| /** |
| * 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 errors = require("./errors.js"); |
| var async = require("./async.js"); |
| var CancellationError = errors.CancellationError; |
| var SYNC_TOKEN = {}; |
| |
| Promise.prototype._cancel = function Promise$_cancel() { |
| if (!this.isCancellable()) return this; |
| var parent; |
| if ((parent = this._cancellationParent) !== void 0) { |
| parent.cancel(SYNC_TOKEN); |
| return; |
| } |
| var err = new CancellationError(); |
| this._attachExtraTrace(err); |
| this._rejectUnchecked(err); |
| }; |
| |
| Promise.prototype.cancel = function Promise$cancel(token) { |
| if (!this.isCancellable()) return this; |
| if (token === SYNC_TOKEN) { |
| this._cancel(); |
| return this; |
| } |
| async.invokeLater(this._cancel, this, void 0); |
| return this; |
| }; |
| |
| Promise.prototype.cancellable = function Promise$cancellable() { |
| if (this._cancellable()) return this; |
| this._setCancellable(); |
| this._cancellationParent = void 0; |
| return this; |
| }; |
| |
| Promise.prototype.uncancellable = function Promise$uncancellable() { |
| var ret = new Promise(INTERNAL); |
| ret._setTrace(this.uncancellable, this); |
| ret._follow(this); |
| ret._unsetCancellable(); |
| if (this._isBound()) ret._setBoundTo(this._boundTo); |
| return ret; |
| }; |
| |
| Promise.prototype.fork = |
| function Promise$fork(didFulfill, didReject, didProgress) { |
| var ret = this._then(didFulfill, didReject, didProgress, |
| void 0, void 0, this.fork); |
| |
| ret._setCancellable(); |
| ret._cancellationParent = void 0; |
| return ret; |
| }; |
| }; |