UniTask/Assets/UniRx.Async/CompilerServices/MoveNextRunner.cs

59 lines
1.5 KiB
C#

#if CSHARP_7_OR_LATER || (UNITY_2018_3_OR_NEWER && (NET_STANDARD_2_0 || NET_4_6))
#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using UniRx.Async.Internal;
namespace UniRx.Async.CompilerServices
{
internal interface IMoveNextRunner
{
Action CallMoveNext { get; }
void Return();
}
internal class MoveNextRunner<TStateMachine> : IMoveNextRunner, IPromisePoolItem
where TStateMachine : IAsyncStateMachine
{
static PromisePool<MoveNextRunner<TStateMachine>> pool = new PromisePool<MoveNextRunner<TStateMachine>>();
TStateMachine stateMachine;
internal readonly Action callMoveNext;
public Action CallMoveNext => callMoveNext;
MoveNextRunner()
{
callMoveNext = MoveNext;
}
public static MoveNextRunner<TStateMachine> Create(ref TStateMachine stateMachine)
{
var result = pool.TryRent() ?? new MoveNextRunner<TStateMachine>();
result.stateMachine = stateMachine;
return result;
}
[DebuggerHidden]
[MethodImpl(MethodImplOptions.AggressiveInlining)]
void MoveNext()
{
stateMachine.MoveNext();
}
public void Return()
{
pool.TryReturn(this);
}
void IPromisePoolItem.Reset()
{
stateMachine = default;
}
}
}
#endif