| /** PURE_IMPORTS_START tslib,_OuterSubscriber,_InnerSubscriber,_util_subscribeToResult,_map,_observable_from PURE_IMPORTS_END */ |
| import * as tslib_1 from "tslib"; |
| import { OuterSubscriber } from '../OuterSubscriber'; |
| import { InnerSubscriber } from '../InnerSubscriber'; |
| import { subscribeToResult } from '../util/subscribeToResult'; |
| import { map } from './map'; |
| import { from } from '../observable/from'; |
| export function switchMap(project, resultSelector) { |
| if (typeof resultSelector === 'function') { |
| return function (source) { return source.pipe(switchMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); }; |
| } |
| return function (source) { return source.lift(new SwitchMapOperator(project)); }; |
| } |
| var SwitchMapOperator = /*@__PURE__*/ (function () { |
| function SwitchMapOperator(project) { |
| this.project = project; |
| } |
| SwitchMapOperator.prototype.call = function (subscriber, source) { |
| return source.subscribe(new SwitchMapSubscriber(subscriber, this.project)); |
| }; |
| return SwitchMapOperator; |
| }()); |
| var SwitchMapSubscriber = /*@__PURE__*/ (function (_super) { |
| tslib_1.__extends(SwitchMapSubscriber, _super); |
| function SwitchMapSubscriber(destination, project) { |
| var _this = _super.call(this, destination) || this; |
| _this.project = project; |
| _this.index = 0; |
| return _this; |
| } |
| SwitchMapSubscriber.prototype._next = function (value) { |
| var result; |
| var index = this.index++; |
| try { |
| result = this.project(value, index); |
| } |
| catch (error) { |
| this.destination.error(error); |
| return; |
| } |
| this._innerSub(result, value, index); |
| }; |
| SwitchMapSubscriber.prototype._innerSub = function (result, value, index) { |
| var innerSubscription = this.innerSubscription; |
| if (innerSubscription) { |
| innerSubscription.unsubscribe(); |
| } |
| var innerSubscriber = new InnerSubscriber(this, undefined, undefined); |
| var destination = this.destination; |
| destination.add(innerSubscriber); |
| this.innerSubscription = subscribeToResult(this, result, value, index, innerSubscriber); |
| }; |
| SwitchMapSubscriber.prototype._complete = function () { |
| var innerSubscription = this.innerSubscription; |
| if (!innerSubscription || innerSubscription.closed) { |
| _super.prototype._complete.call(this); |
| } |
| this.unsubscribe(); |
| }; |
| SwitchMapSubscriber.prototype._unsubscribe = function () { |
| this.innerSubscription = null; |
| }; |
| SwitchMapSubscriber.prototype.notifyComplete = function (innerSub) { |
| var destination = this.destination; |
| destination.remove(innerSub); |
| this.innerSubscription = null; |
| if (this.isStopped) { |
| _super.prototype._complete.call(this); |
| } |
| }; |
| SwitchMapSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) { |
| this.destination.next(innerValue); |
| }; |
| return SwitchMapSubscriber; |
| }(OuterSubscriber)); |
| //# sourceMappingURL=switchMap.js.map |