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class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { ArrayObservable } from '../observable/ArrayObservable'; import { isArray } from '../util/isArray'; import { Subscriber } from '../Subscriber'; import { OuterSubscriber } from '../OuterSubscriber'; import { subscribeToResult } from '../util/subscribeToResult'; import { $$iterator } from '../symbol/iterator'; /* tslint:disable:max-line-length */ export function zipProto() { var observables = []; for (var _i = 0; _i < arguments.length; _i++) { observables[_i - 0] = arguments[_i]; } return this.lift.call(zipStatic.apply(void 0, [this].concat(observables))); } /* tslint:enable:max-line-length */ /** * @param observables * @return {Observable<R>} * @static true * @name zip * @owner Observable */ export function zipStatic() { var observables = []; for (var _i = 0; _i < arguments.length; _i++) { observables[_i - 0] = arguments[_i]; } var project = observables[observables.length - 1]; if (typeof project === 'function') { observables.pop(); } return new ArrayObservable(observables).lift(new ZipOperator(project)); } export var ZipOperator = (function () { function ZipOperator(project) { this.project = project; } ZipOperator.prototype.call = function (subscriber, source) { return source._subscribe(new ZipSubscriber(subscriber, this.project)); }; return ZipOperator; }()); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ export var ZipSubscriber = (function (_super) { __extends(ZipSubscriber, _super); function ZipSubscriber(destination, project, values) { if (values === void 0) { values = Object.create(null); } _super.call(this, destination); this.iterators = []; this.active = 0; this.project = (typeof project === 'function') ? project : null; this.values = values; } ZipSubscriber.prototype._next = function (value) { var iterators = this.iterators; if (isArray(value)) { iterators.push(new StaticArrayIterator(value)); } else if (typeof value[$$iterator] === 'function') { iterators.push(new StaticIterator(value[$$iterator]())); } else { iterators.push(new ZipBufferIterator(this.destination, this, value)); } }; ZipSubscriber.prototype._complete = function () { var iterators = this.iterators; var len = iterators.length; this.active = len; for (var i = 0; i < len; i++) { var iterator = iterators[i]; if (iterator.stillUnsubscribed) { this.add(iterator.subscribe(iterator, i)); } else { this.active--; // not an observable } } }; ZipSubscriber.prototype.notifyInactive = function () { this.active--; if (this.active === 0) { this.destination.complete(); } }; ZipSubscriber.prototype.checkIterators = function () { var iterators = this.iterators; var len = iterators.length; var destination = this.destination; // abort if not all of them have values for (var i = 0; i < len; i++) { var iterator = iterators[i]; if (typeof iterator.hasValue === 'function' && !iterator.hasValue()) { return; } } var shouldComplete = false; var args = []; for (var i = 0; i < len; i++) { var iterator = iterators[i]; var result = iterator.next(); // check to see if it's completed now that you've gotten // the next value. if (iterator.hasCompleted()) { shouldComplete = true; } if (result.done) { destination.complete(); return; } args.push(result.value); } if (this.project) { this._tryProject(args); } else { destination.next(args); } if (shouldComplete) { destination.complete(); } }; ZipSubscriber.prototype._tryProject = function (args) { var result; try { result = this.project.apply(this, args); } catch (err) { this.destination.error(err); return; } this.destination.next(result); }; return ZipSubscriber; }(Subscriber)); var StaticIterator = (function () { function StaticIterator(iterator) { this.iterator = iterator; this.nextResult = iterator.next(); } StaticIterator.prototype.hasValue = function () { return true; }; StaticIterator.prototype.next = function () { var result = this.nextResult; this.nextResult = this.iterator.next(); return result; }; StaticIterator.prototype.hasCompleted = function () { var nextResult = this.nextResult; return nextResult && nextResult.done; }; return StaticIterator; }()); var StaticArrayIterator = (function () { function StaticArrayIterator(array) { this.array = array; this.index = 0; this.length = 0; this.length = array.length; } StaticArrayIterator.prototype[$$iterator] = function () { return this; }; StaticArrayIterator.prototype.next = function (value) { var i = this.index++; var array = this.array; return i < this.length ? { value: array[i], done: false } : { value: null, done: true }; }; StaticArrayIterator.prototype.hasValue = function () { return this.array.length > this.index; }; StaticArrayIterator.prototype.hasCompleted = function () { return this.array.length === this.index; }; return StaticArrayIterator; }()); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ var ZipBufferIterator = (function (_super) { __extends(ZipBufferIterator, _super); function ZipBufferIterator(destination, parent, observable) { _super.call(this, destination); this.parent = parent; this.observable = observable; this.stillUnsubscribed = true; this.buffer = []; this.isComplete = false; } ZipBufferIterator.prototype[$$iterator] = function () { return this; }; // NOTE: there is actually a name collision here with Subscriber.next and Iterator.next // this is legit because `next()` will never be called by a subscription in this case. ZipBufferIterator.prototype.next = function () { var buffer = this.buffer; if (buffer.length === 0 && this.isComplete) { return { value: null, done: true }; } else { return { value: buffer.shift(), done: false }; } }; ZipBufferIterator.prototype.hasValue = function () { return this.buffer.length > 0; }; ZipBufferIterator.prototype.hasCompleted = function () { return this.buffer.length === 0 && this.isComplete; }; ZipBufferIterator.prototype.notifyComplete = function () { if (this.buffer.length > 0) { this.isComplete = true; this.parent.notifyInactive(); } else { this.destination.complete(); } }; ZipBufferIterator.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) { this.buffer.push(innerValue); this.parent.checkIterators(); }; ZipBufferIterator.prototype.subscribe = function (value, index) { return subscribeToResult(this, this.observable, this, index); }; return ZipBufferIterator; }(OuterSubscriber)); //# sourceMappingURL=zip.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span data-ice="esdocVersion">(0.4.8)</span></a> </footer> <script src="script/search_index.js"></script> <script src="script/search.js"></script> <script src="script/pretty-print.js"></script> <script src="script/inherited-summary.js"></script> <script src="script/test-summary.js"></script> <script src="script/inner-link.js"></script> <script src="script/patch-for-local.js"></script> </body> </html>