blob: 674c6f8ecb23cf95cdc8761cfbf6e6591eff187b (
plain)
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
|
// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if !NO_PERF
using System;
namespace System.Reactive.Linq.Observαble
{
class IsEmpty<TSource> : Producer<bool>
{
private readonly IObservable<TSource> _source;
public IsEmpty(IObservable<TSource> source)
{
_source = source;
}
protected override IDisposable Run(IObserver<bool> observer, IDisposable cancel, Action<IDisposable> setSink)
{
var sink = new _(observer, cancel);
setSink(sink);
return _source.SubscribeSafe(sink);
}
class _ : Sink<bool>, IObserver<TSource>
{
public _(IObserver<bool> observer, IDisposable cancel)
: base(observer, cancel)
{
}
public void OnNext(TSource value)
{
base._observer.OnNext(false);
base._observer.OnCompleted();
base.Dispose();
}
public void OnError(Exception error)
{
base._observer.OnError(error);
base.Dispose();
}
public void OnCompleted()
{
base._observer.OnNext(true);
base._observer.OnCompleted();
base.Dispose();
}
}
}
}
#endif
|