Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2007 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying 
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #ifndef PHOENIX_OBJECT_DYNAMIC_CAST_HPP
Chris@16: #define PHOENIX_OBJECT_DYNAMIC_CAST_HPP
Chris@16: 
Chris@16: #include <boost/spirit/home/phoenix/core/compose.hpp>
Chris@16: 
Chris@16: namespace boost { namespace phoenix
Chris@16: {
Chris@16:     namespace impl
Chris@16:     {
Chris@16:         template <typename T>
Chris@16:         struct dynamic_cast_eval
Chris@16:         {
Chris@16:             template <typename Env, typename U>
Chris@16:             struct result
Chris@16:             {
Chris@16:                 typedef T type;
Chris@16:             };
Chris@16: 
Chris@16:             template <typename RT, typename Env, typename U>
Chris@16:             static RT
Chris@16:             eval(Env const& env, U& obj)
Chris@16:             {
Chris@16:                 return dynamic_cast<RT>(obj.eval(env));
Chris@16:             }
Chris@16:         };
Chris@16:     }
Chris@16: 
Chris@16:     template <typename T, typename U>
Chris@16:     inline actor<typename as_composite<impl::dynamic_cast_eval<T>, U>::type>
Chris@16:     dynamic_cast_(U const& obj)
Chris@16:     {
Chris@16:         return compose<impl::dynamic_cast_eval<T> >(obj);
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #endif