ecency-mobile/ios/Pods/boost-for-react-native/boost/statechart/in_state_reaction.hpp

74 lines
2.2 KiB
C++

#ifndef BOOST_STATECHART_IN_STATE_REACTION_HPP_INCLUDED
#define BOOST_STATECHART_IN_STATE_REACTION_HPP_INCLUDED
//////////////////////////////////////////////////////////////////////////////
// Copyright 2005-2008 Andreas Huber Doenni
// Distributed under the Boost Software License, Version 1.0. (See accompany-
// ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//////////////////////////////////////////////////////////////////////////////
#include <boost/statechart/result.hpp>
#include <boost/statechart/detail/reaction_dispatcher.hpp>
namespace boost
{
namespace statechart
{
class event_base;
//////////////////////////////////////////////////////////////////////////////
template< class Event,
class ReactionContext = detail::no_context< Event >,
void ( ReactionContext::*pAction )( const Event & ) =
&detail::no_context< Event >::no_function >
class in_state_reaction
{
private:
//////////////////////////////////////////////////////////////////////////
template< class State >
struct reactions
{
static result react_without_action( State & stt )
{
return stt.discard_event();
}
static result react_with_action( State & stt, const Event & evt )
{
( stt.template context< ReactionContext >().*pAction )( evt );
return react_without_action( stt );
}
};
public:
//////////////////////////////////////////////////////////////////////////
// The following declarations should be private.
// They are only public because many compilers lack template friends.
//////////////////////////////////////////////////////////////////////////
template< class State, class EventBase, class IdType >
static detail::reaction_result react(
State & stt, const EventBase & evt, const IdType & eventType )
{
typedef detail::reaction_dispatcher<
reactions< State >, State, EventBase, Event, ReactionContext, IdType
> dispatcher;
return dispatcher::react( stt, evt, eventType );
}
};
} // namespace statechart
} // namespace boost
#endif