69 lines
2.4 KiB
C#
69 lines
2.4 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.Disposables;
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using System.Reactive.Subjects;
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namespace System.Reactive.Linq.ObservableImpl
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{
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internal sealed class Multicast<TSource, TIntermediate, TResult> : Producer<TResult, Multicast<TSource, TIntermediate, TResult>._>
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{
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private readonly IObservable<TSource> _source;
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private readonly Func<ISubject<TSource, TIntermediate>> _subjectSelector;
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private readonly Func<IObservable<TIntermediate>, IObservable<TResult>> _selector;
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public Multicast(IObservable<TSource> source, Func<ISubject<TSource, TIntermediate>> subjectSelector, Func<IObservable<TIntermediate>, IObservable<TResult>> selector)
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{
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_source = source;
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_subjectSelector = subjectSelector;
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_selector = selector;
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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(this);
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internal sealed class _ : IdentitySink<TResult>
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{
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private SingleAssignmentDisposableValue _connection;
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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(Multicast<TSource, TIntermediate, TResult> parent)
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{
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IObservable<TResult> observable;
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IConnectableObservable<TIntermediate> connectable;
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try
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{
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var subject = parent._subjectSelector();
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connectable = new ConnectableObservable<TSource, TIntermediate>(parent._source, subject);
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observable = parent._selector(connectable);
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}
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catch (Exception exception)
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{
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ForwardOnError(exception);
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return;
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}
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Run(observable);
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_connection.Disposable = connectable.Connect();
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}
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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_connection.Dispose();
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}
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base.Dispose(disposing);
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}
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}
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}
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}
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