107 lines
3.2 KiB
C#
107 lines
3.2 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
|
|
// The .NET Foundation licenses this file to you under the MIT License.
|
|
// See the LICENSE file in the project root for more information.
|
|
|
|
namespace System.Reactive.Linq.ObservableImpl
|
|
{
|
|
internal static class LongCount<TSource>
|
|
{
|
|
internal sealed class All : Producer<long, All._>
|
|
{
|
|
private readonly IObservable<TSource> _source;
|
|
|
|
public All(IObservable<TSource> source)
|
|
{
|
|
_source = source;
|
|
}
|
|
|
|
protected override _ CreateSink(IObserver<long> observer) => new(observer);
|
|
|
|
protected override void Run(_ sink) => sink.Run(_source);
|
|
|
|
internal sealed class _ : Sink<TSource, long>
|
|
{
|
|
private long _count;
|
|
|
|
public _(IObserver<long> observer)
|
|
: base(observer)
|
|
{
|
|
}
|
|
|
|
public override void OnNext(TSource value)
|
|
{
|
|
try
|
|
{
|
|
checked
|
|
{
|
|
_count++;
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
ForwardOnError(ex);
|
|
}
|
|
}
|
|
|
|
public override void OnCompleted()
|
|
{
|
|
ForwardOnNext(_count);
|
|
ForwardOnCompleted();
|
|
}
|
|
}
|
|
}
|
|
|
|
internal sealed class Predicate : Producer<long, Predicate._>
|
|
{
|
|
private readonly IObservable<TSource> _source;
|
|
private readonly Func<TSource, bool> _predicate;
|
|
|
|
public Predicate(IObservable<TSource> source, Func<TSource, bool> predicate)
|
|
{
|
|
_source = source;
|
|
_predicate = predicate;
|
|
}
|
|
|
|
protected override _ CreateSink(IObserver<long> observer) => new(_predicate, observer);
|
|
|
|
protected override void Run(_ sink) => sink.Run(_source);
|
|
|
|
internal sealed class _ : Sink<TSource, long>
|
|
{
|
|
private readonly Func<TSource, bool> _predicate;
|
|
private long _count;
|
|
|
|
public _(Func<TSource, bool> predicate, IObserver<long> observer)
|
|
: base(observer)
|
|
{
|
|
_predicate = predicate;
|
|
}
|
|
|
|
public override void OnNext(TSource value)
|
|
{
|
|
try
|
|
{
|
|
checked
|
|
{
|
|
if (_predicate(value))
|
|
{
|
|
_count++;
|
|
}
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
ForwardOnError(ex);
|
|
}
|
|
}
|
|
|
|
public override void OnCompleted()
|
|
{
|
|
ForwardOnNext(_count);
|
|
ForwardOnCompleted();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|