[857] | 1 | /*=============================================================================
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| 2 | Copyright (c) 2003 Joel de Guzman
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| 3 | Copyright (c) 2004 Peder Holt
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| 4 |
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| 5 | Use, modification and distribution is subject to the Boost Software
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| 6 | License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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| 7 | http://www.boost.org/LICENSE_1_0.txt)
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| 8 | ==============================================================================*/
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| 9 | #if !defined(FUSION_ALGORITHM_REMOVE_HPP)
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| 10 | #define FUSION_ALGORITHM_REMOVE_HPP
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| 11 |
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| 12 | #include <boost/spirit/fusion/sequence/filter_view.hpp>
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| 13 | #include <boost/mpl/not.hpp>
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| 14 | #include <boost/type_traits/is_same.hpp>
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| 15 |
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| 16 | namespace boost { namespace fusion
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| 17 | {
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| 18 | namespace meta
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| 19 | {
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| 20 | template <typename Sequence, typename T>
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| 21 | struct remove
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| 22 | {
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| 23 | typedef filter_view<Sequence, mpl::not_<is_same<mpl::_, T> > > type;
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| 24 | };
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| 25 | }
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| 26 |
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| 27 | namespace function
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| 28 | {
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| 29 | struct remove
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| 30 | {
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| 31 | template <typename Sequence, typename T>
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| 32 | struct apply : meta::remove<Sequence, T> {};
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| 33 |
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| 34 | template <typename Sequence, typename T>
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| 35 | inline filter_view<
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| 36 | Sequence const
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| 37 | , mpl::not_<is_same<mpl::_, typename T::type> > >
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| 38 | operator()(Sequence const& seq, T) const
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| 39 | {
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| 40 | return filter_view<
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| 41 | Sequence const
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| 42 | , mpl::not_<is_same<mpl::_, BOOST_DEDUCED_TYPENAME T::type>
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| 43 | > >(seq);
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| 44 | }
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| 45 |
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| 46 | template <typename Sequence, typename T>
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| 47 | inline filter_view<
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| 48 | Sequence
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| 49 | , mpl::not_<is_same<mpl::_, typename T::type> > >
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| 50 | operator()(Sequence& seq, T) const
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| 51 | {
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| 52 | return filter_view<
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| 53 | Sequence
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| 54 | , mpl::not_<is_same<mpl::_, BOOST_DEDUCED_TYPENAME T::type>
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| 55 | > >(seq);
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| 56 | }
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| 57 | };
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| 58 | }
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| 59 |
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| 60 | function::remove const remove = function::remove();
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| 61 | }}
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| 62 |
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| 63 | #endif
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| 64 |
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