75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
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#ifndef BOOST_STATECHART_CUSTOM_REACTION_HPP_INCLUDED
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#define BOOST_STATECHART_CUSTOM_REACTION_HPP_INCLUDED
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//////////////////////////////////////////////////////////////////////////////
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// Copyright 2002-2006 Andreas Huber Doenni
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// Distributed under the Boost Software License, Version 1.0. (See accompany-
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// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//////////////////////////////////////////////////////////////////////////////
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#include <boost/statechart/result.hpp>
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#include <boost/polymorphic_cast.hpp> // boost::polymorphic_downcast
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namespace boost
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{
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namespace statechart
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{
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class event_base;
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//////////////////////////////////////////////////////////////////////////////
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template< class Event >
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class custom_reaction
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{
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public:
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//////////////////////////////////////////////////////////////////////////
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// The following declarations should be private.
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// They are only public because many compilers lack template friends.
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//////////////////////////////////////////////////////////////////////////
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template< class State, class EventBase, class IdType >
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static detail::reaction_result react(
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State & stt, const EventBase & evt, const IdType & eventType )
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{
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if ( eventType == Event::static_type() )
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{
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return detail::result_utility::get_result(
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stt.react( *polymorphic_downcast< const Event * >( &evt ) ) );
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}
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else
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{
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return detail::no_reaction;
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}
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}
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};
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template<>
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class custom_reaction< event_base >
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{
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public:
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//////////////////////////////////////////////////////////////////////////
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// The following declarations should be private.
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// They are only public because many compilers lack template friends.
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//////////////////////////////////////////////////////////////////////////
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template< class State, class EventBase, class IdType >
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static detail::reaction_result react(
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State & stt, const EventBase & evt, const IdType & )
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{
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return detail::result_utility::get_result( stt.react( evt ) );
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}
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};
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} // namespace statechart
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} // namespace boost
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#endif
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