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1 | /*============================================================================= |
2 | Copyright (c) 1999-2003 Jaakko Jarvi | |
3 | Copyright (c) 2001-2011 Joel de Guzman | |
4 | ||
5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
7 | ==============================================================================*/ | |
8 | #if !defined(FUSION_LESS_05052005_1141) | |
9 | #define FUSION_LESS_05052005_1141 | |
10 | ||
11 | #include <boost/fusion/support/config.hpp> | |
12 | #include <boost/mpl/bool.hpp> | |
13 | #include <boost/fusion/iterator/deref.hpp> | |
14 | #include <boost/fusion/iterator/next.hpp> | |
15 | #include <boost/fusion/iterator/equal_to.hpp> | |
16 | #include <boost/fusion/support/as_const.hpp> | |
17 | ||
18 | namespace boost { namespace fusion { namespace detail | |
19 | { | |
20 | template <typename Seq1, typename Seq2> | |
21 | struct sequence_less | |
22 | { | |
23 | typedef typename result_of::end<Seq1>::type end1_type; | |
24 | typedef typename result_of::end<Seq2>::type end2_type; | |
25 | ||
26 | template <typename I1, typename I2> | |
27 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
28 | static bool | |
29 | call(I1 const&, I2 const&, mpl::true_) | |
30 | { | |
31 | return false; | |
32 | } | |
33 | ||
34 | template <typename I1, typename I2> | |
35 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
36 | static bool | |
37 | call(I1 const& a, I2 const& b, mpl::false_) | |
38 | { | |
39 | return extension::as_const(*a) < extension::as_const(*b) || | |
40 | (!(extension::as_const(*b) < extension::as_const(*a)) && | |
41 | call(fusion::next(a), fusion::next(b))); | |
42 | } | |
43 | ||
44 | template <typename I1, typename I2> | |
45 | BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
46 | static bool | |
47 | call(I1 const& a, I2 const& b) | |
48 | { | |
49 | typename result_of::equal_to<I1, end1_type>::type eq; | |
50 | return call(a, b, eq); | |
51 | } | |
52 | }; | |
53 | }}} | |
54 | ||
55 | #endif |