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Add CombineLatest

pull/61/head
neuecc 2020-05-22 02:25:36 +09:00
parent 21dc83c641
commit 2b87cadba3
7 changed files with 10802 additions and 2 deletions
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10
src/UniTask.NetCoreSandbox/Program.cs
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@ -93,10 +93,16 @@ namespace NetCoreSandbox
var channel = Channel.CreateSingleConsumerUnbounded<int>();
// Observable.Range(1,10).CombineLatest(
var cts = new CancellationTokenSource();
var token = cts.Token;
FooAsync(token).ForEachAsync(x => { }, token);
// Observable.Range(1,10).CombineLatest(
}

81
src/UniTask.NetCoreTests/Linq/Projection.cs
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@ -319,5 +319,86 @@ namespace NetCoreTests.Linq
await Assert.ThrowsAsync<UniTaskTestException>(async () => await ys);
}
}
[Fact]
public async Task CombineLatestOK()
{
var a = new AsyncReactiveProperty<int>(0);
var b = new AsyncReactiveProperty<int>(0);
var list = new List<(int, int)>();
var complete = a.WithoutCurrent().CombineLatest(b.WithoutCurrent(), (x, y) => (x, y)).ForEachAsync(x => list.Add(x));
list.Count.Should().Be(0);
a.Value = 10;
list.Count.Should().Be(0);
a.Value = 20;
list.Count.Should().Be(0);
b.Value = 1;
list.Count.Should().Be(1);
list[0].Should().Be((20, 1));
a.Value = 30;
list.Last().Should().Be((30, 1));
b.Value = 2;
list.Last().Should().Be((30, 2));
a.Dispose();
b.Value = 3;
list.Last().Should().Be((30, 3));
b.Dispose();
await complete;
}
[Fact]
public async Task CombineLatestLong()
{
var a = UniTaskAsyncEnumerable.Range(1, 100000);
var b = new AsyncReactiveProperty<int>(0);
var list = new List<(int, int)>();
var complete = a.CombineLatest(b.WithoutCurrent(), (x, y) => (x, y)).ForEachAsync(x => list.Add(x));
b.Value = 1;
list[0].Should().Be((100000, 1));
b.Dispose();
await complete;
}
[Fact]
public async Task CombineLatestError()
{
var a = new AsyncReactiveProperty<int>(0);
var b = new AsyncReactiveProperty<int>(0);
var list = new List<(int, int)>();
var complete = a.WithoutCurrent()
.Select(x => { if (x == 0) { throw new MyException(); } return x; })
.CombineLatest(b.WithoutCurrent(), (x, y) => (x, y)).ForEachAsync(x => list.Add(x));
a.Value = 10;
b.Value = 1;
list.Last().Should().Be((10, 1));
a.Value = 0;
await Assert.ThrowsAsync<MyException>(async () => await complete);
}
class MyException : Exception
{
}
}
}

10481
src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/CombineLatest.cs Normal file
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11
src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/CombineLatest.cs.meta Normal file
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@ -0,0 +1,11 @@
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guid: 6cb07f6e88287e34d9b9301a572284a5
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212
src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/CombineLatest.tt Normal file
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@ -0,0 +1,212 @@
<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ output extension=".cs" #>
<#
var tMax = 15;
Func<int, string> typeArgs = x => string.Join(", ", Enumerable.Range(1, x).Select(x => $"T{x}")) + ", TResult";
Func<int, string> paramArgs = x => string.Join(", ", Enumerable.Range(1, x).Select(x => $"IUniTaskAsyncEnumerable<T{x}> source{x}"));
Func<int, string> parameters = x => string.Join(", ", Enumerable.Range(1, x).Select(x => $"source{x}"));
#>
using Cysharp.Threading.Tasks.Internal;
using System;
using System.Threading;
namespace Cysharp.Threading.Tasks.Linq
{
public static partial class UniTaskAsyncEnumerable
{
<# for(var i = 1; i <= tMax; i++) { #>
public static IUniTaskAsyncEnumerable<TResult> CombineLatest<<#= typeArgs(i) #>>(this <#= paramArgs(i) #>, Func<<#= typeArgs(i) #>> resultSelector)
{
<# for(var j = 1; j <= i; j++) { #>
Error.ThrowArgumentNullException(source<#= j #>, nameof(source<#= j #>));
<# } #>
Error.ThrowArgumentNullException(resultSelector, nameof(resultSelector));
return new CombineLatest<<#= typeArgs(i) #>>(<#= parameters(i) #>, resultSelector);
}
<# } #>
}
<# for(var i = 1; i <= tMax; i++) { #>
internal class CombineLatest<<#= typeArgs(i) #>> : IUniTaskAsyncEnumerable<TResult>
{
<# for(var j = 1; j <= i; j++) { #>
readonly IUniTaskAsyncEnumerable<T<#= j #>> source<#= j #>;
<# } #>
readonly Func<<#= typeArgs(i) #>> resultSelector;
public CombineLatest(<#= paramArgs(i) #>, Func<<#= typeArgs(i) #>> resultSelector)
{
<# for(var j = 1; j <= i; j++) { #>
this.source<#= j #> = source<#= j #>;
<# } #>
this.resultSelector = resultSelector;
}
public IUniTaskAsyncEnumerator<TResult> GetAsyncEnumerator(CancellationToken cancellationToken = default)
{
return new _CombineLatest(<#= parameters(i) #>, resultSelector, cancellationToken);
}
class _CombineLatest : MoveNextSource, IUniTaskAsyncEnumerator<TResult>
{
<# for(var j = 1; j <= i; j++) { #>
static readonly Action<object> Completed<#= j #>Delegate = Completed<#= j #>;
<# } #>
const int CompleteCount = <#= i #>;
<# for(var j = 1; j <= i; j++) { #>
readonly IUniTaskAsyncEnumerable<T<#= j #>> source<#= j #>;
<# } #>
readonly Func<<#= typeArgs(i) #>> resultSelector;
CancellationToken cancellationToken;
<# for(var j = 1; j <= i; j++) { #>
IUniTaskAsyncEnumerator<T<#= j #>> enumerator<#= j #>;
UniTask<bool>.Awaiter awaiter<#= j #>;
bool hasCurrent<#= j #>;
bool running<#= j #>;
T<#= j #> current<#= j #>;
<# } #>
int completedCount;
bool syncRunning;
TResult result;
public _CombineLatest(<#= paramArgs(i) #>, Func<<#= typeArgs(i) #>> resultSelector, CancellationToken cancellationToken)
{
<# for(var j = 1; j <= i; j++) { #>
this.source<#= j #> = source<#= j #>;
<# } #>
this.resultSelector = resultSelector;
this.cancellationToken = cancellationToken;
}
public TResult Current => result;
public UniTask<bool> MoveNextAsync()
{
cancellationToken.ThrowIfCancellationRequested();
if (completedCount == CompleteCount) return CompletedTasks.False;
if (enumerator1 == null)
{
<# for(var j = 1; j <= i; j++) { #>
enumerator<#= j #> = source<#= j #>.GetAsyncEnumerator(cancellationToken);
<# } #>
}
completionSource.Reset();
AGAIN:
syncRunning = true;
<# for(var j = 1; j <= i; j++) { #>
if (!running<#= j #>)
{
running<#= j #> = true;
awaiter<#= j #> = enumerator<#= j #>.MoveNextAsync().GetAwaiter();
awaiter<#= j #>.SourceOnCompleted(Completed<#= j #>Delegate, this);
}
<# } #>
if (<#= string.Join(" || ", Enumerable.Range(1, i).Select(x => $"!running{x}")) #>)
{
goto AGAIN;
}
syncRunning = false;
return new UniTask<bool>(this, completionSource.Version);
}
<# for(var j = 1; j <= i; j++) { #>
static void Completed<#= j #>(object state)
{
var self = (_CombineLatest)state;
self.running<#= j #> = false;
try
{
if (self.awaiter<#= j #>.GetResult())
{
self.hasCurrent<#= j #> = true;
self.current<#= j #> = self.enumerator<#= j #>.Current;
goto SUCCESS;
}
else
{
if (Interlocked.Increment(ref self.completedCount) == CompleteCount)
{
goto COMPLETE;
}
self.running<#= j #> = true; // as complete.
return;
}
}
catch (Exception ex)
{
self.completedCount = CompleteCount;
self.completionSource.TrySetException(ex);
return;
}
SUCCESS:
if (!self.TrySetResult())
{
if (self.syncRunning) return;
try
{
self.awaiter<#= j #> = self.enumerator<#= j #>.MoveNextAsync().GetAwaiter();
}
catch (Exception ex)
{
self.completedCount = CompleteCount;
self.completionSource.TrySetException(ex);
return;
}
self.awaiter<#= j #>.SourceOnCompleted(Completed<#= j #>Delegate, self);
}
return;
COMPLETE:
self.completionSource.TrySetResult(false);
return;
}
<# } #>
bool TrySetResult()
{
if (<#= string.Join(" && ", Enumerable.Range(1, i).Select(x => $"hasCurrent{x}")) #>)
{
result = resultSelector(<#= string.Join(", ", Enumerable.Range(1, i).Select(x => $"current{x}")) #>);
completionSource.TrySetResult(true);
return true;
}
else
{
return false;
}
}
public async UniTask DisposeAsync()
{
<# for(var j = 1; j <= i; j++) { #>
if (enumerator<#= j #> != null)
{
await enumerator<#= j #>.DisposeAsync();
}
<# } #>
}
}
}
<# } #>
}

7
src/UniTask/Assets/Plugins/UniTask/Runtime/Linq/CombineLatest.tt.meta Normal file
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@ -0,0 +1,7 @@
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externalObjects: {}
userData:
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2
src/UniTask/Assets/Scenes/SandboxMain.cs
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@ -275,6 +275,8 @@ public class SandboxMain : MonoBehaviour
okButton.OnClickAsAsyncEnumerable().ForEachAsync(_ =>
{