//  (C) Copyright Gennadiy Rozental 2005.

 //  Distributed under the Boost Software License, Version 1.0.

 //  (See accompanying file LICENSE_1_0.txt or copy at 

 //  http://www.boost.org/LICENSE_1_0.txt)

 //  See http://www.boost.org/libs/test for the library home page.

 //

 //  File        : $RCSfile: rtti.hpp,v $

 //

 //  Version     : $Revision: 1.2 $

 //

 //  Description : simple facilities for accessing type information at runtime

 // ***************************************************************************

 #ifndef BOOST_TEST_RTTI_HPP_062604GER

 #define BOOST_TEST_RTTI_HPP_062604GER

 #include <cstddef>

 namespace boost {

 namespace rtti {

 // ************************************************************************** //

 // **************                   rtti::type_id              ************** //

 // ************************************************************************** //

 typedef std::ptrdiff_t id_t;

 namespace rtti_detail {

 template<typename T>

 struct rttid_holder {

     static id_t id() { return reinterpret_cast<id_t>( &inst() ); }

 private:

     struct rttid {};

     static rttid const& inst() { static rttid s_inst;  return s_inst; }

 };

 } // namespace rtti_detail

 //____________________________________________________________________________//

 template<typename T>   

 inline id_t

 type_id()

 {

     return rtti_detail::rttid_holder<T>::id();

 }

 //____________________________________________________________________________//

 #define BOOST_RTTI_SWITCH( type_id_ ) if( ::boost::rtti::id_t switch_by_id = type_id_ )

 #define BOOST_RTTI_CASE( type )       if( switch_by_id == ::boost::rtti::type_id<type>() )

 //____________________________________________________________________________//

 } // namespace rtti

 } // namespace boost

 // ************************************************************************** //

 //   Revision History:

 //

 //   $Log: rtti.hpp,v $

 //   Revision 1.2  2005/05/15 06:45:32  rogeeff

 //   *** empty log message ***

 //

 //   Revision 1.1  2005/04/12 06:48:12  rogeeff

 //   Runtime.Param library initial commit

 //

 // ************************************************************************** //

 #endif // BOOST_RT_RTTI_HPP_062604GER