77 lines
3.1 KiB
JavaScript
77 lines
3.1 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 OuterSubscriber_1 = require('../OuterSubscriber');
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var subscribeToResult_1 = require('../util/subscribeToResult');
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function switchMapTo(observable, resultSelector) {
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return this.lift(new SwitchMapToOperator(observable, resultSelector));
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}
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exports.switchMapTo = switchMapTo;
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var SwitchMapToOperator = (function () {
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function SwitchMapToOperator(observable, resultSelector) {
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this.observable = observable;
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this.resultSelector = resultSelector;
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}
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SwitchMapToOperator.prototype.call = function (subscriber) {
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return new SwitchMapToSubscriber(subscriber, this.observable, this.resultSelector);
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};
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return SwitchMapToOperator;
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}());
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var SwitchMapToSubscriber = (function (_super) {
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__extends(SwitchMapToSubscriber, _super);
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function SwitchMapToSubscriber(destination, inner, resultSelector) {
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_super.call(this, destination);
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this.inner = inner;
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this.resultSelector = resultSelector;
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this.index = 0;
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}
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SwitchMapToSubscriber.prototype._next = function (value) {
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var innerSubscription = this.innerSubscription;
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if (innerSubscription) {
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innerSubscription.unsubscribe();
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}
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this.add(this.innerSubscription = subscribeToResult_1.subscribeToResult(this, this.inner, value, this.index++));
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};
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SwitchMapToSubscriber.prototype._complete = function () {
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var innerSubscription = this.innerSubscription;
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if (!innerSubscription || innerSubscription.isUnsubscribed) {
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_super.prototype._complete.call(this);
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}
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};
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SwitchMapToSubscriber.prototype._unsubscribe = function () {
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this.innerSubscription = null;
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};
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SwitchMapToSubscriber.prototype.notifyComplete = function (innerSub) {
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this.remove(innerSub);
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this.innerSubscription = null;
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if (this.isStopped) {
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_super.prototype._complete.call(this);
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}
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};
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SwitchMapToSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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var _a = this, resultSelector = _a.resultSelector, destination = _a.destination;
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if (resultSelector) {
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this.tryResultSelector(outerValue, innerValue, outerIndex, innerIndex);
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}
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else {
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destination.next(innerValue);
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}
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};
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SwitchMapToSubscriber.prototype.tryResultSelector = function (outerValue, innerValue, outerIndex, innerIndex) {
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var _a = this, resultSelector = _a.resultSelector, destination = _a.destination;
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var result;
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try {
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result = resultSelector(outerValue, innerValue, outerIndex, innerIndex);
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}
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catch (err) {
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destination.error(err);
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return;
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}
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destination.next(result);
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};
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return SwitchMapToSubscriber;
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}(OuterSubscriber_1.OuterSubscriber));
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//# sourceMappingURL=switchMapTo.js.map
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