50 lines
1.4 KiB
C#
50 lines
1.4 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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using System.Reactive.Disposables;
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namespace System.Reactive.Linq.ObservableImpl
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{
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internal sealed class Empty<TResult> : Producer<TResult, Empty<TResult>._>
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{
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private readonly IScheduler _scheduler;
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public Empty(IScheduler scheduler)
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{
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_scheduler = scheduler;
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}
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protected override _ CreateSink(IObserver<TResult> observer) => new(observer);
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protected override void Run(_ sink) => sink.Run(_scheduler);
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internal sealed class _ : IdentitySink<TResult>
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{
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public _(IObserver<TResult> observer)
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: base(observer)
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{
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}
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public void Run(IScheduler scheduler)
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{
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SetUpstream(scheduler.ScheduleAction(this, static target => target.OnCompleted()));
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}
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}
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}
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internal sealed class EmptyDirect<TResult> : BasicProducer<TResult>
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{
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internal static readonly IObservable<TResult> Instance = new EmptyDirect<TResult>();
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private EmptyDirect() { }
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protected override IDisposable Run(IObserver<TResult> observer)
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{
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observer.OnCompleted();
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return Disposable.Empty;
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}
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}
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}
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