1 // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000. 2 // Use, modification and distribution are subject to the Boost Software License, 3 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 4 // http://www.boost.org/LICENSE_1_0.txt). 5 // 6 // See http://www.boost.org/libs/type_traits for most recent version including documentation. 7 8 #ifndef BOOST_TT_INTRINSICS_HPP_INCLUDED 9 #define BOOST_TT_INTRINSICS_HPP_INCLUDED 10 11 #ifndef BOOST_TT_CONFIG_HPP_INCLUDED 12 #include <boost/type_traits/config.hpp> 13 #endif 14 15 // 16 // Helper macros for builtin compiler support. 17 // If your compiler has builtin support for any of the following 18 // traits concepts, then redefine the appropriate macros to pick 19 // up on the compiler support: 20 // 21 // (these should largely ignore cv-qualifiers) 22 // BOOST_IS_UNION(T) should evaluate to true if T is a union type 23 // BOOST_IS_POD(T) should evaluate to true if T is a POD type 24 // BOOST_IS_EMPTY(T) should evaluate to true if T is an empty class type (and not a union) 25 // BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) should evaluate to true if "T x;" has no effect 26 // BOOST_HAS_TRIVIAL_COPY(T) should evaluate to true if T(t) <==> memcpy 27 // BOOST_HAS_TRIVIAL_ASSIGN(T) should evaluate to true if t = u <==> memcpy 28 // BOOST_HAS_TRIVIAL_DESTRUCTOR(T) should evaluate to true if ~T() has no effect 29 // BOOST_HAS_NOTHROW_CONSTRUCTOR(T) should evaluate to true if "T x;" can not throw 30 // BOOST_HAS_NOTHROW_COPY(T) should evaluate to true if T(t) can not throw 31 // BOOST_HAS_NOTHROW_ASSIGN(T) should evaluate to true if t = u can not throw 32 // BOOST_HAS_VIRTUAL_DESTRUCTOR(T) should evaluate to true T has a virtual destructor 33 // 34 // The following can also be defined: when detected our implementation is greatly simplified. 35 // 36 // BOOST_IS_ABSTRACT(T) true if T is an abstract type 37 // BOOST_IS_BASE_OF(T,U) true if T is a base class of U 38 // BOOST_IS_CLASS(T) true if T is a class type (and not a union) 39 // BOOST_IS_CONVERTIBLE(T,U) true if T is convertible to U 40 // BOOST_IS_ENUM(T) true is T is an enum 41 // BOOST_IS_POLYMORPHIC(T) true if T is a polymorphic type 42 // BOOST_ALIGNMENT_OF(T) should evaluate to the alignment requirements of type T. 43 44 #ifdef BOOST_HAS_SGI_TYPE_TRAITS 45 // Hook into SGI's __type_traits class, this will pick up user supplied 46 // specializations as well as SGI - compiler supplied specializations. 47 # include <boost/type_traits/is_same.hpp> 48 # ifdef __NetBSD__ 49 // There are two different versions of type_traits.h on NetBSD on Spark 50 // use an implicit include via algorithm instead, to make sure we get 51 // the same version as the std lib: 52 # include <algorithm> 53 # else 54 # include <type_traits.h> 55 # endif 56 # define BOOST_IS_POD(T) ::boost::is_same< typename ::__type_traits<T>::is_POD_type, ::__true_type>::value 57 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_default_constructor, ::__true_type>::value 58 # define BOOST_HAS_TRIVIAL_COPY(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_copy_constructor, ::__true_type>::value 59 # define BOOST_HAS_TRIVIAL_ASSIGN(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_assignment_operator, ::__true_type>::value 60 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) ::boost::is_same< typename ::__type_traits<T>::has_trivial_destructor, ::__true_type>::value 61 62 # ifdef __sgi 63 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 64 # endif 65 #endif 66 67 #if defined(__MSL_CPP__) && (__MSL_CPP__ >= 0x8000) 68 // Metrowerks compiler is acquiring intrinsic type traits support 69 // post version 8. We hook into the published interface to pick up 70 // user defined specializations as well as compiler intrinsics as 71 // and when they become available: 72 # include <msl_utility> 73 # define BOOST_IS_UNION(T) BOOST_STD_EXTENSION_NAMESPACE::is_union<T>::value 74 # define BOOST_IS_POD(T) BOOST_STD_EXTENSION_NAMESPACE::is_POD<T>::value 75 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_default_ctor<T>::value 76 # define BOOST_HAS_TRIVIAL_COPY(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_copy_ctor<T>::value 77 # define BOOST_HAS_TRIVIAL_ASSIGN(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_assignment<T>::value 78 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) BOOST_STD_EXTENSION_NAMESPACE::has_trivial_dtor<T>::value 79 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 80 #endif 81 82 #if defined(BOOST_MSVC) && defined(BOOST_MSVC_FULL_VER) && (BOOST_MSVC_FULL_VER >=140050215) 83 # include <boost/type_traits/is_same.hpp> 84 85 # define BOOST_IS_UNION(T) __is_union(T) 86 # define BOOST_IS_POD(T) (__is_pod(T) && __has_trivial_constructor(T)) 87 # define BOOST_IS_EMPTY(T) __is_empty(T) 88 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) __has_trivial_constructor(T) 89 # define BOOST_HAS_TRIVIAL_COPY(T) (__has_trivial_copy(T)|| ( ::boost::is_pod<T>::value && !::boost::is_volatile<T>::value)) 90 # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__has_trivial_assign(T) || ( ::boost::is_pod<T>::value && ! ::boost::is_const<T>::value && !::boost::is_volatile<T>::value)) 91 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) (__has_trivial_destructor(T) || ::boost::is_pod<T>::value) 92 # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) (__has_nothrow_constructor(T) || ::boost::has_trivial_constructor<T>::value) 93 # define BOOST_HAS_NOTHROW_COPY(T) (__has_nothrow_copy(T) || ::boost::has_trivial_copy<T>::value) 94 # define BOOST_HAS_NOTHROW_ASSIGN(T) (__has_nothrow_assign(T) || ::boost::has_trivial_assign<T>::value) 95 # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) 96 97 # define BOOST_IS_ABSTRACT(T) __is_abstract(T) 98 # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_same<T,U>::value) 99 # define BOOST_IS_CLASS(T) __is_class(T) 100 # define BOOST_IS_CONVERTIBLE(T,U) ((__is_convertible_to(T,U) || is_same<T,U>::value) && !__is_abstract(U)) 101 # define BOOST_IS_ENUM(T) __is_enum(T) 102 // This one doesn't quite always do the right thing: 103 // # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) 104 // This one fails if the default alignment has been changed with /Zp: 105 // # define BOOST_ALIGNMENT_OF(T) __alignof(T) 106 107 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 108 #endif 109 110 #if defined(__DMC__) && (__DMC__ >= 0x848) 111 // For Digital Mars C++, www.digitalmars.com 112 # define BOOST_IS_UNION(T) (__typeinfo(T) & 0x400) 113 # define BOOST_IS_POD(T) (__typeinfo(T) & 0x800) 114 # define BOOST_IS_EMPTY(T) (__typeinfo(T) & 0x1000) 115 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) (__typeinfo(T) & 0x10) 116 # define BOOST_HAS_TRIVIAL_COPY(T) (__typeinfo(T) & 0x20) 117 # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__typeinfo(T) & 0x40) 118 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) (__typeinfo(T) & 0x8) 119 # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) (__typeinfo(T) & 0x80) 120 # define BOOST_HAS_NOTHROW_COPY(T) (__typeinfo(T) & 0x100) 121 # define BOOST_HAS_NOTHROW_ASSIGN(T) (__typeinfo(T) & 0x200) 122 # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) (__typeinfo(T) & 0x4) 123 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 124 #endif 125 126 #if defined(BOOST_CLANG) && defined(__has_feature) 127 # include <cstddef> 128 # include <boost/type_traits/is_same.hpp> 129 # include <boost/type_traits/is_reference.hpp> 130 # include <boost/type_traits/is_volatile.hpp> 131 132 # if __has_feature(is_union) 133 # define BOOST_IS_UNION(T) __is_union(T) 134 # endif 135 # if (!defined(__GLIBCXX__) || (__GLIBCXX__ >= 20080306 && __GLIBCXX__ != 20080519)) && __has_feature(is_pod) 136 # define BOOST_IS_POD(T) __is_pod(T) 137 # endif 138 # if (!defined(__GLIBCXX__) || (__GLIBCXX__ >= 20080306 && __GLIBCXX__ != 20080519)) && __has_feature(is_empty) 139 # define BOOST_IS_EMPTY(T) __is_empty(T) 140 # endif 141 # if __has_feature(has_trivial_constructor) 142 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) __has_trivial_constructor(T) 143 # endif 144 # if __has_feature(has_trivial_copy) 145 # define BOOST_HAS_TRIVIAL_COPY(T) (__has_trivial_copy(T) && !is_reference<T>::value && !is_volatile<T>::value) 146 # endif 147 # if __has_feature(has_trivial_assign) 148 # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__has_trivial_assign(T) && !is_volatile<T>::value) 149 # endif 150 # if __has_feature(has_trivial_destructor) 151 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) 152 # endif 153 # if __has_feature(has_nothrow_constructor) 154 # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) __has_nothrow_constructor(T) 155 # endif 156 # if __has_feature(has_nothrow_copy) 157 # define BOOST_HAS_NOTHROW_COPY(T) (__has_nothrow_copy(T) && !is_volatile<T>::value && !is_reference<T>::value) 158 # endif 159 # if __has_feature(has_nothrow_assign) 160 # define BOOST_HAS_NOTHROW_ASSIGN(T) (__has_nothrow_assign(T) && !is_volatile<T>::value) 161 # endif 162 # if __has_feature(has_virtual_destructor) 163 # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) 164 # endif 165 # if __has_feature(is_abstract) 166 # define BOOST_IS_ABSTRACT(T) __is_abstract(T) 167 # endif 168 # if __has_feature(is_base_of) 169 # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_same<T,U>::value) 170 # endif 171 # if __has_feature(is_class) 172 # define BOOST_IS_CLASS(T) __is_class(T) 173 # endif 174 # if __has_feature(is_convertible_to) 175 # include <boost/type_traits/is_abstract.hpp> 176 # define BOOST_IS_CONVERTIBLE(T,U) (__is_convertible_to(T,U) && !::boost::is_abstract<U>::value) 177 # endif 178 # if __has_feature(is_enum) 179 # define BOOST_IS_ENUM(T) __is_enum(T) 180 # endif 181 # if __has_feature(is_polymorphic) 182 # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) 183 # endif 184 # define BOOST_ALIGNMENT_OF(T) __alignof(T) 185 186 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 187 #endif 188 189 #if defined(__GNUC__) && ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3) && !defined(__GCCXML__))) && !defined(BOOST_CLANG) 190 # include <boost/type_traits/is_same.hpp> 191 # include <boost/type_traits/is_reference.hpp> 192 # include <boost/type_traits/is_volatile.hpp> 193 194 #ifdef BOOST_INTEL 195 # define BOOST_INTEL_TT_OPTS || is_pod<T>::value 196 #else 197 # define BOOST_INTEL_TT_OPTS 198 #endif 199 200 # define BOOST_IS_UNION(T) __is_union(T) 201 # define BOOST_IS_POD(T) __is_pod(T) 202 # define BOOST_IS_EMPTY(T) __is_empty(T) 203 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) ((__has_trivial_constructor(T) BOOST_INTEL_TT_OPTS) && ! ::boost::is_volatile<T>::value) 204 # define BOOST_HAS_TRIVIAL_COPY(T) ((__has_trivial_copy(T) BOOST_INTEL_TT_OPTS) && !is_reference<T>::value && ! ::boost::is_volatile<T>::value) 205 # define BOOST_HAS_TRIVIAL_ASSIGN(T) ((__has_trivial_assign(T) BOOST_INTEL_TT_OPTS) && ! ::boost::is_volatile<T>::value && ! ::boost::is_const<T>::value) 206 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) (__has_trivial_destructor(T) BOOST_INTEL_TT_OPTS) 207 # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) (__has_nothrow_constructor(T) BOOST_INTEL_TT_OPTS) 208 # define BOOST_HAS_NOTHROW_COPY(T) ((__has_nothrow_copy(T) BOOST_INTEL_TT_OPTS) && !is_volatile<T>::value && !is_reference<T>::value) 209 # define BOOST_HAS_NOTHROW_ASSIGN(T) ((__has_nothrow_assign(T) BOOST_INTEL_TT_OPTS) && !is_volatile<T>::value && !is_const<T>::value) 210 # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) 211 212 # define BOOST_IS_ABSTRACT(T) __is_abstract(T) 213 # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_same<T,U>::value) 214 # define BOOST_IS_CLASS(T) __is_class(T) 215 # define BOOST_IS_ENUM(T) __is_enum(T) 216 # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) 217 # if (!defined(unix) && !defined(__unix__)) || defined(__LP64__) 218 // GCC sometimes lies about alignment requirements 219 // of type double on 32-bit unix platforms, use the 220 // old implementation instead in that case: 221 # define BOOST_ALIGNMENT_OF(T) __alignof__(T) 222 # endif 223 224 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 225 #endif 226 227 #if defined(__ghs__) && (__GHS_VERSION_NUMBER >= 600) 228 # include <boost/type_traits/is_same.hpp> 229 # include <boost/type_traits/is_reference.hpp> 230 # include <boost/type_traits/is_volatile.hpp> 231 232 # define BOOST_IS_UNION(T) __is_union(T) 233 # define BOOST_IS_POD(T) __is_pod(T) 234 # define BOOST_IS_EMPTY(T) __is_empty(T) 235 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) __has_trivial_constructor(T) 236 # define BOOST_HAS_TRIVIAL_COPY(T) (__has_trivial_copy(T) && !is_reference<T>::value && !is_volatile<T>::value) 237 # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__has_trivial_assign(T) && !is_volatile<T>::value) 238 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) __has_trivial_destructor(T) 239 # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) __has_nothrow_constructor(T) 240 # define BOOST_HAS_NOTHROW_COPY(T) (__has_nothrow_copy(T) && !is_volatile<T>::value && !is_reference<T>::value) 241 # define BOOST_HAS_NOTHROW_ASSIGN(T) (__has_nothrow_assign(T) && !is_volatile<T>::value) 242 # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) 243 244 # define BOOST_IS_ABSTRACT(T) __is_abstract(T) 245 # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_same<T,U>::value) 246 # define BOOST_IS_CLASS(T) __is_class(T) 247 # define BOOST_IS_ENUM(T) __is_enum(T) 248 # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) 249 # define BOOST_ALIGNMENT_OF(T) __alignof__(T) 250 251 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 252 #endif 253 254 # if defined(__CODEGEARC__) 255 # include <boost/type_traits/is_same.hpp> 256 # include <boost/type_traits/is_reference.hpp> 257 # include <boost/type_traits/is_volatile.hpp> 258 # include <boost/type_traits/is_void.hpp> 259 260 # define BOOST_IS_UNION(T) __is_union(T) 261 # define BOOST_IS_POD(T) __is_pod(T) 262 # define BOOST_IS_EMPTY(T) __is_empty(T) 263 # define BOOST_HAS_TRIVIAL_CONSTRUCTOR(T) (__has_trivial_default_constructor(T)) 264 # define BOOST_HAS_TRIVIAL_COPY(T) (__has_trivial_copy_constructor(T) && !is_volatile<T>::value && !is_reference<T>::value) 265 # define BOOST_HAS_TRIVIAL_ASSIGN(T) (__has_trivial_assign(T) && !is_volatile<T>::value) 266 # define BOOST_HAS_TRIVIAL_DESTRUCTOR(T) (__has_trivial_destructor(T)) 267 # define BOOST_HAS_NOTHROW_CONSTRUCTOR(T) (__has_nothrow_default_constructor(T)) 268 # define BOOST_HAS_NOTHROW_COPY(T) (__has_nothrow_copy_constructor(T) && !is_volatile<T>::value && !is_reference<T>::value) 269 # define BOOST_HAS_NOTHROW_ASSIGN(T) (__has_nothrow_assign(T) && !is_volatile<T>::value) 270 # define BOOST_HAS_VIRTUAL_DESTRUCTOR(T) __has_virtual_destructor(T) 271 272 # define BOOST_IS_ABSTRACT(T) __is_abstract(T) 273 # define BOOST_IS_BASE_OF(T,U) (__is_base_of(T,U) && !is_void<T>::value && !is_void<U>::value) 274 # define BOOST_IS_CLASS(T) __is_class(T) 275 # define BOOST_IS_CONVERTIBLE(T,U) (__is_convertible(T,U) || is_void<U>::value) 276 # define BOOST_IS_ENUM(T) __is_enum(T) 277 # define BOOST_IS_POLYMORPHIC(T) __is_polymorphic(T) 278 # define BOOST_ALIGNMENT_OF(T) alignof(T) 279 280 # define BOOST_HAS_TYPE_TRAITS_INTRINSICS 281 #endif 282 283 #endif // BOOST_TT_INTRINSICS_HPP_INCLUDED 284 285 286 287 288 289 290
