public static Task Then <T1, T2>(this Task task, Action <T1, T2> successor, T1 arg1, T2 arg2)
{
switch (task.Status)
{
case TaskStatus.Faulted:
case TaskStatus.Canceled:
return(task);
case TaskStatus.RanToCompletion:
return(FromMethod(successor, arg1, arg2));
default:
return(GenericDelegates <object, object, T1, T2, object> .ThenWithArgs(task, successor, arg1, arg2));
}
}
public static Task <TResult> Then <TResult, T1>(this Task <TResult> task, Func <Task <TResult>, T1, Task <TResult> > successor, T1 arg1)
{
switch (task.Status)
{
case TaskStatus.Faulted:
case TaskStatus.Canceled:
return(task);
case TaskStatus.RanToCompletion:
return(FromMethod(successor, task, arg1));
default:
return(GenericDelegates <TResult, Task <TResult>, T1, object, object> .ThenWithArgs(task, successor, arg1)
.FastUnwrap());
}
}
public static Task Then <T1, T2, T3>(this Task task, Func <T1, T2, T3, Task> successor, T1 arg1, T2 arg2, T3 arg3)
{
switch (task.Status)
{
case TaskStatus.Faulted:
case TaskStatus.Canceled:
return(task);
case TaskStatus.RanToCompletion:
return(FromMethod(successor, arg1, arg2, arg3));
default:
return(GenericDelegates <object, Task, T1, T2, T3> .ThenWithArgs(task, successor, arg1, arg2, arg3)
.FastUnwrap());
}
}
public static Task <TResult> Then <T, T1, TResult>(this Task <T> task, Func <T, T1, TResult> successor, T1 arg1)
{
switch (task.Status)
{
case TaskStatus.Faulted:
return(FromError <TResult>(task.Exception));
case TaskStatus.Canceled:
return(Canceled <TResult>());
case TaskStatus.RanToCompletion:
return(FromMethod(successor, task.Result, arg1));
default:
return(GenericDelegates <T, TResult, T1, object, object> .ThenWithArgs(task, successor, arg1));
}
}
public static Task Then <T1>(this Task task, Action <T1> successor, T1 arg1)
{
switch (task.Status)
{
case TaskStatus.Faulted:
return(FromError(task.Exception));
case TaskStatus.Canceled:
return(Canceled());
case TaskStatus.RanToCompletion:
return(FromMethod(successor, arg1));
default:
return(GenericDelegates <object, object, T1, object> .ThenWithArgs(task, successor, arg1));
}
}
public static Task Then<T1, T2>(this Task task, Func<T1, T2, Task> successor, T1 arg1, T2 arg2)
{
switch (task.Status)
{
case TaskStatus.Faulted:
return FromError(task.Exception);
case TaskStatus.Canceled:
return Canceled();
case TaskStatus.RanToCompletion:
return FromMethod(successor, arg1, arg2).FastUnwrap();
default:
return GenericDelegates<object, Task, T1, T2>.ThenWithArgs(task, successor, arg1, arg2)
.FastUnwrap();
}
}