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1 | #ifndef BOOST_STATECHART_IN_STATE_REACTION_HPP_INCLUDED |
2 | #define BOOST_STATECHART_IN_STATE_REACTION_HPP_INCLUDED | |
3 | ////////////////////////////////////////////////////////////////////////////// | |
4 | // Copyright 2005-2008 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 | ||
17 | namespace boost | |
18 | { | |
19 | namespace statechart | |
20 | { | |
21 | ||
22 | ||
23 | ||
24 | class event_base; | |
25 | ||
26 | ////////////////////////////////////////////////////////////////////////////// | |
27 | template< class Event, | |
28 | class ReactionContext = detail::no_context< Event >, | |
29 | void ( ReactionContext::*pAction )( const Event & ) = | |
30 | &detail::no_context< Event >::no_function > | |
31 | class in_state_reaction | |
32 | { | |
33 | private: | |
34 | ////////////////////////////////////////////////////////////////////////// | |
35 | template< class State > | |
36 | struct reactions | |
37 | { | |
38 | static result react_without_action( State & stt ) | |
39 | { | |
40 | return stt.discard_event(); | |
41 | } | |
42 | ||
43 | static result react_with_action( State & stt, const Event & evt ) | |
44 | { | |
45 | ( stt.template context< ReactionContext >().*pAction )( evt ); | |
46 | return react_without_action( stt ); | |
47 | } | |
48 | }; | |
49 | ||
50 | public: | |
51 | ////////////////////////////////////////////////////////////////////////// | |
52 | // The following declarations should be private. | |
53 | // They are only public because many compilers lack template friends. | |
54 | ////////////////////////////////////////////////////////////////////////// | |
55 | template< class State, class EventBase, class IdType > | |
56 | static detail::reaction_result react( | |
57 | State & stt, const EventBase & evt, const IdType & eventType ) | |
58 | { | |
59 | typedef detail::reaction_dispatcher< | |
60 | reactions< State >, State, EventBase, Event, ReactionContext, IdType | |
61 | > dispatcher; | |
62 | return dispatcher::react( stt, evt, eventType ); | |
63 | } | |
64 | }; | |
65 | ||
66 | ||
67 | ||
68 | } // namespace statechart | |
69 | } // namespace boost | |
70 | ||
71 | ||
72 | ||
73 | #endif |