forked from boostorg/fusion
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/*=============================================================================
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Copyright (c) 1999-2003 Jaakko Jarvi
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Copyright (c) 2001-2011 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_LESS_EQUAL_05052005_0432)
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#define FUSION_LESS_EQUAL_05052005_0432
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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#include <boost/fusion/sequence/comparison/enable_comparison.hpp>
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#include <boost/fusion/support/is_sequence.hpp>
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#if defined(FUSION_DIRECT_OPERATOR_USAGE)
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#include <boost/fusion/sequence/comparison/detail/less_equal.hpp>
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#else
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#include <boost/fusion/sequence/comparison/less.hpp>
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#endif
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namespace boost { namespace fusion
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{
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template <typename Seq1, typename Seq2>
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inline bool
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less_equal(Seq1 const& a, Seq2 const& b)
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{
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#if defined(FUSION_DIRECT_OPERATOR_USAGE)
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return detail::sequence_less_equal<Seq1 const, Seq2 const>::
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call(fusion::begin(a), fusion::begin(b));
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#else
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return !(b < a);
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#endif
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}
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namespace operators
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{
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#if defined(BOOST_MSVC) && (BOOST_MSVC <= 1400)
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// Workaround for VC8.0 and VC7.1
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template <typename Seq1, typename Seq2>
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inline bool
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operator<=(sequence_base<Seq1> const& a, sequence_base<Seq2> const& b)
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{
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return less_equal(a.derived(), b.derived());
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}
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template <typename Seq1, typename Seq2>
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inline typename disable_if<traits::is_native_fusion_sequence<Seq2>, bool>::type
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operator<=(sequence_base<Seq1> const& a, Seq2 const& b)
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{
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return less_equal(a.derived(), b);
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}
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template <typename Seq1, typename Seq2>
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inline typename disable_if<traits::is_native_fusion_sequence<Seq1>, bool>::type
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operator<=(Seq1 const& a, sequence_base<Seq2> const& b)
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{
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return less_equal(a, b.derived());
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}
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#else
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// Somehow VC8.0 and VC7.1 does not like this code
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// but barfs somewhere else.
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template <typename Seq1, typename Seq2>
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inline typename
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enable_if<
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traits::enable_comparison<Seq1, Seq2>
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, bool
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>::type
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operator<=(Seq1 const& a, Seq2 const& b)
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{
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return fusion::less_equal(a, b);
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}
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#endif
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}
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using operators::operator<=;
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}}
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#endif
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