using System.Reactive.Concurrency; using System.Reactive.Disposables; using System.Runtime.CompilerServices; namespace System.Reactive.Linq.ObservableImpl { [System.Runtime.CompilerServices.NullableContext(1)] [System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1, 1, 1 })] internal sealed class SkipUntil<[System.Runtime.CompilerServices.Nullable(2)] TSource> : Producer<TSource, SkipUntil<TSource>._> { [System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1 })] internal sealed class _ : IdentitySink<TSource> { private bool _open; private SingleAssignmentDisposableValue _task; public _(IObserver<TSource> observer) : base(observer) { } public void Run(SkipUntil<TSource> parent) { _task.Disposable = Scheduler.ScheduleAction<_>(parent._scheduler, this, parent._startTime, (Action<_>)delegate(_ state) { state.Tick(); }); Run(parent._source); } protected override void Dispose(bool disposing) { if (disposing) _task.Dispose(); base.Dispose(disposing); } private void Tick() { _open = true; } public override void OnNext(TSource value) { if (_open) ForwardOnNext(value); } } private readonly IObservable<TSource> _source; private readonly DateTimeOffset _startTime; internal readonly IScheduler _scheduler; public SkipUntil(IObservable<TSource> source, DateTimeOffset startTime, IScheduler scheduler) { _source = source; _startTime = startTime; _scheduler = scheduler; } public IObservable<TSource> Combine(DateTimeOffset startTime) { if (startTime <= _startTime) return this; return new SkipUntil<TSource>(_source, startTime, _scheduler); } [return: System.Runtime.CompilerServices.Nullable(new byte[] { 1, 0 })] protected override _ CreateSink(IObserver<TSource> observer) { return new _(observer); } protected override void Run([System.Runtime.CompilerServices.Nullable(new byte[] { 1, 0 })] _ sink) { sink.Run(this); } } }