source: trip-planner-front/node_modules/rxjs/_esm5/internal/operators/mergeMap.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1/** PURE_IMPORTS_START tslib,_map,_observable_from,_innerSubscribe PURE_IMPORTS_END */
2import * as tslib_1 from "tslib";
3import { map } from './map';
4import { from } from '../observable/from';
5import { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';
6export function mergeMap(project, resultSelector, concurrent) {
7 if (concurrent === void 0) {
8 concurrent = Number.POSITIVE_INFINITY;
9 }
10 if (typeof resultSelector === 'function') {
11 return function (source) { return source.pipe(mergeMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); }, concurrent)); };
12 }
13 else if (typeof resultSelector === 'number') {
14 concurrent = resultSelector;
15 }
16 return function (source) { return source.lift(new MergeMapOperator(project, concurrent)); };
17}
18var MergeMapOperator = /*@__PURE__*/ (function () {
19 function MergeMapOperator(project, concurrent) {
20 if (concurrent === void 0) {
21 concurrent = Number.POSITIVE_INFINITY;
22 }
23 this.project = project;
24 this.concurrent = concurrent;
25 }
26 MergeMapOperator.prototype.call = function (observer, source) {
27 return source.subscribe(new MergeMapSubscriber(observer, this.project, this.concurrent));
28 };
29 return MergeMapOperator;
30}());
31export { MergeMapOperator };
32var MergeMapSubscriber = /*@__PURE__*/ (function (_super) {
33 tslib_1.__extends(MergeMapSubscriber, _super);
34 function MergeMapSubscriber(destination, project, concurrent) {
35 if (concurrent === void 0) {
36 concurrent = Number.POSITIVE_INFINITY;
37 }
38 var _this = _super.call(this, destination) || this;
39 _this.project = project;
40 _this.concurrent = concurrent;
41 _this.hasCompleted = false;
42 _this.buffer = [];
43 _this.active = 0;
44 _this.index = 0;
45 return _this;
46 }
47 MergeMapSubscriber.prototype._next = function (value) {
48 if (this.active < this.concurrent) {
49 this._tryNext(value);
50 }
51 else {
52 this.buffer.push(value);
53 }
54 };
55 MergeMapSubscriber.prototype._tryNext = function (value) {
56 var result;
57 var index = this.index++;
58 try {
59 result = this.project(value, index);
60 }
61 catch (err) {
62 this.destination.error(err);
63 return;
64 }
65 this.active++;
66 this._innerSub(result);
67 };
68 MergeMapSubscriber.prototype._innerSub = function (ish) {
69 var innerSubscriber = new SimpleInnerSubscriber(this);
70 var destination = this.destination;
71 destination.add(innerSubscriber);
72 var innerSubscription = innerSubscribe(ish, innerSubscriber);
73 if (innerSubscription !== innerSubscriber) {
74 destination.add(innerSubscription);
75 }
76 };
77 MergeMapSubscriber.prototype._complete = function () {
78 this.hasCompleted = true;
79 if (this.active === 0 && this.buffer.length === 0) {
80 this.destination.complete();
81 }
82 this.unsubscribe();
83 };
84 MergeMapSubscriber.prototype.notifyNext = function (innerValue) {
85 this.destination.next(innerValue);
86 };
87 MergeMapSubscriber.prototype.notifyComplete = function () {
88 var buffer = this.buffer;
89 this.active--;
90 if (buffer.length > 0) {
91 this._next(buffer.shift());
92 }
93 else if (this.active === 0 && this.hasCompleted) {
94 this.destination.complete();
95 }
96 };
97 return MergeMapSubscriber;
98}(SimpleOuterSubscriber));
99export { MergeMapSubscriber };
100export var flatMap = mergeMap;
101//# sourceMappingURL=mergeMap.js.map
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