ('name', )
class StructRef(Node):
__slots__ = ('name', 'type', 'field', 'coord', '__weakref__')
def __init__(self, name, type, field, coord=None):
self.name = name
self.type = type
self.field = field
self.coord = coord
def children(self):
nodelist = []
if self.name is not None: nodelist.append(("name", self.name))
if self.field is not None: nodelist.append(("field", self.field))
return tuple(nodelist)
def __iter__(self):
if self.name is not None:
yield self.name
if self.field is not None:
yield self.field
attr_names = ('type', )
class Switch(Node):
__slots__ = ('cond', 'stmt', 'coord', '__weakref__')
def __init__(self, cond, stmt, coord=None):
self.cond = cond
self.stmt = stmt
self.coord = coord
def children(self):
nodelist = []
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.stmt is not None: nodelist.append(("stmt", self.stmt))
return tuple(nodelist)
def __iter__(self):
if self.cond is not None:
yield self.cond
if self.stmt is not None:
yield self.stmt
attr_names = ()
class TernaryOp(Node):
__slots__ = ('cond', 'iftrue', 'iffalse', 'coord', '__weakref__')
def __init__(self, cond, iftrue, iffalse, coord=None):
self.cond = cond
self.iftrue = iftrue
self.iffalse = iffalse
self.coord = coord
def children(self):
nodelist = []
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.iftrue is not None: nodelist.append(("iftrue", self.iftrue))
if self.iffalse is not None: nodelist.append(("iffalse", self.iffalse))
return tuple(nodelist)
def __iter__(self):
if self.cond is not None:
yield self.cond
if self.iftrue is not None:
yield self.iftrue
if self.iffalse is not None:
yield self.iffalse
attr_names = ()
class TypeDecl(Node):
__slots__ = ('declname', 'quals', 'align', 'type', 'coord', '__weakref__')
def __init__(self, declname, quals, align, type, coord=None):
self.declname = declname
self.quals = quals
self.align = align
self.type = type
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
attr_names = ('declname', 'quals', 'align', )
class Typedef(Node):
__slots__ = ('name', 'quals', 'storage', 'type', 'coord', '__weakref__')
def __init__(self, name, quals, storage, type, coord=None):
self.name = name
self.quals = quals
self.storage = storage
self.type = type
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
attr_names = ('name', 'quals', 'storage', )
class Typename(Node):
__slots__ = ('name', 'quals', 'align', 'type', 'coord', '__weakref__')
def __init__(self, name, quals, align, type, coord=None):
self.name = name
self.quals = quals
self.align = align
self.type = type
self.coord = coord
def children(self):
nodelist = []
if self.type is not None: nodelist.append(("type", self.type))
return tuple(nodelist)
def __iter__(self):
if self.type is not None:
yield self.type
attr_names = ('name', 'quals', 'align', )
class UnaryOp(Node):
__slots__ = ('op', 'expr', 'coord', '__weakref__')
def __init__(self, op, expr, coord=None):
self.op = op
self.expr = expr
self.coord = coord
def children(self):
nodelist = []
if self.expr is not None: nodelist.append(("expr", self.expr))
return tuple(nodelist)
def __iter__(self):
if self.expr is not None:
yield self.expr
attr_names = ('op', )
class Union(Node):
__slots__ = ('name', 'decls', 'coord', '__weakref__')
def __init__(self, name, decls, coord=None):
self.name = name
self.decls = decls
self.coord = coord
def children(self):
nodelist = []
for i, child in enumerate(self.decls or []):
nodelist.append(("decls[%d]" % i, child))
return tuple(nodelist)
def __iter__(self):
for child in (self.decls or []):
yield child
attr_names = ('name', )
class While(Node):
__slots__ = ('cond', 'stmt', 'coord', '__weakref__')
def __init__(self, cond, stmt, coord=None):
self.cond = cond
self.stmt = stmt
self.coord = coord
def children(self):
nodelist = []
if self.cond is not None: nodelist.append(("cond", self.cond))
if self.stmt is not None: nodelist.append(("stmt", self.stmt))
return tuple(nodelist)
def __iter__(self):
if self.cond is not None:
yield self.cond
if self.stmt is not None:
yield self.stmt
attr_names = ()
class Pragma(Node):
__slots__ = ('string', 'coord', '__weakref__')
def __init__(self, string, coord=None):
self.string = string
self.coord = coord
def children(self):
nodelist = []
return tuple(nodelist)
def __iter__(self):
return
yield
attr_names = ('string', )
| 31,445 | Python | 26.927176 | 138 | 0.536747 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/__init__.py | #-----------------------------------------------------------------
# pycparser: __init__.py
#
# This package file exports some convenience functions for
# interacting with pycparser
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#-----------------------------------------------------------------
__all__ = ['c_lexer', 'c_parser', 'c_ast']
__version__ = '2.21'
import io
from subprocess import check_output
from .c_parser import CParser
def preprocess_file(filename, cpp_path='cpp', cpp_args=''):
""" Preprocess a file using cpp.
filename:
Name of the file you want to preprocess.
cpp_path:
cpp_args:
Refer to the documentation of parse_file for the meaning of these
arguments.
When successful, returns the preprocessed file's contents.
Errors from cpp will be printed out.
"""
path_list = [cpp_path]
if isinstance(cpp_args, list):
path_list += cpp_args
elif cpp_args != '':
path_list += [cpp_args]
path_list += [filename]
try:
# Note the use of universal_newlines to treat all newlines
# as \n for Python's purpose
text = check_output(path_list, universal_newlines=True)
except OSError as e:
raise RuntimeError("Unable to invoke 'cpp'. " +
'Make sure its path was passed correctly\n' +
('Original error: %s' % e))
return text
def parse_file(filename, use_cpp=False, cpp_path='cpp', cpp_args='',
parser=None):
""" Parse a C file using pycparser.
filename:
Name of the file you want to parse.
use_cpp:
Set to True if you want to execute the C pre-processor
on the file prior to parsing it.
cpp_path:
If use_cpp is True, this is the path to 'cpp' on your
system. If no path is provided, it attempts to just
execute 'cpp', so it must be in your PATH.
cpp_args:
If use_cpp is True, set this to the command line arguments strings
to cpp. Be careful with quotes - it's best to pass a raw string
(r'') here. For example:
r'-I../utils/fake_libc_include'
If several arguments are required, pass a list of strings.
parser:
Optional parser object to be used instead of the default CParser
When successful, an AST is returned. ParseError can be
thrown if the file doesn't parse successfully.
Errors from cpp will be printed out.
"""
if use_cpp:
text = preprocess_file(filename, cpp_path, cpp_args)
else:
with io.open(filename) as f:
text = f.read()
if parser is None:
parser = CParser()
return parser.parse(text, filename)
| 2,815 | Python | 29.945055 | 78 | 0.572647 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/c_lexer.py | #------------------------------------------------------------------------------
# pycparser: c_lexer.py
#
# CLexer class: lexer for the C language
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#------------------------------------------------------------------------------
import re
from .ply import lex
from .ply.lex import TOKEN
class CLexer(object):
""" A lexer for the C language. After building it, set the
input text with input(), and call token() to get new
tokens.
The public attribute filename can be set to an initial
filename, but the lexer will update it upon #line
directives.
"""
def __init__(self, error_func, on_lbrace_func, on_rbrace_func,
type_lookup_func):
""" Create a new Lexer.
error_func:
An error function. Will be called with an error
message, line and column as arguments, in case of
an error during lexing.
on_lbrace_func, on_rbrace_func:
Called when an LBRACE or RBRACE is encountered
(likely to push/pop type_lookup_func's scope)
type_lookup_func:
A type lookup function. Given a string, it must
return True IFF this string is a name of a type
that was defined with a typedef earlier.
"""
self.error_func = error_func
self.on_lbrace_func = on_lbrace_func
self.on_rbrace_func = on_rbrace_func
self.type_lookup_func = type_lookup_func
self.filename = ''
# Keeps track of the last token returned from self.token()
self.last_token = None
# Allow either "# line" or "# <num>" to support GCC's
# cpp output
#
self.line_pattern = re.compile(r'([ \t]*line\W)|([ \t]*\d+)')
self.pragma_pattern = re.compile(r'[ \t]*pragma\W')
def build(self, **kwargs):
""" Builds the lexer from the specification. Must be
called after the lexer object is created.
This method exists separately, because the PLY
manual warns against calling lex.lex inside
__init__
"""
self.lexer = lex.lex(object=self, **kwargs)
def reset_lineno(self):
""" Resets the internal line number counter of the lexer.
"""
self.lexer.lineno = 1
def input(self, text):
self.lexer.input(text)
def token(self):
self.last_token = self.lexer.token()
return self.last_token
def find_tok_column(self, token):
""" Find the column of the token in its line.
"""
last_cr = self.lexer.lexdata.rfind('\n', 0, token.lexpos)
return token.lexpos - last_cr
######################-- PRIVATE --######################
##
## Internal auxiliary methods
##
def _error(self, msg, token):
location = self._make_tok_location(token)
self.error_func(msg, location[0], location[1])
self.lexer.skip(1)
def _make_tok_location(self, token):
return (token.lineno, self.find_tok_column(token))
##
## Reserved keywords
##
keywords = (
'AUTO', 'BREAK', 'CASE', 'CHAR', 'CONST',
'CONTINUE', 'DEFAULT', 'DO', 'DOUBLE', 'ELSE', 'ENUM', 'EXTERN',
'FLOAT', 'FOR', 'GOTO', 'IF', 'INLINE', 'INT', 'LONG',
'REGISTER', 'OFFSETOF',
'RESTRICT', 'RETURN', 'SHORT', 'SIGNED', 'SIZEOF', 'STATIC', 'STRUCT',
'SWITCH', 'TYPEDEF', 'UNION', 'UNSIGNED', 'VOID',
'VOLATILE', 'WHILE', '__INT128',
)
keywords_new = (
'_BOOL', '_COMPLEX',
'_NORETURN', '_THREAD_LOCAL', '_STATIC_ASSERT',
'_ATOMIC', '_ALIGNOF', '_ALIGNAS',
)
keyword_map = {}
for keyword in keywords:
keyword_map[keyword.lower()] = keyword
for keyword in keywords_new:
keyword_map[keyword[:2].upper() + keyword[2:].lower()] = keyword
##
## All the tokens recognized by the lexer
##
tokens = keywords + keywords_new + (
# Identifiers
'ID',
# Type identifiers (identifiers previously defined as
# types with typedef)
'TYPEID',
# constants
'INT_CONST_DEC', 'INT_CONST_OCT', 'INT_CONST_HEX', 'INT_CONST_BIN', 'INT_CONST_CHAR',
'FLOAT_CONST', 'HEX_FLOAT_CONST',
'CHAR_CONST',
'WCHAR_CONST',
'U8CHAR_CONST',
'U16CHAR_CONST',
'U32CHAR_CONST',
# String literals
'STRING_LITERAL',
'WSTRING_LITERAL',
'U8STRING_LITERAL',
'U16STRING_LITERAL',
'U32STRING_LITERAL',
# Operators
'PLUS', 'MINUS', 'TIMES', 'DIVIDE', 'MOD',
'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
'LOR', 'LAND', 'LNOT',
'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
# Assignment
'EQUALS', 'TIMESEQUAL', 'DIVEQUAL', 'MODEQUAL',
'PLUSEQUAL', 'MINUSEQUAL',
'LSHIFTEQUAL','RSHIFTEQUAL', 'ANDEQUAL', 'XOREQUAL',
'OREQUAL',
# Increment/decrement
'PLUSPLUS', 'MINUSMINUS',
# Structure dereference (->)
'ARROW',
# Conditional operator (?)
'CONDOP',
# Delimiters
'LPAREN', 'RPAREN', # ( )
'LBRACKET', 'RBRACKET', # [ ]
'LBRACE', 'RBRACE', # { }
'COMMA', 'PERIOD', # . ,
'SEMI', 'COLON', # ; :
# Ellipsis (...)
'ELLIPSIS',
# pre-processor
'PPHASH', # '#'
'PPPRAGMA', # 'pragma'
'PPPRAGMASTR',
)
##
## Regexes for use in tokens
##
##
# valid C identifiers (K&R2: A.2.3), plus '$' (supported by some compilers)
identifier = r'[a-zA-Z_$][0-9a-zA-Z_$]*'
hex_prefix = '0[xX]'
hex_digits = '[0-9a-fA-F]+'
bin_prefix = '0[bB]'
bin_digits = '[01]+'
# integer constants (K&R2: A.2.5.1)
integer_suffix_opt = r'(([uU]ll)|([uU]LL)|(ll[uU]?)|(LL[uU]?)|([uU][lL])|([lL][uU]?)|[uU])?'
decimal_constant = '(0'+integer_suffix_opt+')|([1-9][0-9]*'+integer_suffix_opt+')'
octal_constant = '0[0-7]*'+integer_suffix_opt
hex_constant = hex_prefix+hex_digits+integer_suffix_opt
bin_constant = bin_prefix+bin_digits+integer_suffix_opt
bad_octal_constant = '0[0-7]*[89]'
# character constants (K&R2: A.2.5.2)
# Note: a-zA-Z and '.-~^_!=&;,' are allowed as escape chars to support #line
# directives with Windows paths as filenames (..\..\dir\file)
# For the same reason, decimal_escape allows all digit sequences. We want to
# parse all correct code, even if it means to sometimes parse incorrect
# code.
#
# The original regexes were taken verbatim from the C syntax definition,
# and were later modified to avoid worst-case exponential running time.
#
# simple_escape = r"""([a-zA-Z._~!=&\^\-\\?'"])"""
# decimal_escape = r"""(\d+)"""
# hex_escape = r"""(x[0-9a-fA-F]+)"""
# bad_escape = r"""([\\][^a-zA-Z._~^!=&\^\-\\?'"x0-7])"""
#
# The following modifications were made to avoid the ambiguity that allowed backtracking:
# (https://github.com/eliben/pycparser/issues/61)
#
# - \x was removed from simple_escape, unless it was not followed by a hex digit, to avoid ambiguity with hex_escape.
# - hex_escape allows one or more hex characters, but requires that the next character(if any) is not hex
# - decimal_escape allows one or more decimal characters, but requires that the next character(if any) is not a decimal
# - bad_escape does not allow any decimals (8-9), to avoid conflicting with the permissive decimal_escape.
#
# Without this change, python's `re` module would recursively try parsing each ambiguous escape sequence in multiple ways.
# e.g. `\123` could be parsed as `\1`+`23`, `\12`+`3`, and `\123`.
simple_escape = r"""([a-wyzA-Z._~!=&\^\-\\?'"]|x(?![0-9a-fA-F]))"""
decimal_escape = r"""(\d+)(?!\d)"""
hex_escape = r"""(x[0-9a-fA-F]+)(?![0-9a-fA-F])"""
bad_escape = r"""([\\][^a-zA-Z._~^!=&\^\-\\?'"x0-9])"""
escape_sequence = r"""(\\("""+simple_escape+'|'+decimal_escape+'|'+hex_escape+'))'
# This complicated regex with lookahead might be slow for strings, so because all of the valid escapes (including \x) allowed
# 0 or more non-escaped characters after the first character, simple_escape+decimal_escape+hex_escape got simplified to
escape_sequence_start_in_string = r"""(\\[0-9a-zA-Z._~!=&\^\-\\?'"])"""
cconst_char = r"""([^'\\\n]|"""+escape_sequence+')'
char_const = "'"+cconst_char+"'"
wchar_const = 'L'+char_const
u8char_const = 'u8'+char_const
u16char_const = 'u'+char_const
u32char_const = 'U'+char_const
multicharacter_constant = "'"+cconst_char+"{2,4}'"
unmatched_quote = "('"+cconst_char+"*\\n)|('"+cconst_char+"*$)"
bad_char_const = r"""('"""+cconst_char+"""[^'\n]+')|('')|('"""+bad_escape+r"""[^'\n]*')"""
# string literals (K&R2: A.2.6)
string_char = r"""([^"\\\n]|"""+escape_sequence_start_in_string+')'
string_literal = '"'+string_char+'*"'
wstring_literal = 'L'+string_literal
u8string_literal = 'u8'+string_literal
u16string_literal = 'u'+string_literal
u32string_literal = 'U'+string_literal
bad_string_literal = '"'+string_char+'*'+bad_escape+string_char+'*"'
# floating constants (K&R2: A.2.5.3)
exponent_part = r"""([eE][-+]?[0-9]+)"""
fractional_constant = r"""([0-9]*\.[0-9]+)|([0-9]+\.)"""
floating_constant = '(((('+fractional_constant+')'+exponent_part+'?)|([0-9]+'+exponent_part+'))[FfLl]?)'
binary_exponent_part = r'''([pP][+-]?[0-9]+)'''
hex_fractional_constant = '((('+hex_digits+r""")?\."""+hex_digits+')|('+hex_digits+r"""\.))"""
hex_floating_constant = '('+hex_prefix+'('+hex_digits+'|'+hex_fractional_constant+')'+binary_exponent_part+'[FfLl]?)'
##
## Lexer states: used for preprocessor \n-terminated directives
##
states = (
# ppline: preprocessor line directives
#
('ppline', 'exclusive'),
# pppragma: pragma
#
('pppragma', 'exclusive'),
)
def t_PPHASH(self, t):
r'[ \t]*\#'
if self.line_pattern.match(t.lexer.lexdata, pos=t.lexer.lexpos):
t.lexer.begin('ppline')
self.pp_line = self.pp_filename = None
elif self.pragma_pattern.match(t.lexer.lexdata, pos=t.lexer.lexpos):
t.lexer.begin('pppragma')
else:
t.type = 'PPHASH'
return t
##
## Rules for the ppline state
##
@TOKEN(string_literal)
def t_ppline_FILENAME(self, t):
if self.pp_line is None:
self._error('filename before line number in #line', t)
else:
self.pp_filename = t.value.lstrip('"').rstrip('"')
@TOKEN(decimal_constant)
def t_ppline_LINE_NUMBER(self, t):
if self.pp_line is None:
self.pp_line = t.value
else:
# Ignore: GCC's cpp sometimes inserts a numeric flag
# after the file name
pass
def t_ppline_NEWLINE(self, t):
r'\n'
if self.pp_line is None:
self._error('line number missing in #line', t)
else:
self.lexer.lineno = int(self.pp_line)
if self.pp_filename is not None:
self.filename = self.pp_filename
t.lexer.begin('INITIAL')
def t_ppline_PPLINE(self, t):
r'line'
pass
t_ppline_ignore = ' \t'
def t_ppline_error(self, t):
self._error('invalid #line directive', t)
##
## Rules for the pppragma state
##
def t_pppragma_NEWLINE(self, t):
r'\n'
t.lexer.lineno += 1
t.lexer.begin('INITIAL')
def t_pppragma_PPPRAGMA(self, t):
r'pragma'
return t
t_pppragma_ignore = ' \t'
def t_pppragma_STR(self, t):
'.+'
t.type = 'PPPRAGMASTR'
return t
def t_pppragma_error(self, t):
self._error('invalid #pragma directive', t)
##
## Rules for the normal state
##
t_ignore = ' \t'
# Newlines
def t_NEWLINE(self, t):
r'\n+'
t.lexer.lineno += t.value.count("\n")
# Operators
t_PLUS = r'\+'
t_MINUS = r'-'
t_TIMES = r'\*'
t_DIVIDE = r'/'
t_MOD = r'%'
t_OR = r'\|'
t_AND = r'&'
t_NOT = r'~'
t_XOR = r'\^'
t_LSHIFT = r'<<'
t_RSHIFT = r'>>'
t_LOR = r'\|\|'
t_LAND = r'&&'
t_LNOT = r'!'
t_LT = r'<'
t_GT = r'>'
t_LE = r'<='
t_GE = r'>='
t_EQ = r'=='
t_NE = r'!='
# Assignment operators
t_EQUALS = r'='
t_TIMESEQUAL = r'\*='
t_DIVEQUAL = r'/='
t_MODEQUAL = r'%='
t_PLUSEQUAL = r'\+='
t_MINUSEQUAL = r'-='
t_LSHIFTEQUAL = r'<<='
t_RSHIFTEQUAL = r'>>='
t_ANDEQUAL = r'&='
t_OREQUAL = r'\|='
t_XOREQUAL = r'\^='
# Increment/decrement
t_PLUSPLUS = r'\+\+'
t_MINUSMINUS = r'--'
# ->
t_ARROW = r'->'
# ?
t_CONDOP = r'\?'
# Delimiters
t_LPAREN = r'\('
t_RPAREN = r'\)'
t_LBRACKET = r'\['
t_RBRACKET = r'\]'
t_COMMA = r','
t_PERIOD = r'\.'
t_SEMI = r';'
t_COLON = r':'
t_ELLIPSIS = r'\.\.\.'
# Scope delimiters
# To see why on_lbrace_func is needed, consider:
# typedef char TT;
# void foo(int TT) { TT = 10; }
# TT x = 5;
# Outside the function, TT is a typedef, but inside (starting and ending
# with the braces) it's a parameter. The trouble begins with yacc's
# lookahead token. If we open a new scope in brace_open, then TT has
# already been read and incorrectly interpreted as TYPEID. So, we need
# to open and close scopes from within the lexer.
# Similar for the TT immediately outside the end of the function.
#
@TOKEN(r'\{')
def t_LBRACE(self, t):
self.on_lbrace_func()
return t
@TOKEN(r'\}')
def t_RBRACE(self, t):
self.on_rbrace_func()
return t
t_STRING_LITERAL = string_literal
# The following floating and integer constants are defined as
# functions to impose a strict order (otherwise, decimal
# is placed before the others because its regex is longer,
# and this is bad)
#
@TOKEN(floating_constant)
def t_FLOAT_CONST(self, t):
return t
@TOKEN(hex_floating_constant)
def t_HEX_FLOAT_CONST(self, t):
return t
@TOKEN(hex_constant)
def t_INT_CONST_HEX(self, t):
return t
@TOKEN(bin_constant)
def t_INT_CONST_BIN(self, t):
return t
@TOKEN(bad_octal_constant)
def t_BAD_CONST_OCT(self, t):
msg = "Invalid octal constant"
self._error(msg, t)
@TOKEN(octal_constant)
def t_INT_CONST_OCT(self, t):
return t
@TOKEN(decimal_constant)
def t_INT_CONST_DEC(self, t):
return t
# Must come before bad_char_const, to prevent it from
# catching valid char constants as invalid
#
@TOKEN(multicharacter_constant)
def t_INT_CONST_CHAR(self, t):
return t
@TOKEN(char_const)
def t_CHAR_CONST(self, t):
return t
@TOKEN(wchar_const)
def t_WCHAR_CONST(self, t):
return t
@TOKEN(u8char_const)
def t_U8CHAR_CONST(self, t):
return t
@TOKEN(u16char_const)
def t_U16CHAR_CONST(self, t):
return t
@TOKEN(u32char_const)
def t_U32CHAR_CONST(self, t):
return t
@TOKEN(unmatched_quote)
def t_UNMATCHED_QUOTE(self, t):
msg = "Unmatched '"
self._error(msg, t)
@TOKEN(bad_char_const)
def t_BAD_CHAR_CONST(self, t):
msg = "Invalid char constant %s" % t.value
self._error(msg, t)
@TOKEN(wstring_literal)
def t_WSTRING_LITERAL(self, t):
return t
@TOKEN(u8string_literal)
def t_U8STRING_LITERAL(self, t):
return t
@TOKEN(u16string_literal)
def t_U16STRING_LITERAL(self, t):
return t
@TOKEN(u32string_literal)
def t_U32STRING_LITERAL(self, t):
return t
# unmatched string literals are caught by the preprocessor
@TOKEN(bad_string_literal)
def t_BAD_STRING_LITERAL(self, t):
msg = "String contains invalid escape code"
self._error(msg, t)
@TOKEN(identifier)
def t_ID(self, t):
t.type = self.keyword_map.get(t.value, "ID")
if t.type == 'ID' and self.type_lookup_func(t.value):
t.type = "TYPEID"
return t
def t_error(self, t):
msg = 'Illegal character %s' % repr(t.value[0])
self._error(msg, t)
| 17,167 | Python | 29.933333 | 129 | 0.528747 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/c_parser.py | #------------------------------------------------------------------------------
# pycparser: c_parser.py
#
# CParser class: Parser and AST builder for the C language
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#------------------------------------------------------------------------------
from .ply import yacc
from . import c_ast
from .c_lexer import CLexer
from .plyparser import PLYParser, ParseError, parameterized, template
from .ast_transforms import fix_switch_cases, fix_atomic_specifiers
@template
class CParser(PLYParser):
def __init__(
self,
lex_optimize=True,
lexer=CLexer,
lextab='pycparser.lextab',
yacc_optimize=True,
yacctab='pycparser.yacctab',
yacc_debug=False,
taboutputdir=''):
""" Create a new CParser.
Some arguments for controlling the debug/optimization
level of the parser are provided. The defaults are
tuned for release/performance mode.
The simple rules for using them are:
*) When tweaking CParser/CLexer, set these to False
*) When releasing a stable parser, set to True
lex_optimize:
Set to False when you're modifying the lexer.
Otherwise, changes in the lexer won't be used, if
some lextab.py file exists.
When releasing with a stable lexer, set to True
to save the re-generation of the lexer table on
each run.
lexer:
Set this parameter to define the lexer to use if
you're not using the default CLexer.
lextab:
Points to the lex table that's used for optimized
mode. Only if you're modifying the lexer and want
some tests to avoid re-generating the table, make
this point to a local lex table file (that's been
earlier generated with lex_optimize=True)
yacc_optimize:
Set to False when you're modifying the parser.
Otherwise, changes in the parser won't be used, if
some parsetab.py file exists.
When releasing with a stable parser, set to True
to save the re-generation of the parser table on
each run.
yacctab:
Points to the yacc table that's used for optimized
mode. Only if you're modifying the parser, make
this point to a local yacc table file
yacc_debug:
Generate a parser.out file that explains how yacc
built the parsing table from the grammar.
taboutputdir:
Set this parameter to control the location of generated
lextab and yacctab files.
"""
self.clex = lexer(
error_func=self._lex_error_func,
on_lbrace_func=self._lex_on_lbrace_func,
on_rbrace_func=self._lex_on_rbrace_func,
type_lookup_func=self._lex_type_lookup_func)
self.clex.build(
optimize=lex_optimize,
lextab=lextab,
outputdir=taboutputdir)
self.tokens = self.clex.tokens
rules_with_opt = [
'abstract_declarator',
'assignment_expression',
'declaration_list',
'declaration_specifiers_no_type',
'designation',
'expression',
'identifier_list',
'init_declarator_list',
'id_init_declarator_list',
'initializer_list',
'parameter_type_list',
'block_item_list',
'type_qualifier_list',
'struct_declarator_list'
]
for rule in rules_with_opt:
self._create_opt_rule(rule)
self.cparser = yacc.yacc(
module=self,
start='translation_unit_or_empty',
debug=yacc_debug,
optimize=yacc_optimize,
tabmodule=yacctab,
outputdir=taboutputdir)
# Stack of scopes for keeping track of symbols. _scope_stack[-1] is
# the current (topmost) scope. Each scope is a dictionary that
# specifies whether a name is a type. If _scope_stack[n][name] is
# True, 'name' is currently a type in the scope. If it's False,
# 'name' is used in the scope but not as a type (for instance, if we
# saw: int name;
# If 'name' is not a key in _scope_stack[n] then 'name' was not defined
# in this scope at all.
self._scope_stack = [dict()]
# Keeps track of the last token given to yacc (the lookahead token)
self._last_yielded_token = None
def parse(self, text, filename='', debug=False):
""" Parses C code and returns an AST.
text:
A string containing the C source code
filename:
Name of the file being parsed (for meaningful
error messages)
debug:
Debug flag to YACC
"""
self.clex.filename = filename
self.clex.reset_lineno()
self._scope_stack = [dict()]
self._last_yielded_token = None
return self.cparser.parse(
input=text,
lexer=self.clex,
debug=debug)
######################-- PRIVATE --######################
def _push_scope(self):
self._scope_stack.append(dict())
def _pop_scope(self):
assert len(self._scope_stack) > 1
self._scope_stack.pop()
def _add_typedef_name(self, name, coord):
""" Add a new typedef name (ie a TYPEID) to the current scope
"""
if not self._scope_stack[-1].get(name, True):
self._parse_error(
"Typedef %r previously declared as non-typedef "
"in this scope" % name, coord)
self._scope_stack[-1][name] = True
def _add_identifier(self, name, coord):
""" Add a new object, function, or enum member name (ie an ID) to the
current scope
"""
if self._scope_stack[-1].get(name, False):
self._parse_error(
"Non-typedef %r previously declared as typedef "
"in this scope" % name, coord)
self._scope_stack[-1][name] = False
def _is_type_in_scope(self, name):
""" Is *name* a typedef-name in the current scope?
"""
for scope in reversed(self._scope_stack):
# If name is an identifier in this scope it shadows typedefs in
# higher scopes.
in_scope = scope.get(name)
if in_scope is not None: return in_scope
return False
def _lex_error_func(self, msg, line, column):
self._parse_error(msg, self._coord(line, column))
def _lex_on_lbrace_func(self):
self._push_scope()
def _lex_on_rbrace_func(self):
self._pop_scope()
def _lex_type_lookup_func(self, name):
""" Looks up types that were previously defined with
typedef.
Passed to the lexer for recognizing identifiers that
are types.
"""
is_type = self._is_type_in_scope(name)
return is_type
def _get_yacc_lookahead_token(self):
""" We need access to yacc's lookahead token in certain cases.
This is the last token yacc requested from the lexer, so we
ask the lexer.
"""
return self.clex.last_token
# To understand what's going on here, read sections A.8.5 and
# A.8.6 of K&R2 very carefully.
#
# A C type consists of a basic type declaration, with a list
# of modifiers. For example:
#
# int *c[5];
#
# The basic declaration here is 'int c', and the pointer and
# the array are the modifiers.
#
# Basic declarations are represented by TypeDecl (from module c_ast) and the
# modifiers are FuncDecl, PtrDecl and ArrayDecl.
#
# The standard states that whenever a new modifier is parsed, it should be
# added to the end of the list of modifiers. For example:
#
# K&R2 A.8.6.2: Array Declarators
#
# In a declaration T D where D has the form
# D1 [constant-expression-opt]
# and the type of the identifier in the declaration T D1 is
# "type-modifier T", the type of the
# identifier of D is "type-modifier array of T"
#
# This is what this method does. The declarator it receives
# can be a list of declarators ending with TypeDecl. It
# tacks the modifier to the end of this list, just before
# the TypeDecl.
#
# Additionally, the modifier may be a list itself. This is
# useful for pointers, that can come as a chain from the rule
# p_pointer. In this case, the whole modifier list is spliced
# into the new location.
def _type_modify_decl(self, decl, modifier):
""" Tacks a type modifier on a declarator, and returns
the modified declarator.
Note: the declarator and modifier may be modified
"""
#~ print '****'
#~ decl.show(offset=3)
#~ modifier.show(offset=3)
#~ print '****'
modifier_head = modifier
modifier_tail = modifier
# The modifier may be a nested list. Reach its tail.
while modifier_tail.type:
modifier_tail = modifier_tail.type
# If the decl is a basic type, just tack the modifier onto it.
if isinstance(decl, c_ast.TypeDecl):
modifier_tail.type = decl
return modifier
else:
# Otherwise, the decl is a list of modifiers. Reach
# its tail and splice the modifier onto the tail,
# pointing to the underlying basic type.
decl_tail = decl
while not isinstance(decl_tail.type, c_ast.TypeDecl):
decl_tail = decl_tail.type
modifier_tail.type = decl_tail.type
decl_tail.type = modifier_head
return decl
# Due to the order in which declarators are constructed,
# they have to be fixed in order to look like a normal AST.
#
# When a declaration arrives from syntax construction, it has
# these problems:
# * The innermost TypeDecl has no type (because the basic
# type is only known at the uppermost declaration level)
# * The declaration has no variable name, since that is saved
# in the innermost TypeDecl
# * The typename of the declaration is a list of type
# specifiers, and not a node. Here, basic identifier types
# should be separated from more complex types like enums
# and structs.
#
# This method fixes these problems.
def _fix_decl_name_type(self, decl, typename):
""" Fixes a declaration. Modifies decl.
"""
# Reach the underlying basic type
#
type = decl
while not isinstance(type, c_ast.TypeDecl):
type = type.type
decl.name = type.declname
type.quals = decl.quals[:]
# The typename is a list of types. If any type in this
# list isn't an IdentifierType, it must be the only
# type in the list (it's illegal to declare "int enum ..")
# If all the types are basic, they're collected in the
# IdentifierType holder.
for tn in typename:
if not isinstance(tn, c_ast.IdentifierType):
if len(typename) > 1:
self._parse_error(
"Invalid multiple types specified", tn.coord)
else:
type.type = tn
return decl
if not typename:
# Functions default to returning int
#
if not isinstance(decl.type, c_ast.FuncDecl):
self._parse_error(
"Missing type in declaration", decl.coord)
type.type = c_ast.IdentifierType(
['int'],
coord=decl.coord)
else:
# At this point, we know that typename is a list of IdentifierType
# nodes. Concatenate all the names into a single list.
#
type.type = c_ast.IdentifierType(
[name for id in typename for name in id.names],
coord=typename[0].coord)
return decl
def _add_declaration_specifier(self, declspec, newspec, kind, append=False):
""" Declaration specifiers are represented by a dictionary
with the entries:
* qual: a list of type qualifiers
* storage: a list of storage type qualifiers
* type: a list of type specifiers
* function: a list of function specifiers
* alignment: a list of alignment specifiers
This method is given a declaration specifier, and a
new specifier of a given kind.
If `append` is True, the new specifier is added to the end of
the specifiers list, otherwise it's added at the beginning.
Returns the declaration specifier, with the new
specifier incorporated.
"""
spec = declspec or dict(qual=[], storage=[], type=[], function=[], alignment=[])
if append:
spec[kind].append(newspec)
else:
spec[kind].insert(0, newspec)
return spec
def _build_declarations(self, spec, decls, typedef_namespace=False):
""" Builds a list of declarations all sharing the given specifiers.
If typedef_namespace is true, each declared name is added
to the "typedef namespace", which also includes objects,
functions, and enum constants.
"""
is_typedef = 'typedef' in spec['storage']
declarations = []
# Bit-fields are allowed to be unnamed.
if decls[0].get('bitsize') is not None:
pass
# When redeclaring typedef names as identifiers in inner scopes, a
# problem can occur where the identifier gets grouped into
# spec['type'], leaving decl as None. This can only occur for the
# first declarator.
elif decls[0]['decl'] is None:
if len(spec['type']) < 2 or len(spec['type'][-1].names) != 1 or \
not self._is_type_in_scope(spec['type'][-1].names[0]):
coord = '?'
for t in spec['type']:
if hasattr(t, 'coord'):
coord = t.coord
break
self._parse_error('Invalid declaration', coord)
# Make this look as if it came from "direct_declarator:ID"
decls[0]['decl'] = c_ast.TypeDecl(
declname=spec['type'][-1].names[0],
type=None,
quals=None,
align=spec['alignment'],
coord=spec['type'][-1].coord)
# Remove the "new" type's name from the end of spec['type']
del spec['type'][-1]
# A similar problem can occur where the declaration ends up looking
# like an abstract declarator. Give it a name if this is the case.
elif not isinstance(decls[0]['decl'], (
c_ast.Enum, c_ast.Struct, c_ast.Union, c_ast.IdentifierType)):
decls_0_tail = decls[0]['decl']
while not isinstance(decls_0_tail, c_ast.TypeDecl):
decls_0_tail = decls_0_tail.type
if decls_0_tail.declname is None:
decls_0_tail.declname = spec['type'][-1].names[0]
del spec['type'][-1]
for decl in decls:
assert decl['decl'] is not None
if is_typedef:
declaration = c_ast.Typedef(
name=None,
quals=spec['qual'],
storage=spec['storage'],
type=decl['decl'],
coord=decl['decl'].coord)
else:
declaration = c_ast.Decl(
name=None,
quals=spec['qual'],
align=spec['alignment'],
storage=spec['storage'],
funcspec=spec['function'],
type=decl['decl'],
init=decl.get('init'),
bitsize=decl.get('bitsize'),
coord=decl['decl'].coord)
if isinstance(declaration.type, (
c_ast.Enum, c_ast.Struct, c_ast.Union,
c_ast.IdentifierType)):
fixed_decl = declaration
else:
fixed_decl = self._fix_decl_name_type(declaration, spec['type'])
# Add the type name defined by typedef to a
# symbol table (for usage in the lexer)
if typedef_namespace:
if is_typedef:
self._add_typedef_name(fixed_decl.name, fixed_decl.coord)
else:
self._add_identifier(fixed_decl.name, fixed_decl.coord)
fixed_decl = fix_atomic_specifiers(fixed_decl)
declarations.append(fixed_decl)
return declarations
def _build_function_definition(self, spec, decl, param_decls, body):
""" Builds a function definition.
"""
if 'typedef' in spec['storage']:
self._parse_error("Invalid typedef", decl.coord)
declaration = self._build_declarations(
spec=spec,
decls=[dict(decl=decl, init=None)],
typedef_namespace=True)[0]
return c_ast.FuncDef(
decl=declaration,
param_decls=param_decls,
body=body,
coord=decl.coord)
def _select_struct_union_class(self, token):
""" Given a token (either STRUCT or UNION), selects the
appropriate AST class.
"""
if token == 'struct':
return c_ast.Struct
else:
return c_ast.Union
##
## Precedence and associativity of operators
##
# If this changes, c_generator.CGenerator.precedence_map needs to change as
# well
precedence = (
('left', 'LOR'),
('left', 'LAND'),
('left', 'OR'),
('left', 'XOR'),
('left', 'AND'),
('left', 'EQ', 'NE'),
('left', 'GT', 'GE', 'LT', 'LE'),
('left', 'RSHIFT', 'LSHIFT'),
('left', 'PLUS', 'MINUS'),
('left', 'TIMES', 'DIVIDE', 'MOD')
)
##
## Grammar productions
## Implementation of the BNF defined in K&R2 A.13
##
# Wrapper around a translation unit, to allow for empty input.
# Not strictly part of the C99 Grammar, but useful in practice.
def p_translation_unit_or_empty(self, p):
""" translation_unit_or_empty : translation_unit
| empty
"""
if p[1] is None:
p[0] = c_ast.FileAST([])
else:
p[0] = c_ast.FileAST(p[1])
def p_translation_unit_1(self, p):
""" translation_unit : external_declaration
"""
# Note: external_declaration is already a list
p[0] = p[1]
def p_translation_unit_2(self, p):
""" translation_unit : translation_unit external_declaration
"""
p[1].extend(p[2])
p[0] = p[1]
# Declarations always come as lists (because they can be
# several in one line), so we wrap the function definition
# into a list as well, to make the return value of
# external_declaration homogeneous.
def p_external_declaration_1(self, p):
""" external_declaration : function_definition
"""
p[0] = [p[1]]
def p_external_declaration_2(self, p):
""" external_declaration : declaration
"""
p[0] = p[1]
def p_external_declaration_3(self, p):
""" external_declaration : pp_directive
| pppragma_directive
"""
p[0] = [p[1]]
def p_external_declaration_4(self, p):
""" external_declaration : SEMI
"""
p[0] = []
def p_external_declaration_5(self, p):
""" external_declaration : static_assert
"""
p[0] = p[1]
def p_static_assert_declaration(self, p):
""" static_assert : _STATIC_ASSERT LPAREN constant_expression COMMA unified_string_literal RPAREN
| _STATIC_ASSERT LPAREN constant_expression RPAREN
"""
if len(p) == 5:
p[0] = [c_ast.StaticAssert(p[3], None, self._token_coord(p, 1))]
else:
p[0] = [c_ast.StaticAssert(p[3], p[5], self._token_coord(p, 1))]
def p_pp_directive(self, p):
""" pp_directive : PPHASH
"""
self._parse_error('Directives not supported yet',
self._token_coord(p, 1))
def p_pppragma_directive(self, p):
""" pppragma_directive : PPPRAGMA
| PPPRAGMA PPPRAGMASTR
"""
if len(p) == 3:
p[0] = c_ast.Pragma(p[2], self._token_coord(p, 2))
else:
p[0] = c_ast.Pragma("", self._token_coord(p, 1))
# In function definitions, the declarator can be followed by
# a declaration list, for old "K&R style" function definitios.
def p_function_definition_1(self, p):
""" function_definition : id_declarator declaration_list_opt compound_statement
"""
# no declaration specifiers - 'int' becomes the default type
spec = dict(
qual=[],
alignment=[],
storage=[],
type=[c_ast.IdentifierType(['int'],
coord=self._token_coord(p, 1))],
function=[])
p[0] = self._build_function_definition(
spec=spec,
decl=p[1],
param_decls=p[2],
body=p[3])
def p_function_definition_2(self, p):
""" function_definition : declaration_specifiers id_declarator declaration_list_opt compound_statement
"""
spec = p[1]
p[0] = self._build_function_definition(
spec=spec,
decl=p[2],
param_decls=p[3],
body=p[4])
# Note, according to C18 A.2.2 6.7.10 static_assert-declaration _Static_assert
# is a declaration, not a statement. We additionally recognise it as a statement
# to fix parsing of _Static_assert inside the functions.
#
def p_statement(self, p):
""" statement : labeled_statement
| expression_statement
| compound_statement
| selection_statement
| iteration_statement
| jump_statement
| pppragma_directive
| static_assert
"""
p[0] = p[1]
# A pragma is generally considered a decorator rather than an actual
# statement. Still, for the purposes of analyzing an abstract syntax tree of
# C code, pragma's should not be ignored and were previously treated as a
# statement. This presents a problem for constructs that take a statement
# such as labeled_statements, selection_statements, and
# iteration_statements, causing a misleading structure in the AST. For
# example, consider the following C code.
#
# for (int i = 0; i < 3; i++)
# #pragma omp critical
# sum += 1;
#
# This code will compile and execute "sum += 1;" as the body of the for
# loop. Previous implementations of PyCParser would render the AST for this
# block of code as follows:
#
# For:
# DeclList:
# Decl: i, [], [], []
# TypeDecl: i, []
# IdentifierType: ['int']
# Constant: int, 0
# BinaryOp: <
# ID: i
# Constant: int, 3
# UnaryOp: p++
# ID: i
# Pragma: omp critical
# Assignment: +=
# ID: sum
# Constant: int, 1
#
# This AST misleadingly takes the Pragma as the body of the loop and the
# assignment then becomes a sibling of the loop.
#
# To solve edge cases like these, the pragmacomp_or_statement rule groups
# a pragma and its following statement (which would otherwise be orphaned)
# using a compound block, effectively turning the above code into:
#
# for (int i = 0; i < 3; i++) {
# #pragma omp critical
# sum += 1;
# }
def p_pragmacomp_or_statement(self, p):
""" pragmacomp_or_statement : pppragma_directive statement
| statement
"""
if isinstance(p[1], c_ast.Pragma) and len(p) == 3:
p[0] = c_ast.Compound(
block_items=[p[1], p[2]],
coord=self._token_coord(p, 1))
else:
p[0] = p[1]
# In C, declarations can come several in a line:
# int x, *px, romulo = 5;
#
# However, for the AST, we will split them to separate Decl
# nodes.
#
# This rule splits its declarations and always returns a list
# of Decl nodes, even if it's one element long.
#
def p_decl_body(self, p):
""" decl_body : declaration_specifiers init_declarator_list_opt
| declaration_specifiers_no_type id_init_declarator_list_opt
"""
spec = p[1]
# p[2] (init_declarator_list_opt) is either a list or None
#
if p[2] is None:
# By the standard, you must have at least one declarator unless
# declaring a structure tag, a union tag, or the members of an
# enumeration.
#
ty = spec['type']
s_u_or_e = (c_ast.Struct, c_ast.Union, c_ast.Enum)
if len(ty) == 1 and isinstance(ty[0], s_u_or_e):
decls = [c_ast.Decl(
name=None,
quals=spec['qual'],
align=spec['alignment'],
storage=spec['storage'],
funcspec=spec['function'],
type=ty[0],
init=None,
bitsize=None,
coord=ty[0].coord)]
# However, this case can also occur on redeclared identifiers in
# an inner scope. The trouble is that the redeclared type's name
# gets grouped into declaration_specifiers; _build_declarations
# compensates for this.
#
else:
decls = self._build_declarations(
spec=spec,
decls=[dict(decl=None, init=None)],
typedef_namespace=True)
else:
decls = self._build_declarations(
spec=spec,
decls=p[2],
typedef_namespace=True)
p[0] = decls
# The declaration has been split to a decl_body sub-rule and
# SEMI, because having them in a single rule created a problem
# for defining typedefs.
#
# If a typedef line was directly followed by a line using the
# type defined with the typedef, the type would not be
# recognized. This is because to reduce the declaration rule,
# the parser's lookahead asked for the token after SEMI, which
# was the type from the next line, and the lexer had no chance
# to see the updated type symbol table.
#
# Splitting solves this problem, because after seeing SEMI,
# the parser reduces decl_body, which actually adds the new
# type into the table to be seen by the lexer before the next
# line is reached.
def p_declaration(self, p):
""" declaration : decl_body SEMI
"""
p[0] = p[1]
# Since each declaration is a list of declarations, this
# rule will combine all the declarations and return a single
# list
#
def p_declaration_list(self, p):
""" declaration_list : declaration
| declaration_list declaration
"""
p[0] = p[1] if len(p) == 2 else p[1] + p[2]
# To know when declaration-specifiers end and declarators begin,
# we require declaration-specifiers to have at least one
# type-specifier, and disallow typedef-names after we've seen any
# type-specifier. These are both required by the spec.
#
def p_declaration_specifiers_no_type_1(self, p):
""" declaration_specifiers_no_type : type_qualifier declaration_specifiers_no_type_opt
"""
p[0] = self._add_declaration_specifier(p[2], p[1], 'qual')
def p_declaration_specifiers_no_type_2(self, p):
""" declaration_specifiers_no_type : storage_class_specifier declaration_specifiers_no_type_opt
"""
p[0] = self._add_declaration_specifier(p[2], p[1], 'storage')
def p_declaration_specifiers_no_type_3(self, p):
""" declaration_specifiers_no_type : function_specifier declaration_specifiers_no_type_opt
"""
p[0] = self._add_declaration_specifier(p[2], p[1], 'function')
# Without this, `typedef _Atomic(T) U` will parse incorrectly because the
# _Atomic qualifier will match, instead of the specifier.
def p_declaration_specifiers_no_type_4(self, p):
""" declaration_specifiers_no_type : atomic_specifier declaration_specifiers_no_type_opt
"""
p[0] = self._add_declaration_specifier(p[2], p[1], 'type')
def p_declaration_specifiers_no_type_5(self, p):
""" declaration_specifiers_no_type : alignment_specifier declaration_specifiers_no_type_opt
"""
p[0] = self._add_declaration_specifier(p[2], p[1], 'alignment')
def p_declaration_specifiers_1(self, p):
""" declaration_specifiers : declaration_specifiers type_qualifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'qual', append=True)
def p_declaration_specifiers_2(self, p):
""" declaration_specifiers : declaration_specifiers storage_class_specifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'storage', append=True)
def p_declaration_specifiers_3(self, p):
""" declaration_specifiers : declaration_specifiers function_specifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'function', append=True)
def p_declaration_specifiers_4(self, p):
""" declaration_specifiers : declaration_specifiers type_specifier_no_typeid
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'type', append=True)
def p_declaration_specifiers_5(self, p):
""" declaration_specifiers : type_specifier
"""
p[0] = self._add_declaration_specifier(None, p[1], 'type')
def p_declaration_specifiers_6(self, p):
""" declaration_specifiers : declaration_specifiers_no_type type_specifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'type', append=True)
def p_declaration_specifiers_7(self, p):
""" declaration_specifiers : declaration_specifiers alignment_specifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'alignment', append=True)
def p_storage_class_specifier(self, p):
""" storage_class_specifier : AUTO
| REGISTER
| STATIC
| EXTERN
| TYPEDEF
| _THREAD_LOCAL
"""
p[0] = p[1]
def p_function_specifier(self, p):
""" function_specifier : INLINE
| _NORETURN
"""
p[0] = p[1]
def p_type_specifier_no_typeid(self, p):
""" type_specifier_no_typeid : VOID
| _BOOL
| CHAR
| SHORT
| INT
| LONG
| FLOAT
| DOUBLE
| _COMPLEX
| SIGNED
| UNSIGNED
| __INT128
"""
p[0] = c_ast.IdentifierType([p[1]], coord=self._token_coord(p, 1))
def p_type_specifier(self, p):
""" type_specifier : typedef_name
| enum_specifier
| struct_or_union_specifier
| type_specifier_no_typeid
| atomic_specifier
"""
p[0] = p[1]
# See section 6.7.2.4 of the C11 standard.
def p_atomic_specifier(self, p):
""" atomic_specifier : _ATOMIC LPAREN type_name RPAREN
"""
typ = p[3]
typ.quals.append('_Atomic')
p[0] = typ
def p_type_qualifier(self, p):
""" type_qualifier : CONST
| RESTRICT
| VOLATILE
| _ATOMIC
"""
p[0] = p[1]
def p_init_declarator_list(self, p):
""" init_declarator_list : init_declarator
| init_declarator_list COMMA init_declarator
"""
p[0] = p[1] + [p[3]] if len(p) == 4 else [p[1]]
# Returns a {decl=<declarator> : init=<initializer>} dictionary
# If there's no initializer, uses None
#
def p_init_declarator(self, p):
""" init_declarator : declarator
| declarator EQUALS initializer
"""
p[0] = dict(decl=p[1], init=(p[3] if len(p) > 2 else None))
def p_id_init_declarator_list(self, p):
""" id_init_declarator_list : id_init_declarator
| id_init_declarator_list COMMA init_declarator
"""
p[0] = p[1] + [p[3]] if len(p) == 4 else [p[1]]
def p_id_init_declarator(self, p):
""" id_init_declarator : id_declarator
| id_declarator EQUALS initializer
"""
p[0] = dict(decl=p[1], init=(p[3] if len(p) > 2 else None))
# Require at least one type specifier in a specifier-qualifier-list
#
def p_specifier_qualifier_list_1(self, p):
""" specifier_qualifier_list : specifier_qualifier_list type_specifier_no_typeid
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'type', append=True)
def p_specifier_qualifier_list_2(self, p):
""" specifier_qualifier_list : specifier_qualifier_list type_qualifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'qual', append=True)
def p_specifier_qualifier_list_3(self, p):
""" specifier_qualifier_list : type_specifier
"""
p[0] = self._add_declaration_specifier(None, p[1], 'type')
def p_specifier_qualifier_list_4(self, p):
""" specifier_qualifier_list : type_qualifier_list type_specifier
"""
p[0] = dict(qual=p[1], alignment=[], storage=[], type=[p[2]], function=[])
def p_specifier_qualifier_list_5(self, p):
""" specifier_qualifier_list : alignment_specifier
"""
p[0] = dict(qual=[], alignment=[p[1]], storage=[], type=[], function=[])
def p_specifier_qualifier_list_6(self, p):
""" specifier_qualifier_list : specifier_qualifier_list alignment_specifier
"""
p[0] = self._add_declaration_specifier(p[1], p[2], 'alignment')
# TYPEID is allowed here (and in other struct/enum related tag names), because
# struct/enum tags reside in their own namespace and can be named the same as types
#
def p_struct_or_union_specifier_1(self, p):
""" struct_or_union_specifier : struct_or_union ID
| struct_or_union TYPEID
"""
klass = self._select_struct_union_class(p[1])
# None means no list of members
p[0] = klass(
name=p[2],
decls=None,
coord=self._token_coord(p, 2))
def p_struct_or_union_specifier_2(self, p):
""" struct_or_union_specifier : struct_or_union brace_open struct_declaration_list brace_close
| struct_or_union brace_open brace_close
"""
klass = self._select_struct_union_class(p[1])
if len(p) == 4:
# Empty sequence means an empty list of members
p[0] = klass(
name=None,
decls=[],
coord=self._token_coord(p, 2))
else:
p[0] = klass(
name=None,
decls=p[3],
coord=self._token_coord(p, 2))
def p_struct_or_union_specifier_3(self, p):
""" struct_or_union_specifier : struct_or_union ID brace_open struct_declaration_list brace_close
| struct_or_union ID brace_open brace_close
| struct_or_union TYPEID brace_open struct_declaration_list brace_close
| struct_or_union TYPEID brace_open brace_close
"""
klass = self._select_struct_union_class(p[1])
if len(p) == 5:
# Empty sequence means an empty list of members
p[0] = klass(
name=p[2],
decls=[],
coord=self._token_coord(p, 2))
else:
p[0] = klass(
name=p[2],
decls=p[4],
coord=self._token_coord(p, 2))
def p_struct_or_union(self, p):
""" struct_or_union : STRUCT
| UNION
"""
p[0] = p[1]
# Combine all declarations into a single list
#
def p_struct_declaration_list(self, p):
""" struct_declaration_list : struct_declaration
| struct_declaration_list struct_declaration
"""
if len(p) == 2:
p[0] = p[1] or []
else:
p[0] = p[1] + (p[2] or [])
def p_struct_declaration_1(self, p):
""" struct_declaration : specifier_qualifier_list struct_declarator_list_opt SEMI
"""
spec = p[1]
assert 'typedef' not in spec['storage']
if p[2] is not None:
decls = self._build_declarations(
spec=spec,
decls=p[2])
elif len(spec['type']) == 1:
# Anonymous struct/union, gcc extension, C1x feature.
# Although the standard only allows structs/unions here, I see no
# reason to disallow other types since some compilers have typedefs
# here, and pycparser isn't about rejecting all invalid code.
#
node = spec['type'][0]
if isinstance(node, c_ast.Node):
decl_type = node
else:
decl_type = c_ast.IdentifierType(node)
decls = self._build_declarations(
spec=spec,
decls=[dict(decl=decl_type)])
else:
# Structure/union members can have the same names as typedefs.
# The trouble is that the member's name gets grouped into
# specifier_qualifier_list; _build_declarations compensates.
#
decls = self._build_declarations(
spec=spec,
decls=[dict(decl=None, init=None)])
p[0] = decls
def p_struct_declaration_2(self, p):
""" struct_declaration : SEMI
"""
p[0] = None
def p_struct_declaration_3(self, p):
""" struct_declaration : pppragma_directive
"""
p[0] = [p[1]]
def p_struct_declarator_list(self, p):
""" struct_declarator_list : struct_declarator
| struct_declarator_list COMMA struct_declarator
"""
p[0] = p[1] + [p[3]] if len(p) == 4 else [p[1]]
# struct_declarator passes up a dict with the keys: decl (for
# the underlying declarator) and bitsize (for the bitsize)
#
def p_struct_declarator_1(self, p):
""" struct_declarator : declarator
"""
p[0] = {'decl': p[1], 'bitsize': None}
def p_struct_declarator_2(self, p):
""" struct_declarator : declarator COLON constant_expression
| COLON constant_expression
"""
if len(p) > 3:
p[0] = {'decl': p[1], 'bitsize': p[3]}
else:
p[0] = {'decl': c_ast.TypeDecl(None, None, None, None), 'bitsize': p[2]}
def p_enum_specifier_1(self, p):
""" enum_specifier : ENUM ID
| ENUM TYPEID
"""
p[0] = c_ast.Enum(p[2], None, self._token_coord(p, 1))
def p_enum_specifier_2(self, p):
""" enum_specifier : ENUM brace_open enumerator_list brace_close
"""
p[0] = c_ast.Enum(None, p[3], self._token_coord(p, 1))
def p_enum_specifier_3(self, p):
""" enum_specifier : ENUM ID brace_open enumerator_list brace_close
| ENUM TYPEID brace_open enumerator_list brace_close
"""
p[0] = c_ast.Enum(p[2], p[4], self._token_coord(p, 1))
def p_enumerator_list(self, p):
""" enumerator_list : enumerator
| enumerator_list COMMA
| enumerator_list COMMA enumerator
"""
if len(p) == 2:
p[0] = c_ast.EnumeratorList([p[1]], p[1].coord)
elif len(p) == 3:
p[0] = p[1]
else:
p[1].enumerators.append(p[3])
p[0] = p[1]
def p_alignment_specifier(self, p):
""" alignment_specifier : _ALIGNAS LPAREN type_name RPAREN
| _ALIGNAS LPAREN constant_expression RPAREN
"""
p[0] = c_ast.Alignas(p[3], self._token_coord(p, 1))
def p_enumerator(self, p):
""" enumerator : ID
| ID EQUALS constant_expression
"""
if len(p) == 2:
enumerator = c_ast.Enumerator(
p[1], None,
self._token_coord(p, 1))
else:
enumerator = c_ast.Enumerator(
p[1], p[3],
self._token_coord(p, 1))
self._add_identifier(enumerator.name, enumerator.coord)
p[0] = enumerator
def p_declarator(self, p):
""" declarator : id_declarator
| typeid_declarator
"""
p[0] = p[1]
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_xxx_declarator_1(self, p):
""" xxx_declarator : direct_xxx_declarator
"""
p[0] = p[1]
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_xxx_declarator_2(self, p):
""" xxx_declarator : pointer direct_xxx_declarator
"""
p[0] = self._type_modify_decl(p[2], p[1])
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_direct_xxx_declarator_1(self, p):
""" direct_xxx_declarator : yyy
"""
p[0] = c_ast.TypeDecl(
declname=p[1],
type=None,
quals=None,
align=None,
coord=self._token_coord(p, 1))
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'))
def p_direct_xxx_declarator_2(self, p):
""" direct_xxx_declarator : LPAREN xxx_declarator RPAREN
"""
p[0] = p[2]
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_direct_xxx_declarator_3(self, p):
""" direct_xxx_declarator : direct_xxx_declarator LBRACKET type_qualifier_list_opt assignment_expression_opt RBRACKET
"""
quals = (p[3] if len(p) > 5 else []) or []
# Accept dimension qualifiers
# Per C99 6.7.5.3 p7
arr = c_ast.ArrayDecl(
type=None,
dim=p[4] if len(p) > 5 else p[3],
dim_quals=quals,
coord=p[1].coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=arr)
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_direct_xxx_declarator_4(self, p):
""" direct_xxx_declarator : direct_xxx_declarator LBRACKET STATIC type_qualifier_list_opt assignment_expression RBRACKET
| direct_xxx_declarator LBRACKET type_qualifier_list STATIC assignment_expression RBRACKET
"""
# Using slice notation for PLY objects doesn't work in Python 3 for the
# version of PLY embedded with pycparser; see PLY Google Code issue 30.
# Work around that here by listing the two elements separately.
listed_quals = [item if isinstance(item, list) else [item]
for item in [p[3],p[4]]]
dim_quals = [qual for sublist in listed_quals for qual in sublist
if qual is not None]
arr = c_ast.ArrayDecl(
type=None,
dim=p[5],
dim_quals=dim_quals,
coord=p[1].coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=arr)
# Special for VLAs
#
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_direct_xxx_declarator_5(self, p):
""" direct_xxx_declarator : direct_xxx_declarator LBRACKET type_qualifier_list_opt TIMES RBRACKET
"""
arr = c_ast.ArrayDecl(
type=None,
dim=c_ast.ID(p[4], self._token_coord(p, 4)),
dim_quals=p[3] if p[3] is not None else [],
coord=p[1].coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=arr)
@parameterized(('id', 'ID'), ('typeid', 'TYPEID'), ('typeid_noparen', 'TYPEID'))
def p_direct_xxx_declarator_6(self, p):
""" direct_xxx_declarator : direct_xxx_declarator LPAREN parameter_type_list RPAREN
| direct_xxx_declarator LPAREN identifier_list_opt RPAREN
"""
func = c_ast.FuncDecl(
args=p[3],
type=None,
coord=p[1].coord)
# To see why _get_yacc_lookahead_token is needed, consider:
# typedef char TT;
# void foo(int TT) { TT = 10; }
# Outside the function, TT is a typedef, but inside (starting and
# ending with the braces) it's a parameter. The trouble begins with
# yacc's lookahead token. We don't know if we're declaring or
# defining a function until we see LBRACE, but if we wait for yacc to
# trigger a rule on that token, then TT will have already been read
# and incorrectly interpreted as TYPEID. We need to add the
# parameters to the scope the moment the lexer sees LBRACE.
#
if self._get_yacc_lookahead_token().type == "LBRACE":
if func.args is not None:
for param in func.args.params:
if isinstance(param, c_ast.EllipsisParam): break
self._add_identifier(param.name, param.coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=func)
def p_pointer(self, p):
""" pointer : TIMES type_qualifier_list_opt
| TIMES type_qualifier_list_opt pointer
"""
coord = self._token_coord(p, 1)
# Pointer decls nest from inside out. This is important when different
# levels have different qualifiers. For example:
#
# char * const * p;
#
# Means "pointer to const pointer to char"
#
# While:
#
# char ** const p;
#
# Means "const pointer to pointer to char"
#
# So when we construct PtrDecl nestings, the leftmost pointer goes in
# as the most nested type.
nested_type = c_ast.PtrDecl(quals=p[2] or [], type=None, coord=coord)
if len(p) > 3:
tail_type = p[3]
while tail_type.type is not None:
tail_type = tail_type.type
tail_type.type = nested_type
p[0] = p[3]
else:
p[0] = nested_type
def p_type_qualifier_list(self, p):
""" type_qualifier_list : type_qualifier
| type_qualifier_list type_qualifier
"""
p[0] = [p[1]] if len(p) == 2 else p[1] + [p[2]]
def p_parameter_type_list(self, p):
""" parameter_type_list : parameter_list
| parameter_list COMMA ELLIPSIS
"""
if len(p) > 2:
p[1].params.append(c_ast.EllipsisParam(self._token_coord(p, 3)))
p[0] = p[1]
def p_parameter_list(self, p):
""" parameter_list : parameter_declaration
| parameter_list COMMA parameter_declaration
"""
if len(p) == 2: # single parameter
p[0] = c_ast.ParamList([p[1]], p[1].coord)
else:
p[1].params.append(p[3])
p[0] = p[1]
# From ISO/IEC 9899:TC2, 6.7.5.3.11:
# "If, in a parameter declaration, an identifier can be treated either
# as a typedef name or as a parameter name, it shall be taken as a
# typedef name."
#
# Inside a parameter declaration, once we've reduced declaration specifiers,
# if we shift in an LPAREN and see a TYPEID, it could be either an abstract
# declarator or a declarator nested inside parens. This rule tells us to
# always treat it as an abstract declarator. Therefore, we only accept
# `id_declarator`s and `typeid_noparen_declarator`s.
def p_parameter_declaration_1(self, p):
""" parameter_declaration : declaration_specifiers id_declarator
| declaration_specifiers typeid_noparen_declarator
"""
spec = p[1]
if not spec['type']:
spec['type'] = [c_ast.IdentifierType(['int'],
coord=self._token_coord(p, 1))]
p[0] = self._build_declarations(
spec=spec,
decls=[dict(decl=p[2])])[0]
def p_parameter_declaration_2(self, p):
""" parameter_declaration : declaration_specifiers abstract_declarator_opt
"""
spec = p[1]
if not spec['type']:
spec['type'] = [c_ast.IdentifierType(['int'],
coord=self._token_coord(p, 1))]
# Parameters can have the same names as typedefs. The trouble is that
# the parameter's name gets grouped into declaration_specifiers, making
# it look like an old-style declaration; compensate.
#
if len(spec['type']) > 1 and len(spec['type'][-1].names) == 1 and \
self._is_type_in_scope(spec['type'][-1].names[0]):
decl = self._build_declarations(
spec=spec,
decls=[dict(decl=p[2], init=None)])[0]
# This truly is an old-style parameter declaration
#
else:
decl = c_ast.Typename(
name='',
quals=spec['qual'],
align=None,
type=p[2] or c_ast.TypeDecl(None, None, None, None),
coord=self._token_coord(p, 2))
typename = spec['type']
decl = self._fix_decl_name_type(decl, typename)
p[0] = decl
def p_identifier_list(self, p):
""" identifier_list : identifier
| identifier_list COMMA identifier
"""
if len(p) == 2: # single parameter
p[0] = c_ast.ParamList([p[1]], p[1].coord)
else:
p[1].params.append(p[3])
p[0] = p[1]
def p_initializer_1(self, p):
""" initializer : assignment_expression
"""
p[0] = p[1]
def p_initializer_2(self, p):
""" initializer : brace_open initializer_list_opt brace_close
| brace_open initializer_list COMMA brace_close
"""
if p[2] is None:
p[0] = c_ast.InitList([], self._token_coord(p, 1))
else:
p[0] = p[2]
def p_initializer_list(self, p):
""" initializer_list : designation_opt initializer
| initializer_list COMMA designation_opt initializer
"""
if len(p) == 3: # single initializer
init = p[2] if p[1] is None else c_ast.NamedInitializer(p[1], p[2])
p[0] = c_ast.InitList([init], p[2].coord)
else:
init = p[4] if p[3] is None else c_ast.NamedInitializer(p[3], p[4])
p[1].exprs.append(init)
p[0] = p[1]
def p_designation(self, p):
""" designation : designator_list EQUALS
"""
p[0] = p[1]
# Designators are represented as a list of nodes, in the order in which
# they're written in the code.
#
def p_designator_list(self, p):
""" designator_list : designator
| designator_list designator
"""
p[0] = [p[1]] if len(p) == 2 else p[1] + [p[2]]
def p_designator(self, p):
""" designator : LBRACKET constant_expression RBRACKET
| PERIOD identifier
"""
p[0] = p[2]
def p_type_name(self, p):
""" type_name : specifier_qualifier_list abstract_declarator_opt
"""
typename = c_ast.Typename(
name='',
quals=p[1]['qual'][:],
align=None,
type=p[2] or c_ast.TypeDecl(None, None, None, None),
coord=self._token_coord(p, 2))
p[0] = self._fix_decl_name_type(typename, p[1]['type'])
def p_abstract_declarator_1(self, p):
""" abstract_declarator : pointer
"""
dummytype = c_ast.TypeDecl(None, None, None, None)
p[0] = self._type_modify_decl(
decl=dummytype,
modifier=p[1])
def p_abstract_declarator_2(self, p):
""" abstract_declarator : pointer direct_abstract_declarator
"""
p[0] = self._type_modify_decl(p[2], p[1])
def p_abstract_declarator_3(self, p):
""" abstract_declarator : direct_abstract_declarator
"""
p[0] = p[1]
# Creating and using direct_abstract_declarator_opt here
# instead of listing both direct_abstract_declarator and the
# lack of it in the beginning of _1 and _2 caused two
# shift/reduce errors.
#
def p_direct_abstract_declarator_1(self, p):
""" direct_abstract_declarator : LPAREN abstract_declarator RPAREN """
p[0] = p[2]
def p_direct_abstract_declarator_2(self, p):
""" direct_abstract_declarator : direct_abstract_declarator LBRACKET assignment_expression_opt RBRACKET
"""
arr = c_ast.ArrayDecl(
type=None,
dim=p[3],
dim_quals=[],
coord=p[1].coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=arr)
def p_direct_abstract_declarator_3(self, p):
""" direct_abstract_declarator : LBRACKET type_qualifier_list_opt assignment_expression_opt RBRACKET
"""
quals = (p[2] if len(p) > 4 else []) or []
p[0] = c_ast.ArrayDecl(
type=c_ast.TypeDecl(None, None, None, None),
dim=p[3] if len(p) > 4 else p[2],
dim_quals=quals,
coord=self._token_coord(p, 1))
def p_direct_abstract_declarator_4(self, p):
""" direct_abstract_declarator : direct_abstract_declarator LBRACKET TIMES RBRACKET
"""
arr = c_ast.ArrayDecl(
type=None,
dim=c_ast.ID(p[3], self._token_coord(p, 3)),
dim_quals=[],
coord=p[1].coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=arr)
def p_direct_abstract_declarator_5(self, p):
""" direct_abstract_declarator : LBRACKET TIMES RBRACKET
"""
p[0] = c_ast.ArrayDecl(
type=c_ast.TypeDecl(None, None, None, None),
dim=c_ast.ID(p[3], self._token_coord(p, 3)),
dim_quals=[],
coord=self._token_coord(p, 1))
def p_direct_abstract_declarator_6(self, p):
""" direct_abstract_declarator : direct_abstract_declarator LPAREN parameter_type_list_opt RPAREN
"""
func = c_ast.FuncDecl(
args=p[3],
type=None,
coord=p[1].coord)
p[0] = self._type_modify_decl(decl=p[1], modifier=func)
def p_direct_abstract_declarator_7(self, p):
""" direct_abstract_declarator : LPAREN parameter_type_list_opt RPAREN
"""
p[0] = c_ast.FuncDecl(
args=p[2],
type=c_ast.TypeDecl(None, None, None, None),
coord=self._token_coord(p, 1))
# declaration is a list, statement isn't. To make it consistent, block_item
# will always be a list
#
def p_block_item(self, p):
""" block_item : declaration
| statement
"""
p[0] = p[1] if isinstance(p[1], list) else [p[1]]
# Since we made block_item a list, this just combines lists
#
def p_block_item_list(self, p):
""" block_item_list : block_item
| block_item_list block_item
"""
# Empty block items (plain ';') produce [None], so ignore them
p[0] = p[1] if (len(p) == 2 or p[2] == [None]) else p[1] + p[2]
def p_compound_statement_1(self, p):
""" compound_statement : brace_open block_item_list_opt brace_close """
p[0] = c_ast.Compound(
block_items=p[2],
coord=self._token_coord(p, 1))
def p_labeled_statement_1(self, p):
""" labeled_statement : ID COLON pragmacomp_or_statement """
p[0] = c_ast.Label(p[1], p[3], self._token_coord(p, 1))
def p_labeled_statement_2(self, p):
""" labeled_statement : CASE constant_expression COLON pragmacomp_or_statement """
p[0] = c_ast.Case(p[2], [p[4]], self._token_coord(p, 1))
def p_labeled_statement_3(self, p):
""" labeled_statement : DEFAULT COLON pragmacomp_or_statement """
p[0] = c_ast.Default([p[3]], self._token_coord(p, 1))
def p_selection_statement_1(self, p):
""" selection_statement : IF LPAREN expression RPAREN pragmacomp_or_statement """
p[0] = c_ast.If(p[3], p[5], None, self._token_coord(p, 1))
def p_selection_statement_2(self, p):
""" selection_statement : IF LPAREN expression RPAREN statement ELSE pragmacomp_or_statement """
p[0] = c_ast.If(p[3], p[5], p[7], self._token_coord(p, 1))
def p_selection_statement_3(self, p):
""" selection_statement : SWITCH LPAREN expression RPAREN pragmacomp_or_statement """
p[0] = fix_switch_cases(
c_ast.Switch(p[3], p[5], self._token_coord(p, 1)))
def p_iteration_statement_1(self, p):
""" iteration_statement : WHILE LPAREN expression RPAREN pragmacomp_or_statement """
p[0] = c_ast.While(p[3], p[5], self._token_coord(p, 1))
def p_iteration_statement_2(self, p):
""" iteration_statement : DO pragmacomp_or_statement WHILE LPAREN expression RPAREN SEMI """
p[0] = c_ast.DoWhile(p[5], p[2], self._token_coord(p, 1))
def p_iteration_statement_3(self, p):
""" iteration_statement : FOR LPAREN expression_opt SEMI expression_opt SEMI expression_opt RPAREN pragmacomp_or_statement """
p[0] = c_ast.For(p[3], p[5], p[7], p[9], self._token_coord(p, 1))
def p_iteration_statement_4(self, p):
""" iteration_statement : FOR LPAREN declaration expression_opt SEMI expression_opt RPAREN pragmacomp_or_statement """
p[0] = c_ast.For(c_ast.DeclList(p[3], self._token_coord(p, 1)),
p[4], p[6], p[8], self._token_coord(p, 1))
def p_jump_statement_1(self, p):
""" jump_statement : GOTO ID SEMI """
p[0] = c_ast.Goto(p[2], self._token_coord(p, 1))
def p_jump_statement_2(self, p):
""" jump_statement : BREAK SEMI """
p[0] = c_ast.Break(self._token_coord(p, 1))
def p_jump_statement_3(self, p):
""" jump_statement : CONTINUE SEMI """
p[0] = c_ast.Continue(self._token_coord(p, 1))
def p_jump_statement_4(self, p):
""" jump_statement : RETURN expression SEMI
| RETURN SEMI
"""
p[0] = c_ast.Return(p[2] if len(p) == 4 else None, self._token_coord(p, 1))
def p_expression_statement(self, p):
""" expression_statement : expression_opt SEMI """
if p[1] is None:
p[0] = c_ast.EmptyStatement(self._token_coord(p, 2))
else:
p[0] = p[1]
def p_expression(self, p):
""" expression : assignment_expression
| expression COMMA assignment_expression
"""
if len(p) == 2:
p[0] = p[1]
else:
if not isinstance(p[1], c_ast.ExprList):
p[1] = c_ast.ExprList([p[1]], p[1].coord)
p[1].exprs.append(p[3])
p[0] = p[1]
def p_parenthesized_compound_expression(self, p):
""" assignment_expression : LPAREN compound_statement RPAREN """
p[0] = p[2]
def p_typedef_name(self, p):
""" typedef_name : TYPEID """
p[0] = c_ast.IdentifierType([p[1]], coord=self._token_coord(p, 1))
def p_assignment_expression(self, p):
""" assignment_expression : conditional_expression
| unary_expression assignment_operator assignment_expression
"""
if len(p) == 2:
p[0] = p[1]
else:
p[0] = c_ast.Assignment(p[2], p[1], p[3], p[1].coord)
# K&R2 defines these as many separate rules, to encode
# precedence and associativity. Why work hard ? I'll just use
# the built in precedence/associativity specification feature
# of PLY. (see precedence declaration above)
#
def p_assignment_operator(self, p):
""" assignment_operator : EQUALS
| XOREQUAL
| TIMESEQUAL
| DIVEQUAL
| MODEQUAL
| PLUSEQUAL
| MINUSEQUAL
| LSHIFTEQUAL
| RSHIFTEQUAL
| ANDEQUAL
| OREQUAL
"""
p[0] = p[1]
def p_constant_expression(self, p):
""" constant_expression : conditional_expression """
p[0] = p[1]
def p_conditional_expression(self, p):
""" conditional_expression : binary_expression
| binary_expression CONDOP expression COLON conditional_expression
"""
if len(p) == 2:
p[0] = p[1]
else:
p[0] = c_ast.TernaryOp(p[1], p[3], p[5], p[1].coord)
def p_binary_expression(self, p):
""" binary_expression : cast_expression
| binary_expression TIMES binary_expression
| binary_expression DIVIDE binary_expression
| binary_expression MOD binary_expression
| binary_expression PLUS binary_expression
| binary_expression MINUS binary_expression
| binary_expression RSHIFT binary_expression
| binary_expression LSHIFT binary_expression
| binary_expression LT binary_expression
| binary_expression LE binary_expression
| binary_expression GE binary_expression
| binary_expression GT binary_expression
| binary_expression EQ binary_expression
| binary_expression NE binary_expression
| binary_expression AND binary_expression
| binary_expression OR binary_expression
| binary_expression XOR binary_expression
| binary_expression LAND binary_expression
| binary_expression LOR binary_expression
"""
if len(p) == 2:
p[0] = p[1]
else:
p[0] = c_ast.BinaryOp(p[2], p[1], p[3], p[1].coord)
def p_cast_expression_1(self, p):
""" cast_expression : unary_expression """
p[0] = p[1]
def p_cast_expression_2(self, p):
""" cast_expression : LPAREN type_name RPAREN cast_expression """
p[0] = c_ast.Cast(p[2], p[4], self._token_coord(p, 1))
def p_unary_expression_1(self, p):
""" unary_expression : postfix_expression """
p[0] = p[1]
def p_unary_expression_2(self, p):
""" unary_expression : PLUSPLUS unary_expression
| MINUSMINUS unary_expression
| unary_operator cast_expression
"""
p[0] = c_ast.UnaryOp(p[1], p[2], p[2].coord)
def p_unary_expression_3(self, p):
""" unary_expression : SIZEOF unary_expression
| SIZEOF LPAREN type_name RPAREN
| _ALIGNOF LPAREN type_name RPAREN
"""
p[0] = c_ast.UnaryOp(
p[1],
p[2] if len(p) == 3 else p[3],
self._token_coord(p, 1))
def p_unary_operator(self, p):
""" unary_operator : AND
| TIMES
| PLUS
| MINUS
| NOT
| LNOT
"""
p[0] = p[1]
def p_postfix_expression_1(self, p):
""" postfix_expression : primary_expression """
p[0] = p[1]
def p_postfix_expression_2(self, p):
""" postfix_expression : postfix_expression LBRACKET expression RBRACKET """
p[0] = c_ast.ArrayRef(p[1], p[3], p[1].coord)
def p_postfix_expression_3(self, p):
""" postfix_expression : postfix_expression LPAREN argument_expression_list RPAREN
| postfix_expression LPAREN RPAREN
"""
p[0] = c_ast.FuncCall(p[1], p[3] if len(p) == 5 else None, p[1].coord)
def p_postfix_expression_4(self, p):
""" postfix_expression : postfix_expression PERIOD ID
| postfix_expression PERIOD TYPEID
| postfix_expression ARROW ID
| postfix_expression ARROW TYPEID
"""
field = c_ast.ID(p[3], self._token_coord(p, 3))
p[0] = c_ast.StructRef(p[1], p[2], field, p[1].coord)
def p_postfix_expression_5(self, p):
""" postfix_expression : postfix_expression PLUSPLUS
| postfix_expression MINUSMINUS
"""
p[0] = c_ast.UnaryOp('p' + p[2], p[1], p[1].coord)
def p_postfix_expression_6(self, p):
""" postfix_expression : LPAREN type_name RPAREN brace_open initializer_list brace_close
| LPAREN type_name RPAREN brace_open initializer_list COMMA brace_close
"""
p[0] = c_ast.CompoundLiteral(p[2], p[5])
def p_primary_expression_1(self, p):
""" primary_expression : identifier """
p[0] = p[1]
def p_primary_expression_2(self, p):
""" primary_expression : constant """
p[0] = p[1]
def p_primary_expression_3(self, p):
""" primary_expression : unified_string_literal
| unified_wstring_literal
"""
p[0] = p[1]
def p_primary_expression_4(self, p):
""" primary_expression : LPAREN expression RPAREN """
p[0] = p[2]
def p_primary_expression_5(self, p):
""" primary_expression : OFFSETOF LPAREN type_name COMMA offsetof_member_designator RPAREN
"""
coord = self._token_coord(p, 1)
p[0] = c_ast.FuncCall(c_ast.ID(p[1], coord),
c_ast.ExprList([p[3], p[5]], coord),
coord)
def p_offsetof_member_designator(self, p):
""" offsetof_member_designator : identifier
| offsetof_member_designator PERIOD identifier
| offsetof_member_designator LBRACKET expression RBRACKET
"""
if len(p) == 2:
p[0] = p[1]
elif len(p) == 4:
p[0] = c_ast.StructRef(p[1], p[2], p[3], p[1].coord)
elif len(p) == 5:
p[0] = c_ast.ArrayRef(p[1], p[3], p[1].coord)
else:
raise NotImplementedError("Unexpected parsing state. len(p): %u" % len(p))
def p_argument_expression_list(self, p):
""" argument_expression_list : assignment_expression
| argument_expression_list COMMA assignment_expression
"""
if len(p) == 2: # single expr
p[0] = c_ast.ExprList([p[1]], p[1].coord)
else:
p[1].exprs.append(p[3])
p[0] = p[1]
def p_identifier(self, p):
""" identifier : ID """
p[0] = c_ast.ID(p[1], self._token_coord(p, 1))
def p_constant_1(self, p):
""" constant : INT_CONST_DEC
| INT_CONST_OCT
| INT_CONST_HEX
| INT_CONST_BIN
| INT_CONST_CHAR
"""
uCount = 0
lCount = 0
for x in p[1][-3:]:
if x in ('l', 'L'):
lCount += 1
elif x in ('u', 'U'):
uCount += 1
t = ''
if uCount > 1:
raise ValueError('Constant cannot have more than one u/U suffix.')
elif lCount > 2:
raise ValueError('Constant cannot have more than two l/L suffix.')
prefix = 'unsigned ' * uCount + 'long ' * lCount
p[0] = c_ast.Constant(
prefix + 'int', p[1], self._token_coord(p, 1))
def p_constant_2(self, p):
""" constant : FLOAT_CONST
| HEX_FLOAT_CONST
"""
if 'x' in p[1].lower():
t = 'float'
else:
if p[1][-1] in ('f', 'F'):
t = 'float'
elif p[1][-1] in ('l', 'L'):
t = 'long double'
else:
t = 'double'
p[0] = c_ast.Constant(
t, p[1], self._token_coord(p, 1))
def p_constant_3(self, p):
""" constant : CHAR_CONST
| WCHAR_CONST
| U8CHAR_CONST
| U16CHAR_CONST
| U32CHAR_CONST
"""
p[0] = c_ast.Constant(
'char', p[1], self._token_coord(p, 1))
# The "unified" string and wstring literal rules are for supporting
# concatenation of adjacent string literals.
# I.e. "hello " "world" is seen by the C compiler as a single string literal
# with the value "hello world"
#
def p_unified_string_literal(self, p):
""" unified_string_literal : STRING_LITERAL
| unified_string_literal STRING_LITERAL
"""
if len(p) == 2: # single literal
p[0] = c_ast.Constant(
'string', p[1], self._token_coord(p, 1))
else:
p[1].value = p[1].value[:-1] + p[2][1:]
p[0] = p[1]
def p_unified_wstring_literal(self, p):
""" unified_wstring_literal : WSTRING_LITERAL
| U8STRING_LITERAL
| U16STRING_LITERAL
| U32STRING_LITERAL
| unified_wstring_literal WSTRING_LITERAL
| unified_wstring_literal U8STRING_LITERAL
| unified_wstring_literal U16STRING_LITERAL
| unified_wstring_literal U32STRING_LITERAL
"""
if len(p) == 2: # single literal
p[0] = c_ast.Constant(
'string', p[1], self._token_coord(p, 1))
else:
p[1].value = p[1].value.rstrip()[:-1] + p[2][2:]
p[0] = p[1]
def p_brace_open(self, p):
""" brace_open : LBRACE
"""
p[0] = p[1]
p.set_lineno(0, p.lineno(1))
def p_brace_close(self, p):
""" brace_close : RBRACE
"""
p[0] = p[1]
p.set_lineno(0, p.lineno(1))
def p_empty(self, p):
'empty : '
p[0] = None
def p_error(self, p):
# If error recovery is added here in the future, make sure
# _get_yacc_lookahead_token still works!
#
if p:
self._parse_error(
'before: %s' % p.value,
self._coord(lineno=p.lineno,
column=self.clex.find_tok_column(p)))
else:
self._parse_error('At end of input', self.clex.filename)
| 73,680 | Python | 37.03872 | 134 | 0.525841 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/c_generator.py | #------------------------------------------------------------------------------
# pycparser: c_generator.py
#
# C code generator from pycparser AST nodes.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#------------------------------------------------------------------------------
from . import c_ast
class CGenerator(object):
""" Uses the same visitor pattern as c_ast.NodeVisitor, but modified to
return a value from each visit method, using string accumulation in
generic_visit.
"""
def __init__(self, reduce_parentheses=False):
""" Constructs C-code generator
reduce_parentheses:
if True, eliminates needless parentheses on binary operators
"""
# Statements start with indentation of self.indent_level spaces, using
# the _make_indent method.
self.indent_level = 0
self.reduce_parentheses = reduce_parentheses
def _make_indent(self):
return ' ' * self.indent_level
def visit(self, node):
method = 'visit_' + node.__class__.__name__
return getattr(self, method, self.generic_visit)(node)
def generic_visit(self, node):
if node is None:
return ''
else:
return ''.join(self.visit(c) for c_name, c in node.children())
def visit_Constant(self, n):
return n.value
def visit_ID(self, n):
return n.name
def visit_Pragma(self, n):
ret = '#pragma'
if n.string:
ret += ' ' + n.string
return ret
def visit_ArrayRef(self, n):
arrref = self._parenthesize_unless_simple(n.name)
return arrref + '[' + self.visit(n.subscript) + ']'
def visit_StructRef(self, n):
sref = self._parenthesize_unless_simple(n.name)
return sref + n.type + self.visit(n.field)
def visit_FuncCall(self, n):
fref = self._parenthesize_unless_simple(n.name)
return fref + '(' + self.visit(n.args) + ')'
def visit_UnaryOp(self, n):
if n.op == 'sizeof':
# Always parenthesize the argument of sizeof since it can be
# a name.
return 'sizeof(%s)' % self.visit(n.expr)
else:
operand = self._parenthesize_unless_simple(n.expr)
if n.op == 'p++':
return '%s++' % operand
elif n.op == 'p--':
return '%s--' % operand
else:
return '%s%s' % (n.op, operand)
# Precedence map of binary operators:
precedence_map = {
# Should be in sync with c_parser.CParser.precedence
# Higher numbers are stronger binding
'||': 0, # weakest binding
'&&': 1,
'|': 2,
'^': 3,
'&': 4,
'==': 5, '!=': 5,
'>': 6, '>=': 6, '<': 6, '<=': 6,
'>>': 7, '<<': 7,
'+': 8, '-': 8,
'*': 9, '/': 9, '%': 9 # strongest binding
}
def visit_BinaryOp(self, n):
# Note: all binary operators are left-to-right associative
#
# If `n.left.op` has a stronger or equally binding precedence in
# comparison to `n.op`, no parenthesis are needed for the left:
# e.g., `(a*b) + c` is equivalent to `a*b + c`, as well as
# `(a+b) - c` is equivalent to `a+b - c` (same precedence).
# If the left operator is weaker binding than the current, then
# parentheses are necessary:
# e.g., `(a+b) * c` is NOT equivalent to `a+b * c`.
lval_str = self._parenthesize_if(
n.left,
lambda d: not (self._is_simple_node(d) or
self.reduce_parentheses and isinstance(d, c_ast.BinaryOp) and
self.precedence_map[d.op] >= self.precedence_map[n.op]))
# If `n.right.op` has a stronger -but not equal- binding precedence,
# parenthesis can be omitted on the right:
# e.g., `a + (b*c)` is equivalent to `a + b*c`.
# If the right operator is weaker or equally binding, then parentheses
# are necessary:
# e.g., `a * (b+c)` is NOT equivalent to `a * b+c` and
# `a - (b+c)` is NOT equivalent to `a - b+c` (same precedence).
rval_str = self._parenthesize_if(
n.right,
lambda d: not (self._is_simple_node(d) or
self.reduce_parentheses and isinstance(d, c_ast.BinaryOp) and
self.precedence_map[d.op] > self.precedence_map[n.op]))
return '%s %s %s' % (lval_str, n.op, rval_str)
def visit_Assignment(self, n):
rval_str = self._parenthesize_if(
n.rvalue,
lambda n: isinstance(n, c_ast.Assignment))
return '%s %s %s' % (self.visit(n.lvalue), n.op, rval_str)
def visit_IdentifierType(self, n):
return ' '.join(n.names)
def _visit_expr(self, n):
if isinstance(n, c_ast.InitList):
return '{' + self.visit(n) + '}'
elif isinstance(n, c_ast.ExprList):
return '(' + self.visit(n) + ')'
else:
return self.visit(n)
def visit_Decl(self, n, no_type=False):
# no_type is used when a Decl is part of a DeclList, where the type is
# explicitly only for the first declaration in a list.
#
s = n.name if no_type else self._generate_decl(n)
if n.bitsize: s += ' : ' + self.visit(n.bitsize)
if n.init:
s += ' = ' + self._visit_expr(n.init)
return s
def visit_DeclList(self, n):
s = self.visit(n.decls[0])
if len(n.decls) > 1:
s += ', ' + ', '.join(self.visit_Decl(decl, no_type=True)
for decl in n.decls[1:])
return s
def visit_Typedef(self, n):
s = ''
if n.storage: s += ' '.join(n.storage) + ' '
s += self._generate_type(n.type)
return s
def visit_Cast(self, n):
s = '(' + self._generate_type(n.to_type, emit_declname=False) + ')'
return s + ' ' + self._parenthesize_unless_simple(n.expr)
def visit_ExprList(self, n):
visited_subexprs = []
for expr in n.exprs:
visited_subexprs.append(self._visit_expr(expr))
return ', '.join(visited_subexprs)
def visit_InitList(self, n):
visited_subexprs = []
for expr in n.exprs:
visited_subexprs.append(self._visit_expr(expr))
return ', '.join(visited_subexprs)
def visit_Enum(self, n):
return self._generate_struct_union_enum(n, name='enum')
def visit_Alignas(self, n):
return '_Alignas({})'.format(self.visit(n.alignment))
def visit_Enumerator(self, n):
if not n.value:
return '{indent}{name},\n'.format(
indent=self._make_indent(),
name=n.name,
)
else:
return '{indent}{name} = {value},\n'.format(
indent=self._make_indent(),
name=n.name,
value=self.visit(n.value),
)
def visit_FuncDef(self, n):
decl = self.visit(n.decl)
self.indent_level = 0
body = self.visit(n.body)
if n.param_decls:
knrdecls = ';\n'.join(self.visit(p) for p in n.param_decls)
return decl + '\n' + knrdecls + ';\n' + body + '\n'
else:
return decl + '\n' + body + '\n'
def visit_FileAST(self, n):
s = ''
for ext in n.ext:
if isinstance(ext, c_ast.FuncDef):
s += self.visit(ext)
elif isinstance(ext, c_ast.Pragma):
s += self.visit(ext) + '\n'
else:
s += self.visit(ext) + ';\n'
return s
def visit_Compound(self, n):
s = self._make_indent() + '{\n'
self.indent_level += 2
if n.block_items:
s += ''.join(self._generate_stmt(stmt) for stmt in n.block_items)
self.indent_level -= 2
s += self._make_indent() + '}\n'
return s
def visit_CompoundLiteral(self, n):
return '(' + self.visit(n.type) + '){' + self.visit(n.init) + '}'
def visit_EmptyStatement(self, n):
return ';'
def visit_ParamList(self, n):
return ', '.join(self.visit(param) for param in n.params)
def visit_Return(self, n):
s = 'return'
if n.expr: s += ' ' + self.visit(n.expr)
return s + ';'
def visit_Break(self, n):
return 'break;'
def visit_Continue(self, n):
return 'continue;'
def visit_TernaryOp(self, n):
s = '(' + self._visit_expr(n.cond) + ') ? '
s += '(' + self._visit_expr(n.iftrue) + ') : '
s += '(' + self._visit_expr(n.iffalse) + ')'
return s
def visit_If(self, n):
s = 'if ('
if n.cond: s += self.visit(n.cond)
s += ')\n'
s += self._generate_stmt(n.iftrue, add_indent=True)
if n.iffalse:
s += self._make_indent() + 'else\n'
s += self._generate_stmt(n.iffalse, add_indent=True)
return s
def visit_For(self, n):
s = 'for ('
if n.init: s += self.visit(n.init)
s += ';'
if n.cond: s += ' ' + self.visit(n.cond)
s += ';'
if n.next: s += ' ' + self.visit(n.next)
s += ')\n'
s += self._generate_stmt(n.stmt, add_indent=True)
return s
def visit_While(self, n):
s = 'while ('
if n.cond: s += self.visit(n.cond)
s += ')\n'
s += self._generate_stmt(n.stmt, add_indent=True)
return s
def visit_DoWhile(self, n):
s = 'do\n'
s += self._generate_stmt(n.stmt, add_indent=True)
s += self._make_indent() + 'while ('
if n.cond: s += self.visit(n.cond)
s += ');'
return s
def visit_StaticAssert(self, n):
s = '_Static_assert('
s += self.visit(n.cond)
if n.message:
s += ','
s += self.visit(n.message)
s += ')'
return s
def visit_Switch(self, n):
s = 'switch (' + self.visit(n.cond) + ')\n'
s += self._generate_stmt(n.stmt, add_indent=True)
return s
def visit_Case(self, n):
s = 'case ' + self.visit(n.expr) + ':\n'
for stmt in n.stmts:
s += self._generate_stmt(stmt, add_indent=True)
return s
def visit_Default(self, n):
s = 'default:\n'
for stmt in n.stmts:
s += self._generate_stmt(stmt, add_indent=True)
return s
def visit_Label(self, n):
return n.name + ':\n' + self._generate_stmt(n.stmt)
def visit_Goto(self, n):
return 'goto ' + n.name + ';'
def visit_EllipsisParam(self, n):
return '...'
def visit_Struct(self, n):
return self._generate_struct_union_enum(n, 'struct')
def visit_Typename(self, n):
return self._generate_type(n.type)
def visit_Union(self, n):
return self._generate_struct_union_enum(n, 'union')
def visit_NamedInitializer(self, n):
s = ''
for name in n.name:
if isinstance(name, c_ast.ID):
s += '.' + name.name
else:
s += '[' + self.visit(name) + ']'
s += ' = ' + self._visit_expr(n.expr)
return s
def visit_FuncDecl(self, n):
return self._generate_type(n)
def visit_ArrayDecl(self, n):
return self._generate_type(n, emit_declname=False)
def visit_TypeDecl(self, n):
return self._generate_type(n, emit_declname=False)
def visit_PtrDecl(self, n):
return self._generate_type(n, emit_declname=False)
def _generate_struct_union_enum(self, n, name):
""" Generates code for structs, unions, and enums. name should be
'struct', 'union', or 'enum'.
"""
if name in ('struct', 'union'):
members = n.decls
body_function = self._generate_struct_union_body
else:
assert name == 'enum'
members = None if n.values is None else n.values.enumerators
body_function = self._generate_enum_body
s = name + ' ' + (n.name or '')
if members is not None:
# None means no members
# Empty sequence means an empty list of members
s += '\n'
s += self._make_indent()
self.indent_level += 2
s += '{\n'
s += body_function(members)
self.indent_level -= 2
s += self._make_indent() + '}'
return s
def _generate_struct_union_body(self, members):
return ''.join(self._generate_stmt(decl) for decl in members)
def _generate_enum_body(self, members):
# `[:-2] + '\n'` removes the final `,` from the enumerator list
return ''.join(self.visit(value) for value in members)[:-2] + '\n'
def _generate_stmt(self, n, add_indent=False):
""" Generation from a statement node. This method exists as a wrapper
for individual visit_* methods to handle different treatment of
some statements in this context.
"""
typ = type(n)
if add_indent: self.indent_level += 2
indent = self._make_indent()
if add_indent: self.indent_level -= 2
if typ in (
c_ast.Decl, c_ast.Assignment, c_ast.Cast, c_ast.UnaryOp,
c_ast.BinaryOp, c_ast.TernaryOp, c_ast.FuncCall, c_ast.ArrayRef,
c_ast.StructRef, c_ast.Constant, c_ast.ID, c_ast.Typedef,
c_ast.ExprList):
# These can also appear in an expression context so no semicolon
# is added to them automatically
#
return indent + self.visit(n) + ';\n'
elif typ in (c_ast.Compound,):
# No extra indentation required before the opening brace of a
# compound - because it consists of multiple lines it has to
# compute its own indentation.
#
return self.visit(n)
elif typ in (c_ast.If,):
return indent + self.visit(n)
else:
return indent + self.visit(n) + '\n'
def _generate_decl(self, n):
""" Generation from a Decl node.
"""
s = ''
if n.funcspec: s = ' '.join(n.funcspec) + ' '
if n.storage: s += ' '.join(n.storage) + ' '
if n.align: s += self.visit(n.align[0]) + ' '
s += self._generate_type(n.type)
return s
def _generate_type(self, n, modifiers=[], emit_declname = True):
""" Recursive generation from a type node. n is the type node.
modifiers collects the PtrDecl, ArrayDecl and FuncDecl modifiers
encountered on the way down to a TypeDecl, to allow proper
generation from it.
"""
typ = type(n)
#~ print(n, modifiers)
if typ == c_ast.TypeDecl:
s = ''
if n.quals: s += ' '.join(n.quals) + ' '
s += self.visit(n.type)
nstr = n.declname if n.declname and emit_declname else ''
# Resolve modifiers.
# Wrap in parens to distinguish pointer to array and pointer to
# function syntax.
#
for i, modifier in enumerate(modifiers):
if isinstance(modifier, c_ast.ArrayDecl):
if (i != 0 and
isinstance(modifiers[i - 1], c_ast.PtrDecl)):
nstr = '(' + nstr + ')'
nstr += '['
if modifier.dim_quals:
nstr += ' '.join(modifier.dim_quals) + ' '
nstr += self.visit(modifier.dim) + ']'
elif isinstance(modifier, c_ast.FuncDecl):
if (i != 0 and
isinstance(modifiers[i - 1], c_ast.PtrDecl)):
nstr = '(' + nstr + ')'
nstr += '(' + self.visit(modifier.args) + ')'
elif isinstance(modifier, c_ast.PtrDecl):
if modifier.quals:
nstr = '* %s%s' % (' '.join(modifier.quals),
' ' + nstr if nstr else '')
else:
nstr = '*' + nstr
if nstr: s += ' ' + nstr
return s
elif typ == c_ast.Decl:
return self._generate_decl(n.type)
elif typ == c_ast.Typename:
return self._generate_type(n.type, emit_declname = emit_declname)
elif typ == c_ast.IdentifierType:
return ' '.join(n.names) + ' '
elif typ in (c_ast.ArrayDecl, c_ast.PtrDecl, c_ast.FuncDecl):
return self._generate_type(n.type, modifiers + [n],
emit_declname = emit_declname)
else:
return self.visit(n)
def _parenthesize_if(self, n, condition):
""" Visits 'n' and returns its string representation, parenthesized
if the condition function applied to the node returns True.
"""
s = self._visit_expr(n)
if condition(n):
return '(' + s + ')'
else:
return s
def _parenthesize_unless_simple(self, n):
""" Common use case for _parenthesize_if
"""
return self._parenthesize_if(n, lambda d: not self._is_simple_node(d))
def _is_simple_node(self, n):
""" Returns True for nodes that are "simple" - i.e. nodes that always
have higher precedence than operators.
"""
return isinstance(n, (c_ast.Constant, c_ast.ID, c_ast.ArrayRef,
c_ast.StructRef, c_ast.FuncCall))
| 17,772 | Python | 34.333996 | 83 | 0.507934 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/plyparser.py | #-----------------------------------------------------------------
# plyparser.py
#
# PLYParser class and other utilities for simplifying programming
# parsers with PLY
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#-----------------------------------------------------------------
import warnings
class Coord(object):
""" Coordinates of a syntactic element. Consists of:
- File name
- Line number
- (optional) column number, for the Lexer
"""
__slots__ = ('file', 'line', 'column', '__weakref__')
def __init__(self, file, line, column=None):
self.file = file
self.line = line
self.column = column
def __str__(self):
str = "%s:%s" % (self.file, self.line)
if self.column: str += ":%s" % self.column
return str
class ParseError(Exception): pass
class PLYParser(object):
def _create_opt_rule(self, rulename):
""" Given a rule name, creates an optional ply.yacc rule
for it. The name of the optional rule is
<rulename>_opt
"""
optname = rulename + '_opt'
def optrule(self, p):
p[0] = p[1]
optrule.__doc__ = '%s : empty\n| %s' % (optname, rulename)
optrule.__name__ = 'p_%s' % optname
setattr(self.__class__, optrule.__name__, optrule)
def _coord(self, lineno, column=None):
return Coord(
file=self.clex.filename,
line=lineno,
column=column)
def _token_coord(self, p, token_idx):
""" Returns the coordinates for the YaccProduction object 'p' indexed
with 'token_idx'. The coordinate includes the 'lineno' and
'column'. Both follow the lex semantic, starting from 1.
"""
last_cr = p.lexer.lexer.lexdata.rfind('\n', 0, p.lexpos(token_idx))
if last_cr < 0:
last_cr = -1
column = (p.lexpos(token_idx) - (last_cr))
return self._coord(p.lineno(token_idx), column)
def _parse_error(self, msg, coord):
raise ParseError("%s: %s" % (coord, msg))
def parameterized(*params):
""" Decorator to create parameterized rules.
Parameterized rule methods must be named starting with 'p_' and contain
'xxx', and their docstrings may contain 'xxx' and 'yyy'. These will be
replaced by the given parameter tuples. For example, ``p_xxx_rule()`` with
docstring 'xxx_rule : yyy' when decorated with
``@parameterized(('id', 'ID'))`` produces ``p_id_rule()`` with the docstring
'id_rule : ID'. Using multiple tuples produces multiple rules.
"""
def decorate(rule_func):
rule_func._params = params
return rule_func
return decorate
def template(cls):
""" Class decorator to generate rules from parameterized rule templates.
See `parameterized` for more information on parameterized rules.
"""
issued_nodoc_warning = False
for attr_name in dir(cls):
if attr_name.startswith('p_'):
method = getattr(cls, attr_name)
if hasattr(method, '_params'):
# Remove the template method
delattr(cls, attr_name)
# Create parameterized rules from this method; only run this if
# the method has a docstring. This is to address an issue when
# pycparser's users are installed in -OO mode which strips
# docstrings away.
# See: https://github.com/eliben/pycparser/pull/198/ and
# https://github.com/eliben/pycparser/issues/197
# for discussion.
if method.__doc__ is not None:
_create_param_rules(cls, method)
elif not issued_nodoc_warning:
warnings.warn(
'parsing methods must have __doc__ for pycparser to work properly',
RuntimeWarning,
stacklevel=2)
issued_nodoc_warning = True
return cls
def _create_param_rules(cls, func):
""" Create ply.yacc rules based on a parameterized rule function
Generates new methods (one per each pair of parameters) based on the
template rule function `func`, and attaches them to `cls`. The rule
function's parameters must be accessible via its `_params` attribute.
"""
for xxx, yyy in func._params:
# Use the template method's body for each new method
def param_rule(self, p):
func(self, p)
# Substitute in the params for the grammar rule and function name
param_rule.__doc__ = func.__doc__.replace('xxx', xxx).replace('yyy', yyy)
param_rule.__name__ = func.__name__.replace('xxx', xxx)
# Attach the new method to the class
setattr(cls, param_rule.__name__, param_rule)
| 4,875 | Python | 35.388059 | 91 | 0.568615 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ast_transforms.py | #------------------------------------------------------------------------------
# pycparser: ast_transforms.py
#
# Some utilities used by the parser to create a friendlier AST.
#
# Eli Bendersky [https://eli.thegreenplace.net/]
# License: BSD
#------------------------------------------------------------------------------
from . import c_ast
def fix_switch_cases(switch_node):
""" The 'case' statements in a 'switch' come out of parsing with one
child node, so subsequent statements are just tucked to the parent
Compound. Additionally, consecutive (fall-through) case statements
come out messy. This is a peculiarity of the C grammar. The following:
switch (myvar) {
case 10:
k = 10;
p = k + 1;
return 10;
case 20:
case 30:
return 20;
default:
break;
}
Creates this tree (pseudo-dump):
Switch
ID: myvar
Compound:
Case 10:
k = 10
p = k + 1
return 10
Case 20:
Case 30:
return 20
Default:
break
The goal of this transform is to fix this mess, turning it into the
following:
Switch
ID: myvar
Compound:
Case 10:
k = 10
p = k + 1
return 10
Case 20:
Case 30:
return 20
Default:
break
A fixed AST node is returned. The argument may be modified.
"""
assert isinstance(switch_node, c_ast.Switch)
if not isinstance(switch_node.stmt, c_ast.Compound):
return switch_node
# The new Compound child for the Switch, which will collect children in the
# correct order
new_compound = c_ast.Compound([], switch_node.stmt.coord)
# The last Case/Default node
last_case = None
# Goes over the children of the Compound below the Switch, adding them
# either directly below new_compound or below the last Case as appropriate
# (for `switch(cond) {}`, block_items would have been None)
for child in (switch_node.stmt.block_items or []):
if isinstance(child, (c_ast.Case, c_ast.Default)):
# If it's a Case/Default:
# 1. Add it to the Compound and mark as "last case"
# 2. If its immediate child is also a Case or Default, promote it
# to a sibling.
new_compound.block_items.append(child)
_extract_nested_case(child, new_compound.block_items)
last_case = new_compound.block_items[-1]
else:
# Other statements are added as children to the last case, if it
# exists.
if last_case is None:
new_compound.block_items.append(child)
else:
last_case.stmts.append(child)
switch_node.stmt = new_compound
return switch_node
def _extract_nested_case(case_node, stmts_list):
""" Recursively extract consecutive Case statements that are made nested
by the parser and add them to the stmts_list.
"""
if isinstance(case_node.stmts[0], (c_ast.Case, c_ast.Default)):
stmts_list.append(case_node.stmts.pop())
_extract_nested_case(stmts_list[-1], stmts_list)
def fix_atomic_specifiers(decl):
""" Atomic specifiers like _Atomic(type) are unusually structured,
conferring a qualifier upon the contained type.
This function fixes a decl with atomic specifiers to have a sane AST
structure, by removing spurious Typename->TypeDecl pairs and attaching
the _Atomic qualifier in the right place.
"""
# There can be multiple levels of _Atomic in a decl; fix them until a
# fixed point is reached.
while True:
decl, found = _fix_atomic_specifiers_once(decl)
if not found:
break
# Make sure to add an _Atomic qual on the topmost decl if needed. Also
# restore the declname on the innermost TypeDecl (it gets placed in the
# wrong place during construction).
typ = decl
while not isinstance(typ, c_ast.TypeDecl):
try:
typ = typ.type
except AttributeError:
return decl
if '_Atomic' in typ.quals and '_Atomic' not in decl.quals:
decl.quals.append('_Atomic')
if typ.declname is None:
typ.declname = decl.name
return decl
def _fix_atomic_specifiers_once(decl):
""" Performs one 'fix' round of atomic specifiers.
Returns (modified_decl, found) where found is True iff a fix was made.
"""
parent = decl
grandparent = None
node = decl.type
while node is not None:
if isinstance(node, c_ast.Typename) and '_Atomic' in node.quals:
break
try:
grandparent = parent
parent = node
node = node.type
except AttributeError:
# If we've reached a node without a `type` field, it means we won't
# find what we're looking for at this point; give up the search
# and return the original decl unmodified.
return decl, False
assert isinstance(parent, c_ast.TypeDecl)
grandparent.type = node.type
if '_Atomic' not in node.type.quals:
node.type.quals.append('_Atomic')
return decl, True
| 5,691 | Python | 33.496969 | 79 | 0.54718 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ply/cpp.py | # -----------------------------------------------------------------------------
# cpp.py
#
# Author: David Beazley (http://www.dabeaz.com)
# Copyright (C) 2017
# All rights reserved
#
# This module implements an ANSI-C style lexical preprocessor for PLY.
# -----------------------------------------------------------------------------
import sys
# Some Python 3 compatibility shims
if sys.version_info.major < 3:
STRING_TYPES = (str, unicode)
else:
STRING_TYPES = str
xrange = range
# -----------------------------------------------------------------------------
# Default preprocessor lexer definitions. These tokens are enough to get
# a basic preprocessor working. Other modules may import these if they want
# -----------------------------------------------------------------------------
tokens = (
'CPP_ID','CPP_INTEGER', 'CPP_FLOAT', 'CPP_STRING', 'CPP_CHAR', 'CPP_WS', 'CPP_COMMENT1', 'CPP_COMMENT2', 'CPP_POUND','CPP_DPOUND'
)
literals = "+-*/%|&~^<>=!?()[]{}.,;:\\\'\""
# Whitespace
def t_CPP_WS(t):
r'\s+'
t.lexer.lineno += t.value.count("\n")
return t
t_CPP_POUND = r'\#'
t_CPP_DPOUND = r'\#\#'
# Identifier
t_CPP_ID = r'[A-Za-z_][\w_]*'
# Integer literal
def CPP_INTEGER(t):
r'(((((0x)|(0X))[0-9a-fA-F]+)|(\d+))([uU][lL]|[lL][uU]|[uU]|[lL])?)'
return t
t_CPP_INTEGER = CPP_INTEGER
# Floating literal
t_CPP_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
# String literal
def t_CPP_STRING(t):
r'\"([^\\\n]|(\\(.|\n)))*?\"'
t.lexer.lineno += t.value.count("\n")
return t
# Character constant 'c' or L'c'
def t_CPP_CHAR(t):
r'(L)?\'([^\\\n]|(\\(.|\n)))*?\''
t.lexer.lineno += t.value.count("\n")
return t
# Comment
def t_CPP_COMMENT1(t):
r'(/\*(.|\n)*?\*/)'
ncr = t.value.count("\n")
t.lexer.lineno += ncr
# replace with one space or a number of '\n'
t.type = 'CPP_WS'; t.value = '\n' * ncr if ncr else ' '
return t
# Line comment
def t_CPP_COMMENT2(t):
r'(//.*?(\n|$))'
# replace with '/n'
t.type = 'CPP_WS'; t.value = '\n'
return t
def t_error(t):
t.type = t.value[0]
t.value = t.value[0]
t.lexer.skip(1)
return t
import re
import copy
import time
import os.path
# -----------------------------------------------------------------------------
# trigraph()
#
# Given an input string, this function replaces all trigraph sequences.
# The following mapping is used:
#
# ??= #
# ??/ \
# ??' ^
# ??( [
# ??) ]
# ??! |
# ??< {
# ??> }
# ??- ~
# -----------------------------------------------------------------------------
_trigraph_pat = re.compile(r'''\?\?[=/\'\(\)\!<>\-]''')
_trigraph_rep = {
'=':'#',
'/':'\\',
"'":'^',
'(':'[',
')':']',
'!':'|',
'<':'{',
'>':'}',
'-':'~'
}
def trigraph(input):
return _trigraph_pat.sub(lambda g: _trigraph_rep[g.group()[-1]],input)
# ------------------------------------------------------------------
# Macro object
#
# This object holds information about preprocessor macros
#
# .name - Macro name (string)
# .value - Macro value (a list of tokens)
# .arglist - List of argument names
# .variadic - Boolean indicating whether or not variadic macro
# .vararg - Name of the variadic parameter
#
# When a macro is created, the macro replacement token sequence is
# pre-scanned and used to create patch lists that are later used
# during macro expansion
# ------------------------------------------------------------------
class Macro(object):
def __init__(self,name,value,arglist=None,variadic=False):
self.name = name
self.value = value
self.arglist = arglist
self.variadic = variadic
if variadic:
self.vararg = arglist[-1]
self.source = None
# ------------------------------------------------------------------
# Preprocessor object
#
# Object representing a preprocessor. Contains macro definitions,
# include directories, and other information
# ------------------------------------------------------------------
class Preprocessor(object):
def __init__(self,lexer=None):
if lexer is None:
lexer = lex.lexer
self.lexer = lexer
self.macros = { }
self.path = []
self.temp_path = []
# Probe the lexer for selected tokens
self.lexprobe()
tm = time.localtime()
self.define("__DATE__ \"%s\"" % time.strftime("%b %d %Y",tm))
self.define("__TIME__ \"%s\"" % time.strftime("%H:%M:%S",tm))
self.parser = None
# -----------------------------------------------------------------------------
# tokenize()
#
# Utility function. Given a string of text, tokenize into a list of tokens
# -----------------------------------------------------------------------------
def tokenize(self,text):
tokens = []
self.lexer.input(text)
while True:
tok = self.lexer.token()
if not tok: break
tokens.append(tok)
return tokens
# ---------------------------------------------------------------------
# error()
#
# Report a preprocessor error/warning of some kind
# ----------------------------------------------------------------------
def error(self,file,line,msg):
print("%s:%d %s" % (file,line,msg))
# ----------------------------------------------------------------------
# lexprobe()
#
# This method probes the preprocessor lexer object to discover
# the token types of symbols that are important to the preprocessor.
# If this works right, the preprocessor will simply "work"
# with any suitable lexer regardless of how tokens have been named.
# ----------------------------------------------------------------------
def lexprobe(self):
# Determine the token type for identifiers
self.lexer.input("identifier")
tok = self.lexer.token()
if not tok or tok.value != "identifier":
print("Couldn't determine identifier type")
else:
self.t_ID = tok.type
# Determine the token type for integers
self.lexer.input("12345")
tok = self.lexer.token()
if not tok or int(tok.value) != 12345:
print("Couldn't determine integer type")
else:
self.t_INTEGER = tok.type
self.t_INTEGER_TYPE = type(tok.value)
# Determine the token type for strings enclosed in double quotes
self.lexer.input("\"filename\"")
tok = self.lexer.token()
if not tok or tok.value != "\"filename\"":
print("Couldn't determine string type")
else:
self.t_STRING = tok.type
# Determine the token type for whitespace--if any
self.lexer.input(" ")
tok = self.lexer.token()
if not tok or tok.value != " ":
self.t_SPACE = None
else:
self.t_SPACE = tok.type
# Determine the token type for newlines
self.lexer.input("\n")
tok = self.lexer.token()
if not tok or tok.value != "\n":
self.t_NEWLINE = None
print("Couldn't determine token for newlines")
else:
self.t_NEWLINE = tok.type
self.t_WS = (self.t_SPACE, self.t_NEWLINE)
# Check for other characters used by the preprocessor
chars = [ '<','>','#','##','\\','(',')',',','.']
for c in chars:
self.lexer.input(c)
tok = self.lexer.token()
if not tok or tok.value != c:
print("Unable to lex '%s' required for preprocessor" % c)
# ----------------------------------------------------------------------
# add_path()
#
# Adds a search path to the preprocessor.
# ----------------------------------------------------------------------
def add_path(self,path):
self.path.append(path)
# ----------------------------------------------------------------------
# group_lines()
#
# Given an input string, this function splits it into lines. Trailing whitespace
# is removed. Any line ending with \ is grouped with the next line. This
# function forms the lowest level of the preprocessor---grouping into text into
# a line-by-line format.
# ----------------------------------------------------------------------
def group_lines(self,input):
lex = self.lexer.clone()
lines = [x.rstrip() for x in input.splitlines()]
for i in xrange(len(lines)):
j = i+1
while lines[i].endswith('\\') and (j < len(lines)):
lines[i] = lines[i][:-1]+lines[j]
lines[j] = ""
j += 1
input = "\n".join(lines)
lex.input(input)
lex.lineno = 1
current_line = []
while True:
tok = lex.token()
if not tok:
break
current_line.append(tok)
if tok.type in self.t_WS and '\n' in tok.value:
yield current_line
current_line = []
if current_line:
yield current_line
# ----------------------------------------------------------------------
# tokenstrip()
#
# Remove leading/trailing whitespace tokens from a token list
# ----------------------------------------------------------------------
def tokenstrip(self,tokens):
i = 0
while i < len(tokens) and tokens[i].type in self.t_WS:
i += 1
del tokens[:i]
i = len(tokens)-1
while i >= 0 and tokens[i].type in self.t_WS:
i -= 1
del tokens[i+1:]
return tokens
# ----------------------------------------------------------------------
# collect_args()
#
# Collects comma separated arguments from a list of tokens. The arguments
# must be enclosed in parenthesis. Returns a tuple (tokencount,args,positions)
# where tokencount is the number of tokens consumed, args is a list of arguments,
# and positions is a list of integers containing the starting index of each
# argument. Each argument is represented by a list of tokens.
#
# When collecting arguments, leading and trailing whitespace is removed
# from each argument.
#
# This function properly handles nested parenthesis and commas---these do not
# define new arguments.
# ----------------------------------------------------------------------
def collect_args(self,tokenlist):
args = []
positions = []
current_arg = []
nesting = 1
tokenlen = len(tokenlist)
# Search for the opening '('.
i = 0
while (i < tokenlen) and (tokenlist[i].type in self.t_WS):
i += 1
if (i < tokenlen) and (tokenlist[i].value == '('):
positions.append(i+1)
else:
self.error(self.source,tokenlist[0].lineno,"Missing '(' in macro arguments")
return 0, [], []
i += 1
while i < tokenlen:
t = tokenlist[i]
if t.value == '(':
current_arg.append(t)
nesting += 1
elif t.value == ')':
nesting -= 1
if nesting == 0:
if current_arg:
args.append(self.tokenstrip(current_arg))
positions.append(i)
return i+1,args,positions
current_arg.append(t)
elif t.value == ',' and nesting == 1:
args.append(self.tokenstrip(current_arg))
positions.append(i+1)
current_arg = []
else:
current_arg.append(t)
i += 1
# Missing end argument
self.error(self.source,tokenlist[-1].lineno,"Missing ')' in macro arguments")
return 0, [],[]
# ----------------------------------------------------------------------
# macro_prescan()
#
# Examine the macro value (token sequence) and identify patch points
# This is used to speed up macro expansion later on---we'll know
# right away where to apply patches to the value to form the expansion
# ----------------------------------------------------------------------
def macro_prescan(self,macro):
macro.patch = [] # Standard macro arguments
macro.str_patch = [] # String conversion expansion
macro.var_comma_patch = [] # Variadic macro comma patch
i = 0
while i < len(macro.value):
if macro.value[i].type == self.t_ID and macro.value[i].value in macro.arglist:
argnum = macro.arglist.index(macro.value[i].value)
# Conversion of argument to a string
if i > 0 and macro.value[i-1].value == '#':
macro.value[i] = copy.copy(macro.value[i])
macro.value[i].type = self.t_STRING
del macro.value[i-1]
macro.str_patch.append((argnum,i-1))
continue
# Concatenation
elif (i > 0 and macro.value[i-1].value == '##'):
macro.patch.append(('c',argnum,i-1))
del macro.value[i-1]
continue
elif ((i+1) < len(macro.value) and macro.value[i+1].value == '##'):
macro.patch.append(('c',argnum,i))
i += 1
continue
# Standard expansion
else:
macro.patch.append(('e',argnum,i))
elif macro.value[i].value == '##':
if macro.variadic and (i > 0) and (macro.value[i-1].value == ',') and \
((i+1) < len(macro.value)) and (macro.value[i+1].type == self.t_ID) and \
(macro.value[i+1].value == macro.vararg):
macro.var_comma_patch.append(i-1)
i += 1
macro.patch.sort(key=lambda x: x[2],reverse=True)
# ----------------------------------------------------------------------
# macro_expand_args()
#
# Given a Macro and list of arguments (each a token list), this method
# returns an expanded version of a macro. The return value is a token sequence
# representing the replacement macro tokens
# ----------------------------------------------------------------------
def macro_expand_args(self,macro,args):
# Make a copy of the macro token sequence
rep = [copy.copy(_x) for _x in macro.value]
# Make string expansion patches. These do not alter the length of the replacement sequence
str_expansion = {}
for argnum, i in macro.str_patch:
if argnum not in str_expansion:
str_expansion[argnum] = ('"%s"' % "".join([x.value for x in args[argnum]])).replace("\\","\\\\")
rep[i] = copy.copy(rep[i])
rep[i].value = str_expansion[argnum]
# Make the variadic macro comma patch. If the variadic macro argument is empty, we get rid
comma_patch = False
if macro.variadic and not args[-1]:
for i in macro.var_comma_patch:
rep[i] = None
comma_patch = True
# Make all other patches. The order of these matters. It is assumed that the patch list
# has been sorted in reverse order of patch location since replacements will cause the
# size of the replacement sequence to expand from the patch point.
expanded = { }
for ptype, argnum, i in macro.patch:
# Concatenation. Argument is left unexpanded
if ptype == 'c':
rep[i:i+1] = args[argnum]
# Normal expansion. Argument is macro expanded first
elif ptype == 'e':
if argnum not in expanded:
expanded[argnum] = self.expand_macros(args[argnum])
rep[i:i+1] = expanded[argnum]
# Get rid of removed comma if necessary
if comma_patch:
rep = [_i for _i in rep if _i]
return rep
# ----------------------------------------------------------------------
# expand_macros()
#
# Given a list of tokens, this function performs macro expansion.
# The expanded argument is a dictionary that contains macros already
# expanded. This is used to prevent infinite recursion.
# ----------------------------------------------------------------------
def expand_macros(self,tokens,expanded=None):
if expanded is None:
expanded = {}
i = 0
while i < len(tokens):
t = tokens[i]
if t.type == self.t_ID:
if t.value in self.macros and t.value not in expanded:
# Yes, we found a macro match
expanded[t.value] = True
m = self.macros[t.value]
if not m.arglist:
# A simple macro
ex = self.expand_macros([copy.copy(_x) for _x in m.value],expanded)
for e in ex:
e.lineno = t.lineno
tokens[i:i+1] = ex
i += len(ex)
else:
# A macro with arguments
j = i + 1
while j < len(tokens) and tokens[j].type in self.t_WS:
j += 1
if tokens[j].value == '(':
tokcount,args,positions = self.collect_args(tokens[j:])
if not m.variadic and len(args) != len(m.arglist):
self.error(self.source,t.lineno,"Macro %s requires %d arguments" % (t.value,len(m.arglist)))
i = j + tokcount
elif m.variadic and len(args) < len(m.arglist)-1:
if len(m.arglist) > 2:
self.error(self.source,t.lineno,"Macro %s must have at least %d arguments" % (t.value, len(m.arglist)-1))
else:
self.error(self.source,t.lineno,"Macro %s must have at least %d argument" % (t.value, len(m.arglist)-1))
i = j + tokcount
else:
if m.variadic:
if len(args) == len(m.arglist)-1:
args.append([])
else:
args[len(m.arglist)-1] = tokens[j+positions[len(m.arglist)-1]:j+tokcount-1]
del args[len(m.arglist):]
# Get macro replacement text
rep = self.macro_expand_args(m,args)
rep = self.expand_macros(rep,expanded)
for r in rep:
r.lineno = t.lineno
tokens[i:j+tokcount] = rep
i += len(rep)
del expanded[t.value]
continue
elif t.value == '__LINE__':
t.type = self.t_INTEGER
t.value = self.t_INTEGER_TYPE(t.lineno)
i += 1
return tokens
# ----------------------------------------------------------------------
# evalexpr()
#
# Evaluate an expression token sequence for the purposes of evaluating
# integral expressions.
# ----------------------------------------------------------------------
def evalexpr(self,tokens):
# tokens = tokenize(line)
# Search for defined macros
i = 0
while i < len(tokens):
if tokens[i].type == self.t_ID and tokens[i].value == 'defined':
j = i + 1
needparen = False
result = "0L"
while j < len(tokens):
if tokens[j].type in self.t_WS:
j += 1
continue
elif tokens[j].type == self.t_ID:
if tokens[j].value in self.macros:
result = "1L"
else:
result = "0L"
if not needparen: break
elif tokens[j].value == '(':
needparen = True
elif tokens[j].value == ')':
break
else:
self.error(self.source,tokens[i].lineno,"Malformed defined()")
j += 1
tokens[i].type = self.t_INTEGER
tokens[i].value = self.t_INTEGER_TYPE(result)
del tokens[i+1:j+1]
i += 1
tokens = self.expand_macros(tokens)
for i,t in enumerate(tokens):
if t.type == self.t_ID:
tokens[i] = copy.copy(t)
tokens[i].type = self.t_INTEGER
tokens[i].value = self.t_INTEGER_TYPE("0L")
elif t.type == self.t_INTEGER:
tokens[i] = copy.copy(t)
# Strip off any trailing suffixes
tokens[i].value = str(tokens[i].value)
while tokens[i].value[-1] not in "0123456789abcdefABCDEF":
tokens[i].value = tokens[i].value[:-1]
expr = "".join([str(x.value) for x in tokens])
expr = expr.replace("&&"," and ")
expr = expr.replace("||"," or ")
expr = expr.replace("!"," not ")
try:
result = eval(expr)
except Exception:
self.error(self.source,tokens[0].lineno,"Couldn't evaluate expression")
result = 0
return result
# ----------------------------------------------------------------------
# parsegen()
#
# Parse an input string/
# ----------------------------------------------------------------------
def parsegen(self,input,source=None):
# Replace trigraph sequences
t = trigraph(input)
lines = self.group_lines(t)
if not source:
source = ""
self.define("__FILE__ \"%s\"" % source)
self.source = source
chunk = []
enable = True
iftrigger = False
ifstack = []
for x in lines:
for i,tok in enumerate(x):
if tok.type not in self.t_WS: break
if tok.value == '#':
# Preprocessor directive
# insert necessary whitespace instead of eaten tokens
for tok in x:
if tok.type in self.t_WS and '\n' in tok.value:
chunk.append(tok)
dirtokens = self.tokenstrip(x[i+1:])
if dirtokens:
name = dirtokens[0].value
args = self.tokenstrip(dirtokens[1:])
else:
name = ""
args = []
if name == 'define':
if enable:
for tok in self.expand_macros(chunk):
yield tok
chunk = []
self.define(args)
elif name == 'include':
if enable:
for tok in self.expand_macros(chunk):
yield tok
chunk = []
oldfile = self.macros['__FILE__']
for tok in self.include(args):
yield tok
self.macros['__FILE__'] = oldfile
self.source = source
elif name == 'undef':
if enable:
for tok in self.expand_macros(chunk):
yield tok
chunk = []
self.undef(args)
elif name == 'ifdef':
ifstack.append((enable,iftrigger))
if enable:
if not args[0].value in self.macros:
enable = False
iftrigger = False
else:
iftrigger = True
elif name == 'ifndef':
ifstack.append((enable,iftrigger))
if enable:
if args[0].value in self.macros:
enable = False
iftrigger = False
else:
iftrigger = True
elif name == 'if':
ifstack.append((enable,iftrigger))
if enable:
result = self.evalexpr(args)
if not result:
enable = False
iftrigger = False
else:
iftrigger = True
elif name == 'elif':
if ifstack:
if ifstack[-1][0]: # We only pay attention if outer "if" allows this
if enable: # If already true, we flip enable False
enable = False
elif not iftrigger: # If False, but not triggered yet, we'll check expression
result = self.evalexpr(args)
if result:
enable = True
iftrigger = True
else:
self.error(self.source,dirtokens[0].lineno,"Misplaced #elif")
elif name == 'else':
if ifstack:
if ifstack[-1][0]:
if enable:
enable = False
elif not iftrigger:
enable = True
iftrigger = True
else:
self.error(self.source,dirtokens[0].lineno,"Misplaced #else")
elif name == 'endif':
if ifstack:
enable,iftrigger = ifstack.pop()
else:
self.error(self.source,dirtokens[0].lineno,"Misplaced #endif")
else:
# Unknown preprocessor directive
pass
else:
# Normal text
if enable:
chunk.extend(x)
for tok in self.expand_macros(chunk):
yield tok
chunk = []
# ----------------------------------------------------------------------
# include()
#
# Implementation of file-inclusion
# ----------------------------------------------------------------------
def include(self,tokens):
# Try to extract the filename and then process an include file
if not tokens:
return
if tokens:
if tokens[0].value != '<' and tokens[0].type != self.t_STRING:
tokens = self.expand_macros(tokens)
if tokens[0].value == '<':
# Include <...>
i = 1
while i < len(tokens):
if tokens[i].value == '>':
break
i += 1
else:
print("Malformed #include <...>")
return
filename = "".join([x.value for x in tokens[1:i]])
path = self.path + [""] + self.temp_path
elif tokens[0].type == self.t_STRING:
filename = tokens[0].value[1:-1]
path = self.temp_path + [""] + self.path
else:
print("Malformed #include statement")
return
for p in path:
iname = os.path.join(p,filename)
try:
data = open(iname,"r").read()
dname = os.path.dirname(iname)
if dname:
self.temp_path.insert(0,dname)
for tok in self.parsegen(data,filename):
yield tok
if dname:
del self.temp_path[0]
break
except IOError:
pass
else:
print("Couldn't find '%s'" % filename)
# ----------------------------------------------------------------------
# define()
#
# Define a new macro
# ----------------------------------------------------------------------
def define(self,tokens):
if isinstance(tokens,STRING_TYPES):
tokens = self.tokenize(tokens)
linetok = tokens
try:
name = linetok[0]
if len(linetok) > 1:
mtype = linetok[1]
else:
mtype = None
if not mtype:
m = Macro(name.value,[])
self.macros[name.value] = m
elif mtype.type in self.t_WS:
# A normal macro
m = Macro(name.value,self.tokenstrip(linetok[2:]))
self.macros[name.value] = m
elif mtype.value == '(':
# A macro with arguments
tokcount, args, positions = self.collect_args(linetok[1:])
variadic = False
for a in args:
if variadic:
print("No more arguments may follow a variadic argument")
break
astr = "".join([str(_i.value) for _i in a])
if astr == "...":
variadic = True
a[0].type = self.t_ID
a[0].value = '__VA_ARGS__'
variadic = True
del a[1:]
continue
elif astr[-3:] == "..." and a[0].type == self.t_ID:
variadic = True
del a[1:]
# If, for some reason, "." is part of the identifier, strip off the name for the purposes
# of macro expansion
if a[0].value[-3:] == '...':
a[0].value = a[0].value[:-3]
continue
if len(a) > 1 or a[0].type != self.t_ID:
print("Invalid macro argument")
break
else:
mvalue = self.tokenstrip(linetok[1+tokcount:])
i = 0
while i < len(mvalue):
if i+1 < len(mvalue):
if mvalue[i].type in self.t_WS and mvalue[i+1].value == '##':
del mvalue[i]
continue
elif mvalue[i].value == '##' and mvalue[i+1].type in self.t_WS:
del mvalue[i+1]
i += 1
m = Macro(name.value,mvalue,[x[0].value for x in args],variadic)
self.macro_prescan(m)
self.macros[name.value] = m
else:
print("Bad macro definition")
except LookupError:
print("Bad macro definition")
# ----------------------------------------------------------------------
# undef()
#
# Undefine a macro
# ----------------------------------------------------------------------
def undef(self,tokens):
id = tokens[0].value
try:
del self.macros[id]
except LookupError:
pass
# ----------------------------------------------------------------------
# parse()
#
# Parse input text.
# ----------------------------------------------------------------------
def parse(self,input,source=None,ignore={}):
self.ignore = ignore
self.parser = self.parsegen(input,source)
# ----------------------------------------------------------------------
# token()
#
# Method to return individual tokens
# ----------------------------------------------------------------------
def token(self):
try:
while True:
tok = next(self.parser)
if tok.type not in self.ignore: return tok
except StopIteration:
self.parser = None
return None
if __name__ == '__main__':
import ply.lex as lex
lexer = lex.lex()
# Run a preprocessor
import sys
f = open(sys.argv[1])
input = f.read()
p = Preprocessor(lexer)
p.parse(input,sys.argv[1])
while True:
tok = p.token()
if not tok: break
print(p.source, tok)
| 33,282 | Python | 35.736203 | 141 | 0.420588 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ply/yacc.py | # -----------------------------------------------------------------------------
# ply: yacc.py
#
# Copyright (C) 2001-2017
# David M. Beazley (Dabeaz LLC)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of the David Beazley or Dabeaz LLC may be used to
# endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -----------------------------------------------------------------------------
#
# This implements an LR parser that is constructed from grammar rules defined
# as Python functions. The grammer is specified by supplying the BNF inside
# Python documentation strings. The inspiration for this technique was borrowed
# from John Aycock's Spark parsing system. PLY might be viewed as cross between
# Spark and the GNU bison utility.
#
# The current implementation is only somewhat object-oriented. The
# LR parser itself is defined in terms of an object (which allows multiple
# parsers to co-exist). However, most of the variables used during table
# construction are defined in terms of global variables. Users shouldn't
# notice unless they are trying to define multiple parsers at the same
# time using threads (in which case they should have their head examined).
#
# This implementation supports both SLR and LALR(1) parsing. LALR(1)
# support was originally implemented by Elias Ioup ([email protected]),
# using the algorithm found in Aho, Sethi, and Ullman "Compilers: Principles,
# Techniques, and Tools" (The Dragon Book). LALR(1) has since been replaced
# by the more efficient DeRemer and Pennello algorithm.
#
# :::::::: WARNING :::::::
#
# Construction of LR parsing tables is fairly complicated and expensive.
# To make this module run fast, a *LOT* of work has been put into
# optimization---often at the expensive of readability and what might
# consider to be good Python "coding style." Modify the code at your
# own risk!
# ----------------------------------------------------------------------------
import re
import types
import sys
import os.path
import inspect
import base64
import warnings
__version__ = '3.10'
__tabversion__ = '3.10'
#-----------------------------------------------------------------------------
# === User configurable parameters ===
#
# Change these to modify the default behavior of yacc (if you wish)
#-----------------------------------------------------------------------------
yaccdebug = True # Debugging mode. If set, yacc generates a
# a 'parser.out' file in the current directory
debug_file = 'parser.out' # Default name of the debugging file
tab_module = 'parsetab' # Default name of the table module
default_lr = 'LALR' # Default LR table generation method
error_count = 3 # Number of symbols that must be shifted to leave recovery mode
yaccdevel = False # Set to True if developing yacc. This turns off optimized
# implementations of certain functions.
resultlimit = 40 # Size limit of results when running in debug mode.
pickle_protocol = 0 # Protocol to use when writing pickle files
# String type-checking compatibility
if sys.version_info[0] < 3:
string_types = basestring
else:
string_types = str
MAXINT = sys.maxsize
# This object is a stand-in for a logging object created by the
# logging module. PLY will use this by default to create things
# such as the parser.out file. If a user wants more detailed
# information, they can create their own logging object and pass
# it into PLY.
class PlyLogger(object):
def __init__(self, f):
self.f = f
def debug(self, msg, *args, **kwargs):
self.f.write((msg % args) + '\n')
info = debug
def warning(self, msg, *args, **kwargs):
self.f.write('WARNING: ' + (msg % args) + '\n')
def error(self, msg, *args, **kwargs):
self.f.write('ERROR: ' + (msg % args) + '\n')
critical = debug
# Null logger is used when no output is generated. Does nothing.
class NullLogger(object):
def __getattribute__(self, name):
return self
def __call__(self, *args, **kwargs):
return self
# Exception raised for yacc-related errors
class YaccError(Exception):
pass
# Format the result message that the parser produces when running in debug mode.
def format_result(r):
repr_str = repr(r)
if '\n' in repr_str:
repr_str = repr(repr_str)
if len(repr_str) > resultlimit:
repr_str = repr_str[:resultlimit] + ' ...'
result = '<%s @ 0x%x> (%s)' % (type(r).__name__, id(r), repr_str)
return result
# Format stack entries when the parser is running in debug mode
def format_stack_entry(r):
repr_str = repr(r)
if '\n' in repr_str:
repr_str = repr(repr_str)
if len(repr_str) < 16:
return repr_str
else:
return '<%s @ 0x%x>' % (type(r).__name__, id(r))
# Panic mode error recovery support. This feature is being reworked--much of the
# code here is to offer a deprecation/backwards compatible transition
_errok = None
_token = None
_restart = None
_warnmsg = '''PLY: Don't use global functions errok(), token(), and restart() in p_error().
Instead, invoke the methods on the associated parser instance:
def p_error(p):
...
# Use parser.errok(), parser.token(), parser.restart()
...
parser = yacc.yacc()
'''
def errok():
warnings.warn(_warnmsg)
return _errok()
def restart():
warnings.warn(_warnmsg)
return _restart()
def token():
warnings.warn(_warnmsg)
return _token()
# Utility function to call the p_error() function with some deprecation hacks
def call_errorfunc(errorfunc, token, parser):
global _errok, _token, _restart
_errok = parser.errok
_token = parser.token
_restart = parser.restart
r = errorfunc(token)
try:
del _errok, _token, _restart
except NameError:
pass
return r
#-----------------------------------------------------------------------------
# === LR Parsing Engine ===
#
# The following classes are used for the LR parser itself. These are not
# used during table construction and are independent of the actual LR
# table generation algorithm
#-----------------------------------------------------------------------------
# This class is used to hold non-terminal grammar symbols during parsing.
# It normally has the following attributes set:
# .type = Grammar symbol type
# .value = Symbol value
# .lineno = Starting line number
# .endlineno = Ending line number (optional, set automatically)
# .lexpos = Starting lex position
# .endlexpos = Ending lex position (optional, set automatically)
class YaccSymbol:
def __str__(self):
return self.type
def __repr__(self):
return str(self)
# This class is a wrapper around the objects actually passed to each
# grammar rule. Index lookup and assignment actually assign the
# .value attribute of the underlying YaccSymbol object.
# The lineno() method returns the line number of a given
# item (or 0 if not defined). The linespan() method returns
# a tuple of (startline,endline) representing the range of lines
# for a symbol. The lexspan() method returns a tuple (lexpos,endlexpos)
# representing the range of positional information for a symbol.
class YaccProduction:
def __init__(self, s, stack=None):
self.slice = s
self.stack = stack
self.lexer = None
self.parser = None
def __getitem__(self, n):
if isinstance(n, slice):
return [s.value for s in self.slice[n]]
elif n >= 0:
return self.slice[n].value
else:
return self.stack[n].value
def __setitem__(self, n, v):
self.slice[n].value = v
def __getslice__(self, i, j):
return [s.value for s in self.slice[i:j]]
def __len__(self):
return len(self.slice)
def lineno(self, n):
return getattr(self.slice[n], 'lineno', 0)
def set_lineno(self, n, lineno):
self.slice[n].lineno = lineno
def linespan(self, n):
startline = getattr(self.slice[n], 'lineno', 0)
endline = getattr(self.slice[n], 'endlineno', startline)
return startline, endline
def lexpos(self, n):
return getattr(self.slice[n], 'lexpos', 0)
def lexspan(self, n):
startpos = getattr(self.slice[n], 'lexpos', 0)
endpos = getattr(self.slice[n], 'endlexpos', startpos)
return startpos, endpos
def error(self):
raise SyntaxError
# -----------------------------------------------------------------------------
# == LRParser ==
#
# The LR Parsing engine.
# -----------------------------------------------------------------------------
class LRParser:
def __init__(self, lrtab, errorf):
self.productions = lrtab.lr_productions
self.action = lrtab.lr_action
self.goto = lrtab.lr_goto
self.errorfunc = errorf
self.set_defaulted_states()
self.errorok = True
def errok(self):
self.errorok = True
def restart(self):
del self.statestack[:]
del self.symstack[:]
sym = YaccSymbol()
sym.type = '$end'
self.symstack.append(sym)
self.statestack.append(0)
# Defaulted state support.
# This method identifies parser states where there is only one possible reduction action.
# For such states, the parser can make a choose to make a rule reduction without consuming
# the next look-ahead token. This delayed invocation of the tokenizer can be useful in
# certain kinds of advanced parsing situations where the lexer and parser interact with
# each other or change states (i.e., manipulation of scope, lexer states, etc.).
#
# See: https://www.gnu.org/software/bison/manual/html_node/Default-Reductions.html#Default-Reductions
def set_defaulted_states(self):
self.defaulted_states = {}
for state, actions in self.action.items():
rules = list(actions.values())
if len(rules) == 1 and rules[0] < 0:
self.defaulted_states[state] = rules[0]
def disable_defaulted_states(self):
self.defaulted_states = {}
def parse(self, input=None, lexer=None, debug=False, tracking=False, tokenfunc=None):
if debug or yaccdevel:
if isinstance(debug, int):
debug = PlyLogger(sys.stderr)
return self.parsedebug(input, lexer, debug, tracking, tokenfunc)
elif tracking:
return self.parseopt(input, lexer, debug, tracking, tokenfunc)
else:
return self.parseopt_notrack(input, lexer, debug, tracking, tokenfunc)
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# parsedebug().
#
# This is the debugging enabled version of parse(). All changes made to the
# parsing engine should be made here. Optimized versions of this function
# are automatically created by the ply/ygen.py script. This script cuts out
# sections enclosed in markers such as this:
#
# #--! DEBUG
# statements
# #--! DEBUG
#
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
def parsedebug(self, input=None, lexer=None, debug=False, tracking=False, tokenfunc=None):
#--! parsedebug-start
lookahead = None # Current lookahead symbol
lookaheadstack = [] # Stack of lookahead symbols
actions = self.action # Local reference to action table (to avoid lookup on self.)
goto = self.goto # Local reference to goto table (to avoid lookup on self.)
prod = self.productions # Local reference to production list (to avoid lookup on self.)
defaulted_states = self.defaulted_states # Local reference to defaulted states
pslice = YaccProduction(None) # Production object passed to grammar rules
errorcount = 0 # Used during error recovery
#--! DEBUG
debug.info('PLY: PARSE DEBUG START')
#--! DEBUG
# If no lexer was given, we will try to use the lex module
if not lexer:
from . import lex
lexer = lex.lexer
# Set up the lexer and parser objects on pslice
pslice.lexer = lexer
pslice.parser = self
# If input was supplied, pass to lexer
if input is not None:
lexer.input(input)
if tokenfunc is None:
# Tokenize function
get_token = lexer.token
else:
get_token = tokenfunc
# Set the parser() token method (sometimes used in error recovery)
self.token = get_token
# Set up the state and symbol stacks
statestack = [] # Stack of parsing states
self.statestack = statestack
symstack = [] # Stack of grammar symbols
self.symstack = symstack
pslice.stack = symstack # Put in the production
errtoken = None # Err token
# The start state is assumed to be (0,$end)
statestack.append(0)
sym = YaccSymbol()
sym.type = '$end'
symstack.append(sym)
state = 0
while True:
# Get the next symbol on the input. If a lookahead symbol
# is already set, we just use that. Otherwise, we'll pull
# the next token off of the lookaheadstack or from the lexer
#--! DEBUG
debug.debug('')
debug.debug('State : %s', state)
#--! DEBUG
if state not in defaulted_states:
if not lookahead:
if not lookaheadstack:
lookahead = get_token() # Get the next token
else:
lookahead = lookaheadstack.pop()
if not lookahead:
lookahead = YaccSymbol()
lookahead.type = '$end'
# Check the action table
ltype = lookahead.type
t = actions[state].get(ltype)
else:
t = defaulted_states[state]
#--! DEBUG
debug.debug('Defaulted state %s: Reduce using %d', state, -t)
#--! DEBUG
#--! DEBUG
debug.debug('Stack : %s',
('%s . %s' % (' '.join([xx.type for xx in symstack][1:]), str(lookahead))).lstrip())
#--! DEBUG
if t is not None:
if t > 0:
# shift a symbol on the stack
statestack.append(t)
state = t
#--! DEBUG
debug.debug('Action : Shift and goto state %s', t)
#--! DEBUG
symstack.append(lookahead)
lookahead = None
# Decrease error count on successful shift
if errorcount:
errorcount -= 1
continue
if t < 0:
# reduce a symbol on the stack, emit a production
p = prod[-t]
pname = p.name
plen = p.len
# Get production function
sym = YaccSymbol()
sym.type = pname # Production name
sym.value = None
#--! DEBUG
if plen:
debug.info('Action : Reduce rule [%s] with %s and goto state %d', p.str,
'['+','.join([format_stack_entry(_v.value) for _v in symstack[-plen:]])+']',
goto[statestack[-1-plen]][pname])
else:
debug.info('Action : Reduce rule [%s] with %s and goto state %d', p.str, [],
goto[statestack[-1]][pname])
#--! DEBUG
if plen:
targ = symstack[-plen-1:]
targ[0] = sym
#--! TRACKING
if tracking:
t1 = targ[1]
sym.lineno = t1.lineno
sym.lexpos = t1.lexpos
t1 = targ[-1]
sym.endlineno = getattr(t1, 'endlineno', t1.lineno)
sym.endlexpos = getattr(t1, 'endlexpos', t1.lexpos)
#--! TRACKING
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# The code enclosed in this section is duplicated
# below as a performance optimization. Make sure
# changes get made in both locations.
pslice.slice = targ
try:
# Call the grammar rule with our special slice object
del symstack[-plen:]
self.state = state
p.callable(pslice)
del statestack[-plen:]
#--! DEBUG
debug.info('Result : %s', format_result(pslice[0]))
#--! DEBUG
symstack.append(sym)
state = goto[statestack[-1]][pname]
statestack.append(state)
except SyntaxError:
# If an error was set. Enter error recovery state
lookaheadstack.append(lookahead) # Save the current lookahead token
symstack.extend(targ[1:-1]) # Put the production slice back on the stack
statestack.pop() # Pop back one state (before the reduce)
state = statestack[-1]
sym.type = 'error'
sym.value = 'error'
lookahead = sym
errorcount = error_count
self.errorok = False
continue
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
else:
#--! TRACKING
if tracking:
sym.lineno = lexer.lineno
sym.lexpos = lexer.lexpos
#--! TRACKING
targ = [sym]
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# The code enclosed in this section is duplicated
# above as a performance optimization. Make sure
# changes get made in both locations.
pslice.slice = targ
try:
# Call the grammar rule with our special slice object
self.state = state
p.callable(pslice)
#--! DEBUG
debug.info('Result : %s', format_result(pslice[0]))
#--! DEBUG
symstack.append(sym)
state = goto[statestack[-1]][pname]
statestack.append(state)
except SyntaxError:
# If an error was set. Enter error recovery state
lookaheadstack.append(lookahead) # Save the current lookahead token
statestack.pop() # Pop back one state (before the reduce)
state = statestack[-1]
sym.type = 'error'
sym.value = 'error'
lookahead = sym
errorcount = error_count
self.errorok = False
continue
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
if t == 0:
n = symstack[-1]
result = getattr(n, 'value', None)
#--! DEBUG
debug.info('Done : Returning %s', format_result(result))
debug.info('PLY: PARSE DEBUG END')
#--! DEBUG
return result
if t is None:
#--! DEBUG
debug.error('Error : %s',
('%s . %s' % (' '.join([xx.type for xx in symstack][1:]), str(lookahead))).lstrip())
#--! DEBUG
# We have some kind of parsing error here. To handle
# this, we are going to push the current token onto
# the tokenstack and replace it with an 'error' token.
# If there are any synchronization rules, they may
# catch it.
#
# In addition to pushing the error token, we call call
# the user defined p_error() function if this is the
# first syntax error. This function is only called if
# errorcount == 0.
if errorcount == 0 or self.errorok:
errorcount = error_count
self.errorok = False
errtoken = lookahead
if errtoken.type == '$end':
errtoken = None # End of file!
if self.errorfunc:
if errtoken and not hasattr(errtoken, 'lexer'):
errtoken.lexer = lexer
self.state = state
tok = call_errorfunc(self.errorfunc, errtoken, self)
if self.errorok:
# User must have done some kind of panic
# mode recovery on their own. The
# returned token is the next lookahead
lookahead = tok
errtoken = None
continue
else:
if errtoken:
if hasattr(errtoken, 'lineno'):
lineno = lookahead.lineno
else:
lineno = 0
if lineno:
sys.stderr.write('yacc: Syntax error at line %d, token=%s\n' % (lineno, errtoken.type))
else:
sys.stderr.write('yacc: Syntax error, token=%s' % errtoken.type)
else:
sys.stderr.write('yacc: Parse error in input. EOF\n')
return
else:
errorcount = error_count
# case 1: the statestack only has 1 entry on it. If we're in this state, the
# entire parse has been rolled back and we're completely hosed. The token is
# discarded and we just keep going.
if len(statestack) <= 1 and lookahead.type != '$end':
lookahead = None
errtoken = None
state = 0
# Nuke the pushback stack
del lookaheadstack[:]
continue
# case 2: the statestack has a couple of entries on it, but we're
# at the end of the file. nuke the top entry and generate an error token
# Start nuking entries on the stack
if lookahead.type == '$end':
# Whoa. We're really hosed here. Bail out
return
if lookahead.type != 'error':
sym = symstack[-1]
if sym.type == 'error':
# Hmmm. Error is on top of stack, we'll just nuke input
# symbol and continue
#--! TRACKING
if tracking:
sym.endlineno = getattr(lookahead, 'lineno', sym.lineno)
sym.endlexpos = getattr(lookahead, 'lexpos', sym.lexpos)
#--! TRACKING
lookahead = None
continue
# Create the error symbol for the first time and make it the new lookahead symbol
t = YaccSymbol()
t.type = 'error'
if hasattr(lookahead, 'lineno'):
t.lineno = t.endlineno = lookahead.lineno
if hasattr(lookahead, 'lexpos'):
t.lexpos = t.endlexpos = lookahead.lexpos
t.value = lookahead
lookaheadstack.append(lookahead)
lookahead = t
else:
sym = symstack.pop()
#--! TRACKING
if tracking:
lookahead.lineno = sym.lineno
lookahead.lexpos = sym.lexpos
#--! TRACKING
statestack.pop()
state = statestack[-1]
continue
# Call an error function here
raise RuntimeError('yacc: internal parser error!!!\n')
#--! parsedebug-end
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# parseopt().
#
# Optimized version of parse() method. DO NOT EDIT THIS CODE DIRECTLY!
# This code is automatically generated by the ply/ygen.py script. Make
# changes to the parsedebug() method instead.
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
def parseopt(self, input=None, lexer=None, debug=False, tracking=False, tokenfunc=None):
#--! parseopt-start
lookahead = None # Current lookahead symbol
lookaheadstack = [] # Stack of lookahead symbols
actions = self.action # Local reference to action table (to avoid lookup on self.)
goto = self.goto # Local reference to goto table (to avoid lookup on self.)
prod = self.productions # Local reference to production list (to avoid lookup on self.)
defaulted_states = self.defaulted_states # Local reference to defaulted states
pslice = YaccProduction(None) # Production object passed to grammar rules
errorcount = 0 # Used during error recovery
# If no lexer was given, we will try to use the lex module
if not lexer:
from . import lex
lexer = lex.lexer
# Set up the lexer and parser objects on pslice
pslice.lexer = lexer
pslice.parser = self
# If input was supplied, pass to lexer
if input is not None:
lexer.input(input)
if tokenfunc is None:
# Tokenize function
get_token = lexer.token
else:
get_token = tokenfunc
# Set the parser() token method (sometimes used in error recovery)
self.token = get_token
# Set up the state and symbol stacks
statestack = [] # Stack of parsing states
self.statestack = statestack
symstack = [] # Stack of grammar symbols
self.symstack = symstack
pslice.stack = symstack # Put in the production
errtoken = None # Err token
# The start state is assumed to be (0,$end)
statestack.append(0)
sym = YaccSymbol()
sym.type = '$end'
symstack.append(sym)
state = 0
while True:
# Get the next symbol on the input. If a lookahead symbol
# is already set, we just use that. Otherwise, we'll pull
# the next token off of the lookaheadstack or from the lexer
if state not in defaulted_states:
if not lookahead:
if not lookaheadstack:
lookahead = get_token() # Get the next token
else:
lookahead = lookaheadstack.pop()
if not lookahead:
lookahead = YaccSymbol()
lookahead.type = '$end'
# Check the action table
ltype = lookahead.type
t = actions[state].get(ltype)
else:
t = defaulted_states[state]
if t is not None:
if t > 0:
# shift a symbol on the stack
statestack.append(t)
state = t
symstack.append(lookahead)
lookahead = None
# Decrease error count on successful shift
if errorcount:
errorcount -= 1
continue
if t < 0:
# reduce a symbol on the stack, emit a production
p = prod[-t]
pname = p.name
plen = p.len
# Get production function
sym = YaccSymbol()
sym.type = pname # Production name
sym.value = None
if plen:
targ = symstack[-plen-1:]
targ[0] = sym
#--! TRACKING
if tracking:
t1 = targ[1]
sym.lineno = t1.lineno
sym.lexpos = t1.lexpos
t1 = targ[-1]
sym.endlineno = getattr(t1, 'endlineno', t1.lineno)
sym.endlexpos = getattr(t1, 'endlexpos', t1.lexpos)
#--! TRACKING
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# The code enclosed in this section is duplicated
# below as a performance optimization. Make sure
# changes get made in both locations.
pslice.slice = targ
try:
# Call the grammar rule with our special slice object
del symstack[-plen:]
self.state = state
p.callable(pslice)
del statestack[-plen:]
symstack.append(sym)
state = goto[statestack[-1]][pname]
statestack.append(state)
except SyntaxError:
# If an error was set. Enter error recovery state
lookaheadstack.append(lookahead) # Save the current lookahead token
symstack.extend(targ[1:-1]) # Put the production slice back on the stack
statestack.pop() # Pop back one state (before the reduce)
state = statestack[-1]
sym.type = 'error'
sym.value = 'error'
lookahead = sym
errorcount = error_count
self.errorok = False
continue
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
else:
#--! TRACKING
if tracking:
sym.lineno = lexer.lineno
sym.lexpos = lexer.lexpos
#--! TRACKING
targ = [sym]
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# The code enclosed in this section is duplicated
# above as a performance optimization. Make sure
# changes get made in both locations.
pslice.slice = targ
try:
# Call the grammar rule with our special slice object
self.state = state
p.callable(pslice)
symstack.append(sym)
state = goto[statestack[-1]][pname]
statestack.append(state)
except SyntaxError:
# If an error was set. Enter error recovery state
lookaheadstack.append(lookahead) # Save the current lookahead token
statestack.pop() # Pop back one state (before the reduce)
state = statestack[-1]
sym.type = 'error'
sym.value = 'error'
lookahead = sym
errorcount = error_count
self.errorok = False
continue
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
if t == 0:
n = symstack[-1]
result = getattr(n, 'value', None)
return result
if t is None:
# We have some kind of parsing error here. To handle
# this, we are going to push the current token onto
# the tokenstack and replace it with an 'error' token.
# If there are any synchronization rules, they may
# catch it.
#
# In addition to pushing the error token, we call call
# the user defined p_error() function if this is the
# first syntax error. This function is only called if
# errorcount == 0.
if errorcount == 0 or self.errorok:
errorcount = error_count
self.errorok = False
errtoken = lookahead
if errtoken.type == '$end':
errtoken = None # End of file!
if self.errorfunc:
if errtoken and not hasattr(errtoken, 'lexer'):
errtoken.lexer = lexer
self.state = state
tok = call_errorfunc(self.errorfunc, errtoken, self)
if self.errorok:
# User must have done some kind of panic
# mode recovery on their own. The
# returned token is the next lookahead
lookahead = tok
errtoken = None
continue
else:
if errtoken:
if hasattr(errtoken, 'lineno'):
lineno = lookahead.lineno
else:
lineno = 0
if lineno:
sys.stderr.write('yacc: Syntax error at line %d, token=%s\n' % (lineno, errtoken.type))
else:
sys.stderr.write('yacc: Syntax error, token=%s' % errtoken.type)
else:
sys.stderr.write('yacc: Parse error in input. EOF\n')
return
else:
errorcount = error_count
# case 1: the statestack only has 1 entry on it. If we're in this state, the
# entire parse has been rolled back and we're completely hosed. The token is
# discarded and we just keep going.
if len(statestack) <= 1 and lookahead.type != '$end':
lookahead = None
errtoken = None
state = 0
# Nuke the pushback stack
del lookaheadstack[:]
continue
# case 2: the statestack has a couple of entries on it, but we're
# at the end of the file. nuke the top entry and generate an error token
# Start nuking entries on the stack
if lookahead.type == '$end':
# Whoa. We're really hosed here. Bail out
return
if lookahead.type != 'error':
sym = symstack[-1]
if sym.type == 'error':
# Hmmm. Error is on top of stack, we'll just nuke input
# symbol and continue
#--! TRACKING
if tracking:
sym.endlineno = getattr(lookahead, 'lineno', sym.lineno)
sym.endlexpos = getattr(lookahead, 'lexpos', sym.lexpos)
#--! TRACKING
lookahead = None
continue
# Create the error symbol for the first time and make it the new lookahead symbol
t = YaccSymbol()
t.type = 'error'
if hasattr(lookahead, 'lineno'):
t.lineno = t.endlineno = lookahead.lineno
if hasattr(lookahead, 'lexpos'):
t.lexpos = t.endlexpos = lookahead.lexpos
t.value = lookahead
lookaheadstack.append(lookahead)
lookahead = t
else:
sym = symstack.pop()
#--! TRACKING
if tracking:
lookahead.lineno = sym.lineno
lookahead.lexpos = sym.lexpos
#--! TRACKING
statestack.pop()
state = statestack[-1]
continue
# Call an error function here
raise RuntimeError('yacc: internal parser error!!!\n')
#--! parseopt-end
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# parseopt_notrack().
#
# Optimized version of parseopt() with line number tracking removed.
# DO NOT EDIT THIS CODE DIRECTLY. This code is automatically generated
# by the ply/ygen.py script. Make changes to the parsedebug() method instead.
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
def parseopt_notrack(self, input=None, lexer=None, debug=False, tracking=False, tokenfunc=None):
#--! parseopt-notrack-start
lookahead = None # Current lookahead symbol
lookaheadstack = [] # Stack of lookahead symbols
actions = self.action # Local reference to action table (to avoid lookup on self.)
goto = self.goto # Local reference to goto table (to avoid lookup on self.)
prod = self.productions # Local reference to production list (to avoid lookup on self.)
defaulted_states = self.defaulted_states # Local reference to defaulted states
pslice = YaccProduction(None) # Production object passed to grammar rules
errorcount = 0 # Used during error recovery
# If no lexer was given, we will try to use the lex module
if not lexer:
from . import lex
lexer = lex.lexer
# Set up the lexer and parser objects on pslice
pslice.lexer = lexer
pslice.parser = self
# If input was supplied, pass to lexer
if input is not None:
lexer.input(input)
if tokenfunc is None:
# Tokenize function
get_token = lexer.token
else:
get_token = tokenfunc
# Set the parser() token method (sometimes used in error recovery)
self.token = get_token
# Set up the state and symbol stacks
statestack = [] # Stack of parsing states
self.statestack = statestack
symstack = [] # Stack of grammar symbols
self.symstack = symstack
pslice.stack = symstack # Put in the production
errtoken = None # Err token
# The start state is assumed to be (0,$end)
statestack.append(0)
sym = YaccSymbol()
sym.type = '$end'
symstack.append(sym)
state = 0
while True:
# Get the next symbol on the input. If a lookahead symbol
# is already set, we just use that. Otherwise, we'll pull
# the next token off of the lookaheadstack or from the lexer
if state not in defaulted_states:
if not lookahead:
if not lookaheadstack:
lookahead = get_token() # Get the next token
else:
lookahead = lookaheadstack.pop()
if not lookahead:
lookahead = YaccSymbol()
lookahead.type = '$end'
# Check the action table
ltype = lookahead.type
t = actions[state].get(ltype)
else:
t = defaulted_states[state]
if t is not None:
if t > 0:
# shift a symbol on the stack
statestack.append(t)
state = t
symstack.append(lookahead)
lookahead = None
# Decrease error count on successful shift
if errorcount:
errorcount -= 1
continue
if t < 0:
# reduce a symbol on the stack, emit a production
p = prod[-t]
pname = p.name
plen = p.len
# Get production function
sym = YaccSymbol()
sym.type = pname # Production name
sym.value = None
if plen:
targ = symstack[-plen-1:]
targ[0] = sym
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# The code enclosed in this section is duplicated
# below as a performance optimization. Make sure
# changes get made in both locations.
pslice.slice = targ
try:
# Call the grammar rule with our special slice object
del symstack[-plen:]
self.state = state
p.callable(pslice)
del statestack[-plen:]
symstack.append(sym)
state = goto[statestack[-1]][pname]
statestack.append(state)
except SyntaxError:
# If an error was set. Enter error recovery state
lookaheadstack.append(lookahead) # Save the current lookahead token
symstack.extend(targ[1:-1]) # Put the production slice back on the stack
statestack.pop() # Pop back one state (before the reduce)
state = statestack[-1]
sym.type = 'error'
sym.value = 'error'
lookahead = sym
errorcount = error_count
self.errorok = False
continue
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
else:
targ = [sym]
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
# The code enclosed in this section is duplicated
# above as a performance optimization. Make sure
# changes get made in both locations.
pslice.slice = targ
try:
# Call the grammar rule with our special slice object
self.state = state
p.callable(pslice)
symstack.append(sym)
state = goto[statestack[-1]][pname]
statestack.append(state)
except SyntaxError:
# If an error was set. Enter error recovery state
lookaheadstack.append(lookahead) # Save the current lookahead token
statestack.pop() # Pop back one state (before the reduce)
state = statestack[-1]
sym.type = 'error'
sym.value = 'error'
lookahead = sym
errorcount = error_count
self.errorok = False
continue
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
if t == 0:
n = symstack[-1]
result = getattr(n, 'value', None)
return result
if t is None:
# We have some kind of parsing error here. To handle
# this, we are going to push the current token onto
# the tokenstack and replace it with an 'error' token.
# If there are any synchronization rules, they may
# catch it.
#
# In addition to pushing the error token, we call call
# the user defined p_error() function if this is the
# first syntax error. This function is only called if
# errorcount == 0.
if errorcount == 0 or self.errorok:
errorcount = error_count
self.errorok = False
errtoken = lookahead
if errtoken.type == '$end':
errtoken = None # End of file!
if self.errorfunc:
if errtoken and not hasattr(errtoken, 'lexer'):
errtoken.lexer = lexer
self.state = state
tok = call_errorfunc(self.errorfunc, errtoken, self)
if self.errorok:
# User must have done some kind of panic
# mode recovery on their own. The
# returned token is the next lookahead
lookahead = tok
errtoken = None
continue
else:
if errtoken:
if hasattr(errtoken, 'lineno'):
lineno = lookahead.lineno
else:
lineno = 0
if lineno:
sys.stderr.write('yacc: Syntax error at line %d, token=%s\n' % (lineno, errtoken.type))
else:
sys.stderr.write('yacc: Syntax error, token=%s' % errtoken.type)
else:
sys.stderr.write('yacc: Parse error in input. EOF\n')
return
else:
errorcount = error_count
# case 1: the statestack only has 1 entry on it. If we're in this state, the
# entire parse has been rolled back and we're completely hosed. The token is
# discarded and we just keep going.
if len(statestack) <= 1 and lookahead.type != '$end':
lookahead = None
errtoken = None
state = 0
# Nuke the pushback stack
del lookaheadstack[:]
continue
# case 2: the statestack has a couple of entries on it, but we're
# at the end of the file. nuke the top entry and generate an error token
# Start nuking entries on the stack
if lookahead.type == '$end':
# Whoa. We're really hosed here. Bail out
return
if lookahead.type != 'error':
sym = symstack[-1]
if sym.type == 'error':
# Hmmm. Error is on top of stack, we'll just nuke input
# symbol and continue
lookahead = None
continue
# Create the error symbol for the first time and make it the new lookahead symbol
t = YaccSymbol()
t.type = 'error'
if hasattr(lookahead, 'lineno'):
t.lineno = t.endlineno = lookahead.lineno
if hasattr(lookahead, 'lexpos'):
t.lexpos = t.endlexpos = lookahead.lexpos
t.value = lookahead
lookaheadstack.append(lookahead)
lookahead = t
else:
sym = symstack.pop()
statestack.pop()
state = statestack[-1]
continue
# Call an error function here
raise RuntimeError('yacc: internal parser error!!!\n')
#--! parseopt-notrack-end
# -----------------------------------------------------------------------------
# === Grammar Representation ===
#
# The following functions, classes, and variables are used to represent and
# manipulate the rules that make up a grammar.
# -----------------------------------------------------------------------------
# regex matching identifiers
_is_identifier = re.compile(r'^[a-zA-Z0-9_-]+$')
# -----------------------------------------------------------------------------
# class Production:
#
# This class stores the raw information about a single production or grammar rule.
# A grammar rule refers to a specification such as this:
#
# expr : expr PLUS term
#
# Here are the basic attributes defined on all productions
#
# name - Name of the production. For example 'expr'
# prod - A list of symbols on the right side ['expr','PLUS','term']
# prec - Production precedence level
# number - Production number.
# func - Function that executes on reduce
# file - File where production function is defined
# lineno - Line number where production function is defined
#
# The following attributes are defined or optional.
#
# len - Length of the production (number of symbols on right hand side)
# usyms - Set of unique symbols found in the production
# -----------------------------------------------------------------------------
class Production(object):
reduced = 0
def __init__(self, number, name, prod, precedence=('right', 0), func=None, file='', line=0):
self.name = name
self.prod = tuple(prod)
self.number = number
self.func = func
self.callable = None
self.file = file
self.line = line
self.prec = precedence
# Internal settings used during table construction
self.len = len(self.prod) # Length of the production
# Create a list of unique production symbols used in the production
self.usyms = []
for s in self.prod:
if s not in self.usyms:
self.usyms.append(s)
# List of all LR items for the production
self.lr_items = []
self.lr_next = None
# Create a string representation
if self.prod:
self.str = '%s -> %s' % (self.name, ' '.join(self.prod))
else:
self.str = '%s -> <empty>' % self.name
def __str__(self):
return self.str
def __repr__(self):
return 'Production(' + str(self) + ')'
def __len__(self):
return len(self.prod)
def __nonzero__(self):
return 1
def __getitem__(self, index):
return self.prod[index]
# Return the nth lr_item from the production (or None if at the end)
def lr_item(self, n):
if n > len(self.prod):
return None
p = LRItem(self, n)
# Precompute the list of productions immediately following.
try:
p.lr_after = Prodnames[p.prod[n+1]]
except (IndexError, KeyError):
p.lr_after = []
try:
p.lr_before = p.prod[n-1]
except IndexError:
p.lr_before = None
return p
# Bind the production function name to a callable
def bind(self, pdict):
if self.func:
self.callable = pdict[self.func]
# This class serves as a minimal standin for Production objects when
# reading table data from files. It only contains information
# actually used by the LR parsing engine, plus some additional
# debugging information.
class MiniProduction(object):
def __init__(self, str, name, len, func, file, line):
self.name = name
self.len = len
self.func = func
self.callable = None
self.file = file
self.line = line
self.str = str
def __str__(self):
return self.str
def __repr__(self):
return 'MiniProduction(%s)' % self.str
# Bind the production function name to a callable
def bind(self, pdict):
if self.func:
self.callable = pdict[self.func]
# -----------------------------------------------------------------------------
# class LRItem
#
# This class represents a specific stage of parsing a production rule. For
# example:
#
# expr : expr . PLUS term
#
# In the above, the "." represents the current location of the parse. Here
# basic attributes:
#
# name - Name of the production. For example 'expr'
# prod - A list of symbols on the right side ['expr','.', 'PLUS','term']
# number - Production number.
#
# lr_next Next LR item. Example, if we are ' expr -> expr . PLUS term'
# then lr_next refers to 'expr -> expr PLUS . term'
# lr_index - LR item index (location of the ".") in the prod list.
# lookaheads - LALR lookahead symbols for this item
# len - Length of the production (number of symbols on right hand side)
# lr_after - List of all productions that immediately follow
# lr_before - Grammar symbol immediately before
# -----------------------------------------------------------------------------
class LRItem(object):
def __init__(self, p, n):
self.name = p.name
self.prod = list(p.prod)
self.number = p.number
self.lr_index = n
self.lookaheads = {}
self.prod.insert(n, '.')
self.prod = tuple(self.prod)
self.len = len(self.prod)
self.usyms = p.usyms
def __str__(self):
if self.prod:
s = '%s -> %s' % (self.name, ' '.join(self.prod))
else:
s = '%s -> <empty>' % self.name
return s
def __repr__(self):
return 'LRItem(' + str(self) + ')'
# -----------------------------------------------------------------------------
# rightmost_terminal()
#
# Return the rightmost terminal from a list of symbols. Used in add_production()
# -----------------------------------------------------------------------------
def rightmost_terminal(symbols, terminals):
i = len(symbols) - 1
while i >= 0:
if symbols[i] in terminals:
return symbols[i]
i -= 1
return None
# -----------------------------------------------------------------------------
# === GRAMMAR CLASS ===
#
# The following class represents the contents of the specified grammar along
# with various computed properties such as first sets, follow sets, LR items, etc.
# This data is used for critical parts of the table generation process later.
# -----------------------------------------------------------------------------
class GrammarError(YaccError):
pass
class Grammar(object):
def __init__(self, terminals):
self.Productions = [None] # A list of all of the productions. The first
# entry is always reserved for the purpose of
# building an augmented grammar
self.Prodnames = {} # A dictionary mapping the names of nonterminals to a list of all
# productions of that nonterminal.
self.Prodmap = {} # A dictionary that is only used to detect duplicate
# productions.
self.Terminals = {} # A dictionary mapping the names of terminal symbols to a
# list of the rules where they are used.
for term in terminals:
self.Terminals[term] = []
self.Terminals['error'] = []
self.Nonterminals = {} # A dictionary mapping names of nonterminals to a list
# of rule numbers where they are used.
self.First = {} # A dictionary of precomputed FIRST(x) symbols
self.Follow = {} # A dictionary of precomputed FOLLOW(x) symbols
self.Precedence = {} # Precedence rules for each terminal. Contains tuples of the
# form ('right',level) or ('nonassoc', level) or ('left',level)
self.UsedPrecedence = set() # Precedence rules that were actually used by the grammer.
# This is only used to provide error checking and to generate
# a warning about unused precedence rules.
self.Start = None # Starting symbol for the grammar
def __len__(self):
return len(self.Productions)
def __getitem__(self, index):
return self.Productions[index]
# -----------------------------------------------------------------------------
# set_precedence()
#
# Sets the precedence for a given terminal. assoc is the associativity such as
# 'left','right', or 'nonassoc'. level is a numeric level.
#
# -----------------------------------------------------------------------------
def set_precedence(self, term, assoc, level):
assert self.Productions == [None], 'Must call set_precedence() before add_production()'
if term in self.Precedence:
raise GrammarError('Precedence already specified for terminal %r' % term)
if assoc not in ['left', 'right', 'nonassoc']:
raise GrammarError("Associativity must be one of 'left','right', or 'nonassoc'")
self.Precedence[term] = (assoc, level)
# -----------------------------------------------------------------------------
# add_production()
#
# Given an action function, this function assembles a production rule and
# computes its precedence level.
#
# The production rule is supplied as a list of symbols. For example,
# a rule such as 'expr : expr PLUS term' has a production name of 'expr' and
# symbols ['expr','PLUS','term'].
#
# Precedence is determined by the precedence of the right-most non-terminal
# or the precedence of a terminal specified by %prec.
#
# A variety of error checks are performed to make sure production symbols
# are valid and that %prec is used correctly.
# -----------------------------------------------------------------------------
def add_production(self, prodname, syms, func=None, file='', line=0):
if prodname in self.Terminals:
raise GrammarError('%s:%d: Illegal rule name %r. Already defined as a token' % (file, line, prodname))
if prodname == 'error':
raise GrammarError('%s:%d: Illegal rule name %r. error is a reserved word' % (file, line, prodname))
if not _is_identifier.match(prodname):
raise GrammarError('%s:%d: Illegal rule name %r' % (file, line, prodname))
# Look for literal tokens
for n, s in enumerate(syms):
if s[0] in "'\"":
try:
c = eval(s)
if (len(c) > 1):
raise GrammarError('%s:%d: Literal token %s in rule %r may only be a single character' %
(file, line, s, prodname))
if c not in self.Terminals:
self.Terminals[c] = []
syms[n] = c
continue
except SyntaxError:
pass
if not _is_identifier.match(s) and s != '%prec':
raise GrammarError('%s:%d: Illegal name %r in rule %r' % (file, line, s, prodname))
# Determine the precedence level
if '%prec' in syms:
if syms[-1] == '%prec':
raise GrammarError('%s:%d: Syntax error. Nothing follows %%prec' % (file, line))
if syms[-2] != '%prec':
raise GrammarError('%s:%d: Syntax error. %%prec can only appear at the end of a grammar rule' %
(file, line))
precname = syms[-1]
prodprec = self.Precedence.get(precname)
if not prodprec:
raise GrammarError('%s:%d: Nothing known about the precedence of %r' % (file, line, precname))
else:
self.UsedPrecedence.add(precname)
del syms[-2:] # Drop %prec from the rule
else:
# If no %prec, precedence is determined by the rightmost terminal symbol
precname = rightmost_terminal(syms, self.Terminals)
prodprec = self.Precedence.get(precname, ('right', 0))
# See if the rule is already in the rulemap
map = '%s -> %s' % (prodname, syms)
if map in self.Prodmap:
m = self.Prodmap[map]
raise GrammarError('%s:%d: Duplicate rule %s. ' % (file, line, m) +
'Previous definition at %s:%d' % (m.file, m.line))
# From this point on, everything is valid. Create a new Production instance
pnumber = len(self.Productions)
if prodname not in self.Nonterminals:
self.Nonterminals[prodname] = []
# Add the production number to Terminals and Nonterminals
for t in syms:
if t in self.Terminals:
self.Terminals[t].append(pnumber)
else:
if t not in self.Nonterminals:
self.Nonterminals[t] = []
self.Nonterminals[t].append(pnumber)
# Create a production and add it to the list of productions
p = Production(pnumber, prodname, syms, prodprec, func, file, line)
self.Productions.append(p)
self.Prodmap[map] = p
# Add to the global productions list
try:
self.Prodnames[prodname].append(p)
except KeyError:
self.Prodnames[prodname] = [p]
# -----------------------------------------------------------------------------
# set_start()
#
# Sets the starting symbol and creates the augmented grammar. Production
# rule 0 is S' -> start where start is the start symbol.
# -----------------------------------------------------------------------------
def set_start(self, start=None):
if not start:
start = self.Productions[1].name
if start not in self.Nonterminals:
raise GrammarError('start symbol %s undefined' % start)
self.Productions[0] = Production(0, "S'", [start])
self.Nonterminals[start].append(0)
self.Start = start
# -----------------------------------------------------------------------------
# find_unreachable()
#
# Find all of the nonterminal symbols that can't be reached from the starting
# symbol. Returns a list of nonterminals that can't be reached.
# -----------------------------------------------------------------------------
def find_unreachable(self):
# Mark all symbols that are reachable from a symbol s
def mark_reachable_from(s):
if s in reachable:
return
reachable.add(s)
for p in self.Prodnames.get(s, []):
for r in p.prod:
mark_reachable_from(r)
reachable = set()
mark_reachable_from(self.Productions[0].prod[0])
return [s for s in self.Nonterminals if s not in reachable]
# -----------------------------------------------------------------------------
# infinite_cycles()
#
# This function looks at the various parsing rules and tries to detect
# infinite recursion cycles (grammar rules where there is no possible way
# to derive a string of only terminals).
# -----------------------------------------------------------------------------
def infinite_cycles(self):
terminates = {}
# Terminals:
for t in self.Terminals:
terminates[t] = True
terminates['$end'] = True
# Nonterminals:
# Initialize to false:
for n in self.Nonterminals:
terminates[n] = False
# Then propagate termination until no change:
while True:
some_change = False
for (n, pl) in self.Prodnames.items():
# Nonterminal n terminates iff any of its productions terminates.
for p in pl:
# Production p terminates iff all of its rhs symbols terminate.
for s in p.prod:
if not terminates[s]:
# The symbol s does not terminate,
# so production p does not terminate.
p_terminates = False
break
else:
# didn't break from the loop,
# so every symbol s terminates
# so production p terminates.
p_terminates = True
if p_terminates:
# symbol n terminates!
if not terminates[n]:
terminates[n] = True
some_change = True
# Don't need to consider any more productions for this n.
break
if not some_change:
break
infinite = []
for (s, term) in terminates.items():
if not term:
if s not in self.Prodnames and s not in self.Terminals and s != 'error':
# s is used-but-not-defined, and we've already warned of that,
# so it would be overkill to say that it's also non-terminating.
pass
else:
infinite.append(s)
return infinite
# -----------------------------------------------------------------------------
# undefined_symbols()
#
# Find all symbols that were used the grammar, but not defined as tokens or
# grammar rules. Returns a list of tuples (sym, prod) where sym in the symbol
# and prod is the production where the symbol was used.
# -----------------------------------------------------------------------------
def undefined_symbols(self):
result = []
for p in self.Productions:
if not p:
continue
for s in p.prod:
if s not in self.Prodnames and s not in self.Terminals and s != 'error':
result.append((s, p))
return result
# -----------------------------------------------------------------------------
# unused_terminals()
#
# Find all terminals that were defined, but not used by the grammar. Returns
# a list of all symbols.
# -----------------------------------------------------------------------------
def unused_terminals(self):
unused_tok = []
for s, v in self.Terminals.items():
if s != 'error' and not v:
unused_tok.append(s)
return unused_tok
# ------------------------------------------------------------------------------
# unused_rules()
#
# Find all grammar rules that were defined, but not used (maybe not reachable)
# Returns a list of productions.
# ------------------------------------------------------------------------------
def unused_rules(self):
unused_prod = []
for s, v in self.Nonterminals.items():
if not v:
p = self.Prodnames[s][0]
unused_prod.append(p)
return unused_prod
# -----------------------------------------------------------------------------
# unused_precedence()
#
# Returns a list of tuples (term,precedence) corresponding to precedence
# rules that were never used by the grammar. term is the name of the terminal
# on which precedence was applied and precedence is a string such as 'left' or
# 'right' corresponding to the type of precedence.
# -----------------------------------------------------------------------------
def unused_precedence(self):
unused = []
for termname in self.Precedence:
if not (termname in self.Terminals or termname in self.UsedPrecedence):
unused.append((termname, self.Precedence[termname][0]))
return unused
# -------------------------------------------------------------------------
# _first()
#
# Compute the value of FIRST1(beta) where beta is a tuple of symbols.
#
# During execution of compute_first1, the result may be incomplete.
# Afterward (e.g., when called from compute_follow()), it will be complete.
# -------------------------------------------------------------------------
def _first(self, beta):
# We are computing First(x1,x2,x3,...,xn)
result = []
for x in beta:
x_produces_empty = False
# Add all the non-<empty> symbols of First[x] to the result.
for f in self.First[x]:
if f == '<empty>':
x_produces_empty = True
else:
if f not in result:
result.append(f)
if x_produces_empty:
# We have to consider the next x in beta,
# i.e. stay in the loop.
pass
else:
# We don't have to consider any further symbols in beta.
break
else:
# There was no 'break' from the loop,
# so x_produces_empty was true for all x in beta,
# so beta produces empty as well.
result.append('<empty>')
return result
# -------------------------------------------------------------------------
# compute_first()
#
# Compute the value of FIRST1(X) for all symbols
# -------------------------------------------------------------------------
def compute_first(self):
if self.First:
return self.First
# Terminals:
for t in self.Terminals:
self.First[t] = [t]
self.First['$end'] = ['$end']
# Nonterminals:
# Initialize to the empty set:
for n in self.Nonterminals:
self.First[n] = []
# Then propagate symbols until no change:
while True:
some_change = False
for n in self.Nonterminals:
for p in self.Prodnames[n]:
for f in self._first(p.prod):
if f not in self.First[n]:
self.First[n].append(f)
some_change = True
if not some_change:
break
return self.First
# ---------------------------------------------------------------------
# compute_follow()
#
# Computes all of the follow sets for every non-terminal symbol. The
# follow set is the set of all symbols that might follow a given
# non-terminal. See the Dragon book, 2nd Ed. p. 189.
# ---------------------------------------------------------------------
def compute_follow(self, start=None):
# If already computed, return the result
if self.Follow:
return self.Follow
# If first sets not computed yet, do that first.
if not self.First:
self.compute_first()
# Add '$end' to the follow list of the start symbol
for k in self.Nonterminals:
self.Follow[k] = []
if not start:
start = self.Productions[1].name
self.Follow[start] = ['$end']
while True:
didadd = False
for p in self.Productions[1:]:
# Here is the production set
for i, B in enumerate(p.prod):
if B in self.Nonterminals:
# Okay. We got a non-terminal in a production
fst = self._first(p.prod[i+1:])
hasempty = False
for f in fst:
if f != '<empty>' and f not in self.Follow[B]:
self.Follow[B].append(f)
didadd = True
if f == '<empty>':
hasempty = True
if hasempty or i == (len(p.prod)-1):
# Add elements of follow(a) to follow(b)
for f in self.Follow[p.name]:
if f not in self.Follow[B]:
self.Follow[B].append(f)
didadd = True
if not didadd:
break
return self.Follow
# -----------------------------------------------------------------------------
# build_lritems()
#
# This function walks the list of productions and builds a complete set of the
# LR items. The LR items are stored in two ways: First, they are uniquely
# numbered and placed in the list _lritems. Second, a linked list of LR items
# is built for each production. For example:
#
# E -> E PLUS E
#
# Creates the list
#
# [E -> . E PLUS E, E -> E . PLUS E, E -> E PLUS . E, E -> E PLUS E . ]
# -----------------------------------------------------------------------------
def build_lritems(self):
for p in self.Productions:
lastlri = p
i = 0
lr_items = []
while True:
if i > len(p):
lri = None
else:
lri = LRItem(p, i)
# Precompute the list of productions immediately following
try:
lri.lr_after = self.Prodnames[lri.prod[i+1]]
except (IndexError, KeyError):
lri.lr_after = []
try:
lri.lr_before = lri.prod[i-1]
except IndexError:
lri.lr_before = None
lastlri.lr_next = lri
if not lri:
break
lr_items.append(lri)
lastlri = lri
i += 1
p.lr_items = lr_items
# -----------------------------------------------------------------------------
# == Class LRTable ==
#
# This basic class represents a basic table of LR parsing information.
# Methods for generating the tables are not defined here. They are defined
# in the derived class LRGeneratedTable.
# -----------------------------------------------------------------------------
class VersionError(YaccError):
pass
class LRTable(object):
def __init__(self):
self.lr_action = None
self.lr_goto = None
self.lr_productions = None
self.lr_method = None
def read_table(self, module):
if isinstance(module, types.ModuleType):
parsetab = module
else:
exec('import %s' % module)
parsetab = sys.modules[module]
if parsetab._tabversion != __tabversion__:
raise VersionError('yacc table file version is out of date')
self.lr_action = parsetab._lr_action
self.lr_goto = parsetab._lr_goto
self.lr_productions = []
for p in parsetab._lr_productions:
self.lr_productions.append(MiniProduction(*p))
self.lr_method = parsetab._lr_method
return parsetab._lr_signature
def read_pickle(self, filename):
try:
import cPickle as pickle
except ImportError:
import pickle
if not os.path.exists(filename):
raise ImportError
in_f = open(filename, 'rb')
tabversion = pickle.load(in_f)
if tabversion != __tabversion__:
raise VersionError('yacc table file version is out of date')
self.lr_method = pickle.load(in_f)
signature = pickle.load(in_f)
self.lr_action = pickle.load(in_f)
self.lr_goto = pickle.load(in_f)
productions = pickle.load(in_f)
self.lr_productions = []
for p in productions:
self.lr_productions.append(MiniProduction(*p))
in_f.close()
return signature
# Bind all production function names to callable objects in pdict
def bind_callables(self, pdict):
for p in self.lr_productions:
p.bind(pdict)
# -----------------------------------------------------------------------------
# === LR Generator ===
#
# The following classes and functions are used to generate LR parsing tables on
# a grammar.
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
# digraph()
# traverse()
#
# The following two functions are used to compute set valued functions
# of the form:
#
# F(x) = F'(x) U U{F(y) | x R y}
#
# This is used to compute the values of Read() sets as well as FOLLOW sets
# in LALR(1) generation.
#
# Inputs: X - An input set
# R - A relation
# FP - Set-valued function
# ------------------------------------------------------------------------------
def digraph(X, R, FP):
N = {}
for x in X:
N[x] = 0
stack = []
F = {}
for x in X:
if N[x] == 0:
traverse(x, N, stack, F, X, R, FP)
return F
def traverse(x, N, stack, F, X, R, FP):
stack.append(x)
d = len(stack)
N[x] = d
F[x] = FP(x) # F(X) <- F'(x)
rel = R(x) # Get y's related to x
for y in rel:
if N[y] == 0:
traverse(y, N, stack, F, X, R, FP)
N[x] = min(N[x], N[y])
for a in F.get(y, []):
if a not in F[x]:
F[x].append(a)
if N[x] == d:
N[stack[-1]] = MAXINT
F[stack[-1]] = F[x]
element = stack.pop()
while element != x:
N[stack[-1]] = MAXINT
F[stack[-1]] = F[x]
element = stack.pop()
class LALRError(YaccError):
pass
# -----------------------------------------------------------------------------
# == LRGeneratedTable ==
#
# This class implements the LR table generation algorithm. There are no
# public methods except for write()
# -----------------------------------------------------------------------------
class LRGeneratedTable(LRTable):
def __init__(self, grammar, method='LALR', log=None):
if method not in ['SLR', 'LALR']:
raise LALRError('Unsupported method %s' % method)
self.grammar = grammar
self.lr_method = method
# Set up the logger
if not log:
log = NullLogger()
self.log = log
# Internal attributes
self.lr_action = {} # Action table
self.lr_goto = {} # Goto table
self.lr_productions = grammar.Productions # Copy of grammar Production array
self.lr_goto_cache = {} # Cache of computed gotos
self.lr0_cidhash = {} # Cache of closures
self._add_count = 0 # Internal counter used to detect cycles
# Diagonistic information filled in by the table generator
self.sr_conflict = 0
self.rr_conflict = 0
self.conflicts = [] # List of conflicts
self.sr_conflicts = []
self.rr_conflicts = []
# Build the tables
self.grammar.build_lritems()
self.grammar.compute_first()
self.grammar.compute_follow()
self.lr_parse_table()
# Compute the LR(0) closure operation on I, where I is a set of LR(0) items.
def lr0_closure(self, I):
self._add_count += 1
# Add everything in I to J
J = I[:]
didadd = True
while didadd:
didadd = False
for j in J:
for x in j.lr_after:
if getattr(x, 'lr0_added', 0) == self._add_count:
continue
# Add B --> .G to J
J.append(x.lr_next)
x.lr0_added = self._add_count
didadd = True
return J
# Compute the LR(0) goto function goto(I,X) where I is a set
# of LR(0) items and X is a grammar symbol. This function is written
# in a way that guarantees uniqueness of the generated goto sets
# (i.e. the same goto set will never be returned as two different Python
# objects). With uniqueness, we can later do fast set comparisons using
# id(obj) instead of element-wise comparison.
def lr0_goto(self, I, x):
# First we look for a previously cached entry
g = self.lr_goto_cache.get((id(I), x))
if g:
return g
# Now we generate the goto set in a way that guarantees uniqueness
# of the result
s = self.lr_goto_cache.get(x)
if not s:
s = {}
self.lr_goto_cache[x] = s
gs = []
for p in I:
n = p.lr_next
if n and n.lr_before == x:
s1 = s.get(id(n))
if not s1:
s1 = {}
s[id(n)] = s1
gs.append(n)
s = s1
g = s.get('$end')
if not g:
if gs:
g = self.lr0_closure(gs)
s['$end'] = g
else:
s['$end'] = gs
self.lr_goto_cache[(id(I), x)] = g
return g
# Compute the LR(0) sets of item function
def lr0_items(self):
C = [self.lr0_closure([self.grammar.Productions[0].lr_next])]
i = 0
for I in C:
self.lr0_cidhash[id(I)] = i
i += 1
# Loop over the items in C and each grammar symbols
i = 0
while i < len(C):
I = C[i]
i += 1
# Collect all of the symbols that could possibly be in the goto(I,X) sets
asyms = {}
for ii in I:
for s in ii.usyms:
asyms[s] = None
for x in asyms:
g = self.lr0_goto(I, x)
if not g or id(g) in self.lr0_cidhash:
continue
self.lr0_cidhash[id(g)] = len(C)
C.append(g)
return C
# -----------------------------------------------------------------------------
# ==== LALR(1) Parsing ====
#
# LALR(1) parsing is almost exactly the same as SLR except that instead of
# relying upon Follow() sets when performing reductions, a more selective
# lookahead set that incorporates the state of the LR(0) machine is utilized.
# Thus, we mainly just have to focus on calculating the lookahead sets.
#
# The method used here is due to DeRemer and Pennelo (1982).
#
# DeRemer, F. L., and T. J. Pennelo: "Efficient Computation of LALR(1)
# Lookahead Sets", ACM Transactions on Programming Languages and Systems,
# Vol. 4, No. 4, Oct. 1982, pp. 615-649
#
# Further details can also be found in:
#
# J. Tremblay and P. Sorenson, "The Theory and Practice of Compiler Writing",
# McGraw-Hill Book Company, (1985).
#
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
# compute_nullable_nonterminals()
#
# Creates a dictionary containing all of the non-terminals that might produce
# an empty production.
# -----------------------------------------------------------------------------
def compute_nullable_nonterminals(self):
nullable = set()
num_nullable = 0
while True:
for p in self.grammar.Productions[1:]:
if p.len == 0:
nullable.add(p.name)
continue
for t in p.prod:
if t not in nullable:
break
else:
nullable.add(p.name)
if len(nullable) == num_nullable:
break
num_nullable = len(nullable)
return nullable
# -----------------------------------------------------------------------------
# find_nonterminal_trans(C)
#
# Given a set of LR(0) items, this functions finds all of the non-terminal
# transitions. These are transitions in which a dot appears immediately before
# a non-terminal. Returns a list of tuples of the form (state,N) where state
# is the state number and N is the nonterminal symbol.
#
# The input C is the set of LR(0) items.
# -----------------------------------------------------------------------------
def find_nonterminal_transitions(self, C):
trans = []
for stateno, state in enumerate(C):
for p in state:
if p.lr_index < p.len - 1:
t = (stateno, p.prod[p.lr_index+1])
if t[1] in self.grammar.Nonterminals:
if t not in trans:
trans.append(t)
return trans
# -----------------------------------------------------------------------------
# dr_relation()
#
# Computes the DR(p,A) relationships for non-terminal transitions. The input
# is a tuple (state,N) where state is a number and N is a nonterminal symbol.
#
# Returns a list of terminals.
# -----------------------------------------------------------------------------
def dr_relation(self, C, trans, nullable):
dr_set = {}
state, N = trans
terms = []
g = self.lr0_goto(C[state], N)
for p in g:
if p.lr_index < p.len - 1:
a = p.prod[p.lr_index+1]
if a in self.grammar.Terminals:
if a not in terms:
terms.append(a)
# This extra bit is to handle the start state
if state == 0 and N == self.grammar.Productions[0].prod[0]:
terms.append('$end')
return terms
# -----------------------------------------------------------------------------
# reads_relation()
#
# Computes the READS() relation (p,A) READS (t,C).
# -----------------------------------------------------------------------------
def reads_relation(self, C, trans, empty):
# Look for empty transitions
rel = []
state, N = trans
g = self.lr0_goto(C[state], N)
j = self.lr0_cidhash.get(id(g), -1)
for p in g:
if p.lr_index < p.len - 1:
a = p.prod[p.lr_index + 1]
if a in empty:
rel.append((j, a))
return rel
# -----------------------------------------------------------------------------
# compute_lookback_includes()
#
# Determines the lookback and includes relations
#
# LOOKBACK:
#
# This relation is determined by running the LR(0) state machine forward.
# For example, starting with a production "N : . A B C", we run it forward
# to obtain "N : A B C ." We then build a relationship between this final
# state and the starting state. These relationships are stored in a dictionary
# lookdict.
#
# INCLUDES:
#
# Computes the INCLUDE() relation (p,A) INCLUDES (p',B).
#
# This relation is used to determine non-terminal transitions that occur
# inside of other non-terminal transition states. (p,A) INCLUDES (p', B)
# if the following holds:
#
# B -> LAT, where T -> epsilon and p' -L-> p
#
# L is essentially a prefix (which may be empty), T is a suffix that must be
# able to derive an empty string. State p' must lead to state p with the string L.
#
# -----------------------------------------------------------------------------
def compute_lookback_includes(self, C, trans, nullable):
lookdict = {} # Dictionary of lookback relations
includedict = {} # Dictionary of include relations
# Make a dictionary of non-terminal transitions
dtrans = {}
for t in trans:
dtrans[t] = 1
# Loop over all transitions and compute lookbacks and includes
for state, N in trans:
lookb = []
includes = []
for p in C[state]:
if p.name != N:
continue
# Okay, we have a name match. We now follow the production all the way
# through the state machine until we get the . on the right hand side
lr_index = p.lr_index
j = state
while lr_index < p.len - 1:
lr_index = lr_index + 1
t = p.prod[lr_index]
# Check to see if this symbol and state are a non-terminal transition
if (j, t) in dtrans:
# Yes. Okay, there is some chance that this is an includes relation
# the only way to know for certain is whether the rest of the
# production derives empty
li = lr_index + 1
while li < p.len:
if p.prod[li] in self.grammar.Terminals:
break # No forget it
if p.prod[li] not in nullable:
break
li = li + 1
else:
# Appears to be a relation between (j,t) and (state,N)
includes.append((j, t))
g = self.lr0_goto(C[j], t) # Go to next set
j = self.lr0_cidhash.get(id(g), -1) # Go to next state
# When we get here, j is the final state, now we have to locate the production
for r in C[j]:
if r.name != p.name:
continue
if r.len != p.len:
continue
i = 0
# This look is comparing a production ". A B C" with "A B C ."
while i < r.lr_index:
if r.prod[i] != p.prod[i+1]:
break
i = i + 1
else:
lookb.append((j, r))
for i in includes:
if i not in includedict:
includedict[i] = []
includedict[i].append((state, N))
lookdict[(state, N)] = lookb
return lookdict, includedict
# -----------------------------------------------------------------------------
# compute_read_sets()
#
# Given a set of LR(0) items, this function computes the read sets.
#
# Inputs: C = Set of LR(0) items
# ntrans = Set of nonterminal transitions
# nullable = Set of empty transitions
#
# Returns a set containing the read sets
# -----------------------------------------------------------------------------
def compute_read_sets(self, C, ntrans, nullable):
FP = lambda x: self.dr_relation(C, x, nullable)
R = lambda x: self.reads_relation(C, x, nullable)
F = digraph(ntrans, R, FP)
return F
# -----------------------------------------------------------------------------
# compute_follow_sets()
#
# Given a set of LR(0) items, a set of non-terminal transitions, a readset,
# and an include set, this function computes the follow sets
#
# Follow(p,A) = Read(p,A) U U {Follow(p',B) | (p,A) INCLUDES (p',B)}
#
# Inputs:
# ntrans = Set of nonterminal transitions
# readsets = Readset (previously computed)
# inclsets = Include sets (previously computed)
#
# Returns a set containing the follow sets
# -----------------------------------------------------------------------------
def compute_follow_sets(self, ntrans, readsets, inclsets):
FP = lambda x: readsets[x]
R = lambda x: inclsets.get(x, [])
F = digraph(ntrans, R, FP)
return F
# -----------------------------------------------------------------------------
# add_lookaheads()
#
# Attaches the lookahead symbols to grammar rules.
#
# Inputs: lookbacks - Set of lookback relations
# followset - Computed follow set
#
# This function directly attaches the lookaheads to productions contained
# in the lookbacks set
# -----------------------------------------------------------------------------
def add_lookaheads(self, lookbacks, followset):
for trans, lb in lookbacks.items():
# Loop over productions in lookback
for state, p in lb:
if state not in p.lookaheads:
p.lookaheads[state] = []
f = followset.get(trans, [])
for a in f:
if a not in p.lookaheads[state]:
p.lookaheads[state].append(a)
# -----------------------------------------------------------------------------
# add_lalr_lookaheads()
#
# This function does all of the work of adding lookahead information for use
# with LALR parsing
# -----------------------------------------------------------------------------
def add_lalr_lookaheads(self, C):
# Determine all of the nullable nonterminals
nullable = self.compute_nullable_nonterminals()
# Find all non-terminal transitions
trans = self.find_nonterminal_transitions(C)
# Compute read sets
readsets = self.compute_read_sets(C, trans, nullable)
# Compute lookback/includes relations
lookd, included = self.compute_lookback_includes(C, trans, nullable)
# Compute LALR FOLLOW sets
followsets = self.compute_follow_sets(trans, readsets, included)
# Add all of the lookaheads
self.add_lookaheads(lookd, followsets)
# -----------------------------------------------------------------------------
# lr_parse_table()
#
# This function constructs the parse tables for SLR or LALR
# -----------------------------------------------------------------------------
def lr_parse_table(self):
Productions = self.grammar.Productions
Precedence = self.grammar.Precedence
goto = self.lr_goto # Goto array
action = self.lr_action # Action array
log = self.log # Logger for output
actionp = {} # Action production array (temporary)
log.info('Parsing method: %s', self.lr_method)
# Step 1: Construct C = { I0, I1, ... IN}, collection of LR(0) items
# This determines the number of states
C = self.lr0_items()
if self.lr_method == 'LALR':
self.add_lalr_lookaheads(C)
# Build the parser table, state by state
st = 0
for I in C:
# Loop over each production in I
actlist = [] # List of actions
st_action = {}
st_actionp = {}
st_goto = {}
log.info('')
log.info('state %d', st)
log.info('')
for p in I:
log.info(' (%d) %s', p.number, p)
log.info('')
for p in I:
if p.len == p.lr_index + 1:
if p.name == "S'":
# Start symbol. Accept!
st_action['$end'] = 0
st_actionp['$end'] = p
else:
# We are at the end of a production. Reduce!
if self.lr_method == 'LALR':
laheads = p.lookaheads[st]
else:
laheads = self.grammar.Follow[p.name]
for a in laheads:
actlist.append((a, p, 'reduce using rule %d (%s)' % (p.number, p)))
r = st_action.get(a)
if r is not None:
# Whoa. Have a shift/reduce or reduce/reduce conflict
if r > 0:
# Need to decide on shift or reduce here
# By default we favor shifting. Need to add
# some precedence rules here.
# Shift precedence comes from the token
sprec, slevel = Precedence.get(a, ('right', 0))
# Reduce precedence comes from rule being reduced (p)
rprec, rlevel = Productions[p.number].prec
if (slevel < rlevel) or ((slevel == rlevel) and (rprec == 'left')):
# We really need to reduce here.
st_action[a] = -p.number
st_actionp[a] = p
if not slevel and not rlevel:
log.info(' ! shift/reduce conflict for %s resolved as reduce', a)
self.sr_conflicts.append((st, a, 'reduce'))
Productions[p.number].reduced += 1
elif (slevel == rlevel) and (rprec == 'nonassoc'):
st_action[a] = None
else:
# Hmmm. Guess we'll keep the shift
if not rlevel:
log.info(' ! shift/reduce conflict for %s resolved as shift', a)
self.sr_conflicts.append((st, a, 'shift'))
elif r < 0:
# Reduce/reduce conflict. In this case, we favor the rule
# that was defined first in the grammar file
oldp = Productions[-r]
pp = Productions[p.number]
if oldp.line > pp.line:
st_action[a] = -p.number
st_actionp[a] = p
chosenp, rejectp = pp, oldp
Productions[p.number].reduced += 1
Productions[oldp.number].reduced -= 1
else:
chosenp, rejectp = oldp, pp
self.rr_conflicts.append((st, chosenp, rejectp))
log.info(' ! reduce/reduce conflict for %s resolved using rule %d (%s)',
a, st_actionp[a].number, st_actionp[a])
else:
raise LALRError('Unknown conflict in state %d' % st)
else:
st_action[a] = -p.number
st_actionp[a] = p
Productions[p.number].reduced += 1
else:
i = p.lr_index
a = p.prod[i+1] # Get symbol right after the "."
if a in self.grammar.Terminals:
g = self.lr0_goto(I, a)
j = self.lr0_cidhash.get(id(g), -1)
if j >= 0:
# We are in a shift state
actlist.append((a, p, 'shift and go to state %d' % j))
r = st_action.get(a)
if r is not None:
# Whoa have a shift/reduce or shift/shift conflict
if r > 0:
if r != j:
raise LALRError('Shift/shift conflict in state %d' % st)
elif r < 0:
# Do a precedence check.
# - if precedence of reduce rule is higher, we reduce.
# - if precedence of reduce is same and left assoc, we reduce.
# - otherwise we shift
# Shift precedence comes from the token
sprec, slevel = Precedence.get(a, ('right', 0))
# Reduce precedence comes from the rule that could have been reduced
rprec, rlevel = Productions[st_actionp[a].number].prec
if (slevel > rlevel) or ((slevel == rlevel) and (rprec == 'right')):
# We decide to shift here... highest precedence to shift
Productions[st_actionp[a].number].reduced -= 1
st_action[a] = j
st_actionp[a] = p
if not rlevel:
log.info(' ! shift/reduce conflict for %s resolved as shift', a)
self.sr_conflicts.append((st, a, 'shift'))
elif (slevel == rlevel) and (rprec == 'nonassoc'):
st_action[a] = None
else:
# Hmmm. Guess we'll keep the reduce
if not slevel and not rlevel:
log.info(' ! shift/reduce conflict for %s resolved as reduce', a)
self.sr_conflicts.append((st, a, 'reduce'))
else:
raise LALRError('Unknown conflict in state %d' % st)
else:
st_action[a] = j
st_actionp[a] = p
# Print the actions associated with each terminal
_actprint = {}
for a, p, m in actlist:
if a in st_action:
if p is st_actionp[a]:
log.info(' %-15s %s', a, m)
_actprint[(a, m)] = 1
log.info('')
# Print the actions that were not used. (debugging)
not_used = 0
for a, p, m in actlist:
if a in st_action:
if p is not st_actionp[a]:
if not (a, m) in _actprint:
log.debug(' ! %-15s [ %s ]', a, m)
not_used = 1
_actprint[(a, m)] = 1
if not_used:
log.debug('')
# Construct the goto table for this state
nkeys = {}
for ii in I:
for s in ii.usyms:
if s in self.grammar.Nonterminals:
nkeys[s] = None
for n in nkeys:
g = self.lr0_goto(I, n)
j = self.lr0_cidhash.get(id(g), -1)
if j >= 0:
st_goto[n] = j
log.info(' %-30s shift and go to state %d', n, j)
action[st] = st_action
actionp[st] = st_actionp
goto[st] = st_goto
st += 1
# -----------------------------------------------------------------------------
# write()
#
# This function writes the LR parsing tables to a file
# -----------------------------------------------------------------------------
def write_table(self, tabmodule, outputdir='', signature=''):
if isinstance(tabmodule, types.ModuleType):
raise IOError("Won't overwrite existing tabmodule")
basemodulename = tabmodule.split('.')[-1]
filename = os.path.join(outputdir, basemodulename) + '.py'
try:
f = open(filename, 'w')
f.write('''
# %s
# This file is automatically generated. Do not edit.
_tabversion = %r
_lr_method = %r
_lr_signature = %r
''' % (os.path.basename(filename), __tabversion__, self.lr_method, signature))
# Change smaller to 0 to go back to original tables
smaller = 1
# Factor out names to try and make smaller
if smaller:
items = {}
for s, nd in self.lr_action.items():
for name, v in nd.items():
i = items.get(name)
if not i:
i = ([], [])
items[name] = i
i[0].append(s)
i[1].append(v)
f.write('\n_lr_action_items = {')
for k, v in items.items():
f.write('%r:([' % k)
for i in v[0]:
f.write('%r,' % i)
f.write('],[')
for i in v[1]:
f.write('%r,' % i)
f.write(']),')
f.write('}\n')
f.write('''
_lr_action = {}
for _k, _v in _lr_action_items.items():
for _x,_y in zip(_v[0],_v[1]):
if not _x in _lr_action: _lr_action[_x] = {}
_lr_action[_x][_k] = _y
del _lr_action_items
''')
else:
f.write('\n_lr_action = { ')
for k, v in self.lr_action.items():
f.write('(%r,%r):%r,' % (k[0], k[1], v))
f.write('}\n')
if smaller:
# Factor out names to try and make smaller
items = {}
for s, nd in self.lr_goto.items():
for name, v in nd.items():
i = items.get(name)
if not i:
i = ([], [])
items[name] = i
i[0].append(s)
i[1].append(v)
f.write('\n_lr_goto_items = {')
for k, v in items.items():
f.write('%r:([' % k)
for i in v[0]:
f.write('%r,' % i)
f.write('],[')
for i in v[1]:
f.write('%r,' % i)
f.write(']),')
f.write('}\n')
f.write('''
_lr_goto = {}
for _k, _v in _lr_goto_items.items():
for _x, _y in zip(_v[0], _v[1]):
if not _x in _lr_goto: _lr_goto[_x] = {}
_lr_goto[_x][_k] = _y
del _lr_goto_items
''')
else:
f.write('\n_lr_goto = { ')
for k, v in self.lr_goto.items():
f.write('(%r,%r):%r,' % (k[0], k[1], v))
f.write('}\n')
# Write production table
f.write('_lr_productions = [\n')
for p in self.lr_productions:
if p.func:
f.write(' (%r,%r,%d,%r,%r,%d),\n' % (p.str, p.name, p.len,
p.func, os.path.basename(p.file), p.line))
else:
f.write(' (%r,%r,%d,None,None,None),\n' % (str(p), p.name, p.len))
f.write(']\n')
f.close()
except IOError as e:
raise
# -----------------------------------------------------------------------------
# pickle_table()
#
# This function pickles the LR parsing tables to a supplied file object
# -----------------------------------------------------------------------------
def pickle_table(self, filename, signature=''):
try:
import cPickle as pickle
except ImportError:
import pickle
with open(filename, 'wb') as outf:
pickle.dump(__tabversion__, outf, pickle_protocol)
pickle.dump(self.lr_method, outf, pickle_protocol)
pickle.dump(signature, outf, pickle_protocol)
pickle.dump(self.lr_action, outf, pickle_protocol)
pickle.dump(self.lr_goto, outf, pickle_protocol)
outp = []
for p in self.lr_productions:
if p.func:
outp.append((p.str, p.name, p.len, p.func, os.path.basename(p.file), p.line))
else:
outp.append((str(p), p.name, p.len, None, None, None))
pickle.dump(outp, outf, pickle_protocol)
# -----------------------------------------------------------------------------
# === INTROSPECTION ===
#
# The following functions and classes are used to implement the PLY
# introspection features followed by the yacc() function itself.
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
# get_caller_module_dict()
#
# This function returns a dictionary containing all of the symbols defined within
# a caller further down the call stack. This is used to get the environment
# associated with the yacc() call if none was provided.
# -----------------------------------------------------------------------------
def get_caller_module_dict(levels):
f = sys._getframe(levels)
ldict = f.f_globals.copy()
if f.f_globals != f.f_locals:
ldict.update(f.f_locals)
return ldict
# -----------------------------------------------------------------------------
# parse_grammar()
#
# This takes a raw grammar rule string and parses it into production data
# -----------------------------------------------------------------------------
def parse_grammar(doc, file, line):
grammar = []
# Split the doc string into lines
pstrings = doc.splitlines()
lastp = None
dline = line
for ps in pstrings:
dline += 1
p = ps.split()
if not p:
continue
try:
if p[0] == '|':
# This is a continuation of a previous rule
if not lastp:
raise SyntaxError("%s:%d: Misplaced '|'" % (file, dline))
prodname = lastp
syms = p[1:]
else:
prodname = p[0]
lastp = prodname
syms = p[2:]
assign = p[1]
if assign != ':' and assign != '::=':
raise SyntaxError("%s:%d: Syntax error. Expected ':'" % (file, dline))
grammar.append((file, dline, prodname, syms))
except SyntaxError:
raise
except Exception:
raise SyntaxError('%s:%d: Syntax error in rule %r' % (file, dline, ps.strip()))
return grammar
# -----------------------------------------------------------------------------
# ParserReflect()
#
# This class represents information extracted for building a parser including
# start symbol, error function, tokens, precedence list, action functions,
# etc.
# -----------------------------------------------------------------------------
class ParserReflect(object):
def __init__(self, pdict, log=None):
self.pdict = pdict
self.start = None
self.error_func = None
self.tokens = None
self.modules = set()
self.grammar = []
self.error = False
if log is None:
self.log = PlyLogger(sys.stderr)
else:
self.log = log
# Get all of the basic information
def get_all(self):
self.get_start()
self.get_error_func()
self.get_tokens()
self.get_precedence()
self.get_pfunctions()
# Validate all of the information
def validate_all(self):
self.validate_start()
self.validate_error_func()
self.validate_tokens()
self.validate_precedence()
self.validate_pfunctions()
self.validate_modules()
return self.error
# Compute a signature over the grammar
def signature(self):
parts = []
try:
if self.start:
parts.append(self.start)
if self.prec:
parts.append(''.join([''.join(p) for p in self.prec]))
if self.tokens:
parts.append(' '.join(self.tokens))
for f in self.pfuncs:
if f[3]:
parts.append(f[3])
except (TypeError, ValueError):
pass
return ''.join(parts)
# -----------------------------------------------------------------------------
# validate_modules()
#
# This method checks to see if there are duplicated p_rulename() functions
# in the parser module file. Without this function, it is really easy for
# users to make mistakes by cutting and pasting code fragments (and it's a real
# bugger to try and figure out why the resulting parser doesn't work). Therefore,
# we just do a little regular expression pattern matching of def statements
# to try and detect duplicates.
# -----------------------------------------------------------------------------
def validate_modules(self):
# Match def p_funcname(
fre = re.compile(r'\s*def\s+(p_[a-zA-Z_0-9]*)\(')
for module in self.modules:
try:
lines, linen = inspect.getsourcelines(module)
except IOError:
continue
counthash = {}
for linen, line in enumerate(lines):
linen += 1
m = fre.match(line)
if m:
name = m.group(1)
prev = counthash.get(name)
if not prev:
counthash[name] = linen
else:
filename = inspect.getsourcefile(module)
self.log.warning('%s:%d: Function %s redefined. Previously defined on line %d',
filename, linen, name, prev)
# Get the start symbol
def get_start(self):
self.start = self.pdict.get('start')
# Validate the start symbol
def validate_start(self):
if self.start is not None:
if not isinstance(self.start, string_types):
self.log.error("'start' must be a string")
# Look for error handler
def get_error_func(self):
self.error_func = self.pdict.get('p_error')
# Validate the error function
def validate_error_func(self):
if self.error_func:
if isinstance(self.error_func, types.FunctionType):
ismethod = 0
elif isinstance(self.error_func, types.MethodType):
ismethod = 1
else:
self.log.error("'p_error' defined, but is not a function or method")
self.error = True
return
eline = self.error_func.__code__.co_firstlineno
efile = self.error_func.__code__.co_filename
module = inspect.getmodule(self.error_func)
self.modules.add(module)
argcount = self.error_func.__code__.co_argcount - ismethod
if argcount != 1:
self.log.error('%s:%d: p_error() requires 1 argument', efile, eline)
self.error = True
# Get the tokens map
def get_tokens(self):
tokens = self.pdict.get('tokens')
if not tokens:
self.log.error('No token list is defined')
self.error = True
return
if not isinstance(tokens, (list, tuple)):
self.log.error('tokens must be a list or tuple')
self.error = True
return
if not tokens:
self.log.error('tokens is empty')
self.error = True
return
self.tokens = tokens
# Validate the tokens
def validate_tokens(self):
# Validate the tokens.
if 'error' in self.tokens:
self.log.error("Illegal token name 'error'. Is a reserved word")
self.error = True
return
terminals = set()
for n in self.tokens:
if n in terminals:
self.log.warning('Token %r multiply defined', n)
terminals.add(n)
# Get the precedence map (if any)
def get_precedence(self):
self.prec = self.pdict.get('precedence')
# Validate and parse the precedence map
def validate_precedence(self):
preclist = []
if self.prec:
if not isinstance(self.prec, (list, tuple)):
self.log.error('precedence must be a list or tuple')
self.error = True
return
for level, p in enumerate(self.prec):
if not isinstance(p, (list, tuple)):
self.log.error('Bad precedence table')
self.error = True
return
if len(p) < 2:
self.log.error('Malformed precedence entry %s. Must be (assoc, term, ..., term)', p)
self.error = True
return
assoc = p[0]
if not isinstance(assoc, string_types):
self.log.error('precedence associativity must be a string')
self.error = True
return
for term in p[1:]:
if not isinstance(term, string_types):
self.log.error('precedence items must be strings')
self.error = True
return
preclist.append((term, assoc, level+1))
self.preclist = preclist
# Get all p_functions from the grammar
def get_pfunctions(self):
p_functions = []
for name, item in self.pdict.items():
if not name.startswith('p_') or name == 'p_error':
continue
if isinstance(item, (types.FunctionType, types.MethodType)):
line = getattr(item, 'co_firstlineno', item.__code__.co_firstlineno)
module = inspect.getmodule(item)
p_functions.append((line, module, name, item.__doc__))
# Sort all of the actions by line number; make sure to stringify
# modules to make them sortable, since `line` may not uniquely sort all
# p functions
p_functions.sort(key=lambda p_function: (
p_function[0],
str(p_function[1]),
p_function[2],
p_function[3]))
self.pfuncs = p_functions
# Validate all of the p_functions
def validate_pfunctions(self):
grammar = []
# Check for non-empty symbols
if len(self.pfuncs) == 0:
self.log.error('no rules of the form p_rulename are defined')
self.error = True
return
for line, module, name, doc in self.pfuncs:
file = inspect.getsourcefile(module)
func = self.pdict[name]
if isinstance(func, types.MethodType):
reqargs = 2
else:
reqargs = 1
if func.__code__.co_argcount > reqargs:
self.log.error('%s:%d: Rule %r has too many arguments', file, line, func.__name__)
self.error = True
elif func.__code__.co_argcount < reqargs:
self.log.error('%s:%d: Rule %r requires an argument', file, line, func.__name__)
self.error = True
elif not func.__doc__:
self.log.warning('%s:%d: No documentation string specified in function %r (ignored)',
file, line, func.__name__)
else:
try:
parsed_g = parse_grammar(doc, file, line)
for g in parsed_g:
grammar.append((name, g))
except SyntaxError as e:
self.log.error(str(e))
self.error = True
# Looks like a valid grammar rule
# Mark the file in which defined.
self.modules.add(module)
# Secondary validation step that looks for p_ definitions that are not functions
# or functions that look like they might be grammar rules.
for n, v in self.pdict.items():
if n.startswith('p_') and isinstance(v, (types.FunctionType, types.MethodType)):
continue
if n.startswith('t_'):
continue
if n.startswith('p_') and n != 'p_error':
self.log.warning('%r not defined as a function', n)
if ((isinstance(v, types.FunctionType) and v.__code__.co_argcount == 1) or
(isinstance(v, types.MethodType) and v.__func__.__code__.co_argcount == 2)):
if v.__doc__:
try:
doc = v.__doc__.split(' ')
if doc[1] == ':':
self.log.warning('%s:%d: Possible grammar rule %r defined without p_ prefix',
v.__code__.co_filename, v.__code__.co_firstlineno, n)
except IndexError:
pass
self.grammar = grammar
# -----------------------------------------------------------------------------
# yacc(module)
#
# Build a parser
# -----------------------------------------------------------------------------
def yacc(method='LALR', debug=yaccdebug, module=None, tabmodule=tab_module, start=None,
check_recursion=True, optimize=False, write_tables=True, debugfile=debug_file,
outputdir=None, debuglog=None, errorlog=None, picklefile=None):
if tabmodule is None:
tabmodule = tab_module
# Reference to the parsing method of the last built parser
global parse
# If pickling is enabled, table files are not created
if picklefile:
write_tables = 0
if errorlog is None:
errorlog = PlyLogger(sys.stderr)
# Get the module dictionary used for the parser
if module:
_items = [(k, getattr(module, k)) for k in dir(module)]
pdict = dict(_items)
# If no __file__ attribute is available, try to obtain it from the __module__ instead
if '__file__' not in pdict:
pdict['__file__'] = sys.modules[pdict['__module__']].__file__
else:
pdict = get_caller_module_dict(2)
if outputdir is None:
# If no output directory is set, the location of the output files
# is determined according to the following rules:
# - If tabmodule specifies a package, files go into that package directory
# - Otherwise, files go in the same directory as the specifying module
if isinstance(tabmodule, types.ModuleType):
srcfile = tabmodule.__file__
else:
if '.' not in tabmodule:
srcfile = pdict['__file__']
else:
parts = tabmodule.split('.')
pkgname = '.'.join(parts[:-1])
exec('import %s' % pkgname)
srcfile = getattr(sys.modules[pkgname], '__file__', '')
outputdir = os.path.dirname(srcfile)
# Determine if the module is package of a package or not.
# If so, fix the tabmodule setting so that tables load correctly
pkg = pdict.get('__package__')
if pkg and isinstance(tabmodule, str):
if '.' not in tabmodule:
tabmodule = pkg + '.' + tabmodule
# Set start symbol if it's specified directly using an argument
if start is not None:
pdict['start'] = start
# Collect parser information from the dictionary
pinfo = ParserReflect(pdict, log=errorlog)
pinfo.get_all()
if pinfo.error:
raise YaccError('Unable to build parser')
# Check signature against table files (if any)
signature = pinfo.signature()
# Read the tables
try:
lr = LRTable()
if picklefile:
read_signature = lr.read_pickle(picklefile)
else:
read_signature = lr.read_table(tabmodule)
if optimize or (read_signature == signature):
try:
lr.bind_callables(pinfo.pdict)
parser = LRParser(lr, pinfo.error_func)
parse = parser.parse
return parser
except Exception as e:
errorlog.warning('There was a problem loading the table file: %r', e)
except VersionError as e:
errorlog.warning(str(e))
except ImportError:
pass
if debuglog is None:
if debug:
try:
debuglog = PlyLogger(open(os.path.join(outputdir, debugfile), 'w'))
except IOError as e:
errorlog.warning("Couldn't open %r. %s" % (debugfile, e))
debuglog = NullLogger()
else:
debuglog = NullLogger()
debuglog.info('Created by PLY version %s (http://www.dabeaz.com/ply)', __version__)
errors = False
# Validate the parser information
if pinfo.validate_all():
raise YaccError('Unable to build parser')
if not pinfo.error_func:
errorlog.warning('no p_error() function is defined')
# Create a grammar object
grammar = Grammar(pinfo.tokens)
# Set precedence level for terminals
for term, assoc, level in pinfo.preclist:
try:
grammar.set_precedence(term, assoc, level)
except GrammarError as e:
errorlog.warning('%s', e)
# Add productions to the grammar
for funcname, gram in pinfo.grammar:
file, line, prodname, syms = gram
try:
grammar.add_production(prodname, syms, funcname, file, line)
except GrammarError as e:
errorlog.error('%s', e)
errors = True
# Set the grammar start symbols
try:
if start is None:
grammar.set_start(pinfo.start)
else:
grammar.set_start(start)
except GrammarError as e:
errorlog.error(str(e))
errors = True
if errors:
raise YaccError('Unable to build parser')
# Verify the grammar structure
undefined_symbols = grammar.undefined_symbols()
for sym, prod in undefined_symbols:
errorlog.error('%s:%d: Symbol %r used, but not defined as a token or a rule', prod.file, prod.line, sym)
errors = True
unused_terminals = grammar.unused_terminals()
if unused_terminals:
debuglog.info('')
debuglog.info('Unused terminals:')
debuglog.info('')
for term in unused_terminals:
errorlog.warning('Token %r defined, but not used', term)
debuglog.info(' %s', term)
# Print out all productions to the debug log
if debug:
debuglog.info('')
debuglog.info('Grammar')
debuglog.info('')
for n, p in enumerate(grammar.Productions):
debuglog.info('Rule %-5d %s', n, p)
# Find unused non-terminals
unused_rules = grammar.unused_rules()
for prod in unused_rules:
errorlog.warning('%s:%d: Rule %r defined, but not used', prod.file, prod.line, prod.name)
if len(unused_terminals) == 1:
errorlog.warning('There is 1 unused token')
if len(unused_terminals) > 1:
errorlog.warning('There are %d unused tokens', len(unused_terminals))
if len(unused_rules) == 1:
errorlog.warning('There is 1 unused rule')
if len(unused_rules) > 1:
errorlog.warning('There are %d unused rules', len(unused_rules))
if debug:
debuglog.info('')
debuglog.info('Terminals, with rules where they appear')
debuglog.info('')
terms = list(grammar.Terminals)
terms.sort()
for term in terms:
debuglog.info('%-20s : %s', term, ' '.join([str(s) for s in grammar.Terminals[term]]))
debuglog.info('')
debuglog.info('Nonterminals, with rules where they appear')
debuglog.info('')
nonterms = list(grammar.Nonterminals)
nonterms.sort()
for nonterm in nonterms:
debuglog.info('%-20s : %s', nonterm, ' '.join([str(s) for s in grammar.Nonterminals[nonterm]]))
debuglog.info('')
if check_recursion:
unreachable = grammar.find_unreachable()
for u in unreachable:
errorlog.warning('Symbol %r is unreachable', u)
infinite = grammar.infinite_cycles()
for inf in infinite:
errorlog.error('Infinite recursion detected for symbol %r', inf)
errors = True
unused_prec = grammar.unused_precedence()
for term, assoc in unused_prec:
errorlog.error('Precedence rule %r defined for unknown symbol %r', assoc, term)
errors = True
if errors:
raise YaccError('Unable to build parser')
# Run the LRGeneratedTable on the grammar
if debug:
errorlog.debug('Generating %s tables', method)
lr = LRGeneratedTable(grammar, method, debuglog)
if debug:
num_sr = len(lr.sr_conflicts)
# Report shift/reduce and reduce/reduce conflicts
if num_sr == 1:
errorlog.warning('1 shift/reduce conflict')
elif num_sr > 1:
errorlog.warning('%d shift/reduce conflicts', num_sr)
num_rr = len(lr.rr_conflicts)
if num_rr == 1:
errorlog.warning('1 reduce/reduce conflict')
elif num_rr > 1:
errorlog.warning('%d reduce/reduce conflicts', num_rr)
# Write out conflicts to the output file
if debug and (lr.sr_conflicts or lr.rr_conflicts):
debuglog.warning('')
debuglog.warning('Conflicts:')
debuglog.warning('')
for state, tok, resolution in lr.sr_conflicts:
debuglog.warning('shift/reduce conflict for %s in state %d resolved as %s', tok, state, resolution)
already_reported = set()
for state, rule, rejected in lr.rr_conflicts:
if (state, id(rule), id(rejected)) in already_reported:
continue
debuglog.warning('reduce/reduce conflict in state %d resolved using rule (%s)', state, rule)
debuglog.warning('rejected rule (%s) in state %d', rejected, state)
errorlog.warning('reduce/reduce conflict in state %d resolved using rule (%s)', state, rule)
errorlog.warning('rejected rule (%s) in state %d', rejected, state)
already_reported.add((state, id(rule), id(rejected)))
warned_never = []
for state, rule, rejected in lr.rr_conflicts:
if not rejected.reduced and (rejected not in warned_never):
debuglog.warning('Rule (%s) is never reduced', rejected)
errorlog.warning('Rule (%s) is never reduced', rejected)
warned_never.append(rejected)
# Write the table file if requested
if write_tables:
try:
lr.write_table(tabmodule, outputdir, signature)
except IOError as e:
errorlog.warning("Couldn't create %r. %s" % (tabmodule, e))
# Write a pickled version of the tables
if picklefile:
try:
lr.pickle_table(picklefile, signature)
except IOError as e:
errorlog.warning("Couldn't create %r. %s" % (picklefile, e))
# Build the parser
lr.bind_callables(pinfo.pdict)
parser = LRParser(lr, pinfo.error_func)
parse = parser.parse
return parser
| 137,323 | Python | 38.291559 | 119 | 0.467358 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ply/__init__.py | # PLY package
# Author: David Beazley ([email protected])
__version__ = '3.9'
__all__ = ['lex','yacc']
| 102 | Python | 16.166664 | 41 | 0.588235 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ply/ctokens.py | # ----------------------------------------------------------------------
# ctokens.py
#
# Token specifications for symbols in ANSI C and C++. This file is
# meant to be used as a library in other tokenizers.
# ----------------------------------------------------------------------
# Reserved words
tokens = [
# Literals (identifier, integer constant, float constant, string constant, char const)
'ID', 'TYPEID', 'INTEGER', 'FLOAT', 'STRING', 'CHARACTER',
# Operators (+,-,*,/,%,|,&,~,^,<<,>>, ||, &&, !, <, <=, >, >=, ==, !=)
'PLUS', 'MINUS', 'TIMES', 'DIVIDE', 'MODULO',
'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
'LOR', 'LAND', 'LNOT',
'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
# Assignment (=, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=)
'EQUALS', 'TIMESEQUAL', 'DIVEQUAL', 'MODEQUAL', 'PLUSEQUAL', 'MINUSEQUAL',
'LSHIFTEQUAL','RSHIFTEQUAL', 'ANDEQUAL', 'XOREQUAL', 'OREQUAL',
# Increment/decrement (++,--)
'INCREMENT', 'DECREMENT',
# Structure dereference (->)
'ARROW',
# Ternary operator (?)
'TERNARY',
# Delimeters ( ) [ ] { } , . ; :
'LPAREN', 'RPAREN',
'LBRACKET', 'RBRACKET',
'LBRACE', 'RBRACE',
'COMMA', 'PERIOD', 'SEMI', 'COLON',
# Ellipsis (...)
'ELLIPSIS',
]
# Operators
t_PLUS = r'\+'
t_MINUS = r'-'
t_TIMES = r'\*'
t_DIVIDE = r'/'
t_MODULO = r'%'
t_OR = r'\|'
t_AND = r'&'
t_NOT = r'~'
t_XOR = r'\^'
t_LSHIFT = r'<<'
t_RSHIFT = r'>>'
t_LOR = r'\|\|'
t_LAND = r'&&'
t_LNOT = r'!'
t_LT = r'<'
t_GT = r'>'
t_LE = r'<='
t_GE = r'>='
t_EQ = r'=='
t_NE = r'!='
# Assignment operators
t_EQUALS = r'='
t_TIMESEQUAL = r'\*='
t_DIVEQUAL = r'/='
t_MODEQUAL = r'%='
t_PLUSEQUAL = r'\+='
t_MINUSEQUAL = r'-='
t_LSHIFTEQUAL = r'<<='
t_RSHIFTEQUAL = r'>>='
t_ANDEQUAL = r'&='
t_OREQUAL = r'\|='
t_XOREQUAL = r'\^='
# Increment/decrement
t_INCREMENT = r'\+\+'
t_DECREMENT = r'--'
# ->
t_ARROW = r'->'
# ?
t_TERNARY = r'\?'
# Delimeters
t_LPAREN = r'\('
t_RPAREN = r'\)'
t_LBRACKET = r'\['
t_RBRACKET = r'\]'
t_LBRACE = r'\{'
t_RBRACE = r'\}'
t_COMMA = r','
t_PERIOD = r'\.'
t_SEMI = r';'
t_COLON = r':'
t_ELLIPSIS = r'\.\.\.'
# Identifiers
t_ID = r'[A-Za-z_][A-Za-z0-9_]*'
# Integer literal
t_INTEGER = r'\d+([uU]|[lL]|[uU][lL]|[lL][uU])?'
# Floating literal
t_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
# String literal
t_STRING = r'\"([^\\\n]|(\\.))*?\"'
# Character constant 'c' or L'c'
t_CHARACTER = r'(L)?\'([^\\\n]|(\\.))*?\''
# Comment (C-Style)
def t_COMMENT(t):
r'/\*(.|\n)*?\*/'
t.lexer.lineno += t.value.count('\n')
return t
# Comment (C++-Style)
def t_CPPCOMMENT(t):
r'//.*\n'
t.lexer.lineno += 1
return t
| 3,177 | Python | 22.716418 | 90 | 0.393768 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ply/ygen.py | # ply: ygen.py
#
# This is a support program that auto-generates different versions of the YACC parsing
# function with different features removed for the purposes of performance.
#
# Users should edit the method LParser.parsedebug() in yacc.py. The source code
# for that method is then used to create the other methods. See the comments in
# yacc.py for further details.
import os.path
import shutil
def get_source_range(lines, tag):
srclines = enumerate(lines)
start_tag = '#--! %s-start' % tag
end_tag = '#--! %s-end' % tag
for start_index, line in srclines:
if line.strip().startswith(start_tag):
break
for end_index, line in srclines:
if line.strip().endswith(end_tag):
break
return (start_index + 1, end_index)
def filter_section(lines, tag):
filtered_lines = []
include = True
tag_text = '#--! %s' % tag
for line in lines:
if line.strip().startswith(tag_text):
include = not include
elif include:
filtered_lines.append(line)
return filtered_lines
def main():
dirname = os.path.dirname(__file__)
shutil.copy2(os.path.join(dirname, 'yacc.py'), os.path.join(dirname, 'yacc.py.bak'))
with open(os.path.join(dirname, 'yacc.py'), 'r') as f:
lines = f.readlines()
parse_start, parse_end = get_source_range(lines, 'parsedebug')
parseopt_start, parseopt_end = get_source_range(lines, 'parseopt')
parseopt_notrack_start, parseopt_notrack_end = get_source_range(lines, 'parseopt-notrack')
# Get the original source
orig_lines = lines[parse_start:parse_end]
# Filter the DEBUG sections out
parseopt_lines = filter_section(orig_lines, 'DEBUG')
# Filter the TRACKING sections out
parseopt_notrack_lines = filter_section(parseopt_lines, 'TRACKING')
# Replace the parser source sections with updated versions
lines[parseopt_notrack_start:parseopt_notrack_end] = parseopt_notrack_lines
lines[parseopt_start:parseopt_end] = parseopt_lines
lines = [line.rstrip()+'\n' for line in lines]
with open(os.path.join(dirname, 'yacc.py'), 'w') as f:
f.writelines(lines)
print('Updated yacc.py')
if __name__ == '__main__':
main()
| 2,251 | Python | 29.026666 | 94 | 0.657486 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pycparser/ply/lex.py | # -----------------------------------------------------------------------------
# ply: lex.py
#
# Copyright (C) 2001-2017
# David M. Beazley (Dabeaz LLC)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of the David Beazley or Dabeaz LLC may be used to
# endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# -----------------------------------------------------------------------------
__version__ = '3.10'
__tabversion__ = '3.10'
import re
import sys
import types
import copy
import os
import inspect
# This tuple contains known string types
try:
# Python 2.6
StringTypes = (types.StringType, types.UnicodeType)
except AttributeError:
# Python 3.0
StringTypes = (str, bytes)
# This regular expression is used to match valid token names
_is_identifier = re.compile(r'^[a-zA-Z0-9_]+$')
# Exception thrown when invalid token encountered and no default error
# handler is defined.
class LexError(Exception):
def __init__(self, message, s):
self.args = (message,)
self.text = s
# Token class. This class is used to represent the tokens produced.
class LexToken(object):
def __str__(self):
return 'LexToken(%s,%r,%d,%d)' % (self.type, self.value, self.lineno, self.lexpos)
def __repr__(self):
return str(self)
# This object is a stand-in for a logging object created by the
# logging module.
class PlyLogger(object):
def __init__(self, f):
self.f = f
def critical(self, msg, *args, **kwargs):
self.f.write((msg % args) + '\n')
def warning(self, msg, *args, **kwargs):
self.f.write('WARNING: ' + (msg % args) + '\n')
def error(self, msg, *args, **kwargs):
self.f.write('ERROR: ' + (msg % args) + '\n')
info = critical
debug = critical
# Null logger is used when no output is generated. Does nothing.
class NullLogger(object):
def __getattribute__(self, name):
return self
def __call__(self, *args, **kwargs):
return self
# -----------------------------------------------------------------------------
# === Lexing Engine ===
#
# The following Lexer class implements the lexer runtime. There are only
# a few public methods and attributes:
#
# input() - Store a new string in the lexer
# token() - Get the next token
# clone() - Clone the lexer
#
# lineno - Current line number
# lexpos - Current position in the input string
# -----------------------------------------------------------------------------
class Lexer:
def __init__(self):
self.lexre = None # Master regular expression. This is a list of
# tuples (re, findex) where re is a compiled
# regular expression and findex is a list
# mapping regex group numbers to rules
self.lexretext = None # Current regular expression strings
self.lexstatere = {} # Dictionary mapping lexer states to master regexs
self.lexstateretext = {} # Dictionary mapping lexer states to regex strings
self.lexstaterenames = {} # Dictionary mapping lexer states to symbol names
self.lexstate = 'INITIAL' # Current lexer state
self.lexstatestack = [] # Stack of lexer states
self.lexstateinfo = None # State information
self.lexstateignore = {} # Dictionary of ignored characters for each state
self.lexstateerrorf = {} # Dictionary of error functions for each state
self.lexstateeoff = {} # Dictionary of eof functions for each state
self.lexreflags = 0 # Optional re compile flags
self.lexdata = None # Actual input data (as a string)
self.lexpos = 0 # Current position in input text
self.lexlen = 0 # Length of the input text
self.lexerrorf = None # Error rule (if any)
self.lexeoff = None # EOF rule (if any)
self.lextokens = None # List of valid tokens
self.lexignore = '' # Ignored characters
self.lexliterals = '' # Literal characters that can be passed through
self.lexmodule = None # Module
self.lineno = 1 # Current line number
self.lexoptimize = False # Optimized mode
def clone(self, object=None):
c = copy.copy(self)
# If the object parameter has been supplied, it means we are attaching the
# lexer to a new object. In this case, we have to rebind all methods in
# the lexstatere and lexstateerrorf tables.
if object:
newtab = {}
for key, ritem in self.lexstatere.items():
newre = []
for cre, findex in ritem:
newfindex = []
for f in findex:
if not f or not f[0]:
newfindex.append(f)
continue
newfindex.append((getattr(object, f[0].__name__), f[1]))
newre.append((cre, newfindex))
newtab[key] = newre
c.lexstatere = newtab
c.lexstateerrorf = {}
for key, ef in self.lexstateerrorf.items():
c.lexstateerrorf[key] = getattr(object, ef.__name__)
c.lexmodule = object
return c
# ------------------------------------------------------------
# writetab() - Write lexer information to a table file
# ------------------------------------------------------------
def writetab(self, lextab, outputdir=''):
if isinstance(lextab, types.ModuleType):
raise IOError("Won't overwrite existing lextab module")
basetabmodule = lextab.split('.')[-1]
filename = os.path.join(outputdir, basetabmodule) + '.py'
with open(filename, 'w') as tf:
tf.write('# %s.py. This file automatically created by PLY (version %s). Don\'t edit!\n' % (basetabmodule, __version__))
tf.write('_tabversion = %s\n' % repr(__tabversion__))
tf.write('_lextokens = set(%s)\n' % repr(tuple(self.lextokens)))
tf.write('_lexreflags = %s\n' % repr(self.lexreflags))
tf.write('_lexliterals = %s\n' % repr(self.lexliterals))
tf.write('_lexstateinfo = %s\n' % repr(self.lexstateinfo))
# Rewrite the lexstatere table, replacing function objects with function names
tabre = {}
for statename, lre in self.lexstatere.items():
titem = []
for (pat, func), retext, renames in zip(lre, self.lexstateretext[statename], self.lexstaterenames[statename]):
titem.append((retext, _funcs_to_names(func, renames)))
tabre[statename] = titem
tf.write('_lexstatere = %s\n' % repr(tabre))
tf.write('_lexstateignore = %s\n' % repr(self.lexstateignore))
taberr = {}
for statename, ef in self.lexstateerrorf.items():
taberr[statename] = ef.__name__ if ef else None
tf.write('_lexstateerrorf = %s\n' % repr(taberr))
tabeof = {}
for statename, ef in self.lexstateeoff.items():
tabeof[statename] = ef.__name__ if ef else None
tf.write('_lexstateeoff = %s\n' % repr(tabeof))
# ------------------------------------------------------------
# readtab() - Read lexer information from a tab file
# ------------------------------------------------------------
def readtab(self, tabfile, fdict):
if isinstance(tabfile, types.ModuleType):
lextab = tabfile
else:
exec('import %s' % tabfile)
lextab = sys.modules[tabfile]
if getattr(lextab, '_tabversion', '0.0') != __tabversion__:
raise ImportError('Inconsistent PLY version')
self.lextokens = lextab._lextokens
self.lexreflags = lextab._lexreflags
self.lexliterals = lextab._lexliterals
self.lextokens_all = self.lextokens | set(self.lexliterals)
self.lexstateinfo = lextab._lexstateinfo
self.lexstateignore = lextab._lexstateignore
self.lexstatere = {}
self.lexstateretext = {}
for statename, lre in lextab._lexstatere.items():
titem = []
txtitem = []
for pat, func_name in lre:
titem.append((re.compile(pat, lextab._lexreflags), _names_to_funcs(func_name, fdict)))
self.lexstatere[statename] = titem
self.lexstateretext[statename] = txtitem
self.lexstateerrorf = {}
for statename, ef in lextab._lexstateerrorf.items():
self.lexstateerrorf[statename] = fdict[ef]
self.lexstateeoff = {}
for statename, ef in lextab._lexstateeoff.items():
self.lexstateeoff[statename] = fdict[ef]
self.begin('INITIAL')
# ------------------------------------------------------------
# input() - Push a new string into the lexer
# ------------------------------------------------------------
def input(self, s):
# Pull off the first character to see if s looks like a string
c = s[:1]
if not isinstance(c, StringTypes):
raise ValueError('Expected a string')
self.lexdata = s
self.lexpos = 0
self.lexlen = len(s)
# ------------------------------------------------------------
# begin() - Changes the lexing state
# ------------------------------------------------------------
def begin(self, state):
if state not in self.lexstatere:
raise ValueError('Undefined state')
self.lexre = self.lexstatere[state]
self.lexretext = self.lexstateretext[state]
self.lexignore = self.lexstateignore.get(state, '')
self.lexerrorf = self.lexstateerrorf.get(state, None)
self.lexeoff = self.lexstateeoff.get(state, None)
self.lexstate = state
# ------------------------------------------------------------
# push_state() - Changes the lexing state and saves old on stack
# ------------------------------------------------------------
def push_state(self, state):
self.lexstatestack.append(self.lexstate)
self.begin(state)
# ------------------------------------------------------------
# pop_state() - Restores the previous state
# ------------------------------------------------------------
def pop_state(self):
self.begin(self.lexstatestack.pop())
# ------------------------------------------------------------
# current_state() - Returns the current lexing state
# ------------------------------------------------------------
def current_state(self):
return self.lexstate
# ------------------------------------------------------------
# skip() - Skip ahead n characters
# ------------------------------------------------------------
def skip(self, n):
self.lexpos += n
# ------------------------------------------------------------
# opttoken() - Return the next token from the Lexer
#
# Note: This function has been carefully implemented to be as fast
# as possible. Don't make changes unless you really know what
# you are doing
# ------------------------------------------------------------
def token(self):
# Make local copies of frequently referenced attributes
lexpos = self.lexpos
lexlen = self.lexlen
lexignore = self.lexignore
lexdata = self.lexdata
while lexpos < lexlen:
# This code provides some short-circuit code for whitespace, tabs, and other ignored characters
if lexdata[lexpos] in lexignore:
lexpos += 1
continue
# Look for a regular expression match
for lexre, lexindexfunc in self.lexre:
m = lexre.match(lexdata, lexpos)
if not m:
continue
# Create a token for return
tok = LexToken()
tok.value = m.group()
tok.lineno = self.lineno
tok.lexpos = lexpos
i = m.lastindex
func, tok.type = lexindexfunc[i]
if not func:
# If no token type was set, it's an ignored token
if tok.type:
self.lexpos = m.end()
return tok
else:
lexpos = m.end()
break
lexpos = m.end()
# If token is processed by a function, call it
tok.lexer = self # Set additional attributes useful in token rules
self.lexmatch = m
self.lexpos = lexpos
newtok = func(tok)
# Every function must return a token, if nothing, we just move to next token
if not newtok:
lexpos = self.lexpos # This is here in case user has updated lexpos.
lexignore = self.lexignore # This is here in case there was a state change
break
# Verify type of the token. If not in the token map, raise an error
if not self.lexoptimize:
if newtok.type not in self.lextokens_all:
raise LexError("%s:%d: Rule '%s' returned an unknown token type '%s'" % (
func.__code__.co_filename, func.__code__.co_firstlineno,
func.__name__, newtok.type), lexdata[lexpos:])
return newtok
else:
# No match, see if in literals
if lexdata[lexpos] in self.lexliterals:
tok = LexToken()
tok.value = lexdata[lexpos]
tok.lineno = self.lineno
tok.type = tok.value
tok.lexpos = lexpos
self.lexpos = lexpos + 1
return tok
# No match. Call t_error() if defined.
if self.lexerrorf:
tok = LexToken()
tok.value = self.lexdata[lexpos:]
tok.lineno = self.lineno
tok.type = 'error'
tok.lexer = self
tok.lexpos = lexpos
self.lexpos = lexpos
newtok = self.lexerrorf(tok)
if lexpos == self.lexpos:
# Error method didn't change text position at all. This is an error.
raise LexError("Scanning error. Illegal character '%s'" % (lexdata[lexpos]), lexdata[lexpos:])
lexpos = self.lexpos
if not newtok:
continue
return newtok
self.lexpos = lexpos
raise LexError("Illegal character '%s' at index %d" % (lexdata[lexpos], lexpos), lexdata[lexpos:])
if self.lexeoff:
tok = LexToken()
tok.type = 'eof'
tok.value = ''
tok.lineno = self.lineno
tok.lexpos = lexpos
tok.lexer = self
self.lexpos = lexpos
newtok = self.lexeoff(tok)
return newtok
self.lexpos = lexpos + 1
if self.lexdata is None:
raise RuntimeError('No input string given with input()')
return None
# Iterator interface
def __iter__(self):
return self
def next(self):
t = self.token()
if t is None:
raise StopIteration
return t
__next__ = next
# -----------------------------------------------------------------------------
# ==== Lex Builder ===
#
# The functions and classes below are used to collect lexing information
# and build a Lexer object from it.
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
# _get_regex(func)
#
# Returns the regular expression assigned to a function either as a doc string
# or as a .regex attribute attached by the @TOKEN decorator.
# -----------------------------------------------------------------------------
def _get_regex(func):
return getattr(func, 'regex', func.__doc__)
# -----------------------------------------------------------------------------
# get_caller_module_dict()
#
# This function returns a dictionary containing all of the symbols defined within
# a caller further down the call stack. This is used to get the environment
# associated with the yacc() call if none was provided.
# -----------------------------------------------------------------------------
def get_caller_module_dict(levels):
f = sys._getframe(levels)
ldict = f.f_globals.copy()
if f.f_globals != f.f_locals:
ldict.update(f.f_locals)
return ldict
# -----------------------------------------------------------------------------
# _funcs_to_names()
#
# Given a list of regular expression functions, this converts it to a list
# suitable for output to a table file
# -----------------------------------------------------------------------------
def _funcs_to_names(funclist, namelist):
result = []
for f, name in zip(funclist, namelist):
if f and f[0]:
result.append((name, f[1]))
else:
result.append(f)
return result
# -----------------------------------------------------------------------------
# _names_to_funcs()
#
# Given a list of regular expression function names, this converts it back to
# functions.
# -----------------------------------------------------------------------------
def _names_to_funcs(namelist, fdict):
result = []
for n in namelist:
if n and n[0]:
result.append((fdict[n[0]], n[1]))
else:
result.append(n)
return result
# -----------------------------------------------------------------------------
# _form_master_re()
#
# This function takes a list of all of the regex components and attempts to
# form the master regular expression. Given limitations in the Python re
# module, it may be necessary to break the master regex into separate expressions.
# -----------------------------------------------------------------------------
def _form_master_re(relist, reflags, ldict, toknames):
if not relist:
return []
regex = '|'.join(relist)
try:
lexre = re.compile(regex, reflags)
# Build the index to function map for the matching engine
lexindexfunc = [None] * (max(lexre.groupindex.values()) + 1)
lexindexnames = lexindexfunc[:]
for f, i in lexre.groupindex.items():
handle = ldict.get(f, None)
if type(handle) in (types.FunctionType, types.MethodType):
lexindexfunc[i] = (handle, toknames[f])
lexindexnames[i] = f
elif handle is not None:
lexindexnames[i] = f
if f.find('ignore_') > 0:
lexindexfunc[i] = (None, None)
else:
lexindexfunc[i] = (None, toknames[f])
return [(lexre, lexindexfunc)], [regex], [lexindexnames]
except Exception:
m = int(len(relist)/2)
if m == 0:
m = 1
llist, lre, lnames = _form_master_re(relist[:m], reflags, ldict, toknames)
rlist, rre, rnames = _form_master_re(relist[m:], reflags, ldict, toknames)
return (llist+rlist), (lre+rre), (lnames+rnames)
# -----------------------------------------------------------------------------
# def _statetoken(s,names)
#
# Given a declaration name s of the form "t_" and a dictionary whose keys are
# state names, this function returns a tuple (states,tokenname) where states
# is a tuple of state names and tokenname is the name of the token. For example,
# calling this with s = "t_foo_bar_SPAM" might return (('foo','bar'),'SPAM')
# -----------------------------------------------------------------------------
def _statetoken(s, names):
nonstate = 1
parts = s.split('_')
for i, part in enumerate(parts[1:], 1):
if part not in names and part != 'ANY':
break
if i > 1:
states = tuple(parts[1:i])
else:
states = ('INITIAL',)
if 'ANY' in states:
states = tuple(names)
tokenname = '_'.join(parts[i:])
return (states, tokenname)
# -----------------------------------------------------------------------------
# LexerReflect()
#
# This class represents information needed to build a lexer as extracted from a
# user's input file.
# -----------------------------------------------------------------------------
class LexerReflect(object):
def __init__(self, ldict, log=None, reflags=0):
self.ldict = ldict
self.error_func = None
self.tokens = []
self.reflags = reflags
self.stateinfo = {'INITIAL': 'inclusive'}
self.modules = set()
self.error = False
self.log = PlyLogger(sys.stderr) if log is None else log
# Get all of the basic information
def get_all(self):
self.get_tokens()
self.get_literals()
self.get_states()
self.get_rules()
# Validate all of the information
def validate_all(self):
self.validate_tokens()
self.validate_literals()
self.validate_rules()
return self.error
# Get the tokens map
def get_tokens(self):
tokens = self.ldict.get('tokens', None)
if not tokens:
self.log.error('No token list is defined')
self.error = True
return
if not isinstance(tokens, (list, tuple)):
self.log.error('tokens must be a list or tuple')
self.error = True
return
if not tokens:
self.log.error('tokens is empty')
self.error = True
return
self.tokens = tokens
# Validate the tokens
def validate_tokens(self):
terminals = {}
for n in self.tokens:
if not _is_identifier.match(n):
self.log.error("Bad token name '%s'", n)
self.error = True
if n in terminals:
self.log.warning("Token '%s' multiply defined", n)
terminals[n] = 1
# Get the literals specifier
def get_literals(self):
self.literals = self.ldict.get('literals', '')
if not self.literals:
self.literals = ''
# Validate literals
def validate_literals(self):
try:
for c in self.literals:
if not isinstance(c, StringTypes) or len(c) > 1:
self.log.error('Invalid literal %s. Must be a single character', repr(c))
self.error = True
except TypeError:
self.log.error('Invalid literals specification. literals must be a sequence of characters')
self.error = True
def get_states(self):
self.states = self.ldict.get('states', None)
# Build statemap
if self.states:
if not isinstance(self.states, (tuple, list)):
self.log.error('states must be defined as a tuple or list')
self.error = True
else:
for s in self.states:
if not isinstance(s, tuple) or len(s) != 2:
self.log.error("Invalid state specifier %s. Must be a tuple (statename,'exclusive|inclusive')", repr(s))
self.error = True
continue
name, statetype = s
if not isinstance(name, StringTypes):
self.log.error('State name %s must be a string', repr(name))
self.error = True
continue
if not (statetype == 'inclusive' or statetype == 'exclusive'):
self.log.error("State type for state %s must be 'inclusive' or 'exclusive'", name)
self.error = True
continue
if name in self.stateinfo:
self.log.error("State '%s' already defined", name)
self.error = True
continue
self.stateinfo[name] = statetype
# Get all of the symbols with a t_ prefix and sort them into various
# categories (functions, strings, error functions, and ignore characters)
def get_rules(self):
tsymbols = [f for f in self.ldict if f[:2] == 't_']
# Now build up a list of functions and a list of strings
self.toknames = {} # Mapping of symbols to token names
self.funcsym = {} # Symbols defined as functions
self.strsym = {} # Symbols defined as strings
self.ignore = {} # Ignore strings by state
self.errorf = {} # Error functions by state
self.eoff = {} # EOF functions by state
for s in self.stateinfo:
self.funcsym[s] = []
self.strsym[s] = []
if len(tsymbols) == 0:
self.log.error('No rules of the form t_rulename are defined')
self.error = True
return
for f in tsymbols:
t = self.ldict[f]
states, tokname = _statetoken(f, self.stateinfo)
self.toknames[f] = tokname
if hasattr(t, '__call__'):
if tokname == 'error':
for s in states:
self.errorf[s] = t
elif tokname == 'eof':
for s in states:
self.eoff[s] = t
elif tokname == 'ignore':
line = t.__code__.co_firstlineno
file = t.__code__.co_filename
self.log.error("%s:%d: Rule '%s' must be defined as a string", file, line, t.__name__)
self.error = True
else:
for s in states:
self.funcsym[s].append((f, t))
elif isinstance(t, StringTypes):
if tokname == 'ignore':
for s in states:
self.ignore[s] = t
if '\\' in t:
self.log.warning("%s contains a literal backslash '\\'", f)
elif tokname == 'error':
self.log.error("Rule '%s' must be defined as a function", f)
self.error = True
else:
for s in states:
self.strsym[s].append((f, t))
else:
self.log.error('%s not defined as a function or string', f)
self.error = True
# Sort the functions by line number
for f in self.funcsym.values():
f.sort(key=lambda x: x[1].__code__.co_firstlineno)
# Sort the strings by regular expression length
for s in self.strsym.values():
s.sort(key=lambda x: len(x[1]), reverse=True)
# Validate all of the t_rules collected
def validate_rules(self):
for state in self.stateinfo:
# Validate all rules defined by functions
for fname, f in self.funcsym[state]:
line = f.__code__.co_firstlineno
file = f.__code__.co_filename
module = inspect.getmodule(f)
self.modules.add(module)
tokname = self.toknames[fname]
if isinstance(f, types.MethodType):
reqargs = 2
else:
reqargs = 1
nargs = f.__code__.co_argcount
if nargs > reqargs:
self.log.error("%s:%d: Rule '%s' has too many arguments", file, line, f.__name__)
self.error = True
continue
if nargs < reqargs:
self.log.error("%s:%d: Rule '%s' requires an argument", file, line, f.__name__)
self.error = True
continue
if not _get_regex(f):
self.log.error("%s:%d: No regular expression defined for rule '%s'", file, line, f.__name__)
self.error = True
continue
try:
c = re.compile('(?P<%s>%s)' % (fname, _get_regex(f)), self.reflags)
if c.match(''):
self.log.error("%s:%d: Regular expression for rule '%s' matches empty string", file, line, f.__name__)
self.error = True
except re.error as e:
self.log.error("%s:%d: Invalid regular expression for rule '%s'. %s", file, line, f.__name__, e)
if '#' in _get_regex(f):
self.log.error("%s:%d. Make sure '#' in rule '%s' is escaped with '\\#'", file, line, f.__name__)
self.error = True
# Validate all rules defined by strings
for name, r in self.strsym[state]:
tokname = self.toknames[name]
if tokname == 'error':
self.log.error("Rule '%s' must be defined as a function", name)
self.error = True
continue
if tokname not in self.tokens and tokname.find('ignore_') < 0:
self.log.error("Rule '%s' defined for an unspecified token %s", name, tokname)
self.error = True
continue
try:
c = re.compile('(?P<%s>%s)' % (name, r), self.reflags)
if (c.match('')):
self.log.error("Regular expression for rule '%s' matches empty string", name)
self.error = True
except re.error as e:
self.log.error("Invalid regular expression for rule '%s'. %s", name, e)
if '#' in r:
self.log.error("Make sure '#' in rule '%s' is escaped with '\\#'", name)
self.error = True
if not self.funcsym[state] and not self.strsym[state]:
self.log.error("No rules defined for state '%s'", state)
self.error = True
# Validate the error function
efunc = self.errorf.get(state, None)
if efunc:
f = efunc
line = f.__code__.co_firstlineno
file = f.__code__.co_filename
module = inspect.getmodule(f)
self.modules.add(module)
if isinstance(f, types.MethodType):
reqargs = 2
else:
reqargs = 1
nargs = f.__code__.co_argcount
if nargs > reqargs:
self.log.error("%s:%d: Rule '%s' has too many arguments", file, line, f.__name__)
self.error = True
if nargs < reqargs:
self.log.error("%s:%d: Rule '%s' requires an argument", file, line, f.__name__)
self.error = True
for module in self.modules:
self.validate_module(module)
# -----------------------------------------------------------------------------
# validate_module()
#
# This checks to see if there are duplicated t_rulename() functions or strings
# in the parser input file. This is done using a simple regular expression
# match on each line in the source code of the given module.
# -----------------------------------------------------------------------------
def validate_module(self, module):
try:
lines, linen = inspect.getsourcelines(module)
except IOError:
return
fre = re.compile(r'\s*def\s+(t_[a-zA-Z_0-9]*)\(')
sre = re.compile(r'\s*(t_[a-zA-Z_0-9]*)\s*=')
counthash = {}
linen += 1
for line in lines:
m = fre.match(line)
if not m:
m = sre.match(line)
if m:
name = m.group(1)
prev = counthash.get(name)
if not prev:
counthash[name] = linen
else:
filename = inspect.getsourcefile(module)
self.log.error('%s:%d: Rule %s redefined. Previously defined on line %d', filename, linen, name, prev)
self.error = True
linen += 1
# -----------------------------------------------------------------------------
# lex(module)
#
# Build all of the regular expression rules from definitions in the supplied module
# -----------------------------------------------------------------------------
def lex(module=None, object=None, debug=False, optimize=False, lextab='lextab',
reflags=int(re.VERBOSE), nowarn=False, outputdir=None, debuglog=None, errorlog=None):
if lextab is None:
lextab = 'lextab'
global lexer
ldict = None
stateinfo = {'INITIAL': 'inclusive'}
lexobj = Lexer()
lexobj.lexoptimize = optimize
global token, input
if errorlog is None:
errorlog = PlyLogger(sys.stderr)
if debug:
if debuglog is None:
debuglog = PlyLogger(sys.stderr)
# Get the module dictionary used for the lexer
if object:
module = object
# Get the module dictionary used for the parser
if module:
_items = [(k, getattr(module, k)) for k in dir(module)]
ldict = dict(_items)
# If no __file__ attribute is available, try to obtain it from the __module__ instead
if '__file__' not in ldict:
ldict['__file__'] = sys.modules[ldict['__module__']].__file__
else:
ldict = get_caller_module_dict(2)
# Determine if the module is package of a package or not.
# If so, fix the tabmodule setting so that tables load correctly
pkg = ldict.get('__package__')
if pkg and isinstance(lextab, str):
if '.' not in lextab:
lextab = pkg + '.' + lextab
# Collect parser information from the dictionary
linfo = LexerReflect(ldict, log=errorlog, reflags=reflags)
linfo.get_all()
if not optimize:
if linfo.validate_all():
raise SyntaxError("Can't build lexer")
if optimize and lextab:
try:
lexobj.readtab(lextab, ldict)
token = lexobj.token
input = lexobj.input
lexer = lexobj
return lexobj
except ImportError:
pass
# Dump some basic debugging information
if debug:
debuglog.info('lex: tokens = %r', linfo.tokens)
debuglog.info('lex: literals = %r', linfo.literals)
debuglog.info('lex: states = %r', linfo.stateinfo)
# Build a dictionary of valid token names
lexobj.lextokens = set()
for n in linfo.tokens:
lexobj.lextokens.add(n)
# Get literals specification
if isinstance(linfo.literals, (list, tuple)):
lexobj.lexliterals = type(linfo.literals[0])().join(linfo.literals)
else:
lexobj.lexliterals = linfo.literals
lexobj.lextokens_all = lexobj.lextokens | set(lexobj.lexliterals)
# Get the stateinfo dictionary
stateinfo = linfo.stateinfo
regexs = {}
# Build the master regular expressions
for state in stateinfo:
regex_list = []
# Add rules defined by functions first
for fname, f in linfo.funcsym[state]:
line = f.__code__.co_firstlineno
file = f.__code__.co_filename
regex_list.append('(?P<%s>%s)' % (fname, _get_regex(f)))
if debug:
debuglog.info("lex: Adding rule %s -> '%s' (state '%s')", fname, _get_regex(f), state)
# Now add all of the simple rules
for name, r in linfo.strsym[state]:
regex_list.append('(?P<%s>%s)' % (name, r))
if debug:
debuglog.info("lex: Adding rule %s -> '%s' (state '%s')", name, r, state)
regexs[state] = regex_list
# Build the master regular expressions
if debug:
debuglog.info('lex: ==== MASTER REGEXS FOLLOW ====')
for state in regexs:
lexre, re_text, re_names = _form_master_re(regexs[state], reflags, ldict, linfo.toknames)
lexobj.lexstatere[state] = lexre
lexobj.lexstateretext[state] = re_text
lexobj.lexstaterenames[state] = re_names
if debug:
for i, text in enumerate(re_text):
debuglog.info("lex: state '%s' : regex[%d] = '%s'", state, i, text)
# For inclusive states, we need to add the regular expressions from the INITIAL state
for state, stype in stateinfo.items():
if state != 'INITIAL' and stype == 'inclusive':
lexobj.lexstatere[state].extend(lexobj.lexstatere['INITIAL'])
lexobj.lexstateretext[state].extend(lexobj.lexstateretext['INITIAL'])
lexobj.lexstaterenames[state].extend(lexobj.lexstaterenames['INITIAL'])
lexobj.lexstateinfo = stateinfo
lexobj.lexre = lexobj.lexstatere['INITIAL']
lexobj.lexretext = lexobj.lexstateretext['INITIAL']
lexobj.lexreflags = reflags
# Set up ignore variables
lexobj.lexstateignore = linfo.ignore
lexobj.lexignore = lexobj.lexstateignore.get('INITIAL', '')
# Set up error functions
lexobj.lexstateerrorf = linfo.errorf
lexobj.lexerrorf = linfo.errorf.get('INITIAL', None)
if not lexobj.lexerrorf:
errorlog.warning('No t_error rule is defined')
# Set up eof functions
lexobj.lexstateeoff = linfo.eoff
lexobj.lexeoff = linfo.eoff.get('INITIAL', None)
# Check state information for ignore and error rules
for s, stype in stateinfo.items():
if stype == 'exclusive':
if s not in linfo.errorf:
errorlog.warning("No error rule is defined for exclusive state '%s'", s)
if s not in linfo.ignore and lexobj.lexignore:
errorlog.warning("No ignore rule is defined for exclusive state '%s'", s)
elif stype == 'inclusive':
if s not in linfo.errorf:
linfo.errorf[s] = linfo.errorf.get('INITIAL', None)
if s not in linfo.ignore:
linfo.ignore[s] = linfo.ignore.get('INITIAL', '')
# Create global versions of the token() and input() functions
token = lexobj.token
input = lexobj.input
lexer = lexobj
# If in optimize mode, we write the lextab
if lextab and optimize:
if outputdir is None:
# If no output directory is set, the location of the output files
# is determined according to the following rules:
# - If lextab specifies a package, files go into that package directory
# - Otherwise, files go in the same directory as the specifying module
if isinstance(lextab, types.ModuleType):
srcfile = lextab.__file__
else:
if '.' not in lextab:
srcfile = ldict['__file__']
else:
parts = lextab.split('.')
pkgname = '.'.join(parts[:-1])
exec('import %s' % pkgname)
srcfile = getattr(sys.modules[pkgname], '__file__', '')
outputdir = os.path.dirname(srcfile)
try:
lexobj.writetab(lextab, outputdir)
except IOError as e:
errorlog.warning("Couldn't write lextab module %r. %s" % (lextab, e))
return lexobj
# -----------------------------------------------------------------------------
# runmain()
#
# This runs the lexer as a main program
# -----------------------------------------------------------------------------
def runmain(lexer=None, data=None):
if not data:
try:
filename = sys.argv[1]
f = open(filename)
data = f.read()
f.close()
except IndexError:
sys.stdout.write('Reading from standard input (type EOF to end):\n')
data = sys.stdin.read()
if lexer:
_input = lexer.input
else:
_input = input
_input(data)
if lexer:
_token = lexer.token
else:
_token = token
while True:
tok = _token()
if not tok:
break
sys.stdout.write('(%s,%r,%d,%d)\n' % (tok.type, tok.value, tok.lineno, tok.lexpos))
# -----------------------------------------------------------------------------
# @TOKEN(regex)
#
# This decorator function can be used to set the regex expression on a function
# when its docstring might need to be set in an alternative way
# -----------------------------------------------------------------------------
def TOKEN(r):
def set_regex(f):
if hasattr(r, '__call__'):
f.regex = _get_regex(r)
else:
f.regex = r
return f
return set_regex
# Alternative spelling of the TOKEN decorator
Token = TOKEN
| 42,918 | Python | 38.017273 | 131 | 0.507386 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/sniffio/_version.py | # This file is imported from __init__.py and exec'd from setup.py
__version__ = "1.3.0"
| 89 | Python | 21.499995 | 65 | 0.640449 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/sniffio/_impl.py | from contextvars import ContextVar
from typing import Optional
import sys
import threading
current_async_library_cvar = ContextVar(
"current_async_library_cvar", default=None
) # type: ContextVar[Optional[str]]
class _ThreadLocal(threading.local):
# Since threading.local provides no explicit mechanism is for setting
# a default for a value, a custom class with a class attribute is used
# instead.
name = None # type: Optional[str]
thread_local = _ThreadLocal()
class AsyncLibraryNotFoundError(RuntimeError):
pass
def current_async_library() -> str:
"""Detect which async library is currently running.
The following libraries are currently supported:
================ =========== ============================
Library Requires Magic string
================ =========== ============================
**Trio** Trio v0.6+ ``"trio"``
**Curio** - ``"curio"``
**asyncio** ``"asyncio"``
**Trio-asyncio** v0.8.2+ ``"trio"`` or ``"asyncio"``,
depending on current mode
================ =========== ============================
Returns:
A string like ``"trio"``.
Raises:
AsyncLibraryNotFoundError: if called from synchronous context,
or if the current async library was not recognized.
Examples:
.. code-block:: python3
from sniffio import current_async_library
async def generic_sleep(seconds):
library = current_async_library()
if library == "trio":
import trio
await trio.sleep(seconds)
elif library == "asyncio":
import asyncio
await asyncio.sleep(seconds)
# ... and so on ...
else:
raise RuntimeError(f"Unsupported library {library!r}")
"""
value = thread_local.name
if value is not None:
return value
value = current_async_library_cvar.get()
if value is not None:
return value
# Need to sniff for asyncio
if "asyncio" in sys.modules:
import asyncio
try:
current_task = asyncio.current_task # type: ignore[attr-defined]
except AttributeError:
current_task = asyncio.Task.current_task # type: ignore[attr-defined]
try:
if current_task() is not None:
return "asyncio"
except RuntimeError:
pass
# Sniff for curio (for now)
if 'curio' in sys.modules:
from curio.meta import curio_running
if curio_running():
return 'curio'
raise AsyncLibraryNotFoundError(
"unknown async library, or not in async context"
)
| 2,843 | Python | 28.625 | 82 | 0.539923 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/sniffio/__init__.py | """Top-level package for sniffio."""
__all__ = [
"current_async_library", "AsyncLibraryNotFoundError",
"current_async_library_cvar"
]
from ._version import __version__
from ._impl import (
current_async_library,
AsyncLibraryNotFoundError,
current_async_library_cvar,
thread_local,
)
| 310 | Python | 18.437499 | 57 | 0.680645 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/sniffio/_tests/test_sniffio.py | import os
import sys
import pytest
from .. import (
current_async_library, AsyncLibraryNotFoundError,
current_async_library_cvar, thread_local
)
def test_basics_cvar():
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
token = current_async_library_cvar.set("generic-lib")
try:
assert current_async_library() == "generic-lib"
finally:
current_async_library_cvar.reset(token)
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
def test_basics_tlocal():
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
old_name, thread_local.name = thread_local.name, "generic-lib"
try:
assert current_async_library() == "generic-lib"
finally:
thread_local.name = old_name
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
def test_asyncio():
import asyncio
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
ran = []
async def this_is_asyncio():
assert current_async_library() == "asyncio"
# Call it a second time to exercise the caching logic
assert current_async_library() == "asyncio"
ran.append(True)
asyncio.run(this_is_asyncio())
assert ran == [True]
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
# https://github.com/dabeaz/curio/pull/354
@pytest.mark.skipif(
os.name == "nt" and sys.version_info >= (3, 9),
reason="Curio breaks on Python 3.9+ on Windows. Fix was not released yet",
)
def test_curio():
import curio
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
ran = []
async def this_is_curio():
assert current_async_library() == "curio"
# Call it a second time to exercise the caching logic
assert current_async_library() == "curio"
ran.append(True)
curio.run(this_is_curio)
assert ran == [True]
with pytest.raises(AsyncLibraryNotFoundError):
current_async_library()
| 2,110 | Python | 23.835294 | 78 | 0.661137 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pyrsistent/_pclass.py | from pyrsistent._checked_types import (InvariantException, CheckedType, _restore_pickle, store_invariants)
from pyrsistent._field_common import (
set_fields, check_type, is_field_ignore_extra_complaint, PFIELD_NO_INITIAL, serialize, check_global_invariants
)
from pyrsistent._transformations import transform
def _is_pclass(bases):
return len(bases) == 1 and bases[0] == CheckedType
class PClassMeta(type):
def __new__(mcs, name, bases, dct):
set_fields(dct, bases, name='_pclass_fields')
store_invariants(dct, bases, '_pclass_invariants', '__invariant__')
dct['__slots__'] = ('_pclass_frozen',) + tuple(key for key in dct['_pclass_fields'])
# There must only be one __weakref__ entry in the inheritance hierarchy,
# lets put it on the top level class.
if _is_pclass(bases):
dct['__slots__'] += ('__weakref__',)
return super(PClassMeta, mcs).__new__(mcs, name, bases, dct)
_MISSING_VALUE = object()
def _check_and_set_attr(cls, field, name, value, result, invariant_errors):
check_type(cls, field, name, value)
is_ok, error_code = field.invariant(value)
if not is_ok:
invariant_errors.append(error_code)
else:
setattr(result, name, value)
class PClass(CheckedType, metaclass=PClassMeta):
"""
A PClass is a python class with a fixed set of specified fields. PClasses are declared as python classes inheriting
from PClass. It is defined the same way that PRecords are and behaves like a PRecord in all aspects except that it
is not a PMap and hence not a collection but rather a plain Python object.
More documentation and examples of PClass usage is available at https://github.com/tobgu/pyrsistent
"""
def __new__(cls, **kwargs): # Support *args?
result = super(PClass, cls).__new__(cls)
factory_fields = kwargs.pop('_factory_fields', None)
ignore_extra = kwargs.pop('ignore_extra', None)
missing_fields = []
invariant_errors = []
for name, field in cls._pclass_fields.items():
if name in kwargs:
if factory_fields is None or name in factory_fields:
if is_field_ignore_extra_complaint(PClass, field, ignore_extra):
value = field.factory(kwargs[name], ignore_extra=ignore_extra)
else:
value = field.factory(kwargs[name])
else:
value = kwargs[name]
_check_and_set_attr(cls, field, name, value, result, invariant_errors)
del kwargs[name]
elif field.initial is not PFIELD_NO_INITIAL:
initial = field.initial() if callable(field.initial) else field.initial
_check_and_set_attr(
cls, field, name, initial, result, invariant_errors)
elif field.mandatory:
missing_fields.append('{0}.{1}'.format(cls.__name__, name))
if invariant_errors or missing_fields:
raise InvariantException(tuple(invariant_errors), tuple(missing_fields), 'Field invariant failed')
if kwargs:
raise AttributeError("'{0}' are not among the specified fields for {1}".format(
', '.join(kwargs), cls.__name__))
check_global_invariants(result, cls._pclass_invariants)
result._pclass_frozen = True
return result
def set(self, *args, **kwargs):
"""
Set a field in the instance. Returns a new instance with the updated value. The original instance remains
unmodified. Accepts key-value pairs or single string representing the field name and a value.
>>> from pyrsistent import PClass, field
>>> class AClass(PClass):
... x = field()
...
>>> a = AClass(x=1)
>>> a2 = a.set(x=2)
>>> a3 = a.set('x', 3)
>>> a
AClass(x=1)
>>> a2
AClass(x=2)
>>> a3
AClass(x=3)
"""
if args:
kwargs[args[0]] = args[1]
factory_fields = set(kwargs)
for key in self._pclass_fields:
if key not in kwargs:
value = getattr(self, key, _MISSING_VALUE)
if value is not _MISSING_VALUE:
kwargs[key] = value
return self.__class__(_factory_fields=factory_fields, **kwargs)
@classmethod
def create(cls, kwargs, _factory_fields=None, ignore_extra=False):
"""
Factory method. Will create a new PClass of the current type and assign the values
specified in kwargs.
:param ignore_extra: A boolean which when set to True will ignore any keys which appear in kwargs that are not
in the set of fields on the PClass.
"""
if isinstance(kwargs, cls):
return kwargs
if ignore_extra:
kwargs = {k: kwargs[k] for k in cls._pclass_fields if k in kwargs}
return cls(_factory_fields=_factory_fields, ignore_extra=ignore_extra, **kwargs)
def serialize(self, format=None):
"""
Serialize the current PClass using custom serializer functions for fields where
such have been supplied.
"""
result = {}
for name in self._pclass_fields:
value = getattr(self, name, _MISSING_VALUE)
if value is not _MISSING_VALUE:
result[name] = serialize(self._pclass_fields[name].serializer, format, value)
return result
def transform(self, *transformations):
"""
Apply transformations to the currency PClass. For more details on transformations see
the documentation for PMap. Transformations on PClasses do not support key matching
since the PClass is not a collection. Apart from that the transformations available
for other persistent types work as expected.
"""
return transform(self, transformations)
def __eq__(self, other):
if isinstance(other, self.__class__):
for name in self._pclass_fields:
if getattr(self, name, _MISSING_VALUE) != getattr(other, name, _MISSING_VALUE):
return False
return True
return NotImplemented
def __ne__(self, other):
return not self == other
def __hash__(self):
# May want to optimize this by caching the hash somehow
return hash(tuple((key, getattr(self, key, _MISSING_VALUE)) for key in self._pclass_fields))
def __setattr__(self, key, value):
if getattr(self, '_pclass_frozen', False):
raise AttributeError("Can't set attribute, key={0}, value={1}".format(key, value))
super(PClass, self).__setattr__(key, value)
def __delattr__(self, key):
raise AttributeError("Can't delete attribute, key={0}, use remove()".format(key))
def _to_dict(self):
result = {}
for key in self._pclass_fields:
value = getattr(self, key, _MISSING_VALUE)
if value is not _MISSING_VALUE:
result[key] = value
return result
def __repr__(self):
return "{0}({1})".format(self.__class__.__name__,
', '.join('{0}={1}'.format(k, repr(v)) for k, v in self._to_dict().items()))
def __reduce__(self):
# Pickling support
data = dict((key, getattr(self, key)) for key in self._pclass_fields if hasattr(self, key))
return _restore_pickle, (self.__class__, data,)
def evolver(self):
"""
Returns an evolver for this object.
"""
return _PClassEvolver(self, self._to_dict())
def remove(self, name):
"""
Remove attribute given by name from the current instance. Raises AttributeError if the
attribute doesn't exist.
"""
evolver = self.evolver()
del evolver[name]
return evolver.persistent()
class _PClassEvolver(object):
__slots__ = ('_pclass_evolver_original', '_pclass_evolver_data', '_pclass_evolver_data_is_dirty', '_factory_fields')
def __init__(self, original, initial_dict):
self._pclass_evolver_original = original
self._pclass_evolver_data = initial_dict
self._pclass_evolver_data_is_dirty = False
self._factory_fields = set()
def __getitem__(self, item):
return self._pclass_evolver_data[item]
def set(self, key, value):
if self._pclass_evolver_data.get(key, _MISSING_VALUE) is not value:
self._pclass_evolver_data[key] = value
self._factory_fields.add(key)
self._pclass_evolver_data_is_dirty = True
return self
def __setitem__(self, key, value):
self.set(key, value)
def remove(self, item):
if item in self._pclass_evolver_data:
del self._pclass_evolver_data[item]
self._factory_fields.discard(item)
self._pclass_evolver_data_is_dirty = True
return self
raise AttributeError(item)
def __delitem__(self, item):
self.remove(item)
def persistent(self):
if self._pclass_evolver_data_is_dirty:
return self._pclass_evolver_original.__class__(_factory_fields=self._factory_fields,
**self._pclass_evolver_data)
return self._pclass_evolver_original
def __setattr__(self, key, value):
if key not in self.__slots__:
self.set(key, value)
else:
super(_PClassEvolver, self).__setattr__(key, value)
def __getattr__(self, item):
return self[item]
| 9,702 | Python | 35.893536 | 120 | 0.591012 |
omniverse-code/kit/exts/omni.kit.pip_archive/pip_prebundle/pyrsistent/_immutable.py | import sys
def immutable(members='', name='Immutable', verbose=False):
"""
Produces a class that either can be used standalone or as a base class for persistent classes.
This is a thin wrapper around a named tuple.
Constructing a type and using it to instantiate objects:
>>> Point = immutable('x, y', name='Point')
>>> p = Point(1, 2)
>>> p2 = p.set(x=3)
>>> p
Point(x=1, y=2)
>>> p2
Point(x=3, y=2)
Inheriting from a constructed type. In this case no type name needs to be supplied:
>>> class PositivePoint(immutable('x, y')):
... __slots__ = tuple()
... def __new__(cls, x, y):
... if x > 0 and y > 0:
... return super(PositivePoint, cls).__new__(cls, x, y)
... raise Exception('Coordinates must be positive!')
...
>>> p = PositivePoint(1, 2)
>>> p.set(x=3)
PositivePoint(x=3, y=2)
>>> p.set(y=-3)
Traceback (most recent call last):
Exception: Coordinates must be positive!
The persistent class also supports the notion of frozen members. The value of a frozen member
cannot be updated. For example it could be used to implement an ID that should remain the same
over time. A frozen member is denoted by a trailing underscore.
>>> Point = immutable('x, y, id_', name='Point')
>>> p = Point(1, 2, id_=17)
>>> p.set(x=3)
Point(x=3, y=2, id_=17)
>>> p.set(id_=18)
Traceback (most recent call last):
AttributeError: Cannot set frozen members id_
"""
if isinstance(members, str):
members = members.replace(',', ' ').split()
def frozen_member_test():
frozen_members = ["'%s'" % f for f in members if f.endswith('_')]
if frozen_members:
return """
frozen_fields = fields_to_modify & set([{frozen_members}])
if frozen_fields:
raise AttributeError('Cannot set frozen members %s' % ', '.join(frozen_fields))
""".format(frozen_members=', '.join(frozen_members))
return ''
quoted_members = ', '.join("'%s'" % m for m in members)
template = """
class {class_name}(namedtuple('ImmutableBase', [{quoted_members}])):
__slots__ = tuple()
def __repr__(self):
return super({class_name}, self).__repr__().replace('ImmutableBase', self.__class__.__name__)
def set(self, **kwargs):
if not kwargs:
return self
fields_to_modify = set(kwargs.keys())
if not fields_to_modify <= {member_set}:
raise AttributeError("'%s' is not a member" % ', '.join(fields_to_modify - {member_set}))
{frozen_member_test}
return self.__class__.__new__(self.__class__, *map(kwargs.pop, [{quoted_members}], self))
""".format(quoted_members=quoted_members,
member_set="set([%s])" % quoted_members if quoted_members else 'set()',
frozen_member_test=frozen_member_test(),
class_name=name)
if verbose:
print(template)
from collections import namedtuple
namespace = dict(namedtuple=namedtuple, __name__='pyrsistent_immutable')
try:
exec(template, namespace)
except SyntaxError as e:
raise SyntaxError(str(e) + ':\n' + template) from e
return namespace[name]
| 3,287 | Python | 32.55102 | 101 | 0.585336 |
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