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