detail/cpp03/convert.hpp

0001 /*=============================================================================
0002     Copyright (c) 2001-2011 Joel de Guzman
0003
0004     Distributed under the Boost Software License, Version 1.0. (See accompanying
0005     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 ==============================================================================*/
0007 #if !defined(FUSION_CONVERT_09232005_1340)
0008 #define FUSION_CONVERT_09232005_1340
0009
0010 #include <boost/fusion/support/config.hpp>
0011 #include <boost/fusion/container/map/detail/cpp03/as_map.hpp>
0012 #include <boost/fusion/container/map/detail/cpp03/convert_impl.hpp>
0013 #include <boost/fusion/container/map/detail/cpp03/map.hpp>
0014 #include <boost/fusion/sequence/intrinsic/begin.hpp>
0015 #include <boost/fusion/sequence/intrinsic/size.hpp>
0016
0017 namespace boost { namespace fusion
0018 {
0019     namespace result_of
0020     {
0021         template <typename Sequence>
0022         struct as_map
0023         {
0024             typedef typename
0025                 detail::as_map<
0026                     result_of::size<Sequence>::value
0027                   , is_base_of<
0028                         associative_tag
0029                       , typename traits::category_of<Sequence>::type>::value
0030                 >
0031             gen;
0032             typedef typename gen::
0033                 template apply<typename result_of::begin<Sequence>::type>::type
0034             type;
0035         };
0036     }
0037
0038     template <typename Sequence>
0039     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0040     inline typename result_of::as_map<Sequence>::type
0041     as_map(Sequence& seq)
0042     {
0043         typedef typename result_of::as_map<Sequence>::gen gen;
0044         return gen::call(fusion::begin(seq));
0045     }
0046
0047     template <typename Sequence>
0048     BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
0049     inline typename result_of::as_map<Sequence const>::type
0050     as_map(Sequence const& seq)
0051     {
0052         typedef typename result_of::as_map<Sequence const>::gen gen;
0053         return gen::call(fusion::begin(seq));
0054     }
0055 }}
0056
0057 #endif