1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
import { async } from '../scheduler/async';
import { isDate } from '../util/isDate';
import { Subscriber } from '../Subscriber';
import { Notification } from '../Notification';
export function delay(delay, scheduler = async) {
const absoluteDelay = isDate(delay);
const delayFor = absoluteDelay ? (+delay - scheduler.now()) : Math.abs(delay);
return (source) => source.lift(new DelayOperator(delayFor, scheduler));
}
class DelayOperator {
constructor(delay, scheduler) {
this.delay = delay;
this.scheduler = scheduler;
}
call(subscriber, source) {
return source.subscribe(new DelaySubscriber(subscriber, this.delay, this.scheduler));
}
}
class DelaySubscriber extends Subscriber {
constructor(destination, delay, scheduler) {
super(destination);
this.delay = delay;
this.scheduler = scheduler;
this.queue = [];
this.active = false;
this.errored = false;
}
static dispatch(state) {
const source = state.source;
const queue = source.queue;
const scheduler = state.scheduler;
const destination = state.destination;
while (queue.length > 0 && (queue[0].time - scheduler.now()) <= 0) {
queue.shift().notification.observe(destination);
}
if (queue.length > 0) {
const delay = Math.max(0, queue[0].time - scheduler.now());
this.schedule(state, delay);
}
else {
this.unsubscribe();
source.active = false;
}
}
_schedule(scheduler) {
this.active = true;
this.add(scheduler.schedule(DelaySubscriber.dispatch, this.delay, {
source: this, destination: this.destination, scheduler: scheduler
}));
}
scheduleNotification(notification) {
if (this.errored === true) {
return;
}
const scheduler = this.scheduler;
const message = new DelayMessage(scheduler.now() + this.delay, notification);
this.queue.push(message);
if (this.active === false) {
this._schedule(scheduler);
}
}
_next(value) {
this.scheduleNotification(Notification.createNext(value));
}
_error(err) {
this.errored = true;
this.queue = [];
this.destination.error(err);
}
_complete() {
this.scheduleNotification(Notification.createComplete());
}
}
class DelayMessage {
constructor(time, notification) {
this.time = time;
this.notification = notification;
}
}
//# sourceMappingURL=delay.js.map
|
