| import { OuterSubscriber } from '../OuterSubscriber'; |
| import { InnerSubscriber } from '../InnerSubscriber'; |
| import { subscribeToResult } from '../util/subscribeToResult'; |
| import { map } from './map'; |
| import { from } from '../observable/from'; |
| export function exhaustMap(project, resultSelector) { |
| if (resultSelector) { |
| return (source) => source.pipe(exhaustMap((a, i) => from(project(a, i)).pipe(map((b, ii) => resultSelector(a, b, i, ii))))); |
| } |
| return (source) => source.lift(new ExhaustMapOperator(project)); |
| } |
| class ExhaustMapOperator { |
| constructor(project) { |
| this.project = project; |
| } |
| call(subscriber, source) { |
| return source.subscribe(new ExhaustMapSubscriber(subscriber, this.project)); |
| } |
| } |
| class ExhaustMapSubscriber extends OuterSubscriber { |
| constructor(destination, project) { |
| super(destination); |
| this.project = project; |
| this.hasSubscription = false; |
| this.hasCompleted = false; |
| this.index = 0; |
| } |
| _next(value) { |
| if (!this.hasSubscription) { |
| this.tryNext(value); |
| } |
| } |
| tryNext(value) { |
| let result; |
| const index = this.index++; |
| try { |
| result = this.project(value, index); |
| } |
| catch (err) { |
| this.destination.error(err); |
| return; |
| } |
| this.hasSubscription = true; |
| this._innerSub(result, value, index); |
| } |
| _innerSub(result, value, index) { |
| const innerSubscriber = new InnerSubscriber(this, undefined, undefined); |
| const destination = this.destination; |
| destination.add(innerSubscriber); |
| subscribeToResult(this, result, value, index, innerSubscriber); |
| } |
| _complete() { |
| this.hasCompleted = true; |
| if (!this.hasSubscription) { |
| this.destination.complete(); |
| } |
| this.unsubscribe(); |
| } |
| notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) { |
| this.destination.next(innerValue); |
| } |
| notifyError(err) { |
| this.destination.error(err); |
| } |
| notifyComplete(innerSub) { |
| const destination = this.destination; |
| destination.remove(innerSub); |
| this.hasSubscription = false; |
| if (this.hasCompleted) { |
| this.destination.complete(); |
| } |
| } |
| } |
| //# sourceMappingURL=exhaustMap.js.map |
