93 lines
3.5 KiB
JavaScript
93 lines
3.5 KiB
JavaScript
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"use strict";
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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var tryCatch_1 = require('../util/tryCatch');
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var errorObject_1 = require('../util/errorObject');
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var subscribeToResult_1 = require('../util/subscribeToResult');
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var OuterSubscriber_1 = require('../OuterSubscriber');
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function mergeScan(project, seed, concurrent) {
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if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
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return this.lift(new MergeScanOperator(project, seed, concurrent));
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}
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exports.mergeScan = mergeScan;
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var MergeScanOperator = (function () {
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function MergeScanOperator(project, seed, concurrent) {
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this.project = project;
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this.seed = seed;
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this.concurrent = concurrent;
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}
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MergeScanOperator.prototype.call = function (subscriber) {
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return new MergeScanSubscriber(subscriber, this.project, this.seed, this.concurrent);
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};
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return MergeScanOperator;
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}());
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exports.MergeScanOperator = MergeScanOperator;
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var MergeScanSubscriber = (function (_super) {
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__extends(MergeScanSubscriber, _super);
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function MergeScanSubscriber(destination, project, acc, concurrent) {
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_super.call(this, destination);
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this.project = project;
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this.acc = acc;
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this.concurrent = concurrent;
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this.hasValue = false;
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this.hasCompleted = false;
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this.buffer = [];
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this.active = 0;
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this.index = 0;
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}
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MergeScanSubscriber.prototype._next = function (value) {
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if (this.active < this.concurrent) {
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var index = this.index++;
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var ish = tryCatch_1.tryCatch(this.project)(this.acc, value);
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var destination = this.destination;
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if (ish === errorObject_1.errorObject) {
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destination.error(errorObject_1.errorObject.e);
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}
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else {
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this.active++;
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this._innerSub(ish, value, index);
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}
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}
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else {
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this.buffer.push(value);
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}
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};
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MergeScanSubscriber.prototype._innerSub = function (ish, value, index) {
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this.add(subscribeToResult_1.subscribeToResult(this, ish, value, index));
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};
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MergeScanSubscriber.prototype._complete = function () {
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this.hasCompleted = true;
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if (this.active === 0 && this.buffer.length === 0) {
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if (this.hasValue === false) {
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this.destination.next(this.acc);
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}
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this.destination.complete();
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}
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};
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MergeScanSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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var destination = this.destination;
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this.acc = innerValue;
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this.hasValue = true;
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destination.next(innerValue);
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};
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MergeScanSubscriber.prototype.notifyComplete = function (innerSub) {
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var buffer = this.buffer;
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this.remove(innerSub);
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this.active--;
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if (buffer.length > 0) {
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this._next(buffer.shift());
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}
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else if (this.active === 0 && this.hasCompleted) {
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if (this.hasValue === false) {
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this.destination.next(this.acc);
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}
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this.destination.complete();
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}
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};
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return MergeScanSubscriber;
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}(OuterSubscriber_1.OuterSubscriber));
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exports.MergeScanSubscriber = MergeScanSubscriber;
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//# sourceMappingURL=mergeScan.js.map
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