ceph/src/boost/libs/fusion/include/boost/fusion/container/map/detail/cpp03/begin_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   3     Copyright (c) 2009 Christopher Schmidt
   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
   9 #ifndef BOOST_FUSION_CONTAINER_MAP_DETAIL_BEGIN_IMPL_HPP
  10 #define BOOST_FUSION_CONTAINER_MAP_DETAIL_BEGIN_IMPL_HPP
  11
  12 #include <boost/fusion/support/config.hpp>
  13 #include <boost/fusion/iterator/basic_iterator.hpp>
  14
  15 namespace boost { namespace fusion { namespace extension
  16 {
  17     template <typename>
  18     struct begin_impl;
  19
  20     template <>
  21     struct begin_impl<map_tag>
  22     {
  23         template <typename Seq>
  24         struct apply
  25         {
  26             typedef
  27                 basic_iterator<
  28                     map_iterator_tag
  29                   , typename Seq::category
  30                   , Seq
  31                   , 0
  32                 >
  33             type;
  34
  35             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  36             static type
  37             call(Seq& seq)
  38             {
  39                 return type(seq,0);
  40             }
  41         };
  42     };
  43 }}}
  44
  45 #endif