| /*============================================================================= |
| Copyright (c) 2001-2006 Joel de Guzman |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| ==============================================================================*/ |
| #if !defined(FUSION_ENABLE_COMPARISON_09232005_1958) |
| #define FUSION_ENABLE_COMPARISON_09232005_1958 |
| |
| #include <boost/mpl/or.hpp> |
| #include <boost/mpl/and.hpp> |
| #include <boost/mpl/not.hpp> |
| #include <boost/mpl/equal_to.hpp> |
| #include <boost/fusion/support/is_sequence.hpp> |
| #include <boost/fusion/sequence/intrinsic/size.hpp> |
| #include <boost/fusion/support/detail/is_mpl_sequence.hpp> |
| |
| namespace boost { namespace fusion { namespace detail |
| { |
| template <typename Sequence> |
| struct is_native_fusion_sequence : is_base_of<sequence_root, Sequence> {}; |
| |
| template <typename Seq1, typename Seq2> |
| struct enable_equality |
| : mpl::or_<is_native_fusion_sequence<Seq1>, is_native_fusion_sequence<Seq2> > |
| {}; |
| |
| template <typename Seq1, typename Seq2> |
| struct enable_comparison |
| : mpl::and_< |
| mpl::or_<is_native_fusion_sequence<Seq1>, is_native_fusion_sequence<Seq2> > |
| , mpl::equal_to<result_of::size<Seq1>, result_of::size<Seq2> > |
| > |
| {}; |
| |
| }}} |
| |
| #endif |
