ceph/src/boost/libs/fusion/include/boost/fusion/sequence/intrinsic/detail/segmented_end_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2011 Eric Niebler
   3
   4     Distributed under the Boost Software License, Version 1.0. (See accompanying
   5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   6 ==============================================================================*/
   7 #if !defined(BOOST_FUSION_SEGMENTED_END_IMPL_HPP_INCLUDED)
   8 #define BOOST_FUSION_SEGMENTED_END_IMPL_HPP_INCLUDED
   9
  10 #include <boost/fusion/support/config.hpp>
  11 #include <boost/mpl/assert.hpp>
  12 #include <boost/type_traits/add_const.hpp>
  13 #include <boost/type_traits/remove_reference.hpp>
  14 #include <boost/fusion/sequence/intrinsic_fwd.hpp>
  15 #include <boost/fusion/container/list/cons_fwd.hpp>
  16 #include <boost/fusion/support/is_segmented.hpp>
  17
  18 namespace boost { namespace fusion
  19 {
  20     template <typename First, typename Last>
  21     struct iterator_range;
  22 }}
  23
  24 namespace boost { namespace fusion { namespace detail
  25 {
  26     //auto segmented_end_impl( seq, stack )
  27     //{
  28     //    assert(is_segmented(seq));
  29     //    auto it = end(segments(seq));
  30     //    return cons(iterator_range(it, it), stack);
  31     //}
  32
  33     template <typename Sequence, typename Stack>
  34     struct segmented_end_impl
  35     {
  36         BOOST_MPL_ASSERT((traits::is_segmented<Sequence>));
  37
  38         typedef
  39             typename result_of::end<
  40                 typename remove_reference<
  41                     typename add_const<
  42                         typename result_of::segments<Sequence>::type
  43                     >::type
  44                 >::type
  45             >::type
  46         end_type;
  47
  48         typedef iterator_range<end_type, end_type>  pair_type;
  49         typedef cons<pair_type, Stack>              type;
  50
  51         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  52         static pair_type make_pair(end_type end)
  53         {
  54             return pair_type(end, end);
  55         }
  56
  57         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  58         static type call(Sequence & seq, Stack stack)
  59         {
  60             return type(
  61                 make_pair(fusion::end(fusion::segments(seq))),
  62                 stack);
  63         }
  64     };
  65
  66 }}}
  67
  68 #endif