| // Copyright 2008 Christophe Henry |
| // henry UNDERSCORE christophe AT hotmail DOT com |
| // This is an extended version of the state machine available in the boost::mpl library |
| // Distributed under the same license as the original. |
| // Copyright for the original version: |
| // Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed |
| // under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #ifndef BOOST_MSM_ROW2_HELPER_HPP |
| #define BOOST_MSM_ROW2_HELPER_HPP |
| |
| #include <boost/mpl/bool.hpp> |
| #include <boost/fusion/include/at_key.hpp> |
| |
| namespace boost { namespace msm { namespace front |
| { |
| namespace detail |
| { |
| template< |
| typename CalledForAction |
| , typename Event |
| , void (CalledForAction::*action)(Event const&) |
| > |
| struct row2_action_helper |
| { |
| template <class FSM,class Evt,class SourceState,class TargetState, class AllStates> |
| static void call_helper(FSM&,Evt const& evt,SourceState&,TargetState&, |
| AllStates& all_states,::boost::mpl::false_ const &) |
| { |
| // in this front-end, we don't need to know source and target states |
| ( ::boost::fusion::at_key<CalledForAction>(all_states).*action)(evt); |
| } |
| template <class FSM,class Evt,class SourceState,class TargetState, class AllStates> |
| static void call_helper(FSM& fsm,Evt const& evt,SourceState&,TargetState&,AllStates&, |
| ::boost::mpl::true_ const &) |
| { |
| // in this front-end, we don't need to know source and target states |
| (fsm.*action)(evt); |
| } |
| }; |
| |
| template< |
| typename CalledForGuard |
| , typename Event |
| , bool (CalledForGuard::*guard)(Event const&) |
| > |
| struct row2_guard_helper |
| { |
| template <class FSM,class Evt,class SourceState,class TargetState,class AllStates> |
| static bool call_helper(FSM&,Evt const& evt,SourceState&,TargetState&, |
| AllStates& all_states, ::boost::mpl::false_ const &) |
| { |
| // in this front-end, we don't need to know source and target states |
| return ( ::boost::fusion::at_key<CalledForGuard>(all_states).*guard)(evt); |
| } |
| template <class FSM,class Evt,class SourceState,class TargetState,class AllStates> |
| static bool call_helper(FSM& fsm,Evt const& evt,SourceState&,TargetState&, |
| AllStates&,::boost::mpl::true_ const &) |
| { |
| // in this front-end, we don't need to know source and target states |
| return (fsm.*guard)(evt); |
| } |
| }; |
| } |
| |
| }}} |
| |
| #endif //BOOST_MSM_ROW2_HELPER_HPP |
| |