Re: [Boost-users] [statechart] How to keeptransition actionsseparatedfrom the interface?

From: Andreas Huber (ahd6974-spamboostorgtrap_at_[hidden])
Date: 2008-04-10 14:33:35

Hi Igor

> > The fact that transition actions are members of simple_state<> 
> > subclasses. If
> > you apply the pattern outlined in the FAQ item, none of these classes 
> > are
> > visible to FSM clients. Looking at
> >
> > http://www.boost.org/doc/libs/1_35_0/libs/statechart/doc/faq.html#HideInnerWorkings
>
> Is it possible to apply this apporoach to the asynchronous_state_machine?

Yes, but not in exactly the same way.

> For some reasone, trying to do so in my program causes compiler error:
> "use of undefined type 'Active'". Probably, I've done something wrong,
> but I'd like to know if it should work theoretically, before I turn my 
> code
> upside down :).

In your asynchronous_state_machine<> subclass hpp file add the following 
line :

  private:
    // ...
    virtual void initiate_impl();

In your asynchronous_state_machine<> subclass cpp file add the following 
lines:

    void YourClassName::initiate_impl()
    {
      machine_base::initiate();
    }

Please let me know whether that works for you.

Thanks & Regards,

-- 
Andreas Huber
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