Re: [boost] [msm]exit pseudo state and event

Subject: Re: [boost] [msm]exit pseudo state and event
From: Christophe Henry (christophe.j.henry_at_[hidden])
Date: 2011-07-11 15:16:57

> At first, I was not sure it is correct or not
> that calling process_event recursively.
>
> process_event() -> operator()() -> process_event()
>
> But you pointed out it's no problem.
> I can use the msm mechanism flexibly!

It's not really recursive, the second process_event just gets queued until 
the first completes, but it's just an implementation detail.

> I think that your euml functor is also useful outside of euml as DESL.

Right now no, because it can handle only 3 or 4 arguments. But this is going 
to change soon, I'm working on it.

> The functor Not_ is suitable for "else".
> But if we have much more guards, We have to use Or_ functor like this.
> msme::Not_< msme::Or_< msme::Or_<Guard1, Guard2>, Guard3> >
>
> Off the top of my head, how about the functor Else_ below?
> Else_ <Guard1, Guard2, Guard3, ... >

Do you mean a transition with some "if " as guard, followed by a transition 
with Else_? Hmmm this will be hard to get right but it's an idea.
What I have is If_Else_<Condition,Action1,Action2> but only as guard of a 
single transition.

Regards,
Christophe