boost_tuple/detail/size_impl.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(BOOST_FUSION_SIZE_IMPL_09272006_0724)
0008 #define BOOST_FUSION_SIZE_IMPL_09272006_0724
0009
0010 #include <boost/fusion/support/config.hpp>
0011 #include <boost/tuple/tuple.hpp>
0012 #include <boost/mpl/int.hpp>
0013
0014 namespace boost { namespace fusion
0015 {
0016     struct boost_tuple_tag;
0017
0018     namespace extension
0019     {
0020         template<typename T>
0021         struct size_impl;
0022
0023         template <>
0024         struct size_impl<boost_tuple_tag>
0025         {
0026             template <typename Sequence>
0027             struct apply : mpl::int_<tuples::length<Sequence>::value> {};
0028         };
0029     }
0030 }}
0031
0032 #endif