Kit.Core/LibExternal/System.Reactive/Linq/Observable/For.cs

41 lines
1.3 KiB
C#

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT License.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
namespace System.Reactive.Linq.ObservableImpl
{
internal sealed class For<TSource, TResult> : Producer<TResult, For<TSource, TResult>._>, IConcatenatable<TResult>
{
private readonly IEnumerable<TSource> _source;
private readonly Func<TSource, IObservable<TResult>> _resultSelector;
public For(IEnumerable<TSource> source, Func<TSource, IObservable<TResult>> resultSelector)
{
_source = source;
_resultSelector = resultSelector;
}
protected override _ CreateSink(IObserver<TResult> observer) => new(observer);
protected override void Run(_ sink) => sink.Run(GetSources());
public IEnumerable<IObservable<TResult>> GetSources()
{
foreach (var item in _source)
{
yield return _resultSelector(item);
}
}
internal sealed class _ : ConcatSink<TResult>
{
public _(IObserver<TResult> observer)
: base(observer)
{
}
}
}
}