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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman | |
3 | ||
4 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | ==============================================================================*/ | |
7 | #if !defined(FUSION_ENABLE_COMPARISON_09232005_1958) | |
8 | #define FUSION_ENABLE_COMPARISON_09232005_1958 | |
9 | ||
10 | #include <boost/fusion/support/config.hpp> | |
11 | #include <boost/mpl/or.hpp> | |
12 | #include <boost/mpl/and.hpp> | |
13 | #include <boost/mpl/not.hpp> | |
14 | #include <boost/mpl/equal_to.hpp> | |
15 | #include <boost/fusion/support/sequence_base.hpp> | |
16 | #include <boost/fusion/support/is_sequence.hpp> | |
17 | #include <boost/fusion/sequence/intrinsic/size.hpp> | |
18 | ||
19 | namespace boost { namespace fusion { namespace traits | |
20 | { | |
21 | template <typename Seq1, typename Seq2, typename Enable = void> | |
22 | struct enable_equality | |
23 | : mpl::or_<traits::is_sequence<Seq1>, traits::is_sequence<Seq2> > | |
24 | {}; | |
25 | ||
26 | template <typename Seq1, typename Seq2, typename Enable = void> | |
27 | struct enable_comparison | |
28 | : mpl::and_< | |
29 | mpl::or_<traits::is_sequence<Seq1>, traits::is_sequence<Seq2> > | |
30 | , mpl::equal_to<result_of::size<Seq1>, result_of::size<Seq2> > | |
31 | > | |
32 | {}; | |
33 | }}} | |
34 | ||
35 | #endif |