Changed AsyncReactiveProperty produce current value at first, Add AsyncReactiveProperty.WithoutCurrent
parent
ec0a8f5a8b
commit
d003597662
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@ -86,34 +86,16 @@ namespace NetCoreSandbox
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await Task.Delay(10, cancellationToken);
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}
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private async UniTaskVoid HogeAsync()
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static void Main(string[] args)
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{
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}
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static async Task Main(string[] args)
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{
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await foreach (var item in UniTaskAsyncEnumerable.Range(1, 10)
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.SelectAwait(x => UniTask.Run(() => x))
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.TakeLast(6)
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)
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{
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Console.WriteLine(item);
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}
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// AsyncEnumerable.Range(1,10).FirstAsync(
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// AsyncEnumerable.Range(1, 10).GroupBy(x=>x).Select(x=>x.first
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var channel = Channel.CreateSingleConsumerUnbounded<int>();
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// AsyncEnumerable.Range(1,10).WithCancellation(CancellationToken.None).WithCancellation
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//Enumerable.Range(1,10).ToHashSet(
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}
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@ -0,0 +1,57 @@
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using Cysharp.Threading.Tasks;
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using FluentAssertions;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading;
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using System.Threading.Channels;
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using Cysharp.Threading.Tasks.Linq;
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using System.Threading.Tasks;
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using Xunit;
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namespace NetCoreTests
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{
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public class AsyncReactivePropertyTest
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{
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[Fact]
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public async Task Iteration()
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{
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var rp = new AsyncReactiveProperty<int>(99);
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var f = await rp.FirstAsync();
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f.Should().Be(99);
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var array = rp.Take(5).ToArrayAsync();
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rp.Value = 100;
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rp.Value = 100;
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rp.Value = 100;
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rp.Value = 131;
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var ar = await array;
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ar.Should().BeEquivalentTo(new[] { 99, 100, 100, 100, 131 });
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}
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[Fact]
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public async Task WithoutCurrent()
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{
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var rp = new AsyncReactiveProperty<int>(99);
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var array = rp.WithoutCurrent().Take(5).ToArrayAsync();
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rp.Value = 100;
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rp.Value = 100;
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rp.Value = 100;
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rp.Value = 131;
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rp.Value = 191;
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var ar = await array;
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ar.Should().BeEquivalentTo(new[] { 100, 100, 100, 131, 191 });
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}
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}
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}
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@ -43,9 +43,14 @@ namespace Cysharp.Threading.Tasks
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this.triggerEvent = default;
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}
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public IUniTaskAsyncEnumerable<T> WithoutCurrent()
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{
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return new WithoutCurrentEnumerable(this);
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}
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public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken)
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{
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return new Enumerator(this, cancellationToken);
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return new Enumerator(this, cancellationToken, true);
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}
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public void Dispose()
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@ -53,6 +58,21 @@ namespace Cysharp.Threading.Tasks
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triggerEvent.SetCanceled(CancellationToken.None);
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}
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class WithoutCurrentEnumerable : IUniTaskAsyncEnumerable<T>
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{
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readonly AsyncReactiveProperty<T> parent;
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public WithoutCurrentEnumerable(AsyncReactiveProperty<T> parent)
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{
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this.parent = parent;
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}
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public IUniTaskAsyncEnumerator<T> GetAsyncEnumerator(CancellationToken cancellationToken = default)
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{
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return new Enumerator(parent, cancellationToken, false);
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}
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}
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sealed class Enumerator : MoveNextSource, IUniTaskAsyncEnumerator<T>, IResolveCancelPromise<T>
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{
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static Action<object> cancellationCallback = CancellationCallback;
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@ -62,11 +82,13 @@ namespace Cysharp.Threading.Tasks
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readonly CancellationTokenRegistration cancellationTokenRegistration;
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T value;
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bool isDisposed;
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bool firstCall;
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public Enumerator(AsyncReactiveProperty<T> parent, CancellationToken cancellationToken)
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public Enumerator(AsyncReactiveProperty<T> parent, CancellationToken cancellationToken, bool publishCurrentValue)
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{
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this.parent = parent;
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this.cancellationToken = cancellationToken;
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this.firstCall = publishCurrentValue;
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parent.triggerEvent.Add(this);
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TaskTracker.TrackActiveTask(this, 3);
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@ -81,6 +103,14 @@ namespace Cysharp.Threading.Tasks
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public UniTask<bool> MoveNextAsync()
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{
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// raise latest value on first call.
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if (firstCall)
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{
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firstCall = false;
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value = parent.Value;
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return CompletedTasks.True;
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}
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completionSource.Reset();
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return new UniTask<bool>(this, completionSource.Version);
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}
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