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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseAttributes = parseAttributes;
const espree_1 = require("./espree");
const RE_IS_SPACE = /^\s$/u;
class State {
constructor(code, index) {
this.code = code;
this.index = index;
}
getCurr() {
return this.code[this.index];
}
skipSpaces() {
while (this.currIsSpace()) {
this.advance();
if (this.eof())
break;
}
}
currIsSpace() {
return RE_IS_SPACE.test(this.getCurr() || "");
}
currIs(expect) {
return this.code.startsWith(expect, this.index);
}
eof() {
return this.index >= this.code.length;
}
eat(expect) {
if (!this.currIs(expect)) {
return null;
}
this.index += expect.length;
return expect;
}
advance() {
this.index++;
return this.getCurr();
}
}
/** Parse HTML attributes */
function parseAttributes(code, startIndex) {
const attributes = [];
const state = new State(code, startIndex);
while (!state.eof()) {
state.skipSpaces();
if (state.currIs(">") || state.currIs("/>") || state.eof())
break;
attributes.push(parseAttribute(state));
}
return { attributes, index: state.index };
}
/** Parse HTML attribute */
function parseAttribute(state) {
const start = state.index;
// parse key
const key = parseAttributeKey(state);
const keyEnd = state.index;
state.skipSpaces();
if (!state.eat("=")) {
return {
type: "Attribute",
name: key,
value: true,
start,
end: keyEnd,
metadata: null,
parent: null,
};
}
state.skipSpaces();
if (state.eof()) {
return {
type: "Attribute",
name: key,
value: true,
start,
end: keyEnd,
metadata: null,
parent: null,
};
}
// parse value
const value = parseAttributeValue(state);
return {
type: "Attribute",
name: key,
value: [value],
start,
end: state.index,
metadata: null,
parent: null,
};
}
/** Parse HTML attribute key */
function parseAttributeKey(state) {
const start = state.index;
while (state.advance()) {
if (state.currIs("=") ||
state.currIs(">") ||
state.currIs("/>") ||
state.currIsSpace()) {
break;
}
}
const end = state.index;
return state.code.slice(start, end);
}
/** Parse HTML attribute value */
function parseAttributeValue(state) {
const start = state.index;
const quote = state.eat('"') || state.eat("'");
const startBk = state.index;
const expression = parseAttributeMustache(state);
if (expression) {
if (!quote || state.eat(quote)) {
const end = state.index;
return {
type: "ExpressionTag",
expression,
start,
end,
metadata: null,
parent: null,
};
}
}
state.index = startBk;
if (quote) {
if (state.eof()) {
return {
type: "Text",
data: quote,
raw: quote,
start,
end: state.index,
parent: null,
};
}
let c;
while ((c = state.getCurr())) {
state.advance();
if (c === quote) {
const end = state.index;
const data = state.code.slice(start + 1, end - 1);
return {
type: "Text",
data,
raw: data,
start: start + 1,
end: end - 1,
parent: null,
};
}
}
}
else {
while (state.advance()) {
if (state.currIsSpace() || state.currIs(">") || state.currIs("/>")) {
break;
}
}
}
const end = state.index;
const data = state.code.slice(start, end);
return {
type: "Text",
data,
raw: data,
start,
end,
parent: null,
};
}
/** Parse mustache */
function parseAttributeMustache(state) {
if (!state.eat("{")) {
return null;
}
// parse simple expression
const leadingComments = [];
const startBk = state.index;
state.skipSpaces();
let start = state.index;
while (!state.eof()) {
if (state.eat("//")) {
leadingComments.push(parseInlineComment(state.index - 2));
state.skipSpaces();
start = state.index;
continue;
}
if (state.eat("/*")) {
leadingComments.push(parseBlockComment(state.index - 2));
state.skipSpaces();
start = state.index;
continue;
}
const stringQuote = state.eat('"') || state.eat("'");
if (stringQuote) {
skipString(stringQuote);
state.skipSpaces();
continue;
}
const endCandidate = state.index;
state.skipSpaces();
if (state.eat("}")) {
const end = endCandidate;
try {
const espree = (0, espree_1.getEspree)();
const expression = espree.parse(state.code.slice(start, end), {
ecmaVersion: espree.latestEcmaVersion,
}).body[0].expression;
delete expression.range;
return Object.assign(Object.assign({}, expression), { leadingComments,
start,
end });
}
catch (_a) {
break;
}
}
state.advance();
}
state.index = startBk;
return null;
function parseInlineComment(tokenStart) {
const valueStart = state.index;
let valueEnd = null;
while (!state.eof()) {
if (state.eat("\n")) {
valueEnd = state.index - 1;
break;
}
state.advance();
}
if (valueEnd == null) {
valueEnd = state.index;
}
return {
type: "Line",
value: state.code.slice(valueStart, valueEnd),
start: tokenStart,
end: state.index,
};
}
function parseBlockComment(tokenStart) {
const valueStart = state.index;
let valueEnd = null;
while (!state.eof()) {
if (state.eat("*/")) {
valueEnd = state.index - 2;
break;
}
state.advance();
}
if (valueEnd == null) {
valueEnd = state.index;
}
return {
type: "Block",
value: state.code.slice(valueStart, valueEnd),
start: tokenStart,
end: state.index,
};
}
function skipString(stringQuote) {
while (!state.eof()) {
if (state.eat(stringQuote)) {
break;
}
if (state.eat("\\")) {
// escape
state.advance();
}
state.advance();
}
}
}
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