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71 lines
2.9 KiB
71 lines
2.9 KiB
// 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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