ceph/src/boost/libs/fusion/include/boost/fusion/adapted/std_tuple/detail/size_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2011 Joel de Guzman
   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_SIZE_IMPL_09242011_1744)
   8 #define BOOST_FUSION_SIZE_IMPL_09242011_1744
   9
  10 #include <boost/fusion/support/config.hpp>
  11 #include <tuple>
  12 #include <boost/mpl/int.hpp>
  13 #include <boost/type_traits/remove_const.hpp>
  14
  15 namespace boost { namespace fusion
  16 {
  17     struct std_tuple_tag;
  18
  19     namespace extension
  20     {
  21         template<typename T>
  22         struct size_impl;
  23
  24         template <>
  25         struct size_impl<std_tuple_tag>
  26         {
  27             template <typename Sequence>
  28             struct apply :
  29                 mpl::int_<std::tuple_size<
  30                     typename remove_const<Sequence>::type>::value
  31                 >
  32             {};
  33         };
  34     }
  35 }}
  36
  37 #endif