UniTask/Assets/UniRx.Async/UniTask.WhenAll.Generated.tt

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<#@ 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" #>
#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
using System;
using System.Runtime.CompilerServices;
using System.Runtime.ExceptionServices;
using System.Threading;
using UniRx.Async.Internal;
namespace UniRx.Async
{
public partial struct UniTask
{
<# for(var i = 2; i <= 15; i++ ) {
var range = Enumerable.Range(1, i);
var t = string.Join(", ", range.Select(x => "T" + x));
var args = string.Join(", ", range.Select(x => $"UniTask<T{x}> task{x}"));
var targs = string.Join(", ", range.Select(x => $"task{x}"));
var tresult = string.Join(", ", range.Select(x => $"task{x}.GetAwaiter().GetResult()"));
var completedSuccessfullyAnd = string.Join(" && ", range.Select(x => $"task{x}.Status.IsCompletedSuccessfully()"));
var tfield = string.Join(", ", range.Select(x => $"self.t{x}"));
#>
public static UniTask<(<#= t #>)> WhenAll<<#= t #>>(<#= args #>)
{
if (<#= completedSuccessfullyAnd #>)
{
return new UniTask<(<#= t #>)>((<#= tresult #>));
}
return new UniTask<(<#= t #>)>(new WhenAllPromise<<#= t #>>(<#= targs #>), 0);
}
sealed class WhenAllPromise<<#= t #>> : IUniTaskSource<(<#= t #>)>
{
<# for(var j = 1; j <= i; j++) { #>
T<#= j #> t<#= j #> = default;
<# } #>
int completedCount;
UniTaskCompletionSourceCore<(<#= t #>)> core;
public WhenAllPromise(<#= args #>)
{
TaskTracker2.TrackActiveTask(this, 3);
this.completedCount = 0;
<# for(var j = 1; j <= i; j++) { #>
{
var awaiter = task<#= j #>.GetAwaiter();
if (awaiter.IsCompleted)
{
TryInvokeContinuationT<#= j #>(this, awaiter);
}
else
{
awaiter.SourceOnCompleted(state =>
{
using (var t = (StateTuple<WhenAllPromise<<#= t #>>, UniTask<T<#= j #>>.Awaiter>)state)
{
TryInvokeContinuationT<#= j #>(t.Item1, t.Item2);
}
}, StateTuple.Create(this, awaiter));
}
}
<# } #>
}
<# for(var j = 1; j <= i; j++) { #>
static void TryInvokeContinuationT<#= j #>(WhenAllPromise<<#= t #>> self, in UniTask<T<#= j #>>.Awaiter awaiter)
{
try
{
self.t<#= j #> = awaiter.GetResult();
}
catch (Exception ex)
{
self.core.TrySetException(ex);
return;
}
if (Interlocked.Increment(ref self.completedCount) == <#= i #>)
{
self.core.TrySetResult((<#= tfield #>));
}
}
<# } #>
public (<#= t #>) GetResult(short token)
{
TaskTracker2.RemoveTracking(this);
GC.SuppressFinalize(this);
return core.GetResult(token);
}
void IUniTaskSource.GetResult(short token)
{
GetResult(token);
}
public UniTaskStatus GetStatus(short token)
{
return core.GetStatus(token);
}
public UniTaskStatus UnsafeGetStatus()
{
return core.UnsafeGetStatus();
}
public void OnCompleted(Action<object> continuation, object state, short token)
{
core.OnCompleted(continuation, state, token);
}
~WhenAllPromise()
{
core.Reset();
}
}
<# } #>
}
}