149 lines
3.9 KiB
JavaScript
149 lines
3.9 KiB
JavaScript
"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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