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CrowdControl/Assets/Plugins/UniTask/Runtime/Linq/Throw.cs

54 lines
1.5 KiB
C#

using Cysharp.Threading.Tasks.Internal;
using System;
using System.Threading;
namespace Cysharp.Threading.Tasks.Linq
{
public static partial class UniTaskAsyncEnumerable
{
public static IUniTaskAsyncEnumerable<TValue> Throw<TValue>(Exception exception)
{
return new Throw<TValue>(exception);
}
}
internal class Throw<TValue> : IUniTaskAsyncEnumerable<TValue>
{
readonly Exception exception;
public Throw(Exception exception)
{
this.exception = exception;
}
public IUniTaskAsyncEnumerator<TValue> GetAsyncEnumerator(CancellationToken cancellationToken = default)
{
return new _Throw(exception, cancellationToken);
}
class _Throw : IUniTaskAsyncEnumerator<TValue>
{
readonly Exception exception;
CancellationToken cancellationToken;
public _Throw(Exception exception, CancellationToken cancellationToken)
{
this.exception = exception;
this.cancellationToken = cancellationToken;
}
public TValue Current => default;
public UniTask<bool> MoveNextAsync()
{
cancellationToken.ThrowIfCancellationRequested();
return UniTask.FromException<bool>(exception);
}
public UniTask DisposeAsync()
{
return default;
}
}
}
}