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class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { tryCatch } from '../util/tryCatch'; import { errorObject } from '../util/errorObject'; import { subscribeToResult } from '../util/subscribeToResult'; import { OuterSubscriber } from '../OuterSubscriber'; /** * @param project * @param seed * @param concurrent * @return {Observable<R>|WebSocketSubject<T>|Observable<T>} * @method mergeScan * @owner Observable */ export function mergeScan(project, seed, concurrent) { if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; } return this.lift(new MergeScanOperator(project, seed, concurrent)); } export var MergeScanOperator = (function () { function MergeScanOperator(project, seed, concurrent) { this.project = project; this.seed = seed; this.concurrent = concurrent; } MergeScanOperator.prototype.call = function (subscriber, source) { return source._subscribe(new MergeScanSubscriber(subscriber, this.project, this.seed, this.concurrent)); }; return MergeScanOperator; }()); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ export var MergeScanSubscriber = (function (_super) { __extends(MergeScanSubscriber, _super); function MergeScanSubscriber(destination, project, acc, concurrent) { _super.call(this, destination); this.project = project; this.acc = acc; this.concurrent = concurrent; this.hasValue = false; this.hasCompleted = false; this.buffer = []; this.active = 0; this.index = 0; } MergeScanSubscriber.prototype._next = function (value) { if (this.active < this.concurrent) { var index = this.index++; var ish = tryCatch(this.project)(this.acc, value); var destination = this.destination; if (ish === errorObject) { destination.error(errorObject.e); } else { this.active++; this._innerSub(ish, value, index); } } else { this.buffer.push(value); } }; MergeScanSubscriber.prototype._innerSub = function (ish, value, index) { this.add(subscribeToResult(this, ish, value, index)); }; MergeScanSubscriber.prototype._complete = function () { this.hasCompleted = true; if (this.active === 0 && this.buffer.length === 0) { if (this.hasValue === false) { this.destination.next(this.acc); } this.destination.complete(); } }; MergeScanSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) { var destination = this.destination; this.acc = innerValue; this.hasValue = true; destination.next(innerValue); }; MergeScanSubscriber.prototype.notifyComplete = function (innerSub) { var buffer = this.buffer; this.remove(innerSub); this.active--; if (buffer.length > 0) { this._next(buffer.shift()); } else if (this.active === 0 && this.hasCompleted) { if (this.hasValue === false) { this.destination.next(this.acc); } this.destination.complete(); } }; return MergeScanSubscriber; }(OuterSubscriber)); //# sourceMappingURL=mergeScan.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span 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