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113 lines
2.6 KiB
C++
113 lines
2.6 KiB
C++
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#ifndef BOOST_MPL_EQUAL_HPP_INCLUDED
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#define BOOST_MPL_EQUAL_HPP_INCLUDED
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// Copyright Aleksey Gurtovoy 2000-2004
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/mpl for documentation.
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// $Id$
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// $Date$
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// $Revision$
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#include <boost/mpl/aux_/iter_fold_if_impl.hpp>
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#include <boost/mpl/aux_/iter_apply.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/not.hpp>
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#include <boost/mpl/begin_end.hpp>
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#include <boost/mpl/next.hpp>
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#include <boost/mpl/always.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/lambda.hpp>
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#include <boost/mpl/bind.hpp>
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#include <boost/mpl/apply.hpp>
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#include <boost/mpl/void.hpp>
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#include <boost/mpl/aux_/na_spec.hpp>
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#include <boost/mpl/aux_/lambda_support.hpp>
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#include <boost/mpl/aux_/msvc_eti_base.hpp>
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace mpl {
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namespace aux {
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template<
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typename Predicate
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, typename LastIterator1
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, typename LastIterator2
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>
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struct equal_pred
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{
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template<
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typename Iterator2
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, typename Iterator1
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>
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struct apply
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{
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typedef typename and_<
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not_< is_same<Iterator1,LastIterator1> >
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, not_< is_same<Iterator2,LastIterator2> >
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, aux::iter_apply2<Predicate,Iterator1,Iterator2>
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>::type type;
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};
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};
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template<
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typename Sequence1
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, typename Sequence2
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, typename Predicate
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>
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struct equal_impl
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{
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typedef typename begin<Sequence1>::type first1_;
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typedef typename begin<Sequence2>::type first2_;
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typedef typename end<Sequence1>::type last1_;
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typedef typename end<Sequence2>::type last2_;
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typedef aux::iter_fold_if_impl<
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first1_
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, first2_
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, next<>
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, protect< aux::equal_pred<Predicate,last1_,last2_> >
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, void_
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, always<false_>
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> fold_;
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typedef typename fold_::iterator iter1_;
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typedef typename fold_::state iter2_;
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typedef and_<
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is_same<iter1_,last1_>
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, is_same<iter2_,last2_>
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> result_;
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typedef typename result_::type type;
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};
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} // namespace aux
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template<
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typename BOOST_MPL_AUX_NA_PARAM(Sequence1)
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, typename BOOST_MPL_AUX_NA_PARAM(Sequence2)
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, typename Predicate = is_same<_,_>
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>
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struct equal
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: aux::msvc_eti_base<
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typename aux::equal_impl<Sequence1,Sequence2,Predicate>::type
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>::type
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{
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BOOST_MPL_AUX_LAMBDA_SUPPORT(2,equal,(Sequence1,Sequence2))
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};
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BOOST_MPL_AUX_NA_SPEC(2, equal)
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}}
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#endif // BOOST_MPL_EQUAL_HPP_INCLUDED
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