109 lines
No EOL
4.2 KiB
JavaScript
109 lines
No EOL
4.2 KiB
JavaScript
"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return extendStatics(d, b);
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}
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return function (d, b) {
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extendStatics(d, b);
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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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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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var map_1 = require("./map");
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var from_1 = require("../observable/from");
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var innerSubscribe_1 = require("../innerSubscribe");
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function mergeMap(project, resultSelector, concurrent) {
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if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
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if (typeof resultSelector === 'function') {
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return function (source) { return source.pipe(mergeMap(function (a, i) { return from_1.from(project(a, i)).pipe(map_1.map(function (b, ii) { return resultSelector(a, b, i, ii); })); }, concurrent)); };
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}
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else if (typeof resultSelector === 'number') {
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concurrent = resultSelector;
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}
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return function (source) { return source.lift(new MergeMapOperator(project, concurrent)); };
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}
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exports.mergeMap = mergeMap;
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var MergeMapOperator = (function () {
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function MergeMapOperator(project, concurrent) {
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if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
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this.project = project;
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this.concurrent = concurrent;
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}
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MergeMapOperator.prototype.call = function (observer, source) {
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return source.subscribe(new MergeMapSubscriber(observer, this.project, this.concurrent));
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};
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return MergeMapOperator;
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}());
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exports.MergeMapOperator = MergeMapOperator;
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var MergeMapSubscriber = (function (_super) {
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__extends(MergeMapSubscriber, _super);
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function MergeMapSubscriber(destination, project, concurrent) {
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if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; }
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var _this = _super.call(this, destination) || this;
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_this.project = project;
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_this.concurrent = concurrent;
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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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return _this;
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}
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MergeMapSubscriber.prototype._next = function (value) {
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if (this.active < this.concurrent) {
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this._tryNext(value);
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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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MergeMapSubscriber.prototype._tryNext = function (value) {
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var result;
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var index = this.index++;
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try {
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result = this.project(value, index);
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}
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catch (err) {
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this.destination.error(err);
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return;
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}
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this.active++;
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this._innerSub(result);
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};
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MergeMapSubscriber.prototype._innerSub = function (ish) {
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var innerSubscriber = new innerSubscribe_1.SimpleInnerSubscriber(this);
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var destination = this.destination;
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destination.add(innerSubscriber);
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var innerSubscription = innerSubscribe_1.innerSubscribe(ish, innerSubscriber);
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if (innerSubscription !== innerSubscriber) {
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destination.add(innerSubscription);
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}
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};
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MergeMapSubscriber.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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this.destination.complete();
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}
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this.unsubscribe();
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};
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MergeMapSubscriber.prototype.notifyNext = function (innerValue) {
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this.destination.next(innerValue);
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};
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MergeMapSubscriber.prototype.notifyComplete = function () {
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var buffer = this.buffer;
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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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this.destination.complete();
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}
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};
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return MergeMapSubscriber;
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}(innerSubscribe_1.SimpleOuterSubscriber));
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exports.MergeMapSubscriber = MergeMapSubscriber;
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exports.flatMap = mergeMap;
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//# sourceMappingURL=mergeMap.js.map
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