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/**
* Copyright (c) 2014 Petka Antonov
*
* 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:</p>
*
* 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.
*
*/
"use strict";
module.exports = function(Promise, INTERNAL) {
var ASSERT = require("./assert.js");
var util = require("./util.js");
var canAttach = require("./errors.js").canAttach;
var errorObj = util.errorObj;
var isObject = util.isObject;
function getThen(obj) {
try {
return obj.then;
}
catch(e) {
errorObj.e = e;
return errorObj;
}
}
function Promise$_Cast(obj, caller, originalPromise) {
if (isObject(obj)) {
if (obj instanceof Promise) {
return obj;
}
else if (isAnyBluebirdPromise(obj)) {
var ret = new Promise(INTERNAL);
ret._setTrace(caller, void 0);
obj._then(
ret._fulfillUnchecked,
ret._rejectUncheckedCheckError,
ret._progressUnchecked,
ret,
null,
void 0
);
ret._setFollowing();
return ret;
}
var then = getThen(obj);
if (then === errorObj) {
caller = typeof caller === "function" ? caller : Promise$_Cast;
if (originalPromise !== void 0 && canAttach(then.e)) {
originalPromise._attachExtraTrace(then.e);
}
return Promise.reject(then.e, caller);
}
else if (typeof then === "function") {
caller = typeof caller === "function" ? caller : Promise$_Cast;
return Promise$_doThenable(obj, then, caller, originalPromise);
}
}
return obj;
}
var hasProp = {}.hasOwnProperty;
function isAnyBluebirdPromise(obj) {
return hasProp.call(obj, "_promise0");
}
function Promise$_doThenable(x, then, caller, originalPromise) {
var resolver = Promise.defer(caller);
var called = false;
try {
then.call(
x,
Promise$_resolveFromThenable,
Promise$_rejectFromThenable,
Promise$_progressFromThenable
);
}
catch(e) {
if (!called) {
called = true;
var trace = canAttach(e) ? e : new Error(e + "");
if (originalPromise !== void 0) {
originalPromise._attachExtraTrace(trace);
}
resolver.promise._reject(e, trace);
}
}
return resolver.promise;
function Promise$_resolveFromThenable(y) {
if (called) return;
called = true;
if (x === y) {
var e = Promise._makeSelfResolutionError();
if (originalPromise !== void 0) {
originalPromise._attachExtraTrace(e);
}
resolver.promise._reject(e, void 0);
return;
}
resolver.resolve(y);
}
function Promise$_rejectFromThenable(r) {
if (called) return;
called = true;
var trace = canAttach(r) ? r : new Error(r + "");
if (originalPromise !== void 0) {
originalPromise._attachExtraTrace(trace);
}
resolver.promise._reject(r, trace);
}
function Promise$_progressFromThenable(v) {
if (called) return;
var promise = resolver.promise;
if (typeof promise._progress === "function") {
promise._progress(v);
}
}
}
Promise._cast = Promise$_Cast;
};
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