52 lines
1.7 KiB
C#
52 lines
1.7 KiB
C#
// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT License.
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// See the LICENSE file in the project root for more information.
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using System.Reactive.Concurrency;
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namespace System.Reactive.Linq.ObservableImpl
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{
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internal sealed class TimeInterval<TSource> : Producer<Reactive.TimeInterval<TSource>, TimeInterval<TSource>._>
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{
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private readonly IObservable<TSource> _source;
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private readonly IScheduler _scheduler;
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public TimeInterval(IObservable<TSource> source, IScheduler scheduler)
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{
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_source = source;
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_scheduler = scheduler;
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}
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protected override _ CreateSink(IObserver<Reactive.TimeInterval<TSource>> observer) => new(observer);
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protected override void Run(_ sink) => sink.Run(this);
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internal sealed class _ : Sink<TSource, Reactive.TimeInterval<TSource>>
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{
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public _(IObserver<Reactive.TimeInterval<TSource>> observer)
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: base(observer)
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{
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}
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private IStopwatch? _watch;
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private TimeSpan _last;
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public void Run(TimeInterval<TSource> parent)
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{
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_watch = parent._scheduler.StartStopwatch();
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_last = TimeSpan.Zero;
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SetUpstream(parent._source.Subscribe(this));
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}
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public override void OnNext(TSource value)
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{
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var now = _watch!.Elapsed; // NB: Watch is assigned during Run.
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var span = now.Subtract(_last);
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_last = now;
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ForwardOnNext(new Reactive.TimeInterval<TSource>(value, span));
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}
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}
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}
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}
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