namespace System.Reactive.Linq.ObservableImpl { internal static class Any<TSource> { internal sealed class Count : Producer<bool, Count._> { internal sealed class _ : Sink<TSource, bool> { public _(IObserver<bool> observer) : base(observer) { } public override void OnNext(TSource value) { ForwardOnNext(true); ForwardOnCompleted(); } public override void OnCompleted() { ForwardOnNext(false); ForwardOnCompleted(); } } private readonly IObservable<TSource> _source; public Count(IObservable<TSource> source) { _source = source; } protected override _ CreateSink(IObserver<bool> observer) { return new _(observer); } protected override void Run(_ sink) { sink.Run(_source); } } internal sealed class Predicate : Producer<bool, Predicate._> { internal sealed class _ : Sink<TSource, bool> { private readonly Func<TSource, bool> _predicate; public _(Func<TSource, bool> predicate, IObserver<bool> observer) : base(observer) { _predicate = predicate; } public override void OnNext(TSource value) { bool flag = false; try { flag = _predicate(value); } catch (Exception error) { ForwardOnError(error); return; } if (flag) { ForwardOnNext(true); ForwardOnCompleted(); } } public override void OnCompleted() { ForwardOnNext(false); ForwardOnCompleted(); } } private readonly IObservable<TSource> _source; private readonly Func<TSource, bool> _predicate; public Predicate(IObservable<TSource> source, Func<TSource, bool> predicate) { _source = source; _predicate = predicate; } protected override _ CreateSink(IObserver<bool> observer) { return new _(_predicate, observer); } protected override void Run(_ sink) { sink.Run(_source); } } } }