boost/fusion/container/list/detail/convert_impl.hpp

   1 /*=============================================================================
   2     Copyright (c) 2001-2006 Joel de Guzman
   3     Copyright (c) 2005-2006 Dan Marsden
   4
   5     Distributed under the Boost Software License, Version 1.0. (See accompanying
   6     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   7 ==============================================================================*/
   8 #if !defined(FUSION_CONVERT_IMPL_09232005_1215)
   9 #define FUSION_CONVERT_IMPL_09232005_1215
  10
  11 #include <boost/fusion/container/list/cons.hpp>
  12 #include <boost/fusion/container/list/detail/build_cons.hpp>
  13 #include <boost/fusion/sequence/intrinsic/empty.hpp>
  14 #include <boost/fusion/sequence/intrinsic/begin.hpp>
  15 #include <boost/fusion/sequence/intrinsic/end.hpp>
  16
  17 namespace boost { namespace fusion
  18 {
  19     struct cons_tag;
  20
  21     namespace extension
  22     {
  23         template <typename T>
  24         struct convert_impl;
  25
  26         template <>
  27         struct convert_impl<cons_tag>
  28         {
  29             template <typename Sequence>
  30             struct apply
  31             {
  32                 typedef typename
  33                     detail::build_cons<
  34                         typename result_of::begin<Sequence>::type
  35                       , typename result_of::end<Sequence>::type
  36                     >
  37                 build_cons;
  38
  39                 typedef typename build_cons::type type;
  40
  41                 static type
  42                 call(Sequence& seq)
  43                 {
  44                     return build_cons::call(fusion::begin(seq), fusion::end(seq));
  45                 }
  46             };
  47         };
  48     }
  49 }}
  50
  51 #endif