ceph/src/boost/libs/fusion/include/boost/fusion/adapted/boost_tuple/detail/convert_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2012-2014 Kohei Takahashi
   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_CONVERT_IMPL_10172012_0120)
   8 #define BOOST_FUSION_CONVERT_IMPL_10172012_0120
   9
  10 #include <boost/tuple/tuple.hpp>
  11 #include <boost/fusion/adapted/boost_tuple/detail/build_cons.hpp>
  12 #include <boost/fusion/sequence/intrinsic/begin.hpp>
  13 #include <boost/fusion/sequence/intrinsic/end.hpp>
  14
  15 namespace boost { namespace fusion
  16 {
  17     struct boost_tuple_tag;
  18
  19     namespace extension
  20     {
  21         template <typename T>
  22         struct convert_impl;
  23
  24         template <>
  25         struct convert_impl<boost_tuple_tag>
  26         {
  27             template <typename Sequence>
  28             struct apply
  29             {
  30                 typedef typename
  31                     detail::build_tuple_cons<
  32                         typename result_of::begin<Sequence>::type
  33                       , typename result_of::end<Sequence>::type
  34                     >
  35                 build_tuple_cons;
  36
  37                 typedef typename build_tuple_cons::type type;
  38
  39                 BOOST_FUSION_GPU_ENABLED
  40                 static type
  41                 call(Sequence& seq)
  42                 {
  43                     return build_tuple_cons::call(fusion::begin(seq), fusion::end(seq));
  44                 }
  45             };
  46         };
  47     }
  48 }}
  49
  50 #endif