/usr/include/boost/typeof/msvc/typeof_impl.hpp is in libboost1.55-dev 1.55.0+dfsg-3.
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 | // Copyright (C) 2005 Igor Chesnokov, mailto:ichesnokov@gmail.com (VC 6.5,VC 7.1 + counter code)
// Copyright (C) 2005-2007 Peder Holt (VC 7.0 + framework)
// Copyright (C) 2006 Steven Watanabe (VC 8.0)
// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_TYPEOF_MSVC_TYPEOF_IMPL_HPP_INCLUDED
# define BOOST_TYPEOF_MSVC_TYPEOF_IMPL_HPP_INCLUDED
# include <boost/config.hpp>
# include <boost/detail/workaround.hpp>
# include <boost/mpl/int.hpp>
# include <boost/type_traits/is_function.hpp>
# include <boost/utility/enable_if.hpp>
# if BOOST_WORKAROUND(BOOST_MSVC,>=1310)
# include <typeinfo>
# endif
namespace boost
{
namespace type_of
{
//Compile time constant code
# if BOOST_WORKAROUND(BOOST_MSVC,>=1300) && defined(_MSC_EXTENSIONS)
template<int N> struct the_counter;
template<typename T,int N = 5/*for similarity*/>
struct encode_counter
{
__if_exists(the_counter<N + 256>)
{
BOOST_STATIC_CONSTANT(unsigned,count=(encode_counter<T,N + 257>::count));
}
__if_not_exists(the_counter<N + 256>)
{
__if_exists(the_counter<N + 64>)
{
BOOST_STATIC_CONSTANT(unsigned,count=(encode_counter<T,N + 65>::count));
}
__if_not_exists(the_counter<N + 64>)
{
__if_exists(the_counter<N + 16>)
{
BOOST_STATIC_CONSTANT(unsigned,count=(encode_counter<T,N + 17>::count));
}
__if_not_exists(the_counter<N + 16>)
{
__if_exists(the_counter<N + 4>)
{
BOOST_STATIC_CONSTANT(unsigned,count=(encode_counter<T,N + 5>::count));
}
__if_not_exists(the_counter<N + 4>)
{
__if_exists(the_counter<N>)
{
BOOST_STATIC_CONSTANT(unsigned,count=(encode_counter<T,N + 1>::count));
}
__if_not_exists(the_counter<N>)
{
BOOST_STATIC_CONSTANT(unsigned,count=N);
typedef the_counter<N> type;
}
}
}
}
}
};
# define BOOST_TYPEOF_INDEX(T) (encode_counter<T>::count)
# define BOOST_TYPEOF_NEXT_INDEX(next)
# else
template<int N> struct encode_counter : encode_counter<N - 1> {};
template<> struct encode_counter<0> {};
//Need to default to a larger value than 4, as due to MSVC's ETI errors. (sizeof(int)==4)
char (*encode_index(...))[5];
# define BOOST_TYPEOF_INDEX(T) (sizeof(*boost::type_of::encode_index((boost::type_of::encode_counter<1005>*)0)))
# define BOOST_TYPEOF_NEXT_INDEX(next) friend char (*encode_index(encode_counter<next>*))[next];
# endif
//Typeof code
# if BOOST_WORKAROUND(BOOST_MSVC,==1300)
template<typename ID>
struct msvc_extract_type
{
template<bool>
struct id2type_impl;
typedef id2type_impl<true> id2type;
};
template<typename T, typename ID>
struct msvc_register_type : msvc_extract_type<ID>
{
template<>
struct id2type_impl<true> //VC7.0 specific bugfeature
{
typedef T type;
};
};
#elif BOOST_WORKAROUND(BOOST_MSVC,>=1400)
struct msvc_extract_type_default_param {};
template<typename ID, typename T = msvc_extract_type_default_param>
struct msvc_extract_type;
template<typename ID>
struct msvc_extract_type<ID, msvc_extract_type_default_param> {
template<bool>
struct id2type_impl;
typedef id2type_impl<true> id2type;
};
template<typename ID, typename T>
struct msvc_extract_type : msvc_extract_type<ID,msvc_extract_type_default_param>
{
template<>
struct id2type_impl<true> //VC8.0 specific bugfeature
{
typedef T type;
};
template<bool>
struct id2type_impl;
typedef id2type_impl<true> id2type;
};
template<typename T, typename ID>
struct msvc_register_type : msvc_extract_type<ID, T>
{
};
# else
template<typename ID>
struct msvc_extract_type
{
struct id2type;
};
template<typename T, typename ID>
struct msvc_register_type : msvc_extract_type<ID>
{
typedef msvc_extract_type<ID> base_type;
struct base_type::id2type // This uses nice VC6.5 and VC7.1 bugfeature
{
typedef T type;
};
};
# endif
// EAN: preprocess this block out on advice of Peder Holt
// to eliminate errors in type_traits/common_type.hpp
# if 0 //BOOST_WORKAROUND(BOOST_MSVC,==1310)
template<const std::type_info& ref_type_info>
struct msvc_typeid_wrapper {
typedef typename msvc_extract_type<msvc_typeid_wrapper>::id2type id2type;
typedef typename id2type::type wrapped_type;
typedef typename wrapped_type::type type;
};
//This class is used for registering the type T. encode_type<T> is mapped against typeid(encode_type<T>).
//msvc_typeid_wrapper<typeid(encode_type<T>)> will now have a type typedef that equals encode_type<T>.
template<typename T>
struct encode_type
{
typedef encode_type<T> input_type;
//Invoke registration of encode_type<T>. typeid(encode_type<T>) is now mapped to encode_type<T>. Do not use registered_type for anything.
//The reason for registering encode_type<T> rather than T, is that VC handles typeid(function reference) poorly. By adding another
//level of indirection, we solve this problem.
typedef typename msvc_register_type<input_type,msvc_typeid_wrapper<typeid(input_type)> >::id2type registered_type;
typedef T type;
};
template<typename T> typename disable_if<
typename is_function<T>::type,
typename encode_type<T>::input_type>::type encode_start(T const&);
template<typename T> typename enable_if<
typename is_function<T>::type,
typename encode_type<T>::input_type>::type encode_start(T&);
template<typename Organizer, typename T>
msvc_register_type<T,Organizer> typeof_register_type(const T&);
# define BOOST_TYPEOF(expr) \
boost::type_of::msvc_typeid_wrapper<typeid(boost::type_of::encode_start(expr))>::type
# define BOOST_TYPEOF_TPL(expr) typename BOOST_TYPEOF(expr)
# define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \
struct name {\
enum {_typeof_register_value=sizeof(typeid(boost::type_of::typeof_register_type<name>(expr)))};\
typedef typename boost::type_of::msvc_extract_type<name>::id2type id2type;\
typedef typename id2type::type type;\
};
# define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \
struct name {\
enum {_typeof_register_value=sizeof(typeid(boost::type_of::typeof_register_type<name>(expr)))};\
typedef boost::type_of::msvc_extract_type<name>::id2type id2type;\
typedef id2type::type type;\
};
# else
template<int ID>
struct msvc_typeid_wrapper {
typedef typename msvc_extract_type<mpl::int_<ID> >::id2type id2type;
typedef typename id2type::type type;
};
//Workaround for ETI-bug for VC6 and VC7
template<>
struct msvc_typeid_wrapper<1> {
typedef msvc_typeid_wrapper<1> type;
};
//Workaround for ETI-bug for VC7.1
template<>
struct msvc_typeid_wrapper<4> {
typedef msvc_typeid_wrapper<4> type;
};
//Tie it all together
template<typename T>
struct encode_type
{
//Get the next available compile time constants index
BOOST_STATIC_CONSTANT(unsigned,value=BOOST_TYPEOF_INDEX(T));
//Instantiate the template
typedef typename msvc_register_type<T,mpl::int_<value> >::id2type type;
//Set the next compile time constants index
BOOST_STATIC_CONSTANT(unsigned,next=value+1);
//Increment the compile time constant (only needed when extensions are not active
BOOST_TYPEOF_NEXT_INDEX(next);
};
template<class T>
struct sizer
{
typedef char(*type)[encode_type<T>::value];
};
# if BOOST_WORKAROUND(BOOST_MSVC,>=1310)
template<typename T> typename disable_if<
typename is_function<T>::type,
typename sizer<T>::type>::type encode_start(T const&);
template<typename T> typename enable_if<
typename is_function<T>::type,
typename sizer<T>::type>::type encode_start(T&);
# else
template<typename T>
typename sizer<T>::type encode_start(T const&);
# endif
template<typename Organizer, typename T>
msvc_register_type<T,Organizer> typeof_register_type(const T&,Organizer* =0);
# define BOOST_TYPEOF(expr) \
boost::type_of::msvc_typeid_wrapper<sizeof(*boost::type_of::encode_start(expr))>::type
# define BOOST_TYPEOF_TPL(expr) typename BOOST_TYPEOF(expr)
# define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \
struct name {\
BOOST_STATIC_CONSTANT(int,_typeof_register_value=sizeof(boost::type_of::typeof_register_type<name>(expr)));\
typedef typename boost::type_of::msvc_extract_type<name>::id2type id2type;\
typedef typename id2type::type type;\
};
# define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \
struct name {\
BOOST_STATIC_CONSTANT(int,_typeof_register_value=sizeof(boost::type_of::typeof_register_type<name>(expr)));\
typedef boost::type_of::msvc_extract_type<name>::id2type id2type;\
typedef id2type::type type;\
};
#endif
}
}
#endif//BOOST_TYPEOF_MSVC_TYPEOF_IMPL_HPP_INCLUDED
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