stc/exp/ml_stc_linux_make_v1.0/include/boost/mpl/aux_/insert_impl.hpp

   1 \r
   2 #ifndef BOOST_MPL_INSERT_IMPL_HPP_INCLUDED\r
   3 #define BOOST_MPL_INSERT_IMPL_HPP_INCLUDED\r
   4 \r
   5 // Copyright Aleksey Gurtovoy 2000-2004\r
   6 //\r
   7 // Distributed under the Boost Software License, Version 1.0. \r
   8 // (See accompanying file LICENSE_1_0.txt or copy at \r
   9 // http://www.boost.org/LICENSE_1_0.txt)\r
  10 //\r
  11 // See http://www.boost.org/libs/mpl for documentation.\r
  12 \r
  13 // $Id: insert_impl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $\r
  14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $\r
  15 // $Revision: 49267 $\r
  16 \r
  17 #include <boost/mpl/reverse_fold.hpp>\r
  18 #include <boost/mpl/iterator_range.hpp>\r
  19 #include <boost/mpl/clear.hpp>\r
  20 #include <boost/mpl/push_front.hpp>\r
  21 #include <boost/mpl/aux_/na_spec.hpp>\r
  22 #include <boost/mpl/aux_/traits_lambda_spec.hpp>\r
  23 #include <boost/type_traits/is_same.hpp>\r
  24 \r
  25 namespace boost { namespace mpl {\r
  26 \r
  27 // default implementation; conrete sequences might override it by \r
  28 // specializing either the 'insert_impl' or the primary 'insert' template\r
  29 \r
  30 template< typename Tag >\r
  31 struct insert_impl\r
  32 {\r
  33     template<\r
  34           typename Sequence\r
  35         , typename Pos\r
  36         , typename T\r
  37         >\r
  38     struct apply\r
  39     {\r
  40         typedef iterator_range<\r
  41               typename begin<Sequence>::type\r
  42             , Pos\r
  43             > first_half_;\r
  44 \r
  45         typedef iterator_range<\r
  46               Pos\r
  47             , typename end<Sequence>::type\r
  48             > second_half_;\r
  49 \r
  50         typedef typename reverse_fold<\r
  51               second_half_\r
  52             , typename clear<Sequence>::type\r
  53             , push_front<_,_>\r
  54             >::type half_sequence_;\r
  55 \r
  56         typedef typename reverse_fold<\r
  57               first_half_\r
  58             , typename push_front<half_sequence_,T>::type\r
  59             , push_front<_,_>\r
  60             >::type type;\r
  61     };\r
  62 };\r
  63 \r
  64 BOOST_MPL_ALGORITM_TRAITS_LAMBDA_SPEC(3,insert_impl)\r
  65 \r
  66 }}\r
  67 \r
  68 #endif // BOOST_MPL_INSERT_IMPL_HPP_INCLUDED\r