1#ifndef BOOST_STATECHART_TRANSITION_HPP_INCLUDED
2#define BOOST_STATECHART_TRANSITION_HPP_INCLUDED
3//////////////////////////////////////////////////////////////////////////////
4// Copyright 2002-2008 Andreas Huber Doenni
5// Distributed under the Boost Software License, Version 1.0. (See accompany-
6// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
7//////////////////////////////////////////////////////////////////////////////
8
9
10
11#include <boost/statechart/result.hpp>
12
13#include <boost/statechart/detail/reaction_dispatcher.hpp>
14
15
16
17namespace boost
18{
19namespace statechart
20{
21
22
23
24//////////////////////////////////////////////////////////////////////////////
25template< class Event, class Destination,
26 class TransitionContext = detail::no_context< Event >,
27 void ( TransitionContext::*pTransitionAction )( const Event & ) =
28 &detail::no_context< Event >::no_function >
29class transition
30{
31 private:
32 //////////////////////////////////////////////////////////////////////////
33 template< class State >
34 struct reactions
35 {
36 static result react_without_action( State & stt )
37 {
38 return stt.template transit< Destination >();
39 }
40
41 static result react_with_action( State & stt, const Event & evt )
42 {
43 return stt.template transit< Destination >( pTransitionAction, evt );
44 }
45 };
46
47 public:
48 //////////////////////////////////////////////////////////////////////////
49 // The following declarations should be private.
50 // They are only public because many compilers lack template friends.
51 //////////////////////////////////////////////////////////////////////////
52 template< class State, class EventBase, class IdType >
53 static detail::reaction_result react(
54 State & stt, const EventBase & evt, const IdType & eventType )
55 {
56 typedef detail::reaction_dispatcher<
57 reactions< State >, State, EventBase, Event, TransitionContext, IdType
58 > dispatcher;
59 return dispatcher::react( stt, evt, eventType );
60 }
61};
62
63
64
65} // namespace statechart
66} // namespace boost
67
68
69
70#endif
71

source code of boost/libs/statechart/include/boost/statechart/transition.hpp