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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
#if !NO_PERF
using System;
using System.Collections.Generic;
using System.Reactive.Concurrency;
using System.Reactive.Disposables;
namespace System.Reactive.Linq.ObservableImpl
{
class OnErrorResumeNext<TSource> : Producer<TSource>
{
private readonly IEnumerable<IObservable<TSource>> _sources;
public OnErrorResumeNext(IEnumerable<IObservable<TSource>> sources)
{
_sources = sources;
}
protected override IDisposable Run(IObserver<TSource> observer, IDisposable cancel, Action<IDisposable> setSink)
{
var sink = new _(observer, cancel);
setSink(sink);
return sink.Run(_sources);
}
class _ : TailRecursiveSink<TSource>
{
public _(IObserver<TSource> observer, IDisposable cancel)
: base(observer, cancel)
{
}
protected override IEnumerable<IObservable<TSource>> Extract(IObservable<TSource> source)
{
var oern = source as OnErrorResumeNext<TSource>;
if (oern != null)
return oern._sources;
return null;
}
public override void OnNext(TSource value)
{
base._observer.OnNext(value);
}
public override void OnError(Exception error)
{
_recurse();
}
public override void OnCompleted()
{
_recurse();
}
}
}
}
#endif
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