// Copyright David Abrahams 2004. 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)

#ifndef VALUE_ARG_DWA2004312_HPP

# define VALUE_ARG_DWA2004312_HPP



# include <boost/python/detail/copy_ctor_mutates_rhs.hpp>

# include <boost/mpl/if.hpp>

# include <boost/type_traits/add_reference.hpp>

# include <boost/type_traits/add_const.hpp>



namespace boost { namespace python { namespace detail { 



template <class T>

struct value_arg

  : mpl::if_<

        copy_ctor_mutates_rhs<T>

      , T

      , typename add_reference<

            typename add_const<T>::type

        >::type

  >

{};

  

}}} // namespace boost::python::detail



#endif // VALUE_ARG_DWA2004312_HPP

