101 lines
3.4 KiB
JavaScript
101 lines
3.4 KiB
JavaScript
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import { Subscription } from '../Subscription';
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import { subscribeToResult } from '../util/subscribeToResult';
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import { OuterSubscriber } from '../OuterSubscriber';
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export function bufferToggle(openings, closingSelector) {
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return function bufferToggleOperatorFunction(source) {
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return source.lift(new BufferToggleOperator(openings, closingSelector));
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};
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}
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class BufferToggleOperator {
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constructor(openings, closingSelector) {
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this.openings = openings;
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this.closingSelector = closingSelector;
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}
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call(subscriber, source) {
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return source.subscribe(new BufferToggleSubscriber(subscriber, this.openings, this.closingSelector));
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}
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}
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class BufferToggleSubscriber extends OuterSubscriber {
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constructor(destination, openings, closingSelector) {
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super(destination);
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this.openings = openings;
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this.closingSelector = closingSelector;
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this.contexts = [];
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this.add(subscribeToResult(this, openings));
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}
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_next(value) {
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const contexts = this.contexts;
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const len = contexts.length;
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for (let i = 0; i < len; i++) {
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contexts[i].buffer.push(value);
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}
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}
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_error(err) {
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const contexts = this.contexts;
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while (contexts.length > 0) {
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const context = contexts.shift();
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context.subscription.unsubscribe();
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context.buffer = null;
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context.subscription = null;
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}
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this.contexts = null;
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super._error(err);
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}
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_complete() {
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const contexts = this.contexts;
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while (contexts.length > 0) {
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const context = contexts.shift();
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this.destination.next(context.buffer);
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context.subscription.unsubscribe();
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context.buffer = null;
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context.subscription = null;
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}
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this.contexts = null;
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super._complete();
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}
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notifyNext(outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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outerValue ? this.closeBuffer(outerValue) : this.openBuffer(innerValue);
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}
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notifyComplete(innerSub) {
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this.closeBuffer(innerSub.context);
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}
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openBuffer(value) {
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try {
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const closingSelector = this.closingSelector;
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const closingNotifier = closingSelector.call(this, value);
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if (closingNotifier) {
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this.trySubscribe(closingNotifier);
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}
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}
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catch (err) {
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this._error(err);
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}
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}
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closeBuffer(context) {
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const contexts = this.contexts;
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if (contexts && context) {
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const { buffer, subscription } = context;
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this.destination.next(buffer);
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contexts.splice(contexts.indexOf(context), 1);
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this.remove(subscription);
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subscription.unsubscribe();
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}
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}
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trySubscribe(closingNotifier) {
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const contexts = this.contexts;
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const buffer = [];
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const subscription = new Subscription();
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const context = { buffer, subscription };
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contexts.push(context);
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const innerSubscription = subscribeToResult(this, closingNotifier, context);
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if (!innerSubscription || innerSubscription.closed) {
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this.closeBuffer(context);
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}
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else {
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innerSubscription.context = context;
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this.add(innerSubscription);
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subscription.add(innerSubscription);
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}
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}
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}
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//# sourceMappingURL=bufferToggle.js.map
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