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_NOT_EQUAL_TO_05052005_1141)
9 #define FUSION_NOT_EQUAL_TO_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, bool same_size>
21     struct sequence_not_equal_to
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
callboost::fusion::detail::sequence_not_equal_to29         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
callboost::fusion::detail::sequence_not_equal_to37         call(I1 const& a, I2 const& b, mpl::false_)
38         {
39             return extension::as_const(*a) != extension::as_const(*b)
40                 || call(fusion::next(a), fusion::next(b));
41         }
42 
43         template <typename I1, typename I2>
44         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
45         static bool
callboost::fusion::detail::sequence_not_equal_to46         call(I1 const& a, I2 const& b)
47         {
48             typename result_of::equal_to<I1, end1_type>::type eq;
49             return call(a, b, eq);
50         }
51     };
52 
53     template <typename Seq1, typename Seq2>
54     struct sequence_not_equal_to<Seq1, Seq2, false>
55     {
56         template <typename I1, typename I2>
57         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
58         static bool
callboost::fusion::detail::sequence_not_equal_to59         call(I1 const& a, I2 const& b)
60         {
61             return true;
62         }
63     };
64 }}}
65 
66 #endif
67