cpp98/impl/later_result.hpp

0001 #ifndef BOOST_METAPARSE_V1_CPP98_IMPL_LATER_RESULT_HPP
0002 #define BOOST_METAPARSE_V1_CPP98_IMPL_LATER_RESULT_HPP
0003
0004 // Copyright Abel Sinkovics (abel@sinkovics.hu)  2015.
0005 // Distributed under the Boost Software License, Version 1.0.
0006 //    (See accompanying file LICENSE_1_0.txt or copy at
0007 //          http://www.boost.org/LICENSE_1_0.txt)
0008
0009 #include <boost/metaparse/v1/get_position.hpp>
0010
0011 #include <boost/mpl/if.hpp>
0012 #include <boost/mpl/less.hpp>
0013
0014 namespace boost
0015 {
0016   namespace metaparse
0017   {
0018     namespace v1
0019     {
0020       namespace impl
0021       {
0022         template <class R1, class R2>
0023         struct later_result :
0024           boost::mpl::if_<
0025             typename boost::mpl::less<
0026               typename get_position<R2>::type,
0027               typename get_position<R1>::type
0028             >::type,
0029             R1,
0030             R2
0031           >
0032         {};
0033       }
0034     }
0035   }
0036 }
0037
0038 #endif
0039