#ifndef BOOST_STATECHART_EVENT_HPP_INCLUDED

#define BOOST_STATECHART_EVENT_HPP_INCLUDED

//////////////////////////////////////////////////////////////////////////////

// Copyright 2002-2006 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/event_base.hpp>

#include <boost/statechart/detail/rtti_policy.hpp>

#include <boost/statechart/detail/memory.hpp>

#include <boost/cast.hpp> // boost::polymorphic_downcast

#include <memory>   // std::allocator

namespace boost

{

namespace statechart

{

//////////////////////////////////////////////////////////////////////////////

template< class MostDerived, class Allocator = std::allocator< void > >

class event : public detail::rtti_policy::rtti_derived_type<

  MostDerived, event_base >

{

  public:

    //////////////////////////////////////////////////////////////////////////

    // Compiler-generated copy constructor and copy assignment operator are

    // fine

    void * operator new( std::size_t size )

    {

      return detail::allocate< MostDerived, Allocator >( size );

    }

    void operator delete( void * pEvent )

    {

      detail::deallocate< MostDerived, Allocator >( pEvent );

    }

  protected:

    //////////////////////////////////////////////////////////////////////////

    event() {}

    virtual ~event() {}

  private:

    //////////////////////////////////////////////////////////////////////////

    virtual intrusive_ptr< const event_base > clone() const

    {

      return intrusive_ptr< const event_base >( new MostDerived(

        *polymorphic_downcast< const MostDerived * >( this ) ) );

    }

};

} // namespace statechart

} // namespace boost

#endif