text: /*=============================================================================
      Copyright (c) 2001-2011 Joel de Guzman
  
      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)
  ==============================================================================*/
  #if !defined(FUSION_END_04052005_1141)
  #define FUSION_END_04052005_1141
  
  #include <boost/fusion/support/config.hpp>
  #include <boost/utility/enable_if.hpp>
  #include <boost/mpl/empty_base.hpp>
  #include <boost/mpl/if.hpp>
  #include <boost/fusion/sequence/intrinsic_fwd.hpp>
  #include <boost/fusion/support/tag_of.hpp>
  #include <boost/fusion/support/is_sequence.hpp>
  #include <boost/fusion/support/is_segmented.hpp>
  #include <boost/fusion/sequence/intrinsic/detail/segmented_end.hpp>
  
  namespace boost { namespace fusion
  {
      // Special tags:
      struct sequence_facade_tag;
      struct boost_tuple_tag; // boost::tuples::tuple tag
      struct boost_array_tag; // boost::array tag
      struct mpl_sequence_tag; // mpl sequence tag
      struct std_pair_tag; // std::pair tag
  
      namespace extension
      {
          template <typename Tag>
          struct end_impl
          {
              template <typename Sequence>
              struct apply
                : mpl::if_<
                      traits::is_segmented<Sequence>
                    , detail::segmented_end<Sequence>
                    , mpl::empty_base
                  >::type
              {};
          };
  
          template <>
          struct end_impl<sequence_facade_tag>
          {
              template <typename Sequence>
              struct apply : Sequence::template end<Sequence> {};
          };
  
          template <>
          struct end_impl<boost_tuple_tag>;
  
          template <>
          struct end_impl<boost_array_tag>;
  
          template <>
          struct end_impl<mpl_sequence_tag>;
  
          template <>
          struct end_impl<std_pair_tag>;
      }
  
      namespace result_of
      {
          template <typename Sequence>
          struct end
              : extension::end_impl<typename detail::tag_of<Sequence>::type>::
                  template apply<Sequence>
          {};
      }
  
      template <typename Sequence>
      BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
      inline typename
          lazy_enable_if<
              traits::is_sequence<Sequence>
            , result_of::end<Sequence>
          >::type const
      end(Sequence& seq)
      {
          return result_of::end<Sequence>::call(seq);
      }
  
      template <typename Sequence>
      BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
      inline typename
          lazy_enable_if<
              traits::is_sequence<Sequence>
            , result_of::end<Sequence const>
          >::type const
      end(Sequence const& seq)
      {
          return result_of::end<Sequence const>::call(seq);
      }
  }}
  
  #endif
  