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148 lines
3.9 KiB
148 lines
3.9 KiB
"use strict"; |
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module.exports = |
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function(Promise, PromiseArray, apiRejection) { |
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var util = require("./util"); |
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var RangeError = require("./errors").RangeError; |
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var AggregateError = require("./errors").AggregateError; |
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var isArray = util.isArray; |
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var CANCELLATION = {}; |
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function SomePromiseArray(values) { |
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this.constructor$(values); |
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this._howMany = 0; |
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this._unwrap = false; |
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this._initialized = false; |
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} |
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util.inherits(SomePromiseArray, PromiseArray); |
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SomePromiseArray.prototype._init = function () { |
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if (!this._initialized) { |
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return; |
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} |
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if (this._howMany === 0) { |
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this._resolve([]); |
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return; |
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} |
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this._init$(undefined, -5); |
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var isArrayResolved = isArray(this._values); |
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if (!this._isResolved() && |
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isArrayResolved && |
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this._howMany > this._canPossiblyFulfill()) { |
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this._reject(this._getRangeError(this.length())); |
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} |
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}; |
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SomePromiseArray.prototype.init = function () { |
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this._initialized = true; |
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this._init(); |
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}; |
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SomePromiseArray.prototype.setUnwrap = function () { |
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this._unwrap = true; |
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}; |
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SomePromiseArray.prototype.howMany = function () { |
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return this._howMany; |
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}; |
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SomePromiseArray.prototype.setHowMany = function (count) { |
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this._howMany = count; |
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}; |
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SomePromiseArray.prototype._promiseFulfilled = function (value) { |
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this._addFulfilled(value); |
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if (this._fulfilled() === this.howMany()) { |
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this._values.length = this.howMany(); |
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if (this.howMany() === 1 && this._unwrap) { |
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this._resolve(this._values[0]); |
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} else { |
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this._resolve(this._values); |
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} |
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return true; |
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} |
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return false; |
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}; |
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SomePromiseArray.prototype._promiseRejected = function (reason) { |
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this._addRejected(reason); |
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return this._checkOutcome(); |
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}; |
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SomePromiseArray.prototype._promiseCancelled = function () { |
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if (this._values instanceof Promise || this._values == null) { |
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return this._cancel(); |
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} |
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this._addRejected(CANCELLATION); |
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return this._checkOutcome(); |
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}; |
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SomePromiseArray.prototype._checkOutcome = function() { |
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if (this.howMany() > this._canPossiblyFulfill()) { |
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var e = new AggregateError(); |
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for (var i = this.length(); i < this._values.length; ++i) { |
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if (this._values[i] !== CANCELLATION) { |
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e.push(this._values[i]); |
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} |
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} |
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if (e.length > 0) { |
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this._reject(e); |
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} else { |
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this._cancel(); |
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} |
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return true; |
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} |
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return false; |
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}; |
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SomePromiseArray.prototype._fulfilled = function () { |
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return this._totalResolved; |
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}; |
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SomePromiseArray.prototype._rejected = function () { |
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return this._values.length - this.length(); |
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}; |
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SomePromiseArray.prototype._addRejected = function (reason) { |
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this._values.push(reason); |
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}; |
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SomePromiseArray.prototype._addFulfilled = function (value) { |
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this._values[this._totalResolved++] = value; |
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}; |
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SomePromiseArray.prototype._canPossiblyFulfill = function () { |
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return this.length() - this._rejected(); |
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}; |
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SomePromiseArray.prototype._getRangeError = function (count) { |
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var message = "Input array must contain at least " + |
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this._howMany + " items but contains only " + count + " items"; |
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return new RangeError(message); |
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}; |
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SomePromiseArray.prototype._resolveEmptyArray = function () { |
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this._reject(this._getRangeError(0)); |
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}; |
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function some(promises, howMany) { |
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if ((howMany | 0) !== howMany || howMany < 0) { |
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return apiRejection("expecting a positive integer\u000a\u000a See http://goo.gl/MqrFmX\u000a"); |
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} |
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var ret = new SomePromiseArray(promises); |
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var promise = ret.promise(); |
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ret.setHowMany(howMany); |
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ret.init(); |
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return promise; |
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} |
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Promise.some = function (promises, howMany) { |
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return some(promises, howMany); |
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}; |
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Promise.prototype.some = function (howMany) { |
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return some(this, howMany); |
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}; |
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Promise._SomePromiseArray = SomePromiseArray; |
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};
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