using System.Collections.Generic; namespace System.Reactive.Linq.ObservableImpl { internal sealed class OnErrorResumeNext<TSource> : Producer<TSource, OnErrorResumeNext<TSource>._> { internal sealed class _ : TailRecursiveSink<TSource> { public _(IObserver<TSource> observer) : base(observer) { } protected override IEnumerable<IObservable<TSource>> Extract(IObservable<TSource> source) { OnErrorResumeNext<TSource> onErrorResumeNext; if ((onErrorResumeNext = (source as OnErrorResumeNext<TSource>)) != null) return onErrorResumeNext._sources; return null; } public override void OnError(Exception error) { Recurse(); } public override void OnCompleted() { Recurse(); } protected override bool Fail(Exception error) { OnError(error); return true; } } private readonly IEnumerable<IObservable<TSource>> _sources; public OnErrorResumeNext(IEnumerable<IObservable<TSource>> sources) { _sources = sources; } protected override _ CreateSink(IObserver<TSource> observer) { return new _(observer); } protected override void Run(_ sink) { sink.Run(_sources); } } }