D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
proc
/
self
/
root
/
usr
/
lib
/
node_modules
/
npm
/
node_modules
/
bluebird
/
js
/
release
/
Filename :
generators.js
back
Copy
"use strict"; module.exports = function(Promise, apiRejection, INTERNAL, tryConvertToPromise, Proxyable, debug) { var errors = require("./errors"); var TypeError = errors.TypeError; var util = require("./util"); var errorObj = util.errorObj; var tryCatch = util.tryCatch; var yieldHandlers = []; function promiseFromYieldHandler(value, yieldHandlers, traceParent) { for (var i = 0; i < yieldHandlers.length; ++i) { traceParent._pushContext(); var result = tryCatch(yieldHandlers[i])(value); traceParent._popContext(); if (result === errorObj) { traceParent._pushContext(); var ret = Promise.reject(errorObj.e); traceParent._popContext(); return ret; } var maybePromise = tryConvertToPromise(result, traceParent); if (maybePromise instanceof Promise) return maybePromise; } return null; } function PromiseSpawn(generatorFunction, receiver, yieldHandler, stack) { if (debug.cancellation()) { var internal = new Promise(INTERNAL); var _finallyPromise = this._finallyPromise = new Promise(INTERNAL); this._promise = internal.lastly(function() { return _finallyPromise; }); internal._captureStackTrace(); internal._setOnCancel(this); } else { var promise = this._promise = new Promise(INTERNAL); promise._captureStackTrace(); } this._stack = stack; this._generatorFunction = generatorFunction; this._receiver = receiver; this._generator = undefined; this._yieldHandlers = typeof yieldHandler === "function" ? [yieldHandler].concat(yieldHandlers) : yieldHandlers; this._yieldedPromise = null; this._cancellationPhase = false; } util.inherits(PromiseSpawn, Proxyable); PromiseSpawn.prototype._isResolved = function() { return this._promise === null; }; PromiseSpawn.prototype._cleanup = function() { this._promise = this._generator = null; if (debug.cancellation() && this._finallyPromise !== null) { this._finallyPromise._fulfill(); this._finallyPromise = null; } }; PromiseSpawn.prototype._promiseCancelled = function() { if (this._isResolved()) return; var implementsReturn = typeof this._generator["return"] !== "undefined"; var result; if (!implementsReturn) { var reason = new Promise.CancellationError( "generator .return() sentinel"); Promise.coroutine.returnSentinel = reason; this._promise._attachExtraTrace(reason); this._promise._pushContext(); result = tryCatch(this._generator["throw"]).call(this._generator, reason); this._promise._popContext(); } else { this._promise._pushContext(); result = tryCatch(this._generator["return"]).call(this._generator, undefined); this._promise._popContext(); } this._cancellationPhase = true; this._yieldedPromise = null; this._continue(result); }; PromiseSpawn.prototype._promiseFulfilled = function(value) { this._yieldedPromise = null; this._promise._pushContext(); var result = tryCatch(this._generator.next).call(this._generator, value); this._promise._popContext(); this._continue(result); }; PromiseSpawn.prototype._promiseRejected = function(reason) { this._yieldedPromise = null; this._promise._attachExtraTrace(reason); this._promise._pushContext(); var result = tryCatch(this._generator["throw"]) .call(this._generator, reason); this._promise._popContext(); this._continue(result); }; PromiseSpawn.prototype._resultCancelled = function() { if (this._yieldedPromise instanceof Promise) { var promise = this._yieldedPromise; this._yieldedPromise = null; promise.cancel(); } }; PromiseSpawn.prototype.promise = function () { return this._promise; }; PromiseSpawn.prototype._run = function () { this._generator = this._generatorFunction.call(this._receiver); this._receiver = this._generatorFunction = undefined; this._promiseFulfilled(undefined); }; PromiseSpawn.prototype._continue = function (result) { var promise = this._promise; if (result === errorObj) { this._cleanup(); if (this._cancellationPhase) { return promise.cancel(); } else { return promise._rejectCallback(result.e, false); } } var value = result.value; if (result.done === true) { this._cleanup(); if (this._cancellationPhase) { return promise.cancel(); } else { return promise._resolveCallback(value); } } else { var maybePromise = tryConvertToPromise(value, this._promise); if (!(maybePromise instanceof Promise)) { maybePromise = promiseFromYieldHandler(maybePromise, this._yieldHandlers, this._promise); if (maybePromise === null) { this._promiseRejected( new TypeError( "A value %s was yielded that could not be treated as a promise\u000a\u000a See http://goo.gl/MqrFmX\u000a\u000a".replace("%s", String(value)) + "From coroutine:\u000a" + this._stack.split("\n").slice(1, -7).join("\n") ) ); return; } } maybePromise = maybePromise._target(); var bitField = maybePromise._bitField; ; if (((bitField & 50397184) === 0)) { this._yieldedPromise = maybePromise; maybePromise._proxy(this, null); } else if (((bitField & 33554432) !== 0)) { Promise._async.invoke( this._promiseFulfilled, this, maybePromise._value() ); } else if (((bitField & 16777216) !== 0)) { Promise._async.invoke( this._promiseRejected, this, maybePromise._reason() ); } else { this._promiseCancelled(); } } }; Promise.coroutine = function (generatorFunction, options) { if (typeof generatorFunction !== "function") { throw new TypeError("generatorFunction must be a function\u000a\u000a See http://goo.gl/MqrFmX\u000a"); } var yieldHandler = Object(options).yieldHandler; var PromiseSpawn$ = PromiseSpawn; var stack = new Error().stack; return function () { var generator = generatorFunction.apply(this, arguments); var spawn = new PromiseSpawn$(undefined, undefined, yieldHandler, stack); var ret = spawn.promise(); spawn._generator = generator; spawn._promiseFulfilled(undefined); return ret; }; }; Promise.coroutine.addYieldHandler = function(fn) { if (typeof fn !== "function") { throw new TypeError("expecting a function but got " + util.classString(fn)); } yieldHandlers.push(fn); }; Promise.spawn = function (generatorFunction) { debug.deprecated("Promise.spawn()", "Promise.coroutine()"); if (typeof generatorFunction !== "function") { return apiRejection("generatorFunction must be a function\u000a\u000a See http://goo.gl/MqrFmX\u000a"); } var spawn = new PromiseSpawn(generatorFunction, this); var ret = spawn.promise(); spawn._run(Promise.spawn); return ret; }; };