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