79 lines
1.9 KiB
C#
79 lines
1.9 KiB
C#
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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
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#if NO_CDS || NO_PERF
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using System.Collections.Generic;
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namespace System.Reactive
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{
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sealed class PushPullAdapter<T, R> : IObserver<T>, IEnumerator<R>
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{
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Action<Notification<T>> yield;
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Action dispose;
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Func<Notification<R>> moveNext;
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Notification<R> current;
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bool done = false;
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bool disposed;
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public PushPullAdapter(Action<Notification<T>> yield, Func<Notification<R>> moveNext, Action dispose)
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{
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this.yield = yield;
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this.moveNext = moveNext;
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this.dispose = dispose;
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}
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public void OnNext(T value)
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{
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yield(Notification.CreateOnNext<T>(value));
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}
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public void OnError(Exception exception)
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{
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yield(Notification.CreateOnError<T>(exception));
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dispose();
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}
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public void OnCompleted()
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{
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yield(Notification.CreateOnCompleted<T>());
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dispose();
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}
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public R Current
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{
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get { return current.Value; }
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}
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public void Dispose()
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{
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disposed = true;
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dispose();
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}
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object System.Collections.IEnumerator.Current
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{
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get { return this.Current; }
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}
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public bool MoveNext()
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{
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if (disposed)
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throw new ObjectDisposedException("");
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if (!done)
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{
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current = moveNext();
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done = current.Kind != NotificationKind.OnNext;
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}
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current.Exception.ThrowIfNotNull();
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return current.HasValue;
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}
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public void Reset()
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{
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throw new NotSupportedException();
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}
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}
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}
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#endif
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