#ifndef POINTEE_DWA200415_HPP

# define POINTEE_DWA200415_HPP



//

// Copyright David Abrahams 2004. Use, modification and distribution is

// subject to 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)

//

// typename pointee<P>::type provides the pointee type of P.

//

// For example, it is T for T* and X for shared_ptr<X>.

//

// http://www.boost.org/libs/iterator/doc/pointee.html

//



# include <boost/detail/is_incrementable.hpp>

# include <boost/iterator/iterator_traits.hpp>

# include <boost/type_traits/add_const.hpp>

# include <boost/type_traits/remove_cv.hpp>

# include <boost/mpl/if.hpp>

# include <boost/mpl/eval_if.hpp>



namespace boost { 



namespace detail

{

  template <class P>

  struct smart_ptr_pointee

  {

      typedef typename P::element_type type;

  };



  template <class Iterator>

  struct iterator_pointee

  {

      typedef typename iterator_traits<Iterator>::value_type value_type;

      

      struct impl

      {

          template <class T>

          static char test(T const&);

          

          static char (& test(value_type&) )[2];

          

          static Iterator& x;

      };

      

      BOOST_STATIC_CONSTANT(bool, is_constant = sizeof(impl::test(*impl::x)) == 1);

      

      typedef typename mpl::if_c<

#  if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))

          ::boost::detail::iterator_pointee<Iterator>::is_constant

#  else

          is_constant

#  endif 

        , typename add_const<value_type>::type

        , value_type

      >::type type;

  };

}



template <class P>

struct pointee

  : mpl::eval_if<

        detail::is_incrementable<P>

      , detail::iterator_pointee<P>

      , detail::smart_ptr_pointee<P>

    >

{

};

  

} // namespace boost



#endif // POINTEE_DWA200415_HPP

