forked from boostorg/fusion
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2006 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_NONE_07062005_1126)
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#define FUSION_NONE_07062005_1126
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#include <boost/mpl/bool.hpp>
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#include <boost/fusion/iterator/equal_to.hpp>
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#include <boost/fusion/iterator/next.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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namespace boost { namespace fusion { namespace detail
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{
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template <typename First, typename Last, typename F>
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inline bool
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none(First const&, Last const&, F const&, mpl::true_)
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{
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return true;
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}
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template <typename First, typename Last, typename F>
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inline bool
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none(First const& first, Last const& last, F& f, mpl::false_)
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{
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typename result_of::deref<First>::type x = *first;
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return !f(x) &&
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detail::none(
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fusion::next(first)
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, last
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, f
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, result_of::equal_to<typename result_of::next<First>::type, Last>());
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}
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}}}
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#endif
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