/usr/include/boost/phoenix/statement/switch.hpp is in libboost1.54-dev 1.54.0-4ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 | /*==============================================================================
Copyright (c) 2001-2010 Joel de Guzman
Copyright (c) 2010 Thomas Heller
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_PHOENIX_STATEMENT_SWITCH_HPP
#define BOOST_PHOENIX_STATEMENT_SWITCH_HPP
#include <boost/phoenix/core/limits.hpp>
#include <boost/fusion/iterator/advance.hpp>
#include <boost/phoenix/core/call.hpp>
#include <boost/phoenix/core/expression.hpp>
#include <boost/phoenix/core/meta_grammar.hpp>
#include <boost/phoenix/core/is_nullary.hpp>
#include <boost/phoenix/support/iterate.hpp>
#include <boost/proto/make_expr.hpp>
#include <boost/proto/fusion.hpp>
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4065) // switch statement contains 'default' but no 'case' labels
#endif
BOOST_PHOENIX_DEFINE_EXPRESSION(
(boost)(phoenix)(switch_case)
, (proto::terminal<proto::_>)
(meta_grammar)
)
BOOST_PHOENIX_DEFINE_EXPRESSION(
(boost)(phoenix)(switch_default_case)
, (meta_grammar)
)
namespace boost { namespace phoenix
{
namespace detail
{
struct switch_case_grammar;
struct switch_case_with_default_grammar;
struct switch_grammar
: proto::or_<
proto::when<
detail::switch_case_grammar
, mpl::false_()
>
, proto::when<
detail::switch_case_with_default_grammar
, mpl::true_()
>
>
{};
}
namespace detail
{
struct switch_case_is_nullary
: proto::or_<
proto::when<
proto::comma<
switch_case_is_nullary
, proto::or_<phoenix::rule::switch_default_case, phoenix::rule::switch_case>
>
, mpl::and_<
switch_case_is_nullary(
proto::_child_c<0>
, proto::_state
)
, switch_case_is_nullary(
proto::_child_c<1>
, proto::_state
)
>()
>
, proto::when<
proto::or_<phoenix::rule::switch_default_case, phoenix::rule::switch_case>
, evaluator(proto::_child_c<0>, proto::_state)
>
>
{};
struct switch_case_grammar
: proto::or_<
proto::comma<switch_case_grammar, phoenix::rule::switch_case>
, proto::when<phoenix::rule::switch_case, proto::_>
>
{};
struct switch_case_with_default_grammar
: proto::or_<
proto::comma<switch_case_grammar, phoenix::rule::switch_default_case>
, proto::when<phoenix::rule::switch_default_case, proto::_>
>
{};
struct switch_size
: proto::or_<
proto::when<
proto::comma<switch_size, proto::_>
, mpl::next<switch_size(proto::_left)>()
>
, proto::when<proto::_, mpl::int_<1>()>
>
{};
}
}}
BOOST_PHOENIX_DEFINE_EXPRESSION(
(boost)(phoenix)(switch_)
, (meta_grammar) // Cond
(detail::switch_grammar) // Cases
)
namespace boost { namespace phoenix {
template <typename Dummy>
struct is_nullary::when<rule::switch_, Dummy>
: proto::and_<
evaluator(proto::_child_c<0>, _context)
, detail::switch_case_is_nullary(proto::_child_c<1>, _context)
>
{};
struct switch_eval
{
typedef void result_type;
template <typename Context>
result_type
operator()(Context const &) const
{
}
template <typename Cond, typename Cases, typename Context>
result_type
operator()(Cond const & cond, Cases const & cases, Context const & ctx) const
{
this->evaluate(
ctx
, cond
, cases
, typename detail::switch_size::impl<Cases, int, proto::empty_env>::result_type()
, typename detail::switch_grammar::impl<Cases, int, proto::empty_env>::result_type()
);
}
private:
template <typename Context, typename Cond, typename Cases>
result_type
evaluate(
Context const & ctx
, Cond const & cond
, Cases const & cases
, mpl::int_<1>
, mpl::false_
) const
{
typedef
typename proto::result_of::value<
typename proto::result_of::child_c<
Cases
, 0
>::type
>::type
case_label;
switch(boost::phoenix::eval(cond, ctx))
{
case case_label::value:
boost::phoenix::eval(proto::child_c<1>(cases), ctx);
}
}
template <typename Context, typename Cond, typename Cases>
result_type
evaluate(
Context const & ctx
, Cond const & cond
, Cases const & cases
, mpl::int_<1>
, mpl::true_
) const
{
switch(boost::phoenix::eval(cond, ctx))
{
default:
boost::phoenix::eval(proto::child_c<0>(cases), ctx);
}
}
// Bring in the evaluation functions
#include <boost/phoenix/statement/detail/switch.hpp>
};
template <typename Dummy>
struct default_actions::when<rule::switch_, Dummy>
: call<switch_eval>
{};
template <int N, typename A>
inline
typename proto::result_of::make_expr<
tag::switch_case
, proto::basic_default_domain
, mpl::int_<N>
, A
>::type const
case_(A const & a)
{
return
proto::make_expr<
tag::switch_case
, proto::basic_default_domain
>(
mpl::int_<N>()
, a
);
}
template <typename A>
inline
typename proto::result_of::make_expr<
tag::switch_default_case
, proto::basic_default_domain
, A
>::type const
default_(A const& a)
{
return
proto::make_expr<
tag::switch_default_case
, proto::basic_default_domain
>(a);
}
template <typename Cond>
struct switch_gen
{
switch_gen(Cond const& cond) : cond(cond) {}
template <typename Cases>
typename expression::switch_<
Cond
, Cases
>::type
operator[](Cases const& cases) const
{
return
this->generate(
cases
, proto::matches<Cases, detail::switch_grammar>()
);
}
private:
Cond const& cond;
template <typename Cases>
typename expression::switch_<
Cond
, Cases
>::type
generate(Cases const & cases, mpl::true_) const
{
return expression::switch_<Cond, Cases>::make(cond, cases);
}
template <typename Cases>
typename expression::switch_<
Cond
, Cases
>::type
generate(Cases const &, mpl::false_) const
{
BOOST_MPL_ASSERT_MSG(
false
, INVALID_SWITCH_CASE_STATEMENT
, (Cases)
);
}
};
template <typename Cond>
inline
switch_gen<Cond> const
switch_(Cond const& cond)
{
return switch_gen<Cond>(cond);
}
}}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif
|