ceph/src/boost/boost/fusion/view/nview/detail/advance_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2009 Hartmut Kaiser
   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 #if !defined(BOOST_FUSION_NVIEW_ADVANCE_IMPL_SEP_24_2009_0212PM)
   9 #define BOOST_FUSION_NVIEW_ADVANCE_IMPL_SEP_24_2009_0212PM
  10
  11 #include <boost/fusion/support/config.hpp>
  12 #include <boost/fusion/iterator/advance.hpp>
  13
  14 namespace boost { namespace fusion
  15 {
  16     struct nview_iterator_tag;
  17
  18     template <typename Sequence, typename Pos>
  19     struct nview_iterator;
  20
  21     namespace extension
  22     {
  23         template<typename Tag>
  24         struct advance_impl;
  25
  26         template<>
  27         struct advance_impl<nview_iterator_tag>
  28         {
  29             template<typename Iterator, typename Dist>
  30             struct apply
  31             {
  32                 typedef typename Iterator::first_type iterator_type;
  33                 typedef typename Iterator::sequence_type sequence_type;
  34
  35                 typedef nview_iterator<sequence_type,
  36                     typename result_of::advance<iterator_type, Dist>::type> type;
  37
  38                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  39                 static type
  40                 call(Iterator const& i)
  41                 {
  42                     return type(i.seq);
  43                 }
  44             };
  45         };
  46     }
  47
  48 }}
  49
  50 #endif