3rdparty/boost/boost/fusion/algorithm/transformation/insert_range.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_INSERT_RANGE_009172005_1147)
   8 #define FUSION_INSERT_RANGE_009172005_1147
   9
  10 #include <boost/fusion/support/config.hpp>
  11 #include <boost/fusion/iterator/mpl/convert_iterator.hpp>
  12 #include <boost/fusion/view/joint_view/joint_view.hpp>
  13 #include <boost/fusion/view/iterator_range/iterator_range.hpp>
  14 #include <boost/fusion/support/detail/as_fusion_element.hpp>
  15 #include <boost/fusion/sequence/intrinsic/begin.hpp>
  16 #include <boost/fusion/sequence/intrinsic/end.hpp>
  17 #include <boost/fusion/adapted/mpl/mpl_iterator.hpp>
  18
  19 namespace boost { namespace fusion
  20 {
  21     namespace result_of
  22     {
  23         template <typename Sequence, typename Position, typename Range>
  24         struct insert_range
  25         {
  26             typedef typename convert_iterator<Position>::type pos_type;
  27             typedef typename result_of::begin<Sequence>::type first_type;
  28             typedef typename result_of::end<Sequence>::type last_type;
  29
  30             typedef iterator_range<first_type, pos_type> left_type;
  31             typedef iterator_range<pos_type, last_type> right_type;
  32             typedef joint_view<left_type, Range> left_insert_type;
  33             typedef joint_view<left_insert_type, right_type> type;
  34         };
  35     }
  36
  37     template <typename Sequence, typename Position, typename Range>
  38     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
  39     inline typename result_of::insert_range<Sequence const, Position, Range const>::type
  40     insert_range(Sequence const& seq, Position const& pos, Range const& range)
  41     {
  42         typedef result_of::insert_range<Sequence const, Position, Range const> result_of;
  43         typedef typename result_of::left_type left_type;
  44         typedef typename result_of::right_type right_type;
  45         typedef typename result_of::left_insert_type left_insert_type;
  46         typedef typename result_of::type result;
  47
  48         left_type left(fusion::begin(seq), convert_iterator<Position>::call(pos));
  49         right_type right(convert_iterator<Position>::call(pos), fusion::end(seq));
  50         left_insert_type left_insert(left, range);
  51         return result(left_insert, right);
  52     }
  53 }}
  54
  55 #endif
  56