/usr/include/boost/proto/detail/reverse.hpp is in libboost1.54-dev 1.54.0-4ubuntu3.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | /*=============================================================================
Copyright (c) 2001-2006 Joel de Guzman
Copyright (c) 2008 Eric Niebler
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#ifndef BOOST_PROTO_DETAIL_FUSION_REVERSE_EAH_01_22_2008
#define BOOST_PROTO_DETAIL_FUSION_REVERSE_EAH_01_22_2008
#include <boost/spirit/fusion/detail/access.hpp>
#include <boost/spirit/fusion/iterator/as_fusion_iterator.hpp>
#include <boost/spirit/fusion/iterator/detail/iterator_base.hpp>
#include <boost/spirit/fusion/sequence/detail/sequence_base.hpp>
#include <boost/spirit/fusion/iterator/next.hpp>
#include <boost/spirit/fusion/iterator/prior.hpp>
#include <boost/spirit/fusion/iterator/deref.hpp>
#include <boost/spirit/fusion/iterator/value_of.hpp>
#include <boost/spirit/fusion/sequence/begin.hpp>
#include <boost/spirit/fusion/sequence/end.hpp>
namespace boost { namespace fusion
{
struct reverse_view_tag;
struct reverse_view_iterator_tag;
template <typename First>
struct reverse_view_iterator
: iterator_base<reverse_view_iterator<First> >
{
typedef as_fusion_iterator<First> converter;
typedef typename converter::type first_type;
typedef reverse_view_iterator_tag tag;
reverse_view_iterator(First const& first)
: first(converter::convert(first)) {}
first_type first;
};
template <typename Sequence>
struct reverse_view : sequence_base<reverse_view<Sequence> >
{
typedef as_fusion_sequence<Sequence> seq_converter;
typedef typename seq_converter::type seq;
typedef reverse_view_tag tag;
typedef typename meta::begin<seq>::type first_type;
typedef typename meta::end<seq>::type last_type;
reverse_view(Sequence& seq)
: first(fusion::begin(seq))
, last(fusion::end(seq))
{}
first_type first;
last_type last;
};
namespace meta
{
template <>
struct deref_impl<reverse_view_iterator_tag>
{
template <typename Iterator>
struct apply
{
typedef typename
meta::deref<
typename meta::prior<
typename Iterator::first_type
>::type
>::type
type;
static type
call(Iterator const& i)
{
return *fusion::prior(i.first);
}
};
};
template <>
struct prior_impl<reverse_view_iterator_tag>
{
template <typename Iterator>
struct apply
{
typedef typename Iterator::first_type first_type;
typedef typename next_impl<typename first_type::tag>::
template apply<first_type>
wrapped;
typedef reverse_view_iterator<typename wrapped::type> type;
static type
call(Iterator const& i)
{
return type(wrapped::call(i.first));
}
};
};
template <>
struct next_impl<reverse_view_iterator_tag>
{
template <typename Iterator>
struct apply
{
typedef typename Iterator::first_type first_type;
typedef typename prior_impl<typename first_type::tag>::
template apply<first_type>
wrapped;
typedef reverse_view_iterator<typename wrapped::type> type;
static type
call(Iterator const& i)
{
return type(wrapped::call(i.first));
}
};
};
template <>
struct value_impl<reverse_view_iterator_tag>
{
template <typename Iterator>
struct apply
{
typedef typename
meta::value_of<
typename meta::prior<
typename Iterator::first_type
>::type
>::type
type;
};
};
template <>
struct begin_impl<reverse_view_tag>
{
template <typename Sequence>
struct apply
{
typedef reverse_view_iterator<typename Sequence::last_type> type;
static type
call(Sequence const& s)
{
return type(s.last);
}
};
};
template <>
struct end_impl<reverse_view_tag>
{
template <typename Sequence>
struct apply
{
typedef reverse_view_iterator<typename Sequence::first_type> type;
static type
call(Sequence const& s)
{
return type(s.first);
}
};
};
template <typename Sequence>
struct reverse
{
typedef reverse_view<Sequence> type;
};
}
template <typename Sequence>
inline reverse_view<Sequence const>
reverse(Sequence const& view)
{
return reverse_view<Sequence const>(view);
}
}}
#endif
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