ceph/src/boost/boost/fusion/container/list/detail/end_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3     Copyright (c) 2005 Eric Niebler
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #if !defined(FUSION_END_IMPL_07172005_0828)
   9 #define FUSION_END_IMPL_07172005_0828
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/mpl/if.hpp>
  13 #include <boost/type_traits/is_const.hpp>
  14
  15 namespace boost { namespace fusion
  16 {
  17     struct nil_;
  18
  19     struct cons_tag;
  20
  21     template <typename Car, typename Cdr>
  22     struct cons;
  23
  24     template <typename Cons>
  25     struct cons_iterator;
  26
  27     namespace extension
  28     {
  29         template <typename Tag>
  30         struct end_impl;
  31
  32         template <>
  33         struct end_impl<cons_tag>
  34         {
  35             template <typename Sequence>
  36             struct apply
  37             {
  38                 typedef cons_iterator<
  39                     typename mpl::if_<is_const<Sequence>, nil_ const, nil_>::type>
  40                 type;
  41
  42                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  43                 static type
  44                 call(Sequence&)
  45                 {
  46                     return type();
  47                 }
  48             };
  49         };
  50     }
  51 }}
  52
  53 #endif