event_processor.hpp

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#ifndef BOOST_STATECHART_EVENT_PROCESSOR_INCLUDED
#define BOOST_STATECHART_EVENT_PROCESSOR_INCLUDED
// Copyright 2002-2008 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)
 
 
 
namespace boost
{
namespace statechart
{
 
 
  
class event_base;
 
 
 
template< class Scheduler >
class event_processor
{
  public:
    virtual ~event_processor() {}
 
    Scheduler & my_scheduler() const
    {
      return myScheduler_;
    }
 
    typedef typename Scheduler::processor_handle processor_handle;
 
    processor_handle my_handle() const
    {
      return myHandle_;
    }
 
    void initiate()
    {
      initiate_impl();
    }
 
    void process_event( const event_base & evt )
    {
      process_event_impl( evt );
    }
 
    void terminate()
    {
      terminate_impl();
    }
 
  protected:
    typedef const typename Scheduler::processor_context & my_context;
 
    event_processor( my_context ctx ) :
      myScheduler_( ctx.my_scheduler() ),
      myHandle_( ctx.my_handle() )
    {
    }
 
  private:
    virtual void initiate_impl() = 0;
    virtual void process_event_impl( const event_base & evt ) = 0;
    virtual void terminate_impl() = 0;
 
    // avoids C4512 (assignment operator could not be generated)
    event_processor & operator=( const event_processor & );
 
    Scheduler & myScheduler_;
    const processor_handle myHandle_;
};
 
 
 
} // namespace statechart
} // namespace boost
 
 
 
#endif