boost/statechart/asynchronous_state_machine.hpp

0001 #ifndef BOOST_STATECHART_ASYNCHRONOUS_STATE_MACHINE_HPP_INCLUDED
0002 #define BOOST_STATECHART_ASYNCHRONOUS_STATE_MACHINE_HPP_INCLUDED
0003 //////////////////////////////////////////////////////////////////////////////
0004 // Copyright 2002-2006 Andreas Huber Doenni
0005 // Distributed under the Boost Software License, Version 1.0. (See accompany-
0006 // ing file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0007 //////////////////////////////////////////////////////////////////////////////
0008
0009
0010
0011 #include <boost/statechart/state_machine.hpp>
0012 #include <boost/statechart/fifo_scheduler.hpp>
0013 #include <boost/statechart/null_exception_translator.hpp>
0014 #include <boost/statechart/event_processor.hpp>
0015
0016 #include <memory>   // std::allocator
0017
0018
0019 namespace boost
0020 {
0021 namespace statechart
0022 {
0023
0024
0025
0026 class event_base;
0027
0028
0029
0030 //////////////////////////////////////////////////////////////////////////////
0031 template< class MostDerived,
0032           class InitialState,
0033           class Scheduler = fifo_scheduler<>,
0034           class Allocator = std::allocator< none >,
0035           class ExceptionTranslator = null_exception_translator >
0036 class asynchronous_state_machine : public state_machine<
0037   MostDerived, InitialState, Allocator, ExceptionTranslator >,
0038   public event_processor< Scheduler >
0039 {
0040   typedef state_machine< MostDerived,
0041     InitialState, Allocator, ExceptionTranslator > machine_base;
0042   typedef event_processor< Scheduler > processor_base;
0043   protected:
0044     //////////////////////////////////////////////////////////////////////////
0045     typedef asynchronous_state_machine my_base;
0046
0047     asynchronous_state_machine( typename processor_base::my_context ctx ) :
0048       processor_base( ctx )
0049     {
0050     }
0051
0052     virtual ~asynchronous_state_machine() {}
0053
0054   public:
0055     //////////////////////////////////////////////////////////////////////////
0056     // The following declarations should be private.
0057     // They are only public because many compilers lack template friends.
0058     //////////////////////////////////////////////////////////////////////////
0059     void terminate()
0060     {
0061       processor_base::terminate();
0062     }
0063
0064   private:
0065     //////////////////////////////////////////////////////////////////////////
0066     virtual void initiate_impl()
0067     {
0068       machine_base::initiate();
0069     }
0070
0071     virtual void process_event_impl( const event_base & evt )
0072     {
0073       machine_base::process_event( evt );
0074     }
0075
0076     virtual void terminate_impl()
0077     {
0078       machine_base::terminate();
0079     }
0080 };
0081
0082
0083
0084 } // namespace statechart
0085 } // namespace boost
0086
0087
0088
0089 #endif