projects / ceph.git / blame
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| 7c673cae FG |
1 | // Copyright 2008 Christophe Henry |
| 2 | // henry UNDERSCORE christophe AT hotmail DOT com | |
| 3 | // This is an extended version of the state machine available in the boost::mpl library | |
| 4 | // Distributed under the same license as the original. | |
| 5 | // Copyright for the original version: | |
| 6 | // Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed | |
| 7 | // under the Boost Software License, Version 1.0. (See accompanying | |
| 8 | // file LICENSE_1_0.txt or copy at | |
| 9 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 10 | ||
| 11 | #ifndef BOOST_MSM_ROW2_HELPER_HPP | |
| 12 | #define BOOST_MSM_ROW2_HELPER_HPP | |
| 13 | ||
| 14 | #include <boost/mpl/bool.hpp> | |
| 15 | #include <boost/fusion/include/at_key.hpp> | |
| 16 | ||
| 17 | namespace boost { namespace msm { namespace front | |
| 18 | { | |
| 19 | namespace detail | |
| 20 | { | |
| 21 | template< | |
| 22 | typename CalledForAction | |
| 23 | , typename Event | |
| 24 | , void (CalledForAction::*action)(Event const&) | |
| 25 | > | |
| 26 | struct row2_action_helper | |
| 27 | { | |
| 28 | template <class FSM,class Evt,class SourceState,class TargetState, class AllStates> | |
| 29 | static void call_helper(FSM&,Evt const& evt,SourceState&,TargetState&, | |
| 30 | AllStates& all_states,::boost::mpl::false_ const &) | |
| 31 | { | |
| 32 | // in this front-end, we don't need to know source and target states | |
| 33 | ( ::boost::fusion::at_key<CalledForAction>(all_states).*action)(evt); | |
| 34 | } | |
| 35 | template <class FSM,class Evt,class SourceState,class TargetState, class AllStates> | |
| 36 | static void call_helper(FSM& fsm,Evt const& evt,SourceState&,TargetState&,AllStates&, | |
| 37 | ::boost::mpl::true_ const &) | |
| 38 | { | |
| 39 | // in this front-end, we don't need to know source and target states | |
| 40 | (fsm.*action)(evt); | |
| 41 | } | |
| 42 | }; | |
| 43 | ||
| 44 | template< | |
| 45 | typename CalledForGuard | |
| 46 | , typename Event | |
| 47 | , bool (CalledForGuard::*guard)(Event const&) | |
| 48 | > | |
| 49 | struct row2_guard_helper | |
| 50 | { | |
| 51 | template <class FSM,class Evt,class SourceState,class TargetState,class AllStates> | |
| 52 | static bool call_helper(FSM&,Evt const& evt,SourceState&,TargetState&, | |
| 53 | AllStates& all_states, ::boost::mpl::false_ const &) | |
| 54 | { | |
| 55 | // in this front-end, we don't need to know source and target states | |
| 56 | return ( ::boost::fusion::at_key<CalledForGuard>(all_states).*guard)(evt); | |
| 57 | } | |
| 58 | template <class FSM,class Evt,class SourceState,class TargetState,class AllStates> | |
| 59 | static bool call_helper(FSM& fsm,Evt const& evt,SourceState&,TargetState&, | |
| 60 | AllStates&,::boost::mpl::true_ const &) | |
| 61 | { | |
| 62 | // in this front-end, we don't need to know source and target states | |
| 63 | return (fsm.*guard)(evt); | |
| 64 | } | |
| 65 | }; | |
| 66 | } | |
| 67 | ||
| 68 | }}} | |
| 69 | ||
| 70 | #endif //BOOST_MSM_ROW2_HELPER_HPP | |
| 71 |