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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
using System;
namespace System.Reactive
{
//
// See AutoDetachObserver.cs for more information on the safeguarding requirement and
// its implementation aspects.
//
class SafeObserver<TSource> : IObserver<TSource>
{
private readonly IObserver<TSource> _observer;
private readonly IDisposable _disposable;
public static IObserver<TSource> Create(IObserver<TSource> observer, IDisposable disposable)
{
var a = observer as AnonymousObserver<TSource>;
if (a != null)
return a.MakeSafe(disposable);
else
return new SafeObserver<TSource>(observer, disposable);
}
private SafeObserver(IObserver<TSource> observer, IDisposable disposable)
{
_observer = observer;
_disposable = disposable;
}
public void OnNext(TSource value)
{
var __noError = false;
try
{
_observer.OnNext(value);
__noError = true;
}
finally
{
if (!__noError)
_disposable.Dispose();
}
}
public void OnError(Exception error)
{
try
{
_observer.OnError(error);
}
finally
{
_disposable.Dispose();
}
}
public void OnCompleted()
{
try
{
_observer.OnCompleted();
}
finally
{
_disposable.Dispose();
}
}
}
}
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