ceph/src/boost/libs/fusion/include/boost/fusion/view/iterator_range/detail/begin_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(FUSION_BEGIN_IMPL_05062005_1226)
   8 #define FUSION_BEGIN_IMPL_05062005_1226
   9
  10 #include <boost/fusion/support/config.hpp>
  11
  12 namespace boost { namespace fusion
  13 {
  14     struct iterator_range_tag;
  15
  16     namespace extension
  17     {
  18         template <typename Tag>
  19         struct begin_impl;
  20
  21         template <>
  22         struct begin_impl<iterator_range_tag>
  23         {
  24             template <typename Sequence>
  25             struct apply
  26             {
  27                 typedef typename Sequence::begin_type type;
  28
  29                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  30                 static type
  31                 call(Sequence& s)
  32                 {
  33                     return s.first;
  34                 }
  35             };
  36         };
  37     }
  38 }}
  39
  40 #endif
  41
  42