async decompiler

gistfile1.cs

// Original:
	public async Task<bool> SimpleBoolTaskMethod()
	{
		Console.WriteLine("Before");
		await Task.Delay(TimeSpan.FromSeconds(1.0));
		Console.WriteLine("After");
		return true;
	}

// MoveNext
void IAsyncStateMachine.MoveNext()
{
	bool result;
	try
	{
		int num = this.<>1__state;
		TaskAwaiter taskAwaiter;
		if (num != 0)
		{
			Console.WriteLine("Before");
			taskAwaiter = Task.Delay(TimeSpan.FromSeconds(1.0)).GetAwaiter();
			if (!taskAwaiter.IsCompleted)
			{
				this.<>1__state = 0;
				this.<>u__$awaiterb = taskAwaiter;
				this.<>t__builder.AwaitUnsafeOnCompleted<TaskAwaiter, Async.<SimpleBoolTaskMethod>d__a>(ref taskAwaiter, ref this);
				return;
			}
		}
		else
		{
			taskAwaiter = this.<>u__$awaiterb;
			this.<>u__$awaiterb = default(TaskAwaiter);
			this.<>1__state = -1;
		}
		taskAwaiter.GetResult();
		taskAwaiter = default(TaskAwaiter);
		Console.WriteLine("After");
		result = true;
	}
	catch (Exception exception)
	{
		this.<>1__state = -2;
		this.<>t__builder.SetException(exception);
		return;
	}
	this.<>1__state = -2;
	this.<>t__builder.SetResult(result);
}

// After first async decompilation phase:
[DebuggerStepThrough]
public async Task<bool> SimpleBoolTaskMethod()
{
	Console.WriteLine("Before");
	TaskAwaiter taskAwaiter = Task.Delay(TimeSpan.FromSeconds(1.0)).GetAwaiter();
	if (!taskAwaiter.IsCompleted)
	{
		await ref taskAwaiter;
		taskAwaiter = this.<>u__$awaiterb;
		this.<>u__$awaiterb = default(TaskAwaiter);
		this.<>1__state = -1;
	}
	taskAwaiter.GetResult();
	taskAwaiter = default(TaskAwaiter);
	Console.WriteLine("After");
	return 1;
}