// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
namespace System.Runtime.CompilerServices
{
/// Provides an awaiter for a .
public struct ValueTaskAwaiter : ICriticalNotifyCompletion
{
/// The value being awaited.
private ValueTask _value; // Methods are called on this; avoid making it readonly so as to avoid unnecessary copies
/// Initializes the awaiter.
/// The value to be awaited.
internal ValueTaskAwaiter(ValueTask value) => _value = value;
/// Gets whether the has completed.
public bool IsCompleted => _value.IsCompleted;
/// Gets the result of the ValueTask.
[StackTraceHidden]
public TResult GetResult() =>
_value._task == null ?
_value._result :
_value._task.GetAwaiter().GetResult();
/// Schedules the continuation action for this ValueTask.
public void OnCompleted(Action continuation) =>
_value.AsTask().ConfigureAwait(continueOnCapturedContext: true).GetAwaiter().OnCompleted(continuation);
/// Schedules the continuation action for this ValueTask.
public void UnsafeOnCompleted(Action continuation) =>
_value.AsTask().ConfigureAwait(continueOnCapturedContext: true).GetAwaiter().UnsafeOnCompleted(continuation);
/// Gets the task underlying .
internal Task AsTask() => _value.AsTask();
}
}