ceph/src/boost/libs/fusion/include/boost/fusion/adapted/std_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_0940)
   8 #define BOOST_FUSION_CONVERT_IMPL_10172012_0940
   9
  10 #include <boost/fusion/support/config.hpp>
  11 #include <boost/fusion/adapted/std_tuple/detail/build_std_tuple.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 std_tuple_tag;
  18
  19     namespace extension
  20     {
  21         template <typename T>
  22         struct convert_impl;
  23
  24         template <>
  25         struct convert_impl<std_tuple_tag>
  26         {
  27             template <typename Sequence>
  28             struct apply
  29             {
  30                 typedef detail::build_std_tuple<
  31                     typename result_of::begin<Sequence>::type
  32                   , typename result_of::end<Sequence>::type
  33                 > gen;
  34
  35                 typedef typename gen::type type;
  36
  37                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  38                 static type
  39                 call(Sequence& seq)
  40                 {
  41                     return gen::call(begin(seq), end(seq));
  42                 }
  43             };
  44         };
  45     }
  46 }}
  47
  48 #endif