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更新Demo

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更新Demo
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ALEXTANG
2023-12-20 12:14:27 +08:00
parent f64bb37706
commit 17a5d7425c
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240
UnityProject/Packages/UniTask/Runtime/Linq/Last.cs Normal file
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using Cysharp.Threading.Tasks.Internal;
using System;
using System.Threading;
namespace Cysharp.Threading.Tasks.Linq
{
public static partial class UniTaskAsyncEnumerable
{
public static UniTask<TSource> LastAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
return Last.LastAsync(source, cancellationToken, false);
}
public static UniTask<TSource> LastAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, Boolean> predicate, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
Error.ThrowArgumentNullException(predicate, nameof(predicate));
return Last.LastAsync(source, predicate, cancellationToken, false);
}
public static UniTask<TSource> LastAwaitAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTask<Boolean>> predicate, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
Error.ThrowArgumentNullException(predicate, nameof(predicate));
return Last.LastAwaitAsync(source, predicate, cancellationToken, false);
}
public static UniTask<TSource> LastAwaitWithCancellationAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, UniTask<Boolean>> predicate, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
Error.ThrowArgumentNullException(predicate, nameof(predicate));
return Last.LastAwaitWithCancellationAsync(source, predicate, cancellationToken, false);
}
public static UniTask<TSource> LastOrDefaultAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
return Last.LastAsync(source, cancellationToken, true);
}
public static UniTask<TSource> LastOrDefaultAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, Boolean> predicate, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
Error.ThrowArgumentNullException(predicate, nameof(predicate));
return Last.LastAsync(source, predicate, cancellationToken, true);
}
public static UniTask<TSource> LastOrDefaultAwaitAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTask<Boolean>> predicate, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
Error.ThrowArgumentNullException(predicate, nameof(predicate));
return Last.LastAwaitAsync(source, predicate, cancellationToken, true);
}
public static UniTask<TSource> LastOrDefaultAwaitWithCancellationAsync<TSource>(this IUniTaskAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, UniTask<Boolean>> predicate, CancellationToken cancellationToken = default)
{
Error.ThrowArgumentNullException(source, nameof(source));
Error.ThrowArgumentNullException(predicate, nameof(predicate));
return Last.LastAwaitWithCancellationAsync(source, predicate, cancellationToken, true);
}
}
internal static class Last
{
public static async UniTask<TSource> LastAsync<TSource>(IUniTaskAsyncEnumerable<TSource> source, CancellationToken cancellationToken, bool defaultIfEmpty)
{
var e = source.GetAsyncEnumerator(cancellationToken);
try
{
TSource value = default;
if (await e.MoveNextAsync())
{
value = e.Current;
}
else
{
if (defaultIfEmpty)
{
return value;
}
else
{
throw Error.NoElements();
}
}
while (await e.MoveNextAsync())
{
value = e.Current;
}
return value;
}
finally
{
if (e != null)
{
await e.DisposeAsync();
}
}
}
public static async UniTask<TSource> LastAsync<TSource>(IUniTaskAsyncEnumerable<TSource> source, Func<TSource, Boolean> predicate, CancellationToken cancellationToken, bool defaultIfEmpty)
{
var e = source.GetAsyncEnumerator(cancellationToken);
try
{
TSource value = default;
bool found = false;
while (await e.MoveNextAsync())
{
var v = e.Current;
if (predicate(v))
{
found = true;
value = v;
}
}
if (defaultIfEmpty)
{
return value;
}
else
{
if (found)
{
return value;
}
else
{
throw Error.NoElements();
}
}
}
finally
{
if (e != null)
{
await e.DisposeAsync();
}
}
}
public static async UniTask<TSource> LastAwaitAsync<TSource>(IUniTaskAsyncEnumerable<TSource> source, Func<TSource, UniTask<Boolean>> predicate, CancellationToken cancellationToken, bool defaultIfEmpty)
{
var e = source.GetAsyncEnumerator(cancellationToken);
try
{
TSource value = default;
bool found = false;
while (await e.MoveNextAsync())
{
var v = e.Current;
if (await predicate(v))
{
found = true;
value = v;
}
}
if (defaultIfEmpty)
{
return value;
}
else
{
if (found)
{
return value;
}
else
{
throw Error.NoElements();
}
}
}
finally
{
if (e != null)
{
await e.DisposeAsync();
}
}
}
public static async UniTask<TSource> LastAwaitWithCancellationAsync<TSource>(IUniTaskAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, UniTask<Boolean>> predicate, CancellationToken cancellationToken, bool defaultIfEmpty)
{
var e = source.GetAsyncEnumerator(cancellationToken);
try
{
TSource value = default;
bool found = false;
while (await e.MoveNextAsync())
{
var v = e.Current;
if (await predicate(v, cancellationToken))
{
found = true;
value = v;
}
}
if (defaultIfEmpty)
{
return value;
}
else
{
if (found)
{
return value;
}
else
{
throw Error.NoElements();
}
}
}
finally
{
if (e != null)
{
await e.DisposeAsync();
}
}
}
}
}