Colin Cross | 8ae0677 | 2022-03-02 14:39:53 -0800 | [diff] [blame] | 1 | // -*- C++ -*- |
| 2 | //===------------------------ type_traits ---------------------------------===// |
| 3 | // |
| 4 | // The LLVM Compiler Infrastructure |
| 5 | // |
| 6 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 7 | // Source Licenses. See LICENSE.TXT for details. |
| 8 | // |
| 9 | //===----------------------------------------------------------------------===// |
| 10 | |
| 11 | #ifndef _LIBCPP_TYPE_TRAITS |
| 12 | #define _LIBCPP_TYPE_TRAITS |
| 13 | |
| 14 | /* |
| 15 | type_traits synopsis |
| 16 | |
| 17 | namespace std |
| 18 | { |
| 19 | |
| 20 | // helper class: |
| 21 | template <class T, T v> struct integral_constant; |
| 22 | typedef integral_constant<bool, true> true_type; // C++11 |
| 23 | typedef integral_constant<bool, false> false_type; // C++11 |
| 24 | |
| 25 | template <bool B> // C++14 |
| 26 | using bool_constant = integral_constant<bool, B>; // C++14 |
| 27 | typedef bool_constant<true> true_type; // C++14 |
| 28 | typedef bool_constant<false> false_type; // C++14 |
| 29 | |
| 30 | // helper traits |
| 31 | template <bool, class T = void> struct enable_if; |
| 32 | template <bool, class T, class F> struct conditional; |
| 33 | |
| 34 | // Primary classification traits: |
| 35 | template <class T> struct is_void; |
| 36 | template <class T> struct is_null_pointer; // C++14 |
| 37 | template <class T> struct is_integral; |
| 38 | template <class T> struct is_floating_point; |
| 39 | template <class T> struct is_array; |
| 40 | template <class T> struct is_pointer; |
| 41 | template <class T> struct is_lvalue_reference; |
| 42 | template <class T> struct is_rvalue_reference; |
| 43 | template <class T> struct is_member_object_pointer; |
| 44 | template <class T> struct is_member_function_pointer; |
| 45 | template <class T> struct is_enum; |
| 46 | template <class T> struct is_union; |
| 47 | template <class T> struct is_class; |
| 48 | template <class T> struct is_function; |
| 49 | |
| 50 | // Secondary classification traits: |
| 51 | template <class T> struct is_reference; |
| 52 | template <class T> struct is_arithmetic; |
| 53 | template <class T> struct is_fundamental; |
| 54 | template <class T> struct is_member_pointer; |
| 55 | template <class T> struct is_scalar; |
| 56 | template <class T> struct is_object; |
| 57 | template <class T> struct is_compound; |
| 58 | |
| 59 | // Const-volatile properties and transformations: |
| 60 | template <class T> struct is_const; |
| 61 | template <class T> struct is_volatile; |
| 62 | template <class T> struct remove_const; |
| 63 | template <class T> struct remove_volatile; |
| 64 | template <class T> struct remove_cv; |
| 65 | template <class T> struct add_const; |
| 66 | template <class T> struct add_volatile; |
| 67 | template <class T> struct add_cv; |
| 68 | |
| 69 | // Reference transformations: |
| 70 | template <class T> struct remove_reference; |
| 71 | template <class T> struct add_lvalue_reference; |
| 72 | template <class T> struct add_rvalue_reference; |
| 73 | |
| 74 | // Pointer transformations: |
| 75 | template <class T> struct remove_pointer; |
| 76 | template <class T> struct add_pointer; |
| 77 | |
| 78 | template<class T> struct type_identity; // C++20 |
| 79 | template<class T> |
| 80 | using type_identity_t = typename type_identity<T>::type; // C++20 |
| 81 | |
| 82 | // Integral properties: |
| 83 | template <class T> struct is_signed; |
| 84 | template <class T> struct is_unsigned; |
| 85 | template <class T> struct make_signed; |
| 86 | template <class T> struct make_unsigned; |
| 87 | |
| 88 | // Array properties and transformations: |
| 89 | template <class T> struct rank; |
| 90 | template <class T, unsigned I = 0> struct extent; |
| 91 | template <class T> struct remove_extent; |
| 92 | template <class T> struct remove_all_extents; |
| 93 | |
| 94 | // Member introspection: |
| 95 | template <class T> struct is_pod; |
| 96 | template <class T> struct is_trivial; |
| 97 | template <class T> struct is_trivially_copyable; |
| 98 | template <class T> struct is_standard_layout; |
| 99 | template <class T> struct is_literal_type; |
| 100 | template <class T> struct is_empty; |
| 101 | template <class T> struct is_polymorphic; |
| 102 | template <class T> struct is_abstract; |
| 103 | template <class T> struct is_final; // C++14 |
| 104 | template <class T> struct is_aggregate; // C++17 |
| 105 | |
| 106 | template <class T, class... Args> struct is_constructible; |
| 107 | template <class T> struct is_default_constructible; |
| 108 | template <class T> struct is_copy_constructible; |
| 109 | template <class T> struct is_move_constructible; |
| 110 | template <class T, class U> struct is_assignable; |
| 111 | template <class T> struct is_copy_assignable; |
| 112 | template <class T> struct is_move_assignable; |
| 113 | template <class T, class U> struct is_swappable_with; // C++17 |
| 114 | template <class T> struct is_swappable; // C++17 |
| 115 | template <class T> struct is_destructible; |
| 116 | |
| 117 | template <class T, class... Args> struct is_trivially_constructible; |
| 118 | template <class T> struct is_trivially_default_constructible; |
| 119 | template <class T> struct is_trivially_copy_constructible; |
| 120 | template <class T> struct is_trivially_move_constructible; |
| 121 | template <class T, class U> struct is_trivially_assignable; |
| 122 | template <class T> struct is_trivially_copy_assignable; |
| 123 | template <class T> struct is_trivially_move_assignable; |
| 124 | template <class T> struct is_trivially_destructible; |
| 125 | |
| 126 | template <class T, class... Args> struct is_nothrow_constructible; |
| 127 | template <class T> struct is_nothrow_default_constructible; |
| 128 | template <class T> struct is_nothrow_copy_constructible; |
| 129 | template <class T> struct is_nothrow_move_constructible; |
| 130 | template <class T, class U> struct is_nothrow_assignable; |
| 131 | template <class T> struct is_nothrow_copy_assignable; |
| 132 | template <class T> struct is_nothrow_move_assignable; |
| 133 | template <class T, class U> struct is_nothrow_swappable_with; // C++17 |
| 134 | template <class T> struct is_nothrow_swappable; // C++17 |
| 135 | template <class T> struct is_nothrow_destructible; |
| 136 | |
| 137 | template <class T> struct has_virtual_destructor; |
| 138 | |
| 139 | template<class T> struct has_unique_object_representations; // C++17 |
| 140 | |
| 141 | // Relationships between types: |
| 142 | template <class T, class U> struct is_same; |
| 143 | template <class Base, class Derived> struct is_base_of; |
| 144 | template <class From, class To> struct is_convertible; |
| 145 | |
| 146 | template <class Fn, class... ArgTypes> struct is_invocable; |
| 147 | template <class R, class Fn, class... ArgTypes> struct is_invocable_r; |
| 148 | |
| 149 | template <class Fn, class... ArgTypes> struct is_nothrow_invocable; |
| 150 | template <class R, class Fn, class... ArgTypes> struct is_nothrow_invocable_r; |
| 151 | |
| 152 | // Alignment properties and transformations: |
| 153 | template <class T> struct alignment_of; |
| 154 | template <size_t Len, size_t Align = most_stringent_alignment_requirement> |
| 155 | struct aligned_storage; |
| 156 | template <size_t Len, class... Types> struct aligned_union; |
| 157 | template <class T> struct remove_cvref; // C++20 |
| 158 | |
| 159 | template <class T> struct decay; |
| 160 | template <class... T> struct common_type; |
| 161 | template <class T> struct underlying_type; |
| 162 | template <class> class result_of; // undefined |
| 163 | template <class Fn, class... ArgTypes> class result_of<Fn(ArgTypes...)>; |
| 164 | template <class Fn, class... ArgTypes> struct invoke_result; // C++17 |
| 165 | |
| 166 | // const-volatile modifications: |
| 167 | template <class T> |
| 168 | using remove_const_t = typename remove_const<T>::type; // C++14 |
| 169 | template <class T> |
| 170 | using remove_volatile_t = typename remove_volatile<T>::type; // C++14 |
| 171 | template <class T> |
| 172 | using remove_cv_t = typename remove_cv<T>::type; // C++14 |
| 173 | template <class T> |
| 174 | using add_const_t = typename add_const<T>::type; // C++14 |
| 175 | template <class T> |
| 176 | using add_volatile_t = typename add_volatile<T>::type; // C++14 |
| 177 | template <class T> |
| 178 | using add_cv_t = typename add_cv<T>::type; // C++14 |
| 179 | |
| 180 | // reference modifications: |
| 181 | template <class T> |
| 182 | using remove_reference_t = typename remove_reference<T>::type; // C++14 |
| 183 | template <class T> |
| 184 | using add_lvalue_reference_t = typename add_lvalue_reference<T>::type; // C++14 |
| 185 | template <class T> |
| 186 | using add_rvalue_reference_t = typename add_rvalue_reference<T>::type; // C++14 |
| 187 | |
| 188 | // sign modifications: |
| 189 | template <class T> |
| 190 | using make_signed_t = typename make_signed<T>::type; // C++14 |
| 191 | template <class T> |
| 192 | using make_unsigned_t = typename make_unsigned<T>::type; // C++14 |
| 193 | |
| 194 | // array modifications: |
| 195 | template <class T> |
| 196 | using remove_extent_t = typename remove_extent<T>::type; // C++14 |
| 197 | template <class T> |
| 198 | using remove_all_extents_t = typename remove_all_extents<T>::type; // C++14 |
| 199 | |
| 200 | // pointer modifications: |
| 201 | template <class T> |
| 202 | using remove_pointer_t = typename remove_pointer<T>::type; // C++14 |
| 203 | template <class T> |
| 204 | using add_pointer_t = typename add_pointer<T>::type; // C++14 |
| 205 | |
| 206 | // other transformations: |
| 207 | template <size_t Len, std::size_t Align=default-alignment> |
| 208 | using aligned_storage_t = typename aligned_storage<Len,Align>::type; // C++14 |
| 209 | template <std::size_t Len, class... Types> |
| 210 | using aligned_union_t = typename aligned_union<Len,Types...>::type; // C++14 |
| 211 | template <class T> |
| 212 | using remove_cvref_t = typename remove_cvref<T>::type; // C++20 |
| 213 | template <class T> |
| 214 | using decay_t = typename decay<T>::type; // C++14 |
| 215 | template <bool b, class T=void> |
| 216 | using enable_if_t = typename enable_if<b,T>::type; // C++14 |
| 217 | template <bool b, class T, class F> |
| 218 | using conditional_t = typename conditional<b,T,F>::type; // C++14 |
| 219 | template <class... T> |
| 220 | using common_type_t = typename common_type<T...>::type; // C++14 |
| 221 | template <class T> |
| 222 | using underlying_type_t = typename underlying_type<T>::type; // C++14 |
| 223 | template <class T> |
| 224 | using result_of_t = typename result_of<T>::type; // C++14 |
| 225 | template <class Fn, class... ArgTypes> |
| 226 | using invoke_result_t = typename invoke_result<Fn, ArgTypes...>::type; // C++17 |
| 227 | |
| 228 | template <class...> |
| 229 | using void_t = void; // C++17 |
| 230 | |
| 231 | // See C++14 20.10.4.1, primary type categories |
| 232 | template <class T> inline constexpr bool is_void_v |
| 233 | = is_void<T>::value; // C++17 |
| 234 | template <class T> inline constexpr bool is_null_pointer_v |
| 235 | = is_null_pointer<T>::value; // C++17 |
| 236 | template <class T> inline constexpr bool is_integral_v |
| 237 | = is_integral<T>::value; // C++17 |
| 238 | template <class T> inline constexpr bool is_floating_point_v |
| 239 | = is_floating_point<T>::value; // C++17 |
| 240 | template <class T> inline constexpr bool is_array_v |
| 241 | = is_array<T>::value; // C++17 |
| 242 | template <class T> inline constexpr bool is_pointer_v |
| 243 | = is_pointer<T>::value; // C++17 |
| 244 | template <class T> inline constexpr bool is_lvalue_reference_v |
| 245 | = is_lvalue_reference<T>::value; // C++17 |
| 246 | template <class T> inline constexpr bool is_rvalue_reference_v |
| 247 | = is_rvalue_reference<T>::value; // C++17 |
| 248 | template <class T> inline constexpr bool is_member_object_pointer_v |
| 249 | = is_member_object_pointer<T>::value; // C++17 |
| 250 | template <class T> inline constexpr bool is_member_function_pointer_v |
| 251 | = is_member_function_pointer<T>::value; // C++17 |
| 252 | template <class T> inline constexpr bool is_enum_v |
| 253 | = is_enum<T>::value; // C++17 |
| 254 | template <class T> inline constexpr bool is_union_v |
| 255 | = is_union<T>::value; // C++17 |
| 256 | template <class T> inline constexpr bool is_class_v |
| 257 | = is_class<T>::value; // C++17 |
| 258 | template <class T> inline constexpr bool is_function_v |
| 259 | = is_function<T>::value; // C++17 |
| 260 | |
| 261 | // See C++14 20.10.4.2, composite type categories |
| 262 | template <class T> inline constexpr bool is_reference_v |
| 263 | = is_reference<T>::value; // C++17 |
| 264 | template <class T> inline constexpr bool is_arithmetic_v |
| 265 | = is_arithmetic<T>::value; // C++17 |
| 266 | template <class T> inline constexpr bool is_fundamental_v |
| 267 | = is_fundamental<T>::value; // C++17 |
| 268 | template <class T> inline constexpr bool is_object_v |
| 269 | = is_object<T>::value; // C++17 |
| 270 | template <class T> inline constexpr bool is_scalar_v |
| 271 | = is_scalar<T>::value; // C++17 |
| 272 | template <class T> inline constexpr bool is_compound_v |
| 273 | = is_compound<T>::value; // C++17 |
| 274 | template <class T> inline constexpr bool is_member_pointer_v |
| 275 | = is_member_pointer<T>::value; // C++17 |
| 276 | |
| 277 | // See C++14 20.10.4.3, type properties |
| 278 | template <class T> inline constexpr bool is_const_v |
| 279 | = is_const<T>::value; // C++17 |
| 280 | template <class T> inline constexpr bool is_volatile_v |
| 281 | = is_volatile<T>::value; // C++17 |
| 282 | template <class T> inline constexpr bool is_trivial_v |
| 283 | = is_trivial<T>::value; // C++17 |
| 284 | template <class T> inline constexpr bool is_trivially_copyable_v |
| 285 | = is_trivially_copyable<T>::value; // C++17 |
| 286 | template <class T> inline constexpr bool is_standard_layout_v |
| 287 | = is_standard_layout<T>::value; // C++17 |
| 288 | template <class T> inline constexpr bool is_pod_v |
| 289 | = is_pod<T>::value; // C++17 |
| 290 | template <class T> inline constexpr bool is_literal_type_v |
| 291 | = is_literal_type<T>::value; // C++17 |
| 292 | template <class T> inline constexpr bool is_empty_v |
| 293 | = is_empty<T>::value; // C++17 |
| 294 | template <class T> inline constexpr bool is_polymorphic_v |
| 295 | = is_polymorphic<T>::value; // C++17 |
| 296 | template <class T> inline constexpr bool is_abstract_v |
| 297 | = is_abstract<T>::value; // C++17 |
| 298 | template <class T> inline constexpr bool is_final_v |
| 299 | = is_final<T>::value; // C++17 |
| 300 | template <class T> inline constexpr bool is_aggregate_v |
| 301 | = is_aggregate<T>::value; // C++17 |
| 302 | template <class T> inline constexpr bool is_signed_v |
| 303 | = is_signed<T>::value; // C++17 |
| 304 | template <class T> inline constexpr bool is_unsigned_v |
| 305 | = is_unsigned<T>::value; // C++17 |
| 306 | template <class T, class... Args> inline constexpr bool is_constructible_v |
| 307 | = is_constructible<T, Args...>::value; // C++17 |
| 308 | template <class T> inline constexpr bool is_default_constructible_v |
| 309 | = is_default_constructible<T>::value; // C++17 |
| 310 | template <class T> inline constexpr bool is_copy_constructible_v |
| 311 | = is_copy_constructible<T>::value; // C++17 |
| 312 | template <class T> inline constexpr bool is_move_constructible_v |
| 313 | = is_move_constructible<T>::value; // C++17 |
| 314 | template <class T, class U> inline constexpr bool is_assignable_v |
| 315 | = is_assignable<T, U>::value; // C++17 |
| 316 | template <class T> inline constexpr bool is_copy_assignable_v |
| 317 | = is_copy_assignable<T>::value; // C++17 |
| 318 | template <class T> inline constexpr bool is_move_assignable_v |
| 319 | = is_move_assignable<T>::value; // C++17 |
| 320 | template <class T, class U> inline constexpr bool is_swappable_with_v |
| 321 | = is_swappable_with<T, U>::value; // C++17 |
| 322 | template <class T> inline constexpr bool is_swappable_v |
| 323 | = is_swappable<T>::value; // C++17 |
| 324 | template <class T> inline constexpr bool is_destructible_v |
| 325 | = is_destructible<T>::value; // C++17 |
| 326 | template <class T, class... Args> inline constexpr bool is_trivially_constructible_v |
| 327 | = is_trivially_constructible<T, Args...>::value; // C++17 |
| 328 | template <class T> inline constexpr bool is_trivially_default_constructible_v |
| 329 | = is_trivially_default_constructible<T>::value; // C++17 |
| 330 | template <class T> inline constexpr bool is_trivially_copy_constructible_v |
| 331 | = is_trivially_copy_constructible<T>::value; // C++17 |
| 332 | template <class T> inline constexpr bool is_trivially_move_constructible_v |
| 333 | = is_trivially_move_constructible<T>::value; // C++17 |
| 334 | template <class T, class U> inline constexpr bool is_trivially_assignable_v |
| 335 | = is_trivially_assignable<T, U>::value; // C++17 |
| 336 | template <class T> inline constexpr bool is_trivially_copy_assignable_v |
| 337 | = is_trivially_copy_assignable<T>::value; // C++17 |
| 338 | template <class T> inline constexpr bool is_trivially_move_assignable_v |
| 339 | = is_trivially_move_assignable<T>::value; // C++17 |
| 340 | template <class T> inline constexpr bool is_trivially_destructible_v |
| 341 | = is_trivially_destructible<T>::value; // C++17 |
| 342 | template <class T, class... Args> inline constexpr bool is_nothrow_constructible_v |
| 343 | = is_nothrow_constructible<T, Args...>::value; // C++17 |
| 344 | template <class T> inline constexpr bool is_nothrow_default_constructible_v |
| 345 | = is_nothrow_default_constructible<T>::value; // C++17 |
| 346 | template <class T> inline constexpr bool is_nothrow_copy_constructible_v |
| 347 | = is_nothrow_copy_constructible<T>::value; // C++17 |
| 348 | template <class T> inline constexpr bool is_nothrow_move_constructible_v |
| 349 | = is_nothrow_move_constructible<T>::value; // C++17 |
| 350 | template <class T, class U> inline constexpr bool is_nothrow_assignable_v |
| 351 | = is_nothrow_assignable<T, U>::value; // C++17 |
| 352 | template <class T> inline constexpr bool is_nothrow_copy_assignable_v |
| 353 | = is_nothrow_copy_assignable<T>::value; // C++17 |
| 354 | template <class T> inline constexpr bool is_nothrow_move_assignable_v |
| 355 | = is_nothrow_move_assignable<T>::value; // C++17 |
| 356 | template <class T, class U> inline constexpr bool is_nothrow_swappable_with_v |
| 357 | = is_nothrow_swappable_with<T, U>::value; // C++17 |
| 358 | template <class T> inline constexpr bool is_nothrow_swappable_v |
| 359 | = is_nothrow_swappable<T>::value; // C++17 |
| 360 | template <class T> inline constexpr bool is_nothrow_destructible_v |
| 361 | = is_nothrow_destructible<T>::value; // C++17 |
| 362 | template <class T> inline constexpr bool has_virtual_destructor_v |
| 363 | = has_virtual_destructor<T>::value; // C++17 |
| 364 | template<class T> inline constexpr bool has_unique_object_representations_v // C++17 |
| 365 | = has_unique_object_representations<T>::value; |
| 366 | |
| 367 | // See C++14 20.10.5, type property queries |
| 368 | template <class T> inline constexpr size_t alignment_of_v |
| 369 | = alignment_of<T>::value; // C++17 |
| 370 | template <class T> inline constexpr size_t rank_v |
| 371 | = rank<T>::value; // C++17 |
| 372 | template <class T, unsigned I = 0> inline constexpr size_t extent_v |
| 373 | = extent<T, I>::value; // C++17 |
| 374 | |
| 375 | // See C++14 20.10.6, type relations |
| 376 | template <class T, class U> inline constexpr bool is_same_v |
| 377 | = is_same<T, U>::value; // C++17 |
| 378 | template <class Base, class Derived> inline constexpr bool is_base_of_v |
| 379 | = is_base_of<Base, Derived>::value; // C++17 |
| 380 | template <class From, class To> inline constexpr bool is_convertible_v |
| 381 | = is_convertible<From, To>::value; // C++17 |
| 382 | template <class Fn, class... ArgTypes> inline constexpr bool is_invocable_v |
| 383 | = is_invocable<Fn, ArgTypes...>::value; // C++17 |
| 384 | template <class R, class Fn, class... ArgTypes> inline constexpr bool is_invocable_r_v |
| 385 | = is_invocable_r<R, Fn, ArgTypes...>::value; // C++17 |
| 386 | template <class Fn, class... ArgTypes> inline constexpr bool is_nothrow_invocable_v |
| 387 | = is_nothrow_invocable<Fn, ArgTypes...>::value; // C++17 |
| 388 | template <class R, class Fn, class... ArgTypes> inline constexpr bool is_nothrow_invocable_r_v |
| 389 | = is_nothrow_invocable_r<R, Fn, ArgTypes...>::value; // C++17 |
| 390 | |
| 391 | // [meta.logical], logical operator traits: |
| 392 | template<class... B> struct conjunction; // C++17 |
| 393 | template<class... B> |
| 394 | inline constexpr bool conjunction_v = conjunction<B...>::value; // C++17 |
| 395 | template<class... B> struct disjunction; // C++17 |
| 396 | template<class... B> |
| 397 | inline constexpr bool disjunction_v = disjunction<B...>::value; // C++17 |
| 398 | template<class B> struct negation; // C++17 |
| 399 | template<class B> |
| 400 | inline constexpr bool negation_v = negation<B>::value; // C++17 |
| 401 | |
| 402 | } |
| 403 | |
| 404 | */ |
| 405 | #include <__config> |
| 406 | #include <cstddef> |
| 407 | #include <version> |
| 408 | |
| 409 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 410 | #pragma GCC system_header |
| 411 | #endif |
| 412 | |
| 413 | _LIBCPP_BEGIN_NAMESPACE_STD |
| 414 | |
| 415 | template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS pair; |
| 416 | template <class _Tp> class _LIBCPP_TEMPLATE_VIS reference_wrapper; |
| 417 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash; |
| 418 | |
| 419 | template <class> |
| 420 | struct __void_t { typedef void type; }; |
| 421 | |
| 422 | template <class _Tp> |
| 423 | struct __identity { typedef _Tp type; }; |
| 424 | |
| 425 | template <class _Tp, bool> |
| 426 | struct _LIBCPP_TEMPLATE_VIS __dependent_type : public _Tp {}; |
| 427 | |
| 428 | template <bool _Bp, class _If, class _Then> |
| 429 | struct _LIBCPP_TEMPLATE_VIS conditional {typedef _If type;}; |
| 430 | template <class _If, class _Then> |
| 431 | struct _LIBCPP_TEMPLATE_VIS conditional<false, _If, _Then> {typedef _Then type;}; |
| 432 | |
| 433 | #if _LIBCPP_STD_VER > 11 |
| 434 | template <bool _Bp, class _If, class _Then> using conditional_t = typename conditional<_Bp, _If, _Then>::type; |
| 435 | #endif |
| 436 | |
| 437 | template <bool, class _Tp> struct _LIBCPP_TEMPLATE_VIS __lazy_enable_if {}; |
| 438 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS __lazy_enable_if<true, _Tp> {typedef typename _Tp::type type;}; |
| 439 | |
| 440 | template <bool, class _Tp = void> struct _LIBCPP_TEMPLATE_VIS enable_if {}; |
| 441 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS enable_if<true, _Tp> {typedef _Tp type;}; |
| 442 | |
| 443 | #if _LIBCPP_STD_VER > 11 |
| 444 | template <bool _Bp, class _Tp = void> using enable_if_t = typename enable_if<_Bp, _Tp>::type; |
| 445 | #endif |
| 446 | |
| 447 | // addressof |
| 448 | #ifndef _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF |
| 449 | |
| 450 | template <class _Tp> |
| 451 | inline _LIBCPP_CONSTEXPR_AFTER_CXX14 |
| 452 | _LIBCPP_NO_CFI _LIBCPP_INLINE_VISIBILITY |
| 453 | _Tp* |
| 454 | addressof(_Tp& __x) _NOEXCEPT |
| 455 | { |
| 456 | return __builtin_addressof(__x); |
| 457 | } |
| 458 | |
| 459 | #else |
| 460 | |
| 461 | template <class _Tp> |
| 462 | inline _LIBCPP_NO_CFI _LIBCPP_INLINE_VISIBILITY |
| 463 | _Tp* |
| 464 | addressof(_Tp& __x) _NOEXCEPT |
| 465 | { |
| 466 | return reinterpret_cast<_Tp *>( |
| 467 | const_cast<char *>(&reinterpret_cast<const volatile char &>(__x))); |
| 468 | } |
| 469 | |
| 470 | #endif // _LIBCPP_HAS_NO_BUILTIN_ADDRESSOF |
| 471 | |
| 472 | #if defined(_LIBCPP_HAS_OBJC_ARC) && !defined(_LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF) |
| 473 | // Objective-C++ Automatic Reference Counting uses qualified pointers |
| 474 | // that require special addressof() signatures. When |
| 475 | // _LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF is defined, the compiler |
| 476 | // itself is providing these definitions. Otherwise, we provide them. |
| 477 | template <class _Tp> |
| 478 | inline _LIBCPP_INLINE_VISIBILITY |
| 479 | __strong _Tp* |
| 480 | addressof(__strong _Tp& __x) _NOEXCEPT |
| 481 | { |
| 482 | return &__x; |
| 483 | } |
| 484 | |
| 485 | #ifdef _LIBCPP_HAS_OBJC_ARC_WEAK |
| 486 | template <class _Tp> |
| 487 | inline _LIBCPP_INLINE_VISIBILITY |
| 488 | __weak _Tp* |
| 489 | addressof(__weak _Tp& __x) _NOEXCEPT |
| 490 | { |
| 491 | return &__x; |
| 492 | } |
| 493 | #endif |
| 494 | |
| 495 | template <class _Tp> |
| 496 | inline _LIBCPP_INLINE_VISIBILITY |
| 497 | __autoreleasing _Tp* |
| 498 | addressof(__autoreleasing _Tp& __x) _NOEXCEPT |
| 499 | { |
| 500 | return &__x; |
| 501 | } |
| 502 | |
| 503 | template <class _Tp> |
| 504 | inline _LIBCPP_INLINE_VISIBILITY |
| 505 | __unsafe_unretained _Tp* |
| 506 | addressof(__unsafe_unretained _Tp& __x) _NOEXCEPT |
| 507 | { |
| 508 | return &__x; |
| 509 | } |
| 510 | #endif |
| 511 | |
| 512 | #if !defined(_LIBCPP_CXX03_LANG) |
| 513 | template <class _Tp> _Tp* addressof(const _Tp&&) noexcept = delete; |
| 514 | #endif |
| 515 | |
| 516 | struct __two {char __lx[2];}; |
| 517 | |
| 518 | // helper class: |
| 519 | |
| 520 | template <class _Tp, _Tp __v> |
| 521 | struct _LIBCPP_TEMPLATE_VIS integral_constant |
| 522 | { |
| 523 | static _LIBCPP_CONSTEXPR const _Tp value = __v; |
| 524 | typedef _Tp value_type; |
| 525 | typedef integral_constant type; |
| 526 | _LIBCPP_INLINE_VISIBILITY |
| 527 | _LIBCPP_CONSTEXPR operator value_type() const _NOEXCEPT {return value;} |
| 528 | #if _LIBCPP_STD_VER > 11 |
| 529 | _LIBCPP_INLINE_VISIBILITY |
| 530 | constexpr value_type operator ()() const _NOEXCEPT {return value;} |
| 531 | #endif |
| 532 | }; |
| 533 | |
| 534 | template <class _Tp, _Tp __v> |
| 535 | _LIBCPP_CONSTEXPR const _Tp integral_constant<_Tp, __v>::value; |
| 536 | |
| 537 | #if _LIBCPP_STD_VER > 14 |
| 538 | template <bool __b> |
| 539 | using bool_constant = integral_constant<bool, __b>; |
| 540 | #define _LIBCPP_BOOL_CONSTANT(__b) bool_constant<(__b)> |
| 541 | #else |
| 542 | #define _LIBCPP_BOOL_CONSTANT(__b) integral_constant<bool,(__b)> |
| 543 | #endif |
| 544 | |
| 545 | typedef _LIBCPP_BOOL_CONSTANT(true) true_type; |
| 546 | typedef _LIBCPP_BOOL_CONSTANT(false) false_type; |
| 547 | |
| 548 | #if !defined(_LIBCPP_CXX03_LANG) |
| 549 | |
| 550 | // __lazy_and |
| 551 | |
| 552 | template <bool _Last, class ..._Preds> |
| 553 | struct __lazy_and_impl; |
| 554 | |
| 555 | template <class ..._Preds> |
| 556 | struct __lazy_and_impl<false, _Preds...> : false_type {}; |
| 557 | |
| 558 | template <> |
| 559 | struct __lazy_and_impl<true> : true_type {}; |
| 560 | |
| 561 | template <class _Pred> |
| 562 | struct __lazy_and_impl<true, _Pred> : integral_constant<bool, _Pred::type::value> {}; |
| 563 | |
| 564 | template <class _Hp, class ..._Tp> |
| 565 | struct __lazy_and_impl<true, _Hp, _Tp...> : __lazy_and_impl<_Hp::type::value, _Tp...> {}; |
| 566 | |
| 567 | template <class _P1, class ..._Pr> |
| 568 | struct __lazy_and : __lazy_and_impl<_P1::type::value, _Pr...> {}; |
| 569 | |
| 570 | // __lazy_or |
| 571 | |
| 572 | template <bool _List, class ..._Preds> |
| 573 | struct __lazy_or_impl; |
| 574 | |
| 575 | template <class ..._Preds> |
| 576 | struct __lazy_or_impl<true, _Preds...> : true_type {}; |
| 577 | |
| 578 | template <> |
| 579 | struct __lazy_or_impl<false> : false_type {}; |
| 580 | |
| 581 | template <class _Hp, class ..._Tp> |
| 582 | struct __lazy_or_impl<false, _Hp, _Tp...> |
| 583 | : __lazy_or_impl<_Hp::type::value, _Tp...> {}; |
| 584 | |
| 585 | template <class _P1, class ..._Pr> |
| 586 | struct __lazy_or : __lazy_or_impl<_P1::type::value, _Pr...> {}; |
| 587 | |
| 588 | // __lazy_not |
| 589 | |
| 590 | template <class _Pred> |
| 591 | struct __lazy_not : integral_constant<bool, !_Pred::type::value> {}; |
| 592 | |
| 593 | // __and_ |
| 594 | template<class...> struct __and_; |
| 595 | template<> struct __and_<> : true_type {}; |
| 596 | |
| 597 | template<class _B0> struct __and_<_B0> : _B0 {}; |
| 598 | |
| 599 | template<class _B0, class _B1> |
| 600 | struct __and_<_B0, _B1> : conditional<_B0::value, _B1, _B0>::type {}; |
| 601 | |
| 602 | template<class _B0, class _B1, class _B2, class... _Bn> |
| 603 | struct __and_<_B0, _B1, _B2, _Bn...> |
| 604 | : conditional<_B0::value, __and_<_B1, _B2, _Bn...>, _B0>::type {}; |
| 605 | |
| 606 | // __or_ |
| 607 | template<class...> struct __or_; |
| 608 | template<> struct __or_<> : false_type {}; |
| 609 | |
| 610 | template<class _B0> struct __or_<_B0> : _B0 {}; |
| 611 | |
| 612 | template<class _B0, class _B1> |
| 613 | struct __or_<_B0, _B1> : conditional<_B0::value, _B0, _B1>::type {}; |
| 614 | |
| 615 | template<class _B0, class _B1, class _B2, class... _Bn> |
| 616 | struct __or_<_B0, _B1, _B2, _Bn...> |
| 617 | : conditional<_B0::value, _B0, __or_<_B1, _B2, _Bn...> >::type {}; |
| 618 | |
| 619 | // __not_ |
| 620 | template<class _Tp> |
| 621 | struct __not_ : conditional<_Tp::value, false_type, true_type>::type {}; |
| 622 | |
| 623 | #endif // !defined(_LIBCPP_CXX03_LANG) |
| 624 | |
| 625 | // is_const |
| 626 | |
| 627 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_const : public false_type {}; |
| 628 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_const<_Tp const> : public true_type {}; |
| 629 | |
| 630 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 631 | template <class _Tp> |
| 632 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_const_v |
| 633 | = is_const<_Tp>::value; |
| 634 | #endif |
| 635 | |
| 636 | // is_volatile |
| 637 | |
| 638 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_volatile : public false_type {}; |
| 639 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_volatile<_Tp volatile> : public true_type {}; |
| 640 | |
| 641 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 642 | template <class _Tp> |
| 643 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_volatile_v |
| 644 | = is_volatile<_Tp>::value; |
| 645 | #endif |
| 646 | |
| 647 | // remove_const |
| 648 | |
| 649 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_const {typedef _Tp type;}; |
| 650 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_const<const _Tp> {typedef _Tp type;}; |
| 651 | #if _LIBCPP_STD_VER > 11 |
| 652 | template <class _Tp> using remove_const_t = typename remove_const<_Tp>::type; |
| 653 | #endif |
| 654 | |
| 655 | // remove_volatile |
| 656 | |
| 657 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_volatile {typedef _Tp type;}; |
| 658 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_volatile<volatile _Tp> {typedef _Tp type;}; |
| 659 | #if _LIBCPP_STD_VER > 11 |
| 660 | template <class _Tp> using remove_volatile_t = typename remove_volatile<_Tp>::type; |
| 661 | #endif |
| 662 | |
| 663 | // remove_cv |
| 664 | |
| 665 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_cv |
| 666 | {typedef typename remove_volatile<typename remove_const<_Tp>::type>::type type;}; |
| 667 | #if _LIBCPP_STD_VER > 11 |
| 668 | template <class _Tp> using remove_cv_t = typename remove_cv<_Tp>::type; |
| 669 | #endif |
| 670 | |
| 671 | // is_void |
| 672 | |
| 673 | template <class _Tp> struct __libcpp_is_void : public false_type {}; |
| 674 | template <> struct __libcpp_is_void<void> : public true_type {}; |
| 675 | |
| 676 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_void |
| 677 | : public __libcpp_is_void<typename remove_cv<_Tp>::type> {}; |
| 678 | |
| 679 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 680 | template <class _Tp> |
| 681 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_void_v |
| 682 | = is_void<_Tp>::value; |
| 683 | #endif |
| 684 | |
| 685 | // __is_nullptr_t |
| 686 | |
| 687 | template <class _Tp> struct __is_nullptr_t_impl : public false_type {}; |
| 688 | template <> struct __is_nullptr_t_impl<nullptr_t> : public true_type {}; |
| 689 | |
| 690 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS __is_nullptr_t |
| 691 | : public __is_nullptr_t_impl<typename remove_cv<_Tp>::type> {}; |
| 692 | |
| 693 | #if _LIBCPP_STD_VER > 11 |
| 694 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_null_pointer |
| 695 | : public __is_nullptr_t_impl<typename remove_cv<_Tp>::type> {}; |
| 696 | |
| 697 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 698 | template <class _Tp> |
| 699 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_null_pointer_v |
| 700 | = is_null_pointer<_Tp>::value; |
| 701 | #endif |
| 702 | #endif |
| 703 | |
| 704 | // is_integral |
| 705 | |
| 706 | template <class _Tp> struct __libcpp_is_integral : public false_type {}; |
| 707 | template <> struct __libcpp_is_integral<bool> : public true_type {}; |
| 708 | template <> struct __libcpp_is_integral<char> : public true_type {}; |
| 709 | template <> struct __libcpp_is_integral<signed char> : public true_type {}; |
| 710 | template <> struct __libcpp_is_integral<unsigned char> : public true_type {}; |
| 711 | template <> struct __libcpp_is_integral<wchar_t> : public true_type {}; |
| 712 | #ifndef _LIBCPP_NO_HAS_CHAR8_T |
| 713 | template <> struct __libcpp_is_integral<char8_t> : public true_type {}; |
| 714 | #endif |
| 715 | #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS |
| 716 | template <> struct __libcpp_is_integral<char16_t> : public true_type {}; |
| 717 | template <> struct __libcpp_is_integral<char32_t> : public true_type {}; |
| 718 | #endif // _LIBCPP_HAS_NO_UNICODE_CHARS |
| 719 | template <> struct __libcpp_is_integral<short> : public true_type {}; |
| 720 | template <> struct __libcpp_is_integral<unsigned short> : public true_type {}; |
| 721 | template <> struct __libcpp_is_integral<int> : public true_type {}; |
| 722 | template <> struct __libcpp_is_integral<unsigned int> : public true_type {}; |
| 723 | template <> struct __libcpp_is_integral<long> : public true_type {}; |
| 724 | template <> struct __libcpp_is_integral<unsigned long> : public true_type {}; |
| 725 | template <> struct __libcpp_is_integral<long long> : public true_type {}; |
| 726 | template <> struct __libcpp_is_integral<unsigned long long> : public true_type {}; |
| 727 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 728 | template <> struct __libcpp_is_integral<__int128_t> : public true_type {}; |
| 729 | template <> struct __libcpp_is_integral<__uint128_t> : public true_type {}; |
| 730 | #endif |
| 731 | |
| 732 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_integral |
| 733 | : public __libcpp_is_integral<typename remove_cv<_Tp>::type> {}; |
| 734 | |
| 735 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 736 | template <class _Tp> |
| 737 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_integral_v |
| 738 | = is_integral<_Tp>::value; |
| 739 | #endif |
| 740 | |
| 741 | // is_floating_point |
| 742 | |
| 743 | template <class _Tp> struct __libcpp_is_floating_point : public false_type {}; |
| 744 | template <> struct __libcpp_is_floating_point<float> : public true_type {}; |
| 745 | template <> struct __libcpp_is_floating_point<double> : public true_type {}; |
| 746 | template <> struct __libcpp_is_floating_point<long double> : public true_type {}; |
| 747 | |
| 748 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_floating_point |
| 749 | : public __libcpp_is_floating_point<typename remove_cv<_Tp>::type> {}; |
| 750 | |
| 751 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 752 | template <class _Tp> |
| 753 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_floating_point_v |
| 754 | = is_floating_point<_Tp>::value; |
| 755 | #endif |
| 756 | |
| 757 | // is_array |
| 758 | |
| 759 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_array |
| 760 | : public false_type {}; |
| 761 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_array<_Tp[]> |
| 762 | : public true_type {}; |
| 763 | template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS is_array<_Tp[_Np]> |
| 764 | : public true_type {}; |
| 765 | |
| 766 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 767 | template <class _Tp> |
| 768 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_array_v |
| 769 | = is_array<_Tp>::value; |
| 770 | #endif |
| 771 | |
| 772 | // is_pointer |
| 773 | |
| 774 | template <class _Tp> struct __libcpp_is_pointer : public false_type {}; |
| 775 | template <class _Tp> struct __libcpp_is_pointer<_Tp*> : public true_type {}; |
| 776 | |
| 777 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_pointer |
| 778 | : public __libcpp_is_pointer<typename remove_cv<_Tp>::type> {}; |
| 779 | |
| 780 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 781 | template <class _Tp> |
| 782 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_pointer_v |
| 783 | = is_pointer<_Tp>::value; |
| 784 | #endif |
| 785 | |
| 786 | // is_reference |
| 787 | |
| 788 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_lvalue_reference : public false_type {}; |
| 789 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_lvalue_reference<_Tp&> : public true_type {}; |
| 790 | |
| 791 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_rvalue_reference : public false_type {}; |
| 792 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 793 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_rvalue_reference<_Tp&&> : public true_type {}; |
| 794 | #endif |
| 795 | |
| 796 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_reference : public false_type {}; |
| 797 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_reference<_Tp&> : public true_type {}; |
| 798 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 799 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_reference<_Tp&&> : public true_type {}; |
| 800 | #endif |
| 801 | |
| 802 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 803 | template <class _Tp> |
| 804 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_reference_v |
| 805 | = is_reference<_Tp>::value; |
| 806 | |
| 807 | template <class _Tp> |
| 808 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_lvalue_reference_v |
| 809 | = is_lvalue_reference<_Tp>::value; |
| 810 | |
| 811 | template <class _Tp> |
| 812 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_rvalue_reference_v |
| 813 | = is_rvalue_reference<_Tp>::value; |
| 814 | #endif |
| 815 | // is_union |
| 816 | |
| 817 | #if __has_feature(is_union) || (_GNUC_VER >= 403) |
| 818 | |
| 819 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_union |
| 820 | : public integral_constant<bool, __is_union(_Tp)> {}; |
| 821 | |
| 822 | #else |
| 823 | |
| 824 | template <class _Tp> struct __libcpp_union : public false_type {}; |
| 825 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_union |
| 826 | : public __libcpp_union<typename remove_cv<_Tp>::type> {}; |
| 827 | |
| 828 | #endif |
| 829 | |
| 830 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 831 | template <class _Tp> |
| 832 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_union_v |
| 833 | = is_union<_Tp>::value; |
| 834 | #endif |
| 835 | |
| 836 | // is_class |
| 837 | |
| 838 | #if __has_feature(is_class) || (_GNUC_VER >= 403) |
| 839 | |
| 840 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_class |
| 841 | : public integral_constant<bool, __is_class(_Tp)> {}; |
| 842 | |
| 843 | #else |
| 844 | |
| 845 | namespace __is_class_imp |
| 846 | { |
| 847 | template <class _Tp> char __test(int _Tp::*); |
| 848 | template <class _Tp> __two __test(...); |
| 849 | } |
| 850 | |
| 851 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_class |
| 852 | : public integral_constant<bool, sizeof(__is_class_imp::__test<_Tp>(0)) == 1 && !is_union<_Tp>::value> {}; |
| 853 | |
| 854 | #endif |
| 855 | |
| 856 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 857 | template <class _Tp> |
| 858 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_class_v |
| 859 | = is_class<_Tp>::value; |
| 860 | #endif |
| 861 | |
| 862 | // is_same |
| 863 | |
| 864 | template <class _Tp, class _Up> struct _LIBCPP_TEMPLATE_VIS is_same : public false_type {}; |
| 865 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_same<_Tp, _Tp> : public true_type {}; |
| 866 | |
| 867 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 868 | template <class _Tp, class _Up> |
| 869 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_same_v |
| 870 | = is_same<_Tp, _Up>::value; |
| 871 | #endif |
| 872 | |
| 873 | // is_function |
| 874 | |
| 875 | namespace __libcpp_is_function_imp |
| 876 | { |
| 877 | struct __dummy_type {}; |
| 878 | template <class _Tp> char __test(_Tp*); |
| 879 | template <class _Tp> char __test(__dummy_type); |
| 880 | template <class _Tp> __two __test(...); |
| 881 | template <class _Tp> _Tp& __source(int); |
| 882 | template <class _Tp> __dummy_type __source(...); |
| 883 | } |
| 884 | |
| 885 | template <class _Tp, bool = is_class<_Tp>::value || |
| 886 | is_union<_Tp>::value || |
| 887 | is_void<_Tp>::value || |
| 888 | is_reference<_Tp>::value || |
| 889 | __is_nullptr_t<_Tp>::value > |
| 890 | struct __libcpp_is_function |
| 891 | : public integral_constant<bool, sizeof(__libcpp_is_function_imp::__test<_Tp>(__libcpp_is_function_imp::__source<_Tp>(0))) == 1> |
| 892 | {}; |
| 893 | template <class _Tp> struct __libcpp_is_function<_Tp, true> : public false_type {}; |
| 894 | |
| 895 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_function |
| 896 | : public __libcpp_is_function<_Tp> {}; |
| 897 | |
| 898 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 899 | template <class _Tp> |
| 900 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_function_v |
| 901 | = is_function<_Tp>::value; |
| 902 | #endif |
| 903 | |
| 904 | // is_member_function_pointer |
| 905 | |
| 906 | // template <class _Tp> struct __libcpp_is_member_function_pointer : public false_type {}; |
| 907 | // template <class _Tp, class _Up> struct __libcpp_is_member_function_pointer<_Tp _Up::*> : public is_function<_Tp> {}; |
| 908 | // |
| 909 | |
| 910 | template <class _MP, bool _IsMemberFunctionPtr, bool _IsMemberObjectPtr> |
| 911 | struct __member_pointer_traits_imp |
| 912 | { // forward declaration; specializations later |
| 913 | }; |
| 914 | |
| 915 | |
| 916 | template <class _Tp> struct __libcpp_is_member_function_pointer |
| 917 | : public false_type {}; |
| 918 | |
| 919 | template <class _Ret, class _Class> |
| 920 | struct __libcpp_is_member_function_pointer<_Ret _Class::*> |
| 921 | : public is_function<_Ret> {}; |
| 922 | |
| 923 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_member_function_pointer |
| 924 | : public __libcpp_is_member_function_pointer<typename remove_cv<_Tp>::type>::type {}; |
| 925 | |
| 926 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 927 | template <class _Tp> |
| 928 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_member_function_pointer_v |
| 929 | = is_member_function_pointer<_Tp>::value; |
| 930 | #endif |
| 931 | |
| 932 | // is_member_pointer |
| 933 | |
| 934 | template <class _Tp> struct __libcpp_is_member_pointer : public false_type {}; |
| 935 | template <class _Tp, class _Up> struct __libcpp_is_member_pointer<_Tp _Up::*> : public true_type {}; |
| 936 | |
| 937 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_member_pointer |
| 938 | : public __libcpp_is_member_pointer<typename remove_cv<_Tp>::type> {}; |
| 939 | |
| 940 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 941 | template <class _Tp> |
| 942 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_member_pointer_v |
| 943 | = is_member_pointer<_Tp>::value; |
| 944 | #endif |
| 945 | |
| 946 | // is_member_object_pointer |
| 947 | |
| 948 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_member_object_pointer |
| 949 | : public integral_constant<bool, is_member_pointer<_Tp>::value && |
| 950 | !is_member_function_pointer<_Tp>::value> {}; |
| 951 | |
| 952 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 953 | template <class _Tp> |
| 954 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_member_object_pointer_v |
| 955 | = is_member_object_pointer<_Tp>::value; |
| 956 | #endif |
| 957 | |
| 958 | // is_enum |
| 959 | |
| 960 | #if __has_feature(is_enum) || (_GNUC_VER >= 403) |
| 961 | |
| 962 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_enum |
| 963 | : public integral_constant<bool, __is_enum(_Tp)> {}; |
| 964 | |
| 965 | #else |
| 966 | |
| 967 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_enum |
| 968 | : public integral_constant<bool, !is_void<_Tp>::value && |
| 969 | !is_integral<_Tp>::value && |
| 970 | !is_floating_point<_Tp>::value && |
| 971 | !is_array<_Tp>::value && |
| 972 | !is_pointer<_Tp>::value && |
| 973 | !is_reference<_Tp>::value && |
| 974 | !is_member_pointer<_Tp>::value && |
| 975 | !is_union<_Tp>::value && |
| 976 | !is_class<_Tp>::value && |
| 977 | !is_function<_Tp>::value > {}; |
| 978 | |
| 979 | #endif |
| 980 | |
| 981 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 982 | template <class _Tp> |
| 983 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_enum_v |
| 984 | = is_enum<_Tp>::value; |
| 985 | #endif |
| 986 | |
| 987 | // is_arithmetic |
| 988 | |
| 989 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_arithmetic |
| 990 | : public integral_constant<bool, is_integral<_Tp>::value || |
| 991 | is_floating_point<_Tp>::value> {}; |
| 992 | |
| 993 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 994 | template <class _Tp> |
| 995 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_arithmetic_v |
| 996 | = is_arithmetic<_Tp>::value; |
| 997 | #endif |
| 998 | |
| 999 | // is_fundamental |
| 1000 | |
| 1001 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_fundamental |
| 1002 | : public integral_constant<bool, is_void<_Tp>::value || |
| 1003 | __is_nullptr_t<_Tp>::value || |
| 1004 | is_arithmetic<_Tp>::value> {}; |
| 1005 | |
| 1006 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1007 | template <class _Tp> |
| 1008 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_fundamental_v |
| 1009 | = is_fundamental<_Tp>::value; |
| 1010 | #endif |
| 1011 | |
| 1012 | // is_scalar |
| 1013 | |
| 1014 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_scalar |
| 1015 | : public integral_constant<bool, is_arithmetic<_Tp>::value || |
| 1016 | is_member_pointer<_Tp>::value || |
| 1017 | is_pointer<_Tp>::value || |
| 1018 | __is_nullptr_t<_Tp>::value || |
| 1019 | is_enum<_Tp>::value > {}; |
| 1020 | |
| 1021 | template <> struct _LIBCPP_TEMPLATE_VIS is_scalar<nullptr_t> : public true_type {}; |
| 1022 | |
| 1023 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1024 | template <class _Tp> |
| 1025 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_scalar_v |
| 1026 | = is_scalar<_Tp>::value; |
| 1027 | #endif |
| 1028 | |
| 1029 | // is_object |
| 1030 | |
| 1031 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_object |
| 1032 | : public integral_constant<bool, is_scalar<_Tp>::value || |
| 1033 | is_array<_Tp>::value || |
| 1034 | is_union<_Tp>::value || |
| 1035 | is_class<_Tp>::value > {}; |
| 1036 | |
| 1037 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1038 | template <class _Tp> |
| 1039 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_object_v |
| 1040 | = is_object<_Tp>::value; |
| 1041 | #endif |
| 1042 | |
| 1043 | // is_compound |
| 1044 | |
| 1045 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_compound |
| 1046 | : public integral_constant<bool, !is_fundamental<_Tp>::value> {}; |
| 1047 | |
| 1048 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1049 | template <class _Tp> |
| 1050 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_compound_v |
| 1051 | = is_compound<_Tp>::value; |
| 1052 | #endif |
| 1053 | |
| 1054 | |
| 1055 | // __is_referenceable [defns.referenceable] |
| 1056 | |
| 1057 | struct __is_referenceable_impl { |
| 1058 | template <class _Tp> static _Tp& __test(int); |
| 1059 | template <class _Tp> static __two __test(...); |
| 1060 | }; |
| 1061 | |
| 1062 | template <class _Tp> |
| 1063 | struct __is_referenceable : integral_constant<bool, |
| 1064 | !is_same<decltype(__is_referenceable_impl::__test<_Tp>(0)), __two>::value> {}; |
| 1065 | |
| 1066 | |
| 1067 | // add_const |
| 1068 | |
| 1069 | template <class _Tp, bool = is_reference<_Tp>::value || |
| 1070 | is_function<_Tp>::value || |
| 1071 | is_const<_Tp>::value > |
| 1072 | struct __add_const {typedef _Tp type;}; |
| 1073 | |
| 1074 | template <class _Tp> |
| 1075 | struct __add_const<_Tp, false> {typedef const _Tp type;}; |
| 1076 | |
| 1077 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_const |
| 1078 | {typedef typename __add_const<_Tp>::type type;}; |
| 1079 | |
| 1080 | #if _LIBCPP_STD_VER > 11 |
| 1081 | template <class _Tp> using add_const_t = typename add_const<_Tp>::type; |
| 1082 | #endif |
| 1083 | |
| 1084 | // add_volatile |
| 1085 | |
| 1086 | template <class _Tp, bool = is_reference<_Tp>::value || |
| 1087 | is_function<_Tp>::value || |
| 1088 | is_volatile<_Tp>::value > |
| 1089 | struct __add_volatile {typedef _Tp type;}; |
| 1090 | |
| 1091 | template <class _Tp> |
| 1092 | struct __add_volatile<_Tp, false> {typedef volatile _Tp type;}; |
| 1093 | |
| 1094 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_volatile |
| 1095 | {typedef typename __add_volatile<_Tp>::type type;}; |
| 1096 | |
| 1097 | #if _LIBCPP_STD_VER > 11 |
| 1098 | template <class _Tp> using add_volatile_t = typename add_volatile<_Tp>::type; |
| 1099 | #endif |
| 1100 | |
| 1101 | // add_cv |
| 1102 | |
| 1103 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_cv |
| 1104 | {typedef typename add_const<typename add_volatile<_Tp>::type>::type type;}; |
| 1105 | |
| 1106 | #if _LIBCPP_STD_VER > 11 |
| 1107 | template <class _Tp> using add_cv_t = typename add_cv<_Tp>::type; |
| 1108 | #endif |
| 1109 | |
| 1110 | // remove_reference |
| 1111 | |
| 1112 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_reference {typedef _Tp type;}; |
| 1113 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_reference<_Tp&> {typedef _Tp type;}; |
| 1114 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 1115 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_reference<_Tp&&> {typedef _Tp type;}; |
| 1116 | #endif |
| 1117 | |
| 1118 | #if _LIBCPP_STD_VER > 11 |
| 1119 | template <class _Tp> using remove_reference_t = typename remove_reference<_Tp>::type; |
| 1120 | #endif |
| 1121 | |
| 1122 | // add_lvalue_reference |
| 1123 | |
| 1124 | template <class _Tp, bool = __is_referenceable<_Tp>::value> struct __add_lvalue_reference_impl { typedef _Tp type; }; |
| 1125 | template <class _Tp > struct __add_lvalue_reference_impl<_Tp, true> { typedef _Tp& type; }; |
| 1126 | |
| 1127 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_lvalue_reference |
| 1128 | {typedef typename __add_lvalue_reference_impl<_Tp>::type type;}; |
| 1129 | |
| 1130 | #if _LIBCPP_STD_VER > 11 |
| 1131 | template <class _Tp> using add_lvalue_reference_t = typename add_lvalue_reference<_Tp>::type; |
| 1132 | #endif |
| 1133 | |
| 1134 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 1135 | |
| 1136 | template <class _Tp, bool = __is_referenceable<_Tp>::value> struct __add_rvalue_reference_impl { typedef _Tp type; }; |
| 1137 | template <class _Tp > struct __add_rvalue_reference_impl<_Tp, true> { typedef _Tp&& type; }; |
| 1138 | |
| 1139 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_rvalue_reference |
| 1140 | {typedef typename __add_rvalue_reference_impl<_Tp>::type type;}; |
| 1141 | |
| 1142 | #if _LIBCPP_STD_VER > 11 |
| 1143 | template <class _Tp> using add_rvalue_reference_t = typename add_rvalue_reference<_Tp>::type; |
| 1144 | #endif |
| 1145 | |
| 1146 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 1147 | |
| 1148 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 1149 | |
| 1150 | template <class _Tp> _Tp&& __declval(int); |
| 1151 | template <class _Tp> _Tp __declval(long); |
| 1152 | |
| 1153 | template <class _Tp> |
| 1154 | decltype(_VSTD::__declval<_Tp>(0)) |
| 1155 | declval() _NOEXCEPT; |
| 1156 | |
| 1157 | #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 1158 | |
| 1159 | template <class _Tp> |
| 1160 | typename add_lvalue_reference<_Tp>::type |
| 1161 | declval(); |
| 1162 | |
| 1163 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 1164 | |
| 1165 | // __uncvref |
| 1166 | |
| 1167 | template <class _Tp> |
| 1168 | struct __uncvref { |
| 1169 | typedef typename remove_cv<typename remove_reference<_Tp>::type>::type type; |
| 1170 | }; |
| 1171 | |
| 1172 | template <class _Tp> |
| 1173 | struct __unconstref { |
| 1174 | typedef typename remove_const<typename remove_reference<_Tp>::type>::type type; |
| 1175 | }; |
| 1176 | |
| 1177 | #ifndef _LIBCPP_CXX03_LANG |
| 1178 | template <class _Tp> |
| 1179 | using __uncvref_t = typename __uncvref<_Tp>::type; |
| 1180 | #endif |
| 1181 | |
| 1182 | // __is_same_uncvref |
| 1183 | |
| 1184 | template <class _Tp, class _Up> |
| 1185 | struct __is_same_uncvref : is_same<typename __uncvref<_Tp>::type, |
| 1186 | typename __uncvref<_Up>::type> {}; |
| 1187 | |
| 1188 | #if _LIBCPP_STD_VER > 17 |
| 1189 | // remove_cvref - same as __uncvref |
| 1190 | template <class _Tp> |
| 1191 | struct remove_cvref : public __uncvref<_Tp> {}; |
| 1192 | |
| 1193 | template <class _Tp> using remove_cvref_t = typename remove_cvref<_Tp>::type; |
| 1194 | #endif |
| 1195 | |
| 1196 | |
| 1197 | struct __any |
| 1198 | { |
| 1199 | __any(...); |
| 1200 | }; |
| 1201 | |
| 1202 | // remove_pointer |
| 1203 | |
| 1204 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer {typedef _Tp type;}; |
| 1205 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp*> {typedef _Tp type;}; |
| 1206 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp* const> {typedef _Tp type;}; |
| 1207 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp* volatile> {typedef _Tp type;}; |
| 1208 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_pointer<_Tp* const volatile> {typedef _Tp type;}; |
| 1209 | |
| 1210 | #if _LIBCPP_STD_VER > 11 |
| 1211 | template <class _Tp> using remove_pointer_t = typename remove_pointer<_Tp>::type; |
| 1212 | #endif |
| 1213 | |
| 1214 | // add_pointer |
| 1215 | |
| 1216 | template <class _Tp, |
| 1217 | bool = __is_referenceable<_Tp>::value || |
| 1218 | is_same<typename remove_cv<_Tp>::type, void>::value> |
| 1219 | struct __add_pointer_impl |
| 1220 | {typedef typename remove_reference<_Tp>::type* type;}; |
| 1221 | template <class _Tp> struct __add_pointer_impl<_Tp, false> |
| 1222 | {typedef _Tp type;}; |
| 1223 | |
| 1224 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS add_pointer |
| 1225 | {typedef typename __add_pointer_impl<_Tp>::type type;}; |
| 1226 | |
| 1227 | #if _LIBCPP_STD_VER > 11 |
| 1228 | template <class _Tp> using add_pointer_t = typename add_pointer<_Tp>::type; |
| 1229 | #endif |
| 1230 | |
| 1231 | // type_identity |
| 1232 | #if _LIBCPP_STD_VER > 17 |
| 1233 | template<class _Tp> struct type_identity { typedef _Tp type; }; |
| 1234 | template<class _Tp> using type_identity_t = typename type_identity<_Tp>::type; |
| 1235 | #endif |
| 1236 | |
| 1237 | // is_signed |
| 1238 | |
| 1239 | template <class _Tp, bool = is_integral<_Tp>::value> |
| 1240 | struct __libcpp_is_signed_impl : public _LIBCPP_BOOL_CONSTANT(_Tp(-1) < _Tp(0)) {}; |
| 1241 | |
| 1242 | template <class _Tp> |
| 1243 | struct __libcpp_is_signed_impl<_Tp, false> : public true_type {}; // floating point |
| 1244 | |
| 1245 | template <class _Tp, bool = is_arithmetic<_Tp>::value> |
| 1246 | struct __libcpp_is_signed : public __libcpp_is_signed_impl<_Tp> {}; |
| 1247 | |
| 1248 | template <class _Tp> struct __libcpp_is_signed<_Tp, false> : public false_type {}; |
| 1249 | |
| 1250 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_signed : public __libcpp_is_signed<_Tp> {}; |
| 1251 | |
| 1252 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1253 | template <class _Tp> |
| 1254 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_signed_v |
| 1255 | = is_signed<_Tp>::value; |
| 1256 | #endif |
| 1257 | |
| 1258 | // is_unsigned |
| 1259 | |
| 1260 | template <class _Tp, bool = is_integral<_Tp>::value> |
| 1261 | struct __libcpp_is_unsigned_impl : public _LIBCPP_BOOL_CONSTANT(_Tp(0) < _Tp(-1)) {}; |
| 1262 | |
| 1263 | template <class _Tp> |
| 1264 | struct __libcpp_is_unsigned_impl<_Tp, false> : public false_type {}; // floating point |
| 1265 | |
| 1266 | template <class _Tp, bool = is_arithmetic<_Tp>::value> |
| 1267 | struct __libcpp_is_unsigned : public __libcpp_is_unsigned_impl<_Tp> {}; |
| 1268 | |
| 1269 | template <class _Tp> struct __libcpp_is_unsigned<_Tp, false> : public false_type {}; |
| 1270 | |
| 1271 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_unsigned : public __libcpp_is_unsigned<_Tp> {}; |
| 1272 | |
| 1273 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1274 | template <class _Tp> |
| 1275 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_unsigned_v |
| 1276 | = is_unsigned<_Tp>::value; |
| 1277 | #endif |
| 1278 | |
| 1279 | // rank |
| 1280 | |
| 1281 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS rank |
| 1282 | : public integral_constant<size_t, 0> {}; |
| 1283 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS rank<_Tp[]> |
| 1284 | : public integral_constant<size_t, rank<_Tp>::value + 1> {}; |
| 1285 | template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS rank<_Tp[_Np]> |
| 1286 | : public integral_constant<size_t, rank<_Tp>::value + 1> {}; |
| 1287 | |
| 1288 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1289 | template <class _Tp> |
| 1290 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR size_t rank_v |
| 1291 | = rank<_Tp>::value; |
| 1292 | #endif |
| 1293 | |
| 1294 | // extent |
| 1295 | |
| 1296 | template <class _Tp, unsigned _Ip = 0> struct _LIBCPP_TEMPLATE_VIS extent |
| 1297 | : public integral_constant<size_t, 0> {}; |
| 1298 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[], 0> |
| 1299 | : public integral_constant<size_t, 0> {}; |
| 1300 | template <class _Tp, unsigned _Ip> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[], _Ip> |
| 1301 | : public integral_constant<size_t, extent<_Tp, _Ip-1>::value> {}; |
| 1302 | template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[_Np], 0> |
| 1303 | : public integral_constant<size_t, _Np> {}; |
| 1304 | template <class _Tp, size_t _Np, unsigned _Ip> struct _LIBCPP_TEMPLATE_VIS extent<_Tp[_Np], _Ip> |
| 1305 | : public integral_constant<size_t, extent<_Tp, _Ip-1>::value> {}; |
| 1306 | |
| 1307 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1308 | template <class _Tp, unsigned _Ip = 0> |
| 1309 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR size_t extent_v |
| 1310 | = extent<_Tp, _Ip>::value; |
| 1311 | #endif |
| 1312 | |
| 1313 | // remove_extent |
| 1314 | |
| 1315 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_extent |
| 1316 | {typedef _Tp type;}; |
| 1317 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_extent<_Tp[]> |
| 1318 | {typedef _Tp type;}; |
| 1319 | template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS remove_extent<_Tp[_Np]> |
| 1320 | {typedef _Tp type;}; |
| 1321 | |
| 1322 | #if _LIBCPP_STD_VER > 11 |
| 1323 | template <class _Tp> using remove_extent_t = typename remove_extent<_Tp>::type; |
| 1324 | #endif |
| 1325 | |
| 1326 | // remove_all_extents |
| 1327 | |
| 1328 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_all_extents |
| 1329 | {typedef _Tp type;}; |
| 1330 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS remove_all_extents<_Tp[]> |
| 1331 | {typedef typename remove_all_extents<_Tp>::type type;}; |
| 1332 | template <class _Tp, size_t _Np> struct _LIBCPP_TEMPLATE_VIS remove_all_extents<_Tp[_Np]> |
| 1333 | {typedef typename remove_all_extents<_Tp>::type type;}; |
| 1334 | |
| 1335 | #if _LIBCPP_STD_VER > 11 |
| 1336 | template <class _Tp> using remove_all_extents_t = typename remove_all_extents<_Tp>::type; |
| 1337 | #endif |
| 1338 | |
| 1339 | // decay |
| 1340 | |
| 1341 | template <class _Up, bool> |
| 1342 | struct __decay { |
| 1343 | typedef typename remove_cv<_Up>::type type; |
| 1344 | }; |
| 1345 | |
| 1346 | template <class _Up> |
| 1347 | struct __decay<_Up, true> { |
| 1348 | public: |
| 1349 | typedef typename conditional |
| 1350 | < |
| 1351 | is_array<_Up>::value, |
| 1352 | typename remove_extent<_Up>::type*, |
| 1353 | typename conditional |
| 1354 | < |
| 1355 | is_function<_Up>::value, |
| 1356 | typename add_pointer<_Up>::type, |
| 1357 | typename remove_cv<_Up>::type |
| 1358 | >::type |
| 1359 | >::type type; |
| 1360 | }; |
| 1361 | |
| 1362 | template <class _Tp> |
| 1363 | struct _LIBCPP_TEMPLATE_VIS decay |
| 1364 | { |
| 1365 | private: |
| 1366 | typedef typename remove_reference<_Tp>::type _Up; |
| 1367 | public: |
| 1368 | typedef typename __decay<_Up, __is_referenceable<_Up>::value>::type type; |
| 1369 | }; |
| 1370 | |
| 1371 | #if _LIBCPP_STD_VER > 11 |
| 1372 | template <class _Tp> using decay_t = typename decay<_Tp>::type; |
| 1373 | #endif |
| 1374 | |
| 1375 | // is_abstract |
| 1376 | |
| 1377 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_abstract |
| 1378 | : public integral_constant<bool, __is_abstract(_Tp)> {}; |
| 1379 | |
| 1380 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1381 | template <class _Tp> |
| 1382 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_abstract_v |
| 1383 | = is_abstract<_Tp>::value; |
| 1384 | #endif |
| 1385 | |
| 1386 | // is_final |
| 1387 | |
| 1388 | #if defined(_LIBCPP_HAS_IS_FINAL) |
| 1389 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS |
| 1390 | __libcpp_is_final : public integral_constant<bool, __is_final(_Tp)> {}; |
| 1391 | #else |
| 1392 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS |
| 1393 | __libcpp_is_final : public false_type {}; |
| 1394 | #endif |
| 1395 | |
| 1396 | #if defined(_LIBCPP_HAS_IS_FINAL) && _LIBCPP_STD_VER > 11 |
| 1397 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS |
| 1398 | is_final : public integral_constant<bool, __is_final(_Tp)> {}; |
| 1399 | #endif |
| 1400 | |
| 1401 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1402 | template <class _Tp> |
| 1403 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_final_v |
| 1404 | = is_final<_Tp>::value; |
| 1405 | #endif |
| 1406 | |
| 1407 | // is_aggregate |
| 1408 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_IS_AGGREGATE) |
| 1409 | |
| 1410 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS |
| 1411 | is_aggregate : public integral_constant<bool, __is_aggregate(_Tp)> {}; |
| 1412 | |
| 1413 | #if !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1414 | template <class _Tp> |
| 1415 | _LIBCPP_INLINE_VAR constexpr bool is_aggregate_v |
| 1416 | = is_aggregate<_Tp>::value; |
| 1417 | #endif |
| 1418 | |
| 1419 | #endif // _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_IS_AGGREGATE) |
| 1420 | |
| 1421 | // is_base_of |
| 1422 | |
| 1423 | #ifdef _LIBCPP_HAS_IS_BASE_OF |
| 1424 | |
| 1425 | template <class _Bp, class _Dp> |
| 1426 | struct _LIBCPP_TEMPLATE_VIS is_base_of |
| 1427 | : public integral_constant<bool, __is_base_of(_Bp, _Dp)> {}; |
| 1428 | |
| 1429 | #else // _LIBCPP_HAS_IS_BASE_OF |
| 1430 | |
| 1431 | namespace __is_base_of_imp |
| 1432 | { |
| 1433 | template <class _Tp> |
| 1434 | struct _Dst |
| 1435 | { |
| 1436 | _Dst(const volatile _Tp &); |
| 1437 | }; |
| 1438 | template <class _Tp> |
| 1439 | struct _Src |
| 1440 | { |
| 1441 | operator const volatile _Tp &(); |
| 1442 | template <class _Up> operator const _Dst<_Up> &(); |
| 1443 | }; |
| 1444 | template <size_t> struct __one { typedef char type; }; |
| 1445 | template <class _Bp, class _Dp> typename __one<sizeof(_Dst<_Bp>(declval<_Src<_Dp> >()))>::type __test(int); |
| 1446 | template <class _Bp, class _Dp> __two __test(...); |
| 1447 | } |
| 1448 | |
| 1449 | template <class _Bp, class _Dp> |
| 1450 | struct _LIBCPP_TEMPLATE_VIS is_base_of |
| 1451 | : public integral_constant<bool, is_class<_Bp>::value && |
| 1452 | sizeof(__is_base_of_imp::__test<_Bp, _Dp>(0)) == 2> {}; |
| 1453 | |
| 1454 | #endif // _LIBCPP_HAS_IS_BASE_OF |
| 1455 | |
| 1456 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1457 | template <class _Bp, class _Dp> |
| 1458 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_base_of_v |
| 1459 | = is_base_of<_Bp, _Dp>::value; |
| 1460 | #endif |
| 1461 | |
| 1462 | // is_convertible |
| 1463 | |
| 1464 | #if __has_feature(is_convertible_to) && !defined(_LIBCPP_USE_IS_CONVERTIBLE_FALLBACK) |
| 1465 | |
| 1466 | template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS is_convertible |
| 1467 | : public integral_constant<bool, __is_convertible_to(_T1, _T2) && |
| 1468 | !is_abstract<_T2>::value> {}; |
| 1469 | |
| 1470 | #else // __has_feature(is_convertible_to) |
| 1471 | |
| 1472 | namespace __is_convertible_imp |
| 1473 | { |
| 1474 | template <class _Tp> void __test_convert(_Tp); |
| 1475 | |
| 1476 | template <class _From, class _To, class = void> |
| 1477 | struct __is_convertible_test : public false_type {}; |
| 1478 | |
| 1479 | template <class _From, class _To> |
| 1480 | struct __is_convertible_test<_From, _To, |
| 1481 | decltype(_VSTD::__is_convertible_imp::__test_convert<_To>(_VSTD::declval<_From>()))> : public true_type |
| 1482 | {}; |
| 1483 | |
| 1484 | template <class _Tp, bool _IsArray = is_array<_Tp>::value, |
| 1485 | bool _IsFunction = is_function<_Tp>::value, |
| 1486 | bool _IsVoid = is_void<_Tp>::value> |
| 1487 | struct __is_array_function_or_void {enum {value = 0};}; |
| 1488 | template <class _Tp> struct __is_array_function_or_void<_Tp, true, false, false> {enum {value = 1};}; |
| 1489 | template <class _Tp> struct __is_array_function_or_void<_Tp, false, true, false> {enum {value = 2};}; |
| 1490 | template <class _Tp> struct __is_array_function_or_void<_Tp, false, false, true> {enum {value = 3};}; |
| 1491 | } |
| 1492 | |
| 1493 | template <class _Tp, |
| 1494 | unsigned = __is_convertible_imp::__is_array_function_or_void<typename remove_reference<_Tp>::type>::value> |
| 1495 | struct __is_convertible_check |
| 1496 | { |
| 1497 | static const size_t __v = 0; |
| 1498 | }; |
| 1499 | |
| 1500 | template <class _Tp> |
| 1501 | struct __is_convertible_check<_Tp, 0> |
| 1502 | { |
| 1503 | static const size_t __v = sizeof(_Tp); |
| 1504 | }; |
| 1505 | |
| 1506 | template <class _T1, class _T2, |
| 1507 | unsigned _T1_is_array_function_or_void = __is_convertible_imp::__is_array_function_or_void<_T1>::value, |
| 1508 | unsigned _T2_is_array_function_or_void = __is_convertible_imp::__is_array_function_or_void<_T2>::value> |
| 1509 | struct __is_convertible |
| 1510 | : public integral_constant<bool, |
| 1511 | __is_convertible_imp::__is_convertible_test<_T1, _T2>::value |
| 1512 | #if defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) |
| 1513 | && !(!is_function<_T1>::value && !is_reference<_T1>::value && is_reference<_T2>::value |
| 1514 | && (!is_const<typename remove_reference<_T2>::type>::value |
| 1515 | || is_volatile<typename remove_reference<_T2>::type>::value) |
| 1516 | && (is_same<typename remove_cv<_T1>::type, |
| 1517 | typename remove_cv<typename remove_reference<_T2>::type>::type>::value |
| 1518 | || is_base_of<typename remove_reference<_T2>::type, _T1>::value)) |
| 1519 | #endif |
| 1520 | > |
| 1521 | {}; |
| 1522 | |
| 1523 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 0, 1> : public false_type {}; |
| 1524 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 1> : public false_type {}; |
| 1525 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 1> : public false_type {}; |
| 1526 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 1> : public false_type {}; |
| 1527 | |
| 1528 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 0, 2> : public false_type {}; |
| 1529 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 2> : public false_type {}; |
| 1530 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 2> : public false_type {}; |
| 1531 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 2> : public false_type {}; |
| 1532 | |
| 1533 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 0, 3> : public false_type {}; |
| 1534 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 1, 3> : public false_type {}; |
| 1535 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 2, 3> : public false_type {}; |
| 1536 | template <class _T1, class _T2> struct __is_convertible<_T1, _T2, 3, 3> : public true_type {}; |
| 1537 | |
| 1538 | template <class _T1, class _T2> struct _LIBCPP_TEMPLATE_VIS is_convertible |
| 1539 | : public __is_convertible<_T1, _T2> |
| 1540 | { |
| 1541 | static const size_t __complete_check1 = __is_convertible_check<_T1>::__v; |
| 1542 | static const size_t __complete_check2 = __is_convertible_check<_T2>::__v; |
| 1543 | }; |
| 1544 | |
| 1545 | #endif // __has_feature(is_convertible_to) |
| 1546 | |
| 1547 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1548 | template <class _From, class _To> |
| 1549 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_convertible_v |
| 1550 | = is_convertible<_From, _To>::value; |
| 1551 | #endif |
| 1552 | |
| 1553 | // is_empty |
| 1554 | |
| 1555 | #if __has_feature(is_empty) || (_GNUC_VER >= 407) |
| 1556 | |
| 1557 | template <class _Tp> |
| 1558 | struct _LIBCPP_TEMPLATE_VIS is_empty |
| 1559 | : public integral_constant<bool, __is_empty(_Tp)> {}; |
| 1560 | |
| 1561 | #else // __has_feature(is_empty) |
| 1562 | |
| 1563 | template <class _Tp> |
| 1564 | struct __is_empty1 |
| 1565 | : public _Tp |
| 1566 | { |
| 1567 | double __lx; |
| 1568 | }; |
| 1569 | |
| 1570 | struct __is_empty2 |
| 1571 | { |
| 1572 | double __lx; |
| 1573 | }; |
| 1574 | |
| 1575 | template <class _Tp, bool = is_class<_Tp>::value> |
| 1576 | struct __libcpp_empty : public integral_constant<bool, sizeof(__is_empty1<_Tp>) == sizeof(__is_empty2)> {}; |
| 1577 | |
| 1578 | template <class _Tp> struct __libcpp_empty<_Tp, false> : public false_type {}; |
| 1579 | |
| 1580 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_empty : public __libcpp_empty<_Tp> {}; |
| 1581 | |
| 1582 | #endif // __has_feature(is_empty) |
| 1583 | |
| 1584 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1585 | template <class _Tp> |
| 1586 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_empty_v |
| 1587 | = is_empty<_Tp>::value; |
| 1588 | #endif |
| 1589 | |
| 1590 | // is_polymorphic |
| 1591 | |
| 1592 | #if __has_feature(is_polymorphic) || defined(_LIBCPP_COMPILER_MSVC) |
| 1593 | |
| 1594 | template <class _Tp> |
| 1595 | struct _LIBCPP_TEMPLATE_VIS is_polymorphic |
| 1596 | : public integral_constant<bool, __is_polymorphic(_Tp)> {}; |
| 1597 | |
| 1598 | #else |
| 1599 | |
| 1600 | template<typename _Tp> char &__is_polymorphic_impl( |
| 1601 | typename enable_if<sizeof((_Tp*)dynamic_cast<const volatile void*>(declval<_Tp*>())) != 0, |
| 1602 | int>::type); |
| 1603 | template<typename _Tp> __two &__is_polymorphic_impl(...); |
| 1604 | |
| 1605 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_polymorphic |
| 1606 | : public integral_constant<bool, sizeof(__is_polymorphic_impl<_Tp>(0)) == 1> {}; |
| 1607 | |
| 1608 | #endif // __has_feature(is_polymorphic) |
| 1609 | |
| 1610 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1611 | template <class _Tp> |
| 1612 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_polymorphic_v |
| 1613 | = is_polymorphic<_Tp>::value; |
| 1614 | #endif |
| 1615 | |
| 1616 | // has_virtual_destructor |
| 1617 | |
| 1618 | #if __has_feature(has_virtual_destructor) || (_GNUC_VER >= 403) |
| 1619 | |
| 1620 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_virtual_destructor |
| 1621 | : public integral_constant<bool, __has_virtual_destructor(_Tp)> {}; |
| 1622 | |
| 1623 | #else |
| 1624 | |
| 1625 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_virtual_destructor |
| 1626 | : public false_type {}; |
| 1627 | |
| 1628 | #endif |
| 1629 | |
| 1630 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1631 | template <class _Tp> |
| 1632 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool has_virtual_destructor_v |
| 1633 | = has_virtual_destructor<_Tp>::value; |
| 1634 | #endif |
| 1635 | |
| 1636 | // has_unique_object_representations |
| 1637 | |
| 1638 | #if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_UNIQUE_OBJECT_REPRESENTATIONS) |
| 1639 | |
| 1640 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS has_unique_object_representations |
| 1641 | : public integral_constant<bool, |
| 1642 | __has_unique_object_representations(remove_cv_t<remove_all_extents_t<_Tp>>)> {}; |
| 1643 | |
| 1644 | #if !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1645 | template <class _Tp> |
| 1646 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool has_unique_object_representations_v |
| 1647 | = has_unique_object_representations<_Tp>::value; |
| 1648 | #endif |
| 1649 | |
| 1650 | #endif |
| 1651 | |
| 1652 | // alignment_of |
| 1653 | |
| 1654 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS alignment_of |
| 1655 | : public integral_constant<size_t, __alignof__(_Tp)> {}; |
| 1656 | |
| 1657 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 1658 | template <class _Tp> |
| 1659 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR size_t alignment_of_v |
| 1660 | = alignment_of<_Tp>::value; |
| 1661 | #endif |
| 1662 | |
| 1663 | // aligned_storage |
| 1664 | |
| 1665 | template <class _Hp, class _Tp> |
| 1666 | struct __type_list |
| 1667 | { |
| 1668 | typedef _Hp _Head; |
| 1669 | typedef _Tp _Tail; |
| 1670 | }; |
| 1671 | |
| 1672 | struct __nat |
| 1673 | { |
| 1674 | #ifndef _LIBCPP_CXX03_LANG |
| 1675 | __nat() = delete; |
| 1676 | __nat(const __nat&) = delete; |
| 1677 | __nat& operator=(const __nat&) = delete; |
| 1678 | ~__nat() = delete; |
| 1679 | #endif |
| 1680 | }; |
| 1681 | |
| 1682 | template <class _Tp> |
| 1683 | struct __align_type |
| 1684 | { |
| 1685 | static const size_t value = alignment_of<_Tp>::value; |
| 1686 | typedef _Tp type; |
| 1687 | }; |
| 1688 | |
| 1689 | struct __struct_double {long double __lx;}; |
| 1690 | struct __struct_double4 {double __lx[4];}; |
| 1691 | |
| 1692 | typedef |
| 1693 | __type_list<__align_type<unsigned char>, |
| 1694 | __type_list<__align_type<unsigned short>, |
| 1695 | __type_list<__align_type<unsigned int>, |
| 1696 | __type_list<__align_type<unsigned long>, |
| 1697 | __type_list<__align_type<unsigned long long>, |
| 1698 | __type_list<__align_type<double>, |
| 1699 | __type_list<__align_type<long double>, |
| 1700 | __type_list<__align_type<__struct_double>, |
| 1701 | __type_list<__align_type<__struct_double4>, |
| 1702 | __type_list<__align_type<int*>, |
| 1703 | __nat |
| 1704 | > > > > > > > > > > __all_types; |
| 1705 | |
| 1706 | template <class _TL, size_t _Align> struct __find_pod; |
| 1707 | |
| 1708 | template <class _Hp, size_t _Align> |
| 1709 | struct __find_pod<__type_list<_Hp, __nat>, _Align> |
| 1710 | { |
| 1711 | typedef typename conditional< |
| 1712 | _Align == _Hp::value, |
| 1713 | typename _Hp::type, |
| 1714 | void |
| 1715 | >::type type; |
| 1716 | }; |
| 1717 | |
| 1718 | template <class _Hp, class _Tp, size_t _Align> |
| 1719 | struct __find_pod<__type_list<_Hp, _Tp>, _Align> |
| 1720 | { |
| 1721 | typedef typename conditional< |
| 1722 | _Align == _Hp::value, |
| 1723 | typename _Hp::type, |
| 1724 | typename __find_pod<_Tp, _Align>::type |
| 1725 | >::type type; |
| 1726 | }; |
| 1727 | |
| 1728 | template <class _TL, size_t _Len> struct __find_max_align; |
| 1729 | |
| 1730 | template <class _Hp, size_t _Len> |
| 1731 | struct __find_max_align<__type_list<_Hp, __nat>, _Len> : public integral_constant<size_t, _Hp::value> {}; |
| 1732 | |
| 1733 | template <size_t _Len, size_t _A1, size_t _A2> |
| 1734 | struct __select_align |
| 1735 | { |
| 1736 | private: |
| 1737 | static const size_t __min = _A2 < _A1 ? _A2 : _A1; |
| 1738 | static const size_t __max = _A1 < _A2 ? _A2 : _A1; |
| 1739 | public: |
| 1740 | static const size_t value = _Len < __max ? __min : __max; |
| 1741 | }; |
| 1742 | |
| 1743 | template <class _Hp, class _Tp, size_t _Len> |
| 1744 | struct __find_max_align<__type_list<_Hp, _Tp>, _Len> |
| 1745 | : public integral_constant<size_t, __select_align<_Len, _Hp::value, __find_max_align<_Tp, _Len>::value>::value> {}; |
| 1746 | |
| 1747 | template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value> |
| 1748 | struct _LIBCPP_TEMPLATE_VIS aligned_storage |
| 1749 | { |
| 1750 | typedef typename __find_pod<__all_types, _Align>::type _Aligner; |
| 1751 | static_assert(!is_void<_Aligner>::value, ""); |
| 1752 | union type |
| 1753 | { |
| 1754 | _Aligner __align; |
| 1755 | unsigned char __data[(_Len + _Align - 1)/_Align * _Align]; |
| 1756 | }; |
| 1757 | }; |
| 1758 | |
| 1759 | #if _LIBCPP_STD_VER > 11 |
| 1760 | template <size_t _Len, size_t _Align = __find_max_align<__all_types, _Len>::value> |
| 1761 | using aligned_storage_t = typename aligned_storage<_Len, _Align>::type; |
| 1762 | #endif |
| 1763 | |
| 1764 | #define _CREATE_ALIGNED_STORAGE_SPECIALIZATION(n) \ |
| 1765 | template <size_t _Len>\ |
| 1766 | struct _LIBCPP_TEMPLATE_VIS aligned_storage<_Len, n>\ |
| 1767 | {\ |
| 1768 | struct _ALIGNAS(n) type\ |
| 1769 | {\ |
| 1770 | unsigned char __lx[(_Len + n - 1)/n * n];\ |
| 1771 | };\ |
| 1772 | } |
| 1773 | |
| 1774 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1); |
| 1775 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2); |
| 1776 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4); |
| 1777 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x8); |
| 1778 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x10); |
| 1779 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x20); |
| 1780 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x40); |
| 1781 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x80); |
| 1782 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x100); |
| 1783 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x200); |
| 1784 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x400); |
| 1785 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x800); |
| 1786 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x1000); |
| 1787 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x2000); |
| 1788 | // PE/COFF does not support alignment beyond 8192 (=0x2000) |
| 1789 | #if !defined(_LIBCPP_OBJECT_FORMAT_COFF) |
| 1790 | _CREATE_ALIGNED_STORAGE_SPECIALIZATION(0x4000); |
| 1791 | #endif // !defined(_LIBCPP_OBJECT_FORMAT_COFF) |
| 1792 | |
| 1793 | #undef _CREATE_ALIGNED_STORAGE_SPECIALIZATION |
| 1794 | |
| 1795 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
| 1796 | |
| 1797 | // aligned_union |
| 1798 | |
| 1799 | template <size_t _I0, size_t ..._In> |
| 1800 | struct __static_max; |
| 1801 | |
| 1802 | template <size_t _I0> |
| 1803 | struct __static_max<_I0> |
| 1804 | { |
| 1805 | static const size_t value = _I0; |
| 1806 | }; |
| 1807 | |
| 1808 | template <size_t _I0, size_t _I1, size_t ..._In> |
| 1809 | struct __static_max<_I0, _I1, _In...> |
| 1810 | { |
| 1811 | static const size_t value = _I0 >= _I1 ? __static_max<_I0, _In...>::value : |
| 1812 | __static_max<_I1, _In...>::value; |
| 1813 | }; |
| 1814 | |
| 1815 | template <size_t _Len, class _Type0, class ..._Types> |
| 1816 | struct aligned_union |
| 1817 | { |
| 1818 | static const size_t alignment_value = __static_max<__alignof__(_Type0), |
| 1819 | __alignof__(_Types)...>::value; |
| 1820 | static const size_t __len = __static_max<_Len, sizeof(_Type0), |
| 1821 | sizeof(_Types)...>::value; |
| 1822 | typedef typename aligned_storage<__len, alignment_value>::type type; |
| 1823 | }; |
| 1824 | |
| 1825 | #if _LIBCPP_STD_VER > 11 |
| 1826 | template <size_t _Len, class ..._Types> using aligned_union_t = typename aligned_union<_Len, _Types...>::type; |
| 1827 | #endif |
| 1828 | |
| 1829 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 1830 | |
| 1831 | template <class _Tp> |
| 1832 | struct __numeric_type |
| 1833 | { |
| 1834 | static void __test(...); |
| 1835 | static float __test(float); |
| 1836 | static double __test(char); |
| 1837 | static double __test(int); |
| 1838 | static double __test(unsigned); |
| 1839 | static double __test(long); |
| 1840 | static double __test(unsigned long); |
| 1841 | static double __test(long long); |
| 1842 | static double __test(unsigned long long); |
| 1843 | static double __test(double); |
| 1844 | static long double __test(long double); |
| 1845 | |
| 1846 | typedef decltype(__test(declval<_Tp>())) type; |
| 1847 | static const bool value = !is_same<type, void>::value; |
| 1848 | }; |
| 1849 | |
| 1850 | template <> |
| 1851 | struct __numeric_type<void> |
| 1852 | { |
| 1853 | static const bool value = true; |
| 1854 | }; |
| 1855 | |
| 1856 | // __promote |
| 1857 | |
| 1858 | template <class _A1, class _A2 = void, class _A3 = void, |
| 1859 | bool = __numeric_type<_A1>::value && |
| 1860 | __numeric_type<_A2>::value && |
| 1861 | __numeric_type<_A3>::value> |
| 1862 | class __promote_imp |
| 1863 | { |
| 1864 | public: |
| 1865 | static const bool value = false; |
| 1866 | }; |
| 1867 | |
| 1868 | template <class _A1, class _A2, class _A3> |
| 1869 | class __promote_imp<_A1, _A2, _A3, true> |
| 1870 | { |
| 1871 | private: |
| 1872 | typedef typename __promote_imp<_A1>::type __type1; |
| 1873 | typedef typename __promote_imp<_A2>::type __type2; |
| 1874 | typedef typename __promote_imp<_A3>::type __type3; |
| 1875 | public: |
| 1876 | typedef decltype(__type1() + __type2() + __type3()) type; |
| 1877 | static const bool value = true; |
| 1878 | }; |
| 1879 | |
| 1880 | template <class _A1, class _A2> |
| 1881 | class __promote_imp<_A1, _A2, void, true> |
| 1882 | { |
| 1883 | private: |
| 1884 | typedef typename __promote_imp<_A1>::type __type1; |
| 1885 | typedef typename __promote_imp<_A2>::type __type2; |
| 1886 | public: |
| 1887 | typedef decltype(__type1() + __type2()) type; |
| 1888 | static const bool value = true; |
| 1889 | }; |
| 1890 | |
| 1891 | template <class _A1> |
| 1892 | class __promote_imp<_A1, void, void, true> |
| 1893 | { |
| 1894 | public: |
| 1895 | typedef typename __numeric_type<_A1>::type type; |
| 1896 | static const bool value = true; |
| 1897 | }; |
| 1898 | |
| 1899 | template <class _A1, class _A2 = void, class _A3 = void> |
| 1900 | class __promote : public __promote_imp<_A1, _A2, _A3> {}; |
| 1901 | |
| 1902 | // make_signed / make_unsigned |
| 1903 | |
| 1904 | typedef |
| 1905 | __type_list<signed char, |
| 1906 | __type_list<signed short, |
| 1907 | __type_list<signed int, |
| 1908 | __type_list<signed long, |
| 1909 | __type_list<signed long long, |
| 1910 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 1911 | __type_list<__int128_t, |
| 1912 | #endif |
| 1913 | __nat |
| 1914 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 1915 | > |
| 1916 | #endif |
| 1917 | > > > > > __signed_types; |
| 1918 | |
| 1919 | typedef |
| 1920 | __type_list<unsigned char, |
| 1921 | __type_list<unsigned short, |
| 1922 | __type_list<unsigned int, |
| 1923 | __type_list<unsigned long, |
| 1924 | __type_list<unsigned long long, |
| 1925 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 1926 | __type_list<__uint128_t, |
| 1927 | #endif |
| 1928 | __nat |
| 1929 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 1930 | > |
| 1931 | #endif |
| 1932 | > > > > > __unsigned_types; |
| 1933 | |
| 1934 | template <class _TypeList, size_t _Size, bool = _Size <= sizeof(typename _TypeList::_Head)> struct __find_first; |
| 1935 | |
| 1936 | template <class _Hp, class _Tp, size_t _Size> |
| 1937 | struct __find_first<__type_list<_Hp, _Tp>, _Size, true> |
| 1938 | { |
| 1939 | typedef _Hp type; |
| 1940 | }; |
| 1941 | |
| 1942 | template <class _Hp, class _Tp, size_t _Size> |
| 1943 | struct __find_first<__type_list<_Hp, _Tp>, _Size, false> |
| 1944 | { |
| 1945 | typedef typename __find_first<_Tp, _Size>::type type; |
| 1946 | }; |
| 1947 | |
| 1948 | template <class _Tp, class _Up, bool = is_const<typename remove_reference<_Tp>::type>::value, |
| 1949 | bool = is_volatile<typename remove_reference<_Tp>::type>::value> |
| 1950 | struct __apply_cv |
| 1951 | { |
| 1952 | typedef _Up type; |
| 1953 | }; |
| 1954 | |
| 1955 | template <class _Tp, class _Up> |
| 1956 | struct __apply_cv<_Tp, _Up, true, false> |
| 1957 | { |
| 1958 | typedef const _Up type; |
| 1959 | }; |
| 1960 | |
| 1961 | template <class _Tp, class _Up> |
| 1962 | struct __apply_cv<_Tp, _Up, false, true> |
| 1963 | { |
| 1964 | typedef volatile _Up type; |
| 1965 | }; |
| 1966 | |
| 1967 | template <class _Tp, class _Up> |
| 1968 | struct __apply_cv<_Tp, _Up, true, true> |
| 1969 | { |
| 1970 | typedef const volatile _Up type; |
| 1971 | }; |
| 1972 | |
| 1973 | template <class _Tp, class _Up> |
| 1974 | struct __apply_cv<_Tp&, _Up, false, false> |
| 1975 | { |
| 1976 | typedef _Up& type; |
| 1977 | }; |
| 1978 | |
| 1979 | template <class _Tp, class _Up> |
| 1980 | struct __apply_cv<_Tp&, _Up, true, false> |
| 1981 | { |
| 1982 | typedef const _Up& type; |
| 1983 | }; |
| 1984 | |
| 1985 | template <class _Tp, class _Up> |
| 1986 | struct __apply_cv<_Tp&, _Up, false, true> |
| 1987 | { |
| 1988 | typedef volatile _Up& type; |
| 1989 | }; |
| 1990 | |
| 1991 | template <class _Tp, class _Up> |
| 1992 | struct __apply_cv<_Tp&, _Up, true, true> |
| 1993 | { |
| 1994 | typedef const volatile _Up& type; |
| 1995 | }; |
| 1996 | |
| 1997 | template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value> |
| 1998 | struct __make_signed {}; |
| 1999 | |
| 2000 | template <class _Tp> |
| 2001 | struct __make_signed<_Tp, true> |
| 2002 | { |
| 2003 | typedef typename __find_first<__signed_types, sizeof(_Tp)>::type type; |
| 2004 | }; |
| 2005 | |
| 2006 | template <> struct __make_signed<bool, true> {}; |
| 2007 | template <> struct __make_signed< signed short, true> {typedef short type;}; |
| 2008 | template <> struct __make_signed<unsigned short, true> {typedef short type;}; |
| 2009 | template <> struct __make_signed< signed int, true> {typedef int type;}; |
| 2010 | template <> struct __make_signed<unsigned int, true> {typedef int type;}; |
| 2011 | template <> struct __make_signed< signed long, true> {typedef long type;}; |
| 2012 | template <> struct __make_signed<unsigned long, true> {typedef long type;}; |
| 2013 | template <> struct __make_signed< signed long long, true> {typedef long long type;}; |
| 2014 | template <> struct __make_signed<unsigned long long, true> {typedef long long type;}; |
| 2015 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 2016 | template <> struct __make_signed<__int128_t, true> {typedef __int128_t type;}; |
| 2017 | template <> struct __make_signed<__uint128_t, true> {typedef __int128_t type;}; |
| 2018 | #endif |
| 2019 | |
| 2020 | template <class _Tp> |
| 2021 | struct _LIBCPP_TEMPLATE_VIS make_signed |
| 2022 | { |
| 2023 | typedef typename __apply_cv<_Tp, typename __make_signed<typename remove_cv<_Tp>::type>::type>::type type; |
| 2024 | }; |
| 2025 | |
| 2026 | #if _LIBCPP_STD_VER > 11 |
| 2027 | template <class _Tp> using make_signed_t = typename make_signed<_Tp>::type; |
| 2028 | #endif |
| 2029 | |
| 2030 | template <class _Tp, bool = is_integral<_Tp>::value || is_enum<_Tp>::value> |
| 2031 | struct __make_unsigned {}; |
| 2032 | |
| 2033 | template <class _Tp> |
| 2034 | struct __make_unsigned<_Tp, true> |
| 2035 | { |
| 2036 | typedef typename __find_first<__unsigned_types, sizeof(_Tp)>::type type; |
| 2037 | }; |
| 2038 | |
| 2039 | template <> struct __make_unsigned<bool, true> {}; |
| 2040 | template <> struct __make_unsigned< signed short, true> {typedef unsigned short type;}; |
| 2041 | template <> struct __make_unsigned<unsigned short, true> {typedef unsigned short type;}; |
| 2042 | template <> struct __make_unsigned< signed int, true> {typedef unsigned int type;}; |
| 2043 | template <> struct __make_unsigned<unsigned int, true> {typedef unsigned int type;}; |
| 2044 | template <> struct __make_unsigned< signed long, true> {typedef unsigned long type;}; |
| 2045 | template <> struct __make_unsigned<unsigned long, true> {typedef unsigned long type;}; |
| 2046 | template <> struct __make_unsigned< signed long long, true> {typedef unsigned long long type;}; |
| 2047 | template <> struct __make_unsigned<unsigned long long, true> {typedef unsigned long long type;}; |
| 2048 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 2049 | template <> struct __make_unsigned<__int128_t, true> {typedef __uint128_t type;}; |
| 2050 | template <> struct __make_unsigned<__uint128_t, true> {typedef __uint128_t type;}; |
| 2051 | #endif |
| 2052 | |
| 2053 | template <class _Tp> |
| 2054 | struct _LIBCPP_TEMPLATE_VIS make_unsigned |
| 2055 | { |
| 2056 | typedef typename __apply_cv<_Tp, typename __make_unsigned<typename remove_cv<_Tp>::type>::type>::type type; |
| 2057 | }; |
| 2058 | |
| 2059 | #if _LIBCPP_STD_VER > 11 |
| 2060 | template <class _Tp> using make_unsigned_t = typename make_unsigned<_Tp>::type; |
| 2061 | #endif |
| 2062 | |
| 2063 | #ifdef _LIBCPP_HAS_NO_VARIADICS |
| 2064 | |
| 2065 | template <class _Tp, class _Up = void, class _Vp = void> |
| 2066 | struct _LIBCPP_TEMPLATE_VIS common_type |
| 2067 | { |
| 2068 | public: |
| 2069 | typedef typename common_type<typename common_type<_Tp, _Up>::type, _Vp>::type type; |
| 2070 | }; |
| 2071 | |
| 2072 | template <> |
| 2073 | struct _LIBCPP_TEMPLATE_VIS common_type<void, void, void> |
| 2074 | { |
| 2075 | public: |
| 2076 | typedef void type; |
| 2077 | }; |
| 2078 | |
| 2079 | template <class _Tp> |
| 2080 | struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, void, void> |
| 2081 | { |
| 2082 | public: |
| 2083 | typedef typename common_type<_Tp, _Tp>::type type; |
| 2084 | }; |
| 2085 | |
| 2086 | template <class _Tp, class _Up> |
| 2087 | struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, _Up, void> |
| 2088 | { |
| 2089 | typedef typename decay<decltype( |
| 2090 | true ? _VSTD::declval<_Tp>() : _VSTD::declval<_Up>() |
| 2091 | )>::type type; |
| 2092 | }; |
| 2093 | |
| 2094 | #else // _LIBCPP_HAS_NO_VARIADICS |
| 2095 | |
| 2096 | // bullet 1 - sizeof...(Tp) == 0 |
| 2097 | |
| 2098 | template <class ..._Tp> |
| 2099 | struct _LIBCPP_TEMPLATE_VIS common_type {}; |
| 2100 | |
| 2101 | // bullet 2 - sizeof...(Tp) == 1 |
| 2102 | |
| 2103 | template <class _Tp> |
| 2104 | struct _LIBCPP_TEMPLATE_VIS common_type<_Tp> |
| 2105 | : public common_type<_Tp, _Tp> {}; |
| 2106 | |
| 2107 | // bullet 3 - sizeof...(Tp) == 2 |
| 2108 | |
| 2109 | template <class _Tp, class _Up, class = void> |
| 2110 | struct __common_type2_imp {}; |
| 2111 | |
| 2112 | template <class _Tp, class _Up> |
| 2113 | struct __common_type2_imp<_Tp, _Up, |
| 2114 | typename __void_t<decltype( |
| 2115 | true ? _VSTD::declval<_Tp>() : _VSTD::declval<_Up>() |
| 2116 | )>::type> |
| 2117 | { |
| 2118 | typedef typename decay<decltype( |
| 2119 | true ? _VSTD::declval<_Tp>() : _VSTD::declval<_Up>() |
| 2120 | )>::type type; |
| 2121 | }; |
| 2122 | |
| 2123 | template <class _Tp, class _Up, |
| 2124 | class _DTp = typename decay<_Tp>::type, |
| 2125 | class _DUp = typename decay<_Up>::type> |
| 2126 | using __common_type2 = |
| 2127 | typename conditional< |
| 2128 | is_same<_Tp, _DTp>::value && is_same<_Up, _DUp>::value, |
| 2129 | __common_type2_imp<_Tp, _Up>, |
| 2130 | common_type<_DTp, _DUp> |
| 2131 | >::type; |
| 2132 | |
| 2133 | template <class _Tp, class _Up> |
| 2134 | struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, _Up> |
| 2135 | : __common_type2<_Tp, _Up> {}; |
| 2136 | |
| 2137 | // bullet 4 - sizeof...(Tp) > 2 |
| 2138 | |
| 2139 | template <class ...Tp> struct __common_types; |
| 2140 | |
| 2141 | template <class, class = void> |
| 2142 | struct __common_type_impl {}; |
| 2143 | |
| 2144 | template <class _Tp, class _Up> |
| 2145 | struct __common_type_impl< |
| 2146 | __common_types<_Tp, _Up>, |
| 2147 | typename __void_t<typename common_type<_Tp, _Up>::type>::type> |
| 2148 | { |
| 2149 | typedef typename common_type<_Tp, _Up>::type type; |
| 2150 | }; |
| 2151 | |
| 2152 | template <class _Tp, class _Up, class ..._Vp> |
| 2153 | struct __common_type_impl<__common_types<_Tp, _Up, _Vp...>, |
| 2154 | typename __void_t<typename common_type<_Tp, _Up>::type>::type> |
| 2155 | : __common_type_impl< |
| 2156 | __common_types<typename common_type<_Tp, _Up>::type, _Vp...> > |
| 2157 | { |
| 2158 | |
| 2159 | }; |
| 2160 | |
| 2161 | template <class _Tp, class _Up, class ..._Vp> |
| 2162 | struct _LIBCPP_TEMPLATE_VIS common_type<_Tp, _Up, _Vp...> |
| 2163 | : __common_type_impl<__common_types<_Tp, _Up, _Vp...> > {}; |
| 2164 | |
| 2165 | #if _LIBCPP_STD_VER > 11 |
| 2166 | template <class ..._Tp> using common_type_t = typename common_type<_Tp...>::type; |
| 2167 | #endif |
| 2168 | |
| 2169 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 2170 | |
| 2171 | // is_assignable |
| 2172 | |
| 2173 | template<typename, typename _Tp> struct __select_2nd { typedef _Tp type; }; |
| 2174 | |
| 2175 | template <class _Tp, class _Arg> |
| 2176 | typename __select_2nd<decltype((_VSTD::declval<_Tp>() = _VSTD::declval<_Arg>())), true_type>::type |
| 2177 | __is_assignable_test(int); |
| 2178 | |
| 2179 | template <class, class> |
| 2180 | false_type __is_assignable_test(...); |
| 2181 | |
| 2182 | |
| 2183 | template <class _Tp, class _Arg, bool = is_void<_Tp>::value || is_void<_Arg>::value> |
| 2184 | struct __is_assignable_imp |
| 2185 | : public decltype((_VSTD::__is_assignable_test<_Tp, _Arg>(0))) {}; |
| 2186 | |
| 2187 | template <class _Tp, class _Arg> |
| 2188 | struct __is_assignable_imp<_Tp, _Arg, true> |
| 2189 | : public false_type |
| 2190 | { |
| 2191 | }; |
| 2192 | |
| 2193 | template <class _Tp, class _Arg> |
| 2194 | struct is_assignable |
| 2195 | : public __is_assignable_imp<_Tp, _Arg> {}; |
| 2196 | |
| 2197 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 2198 | template <class _Tp, class _Arg> |
| 2199 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_assignable_v |
| 2200 | = is_assignable<_Tp, _Arg>::value; |
| 2201 | #endif |
| 2202 | |
| 2203 | // is_copy_assignable |
| 2204 | |
| 2205 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_copy_assignable |
| 2206 | : public is_assignable<typename add_lvalue_reference<_Tp>::type, |
| 2207 | typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; |
| 2208 | |
| 2209 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 2210 | template <class _Tp> |
| 2211 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_copy_assignable_v |
| 2212 | = is_copy_assignable<_Tp>::value; |
| 2213 | #endif |
| 2214 | |
| 2215 | // is_move_assignable |
| 2216 | |
| 2217 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_move_assignable |
| 2218 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 2219 | : public is_assignable<typename add_lvalue_reference<_Tp>::type, |
| 2220 | typename add_rvalue_reference<_Tp>::type> {}; |
| 2221 | #else |
| 2222 | : public is_copy_assignable<_Tp> {}; |
| 2223 | #endif |
| 2224 | |
| 2225 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 2226 | template <class _Tp> |
| 2227 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_move_assignable_v |
| 2228 | = is_move_assignable<_Tp>::value; |
| 2229 | #endif |
| 2230 | |
| 2231 | // is_destructible |
| 2232 | |
| 2233 | // if it's a reference, return true |
| 2234 | // if it's a function, return false |
| 2235 | // if it's void, return false |
| 2236 | // if it's an array of unknown bound, return false |
| 2237 | // Otherwise, return "std::declval<_Up&>().~_Up()" is well-formed |
| 2238 | // where _Up is remove_all_extents<_Tp>::type |
| 2239 | |
| 2240 | template <class> |
| 2241 | struct __is_destructible_apply { typedef int type; }; |
| 2242 | |
| 2243 | template <typename _Tp> |
| 2244 | struct __is_destructor_wellformed { |
| 2245 | template <typename _Tp1> |
| 2246 | static char __test ( |
| 2247 | typename __is_destructible_apply<decltype(_VSTD::declval<_Tp1&>().~_Tp1())>::type |
| 2248 | ); |
| 2249 | |
| 2250 | template <typename _Tp1> |
| 2251 | static __two __test (...); |
| 2252 | |
| 2253 | static const bool value = sizeof(__test<_Tp>(12)) == sizeof(char); |
| 2254 | }; |
| 2255 | |
| 2256 | template <class _Tp, bool> |
| 2257 | struct __destructible_imp; |
| 2258 | |
| 2259 | template <class _Tp> |
| 2260 | struct __destructible_imp<_Tp, false> |
| 2261 | : public _VSTD::integral_constant<bool, |
| 2262 | __is_destructor_wellformed<typename _VSTD::remove_all_extents<_Tp>::type>::value> {}; |
| 2263 | |
| 2264 | template <class _Tp> |
| 2265 | struct __destructible_imp<_Tp, true> |
| 2266 | : public _VSTD::true_type {}; |
| 2267 | |
| 2268 | template <class _Tp, bool> |
| 2269 | struct __destructible_false; |
| 2270 | |
| 2271 | template <class _Tp> |
| 2272 | struct __destructible_false<_Tp, false> : public __destructible_imp<_Tp, _VSTD::is_reference<_Tp>::value> {}; |
| 2273 | |
| 2274 | template <class _Tp> |
| 2275 | struct __destructible_false<_Tp, true> : public _VSTD::false_type {}; |
| 2276 | |
| 2277 | template <class _Tp> |
| 2278 | struct is_destructible |
| 2279 | : public __destructible_false<_Tp, _VSTD::is_function<_Tp>::value> {}; |
| 2280 | |
| 2281 | template <class _Tp> |
| 2282 | struct is_destructible<_Tp[]> |
| 2283 | : public _VSTD::false_type {}; |
| 2284 | |
| 2285 | template <> |
| 2286 | struct is_destructible<void> |
| 2287 | : public _VSTD::false_type {}; |
| 2288 | |
| 2289 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 2290 | template <class _Tp> |
| 2291 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_destructible_v |
| 2292 | = is_destructible<_Tp>::value; |
| 2293 | #endif |
| 2294 | |
| 2295 | // move |
| 2296 | |
| 2297 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 2298 | |
| 2299 | template <class _Tp> |
| 2300 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 2301 | typename remove_reference<_Tp>::type&& |
| 2302 | move(_Tp&& __t) _NOEXCEPT |
| 2303 | { |
| 2304 | typedef typename remove_reference<_Tp>::type _Up; |
| 2305 | return static_cast<_Up&&>(__t); |
| 2306 | } |
| 2307 | |
| 2308 | template <class _Tp> |
| 2309 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 2310 | _Tp&& |
| 2311 | forward(typename remove_reference<_Tp>::type& __t) _NOEXCEPT |
| 2312 | { |
| 2313 | return static_cast<_Tp&&>(__t); |
| 2314 | } |
| 2315 | |
| 2316 | template <class _Tp> |
| 2317 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 2318 | _Tp&& |
| 2319 | forward(typename remove_reference<_Tp>::type&& __t) _NOEXCEPT |
| 2320 | { |
| 2321 | static_assert(!is_lvalue_reference<_Tp>::value, |
| 2322 | "can not forward an rvalue as an lvalue"); |
| 2323 | return static_cast<_Tp&&>(__t); |
| 2324 | } |
| 2325 | |
| 2326 | #else // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 2327 | |
| 2328 | template <class _Tp> |
| 2329 | inline _LIBCPP_INLINE_VISIBILITY |
| 2330 | _Tp& |
| 2331 | move(_Tp& __t) |
| 2332 | { |
| 2333 | return __t; |
| 2334 | } |
| 2335 | |
| 2336 | template <class _Tp> |
| 2337 | inline _LIBCPP_INLINE_VISIBILITY |
| 2338 | const _Tp& |
| 2339 | move(const _Tp& __t) |
| 2340 | { |
| 2341 | return __t; |
| 2342 | } |
| 2343 | |
| 2344 | template <class _Tp> |
| 2345 | inline _LIBCPP_INLINE_VISIBILITY |
| 2346 | _Tp& |
| 2347 | forward(typename remove_reference<_Tp>::type& __t) _NOEXCEPT |
| 2348 | { |
| 2349 | return __t; |
| 2350 | } |
| 2351 | |
| 2352 | |
| 2353 | template <class _Tp> |
| 2354 | class __rv |
| 2355 | { |
| 2356 | typedef typename remove_reference<_Tp>::type _Trr; |
| 2357 | _Trr& t_; |
| 2358 | public: |
| 2359 | _LIBCPP_INLINE_VISIBILITY |
| 2360 | _Trr* operator->() {return &t_;} |
| 2361 | _LIBCPP_INLINE_VISIBILITY |
| 2362 | explicit __rv(_Trr& __t) : t_(__t) {} |
| 2363 | }; |
| 2364 | |
| 2365 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 2366 | |
| 2367 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 2368 | |
| 2369 | template <class _Tp> |
| 2370 | inline _LIBCPP_INLINE_VISIBILITY |
| 2371 | typename decay<_Tp>::type |
| 2372 | __decay_copy(_Tp&& __t) |
| 2373 | { |
| 2374 | return _VSTD::forward<_Tp>(__t); |
| 2375 | } |
| 2376 | |
| 2377 | #else |
| 2378 | |
| 2379 | template <class _Tp> |
| 2380 | inline _LIBCPP_INLINE_VISIBILITY |
| 2381 | typename decay<_Tp>::type |
| 2382 | __decay_copy(const _Tp& __t) |
| 2383 | { |
| 2384 | return _VSTD::forward<_Tp>(__t); |
| 2385 | } |
| 2386 | |
| 2387 | #endif |
| 2388 | |
| 2389 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
| 2390 | |
| 2391 | template <class _Rp, class _Class, class ..._Param> |
| 2392 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...), true, false> |
| 2393 | { |
| 2394 | typedef _Class _ClassType; |
| 2395 | typedef _Rp _ReturnType; |
| 2396 | typedef _Rp (_FnType) (_Param...); |
| 2397 | }; |
| 2398 | |
| 2399 | template <class _Rp, class _Class, class ..._Param> |
| 2400 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...), true, false> |
| 2401 | { |
| 2402 | typedef _Class _ClassType; |
| 2403 | typedef _Rp _ReturnType; |
| 2404 | typedef _Rp (_FnType) (_Param..., ...); |
| 2405 | }; |
| 2406 | |
| 2407 | template <class _Rp, class _Class, class ..._Param> |
| 2408 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const, true, false> |
| 2409 | { |
| 2410 | typedef _Class const _ClassType; |
| 2411 | typedef _Rp _ReturnType; |
| 2412 | typedef _Rp (_FnType) (_Param...); |
| 2413 | }; |
| 2414 | |
| 2415 | template <class _Rp, class _Class, class ..._Param> |
| 2416 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const, true, false> |
| 2417 | { |
| 2418 | typedef _Class const _ClassType; |
| 2419 | typedef _Rp _ReturnType; |
| 2420 | typedef _Rp (_FnType) (_Param..., ...); |
| 2421 | }; |
| 2422 | |
| 2423 | template <class _Rp, class _Class, class ..._Param> |
| 2424 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile, true, false> |
| 2425 | { |
| 2426 | typedef _Class volatile _ClassType; |
| 2427 | typedef _Rp _ReturnType; |
| 2428 | typedef _Rp (_FnType) (_Param...); |
| 2429 | }; |
| 2430 | |
| 2431 | template <class _Rp, class _Class, class ..._Param> |
| 2432 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile, true, false> |
| 2433 | { |
| 2434 | typedef _Class volatile _ClassType; |
| 2435 | typedef _Rp _ReturnType; |
| 2436 | typedef _Rp (_FnType) (_Param..., ...); |
| 2437 | }; |
| 2438 | |
| 2439 | template <class _Rp, class _Class, class ..._Param> |
| 2440 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile, true, false> |
| 2441 | { |
| 2442 | typedef _Class const volatile _ClassType; |
| 2443 | typedef _Rp _ReturnType; |
| 2444 | typedef _Rp (_FnType) (_Param...); |
| 2445 | }; |
| 2446 | |
| 2447 | template <class _Rp, class _Class, class ..._Param> |
| 2448 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile, true, false> |
| 2449 | { |
| 2450 | typedef _Class const volatile _ClassType; |
| 2451 | typedef _Rp _ReturnType; |
| 2452 | typedef _Rp (_FnType) (_Param..., ...); |
| 2453 | }; |
| 2454 | |
| 2455 | #if __has_feature(cxx_reference_qualified_functions) || \ |
| 2456 | (defined(_GNUC_VER) && _GNUC_VER >= 409) |
| 2457 | |
| 2458 | template <class _Rp, class _Class, class ..._Param> |
| 2459 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &, true, false> |
| 2460 | { |
| 2461 | typedef _Class& _ClassType; |
| 2462 | typedef _Rp _ReturnType; |
| 2463 | typedef _Rp (_FnType) (_Param...); |
| 2464 | }; |
| 2465 | |
| 2466 | template <class _Rp, class _Class, class ..._Param> |
| 2467 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &, true, false> |
| 2468 | { |
| 2469 | typedef _Class& _ClassType; |
| 2470 | typedef _Rp _ReturnType; |
| 2471 | typedef _Rp (_FnType) (_Param..., ...); |
| 2472 | }; |
| 2473 | |
| 2474 | template <class _Rp, class _Class, class ..._Param> |
| 2475 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&, true, false> |
| 2476 | { |
| 2477 | typedef _Class const& _ClassType; |
| 2478 | typedef _Rp _ReturnType; |
| 2479 | typedef _Rp (_FnType) (_Param...); |
| 2480 | }; |
| 2481 | |
| 2482 | template <class _Rp, class _Class, class ..._Param> |
| 2483 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&, true, false> |
| 2484 | { |
| 2485 | typedef _Class const& _ClassType; |
| 2486 | typedef _Rp _ReturnType; |
| 2487 | typedef _Rp (_FnType) (_Param..., ...); |
| 2488 | }; |
| 2489 | |
| 2490 | template <class _Rp, class _Class, class ..._Param> |
| 2491 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&, true, false> |
| 2492 | { |
| 2493 | typedef _Class volatile& _ClassType; |
| 2494 | typedef _Rp _ReturnType; |
| 2495 | typedef _Rp (_FnType) (_Param...); |
| 2496 | }; |
| 2497 | |
| 2498 | template <class _Rp, class _Class, class ..._Param> |
| 2499 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&, true, false> |
| 2500 | { |
| 2501 | typedef _Class volatile& _ClassType; |
| 2502 | typedef _Rp _ReturnType; |
| 2503 | typedef _Rp (_FnType) (_Param..., ...); |
| 2504 | }; |
| 2505 | |
| 2506 | template <class _Rp, class _Class, class ..._Param> |
| 2507 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&, true, false> |
| 2508 | { |
| 2509 | typedef _Class const volatile& _ClassType; |
| 2510 | typedef _Rp _ReturnType; |
| 2511 | typedef _Rp (_FnType) (_Param...); |
| 2512 | }; |
| 2513 | |
| 2514 | template <class _Rp, class _Class, class ..._Param> |
| 2515 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&, true, false> |
| 2516 | { |
| 2517 | typedef _Class const volatile& _ClassType; |
| 2518 | typedef _Rp _ReturnType; |
| 2519 | typedef _Rp (_FnType) (_Param..., ...); |
| 2520 | }; |
| 2521 | |
| 2522 | template <class _Rp, class _Class, class ..._Param> |
| 2523 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) &&, true, false> |
| 2524 | { |
| 2525 | typedef _Class&& _ClassType; |
| 2526 | typedef _Rp _ReturnType; |
| 2527 | typedef _Rp (_FnType) (_Param...); |
| 2528 | }; |
| 2529 | |
| 2530 | template <class _Rp, class _Class, class ..._Param> |
| 2531 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) &&, true, false> |
| 2532 | { |
| 2533 | typedef _Class&& _ClassType; |
| 2534 | typedef _Rp _ReturnType; |
| 2535 | typedef _Rp (_FnType) (_Param..., ...); |
| 2536 | }; |
| 2537 | |
| 2538 | template <class _Rp, class _Class, class ..._Param> |
| 2539 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const&&, true, false> |
| 2540 | { |
| 2541 | typedef _Class const&& _ClassType; |
| 2542 | typedef _Rp _ReturnType; |
| 2543 | typedef _Rp (_FnType) (_Param...); |
| 2544 | }; |
| 2545 | |
| 2546 | template <class _Rp, class _Class, class ..._Param> |
| 2547 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const&&, true, false> |
| 2548 | { |
| 2549 | typedef _Class const&& _ClassType; |
| 2550 | typedef _Rp _ReturnType; |
| 2551 | typedef _Rp (_FnType) (_Param..., ...); |
| 2552 | }; |
| 2553 | |
| 2554 | template <class _Rp, class _Class, class ..._Param> |
| 2555 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) volatile&&, true, false> |
| 2556 | { |
| 2557 | typedef _Class volatile&& _ClassType; |
| 2558 | typedef _Rp _ReturnType; |
| 2559 | typedef _Rp (_FnType) (_Param...); |
| 2560 | }; |
| 2561 | |
| 2562 | template <class _Rp, class _Class, class ..._Param> |
| 2563 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) volatile&&, true, false> |
| 2564 | { |
| 2565 | typedef _Class volatile&& _ClassType; |
| 2566 | typedef _Rp _ReturnType; |
| 2567 | typedef _Rp (_FnType) (_Param..., ...); |
| 2568 | }; |
| 2569 | |
| 2570 | template <class _Rp, class _Class, class ..._Param> |
| 2571 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param...) const volatile&&, true, false> |
| 2572 | { |
| 2573 | typedef _Class const volatile&& _ClassType; |
| 2574 | typedef _Rp _ReturnType; |
| 2575 | typedef _Rp (_FnType) (_Param...); |
| 2576 | }; |
| 2577 | |
| 2578 | template <class _Rp, class _Class, class ..._Param> |
| 2579 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_Param..., ...) const volatile&&, true, false> |
| 2580 | { |
| 2581 | typedef _Class const volatile&& _ClassType; |
| 2582 | typedef _Rp _ReturnType; |
| 2583 | typedef _Rp (_FnType) (_Param..., ...); |
| 2584 | }; |
| 2585 | |
| 2586 | #endif // __has_feature(cxx_reference_qualified_functions) || _GNUC_VER >= 409 |
| 2587 | |
| 2588 | #else // _LIBCPP_HAS_NO_VARIADICS |
| 2589 | |
| 2590 | template <class _Rp, class _Class> |
| 2591 | struct __member_pointer_traits_imp<_Rp (_Class::*)(), true, false> |
| 2592 | { |
| 2593 | typedef _Class _ClassType; |
| 2594 | typedef _Rp _ReturnType; |
| 2595 | typedef _Rp (_FnType) (); |
| 2596 | }; |
| 2597 | |
| 2598 | template <class _Rp, class _Class> |
| 2599 | struct __member_pointer_traits_imp<_Rp (_Class::*)(...), true, false> |
| 2600 | { |
| 2601 | typedef _Class _ClassType; |
| 2602 | typedef _Rp _ReturnType; |
| 2603 | typedef _Rp (_FnType) (...); |
| 2604 | }; |
| 2605 | |
| 2606 | template <class _Rp, class _Class, class _P0> |
| 2607 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0), true, false> |
| 2608 | { |
| 2609 | typedef _Class _ClassType; |
| 2610 | typedef _Rp _ReturnType; |
| 2611 | typedef _Rp (_FnType) (_P0); |
| 2612 | }; |
| 2613 | |
| 2614 | template <class _Rp, class _Class, class _P0> |
| 2615 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, ...), true, false> |
| 2616 | { |
| 2617 | typedef _Class _ClassType; |
| 2618 | typedef _Rp _ReturnType; |
| 2619 | typedef _Rp (_FnType) (_P0, ...); |
| 2620 | }; |
| 2621 | |
| 2622 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2623 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1), true, false> |
| 2624 | { |
| 2625 | typedef _Class _ClassType; |
| 2626 | typedef _Rp _ReturnType; |
| 2627 | typedef _Rp (_FnType) (_P0, _P1); |
| 2628 | }; |
| 2629 | |
| 2630 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2631 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, ...), true, false> |
| 2632 | { |
| 2633 | typedef _Class _ClassType; |
| 2634 | typedef _Rp _ReturnType; |
| 2635 | typedef _Rp (_FnType) (_P0, _P1, ...); |
| 2636 | }; |
| 2637 | |
| 2638 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2639 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2), true, false> |
| 2640 | { |
| 2641 | typedef _Class _ClassType; |
| 2642 | typedef _Rp _ReturnType; |
| 2643 | typedef _Rp (_FnType) (_P0, _P1, _P2); |
| 2644 | }; |
| 2645 | |
| 2646 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2647 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2, ...), true, false> |
| 2648 | { |
| 2649 | typedef _Class _ClassType; |
| 2650 | typedef _Rp _ReturnType; |
| 2651 | typedef _Rp (_FnType) (_P0, _P1, _P2, ...); |
| 2652 | }; |
| 2653 | |
| 2654 | template <class _Rp, class _Class> |
| 2655 | struct __member_pointer_traits_imp<_Rp (_Class::*)() const, true, false> |
| 2656 | { |
| 2657 | typedef _Class const _ClassType; |
| 2658 | typedef _Rp _ReturnType; |
| 2659 | typedef _Rp (_FnType) (); |
| 2660 | }; |
| 2661 | |
| 2662 | template <class _Rp, class _Class> |
| 2663 | struct __member_pointer_traits_imp<_Rp (_Class::*)(...) const, true, false> |
| 2664 | { |
| 2665 | typedef _Class const _ClassType; |
| 2666 | typedef _Rp _ReturnType; |
| 2667 | typedef _Rp (_FnType) (...); |
| 2668 | }; |
| 2669 | |
| 2670 | template <class _Rp, class _Class, class _P0> |
| 2671 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0) const, true, false> |
| 2672 | { |
| 2673 | typedef _Class const _ClassType; |
| 2674 | typedef _Rp _ReturnType; |
| 2675 | typedef _Rp (_FnType) (_P0); |
| 2676 | }; |
| 2677 | |
| 2678 | template <class _Rp, class _Class, class _P0> |
| 2679 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, ...) const, true, false> |
| 2680 | { |
| 2681 | typedef _Class const _ClassType; |
| 2682 | typedef _Rp _ReturnType; |
| 2683 | typedef _Rp (_FnType) (_P0, ...); |
| 2684 | }; |
| 2685 | |
| 2686 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2687 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1) const, true, false> |
| 2688 | { |
| 2689 | typedef _Class const _ClassType; |
| 2690 | typedef _Rp _ReturnType; |
| 2691 | typedef _Rp (_FnType) (_P0, _P1); |
| 2692 | }; |
| 2693 | |
| 2694 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2695 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, ...) const, true, false> |
| 2696 | { |
| 2697 | typedef _Class const _ClassType; |
| 2698 | typedef _Rp _ReturnType; |
| 2699 | typedef _Rp (_FnType) (_P0, _P1, ...); |
| 2700 | }; |
| 2701 | |
| 2702 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2703 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2) const, true, false> |
| 2704 | { |
| 2705 | typedef _Class const _ClassType; |
| 2706 | typedef _Rp _ReturnType; |
| 2707 | typedef _Rp (_FnType) (_P0, _P1, _P2); |
| 2708 | }; |
| 2709 | |
| 2710 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2711 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2, ...) const, true, false> |
| 2712 | { |
| 2713 | typedef _Class const _ClassType; |
| 2714 | typedef _Rp _ReturnType; |
| 2715 | typedef _Rp (_FnType) (_P0, _P1, _P2, ...); |
| 2716 | }; |
| 2717 | |
| 2718 | template <class _Rp, class _Class> |
| 2719 | struct __member_pointer_traits_imp<_Rp (_Class::*)() volatile, true, false> |
| 2720 | { |
| 2721 | typedef _Class volatile _ClassType; |
| 2722 | typedef _Rp _ReturnType; |
| 2723 | typedef _Rp (_FnType) (); |
| 2724 | }; |
| 2725 | |
| 2726 | template <class _Rp, class _Class> |
| 2727 | struct __member_pointer_traits_imp<_Rp (_Class::*)(...) volatile, true, false> |
| 2728 | { |
| 2729 | typedef _Class volatile _ClassType; |
| 2730 | typedef _Rp _ReturnType; |
| 2731 | typedef _Rp (_FnType) (...); |
| 2732 | }; |
| 2733 | |
| 2734 | template <class _Rp, class _Class, class _P0> |
| 2735 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0) volatile, true, false> |
| 2736 | { |
| 2737 | typedef _Class volatile _ClassType; |
| 2738 | typedef _Rp _ReturnType; |
| 2739 | typedef _Rp (_FnType) (_P0); |
| 2740 | }; |
| 2741 | |
| 2742 | template <class _Rp, class _Class, class _P0> |
| 2743 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, ...) volatile, true, false> |
| 2744 | { |
| 2745 | typedef _Class volatile _ClassType; |
| 2746 | typedef _Rp _ReturnType; |
| 2747 | typedef _Rp (_FnType) (_P0, ...); |
| 2748 | }; |
| 2749 | |
| 2750 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2751 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1) volatile, true, false> |
| 2752 | { |
| 2753 | typedef _Class volatile _ClassType; |
| 2754 | typedef _Rp _ReturnType; |
| 2755 | typedef _Rp (_FnType) (_P0, _P1); |
| 2756 | }; |
| 2757 | |
| 2758 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2759 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, ...) volatile, true, false> |
| 2760 | { |
| 2761 | typedef _Class volatile _ClassType; |
| 2762 | typedef _Rp _ReturnType; |
| 2763 | typedef _Rp (_FnType) (_P0, _P1, ...); |
| 2764 | }; |
| 2765 | |
| 2766 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2767 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2) volatile, true, false> |
| 2768 | { |
| 2769 | typedef _Class volatile _ClassType; |
| 2770 | typedef _Rp _ReturnType; |
| 2771 | typedef _Rp (_FnType) (_P0, _P1, _P2); |
| 2772 | }; |
| 2773 | |
| 2774 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2775 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2, ...) volatile, true, false> |
| 2776 | { |
| 2777 | typedef _Class volatile _ClassType; |
| 2778 | typedef _Rp _ReturnType; |
| 2779 | typedef _Rp (_FnType) (_P0, _P1, _P2, ...); |
| 2780 | }; |
| 2781 | |
| 2782 | template <class _Rp, class _Class> |
| 2783 | struct __member_pointer_traits_imp<_Rp (_Class::*)() const volatile, true, false> |
| 2784 | { |
| 2785 | typedef _Class const volatile _ClassType; |
| 2786 | typedef _Rp _ReturnType; |
| 2787 | typedef _Rp (_FnType) (); |
| 2788 | }; |
| 2789 | |
| 2790 | template <class _Rp, class _Class> |
| 2791 | struct __member_pointer_traits_imp<_Rp (_Class::*)(...) const volatile, true, false> |
| 2792 | { |
| 2793 | typedef _Class const volatile _ClassType; |
| 2794 | typedef _Rp _ReturnType; |
| 2795 | typedef _Rp (_FnType) (...); |
| 2796 | }; |
| 2797 | |
| 2798 | template <class _Rp, class _Class, class _P0> |
| 2799 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0) const volatile, true, false> |
| 2800 | { |
| 2801 | typedef _Class const volatile _ClassType; |
| 2802 | typedef _Rp _ReturnType; |
| 2803 | typedef _Rp (_FnType) (_P0); |
| 2804 | }; |
| 2805 | |
| 2806 | template <class _Rp, class _Class, class _P0> |
| 2807 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, ...) const volatile, true, false> |
| 2808 | { |
| 2809 | typedef _Class const volatile _ClassType; |
| 2810 | typedef _Rp _ReturnType; |
| 2811 | typedef _Rp (_FnType) (_P0, ...); |
| 2812 | }; |
| 2813 | |
| 2814 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2815 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1) const volatile, true, false> |
| 2816 | { |
| 2817 | typedef _Class const volatile _ClassType; |
| 2818 | typedef _Rp _ReturnType; |
| 2819 | typedef _Rp (_FnType) (_P0, _P1); |
| 2820 | }; |
| 2821 | |
| 2822 | template <class _Rp, class _Class, class _P0, class _P1> |
| 2823 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, ...) const volatile, true, false> |
| 2824 | { |
| 2825 | typedef _Class const volatile _ClassType; |
| 2826 | typedef _Rp _ReturnType; |
| 2827 | typedef _Rp (_FnType) (_P0, _P1, ...); |
| 2828 | }; |
| 2829 | |
| 2830 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2831 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2) const volatile, true, false> |
| 2832 | { |
| 2833 | typedef _Class const volatile _ClassType; |
| 2834 | typedef _Rp _ReturnType; |
| 2835 | typedef _Rp (_FnType) (_P0, _P1, _P2); |
| 2836 | }; |
| 2837 | |
| 2838 | template <class _Rp, class _Class, class _P0, class _P1, class _P2> |
| 2839 | struct __member_pointer_traits_imp<_Rp (_Class::*)(_P0, _P1, _P2, ...) const volatile, true, false> |
| 2840 | { |
| 2841 | typedef _Class const volatile _ClassType; |
| 2842 | typedef _Rp _ReturnType; |
| 2843 | typedef _Rp (_FnType) (_P0, _P1, _P2, ...); |
| 2844 | }; |
| 2845 | |
| 2846 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 2847 | |
| 2848 | template <class _Rp, class _Class> |
| 2849 | struct __member_pointer_traits_imp<_Rp _Class::*, false, true> |
| 2850 | { |
| 2851 | typedef _Class _ClassType; |
| 2852 | typedef _Rp _ReturnType; |
| 2853 | }; |
| 2854 | |
| 2855 | template <class _MP> |
| 2856 | struct __member_pointer_traits |
| 2857 | : public __member_pointer_traits_imp<typename remove_cv<_MP>::type, |
| 2858 | is_member_function_pointer<_MP>::value, |
| 2859 | is_member_object_pointer<_MP>::value> |
| 2860 | { |
| 2861 | // typedef ... _ClassType; |
| 2862 | // typedef ... _ReturnType; |
| 2863 | // typedef ... _FnType; |
| 2864 | }; |
| 2865 | |
| 2866 | |
| 2867 | template <class _DecayedFp> |
| 2868 | struct __member_pointer_class_type {}; |
| 2869 | |
| 2870 | template <class _Ret, class _ClassType> |
| 2871 | struct __member_pointer_class_type<_Ret _ClassType::*> { |
| 2872 | typedef _ClassType type; |
| 2873 | }; |
| 2874 | |
| 2875 | // result_of |
| 2876 | |
| 2877 | template <class _Callable> class result_of; |
| 2878 | |
| 2879 | #ifdef _LIBCPP_HAS_NO_VARIADICS |
| 2880 | |
| 2881 | template <class _Fn, bool, bool> |
| 2882 | class __result_of |
| 2883 | { |
| 2884 | }; |
| 2885 | |
| 2886 | template <class _Fn> |
| 2887 | class __result_of<_Fn(), true, false> |
| 2888 | { |
| 2889 | public: |
| 2890 | typedef decltype(declval<_Fn>()()) type; |
| 2891 | }; |
| 2892 | |
| 2893 | template <class _Fn, class _A0> |
| 2894 | class __result_of<_Fn(_A0), true, false> |
| 2895 | { |
| 2896 | public: |
| 2897 | typedef decltype(declval<_Fn>()(declval<_A0>())) type; |
| 2898 | }; |
| 2899 | |
| 2900 | template <class _Fn, class _A0, class _A1> |
| 2901 | class __result_of<_Fn(_A0, _A1), true, false> |
| 2902 | { |
| 2903 | public: |
| 2904 | typedef decltype(declval<_Fn>()(declval<_A0>(), declval<_A1>())) type; |
| 2905 | }; |
| 2906 | |
| 2907 | template <class _Fn, class _A0, class _A1, class _A2> |
| 2908 | class __result_of<_Fn(_A0, _A1, _A2), true, false> |
| 2909 | { |
| 2910 | public: |
| 2911 | typedef decltype(declval<_Fn>()(declval<_A0>(), declval<_A1>(), declval<_A2>())) type; |
| 2912 | }; |
| 2913 | |
| 2914 | template <class _MP, class _Tp, bool _IsMemberFunctionPtr> |
| 2915 | struct __result_of_mp; |
| 2916 | |
| 2917 | // member function pointer |
| 2918 | |
| 2919 | template <class _MP, class _Tp> |
| 2920 | struct __result_of_mp<_MP, _Tp, true> |
| 2921 | : public __identity<typename __member_pointer_traits<_MP>::_ReturnType> |
| 2922 | { |
| 2923 | }; |
| 2924 | |
| 2925 | // member data pointer |
| 2926 | |
| 2927 | template <class _MP, class _Tp, bool> |
| 2928 | struct __result_of_mdp; |
| 2929 | |
| 2930 | template <class _Rp, class _Class, class _Tp> |
| 2931 | struct __result_of_mdp<_Rp _Class::*, _Tp, false> |
| 2932 | { |
| 2933 | typedef typename __apply_cv<decltype(*_VSTD::declval<_Tp>()), _Rp>::type& type; |
| 2934 | }; |
| 2935 | |
| 2936 | template <class _Rp, class _Class, class _Tp> |
| 2937 | struct __result_of_mdp<_Rp _Class::*, _Tp, true> |
| 2938 | { |
| 2939 | typedef typename __apply_cv<_Tp, _Rp>::type& type; |
| 2940 | }; |
| 2941 | |
| 2942 | template <class _Rp, class _Class, class _Tp> |
| 2943 | struct __result_of_mp<_Rp _Class::*, _Tp, false> |
| 2944 | : public __result_of_mdp<_Rp _Class::*, _Tp, |
| 2945 | is_base_of<_Class, typename remove_reference<_Tp>::type>::value> |
| 2946 | { |
| 2947 | }; |
| 2948 | |
| 2949 | |
| 2950 | |
| 2951 | template <class _Fn, class _Tp> |
| 2952 | class __result_of<_Fn(_Tp), false, true> // _Fn must be member pointer |
| 2953 | : public __result_of_mp<typename remove_reference<_Fn>::type, |
| 2954 | _Tp, |
| 2955 | is_member_function_pointer<typename remove_reference<_Fn>::type>::value> |
| 2956 | { |
| 2957 | }; |
| 2958 | |
| 2959 | template <class _Fn, class _Tp, class _A0> |
| 2960 | class __result_of<_Fn(_Tp, _A0), false, true> // _Fn must be member pointer |
| 2961 | : public __result_of_mp<typename remove_reference<_Fn>::type, |
| 2962 | _Tp, |
| 2963 | is_member_function_pointer<typename remove_reference<_Fn>::type>::value> |
| 2964 | { |
| 2965 | }; |
| 2966 | |
| 2967 | template <class _Fn, class _Tp, class _A0, class _A1> |
| 2968 | class __result_of<_Fn(_Tp, _A0, _A1), false, true> // _Fn must be member pointer |
| 2969 | : public __result_of_mp<typename remove_reference<_Fn>::type, |
| 2970 | _Tp, |
| 2971 | is_member_function_pointer<typename remove_reference<_Fn>::type>::value> |
| 2972 | { |
| 2973 | }; |
| 2974 | |
| 2975 | template <class _Fn, class _Tp, class _A0, class _A1, class _A2> |
| 2976 | class __result_of<_Fn(_Tp, _A0, _A1, _A2), false, true> // _Fn must be member pointer |
| 2977 | : public __result_of_mp<typename remove_reference<_Fn>::type, |
| 2978 | _Tp, |
| 2979 | is_member_function_pointer<typename remove_reference<_Fn>::type>::value> |
| 2980 | { |
| 2981 | }; |
| 2982 | |
| 2983 | // result_of |
| 2984 | |
| 2985 | template <class _Fn> |
| 2986 | class _LIBCPP_TEMPLATE_VIS result_of<_Fn()> |
| 2987 | : public __result_of<_Fn(), |
| 2988 | is_class<typename remove_reference<_Fn>::type>::value || |
| 2989 | is_function<typename remove_pointer<typename remove_reference<_Fn>::type>::type>::value, |
| 2990 | is_member_pointer<typename remove_reference<_Fn>::type>::value |
| 2991 | > |
| 2992 | { |
| 2993 | }; |
| 2994 | |
| 2995 | template <class _Fn, class _A0> |
| 2996 | class _LIBCPP_TEMPLATE_VIS result_of<_Fn(_A0)> |
| 2997 | : public __result_of<_Fn(_A0), |
| 2998 | is_class<typename remove_reference<_Fn>::type>::value || |
| 2999 | is_function<typename remove_pointer<typename remove_reference<_Fn>::type>::type>::value, |
| 3000 | is_member_pointer<typename remove_reference<_Fn>::type>::value |
| 3001 | > |
| 3002 | { |
| 3003 | }; |
| 3004 | |
| 3005 | template <class _Fn, class _A0, class _A1> |
| 3006 | class _LIBCPP_TEMPLATE_VIS result_of<_Fn(_A0, _A1)> |
| 3007 | : public __result_of<_Fn(_A0, _A1), |
| 3008 | is_class<typename remove_reference<_Fn>::type>::value || |
| 3009 | is_function<typename remove_pointer<typename remove_reference<_Fn>::type>::type>::value, |
| 3010 | is_member_pointer<typename remove_reference<_Fn>::type>::value |
| 3011 | > |
| 3012 | { |
| 3013 | }; |
| 3014 | |
| 3015 | template <class _Fn, class _A0, class _A1, class _A2> |
| 3016 | class _LIBCPP_TEMPLATE_VIS result_of<_Fn(_A0, _A1, _A2)> |
| 3017 | : public __result_of<_Fn(_A0, _A1, _A2), |
| 3018 | is_class<typename remove_reference<_Fn>::type>::value || |
| 3019 | is_function<typename remove_pointer<typename remove_reference<_Fn>::type>::type>::value, |
| 3020 | is_member_pointer<typename remove_reference<_Fn>::type>::value |
| 3021 | > |
| 3022 | { |
| 3023 | }; |
| 3024 | |
| 3025 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 3026 | |
| 3027 | // template <class T, class... Args> struct is_constructible; |
| 3028 | |
| 3029 | namespace __is_construct |
| 3030 | { |
| 3031 | struct __nat {}; |
| 3032 | } |
| 3033 | |
| 3034 | #if !defined(_LIBCPP_CXX03_LANG) && (!__has_feature(is_constructible) || \ |
| 3035 | defined(_LIBCPP_TESTING_FALLBACK_IS_CONSTRUCTIBLE)) |
| 3036 | |
| 3037 | template <class _Tp, class... _Args> |
| 3038 | struct __libcpp_is_constructible; |
| 3039 | |
| 3040 | template <class _To, class _From> |
| 3041 | struct __is_invalid_base_to_derived_cast { |
| 3042 | static_assert(is_reference<_To>::value, "Wrong specialization"); |
| 3043 | using _RawFrom = __uncvref_t<_From>; |
| 3044 | using _RawTo = __uncvref_t<_To>; |
| 3045 | static const bool value = __lazy_and< |
| 3046 | __lazy_not<is_same<_RawFrom, _RawTo>>, |
| 3047 | is_base_of<_RawFrom, _RawTo>, |
| 3048 | __lazy_not<__libcpp_is_constructible<_RawTo, _From>> |
| 3049 | >::value; |
| 3050 | }; |
| 3051 | |
| 3052 | template <class _To, class _From> |
| 3053 | struct __is_invalid_lvalue_to_rvalue_cast : false_type { |
| 3054 | static_assert(is_reference<_To>::value, "Wrong specialization"); |
| 3055 | }; |
| 3056 | |
| 3057 | template <class _ToRef, class _FromRef> |
| 3058 | struct __is_invalid_lvalue_to_rvalue_cast<_ToRef&&, _FromRef&> { |
| 3059 | using _RawFrom = __uncvref_t<_FromRef>; |
| 3060 | using _RawTo = __uncvref_t<_ToRef>; |
| 3061 | static const bool value = __lazy_and< |
| 3062 | __lazy_not<is_function<_RawTo>>, |
| 3063 | __lazy_or< |
| 3064 | is_same<_RawFrom, _RawTo>, |
| 3065 | is_base_of<_RawTo, _RawFrom>> |
| 3066 | >::value; |
| 3067 | }; |
| 3068 | |
| 3069 | struct __is_constructible_helper |
| 3070 | { |
| 3071 | template <class _To> |
| 3072 | static void __eat(_To); |
| 3073 | |
| 3074 | // This overload is needed to work around a Clang bug that disallows |
| 3075 | // static_cast<T&&>(e) for non-reference-compatible types. |
| 3076 | // Example: static_cast<int&&>(declval<double>()); |
| 3077 | // NOTE: The static_cast implementation below is required to support |
| 3078 | // classes with explicit conversion operators. |
| 3079 | template <class _To, class _From, |
| 3080 | class = decltype(__eat<_To>(_VSTD::declval<_From>()))> |
| 3081 | static true_type __test_cast(int); |
| 3082 | |
| 3083 | template <class _To, class _From, |
| 3084 | class = decltype(static_cast<_To>(_VSTD::declval<_From>()))> |
| 3085 | static integral_constant<bool, |
| 3086 | !__is_invalid_base_to_derived_cast<_To, _From>::value && |
| 3087 | !__is_invalid_lvalue_to_rvalue_cast<_To, _From>::value |
| 3088 | > __test_cast(long); |
| 3089 | |
| 3090 | template <class, class> |
| 3091 | static false_type __test_cast(...); |
| 3092 | |
| 3093 | template <class _Tp, class ..._Args, |
| 3094 | class = decltype(_Tp(_VSTD::declval<_Args>()...))> |
| 3095 | static true_type __test_nary(int); |
| 3096 | template <class _Tp, class...> |
| 3097 | static false_type __test_nary(...); |
| 3098 | |
| 3099 | template <class _Tp, class _A0, class = decltype(::new _Tp(_VSTD::declval<_A0>()))> |
| 3100 | static is_destructible<_Tp> __test_unary(int); |
| 3101 | template <class, class> |
| 3102 | static false_type __test_unary(...); |
| 3103 | }; |
| 3104 | |
| 3105 | template <class _Tp, bool = is_void<_Tp>::value> |
| 3106 | struct __is_default_constructible |
| 3107 | : decltype(__is_constructible_helper::__test_nary<_Tp>(0)) |
| 3108 | {}; |
| 3109 | |
| 3110 | template <class _Tp> |
| 3111 | struct __is_default_constructible<_Tp, true> : false_type {}; |
| 3112 | |
| 3113 | template <class _Tp> |
| 3114 | struct __is_default_constructible<_Tp[], false> : false_type {}; |
| 3115 | |
| 3116 | template <class _Tp, size_t _Nx> |
| 3117 | struct __is_default_constructible<_Tp[_Nx], false> |
| 3118 | : __is_default_constructible<typename remove_all_extents<_Tp>::type> {}; |
| 3119 | |
| 3120 | template <class _Tp, class... _Args> |
| 3121 | struct __libcpp_is_constructible |
| 3122 | { |
| 3123 | static_assert(sizeof...(_Args) > 1, "Wrong specialization"); |
| 3124 | typedef decltype(__is_constructible_helper::__test_nary<_Tp, _Args...>(0)) |
| 3125 | type; |
| 3126 | }; |
| 3127 | |
| 3128 | template <class _Tp> |
| 3129 | struct __libcpp_is_constructible<_Tp> : __is_default_constructible<_Tp> {}; |
| 3130 | |
| 3131 | template <class _Tp, class _A0> |
| 3132 | struct __libcpp_is_constructible<_Tp, _A0> |
| 3133 | : public decltype(__is_constructible_helper::__test_unary<_Tp, _A0>(0)) |
| 3134 | {}; |
| 3135 | |
| 3136 | template <class _Tp, class _A0> |
| 3137 | struct __libcpp_is_constructible<_Tp&, _A0> |
| 3138 | : public decltype(__is_constructible_helper:: |
| 3139 | __test_cast<_Tp&, _A0>(0)) |
| 3140 | {}; |
| 3141 | |
| 3142 | template <class _Tp, class _A0> |
| 3143 | struct __libcpp_is_constructible<_Tp&&, _A0> |
| 3144 | : public decltype(__is_constructible_helper:: |
| 3145 | __test_cast<_Tp&&, _A0>(0)) |
| 3146 | {}; |
| 3147 | |
| 3148 | #endif |
| 3149 | |
| 3150 | #if __has_feature(is_constructible) |
| 3151 | template <class _Tp, class ..._Args> |
| 3152 | struct _LIBCPP_TEMPLATE_VIS is_constructible |
| 3153 | : public integral_constant<bool, __is_constructible(_Tp, _Args...)> |
| 3154 | {}; |
| 3155 | #elif !defined(_LIBCPP_CXX03_LANG) |
| 3156 | template <class _Tp, class... _Args> |
| 3157 | struct _LIBCPP_TEMPLATE_VIS is_constructible |
| 3158 | : public __libcpp_is_constructible<_Tp, _Args...>::type {}; |
| 3159 | #else |
| 3160 | // template <class T> struct is_constructible0; |
| 3161 | |
| 3162 | // main is_constructible0 test |
| 3163 | |
| 3164 | template <class _Tp> |
| 3165 | decltype((_Tp(), true_type())) |
| 3166 | __is_constructible0_test(_Tp&); |
| 3167 | |
| 3168 | false_type |
| 3169 | __is_constructible0_test(__any); |
| 3170 | |
| 3171 | template <class _Tp, class _A0> |
| 3172 | decltype((_Tp(_VSTD::declval<_A0>()), true_type())) |
| 3173 | __is_constructible1_test(_Tp&, _A0&); |
| 3174 | |
| 3175 | template <class _A0> |
| 3176 | false_type |
| 3177 | __is_constructible1_test(__any, _A0&); |
| 3178 | |
| 3179 | template <class _Tp, class _A0, class _A1> |
| 3180 | decltype((_Tp(_VSTD::declval<_A0>(), _VSTD::declval<_A1>()), true_type())) |
| 3181 | __is_constructible2_test(_Tp&, _A0&, _A1&); |
| 3182 | |
| 3183 | template <class _A0, class _A1> |
| 3184 | false_type |
| 3185 | __is_constructible2_test(__any, _A0&, _A1&); |
| 3186 | |
| 3187 | template <class _Tp, class _A0, class _A1, class _A2> |
| 3188 | decltype((_Tp(_VSTD::declval<_A0>(), _VSTD::declval<_A1>(), _VSTD::declval<_A2>()), true_type())) |
| 3189 | __is_constructible3_test(_Tp&, _A0&, _A1&, _A2&); |
| 3190 | |
| 3191 | template <class _A0, class _A1, class _A2> |
| 3192 | false_type |
| 3193 | __is_constructible3_test(__any, _A0&, _A1&, _A2&); |
| 3194 | |
| 3195 | template <bool, class _Tp> |
| 3196 | struct __is_constructible0_imp // false, _Tp is not a scalar |
| 3197 | : public common_type |
| 3198 | < |
| 3199 | decltype(__is_constructible0_test(declval<_Tp&>())) |
| 3200 | >::type |
| 3201 | {}; |
| 3202 | |
| 3203 | template <bool, class _Tp, class _A0> |
| 3204 | struct __is_constructible1_imp // false, _Tp is not a scalar |
| 3205 | : public common_type |
| 3206 | < |
| 3207 | decltype(__is_constructible1_test(declval<_Tp&>(), declval<_A0&>())) |
| 3208 | >::type |
| 3209 | {}; |
| 3210 | |
| 3211 | template <bool, class _Tp, class _A0, class _A1> |
| 3212 | struct __is_constructible2_imp // false, _Tp is not a scalar |
| 3213 | : public common_type |
| 3214 | < |
| 3215 | decltype(__is_constructible2_test(declval<_Tp&>(), declval<_A0>(), declval<_A1>())) |
| 3216 | >::type |
| 3217 | {}; |
| 3218 | |
| 3219 | template <bool, class _Tp, class _A0, class _A1, class _A2> |
| 3220 | struct __is_constructible3_imp // false, _Tp is not a scalar |
| 3221 | : public common_type |
| 3222 | < |
| 3223 | decltype(__is_constructible3_test(declval<_Tp&>(), declval<_A0>(), declval<_A1>(), declval<_A2>())) |
| 3224 | >::type |
| 3225 | {}; |
| 3226 | |
| 3227 | // handle scalars and reference types |
| 3228 | |
| 3229 | // Scalars are default constructible, references are not |
| 3230 | |
| 3231 | template <class _Tp> |
| 3232 | struct __is_constructible0_imp<true, _Tp> |
| 3233 | : public is_scalar<_Tp> |
| 3234 | {}; |
| 3235 | |
| 3236 | template <class _Tp, class _A0> |
| 3237 | struct __is_constructible1_imp<true, _Tp, _A0> |
| 3238 | : public is_convertible<_A0, _Tp> |
| 3239 | {}; |
| 3240 | |
| 3241 | template <class _Tp, class _A0, class _A1> |
| 3242 | struct __is_constructible2_imp<true, _Tp, _A0, _A1> |
| 3243 | : public false_type |
| 3244 | {}; |
| 3245 | |
| 3246 | template <class _Tp, class _A0, class _A1, class _A2> |
| 3247 | struct __is_constructible3_imp<true, _Tp, _A0, _A1, _A2> |
| 3248 | : public false_type |
| 3249 | {}; |
| 3250 | |
| 3251 | // Treat scalars and reference types separately |
| 3252 | |
| 3253 | template <bool, class _Tp> |
| 3254 | struct __is_constructible0_void_check |
| 3255 | : public __is_constructible0_imp<is_scalar<_Tp>::value || is_reference<_Tp>::value, |
| 3256 | _Tp> |
| 3257 | {}; |
| 3258 | |
| 3259 | template <bool, class _Tp, class _A0> |
| 3260 | struct __is_constructible1_void_check |
| 3261 | : public __is_constructible1_imp<is_scalar<_Tp>::value || is_reference<_Tp>::value, |
| 3262 | _Tp, _A0> |
| 3263 | {}; |
| 3264 | |
| 3265 | template <bool, class _Tp, class _A0, class _A1> |
| 3266 | struct __is_constructible2_void_check |
| 3267 | : public __is_constructible2_imp<is_scalar<_Tp>::value || is_reference<_Tp>::value, |
| 3268 | _Tp, _A0, _A1> |
| 3269 | {}; |
| 3270 | |
| 3271 | template <bool, class _Tp, class _A0, class _A1, class _A2> |
| 3272 | struct __is_constructible3_void_check |
| 3273 | : public __is_constructible3_imp<is_scalar<_Tp>::value || is_reference<_Tp>::value, |
| 3274 | _Tp, _A0, _A1, _A2> |
| 3275 | {}; |
| 3276 | |
| 3277 | // If any of T or Args is void, is_constructible should be false |
| 3278 | |
| 3279 | template <class _Tp> |
| 3280 | struct __is_constructible0_void_check<true, _Tp> |
| 3281 | : public false_type |
| 3282 | {}; |
| 3283 | |
| 3284 | template <class _Tp, class _A0> |
| 3285 | struct __is_constructible1_void_check<true, _Tp, _A0> |
| 3286 | : public false_type |
| 3287 | {}; |
| 3288 | |
| 3289 | template <class _Tp, class _A0, class _A1> |
| 3290 | struct __is_constructible2_void_check<true, _Tp, _A0, _A1> |
| 3291 | : public false_type |
| 3292 | {}; |
| 3293 | |
| 3294 | template <class _Tp, class _A0, class _A1, class _A2> |
| 3295 | struct __is_constructible3_void_check<true, _Tp, _A0, _A1, _A2> |
| 3296 | : public false_type |
| 3297 | {}; |
| 3298 | |
| 3299 | // is_constructible entry point |
| 3300 | |
| 3301 | template <class _Tp, class _A0 = __is_construct::__nat, |
| 3302 | class _A1 = __is_construct::__nat, |
| 3303 | class _A2 = __is_construct::__nat> |
| 3304 | struct _LIBCPP_TEMPLATE_VIS is_constructible |
| 3305 | : public __is_constructible3_void_check<is_void<_Tp>::value |
| 3306 | || is_abstract<_Tp>::value |
| 3307 | || is_function<_Tp>::value |
| 3308 | || is_void<_A0>::value |
| 3309 | || is_void<_A1>::value |
| 3310 | || is_void<_A2>::value, |
| 3311 | _Tp, _A0, _A1, _A2> |
| 3312 | {}; |
| 3313 | |
| 3314 | template <class _Tp> |
| 3315 | struct _LIBCPP_TEMPLATE_VIS is_constructible<_Tp, __is_construct::__nat, __is_construct::__nat> |
| 3316 | : public __is_constructible0_void_check<is_void<_Tp>::value |
| 3317 | || is_abstract<_Tp>::value |
| 3318 | || is_function<_Tp>::value, |
| 3319 | _Tp> |
| 3320 | {}; |
| 3321 | |
| 3322 | template <class _Tp, class _A0> |
| 3323 | struct _LIBCPP_TEMPLATE_VIS is_constructible<_Tp, _A0, __is_construct::__nat> |
| 3324 | : public __is_constructible1_void_check<is_void<_Tp>::value |
| 3325 | || is_abstract<_Tp>::value |
| 3326 | || is_function<_Tp>::value |
| 3327 | || is_void<_A0>::value, |
| 3328 | _Tp, _A0> |
| 3329 | {}; |
| 3330 | |
| 3331 | template <class _Tp, class _A0, class _A1> |
| 3332 | struct _LIBCPP_TEMPLATE_VIS is_constructible<_Tp, _A0, _A1, __is_construct::__nat> |
| 3333 | : public __is_constructible2_void_check<is_void<_Tp>::value |
| 3334 | || is_abstract<_Tp>::value |
| 3335 | || is_function<_Tp>::value |
| 3336 | || is_void<_A0>::value |
| 3337 | || is_void<_A1>::value, |
| 3338 | _Tp, _A0, _A1> |
| 3339 | {}; |
| 3340 | |
| 3341 | // Array types are default constructible if their element type |
| 3342 | // is default constructible |
| 3343 | |
| 3344 | template <class _Ap, size_t _Np> |
| 3345 | struct __is_constructible0_imp<false, _Ap[_Np]> |
| 3346 | : public is_constructible<typename remove_all_extents<_Ap>::type> |
| 3347 | {}; |
| 3348 | |
| 3349 | template <class _Ap, size_t _Np, class _A0> |
| 3350 | struct __is_constructible1_imp<false, _Ap[_Np], _A0> |
| 3351 | : public false_type |
| 3352 | {}; |
| 3353 | |
| 3354 | template <class _Ap, size_t _Np, class _A0, class _A1> |
| 3355 | struct __is_constructible2_imp<false, _Ap[_Np], _A0, _A1> |
| 3356 | : public false_type |
| 3357 | {}; |
| 3358 | |
| 3359 | template <class _Ap, size_t _Np, class _A0, class _A1, class _A2> |
| 3360 | struct __is_constructible3_imp<false, _Ap[_Np], _A0, _A1, _A2> |
| 3361 | : public false_type |
| 3362 | {}; |
| 3363 | |
| 3364 | // Incomplete array types are not constructible |
| 3365 | |
| 3366 | template <class _Ap> |
| 3367 | struct __is_constructible0_imp<false, _Ap[]> |
| 3368 | : public false_type |
| 3369 | {}; |
| 3370 | |
| 3371 | template <class _Ap, class _A0> |
| 3372 | struct __is_constructible1_imp<false, _Ap[], _A0> |
| 3373 | : public false_type |
| 3374 | {}; |
| 3375 | |
| 3376 | template <class _Ap, class _A0, class _A1> |
| 3377 | struct __is_constructible2_imp<false, _Ap[], _A0, _A1> |
| 3378 | : public false_type |
| 3379 | {}; |
| 3380 | |
| 3381 | template <class _Ap, class _A0, class _A1, class _A2> |
| 3382 | struct __is_constructible3_imp<false, _Ap[], _A0, _A1, _A2> |
| 3383 | : public false_type |
| 3384 | {}; |
| 3385 | |
| 3386 | #endif // __has_feature(is_constructible) |
| 3387 | |
| 3388 | |
| 3389 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) && !defined(_LIBCPP_HAS_NO_VARIADICS) |
| 3390 | template <class _Tp, class ..._Args> |
| 3391 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_constructible_v |
| 3392 | = is_constructible<_Tp, _Args...>::value; |
| 3393 | #endif |
| 3394 | |
| 3395 | // is_default_constructible |
| 3396 | |
| 3397 | template <class _Tp> |
| 3398 | struct _LIBCPP_TEMPLATE_VIS is_default_constructible |
| 3399 | : public is_constructible<_Tp> |
| 3400 | {}; |
| 3401 | |
| 3402 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3403 | template <class _Tp> |
| 3404 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_default_constructible_v |
| 3405 | = is_default_constructible<_Tp>::value; |
| 3406 | #endif |
| 3407 | |
| 3408 | // is_copy_constructible |
| 3409 | |
| 3410 | template <class _Tp> |
| 3411 | struct _LIBCPP_TEMPLATE_VIS is_copy_constructible |
| 3412 | : public is_constructible<_Tp, |
| 3413 | typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; |
| 3414 | |
| 3415 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3416 | template <class _Tp> |
| 3417 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_copy_constructible_v |
| 3418 | = is_copy_constructible<_Tp>::value; |
| 3419 | #endif |
| 3420 | |
| 3421 | // is_move_constructible |
| 3422 | |
| 3423 | template <class _Tp> |
| 3424 | struct _LIBCPP_TEMPLATE_VIS is_move_constructible |
| 3425 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3426 | : public is_constructible<_Tp, typename add_rvalue_reference<_Tp>::type> |
| 3427 | #else |
| 3428 | : public is_copy_constructible<_Tp> |
| 3429 | #endif |
| 3430 | {}; |
| 3431 | |
| 3432 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3433 | template <class _Tp> |
| 3434 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_move_constructible_v |
| 3435 | = is_move_constructible<_Tp>::value; |
| 3436 | #endif |
| 3437 | |
| 3438 | // is_trivially_constructible |
| 3439 | |
| 3440 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
| 3441 | |
| 3442 | #if __has_feature(is_trivially_constructible) || _GNUC_VER >= 501 |
| 3443 | |
| 3444 | template <class _Tp, class... _Args> |
| 3445 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible |
| 3446 | : integral_constant<bool, __is_trivially_constructible(_Tp, _Args...)> |
| 3447 | { |
| 3448 | }; |
| 3449 | |
| 3450 | #else // !__has_feature(is_trivially_constructible) |
| 3451 | |
| 3452 | template <class _Tp, class... _Args> |
| 3453 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible |
| 3454 | : false_type |
| 3455 | { |
| 3456 | }; |
| 3457 | |
| 3458 | template <class _Tp> |
| 3459 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp> |
| 3460 | #if __has_feature(has_trivial_constructor) || (_GNUC_VER >= 403) |
| 3461 | : integral_constant<bool, __has_trivial_constructor(_Tp)> |
| 3462 | #else |
| 3463 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3464 | #endif |
| 3465 | { |
| 3466 | }; |
| 3467 | |
| 3468 | template <class _Tp> |
| 3469 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3470 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp&&> |
| 3471 | #else |
| 3472 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp> |
| 3473 | #endif |
| 3474 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3475 | { |
| 3476 | }; |
| 3477 | |
| 3478 | template <class _Tp> |
| 3479 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, const _Tp&> |
| 3480 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3481 | { |
| 3482 | }; |
| 3483 | |
| 3484 | template <class _Tp> |
| 3485 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp&> |
| 3486 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3487 | { |
| 3488 | }; |
| 3489 | |
| 3490 | #endif // !__has_feature(is_trivially_constructible) |
| 3491 | |
| 3492 | #else // _LIBCPP_HAS_NO_VARIADICS |
| 3493 | |
| 3494 | template <class _Tp, class _A0 = __is_construct::__nat, |
| 3495 | class _A1 = __is_construct::__nat> |
| 3496 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible |
| 3497 | : false_type |
| 3498 | { |
| 3499 | }; |
| 3500 | |
| 3501 | #if __has_feature(is_trivially_constructible) || _GNUC_VER >= 501 |
| 3502 | |
| 3503 | template <class _Tp> |
| 3504 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, __is_construct::__nat, |
| 3505 | __is_construct::__nat> |
| 3506 | : integral_constant<bool, __is_trivially_constructible(_Tp)> |
| 3507 | { |
| 3508 | }; |
| 3509 | |
| 3510 | template <class _Tp> |
| 3511 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp, |
| 3512 | __is_construct::__nat> |
| 3513 | : integral_constant<bool, __is_trivially_constructible(_Tp, _Tp)> |
| 3514 | { |
| 3515 | }; |
| 3516 | |
| 3517 | template <class _Tp> |
| 3518 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, const _Tp&, |
| 3519 | __is_construct::__nat> |
| 3520 | : integral_constant<bool, __is_trivially_constructible(_Tp, const _Tp&)> |
| 3521 | { |
| 3522 | }; |
| 3523 | |
| 3524 | template <class _Tp> |
| 3525 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp&, |
| 3526 | __is_construct::__nat> |
| 3527 | : integral_constant<bool, __is_trivially_constructible(_Tp, _Tp&)> |
| 3528 | { |
| 3529 | }; |
| 3530 | |
| 3531 | #else // !__has_feature(is_trivially_constructible) |
| 3532 | |
| 3533 | template <class _Tp> |
| 3534 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, __is_construct::__nat, |
| 3535 | __is_construct::__nat> |
| 3536 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3537 | { |
| 3538 | }; |
| 3539 | |
| 3540 | template <class _Tp> |
| 3541 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp, |
| 3542 | __is_construct::__nat> |
| 3543 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3544 | { |
| 3545 | }; |
| 3546 | |
| 3547 | template <class _Tp> |
| 3548 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, const _Tp&, |
| 3549 | __is_construct::__nat> |
| 3550 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3551 | { |
| 3552 | }; |
| 3553 | |
| 3554 | template <class _Tp> |
| 3555 | struct _LIBCPP_TEMPLATE_VIS is_trivially_constructible<_Tp, _Tp&, |
| 3556 | __is_construct::__nat> |
| 3557 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3558 | { |
| 3559 | }; |
| 3560 | |
| 3561 | #endif // !__has_feature(is_trivially_constructible) |
| 3562 | |
| 3563 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 3564 | |
| 3565 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) && !defined(_LIBCPP_HAS_NO_VARIADICS) |
| 3566 | template <class _Tp, class... _Args> |
| 3567 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_constructible_v |
| 3568 | = is_trivially_constructible<_Tp, _Args...>::value; |
| 3569 | #endif |
| 3570 | |
| 3571 | // is_trivially_default_constructible |
| 3572 | |
| 3573 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_default_constructible |
| 3574 | : public is_trivially_constructible<_Tp> |
| 3575 | {}; |
| 3576 | |
| 3577 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3578 | template <class _Tp> |
| 3579 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_default_constructible_v |
| 3580 | = is_trivially_default_constructible<_Tp>::value; |
| 3581 | #endif |
| 3582 | |
| 3583 | // is_trivially_copy_constructible |
| 3584 | |
| 3585 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_copy_constructible |
| 3586 | : public is_trivially_constructible<_Tp, typename add_lvalue_reference<const _Tp>::type> |
| 3587 | {}; |
| 3588 | |
| 3589 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3590 | template <class _Tp> |
| 3591 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_copy_constructible_v |
| 3592 | = is_trivially_copy_constructible<_Tp>::value; |
| 3593 | #endif |
| 3594 | |
| 3595 | // is_trivially_move_constructible |
| 3596 | |
| 3597 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_move_constructible |
| 3598 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3599 | : public is_trivially_constructible<_Tp, typename add_rvalue_reference<_Tp>::type> |
| 3600 | #else |
| 3601 | : public is_trivially_copy_constructible<_Tp> |
| 3602 | #endif |
| 3603 | {}; |
| 3604 | |
| 3605 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3606 | template <class _Tp> |
| 3607 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_move_constructible_v |
| 3608 | = is_trivially_move_constructible<_Tp>::value; |
| 3609 | #endif |
| 3610 | |
| 3611 | // is_trivially_assignable |
| 3612 | |
| 3613 | #if __has_feature(is_trivially_assignable) || _GNUC_VER >= 501 |
| 3614 | |
| 3615 | template <class _Tp, class _Arg> |
| 3616 | struct is_trivially_assignable |
| 3617 | : integral_constant<bool, __is_trivially_assignable(_Tp, _Arg)> |
| 3618 | { |
| 3619 | }; |
| 3620 | |
| 3621 | #else // !__has_feature(is_trivially_assignable) |
| 3622 | |
| 3623 | template <class _Tp, class _Arg> |
| 3624 | struct is_trivially_assignable |
| 3625 | : public false_type {}; |
| 3626 | |
| 3627 | template <class _Tp> |
| 3628 | struct is_trivially_assignable<_Tp&, _Tp> |
| 3629 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3630 | |
| 3631 | template <class _Tp> |
| 3632 | struct is_trivially_assignable<_Tp&, _Tp&> |
| 3633 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3634 | |
| 3635 | template <class _Tp> |
| 3636 | struct is_trivially_assignable<_Tp&, const _Tp&> |
| 3637 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3638 | |
| 3639 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3640 | |
| 3641 | template <class _Tp> |
| 3642 | struct is_trivially_assignable<_Tp&, _Tp&&> |
| 3643 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3644 | |
| 3645 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3646 | |
| 3647 | #endif // !__has_feature(is_trivially_assignable) |
| 3648 | |
| 3649 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3650 | template <class _Tp, class _Arg> |
| 3651 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_assignable_v |
| 3652 | = is_trivially_assignable<_Tp, _Arg>::value; |
| 3653 | #endif |
| 3654 | |
| 3655 | // is_trivially_copy_assignable |
| 3656 | |
| 3657 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_copy_assignable |
| 3658 | : public is_trivially_assignable<typename add_lvalue_reference<_Tp>::type, |
| 3659 | typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; |
| 3660 | |
| 3661 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3662 | template <class _Tp> |
| 3663 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_copy_assignable_v |
| 3664 | = is_trivially_copy_assignable<_Tp>::value; |
| 3665 | #endif |
| 3666 | |
| 3667 | // is_trivially_move_assignable |
| 3668 | |
| 3669 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_move_assignable |
| 3670 | : public is_trivially_assignable<typename add_lvalue_reference<_Tp>::type, |
| 3671 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3672 | typename add_rvalue_reference<_Tp>::type> |
| 3673 | #else |
| 3674 | typename add_lvalue_reference<_Tp>::type> |
| 3675 | #endif |
| 3676 | {}; |
| 3677 | |
| 3678 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3679 | template <class _Tp> |
| 3680 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_move_assignable_v |
| 3681 | = is_trivially_move_assignable<_Tp>::value; |
| 3682 | #endif |
| 3683 | |
| 3684 | // is_trivially_destructible |
| 3685 | |
| 3686 | #if __has_feature(has_trivial_destructor) || (_GNUC_VER >= 403) |
| 3687 | |
| 3688 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible |
| 3689 | : public integral_constant<bool, is_destructible<_Tp>::value && __has_trivial_destructor(_Tp)> {}; |
| 3690 | |
| 3691 | #else |
| 3692 | |
| 3693 | template <class _Tp> struct __libcpp_trivial_destructor |
| 3694 | : public integral_constant<bool, is_scalar<_Tp>::value || |
| 3695 | is_reference<_Tp>::value> {}; |
| 3696 | |
| 3697 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible |
| 3698 | : public __libcpp_trivial_destructor<typename remove_all_extents<_Tp>::type> {}; |
| 3699 | |
| 3700 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_destructible<_Tp[]> |
| 3701 | : public false_type {}; |
| 3702 | |
| 3703 | #endif |
| 3704 | |
| 3705 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3706 | template <class _Tp> |
| 3707 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_destructible_v |
| 3708 | = is_trivially_destructible<_Tp>::value; |
| 3709 | #endif |
| 3710 | |
| 3711 | // is_nothrow_constructible |
| 3712 | |
| 3713 | #if 0 |
| 3714 | template <class _Tp, class... _Args> |
| 3715 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible |
| 3716 | : public integral_constant<bool, __is_nothrow_constructible(_Tp(_Args...))> |
| 3717 | { |
| 3718 | }; |
| 3719 | |
| 3720 | #else |
| 3721 | |
| 3722 | #ifndef _LIBCPP_HAS_NO_VARIADICS |
| 3723 | |
| 3724 | #if __has_feature(cxx_noexcept) || (_GNUC_VER >= 407 && __cplusplus >= 201103L) |
| 3725 | |
| 3726 | template <bool, bool, class _Tp, class... _Args> struct __libcpp_is_nothrow_constructible; |
| 3727 | |
| 3728 | template <class _Tp, class... _Args> |
| 3729 | struct __libcpp_is_nothrow_constructible</*is constructible*/true, /*is reference*/false, _Tp, _Args...> |
| 3730 | : public integral_constant<bool, noexcept(_Tp(declval<_Args>()...))> |
| 3731 | { |
| 3732 | }; |
| 3733 | |
| 3734 | template <class _Tp> |
| 3735 | void __implicit_conversion_to(_Tp) noexcept { } |
| 3736 | |
| 3737 | template <class _Tp, class _Arg> |
| 3738 | struct __libcpp_is_nothrow_constructible</*is constructible*/true, /*is reference*/true, _Tp, _Arg> |
| 3739 | : public integral_constant<bool, noexcept(__implicit_conversion_to<_Tp>(declval<_Arg>()))> |
| 3740 | { |
| 3741 | }; |
| 3742 | |
| 3743 | template <class _Tp, bool _IsReference, class... _Args> |
| 3744 | struct __libcpp_is_nothrow_constructible</*is constructible*/false, _IsReference, _Tp, _Args...> |
| 3745 | : public false_type |
| 3746 | { |
| 3747 | }; |
| 3748 | |
| 3749 | template <class _Tp, class... _Args> |
| 3750 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible |
| 3751 | : __libcpp_is_nothrow_constructible<is_constructible<_Tp, _Args...>::value, is_reference<_Tp>::value, _Tp, _Args...> |
| 3752 | { |
| 3753 | }; |
| 3754 | |
| 3755 | template <class _Tp, size_t _Ns> |
| 3756 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp[_Ns]> |
| 3757 | : __libcpp_is_nothrow_constructible<is_constructible<_Tp>::value, is_reference<_Tp>::value, _Tp> |
| 3758 | { |
| 3759 | }; |
| 3760 | |
| 3761 | #else // __has_feature(cxx_noexcept) |
| 3762 | |
| 3763 | template <class _Tp, class... _Args> |
| 3764 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible |
| 3765 | : false_type |
| 3766 | { |
| 3767 | }; |
| 3768 | |
| 3769 | template <class _Tp> |
| 3770 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp> |
| 3771 | #if __has_feature(has_nothrow_constructor) || (_GNUC_VER >= 403) |
| 3772 | : integral_constant<bool, __has_nothrow_constructor(_Tp)> |
| 3773 | #else |
| 3774 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3775 | #endif |
| 3776 | { |
| 3777 | }; |
| 3778 | |
| 3779 | template <class _Tp> |
| 3780 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3781 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, _Tp&&> |
| 3782 | #else |
| 3783 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, _Tp> |
| 3784 | #endif |
| 3785 | #if __has_feature(has_nothrow_copy) || (_GNUC_VER >= 403) |
| 3786 | : integral_constant<bool, __has_nothrow_copy(_Tp)> |
| 3787 | #else |
| 3788 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3789 | #endif |
| 3790 | { |
| 3791 | }; |
| 3792 | |
| 3793 | template <class _Tp> |
| 3794 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, const _Tp&> |
| 3795 | #if __has_feature(has_nothrow_copy) || (_GNUC_VER >= 403) |
| 3796 | : integral_constant<bool, __has_nothrow_copy(_Tp)> |
| 3797 | #else |
| 3798 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3799 | #endif |
| 3800 | { |
| 3801 | }; |
| 3802 | |
| 3803 | template <class _Tp> |
| 3804 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, _Tp&> |
| 3805 | #if __has_feature(has_nothrow_copy) || (_GNUC_VER >= 403) |
| 3806 | : integral_constant<bool, __has_nothrow_copy(_Tp)> |
| 3807 | #else |
| 3808 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3809 | #endif |
| 3810 | { |
| 3811 | }; |
| 3812 | |
| 3813 | #endif // __has_feature(cxx_noexcept) |
| 3814 | |
| 3815 | #else // _LIBCPP_HAS_NO_VARIADICS |
| 3816 | |
| 3817 | template <class _Tp, class _A0 = __is_construct::__nat, |
| 3818 | class _A1 = __is_construct::__nat> |
| 3819 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible |
| 3820 | : false_type |
| 3821 | { |
| 3822 | }; |
| 3823 | |
| 3824 | template <class _Tp> |
| 3825 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, __is_construct::__nat, |
| 3826 | __is_construct::__nat> |
| 3827 | #if __has_feature(has_nothrow_constructor) || (_GNUC_VER >= 403) |
| 3828 | : integral_constant<bool, __has_nothrow_constructor(_Tp)> |
| 3829 | #else |
| 3830 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3831 | #endif |
| 3832 | { |
| 3833 | }; |
| 3834 | |
| 3835 | template <class _Tp> |
| 3836 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, _Tp, |
| 3837 | __is_construct::__nat> |
| 3838 | #if __has_feature(has_nothrow_copy) || (_GNUC_VER >= 403) |
| 3839 | : integral_constant<bool, __has_nothrow_copy(_Tp)> |
| 3840 | #else |
| 3841 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3842 | #endif |
| 3843 | { |
| 3844 | }; |
| 3845 | |
| 3846 | template <class _Tp> |
| 3847 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, const _Tp&, |
| 3848 | __is_construct::__nat> |
| 3849 | #if __has_feature(has_nothrow_copy) || (_GNUC_VER >= 403) |
| 3850 | : integral_constant<bool, __has_nothrow_copy(_Tp)> |
| 3851 | #else |
| 3852 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3853 | #endif |
| 3854 | { |
| 3855 | }; |
| 3856 | |
| 3857 | template <class _Tp> |
| 3858 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_constructible<_Tp, _Tp&, |
| 3859 | __is_construct::__nat> |
| 3860 | #if __has_feature(has_nothrow_copy) || (_GNUC_VER >= 403) |
| 3861 | : integral_constant<bool, __has_nothrow_copy(_Tp)> |
| 3862 | #else |
| 3863 | : integral_constant<bool, is_scalar<_Tp>::value> |
| 3864 | #endif |
| 3865 | { |
| 3866 | }; |
| 3867 | |
| 3868 | #endif // _LIBCPP_HAS_NO_VARIADICS |
| 3869 | #endif // __has_feature(is_nothrow_constructible) |
| 3870 | |
| 3871 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) && !defined(_LIBCPP_HAS_NO_VARIADICS) |
| 3872 | template <class _Tp, class ..._Args> |
| 3873 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_constructible_v |
| 3874 | = is_nothrow_constructible<_Tp, _Args...>::value; |
| 3875 | #endif |
| 3876 | |
| 3877 | // is_nothrow_default_constructible |
| 3878 | |
| 3879 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_default_constructible |
| 3880 | : public is_nothrow_constructible<_Tp> |
| 3881 | {}; |
| 3882 | |
| 3883 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3884 | template <class _Tp> |
| 3885 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_default_constructible_v |
| 3886 | = is_nothrow_default_constructible<_Tp>::value; |
| 3887 | #endif |
| 3888 | |
| 3889 | // is_nothrow_copy_constructible |
| 3890 | |
| 3891 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_constructible |
| 3892 | : public is_nothrow_constructible<_Tp, |
| 3893 | typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; |
| 3894 | |
| 3895 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3896 | template <class _Tp> |
| 3897 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_copy_constructible_v |
| 3898 | = is_nothrow_copy_constructible<_Tp>::value; |
| 3899 | #endif |
| 3900 | |
| 3901 | // is_nothrow_move_constructible |
| 3902 | |
| 3903 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_move_constructible |
| 3904 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3905 | : public is_nothrow_constructible<_Tp, typename add_rvalue_reference<_Tp>::type> |
| 3906 | #else |
| 3907 | : public is_nothrow_copy_constructible<_Tp> |
| 3908 | #endif |
| 3909 | {}; |
| 3910 | |
| 3911 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3912 | template <class _Tp> |
| 3913 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_move_constructible_v |
| 3914 | = is_nothrow_move_constructible<_Tp>::value; |
| 3915 | #endif |
| 3916 | |
| 3917 | // is_nothrow_assignable |
| 3918 | |
| 3919 | #if __has_feature(cxx_noexcept) || (_GNUC_VER >= 407 && __cplusplus >= 201103L) |
| 3920 | |
| 3921 | template <bool, class _Tp, class _Arg> struct __libcpp_is_nothrow_assignable; |
| 3922 | |
| 3923 | template <class _Tp, class _Arg> |
| 3924 | struct __libcpp_is_nothrow_assignable<false, _Tp, _Arg> |
| 3925 | : public false_type |
| 3926 | { |
| 3927 | }; |
| 3928 | |
| 3929 | template <class _Tp, class _Arg> |
| 3930 | struct __libcpp_is_nothrow_assignable<true, _Tp, _Arg> |
| 3931 | : public integral_constant<bool, noexcept(_VSTD::declval<_Tp>() = _VSTD::declval<_Arg>()) > |
| 3932 | { |
| 3933 | }; |
| 3934 | |
| 3935 | template <class _Tp, class _Arg> |
| 3936 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable |
| 3937 | : public __libcpp_is_nothrow_assignable<is_assignable<_Tp, _Arg>::value, _Tp, _Arg> |
| 3938 | { |
| 3939 | }; |
| 3940 | |
| 3941 | #else // __has_feature(cxx_noexcept) |
| 3942 | |
| 3943 | template <class _Tp, class _Arg> |
| 3944 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable |
| 3945 | : public false_type {}; |
| 3946 | |
| 3947 | template <class _Tp> |
| 3948 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable<_Tp&, _Tp> |
| 3949 | #if __has_feature(has_nothrow_assign) || (_GNUC_VER >= 403) |
| 3950 | : integral_constant<bool, __has_nothrow_assign(_Tp)> {}; |
| 3951 | #else |
| 3952 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3953 | #endif |
| 3954 | |
| 3955 | template <class _Tp> |
| 3956 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable<_Tp&, _Tp&> |
| 3957 | #if __has_feature(has_nothrow_assign) || (_GNUC_VER >= 403) |
| 3958 | : integral_constant<bool, __has_nothrow_assign(_Tp)> {}; |
| 3959 | #else |
| 3960 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3961 | #endif |
| 3962 | |
| 3963 | template <class _Tp> |
| 3964 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_assignable<_Tp&, const _Tp&> |
| 3965 | #if __has_feature(has_nothrow_assign) || (_GNUC_VER >= 403) |
| 3966 | : integral_constant<bool, __has_nothrow_assign(_Tp)> {}; |
| 3967 | #else |
| 3968 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3969 | #endif |
| 3970 | |
| 3971 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3972 | |
| 3973 | template <class _Tp> |
| 3974 | struct is_nothrow_assignable<_Tp&, _Tp&&> |
| 3975 | #if __has_feature(has_nothrow_assign) || (_GNUC_VER >= 403) |
| 3976 | : integral_constant<bool, __has_nothrow_assign(_Tp)> {}; |
| 3977 | #else |
| 3978 | : integral_constant<bool, is_scalar<_Tp>::value> {}; |
| 3979 | #endif |
| 3980 | |
| 3981 | #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 3982 | |
| 3983 | #endif // __has_feature(cxx_noexcept) |
| 3984 | |
| 3985 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3986 | template <class _Tp, class _Arg> |
| 3987 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_assignable_v |
| 3988 | = is_nothrow_assignable<_Tp, _Arg>::value; |
| 3989 | #endif |
| 3990 | |
| 3991 | // is_nothrow_copy_assignable |
| 3992 | |
| 3993 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_copy_assignable |
| 3994 | : public is_nothrow_assignable<typename add_lvalue_reference<_Tp>::type, |
| 3995 | typename add_lvalue_reference<typename add_const<_Tp>::type>::type> {}; |
| 3996 | |
| 3997 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 3998 | template <class _Tp> |
| 3999 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_copy_assignable_v |
| 4000 | = is_nothrow_copy_assignable<_Tp>::value; |
| 4001 | #endif |
| 4002 | |
| 4003 | // is_nothrow_move_assignable |
| 4004 | |
| 4005 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_move_assignable |
| 4006 | : public is_nothrow_assignable<typename add_lvalue_reference<_Tp>::type, |
| 4007 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 4008 | typename add_rvalue_reference<_Tp>::type> |
| 4009 | #else |
| 4010 | typename add_lvalue_reference<_Tp>::type> |
| 4011 | #endif |
| 4012 | {}; |
| 4013 | |
| 4014 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4015 | template <class _Tp> |
| 4016 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_move_assignable_v |
| 4017 | = is_nothrow_move_assignable<_Tp>::value; |
| 4018 | #endif |
| 4019 | |
| 4020 | // is_nothrow_destructible |
| 4021 | |
| 4022 | #if __has_feature(cxx_noexcept) || (_GNUC_VER >= 407 && __cplusplus >= 201103L) |
| 4023 | |
| 4024 | template <bool, class _Tp> struct __libcpp_is_nothrow_destructible; |
| 4025 | |
| 4026 | template <class _Tp> |
| 4027 | struct __libcpp_is_nothrow_destructible<false, _Tp> |
| 4028 | : public false_type |
| 4029 | { |
| 4030 | }; |
| 4031 | |
| 4032 | template <class _Tp> |
| 4033 | struct __libcpp_is_nothrow_destructible<true, _Tp> |
| 4034 | : public integral_constant<bool, noexcept(_VSTD::declval<_Tp>().~_Tp()) > |
| 4035 | { |
| 4036 | }; |
| 4037 | |
| 4038 | template <class _Tp> |
| 4039 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible |
| 4040 | : public __libcpp_is_nothrow_destructible<is_destructible<_Tp>::value, _Tp> |
| 4041 | { |
| 4042 | }; |
| 4043 | |
| 4044 | template <class _Tp, size_t _Ns> |
| 4045 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp[_Ns]> |
| 4046 | : public is_nothrow_destructible<_Tp> |
| 4047 | { |
| 4048 | }; |
| 4049 | |
| 4050 | template <class _Tp> |
| 4051 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp&> |
| 4052 | : public true_type |
| 4053 | { |
| 4054 | }; |
| 4055 | |
| 4056 | #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES |
| 4057 | |
| 4058 | template <class _Tp> |
| 4059 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp&&> |
| 4060 | : public true_type |
| 4061 | { |
| 4062 | }; |
| 4063 | |
| 4064 | #endif |
| 4065 | |
| 4066 | #else |
| 4067 | |
| 4068 | template <class _Tp> struct __libcpp_nothrow_destructor |
| 4069 | : public integral_constant<bool, is_scalar<_Tp>::value || |
| 4070 | is_reference<_Tp>::value> {}; |
| 4071 | |
| 4072 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible |
| 4073 | : public __libcpp_nothrow_destructor<typename remove_all_extents<_Tp>::type> {}; |
| 4074 | |
| 4075 | template <class _Tp> |
| 4076 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_destructible<_Tp[]> |
| 4077 | : public false_type {}; |
| 4078 | |
| 4079 | #endif |
| 4080 | |
| 4081 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4082 | template <class _Tp> |
| 4083 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_nothrow_destructible_v |
| 4084 | = is_nothrow_destructible<_Tp>::value; |
| 4085 | #endif |
| 4086 | |
| 4087 | // is_pod |
| 4088 | |
| 4089 | #if __has_feature(is_pod) || (_GNUC_VER >= 403) |
| 4090 | |
| 4091 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_pod |
| 4092 | : public integral_constant<bool, __is_pod(_Tp)> {}; |
| 4093 | |
| 4094 | #else |
| 4095 | |
| 4096 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_pod |
| 4097 | : public integral_constant<bool, is_trivially_default_constructible<_Tp>::value && |
| 4098 | is_trivially_copy_constructible<_Tp>::value && |
| 4099 | is_trivially_copy_assignable<_Tp>::value && |
| 4100 | is_trivially_destructible<_Tp>::value> {}; |
| 4101 | |
| 4102 | #endif |
| 4103 | |
| 4104 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4105 | template <class _Tp> |
| 4106 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_pod_v |
| 4107 | = is_pod<_Tp>::value; |
| 4108 | #endif |
| 4109 | |
| 4110 | // is_literal_type; |
| 4111 | |
| 4112 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_literal_type |
| 4113 | #ifdef _LIBCPP_IS_LITERAL |
| 4114 | : public integral_constant<bool, _LIBCPP_IS_LITERAL(_Tp)> |
| 4115 | #else |
| 4116 | : integral_constant<bool, is_scalar<typename remove_all_extents<_Tp>::type>::value || |
| 4117 | is_reference<typename remove_all_extents<_Tp>::type>::value> |
| 4118 | #endif |
| 4119 | {}; |
| 4120 | |
| 4121 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4122 | template <class _Tp> |
| 4123 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_literal_type_v |
| 4124 | = is_literal_type<_Tp>::value; |
| 4125 | #endif |
| 4126 | |
| 4127 | // is_standard_layout; |
| 4128 | |
| 4129 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_standard_layout |
| 4130 | #if __has_feature(is_standard_layout) || (_GNUC_VER >= 407) |
| 4131 | : public integral_constant<bool, __is_standard_layout(_Tp)> |
| 4132 | #else |
| 4133 | : integral_constant<bool, is_scalar<typename remove_all_extents<_Tp>::type>::value> |
| 4134 | #endif |
| 4135 | {}; |
| 4136 | |
| 4137 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4138 | template <class _Tp> |
| 4139 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_standard_layout_v |
| 4140 | = is_standard_layout<_Tp>::value; |
| 4141 | #endif |
| 4142 | |
| 4143 | // is_trivially_copyable; |
| 4144 | |
| 4145 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivially_copyable |
| 4146 | #if __has_feature(is_trivially_copyable) |
| 4147 | : public integral_constant<bool, __is_trivially_copyable(_Tp)> |
| 4148 | #elif _GNUC_VER >= 501 |
| 4149 | : public integral_constant<bool, !is_volatile<_Tp>::value && __is_trivially_copyable(_Tp)> |
| 4150 | #else |
| 4151 | : integral_constant<bool, is_scalar<typename remove_all_extents<_Tp>::type>::value> |
| 4152 | #endif |
| 4153 | {}; |
| 4154 | |
| 4155 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4156 | template <class _Tp> |
| 4157 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivially_copyable_v |
| 4158 | = is_trivially_copyable<_Tp>::value; |
| 4159 | #endif |
| 4160 | |
| 4161 | // is_trivial; |
| 4162 | |
| 4163 | template <class _Tp> struct _LIBCPP_TEMPLATE_VIS is_trivial |
| 4164 | #if __has_feature(is_trivial) || _GNUC_VER >= 407 |
| 4165 | : public integral_constant<bool, __is_trivial(_Tp)> |
| 4166 | #else |
| 4167 | : integral_constant<bool, is_trivially_copyable<_Tp>::value && |
| 4168 | is_trivially_default_constructible<_Tp>::value> |
| 4169 | #endif |
| 4170 | {}; |
| 4171 | |
| 4172 | #if _LIBCPP_STD_VER > 14 && !defined(_LIBCPP_HAS_NO_VARIABLE_TEMPLATES) |
| 4173 | template <class _Tp> |
| 4174 | _LIBCPP_INLINE_VAR _LIBCPP_CONSTEXPR bool is_trivial_v |
| 4175 | = is_trivial<_Tp>::value; |
| 4176 | #endif |
| 4177 | |
| 4178 | template <class _Tp> struct __is_reference_wrapper_impl : public false_type {}; |
| 4179 | template <class _Tp> struct __is_reference_wrapper_impl<reference_wrapper<_Tp> > : public true_type {}; |
| 4180 | template <class _Tp> struct __is_reference_wrapper |
| 4181 | : public __is_reference_wrapper_impl<typename remove_cv<_Tp>::type> {}; |
| 4182 | |
| 4183 | #ifndef _LIBCPP_CXX03_LANG |
| 4184 | |
| 4185 | template <class _Fp, class _A0, |
| 4186 | class _DecayFp = typename decay<_Fp>::type, |
| 4187 | class _DecayA0 = typename decay<_A0>::type, |
| 4188 | class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> |
| 4189 | using __enable_if_bullet1 = typename enable_if |
| 4190 | < |
| 4191 | is_member_function_pointer<_DecayFp>::value |
| 4192 | && is_base_of<_ClassT, _DecayA0>::value |
| 4193 | >::type; |
| 4194 | |
| 4195 | template <class _Fp, class _A0, |
| 4196 | class _DecayFp = typename decay<_Fp>::type, |
| 4197 | class _DecayA0 = typename decay<_A0>::type> |
| 4198 | using __enable_if_bullet2 = typename enable_if |
| 4199 | < |
| 4200 | is_member_function_pointer<_DecayFp>::value |
| 4201 | && __is_reference_wrapper<_DecayA0>::value |
| 4202 | >::type; |
| 4203 | |
| 4204 | template <class _Fp, class _A0, |
| 4205 | class _DecayFp = typename decay<_Fp>::type, |
| 4206 | class _DecayA0 = typename decay<_A0>::type, |
| 4207 | class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> |
| 4208 | using __enable_if_bullet3 = typename enable_if |
| 4209 | < |
| 4210 | is_member_function_pointer<_DecayFp>::value |
| 4211 | && !is_base_of<_ClassT, _DecayA0>::value |
| 4212 | && !__is_reference_wrapper<_DecayA0>::value |
| 4213 | >::type; |
| 4214 | |
| 4215 | template <class _Fp, class _A0, |
| 4216 | class _DecayFp = typename decay<_Fp>::type, |
| 4217 | class _DecayA0 = typename decay<_A0>::type, |
| 4218 | class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> |
| 4219 | using __enable_if_bullet4 = typename enable_if |
| 4220 | < |
| 4221 | is_member_object_pointer<_DecayFp>::value |
| 4222 | && is_base_of<_ClassT, _DecayA0>::value |
| 4223 | >::type; |
| 4224 | |
| 4225 | template <class _Fp, class _A0, |
| 4226 | class _DecayFp = typename decay<_Fp>::type, |
| 4227 | class _DecayA0 = typename decay<_A0>::type> |
| 4228 | using __enable_if_bullet5 = typename enable_if |
| 4229 | < |
| 4230 | is_member_object_pointer<_DecayFp>::value |
| 4231 | && __is_reference_wrapper<_DecayA0>::value |
| 4232 | >::type; |
| 4233 | |
| 4234 | template <class _Fp, class _A0, |
| 4235 | class _DecayFp = typename decay<_Fp>::type, |
| 4236 | class _DecayA0 = typename decay<_A0>::type, |
| 4237 | class _ClassT = typename __member_pointer_class_type<_DecayFp>::type> |
| 4238 | using __enable_if_bullet6 = typename enable_if |
| 4239 | < |
| 4240 | is_member_object_pointer<_DecayFp>::value |
| 4241 | && !is_base_of<_ClassT, _DecayA0>::value |
| 4242 | && !__is_reference_wrapper<_DecayA0>::value |
| 4243 | >::type; |
| 4244 | |
| 4245 | // __invoke forward declarations |
| 4246 | |
| 4247 | // fall back - none of the bullets |
| 4248 | |
| 4249 | #define _LIBCPP_INVOKE_RETURN(...) \ |
| 4250 | noexcept(noexcept(__VA_ARGS__)) -> decltype(__VA_ARGS__) \ |
| 4251 | { return __VA_ARGS__; } |
| 4252 | |
| 4253 | template <class ..._Args> |
| 4254 | auto __invoke(__any, _Args&& ...__args) -> __nat; |
| 4255 | |
| 4256 | template <class ..._Args> |
| 4257 | auto __invoke_constexpr(__any, _Args&& ...__args) -> __nat; |
| 4258 | |
| 4259 | // bullets 1, 2 and 3 |
| 4260 | |
| 4261 | template <class _Fp, class _A0, class ..._Args, |
| 4262 | class = __enable_if_bullet1<_Fp, _A0>> |
| 4263 | inline _LIBCPP_INLINE_VISIBILITY |
| 4264 | auto |
| 4265 | __invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
| 4266 | _LIBCPP_INVOKE_RETURN((_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...)) |
| 4267 | |
| 4268 | template <class _Fp, class _A0, class ..._Args, |
| 4269 | class = __enable_if_bullet1<_Fp, _A0>> |
| 4270 | inline _LIBCPP_INLINE_VISIBILITY |
| 4271 | _LIBCPP_CONSTEXPR auto |
| 4272 | __invoke_constexpr(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
| 4273 | _LIBCPP_INVOKE_RETURN((_VSTD::forward<_A0>(__a0).*__f)(_VSTD::forward<_Args>(__args)...)) |
| 4274 | |
| 4275 | template <class _Fp, class _A0, class ..._Args, |
| 4276 | class = __enable_if_bullet2<_Fp, _A0>> |
| 4277 | inline _LIBCPP_INLINE_VISIBILITY |
| 4278 | auto |
| 4279 | __invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
| 4280 | _LIBCPP_INVOKE_RETURN((__a0.get().*__f)(_VSTD::forward<_Args>(__args)...)) |
| 4281 | |
| 4282 | template <class _Fp, class _A0, class ..._Args, |
| 4283 | class = __enable_if_bullet2<_Fp, _A0>> |
| 4284 | inline _LIBCPP_INLINE_VISIBILITY |
| 4285 | _LIBCPP_CONSTEXPR auto |
| 4286 | __invoke_constexpr(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
| 4287 | _LIBCPP_INVOKE_RETURN((__a0.get().*__f)(_VSTD::forward<_Args>(__args)...)) |
| 4288 | |
| 4289 | template <class _Fp, class _A0, class ..._Args, |
| 4290 | class = __enable_if_bullet3<_Fp, _A0>> |
| 4291 | inline _LIBCPP_INLINE_VISIBILITY |
| 4292 | auto |
| 4293 | __invoke(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
| 4294 | _LIBCPP_INVOKE_RETURN(((*_VSTD::forward<_A0>(__a0)).*__f)(_VSTD::forward<_Args>(__args)...)) |
| 4295 | |
| 4296 | template <class _Fp, class _A0, class ..._Args, |
| 4297 | class = __enable_if_bullet3<_Fp, _A0>> |
| 4298 | inline _LIBCPP_INLINE_VISIBILITY |
| 4299 | _LIBCPP_CONSTEXPR auto |
| 4300 | __invoke_constexpr(_Fp&& __f, _A0&& __a0, _Args&& ...__args) |
| 4301 | _LIBCPP_INVOKE_RETURN(((*_VSTD::forward<_A0>(__a0)).*__f)(_VSTD::forward<_Args>(__args)...)) |
| 4302 | |
| 4303 | // bullets 4, 5 and 6 |
| 4304 | |
| 4305 | template <class _Fp, class _A0, |
| 4306 | class = __enable_if_bullet4<_Fp, _A0>> |
| 4307 | inline _LIBCPP_INLINE_VISIBILITY |
| 4308 | auto |
| 4309 | __invoke(_Fp&& __f, _A0&& __a0) |
| 4310 | _LIBCPP_INVOKE_RETURN(_VSTD::forward<_A0>(__a0).*__f) |
| 4311 | |
| 4312 | template <class _Fp, class _A0, |
| 4313 | class = __enable_if_bullet4<_Fp, _A0>> |
| 4314 | inline _LIBCPP_INLINE_VISIBILITY |
| 4315 | _LIBCPP_CONSTEXPR auto |
| 4316 | __invoke_constexpr(_Fp&& __f, _A0&& __a0) |
| 4317 | _LIBCPP_INVOKE_RETURN(_VSTD::forward<_A0>(__a0).*__f) |
| 4318 | |
| 4319 | template <class _Fp, class _A0, |
| 4320 | class = __enable_if_bullet5<_Fp, _A0>> |
| 4321 | inline _LIBCPP_INLINE_VISIBILITY |
| 4322 | auto |
| 4323 | __invoke(_Fp&& __f, _A0&& __a0) |
| 4324 | _LIBCPP_INVOKE_RETURN(__a0.get().*__f) |
| 4325 | |
| 4326 | template <class _Fp, class _A0, |
| 4327 | class = __enable_if_bullet5<_Fp, _A0>> |
| 4328 | inline _LIBCPP_INLINE_VISIBILITY |
| 4329 | _LIBCPP_CONSTEXPR auto |
| 4330 | __invoke_constexpr(_Fp&& __f, _A0&& __a0) |
| 4331 | _LIBCPP_INVOKE_RETURN(__a0.get().*__f) |
| 4332 | |
| 4333 | template <class _Fp, class _A0, |
| 4334 | class = __enable_if_bullet6<_Fp, _A0>> |
| 4335 | inline _LIBCPP_INLINE_VISIBILITY |
| 4336 | auto |
| 4337 | __invoke(_Fp&& __f, _A0&& __a0) |
| 4338 | _LIBCPP_INVOKE_RETURN((*_VSTD::forward<_A0>(__a0)).*__f) |
| 4339 | |
| 4340 | template <class _Fp, class _A0, |
| 4341 | class = __enable_if_bullet6<_Fp, _A0>> |
| 4342 | inline _LIBCPP_INLINE_VISIBILITY |
| 4343 | _LIBCPP_CONSTEXPR auto |
| 4344 | __invoke_constexpr(_Fp&& __f, _A0&& __a0) |
| 4345 | _LIBCPP_INVOKE_RETURN((*_VSTD::forward<_A0>(__a0)).*__f) |
| 4346 | |
| 4347 | // bullet 7 |
| 4348 | |
| 4349 | template <class _Fp, class ..._Args> |
| 4350 | inline _LIBCPP_INLINE_VISIBILITY |
| 4351 | auto |
| 4352 | __invoke(_Fp&& __f, _Args&& ...__args) |
| 4353 | _LIBCPP_INVOKE_RETURN(_VSTD::forward<_Fp>(__f)(_VSTD::forward<_Args>(__args)...)) |
| 4354 | |
| 4355 | template <class _Fp, class ..._Args> |
| 4356 | inline _LIBCPP_INLINE_VISIBILITY |
| 4357 | _LIBCPP_CONSTEXPR auto |
| 4358 | __invoke_constexpr(_Fp&& __f, _Args&& ...__args) |
| 4359 | _LIBCPP_INVOKE_RETURN(_VSTD::forward<_Fp>(__f)(_VSTD::forward<_Args>(__args)...)) |
| 4360 | |
| 4361 | #undef _LIBCPP_INVOKE_RETURN |
| 4362 | |
| 4363 | // __invokable |
| 4364 | |
| 4365 | template <class _Ret, class _Fp, class ..._Args> |
| 4366 | struct __invokable_r |
| 4367 | { |
| 4368 | // FIXME: Check that _Ret, _Fp, and _Args... are all complete types, cv void, |
| 4369 | // or incomplete array types as required by the standard. |
| 4370 | using _Result = decltype( |
| 4371 | _VSTD::__invoke(_VSTD::declval<_Fp>(), _VSTD::declval<_Args>()...)); |
| 4372 | |
| 4373 | using type = |
| 4374 | typename conditional< |
| 4375 | !is_same<_Result, __nat>::value, |
| 4376 | typename conditional< |
| 4377 | is_void<_Ret>::value, |
| 4378 | true_type, |
| 4379 | is_convertible<_Result, _Ret> |
| 4380 | >::type, |
| 4381 | false_type |
| 4382 | >::type; |
| 4383 | static const bool value = type::value; |
| 4384 | }; |
| 4385 | |
| 4386 | template <class _Fp, class ..._Args> |
| 4387 | using __invokable = __invokable_r<void, _Fp, _Args...>; |
| 4388 | |
| 4389 | template <bool _IsInvokable, bool _IsCVVoid, class _Ret, class _Fp, class ..._Args> |
| 4390 | struct __nothrow_invokable_r_imp { |
| 4391 | static const bool value = false; |
| 4392 | }; |
| 4393 | |
| 4394 | template <class _Ret, class _Fp, class ..._Args> |
| 4395 | struct __nothrow_invokable_r_imp<true, false, _Ret, _Fp, _Args...> |
| 4396 | { |
| 4397 | typedef __nothrow_invokable_r_imp _ThisT; |
| 4398 | |
| 4399 | template <class _Tp> |
| 4400 | static void __test_noexcept(_Tp) noexcept; |
| 4401 | |
| 4402 | static const bool value = noexcept(_ThisT::__test_noexcept<_Ret>( |
| 4403 | _VSTD::__invoke(_VSTD::declval<_Fp>(), _VSTD::declval<_Args>()...))); |
| 4404 | }; |
| 4405 | |
| 4406 | template <class _Ret, class _Fp, class ..._Args> |
| 4407 | struct __nothrow_invokable_r_imp<true, true, _Ret, _Fp, _Args...> |
| 4408 | { |
| 4409 | static const bool value = noexcept( |
| 4410 | _VSTD::__invoke(_VSTD::declval<_Fp>(), _VSTD::declval<_Args>()...)); |
| 4411 | }; |
| 4412 | |
| 4413 | template <class _Ret, class _Fp, class ..._Args> |
| 4414 | using __nothrow_invokable_r = |
| 4415 | __nothrow_invokable_r_imp< |
| 4416 | __invokable_r<_Ret, _Fp, _Args...>::value, |
| 4417 | is_void<_Ret>::value, |
| 4418 | _Ret, _Fp, _Args... |
| 4419 | >; |
| 4420 | |
| 4421 | template <class _Fp, class ..._Args> |
| 4422 | using __nothrow_invokable = |
| 4423 | __nothrow_invokable_r_imp< |
| 4424 | __invokable<_Fp, _Args...>::value, |
| 4425 | true, void, _Fp, _Args... |
| 4426 | >; |
| 4427 | |
| 4428 | template <class _Fp, class ..._Args> |
| 4429 | struct __invoke_of |
| 4430 | : public enable_if< |
| 4431 | __invokable<_Fp, _Args...>::value, |
| 4432 | typename __invokable_r<void, _Fp, _Args...>::_Result> |
| 4433 | { |
| 4434 | }; |
| 4435 | |
| 4436 | // result_of |
| 4437 | |
| 4438 | template <class _Fp, class ..._Args> |
| 4439 | class _LIBCPP_TEMPLATE_VIS result_of<_Fp(_Args...)> |
| 4440 | : public __invoke_of<_Fp, _Args...> |
| 4441 | { |
| 4442 | }; |
| 4443 | |
| 4444 | #if _LIBCPP_STD_VER > 11 |
| 4445 | template <class _Tp> using result_of_t = typename result_of<_Tp>::type; |
| 4446 | #endif |
| 4447 | |
| 4448 | #if _LIBCPP_STD_VER > 14 |
| 4449 | |
| 4450 | // invoke_result |
| 4451 | |
| 4452 | template <class _Fn, class... _Args> |
| 4453 | struct _LIBCPP_TEMPLATE_VIS invoke_result |
| 4454 | : __invoke_of<_Fn, _Args...> |
| 4455 | { |
| 4456 | }; |
| 4457 | |
| 4458 | template <class _Fn, class... _Args> |
| 4459 | using invoke_result_t = typename invoke_result<_Fn, _Args...>::type; |
| 4460 | |
| 4461 | // is_invocable |
| 4462 | |
| 4463 | template <class _Fn, class ..._Args> |
| 4464 | struct _LIBCPP_TEMPLATE_VIS is_invocable |
| 4465 | : integral_constant<bool, __invokable<_Fn, _Args...>::value> {}; |
| 4466 | |
| 4467 | template <class _Ret, class _Fn, class ..._Args> |
| 4468 | struct _LIBCPP_TEMPLATE_VIS is_invocable_r |
| 4469 | : integral_constant<bool, __invokable_r<_Ret, _Fn, _Args...>::value> {}; |
| 4470 | |
| 4471 | template <class _Fn, class ..._Args> |
| 4472 | _LIBCPP_INLINE_VAR constexpr bool is_invocable_v |
| 4473 | = is_invocable<_Fn, _Args...>::value; |
| 4474 | |
| 4475 | template <class _Ret, class _Fn, class ..._Args> |
| 4476 | _LIBCPP_INLINE_VAR constexpr bool is_invocable_r_v |
| 4477 | = is_invocable_r<_Ret, _Fn, _Args...>::value; |
| 4478 | |
| 4479 | // is_nothrow_invocable |
| 4480 | |
| 4481 | template <class _Fn, class ..._Args> |
| 4482 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable |
| 4483 | : integral_constant<bool, __nothrow_invokable<_Fn, _Args...>::value> {}; |
| 4484 | |
| 4485 | template <class _Ret, class _Fn, class ..._Args> |
| 4486 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_invocable_r |
| 4487 | : integral_constant<bool, __nothrow_invokable_r<_Ret, _Fn, _Args...>::value> {}; |
| 4488 | |
| 4489 | template <class _Fn, class ..._Args> |
| 4490 | _LIBCPP_INLINE_VAR constexpr bool is_nothrow_invocable_v |
| 4491 | = is_nothrow_invocable<_Fn, _Args...>::value; |
| 4492 | |
| 4493 | template <class _Ret, class _Fn, class ..._Args> |
| 4494 | _LIBCPP_INLINE_VAR constexpr bool is_nothrow_invocable_r_v |
| 4495 | = is_nothrow_invocable_r<_Ret, _Fn, _Args...>::value; |
| 4496 | |
| 4497 | #endif // _LIBCPP_STD_VER > 14 |
| 4498 | |
| 4499 | #endif // !defined(_LIBCPP_CXX03_LANG) |
| 4500 | |
| 4501 | template <class _Tp> struct __is_swappable; |
| 4502 | template <class _Tp> struct __is_nothrow_swappable; |
| 4503 | |
| 4504 | template <class _Tp> |
| 4505 | inline _LIBCPP_INLINE_VISIBILITY |
| 4506 | #ifndef _LIBCPP_CXX03_LANG |
| 4507 | typename enable_if |
| 4508 | < |
| 4509 | is_move_constructible<_Tp>::value && |
| 4510 | is_move_assignable<_Tp>::value |
| 4511 | >::type |
| 4512 | #else |
| 4513 | void |
| 4514 | #endif |
| 4515 | swap(_Tp& __x, _Tp& __y) _NOEXCEPT_(is_nothrow_move_constructible<_Tp>::value && |
| 4516 | is_nothrow_move_assignable<_Tp>::value) |
| 4517 | { |
| 4518 | _Tp __t(_VSTD::move(__x)); |
| 4519 | __x = _VSTD::move(__y); |
| 4520 | __y = _VSTD::move(__t); |
| 4521 | } |
| 4522 | |
| 4523 | template<class _Tp, size_t _Np> |
| 4524 | inline _LIBCPP_INLINE_VISIBILITY |
| 4525 | typename enable_if< |
| 4526 | __is_swappable<_Tp>::value |
| 4527 | >::type |
| 4528 | swap(_Tp (&__a)[_Np], _Tp (&__b)[_Np]) _NOEXCEPT_(__is_nothrow_swappable<_Tp>::value); |
| 4529 | |
| 4530 | template <class _ForwardIterator1, class _ForwardIterator2> |
| 4531 | inline _LIBCPP_INLINE_VISIBILITY |
| 4532 | void |
| 4533 | iter_swap(_ForwardIterator1 __a, _ForwardIterator2 __b) |
| 4534 | // _NOEXCEPT_(_NOEXCEPT_(swap(*__a, *__b))) |
| 4535 | _NOEXCEPT_(_NOEXCEPT_(swap(*_VSTD::declval<_ForwardIterator1>(), |
| 4536 | *_VSTD::declval<_ForwardIterator2>()))) |
| 4537 | { |
| 4538 | swap(*__a, *__b); |
| 4539 | } |
| 4540 | |
| 4541 | // __swappable |
| 4542 | |
| 4543 | namespace __detail |
| 4544 | { |
| 4545 | // ALL generic swap overloads MUST already have a declaration available at this point. |
| 4546 | |
| 4547 | template <class _Tp, class _Up = _Tp, |
| 4548 | bool _NotVoid = !is_void<_Tp>::value && !is_void<_Up>::value> |
| 4549 | struct __swappable_with |
| 4550 | { |
| 4551 | template <class _LHS, class _RHS> |
| 4552 | static decltype(swap(_VSTD::declval<_LHS>(), _VSTD::declval<_RHS>())) |
| 4553 | __test_swap(int); |
| 4554 | template <class, class> |
| 4555 | static __nat __test_swap(long); |
| 4556 | |
| 4557 | // Extra parens are needed for the C++03 definition of decltype. |
| 4558 | typedef decltype((__test_swap<_Tp, _Up>(0))) __swap1; |
| 4559 | typedef decltype((__test_swap<_Up, _Tp>(0))) __swap2; |
| 4560 | |
| 4561 | static const bool value = !is_same<__swap1, __nat>::value |
| 4562 | && !is_same<__swap2, __nat>::value; |
| 4563 | }; |
| 4564 | |
| 4565 | template <class _Tp, class _Up> |
| 4566 | struct __swappable_with<_Tp, _Up, false> : false_type {}; |
| 4567 | |
| 4568 | template <class _Tp, class _Up = _Tp, bool _Swappable = __swappable_with<_Tp, _Up>::value> |
| 4569 | struct __nothrow_swappable_with { |
| 4570 | static const bool value = |
| 4571 | #ifndef _LIBCPP_HAS_NO_NOEXCEPT |
| 4572 | noexcept(swap(_VSTD::declval<_Tp>(), _VSTD::declval<_Up>())) |
| 4573 | && noexcept(swap(_VSTD::declval<_Up>(), _VSTD::declval<_Tp>())); |
| 4574 | #else |
| 4575 | false; |
| 4576 | #endif |
| 4577 | }; |
| 4578 | |
| 4579 | template <class _Tp, class _Up> |
| 4580 | struct __nothrow_swappable_with<_Tp, _Up, false> : false_type {}; |
| 4581 | |
| 4582 | } // __detail |
| 4583 | |
| 4584 | template <class _Tp> |
| 4585 | struct __is_swappable |
| 4586 | : public integral_constant<bool, __detail::__swappable_with<_Tp&>::value> |
| 4587 | { |
| 4588 | }; |
| 4589 | |
| 4590 | template <class _Tp> |
| 4591 | struct __is_nothrow_swappable |
| 4592 | : public integral_constant<bool, __detail::__nothrow_swappable_with<_Tp&>::value> |
| 4593 | { |
| 4594 | }; |
| 4595 | |
| 4596 | #if _LIBCPP_STD_VER > 14 |
| 4597 | |
| 4598 | template <class _Tp, class _Up> |
| 4599 | struct _LIBCPP_TEMPLATE_VIS is_swappable_with |
| 4600 | : public integral_constant<bool, __detail::__swappable_with<_Tp, _Up>::value> |
| 4601 | { |
| 4602 | }; |
| 4603 | |
| 4604 | template <class _Tp> |
| 4605 | struct _LIBCPP_TEMPLATE_VIS is_swappable |
| 4606 | : public conditional< |
| 4607 | __is_referenceable<_Tp>::value, |
| 4608 | is_swappable_with< |
| 4609 | typename add_lvalue_reference<_Tp>::type, |
| 4610 | typename add_lvalue_reference<_Tp>::type>, |
| 4611 | false_type |
| 4612 | >::type |
| 4613 | { |
| 4614 | }; |
| 4615 | |
| 4616 | template <class _Tp, class _Up> |
| 4617 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_swappable_with |
| 4618 | : public integral_constant<bool, __detail::__nothrow_swappable_with<_Tp, _Up>::value> |
| 4619 | { |
| 4620 | }; |
| 4621 | |
| 4622 | template <class _Tp> |
| 4623 | struct _LIBCPP_TEMPLATE_VIS is_nothrow_swappable |
| 4624 | : public conditional< |
| 4625 | __is_referenceable<_Tp>::value, |
| 4626 | is_nothrow_swappable_with< |
| 4627 | typename add_lvalue_reference<_Tp>::type, |
| 4628 | typename add_lvalue_reference<_Tp>::type>, |
| 4629 | false_type |
| 4630 | >::type |
| 4631 | { |
| 4632 | }; |
| 4633 | |
| 4634 | template <class _Tp, class _Up> |
| 4635 | _LIBCPP_INLINE_VAR constexpr bool is_swappable_with_v |
| 4636 | = is_swappable_with<_Tp, _Up>::value; |
| 4637 | |
| 4638 | template <class _Tp> |
| 4639 | _LIBCPP_INLINE_VAR constexpr bool is_swappable_v |
| 4640 | = is_swappable<_Tp>::value; |
| 4641 | |
| 4642 | template <class _Tp, class _Up> |
| 4643 | _LIBCPP_INLINE_VAR constexpr bool is_nothrow_swappable_with_v |
| 4644 | = is_nothrow_swappable_with<_Tp, _Up>::value; |
| 4645 | |
| 4646 | template <class _Tp> |
| 4647 | _LIBCPP_INLINE_VAR constexpr bool is_nothrow_swappable_v |
| 4648 | = is_nothrow_swappable<_Tp>::value; |
| 4649 | |
| 4650 | #endif // _LIBCPP_STD_VER > 14 |
| 4651 | |
| 4652 | #ifdef _LIBCPP_UNDERLYING_TYPE |
| 4653 | |
| 4654 | template <class _Tp> |
| 4655 | struct underlying_type |
| 4656 | { |
| 4657 | typedef _LIBCPP_UNDERLYING_TYPE(_Tp) type; |
| 4658 | }; |
| 4659 | |
| 4660 | #if _LIBCPP_STD_VER > 11 |
| 4661 | template <class _Tp> using underlying_type_t = typename underlying_type<_Tp>::type; |
| 4662 | #endif |
| 4663 | |
| 4664 | #else // _LIBCPP_UNDERLYING_TYPE |
| 4665 | |
| 4666 | template <class _Tp, bool _Support = false> |
| 4667 | struct underlying_type |
| 4668 | { |
| 4669 | static_assert(_Support, "The underyling_type trait requires compiler " |
| 4670 | "support. Either no such support exists or " |
| 4671 | "libc++ does not know how to use it."); |
| 4672 | }; |
| 4673 | |
| 4674 | #endif // _LIBCPP_UNDERLYING_TYPE |
| 4675 | |
| 4676 | |
| 4677 | template <class _Tp, bool = is_enum<_Tp>::value> |
| 4678 | struct __sfinae_underlying_type |
| 4679 | { |
| 4680 | typedef typename underlying_type<_Tp>::type type; |
| 4681 | typedef decltype(((type)1) + 0) __promoted_type; |
| 4682 | }; |
| 4683 | |
| 4684 | template <class _Tp> |
| 4685 | struct __sfinae_underlying_type<_Tp, false> {}; |
| 4686 | |
| 4687 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4688 | int __convert_to_integral(int __val) { return __val; } |
| 4689 | |
| 4690 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4691 | unsigned __convert_to_integral(unsigned __val) { return __val; } |
| 4692 | |
| 4693 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4694 | long __convert_to_integral(long __val) { return __val; } |
| 4695 | |
| 4696 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4697 | unsigned long __convert_to_integral(unsigned long __val) { return __val; } |
| 4698 | |
| 4699 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4700 | long long __convert_to_integral(long long __val) { return __val; } |
| 4701 | |
| 4702 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4703 | unsigned long long __convert_to_integral(unsigned long long __val) {return __val; } |
| 4704 | |
| 4705 | template<typename _Fp> |
| 4706 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4707 | typename enable_if<is_floating_point<_Fp>::value, long long>::type |
| 4708 | __convert_to_integral(_Fp __val) { return __val; } |
| 4709 | |
| 4710 | #ifndef _LIBCPP_HAS_NO_INT128 |
| 4711 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4712 | __int128_t __convert_to_integral(__int128_t __val) { return __val; } |
| 4713 | |
| 4714 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4715 | __uint128_t __convert_to_integral(__uint128_t __val) { return __val; } |
| 4716 | #endif |
| 4717 | |
| 4718 | template <class _Tp> |
| 4719 | inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR |
| 4720 | typename __sfinae_underlying_type<_Tp>::__promoted_type |
| 4721 | __convert_to_integral(_Tp __val) { return __val; } |
| 4722 | |
| 4723 | #ifndef _LIBCPP_CXX03_LANG |
| 4724 | |
| 4725 | template <class _Tp> |
| 4726 | struct __has_operator_addressof_member_imp |
| 4727 | { |
| 4728 | template <class _Up> |
| 4729 | static auto __test(int) |
| 4730 | -> typename __select_2nd<decltype(_VSTD::declval<_Up>().operator&()), true_type>::type; |
| 4731 | template <class> |
| 4732 | static auto __test(long) -> false_type; |
| 4733 | |
| 4734 | static const bool value = decltype(__test<_Tp>(0))::value; |
| 4735 | }; |
| 4736 | |
| 4737 | template <class _Tp> |
| 4738 | struct __has_operator_addressof_free_imp |
| 4739 | { |
| 4740 | template <class _Up> |
| 4741 | static auto __test(int) |
| 4742 | -> typename __select_2nd<decltype(operator&(_VSTD::declval<_Up>())), true_type>::type; |
| 4743 | template <class> |
| 4744 | static auto __test(long) -> false_type; |
| 4745 | |
| 4746 | static const bool value = decltype(__test<_Tp>(0))::value; |
| 4747 | }; |
| 4748 | |
| 4749 | template <class _Tp> |
| 4750 | struct __has_operator_addressof |
| 4751 | : public integral_constant<bool, __has_operator_addressof_member_imp<_Tp>::value |
| 4752 | || __has_operator_addressof_free_imp<_Tp>::value> |
| 4753 | {}; |
| 4754 | |
| 4755 | #endif // _LIBCPP_CXX03_LANG |
| 4756 | |
| 4757 | #if _LIBCPP_STD_VER > 14 |
| 4758 | |
| 4759 | template <class...> using void_t = void; |
| 4760 | |
| 4761 | # ifndef _LIBCPP_HAS_NO_VARIADICS |
| 4762 | template <class... _Args> |
| 4763 | struct conjunction : __and_<_Args...> {}; |
| 4764 | template<class... _Args> |
| 4765 | _LIBCPP_INLINE_VAR constexpr bool conjunction_v |
| 4766 | = conjunction<_Args...>::value; |
| 4767 | |
| 4768 | template <class... _Args> |
| 4769 | struct disjunction : __or_<_Args...> {}; |
| 4770 | template<class... _Args> |
| 4771 | _LIBCPP_INLINE_VAR constexpr bool disjunction_v |
| 4772 | = disjunction<_Args...>::value; |
| 4773 | |
| 4774 | template <class _Tp> |
| 4775 | struct negation : __not_<_Tp> {}; |
| 4776 | template<class _Tp> |
| 4777 | _LIBCPP_INLINE_VAR constexpr bool negation_v |
| 4778 | = negation<_Tp>::value; |
| 4779 | # endif // _LIBCPP_HAS_NO_VARIADICS |
| 4780 | #endif // _LIBCPP_STD_VER > 14 |
| 4781 | |
| 4782 | // These traits are used in __tree and __hash_table |
| 4783 | #ifndef _LIBCPP_CXX03_LANG |
| 4784 | struct __extract_key_fail_tag {}; |
| 4785 | struct __extract_key_self_tag {}; |
| 4786 | struct __extract_key_first_tag {}; |
| 4787 | |
| 4788 | template <class _ValTy, class _Key, |
| 4789 | class _RawValTy = typename __unconstref<_ValTy>::type> |
| 4790 | struct __can_extract_key |
| 4791 | : conditional<is_same<_RawValTy, _Key>::value, __extract_key_self_tag, |
| 4792 | __extract_key_fail_tag>::type {}; |
| 4793 | |
| 4794 | template <class _Pair, class _Key, class _First, class _Second> |
| 4795 | struct __can_extract_key<_Pair, _Key, pair<_First, _Second>> |
| 4796 | : conditional<is_same<typename remove_const<_First>::type, _Key>::value, |
| 4797 | __extract_key_first_tag, __extract_key_fail_tag>::type {}; |
| 4798 | |
| 4799 | // __can_extract_map_key uses true_type/false_type instead of the tags. |
| 4800 | // It returns true if _Key != _ContainerValueTy (the container is a map not a set) |
| 4801 | // and _ValTy == _Key. |
| 4802 | template <class _ValTy, class _Key, class _ContainerValueTy, |
| 4803 | class _RawValTy = typename __unconstref<_ValTy>::type> |
| 4804 | struct __can_extract_map_key |
| 4805 | : integral_constant<bool, is_same<_RawValTy, _Key>::value> {}; |
| 4806 | |
| 4807 | // This specialization returns __extract_key_fail_tag for non-map containers |
| 4808 | // because _Key == _ContainerValueTy |
| 4809 | template <class _ValTy, class _Key, class _RawValTy> |
| 4810 | struct __can_extract_map_key<_ValTy, _Key, _Key, _RawValTy> |
| 4811 | : false_type {}; |
| 4812 | |
| 4813 | #endif |
| 4814 | |
| 4815 | #if _LIBCPP_STD_VER > 17 |
| 4816 | enum class endian |
| 4817 | { |
| 4818 | little = 0xDEAD, |
| 4819 | big = 0xFACE, |
| 4820 | #if defined(_LIBCPP_LITTLE_ENDIAN) |
| 4821 | native = little |
| 4822 | #elif defined(_LIBCPP_BIG_ENDIAN) |
| 4823 | native = big |
| 4824 | #else |
| 4825 | native = 0xCAFE |
| 4826 | #endif |
| 4827 | }; |
| 4828 | #endif |
| 4829 | |
| 4830 | _LIBCPP_END_NAMESPACE_STD |
| 4831 | |
| 4832 | #if _LIBCPP_STD_VER > 14 |
| 4833 | // std::byte |
| 4834 | namespace std // purposefully not versioned |
| 4835 | { |
| 4836 | template <class _Integer> |
| 4837 | constexpr typename enable_if<is_integral_v<_Integer>, byte>::type & |
| 4838 | operator<<=(byte& __lhs, _Integer __shift) noexcept |
| 4839 | { return __lhs = __lhs << __shift; } |
| 4840 | |
| 4841 | template <class _Integer> |
| 4842 | constexpr typename enable_if<is_integral_v<_Integer>, byte>::type |
| 4843 | operator<< (byte __lhs, _Integer __shift) noexcept |
| 4844 | { return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) << __shift)); } |
| 4845 | |
| 4846 | template <class _Integer> |
| 4847 | constexpr typename enable_if<is_integral_v<_Integer>, byte>::type & |
| 4848 | operator>>=(byte& __lhs, _Integer __shift) noexcept |
| 4849 | { return __lhs = __lhs >> __shift; } |
| 4850 | |
| 4851 | template <class _Integer> |
| 4852 | constexpr typename enable_if<is_integral_v<_Integer>, byte>::type |
| 4853 | operator>> (byte __lhs, _Integer __shift) noexcept |
| 4854 | { return static_cast<byte>(static_cast<unsigned char>(static_cast<unsigned int>(__lhs) >> __shift)); } |
| 4855 | |
| 4856 | template <class _Integer> |
| 4857 | constexpr typename enable_if<is_integral_v<_Integer>, _Integer>::type |
| 4858 | to_integer(byte __b) noexcept { return static_cast<_Integer>(__b); } |
| 4859 | |
| 4860 | } |
| 4861 | #endif |
| 4862 | |
| 4863 | #endif // _LIBCPP_TYPE_TRAITS |