| /** |
| * 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 apiRejection = require("./errors_api_rejection.js")(Promise); |
| var isArray = require("./util.js").isArray; |
| |
| var raceLater = function Promise$_raceLater(promise) { |
| return promise.then(function Promise$_lateRacer(array) { |
| return Promise$_Race(array, Promise$_lateRacer, promise); |
| }); |
| }; |
| |
| var hasOwn = {}.hasOwnProperty; |
| function Promise$_Race(promises, caller, parent) { |
| var maybePromise = Promise._cast(promises, caller, void 0); |
| |
| if (Promise.is(maybePromise)) { |
| return raceLater(maybePromise); |
| } |
| else if (!isArray(promises)) { |
| return apiRejection("expecting an array, a promise or a thenable"); |
| } |
| |
| var ret = new Promise(INTERNAL); |
| ret._setTrace(caller, parent); |
| if (parent !== void 0) { |
| if (parent._isBound()) { |
| ret._setBoundTo(parent._boundTo); |
| } |
| if (parent._cancellable()) { |
| ret._setCancellable(); |
| ret._cancellationParent = parent; |
| } |
| } |
| var fulfill = ret._fulfill; |
| var reject = ret._reject; |
| for (var i = 0, len = promises.length; i < len; ++i) { |
| var val = promises[i]; |
| |
| if (val === void 0 && !(hasOwn.call(promises, i))) { |
| continue; |
| } |
| |
| Promise.cast(val)._then( |
| fulfill, |
| reject, |
| void 0, |
| ret, |
| null, |
| caller |
| ); |
| } |
| return ret; |
| } |
| |
| Promise.race = function Promise$Race(promises) { |
| return Promise$_Race(promises, Promise.race, void 0); |
| }; |
| |
| Promise.prototype.race = function Promise$race() { |
| return Promise$_Race(this, this.race, void 0); |
| }; |
| |
| }; |