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neuecc
2020-05-11 02:29:23 +09:00
parent 4d13523df7
commit c0da316cb4
2 changed files with 409 additions and 77 deletions
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321
src/UniTask.NetCore/Linq/Zip.cs
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@@ -1,4 +1,5 @@
using System;
using Cysharp.Threading.Tasks.Internal;
using System;
using System.Threading;
namespace Cysharp.Threading.Tasks.Linq
@@ -8,12 +9,37 @@ namespace Cysharp.Threading.Tasks.Linq
public static IUniTaskAsyncEnumerable<(TFirst First, TSecond Second)> Zip<TFirst, TSecond>(this IUniTaskAsyncEnumerable<TFirst> first, IUniTaskAsyncEnumerable<TSecond> second)
{
Error.ThrowArgumentNullException(first, nameof(first));
Error.ThrowArgumentNullException(second, nameof(second));
return Zip(first, second, (x, y) => (x, y));
}
public static IUniTaskAsyncEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IUniTaskAsyncEnumerable<TFirst> first, IUniTaskAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, TResult> resultSelector)
{
return new Cysharp.Threading.Tasks.Linq.Zip<TFirst, TSecond, TResult>(first, second, resultSelector);
Error.ThrowArgumentNullException(first, nameof(first));
Error.ThrowArgumentNullException(second, nameof(second));
Error.ThrowArgumentNullException(resultSelector, nameof(resultSelector));
return new Zip<TFirst, TSecond, TResult>(first, second, resultSelector);
}
public static IUniTaskAsyncEnumerable<TResult> ZipAwait<TFirst, TSecond, TResult>(this IUniTaskAsyncEnumerable<TFirst> first, IUniTaskAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, UniTask<TResult>> selector)
{
Error.ThrowArgumentNullException(first, nameof(first));
Error.ThrowArgumentNullException(second, nameof(second));
Error.ThrowArgumentNullException(selector, nameof(selector));
return new ZipAwait<TFirst, TSecond, TResult>(first, second, selector);
}
public static IUniTaskAsyncEnumerable<TResult> ZipAwaitWithCancellation<TFirst, TSecond, TResult>(this IUniTaskAsyncEnumerable<TFirst> first, IUniTaskAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, UniTask<TResult>> selector)
{
Error.ThrowArgumentNullException(first, nameof(first));
Error.ThrowArgumentNullException(second, nameof(second));
Error.ThrowArgumentNullException(selector, nameof(selector));
return new ZipAwaitWithCancellation<TFirst, TSecond, TResult>(first, second, selector);
}
}
@@ -124,30 +150,33 @@ namespace Cysharp.Threading.Tasks.Linq
{
var self = (Enumerator)state;
if (self.secondAwaiter.GetResult())
if (self.TryGetResult(self.secondAwaiter, out var result))
{
try
if (result)
{
self.Current = self.resultSelector(self.firstEnumerator.Current, self.secondEnumerator.Current);
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
}
try
{
self.Current = self.resultSelector(self.firstEnumerator.Current, self.secondEnumerator.Current);
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
}
if (self.cancellationToken.IsCancellationRequested)
{
self.completionSource.TrySetCanceled(self.cancellationToken);
if (self.cancellationToken.IsCancellationRequested)
{
self.completionSource.TrySetCanceled(self.cancellationToken);
}
else
{
self.completionSource.TrySetResult(true);
}
}
else
{
self.completionSource.TrySetResult(true);
self.completionSource.TrySetResult(false);
}
}
else
{
self.completionSource.TrySetResult(false);
}
}
public async UniTask DisposeAsync()
@@ -186,7 +215,7 @@ namespace Cysharp.Threading.Tasks.Linq
{
static readonly Action<object> firstMoveNextCoreDelegate = FirstMoveNextCore;
static readonly Action<object> secondMoveNextCoreDelegate = SecondMoveNextCore;
static readonly Action<object> unwrapResultTaskDelegate = UnwrapResultTask;
static readonly Action<object> resultAwaitCoreDelegate = ResultAwaitCore;
readonly IUniTaskAsyncEnumerable<TFirst> first;
readonly IUniTaskAsyncEnumerable<TSecond> second;
@@ -239,67 +268,84 @@ namespace Cysharp.Threading.Tasks.Linq
{
var self = (Enumerator)state;
if (self.firstAwaiter.GetResult())
if (self.TryGetResult(self.firstAwaiter, out var result))
{
self.secondAwaiter = self.secondEnumerator.MoveNextAsync().GetAwaiter();
if (self.secondAwaiter.IsCompleted)
if (result)
{
SecondMoveNextCore(self);
try
{
self.secondAwaiter = self.secondEnumerator.MoveNextAsync().GetAwaiter();
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
return;
}
if (self.secondAwaiter.IsCompleted)
{
SecondMoveNextCore(self);
}
else
{
self.secondAwaiter.SourceOnCompleted(secondMoveNextCoreDelegate, self);
}
}
else
{
self.secondAwaiter.SourceOnCompleted(secondMoveNextCoreDelegate, self);
self.completionSource.TrySetResult(false);
}
}
else
{
self.completionSource.TrySetResult(false);
}
}
static void SecondMoveNextCore(object state)
{
var self = (Enumerator)state;
if (self.secondAwaiter.GetResult())
if (self.TryGetResult(self.secondAwaiter, out var result))
{
var task = self.resultSelector(self.firstEnumerator.Current, self.secondEnumerator.Current);
self.resultAwaiter = task.GetAwaiter();
if (self.resultAwaiter.IsCompleted)
if (result)
{
UnwrapResultTask(self);
try
{
self.resultAwaiter = self.resultSelector(self.firstEnumerator.Current, self.secondEnumerator.Current).GetAwaiter();
if (self.resultAwaiter.IsCompleted)
{
ResultAwaitCore(self);
}
else
{
self.resultAwaiter.SourceOnCompleted(resultAwaitCoreDelegate, self);
}
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
}
}
else
{
self.resultAwaiter.SourceOnCompleted(unwrapResultTaskDelegate, self);
self.completionSource.TrySetResult(false);
}
}
else
{
self.completionSource.TrySetResult(false);
}
}
static void UnwrapResultTask(object state)
static void ResultAwaitCore(object state)
{
var self = (Enumerator)state;
try
if (self.TryGetResult(self.resultAwaiter, out var result))
{
self.Current = self.resultAwaiter.GetResult();
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
}
self.Current = result;
if (self.cancellationToken.IsCancellationRequested)
{
self.completionSource.TrySetCanceled(self.cancellationToken);
}
else
{
self.completionSource.TrySetResult(true);
if (self.cancellationToken.IsCancellationRequested)
{
self.completionSource.TrySetCanceled(self.cancellationToken);
}
else
{
self.completionSource.TrySetResult(true);
}
}
}
@@ -317,4 +363,173 @@ namespace Cysharp.Threading.Tasks.Linq
}
}
internal sealed class ZipAwaitWithCancellation<TFirst, TSecond, TResult> : IUniTaskAsyncEnumerable<TResult>
{
readonly IUniTaskAsyncEnumerable<TFirst> first;
readonly IUniTaskAsyncEnumerable<TSecond> second;
readonly Func<TFirst, TSecond, CancellationToken, UniTask<TResult>> resultSelector;
public ZipAwaitWithCancellation(IUniTaskAsyncEnumerable<TFirst> first, IUniTaskAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, UniTask<TResult>> resultSelector)
{
this.first = first;
this.second = second;
this.resultSelector = resultSelector;
}
public IUniTaskAsyncEnumerator<TResult> GetAsyncEnumerator(CancellationToken cancellationToken = default)
{
return new Enumerator(first, second, resultSelector, cancellationToken);
}
sealed class Enumerator : MoveNextSource, IUniTaskAsyncEnumerator<TResult>
{
static readonly Action<object> firstMoveNextCoreDelegate = FirstMoveNextCore;
static readonly Action<object> secondMoveNextCoreDelegate = SecondMoveNextCore;
static readonly Action<object> resultAwaitCoreDelegate = ResultAwaitCore;
readonly IUniTaskAsyncEnumerable<TFirst> first;
readonly IUniTaskAsyncEnumerable<TSecond> second;
readonly Func<TFirst, TSecond, CancellationToken, UniTask<TResult>> resultSelector;
CancellationToken cancellationToken;
IUniTaskAsyncEnumerator<TFirst> firstEnumerator;
IUniTaskAsyncEnumerator<TSecond> secondEnumerator;
UniTask<bool>.Awaiter firstAwaiter;
UniTask<bool>.Awaiter secondAwaiter;
UniTask<TResult>.Awaiter resultAwaiter;
public Enumerator(IUniTaskAsyncEnumerable<TFirst> first, IUniTaskAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, UniTask<TResult>> resultSelector, CancellationToken cancellationToken)
{
this.first = first;
this.second = second;
this.resultSelector = resultSelector;
this.cancellationToken = cancellationToken;
}
public TResult Current { get; private set; }
public UniTask<bool> MoveNextAsync()
{
completionSource.Reset();
if (firstEnumerator == null)
{
firstEnumerator = first.GetAsyncEnumerator(cancellationToken);
secondEnumerator = second.GetAsyncEnumerator(cancellationToken);
}
firstAwaiter = firstEnumerator.MoveNextAsync().GetAwaiter();
if (firstAwaiter.IsCompleted)
{
FirstMoveNextCore(this);
}
else
{
firstAwaiter.SourceOnCompleted(firstMoveNextCoreDelegate, this);
}
return new UniTask<bool>(this, completionSource.Version);
}
static void FirstMoveNextCore(object state)
{
var self = (Enumerator)state;
if (self.TryGetResult(self.firstAwaiter, out var result))
{
if (result)
{
try
{
self.secondAwaiter = self.secondEnumerator.MoveNextAsync().GetAwaiter();
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
return;
}
if (self.secondAwaiter.IsCompleted)
{
SecondMoveNextCore(self);
}
else
{
self.secondAwaiter.SourceOnCompleted(secondMoveNextCoreDelegate, self);
}
}
else
{
self.completionSource.TrySetResult(false);
}
}
}
static void SecondMoveNextCore(object state)
{
var self = (Enumerator)state;
if (self.TryGetResult(self.secondAwaiter, out var result))
{
if (result)
{
try
{
self.resultAwaiter = self.resultSelector(self.firstEnumerator.Current, self.secondEnumerator.Current, self.cancellationToken).GetAwaiter();
if (self.resultAwaiter.IsCompleted)
{
ResultAwaitCore(self);
}
else
{
self.resultAwaiter.SourceOnCompleted(resultAwaitCoreDelegate, self);
}
}
catch (Exception ex)
{
self.completionSource.TrySetException(ex);
}
}
else
{
self.completionSource.TrySetResult(false);
}
}
}
static void ResultAwaitCore(object state)
{
var self = (Enumerator)state;
if (self.TryGetResult(self.resultAwaiter, out var result))
{
self.Current = result;
if (self.cancellationToken.IsCancellationRequested)
{
self.completionSource.TrySetCanceled(self.cancellationToken);
}
else
{
self.completionSource.TrySetResult(true);
}
}
}
public async UniTask DisposeAsync()
{
if (firstEnumerator != null)
{
await firstEnumerator.DisposeAsync();
}
if (secondEnumerator != null)
{
await secondEnumerator.DisposeAsync();
}
}
}
}
}