ceph/src/boost/libs/fusion/include/boost/fusion/adapted/array/deref_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2010 Christopher Schmidt
   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
   8 #ifndef BOOST_FUSION_ADAPTED_ARRAY_DEREF_IMPL_HPP
   9 #define BOOST_FUSION_ADAPTED_ARRAY_DEREF_IMPL_HPP
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/type_traits/add_reference.hpp>
  13 #include <boost/type_traits/remove_extent.hpp>
  14
  15 namespace boost { namespace fusion { namespace extension
  16 {
  17     template <typename>
  18     struct deref_impl;
  19
  20     template <>
  21     struct deref_impl<po_array_iterator_tag>
  22     {
  23         template <typename It>
  24         struct apply
  25         {
  26             typedef typename
  27                 add_reference<
  28                     typename remove_extent<typename It::seq_type>::type
  29                 >::type
  30             type;
  31
  32             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  33             static type
  34             call(It const& it)
  35             {
  36                 return (*it.seq)[It::index::value];
  37             }
  38         };
  39     };
  40 }}}
  41
  42 #endif