public void AwaitUnsafeOnCompleted <TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
where TAwaiter : ICriticalNotifyCompletion
where TStateMachine : IAsyncStateMachine
{
var firstAwait = this.promise == null;
if (firstAwait)
{
this.promise = new Promise <T>();
if (awaiter is ISwitchCaseCondition cond)
{
this.cond = cond;
}
var w = new StateMachineWrapper <TStateMachine>();
this.continuation = w.MoveNext;
w.StateMachine = stateMachine;
}
awaiter.UnsafeOnCompleted(this.continuation);
}
public SwitchCase(ISwitchCaseCondition cond, Awaiter <T> awaiter) => (this.cond, this.awaiter) = (cond, awaiter);
