sl@0: #ifndef POINTEE_DWA200415_HPP
sl@0: # define POINTEE_DWA200415_HPP
sl@0: 
sl@0: //
sl@0: // Copyright David Abrahams 2004. Use, modification and distribution is
sl@0: // subject to the Boost Software License, Version 1.0. (See accompanying
sl@0: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
sl@0: //
sl@0: // typename pointee<P>::type provides the pointee type of P.
sl@0: //
sl@0: // For example, it is T for T* and X for shared_ptr<X>.
sl@0: //
sl@0: // http://www.boost.org/libs/iterator/doc/pointee.html
sl@0: //
sl@0: 
sl@0: # include <boost/detail/is_incrementable.hpp>
sl@0: # include <boost/iterator/iterator_traits.hpp>
sl@0: # include <boost/type_traits/add_const.hpp>
sl@0: # include <boost/type_traits/remove_cv.hpp>
sl@0: # include <boost/mpl/if.hpp>
sl@0: # include <boost/mpl/eval_if.hpp>
sl@0: 
sl@0: namespace boost { 
sl@0: 
sl@0: namespace detail
sl@0: {
sl@0:   template <class P>
sl@0:   struct smart_ptr_pointee
sl@0:   {
sl@0:       typedef typename P::element_type type;
sl@0:   };
sl@0: 
sl@0:   template <class Iterator>
sl@0:   struct iterator_pointee
sl@0:   {
sl@0:       typedef typename iterator_traits<Iterator>::value_type value_type;
sl@0:       
sl@0:       struct impl
sl@0:       {
sl@0:           template <class T>
sl@0:           static char test(T const&);
sl@0:           
sl@0:           static char (& test(value_type&) )[2];
sl@0:           
sl@0:           static Iterator& x;
sl@0:       };
sl@0:       
sl@0:       BOOST_STATIC_CONSTANT(bool, is_constant = sizeof(impl::test(*impl::x)) == 1);
sl@0:       
sl@0:       typedef typename mpl::if_c<
sl@0: #  if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
sl@0:           ::boost::detail::iterator_pointee<Iterator>::is_constant
sl@0: #  else
sl@0:           is_constant
sl@0: #  endif 
sl@0:         , typename add_const<value_type>::type
sl@0:         , value_type
sl@0:       >::type type;
sl@0:   };
sl@0: }
sl@0: 
sl@0: template <class P>
sl@0: struct pointee
sl@0:   : mpl::eval_if<
sl@0:         detail::is_incrementable<P>
sl@0:       , detail::iterator_pointee<P>
sl@0:       , detail::smart_ptr_pointee<P>
sl@0:     >
sl@0: {
sl@0: };
sl@0:   
sl@0: } // namespace boost
sl@0: 
sl@0: #endif // POINTEE_DWA200415_HPP