/Src/Dependencies/Boost/boost/fusion/sequence/comparison/less_equal.hpp

 1/*=============================================================================
 2    Copyright (c) 1999-2003 Jaakko Jarvi
 3    Copyright (c) 2001-2006 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_EQUAL_05052005_0432)
 9#define FUSION_LESS_EQUAL_05052005_0432
10
11#include <boost/fusion/sequence/intrinsic/begin.hpp>
12#include <boost/fusion/sequence/intrinsic/end.hpp>
13#include <boost/fusion/sequence/intrinsic/size.hpp>
14#include <boost/fusion/sequence/comparison/enable_comparison.hpp>
15#include <boost/fusion/support/is_sequence.hpp>
16
17#if defined(FUSION_DIRECT_OPERATOR_USAGE)
18#include <boost/fusion/sequence/comparison/detail/less_equal.hpp>
19#else
20#include <boost/fusion/sequence/comparison/less.hpp>
21#endif
22
23namespace boost { namespace fusion
24{
25    template <typename Seq1, typename Seq2>
26    inline bool
27    less_equal(Seq1 const& a, Seq2 const& b)
28    {
29#if defined(FUSION_DIRECT_OPERATOR_USAGE)
30        return detail::sequence_less_equal<Seq1 const, Seq2 const>::
31            call(fusion::begin(a), fusion::begin(b));
32#else
33        return !(b < a);
34#endif
35    }
36
37    namespace operators
38    {
39#if defined(BOOST_MSVC) && (BOOST_MSVC <= 1400)
40// Workaround for  VC8.0 and VC7.1
41        template <typename Seq1, typename Seq2>
42        inline bool
43        operator<=(sequence_base<Seq1> const& a, sequence_base<Seq2> const& b)
44        {
45            return less_equal(a.derived(), b.derived());
46        }
47
48        template <typename Seq1, typename Seq2>
49        inline typename disable_if<traits::is_native_fusion_sequence<Seq2>, bool>::type
50        operator<=(sequence_base<Seq1> const& a, Seq2 const& b)
51        {
52            return less_equal(a.derived(), b);
53        }
54
55        template <typename Seq1, typename Seq2>
56        inline typename disable_if<traits::is_native_fusion_sequence<Seq1>, bool>::type
57        operator<=(Seq1 const& a, sequence_base<Seq2> const& b)
58        {
59            return less_equal(a, b.derived());
60        }
61
62#else
63// Somehow VC8.0 and VC7.1 does not like this code
64// but barfs somewhere else.
65
66        template <typename Seq1, typename Seq2>
67        inline typename
68            enable_if<
69                traits::enable_comparison<Seq1, Seq2>
70              , bool
71            >::type
72        operator<=(Seq1 const& a, Seq2 const& b)
73        {
74            return fusion::less_equal(a, b);
75        }
76#endif
77    }
78    using operators::operator<=;
79}}
80
81#endif