using System.Runtime.CompilerServices; namespace System.Reactive.Linq.ObservableImpl { [System.Runtime.CompilerServices.NullableContext(1)] [System.Runtime.CompilerServices.Nullable(new byte[] { 0, 1 })] internal sealed class AverageDecimal : Producer<decimal, AverageDecimal._> { [System.Runtime.CompilerServices.NullableContext(0)] internal sealed class _ : IdentitySink<decimal> { private decimal _sum; private long _count; [System.Runtime.CompilerServices.NullableContext(1)] public _(IObserver<decimal> observer) : base(observer) { _sum = default(decimal); _count = 0; } public override void OnNext(decimal value) { checked { try { _sum += value; _count++; } catch (Exception error) { ForwardOnError(error); } } } public override void OnCompleted() { if (_count <= 0) try { throw new InvalidOperationException(Strings_Linq.NO_ELEMENTS); } catch (Exception error) { ForwardOnError(error); } else { ForwardOnNext(_sum / (decimal)_count); ForwardOnCompleted(); } } } private readonly IObservable<decimal> _source; public AverageDecimal(IObservable<decimal> source) { _source = source; } protected override _ CreateSink(IObserver<decimal> observer) { return new _(observer); } protected override void Run(_ sink) { sink.Run(_source); } } }