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

   1 /*=============================================================================
   2     Copyright (c) 2005 Joel de Guzman
   3     Copyright (c) 2005 Eric Niebler
   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_VALUE_OF_IMPL_07172005_0838)
   9 #define FUSION_VALUE_OF_IMPL_07172005_0838
  10
  11 namespace boost { namespace fusion
  12 {
  13     struct cons_iterator_tag;
  14
  15     namespace extension
  16     {
  17         template <typename Tag>
  18         struct value_of_impl;
  19
  20         template <>
  21         struct value_of_impl<cons_iterator_tag>
  22         {
  23             template <typename Iterator>
  24             struct apply
  25             {
  26                 typedef typename Iterator::cons_type cons_type;
  27                 typedef typename cons_type::car_type type;
  28             };
  29         };
  30     }
  31
  32 }}
  33
  34 #endif
  35
  36