Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 1 | // -*- C++ -*- |
| 2 | //===------------------------------ any -----------------------------------===// |
| 3 | // |
| 4 | // The LLVM Compiler Infrastructure |
| 5 | // |
| 6 | // This file is distributed under the University of Illinois Open Source |
| 7 | // License. See LICENSE.TXT for details. |
| 8 | // |
| 9 | //===----------------------------------------------------------------------===// |
| 10 | |
| 11 | #ifndef _LIBCPP_EXPERIMENTAL_ANY |
| 12 | #define _LIBCPP_EXPERIMENTAL_ANY |
| 13 | |
| 14 | /* |
| 15 | experimental/any synopsis |
| 16 | |
| 17 | namespace std { |
| 18 | namespace experimental { |
| 19 | inline namespace fundamentals_v1 { |
| 20 | |
| 21 | class bad_any_cast : public bad_cast |
| 22 | { |
| 23 | public: |
| 24 | virtual const char* what() const noexcept; |
| 25 | }; |
| 26 | |
| 27 | class any |
| 28 | { |
| 29 | public: |
| 30 | |
| 31 | // 6.3.1 any construct/destruct |
| 32 | any() noexcept; |
| 33 | |
| 34 | any(const any& other); |
| 35 | any(any&& other) noexcept; |
| 36 | |
| 37 | template <class ValueType> |
| 38 | any(ValueType&& value); |
| 39 | |
| 40 | ~any(); |
| 41 | |
| 42 | // 6.3.2 any assignments |
| 43 | any& operator=(const any& rhs); |
| 44 | any& operator=(any&& rhs) noexcept; |
| 45 | |
| 46 | template <class ValueType> |
| 47 | any& operator=(ValueType&& rhs); |
| 48 | |
| 49 | // 6.3.3 any modifiers |
| 50 | void clear() noexcept; |
| 51 | void swap(any& rhs) noexcept; |
| 52 | |
| 53 | // 6.3.4 any observers |
| 54 | bool empty() const noexcept; |
| 55 | const type_info& type() const noexcept; |
| 56 | }; |
| 57 | |
| 58 | // 6.4 Non-member functions |
| 59 | void swap(any& x, any& y) noexcept; |
| 60 | |
| 61 | template<class ValueType> |
| 62 | ValueType any_cast(const any& operand); |
| 63 | template<class ValueType> |
| 64 | ValueType any_cast(any& operand); |
| 65 | template<class ValueType> |
| 66 | ValueType any_cast(any&& operand); |
| 67 | |
| 68 | template<class ValueType> |
| 69 | const ValueType* any_cast(const any* operand) noexcept; |
| 70 | template<class ValueType> |
| 71 | ValueType* any_cast(any* operand) noexcept; |
| 72 | |
| 73 | } // namespace fundamentals_v1 |
| 74 | } // namespace experimental |
| 75 | } // namespace std |
| 76 | |
| 77 | */ |
| 78 | |
| 79 | #include <experimental/__config> |
| 80 | #include <memory> |
| 81 | #include <new> |
| 82 | #include <typeinfo> |
| 83 | #include <type_traits> |
| 84 | #include <cstdlib> |
| 85 | |
| 86 | #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| 87 | #pragma GCC system_header |
| 88 | #endif |
| 89 | |
| 90 | _LIBCPP_BEGIN_NAMESPACE_LFTS |
| 91 | |
| 92 | class _LIBCPP_EXCEPTION_ABI bad_any_cast : public bad_cast |
| 93 | { |
| 94 | public: |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 95 | //TODO(EricWF) Enable or delete these. |
| 96 | //bad_any_cast() _NOEXCEPT; |
| 97 | //virtual ~bad_any_cast() _NOEXCEPT; |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 98 | virtual const char* what() const _NOEXCEPT; |
| 99 | }; |
| 100 | |
| 101 | #if _LIBCPP_STD_VER > 11 // C++ > 11 |
| 102 | |
| 103 | _LIBCPP_NORETURN _LIBCPP_INLINE_VISIBILITY |
| 104 | inline void __throw_bad_any_cast() |
| 105 | { |
| 106 | #ifndef _LIBCPP_NO_EXCEPTIONS |
| 107 | throw bad_any_cast(); |
| 108 | #else |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 109 | _VSTD::abort(); |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 110 | #endif |
| 111 | } |
| 112 | |
| 113 | // Forward declarations |
| 114 | class any; |
| 115 | |
| 116 | template <class _ValueType> |
| 117 | typename add_pointer<typename add_const<_ValueType>::type>::type |
| 118 | any_cast(any const *) _NOEXCEPT; |
| 119 | |
| 120 | template <class _ValueType> |
| 121 | typename add_pointer<_ValueType>::type |
| 122 | any_cast(any *) _NOEXCEPT; |
| 123 | |
| 124 | namespace __any_imp |
| 125 | { |
| 126 | typedef typename aligned_storage<3*sizeof(void*), alignment_of<void*>::value>::type |
| 127 | _Buffer; |
| 128 | |
| 129 | template <class _Tp> |
| 130 | struct _IsSmallObject |
| 131 | : public integral_constant<bool |
| 132 | , sizeof(_Tp) <= sizeof(_Buffer) |
| 133 | && alignment_of<_Buffer>::value |
| 134 | % alignment_of<_Tp>::value == 0 |
| 135 | && is_nothrow_move_constructible<_Tp>::value |
| 136 | > |
| 137 | {}; |
| 138 | |
| 139 | enum class _Action |
| 140 | { |
| 141 | _Destroy, |
| 142 | _Copy, |
| 143 | _Move, |
| 144 | _Get, |
| 145 | _TypeInfo |
| 146 | }; |
| 147 | |
| 148 | template <class _Tp> |
| 149 | struct _SmallHandler; |
| 150 | |
| 151 | template <class _Tp> |
| 152 | struct _LargeHandler; |
| 153 | |
| 154 | template <class _Tp> |
| 155 | using _Handler = typename conditional<_IsSmallObject<_Tp>::value |
| 156 | , _SmallHandler<_Tp> |
| 157 | , _LargeHandler<_Tp> |
| 158 | >::type; |
| 159 | template <class _ValueType> |
| 160 | using _EnableIfNotAny = typename |
| 161 | enable_if< |
| 162 | !is_same<typename decay<_ValueType>::type, any>::value |
| 163 | >::type; |
| 164 | |
| 165 | } // namespace __any_imp |
| 166 | |
| 167 | class any |
| 168 | { |
| 169 | public: |
| 170 | // 6.3.1 any construct/destruct |
| 171 | _LIBCPP_INLINE_VISIBILITY |
| 172 | any() _NOEXCEPT : __h(nullptr) {} |
| 173 | |
| 174 | _LIBCPP_INLINE_VISIBILITY |
| 175 | any(any const & __other) : __h(nullptr) |
| 176 | { |
| 177 | if (__other.__h) __other.__call(_Action::_Copy, this); |
| 178 | } |
| 179 | |
| 180 | _LIBCPP_INLINE_VISIBILITY |
| 181 | any(any && __other) _NOEXCEPT : __h(nullptr) |
| 182 | { |
| 183 | if (__other.__h) __other.__call(_Action::_Move, this); |
| 184 | } |
| 185 | |
| 186 | template < |
| 187 | class _ValueType |
| 188 | , class = __any_imp::_EnableIfNotAny<_ValueType> |
| 189 | > |
| 190 | any(_ValueType && __value); |
| 191 | |
| 192 | _LIBCPP_INLINE_VISIBILITY |
| 193 | ~any() |
| 194 | { |
| 195 | this->clear(); |
| 196 | } |
| 197 | |
| 198 | // 6.3.2 any assignments |
| 199 | _LIBCPP_INLINE_VISIBILITY |
| 200 | any & operator=(any const & __rhs) |
| 201 | { |
| 202 | any(__rhs).swap(*this); |
| 203 | return *this; |
| 204 | } |
| 205 | |
| 206 | _LIBCPP_INLINE_VISIBILITY |
| 207 | any & operator=(any && __rhs) _NOEXCEPT |
| 208 | { |
| 209 | any(_VSTD::move(__rhs)).swap(*this); |
| 210 | return *this; |
| 211 | } |
| 212 | |
| 213 | template < |
| 214 | class _ValueType |
| 215 | , class = __any_imp::_EnableIfNotAny<_ValueType> |
| 216 | > |
| 217 | any & operator=(_ValueType && __rhs); |
| 218 | |
| 219 | // 6.3.3 any modifiers |
| 220 | _LIBCPP_INLINE_VISIBILITY |
| 221 | void clear() _NOEXCEPT |
| 222 | { |
| 223 | if (__h) this->__call(_Action::_Destroy); |
| 224 | } |
| 225 | |
| 226 | void swap(any & __rhs) _NOEXCEPT; |
| 227 | |
| 228 | // 6.3.4 any observers |
| 229 | _LIBCPP_INLINE_VISIBILITY |
| 230 | bool empty() const _NOEXCEPT |
| 231 | { |
| 232 | return __h == nullptr; |
| 233 | } |
| 234 | |
| 235 | #if !defined(_LIBCPP_NO_RTTI) |
| 236 | _LIBCPP_INLINE_VISIBILITY |
| 237 | const type_info & type() const _NOEXCEPT |
| 238 | { |
| 239 | if (__h) { |
| 240 | return *static_cast<type_info const *>(this->__call(_Action::_TypeInfo)); |
| 241 | } else { |
| 242 | return typeid(void); |
| 243 | } |
| 244 | } |
| 245 | #endif |
| 246 | |
| 247 | private: |
| 248 | typedef __any_imp::_Action _Action; |
| 249 | |
| 250 | typedef void* (*_HandleFuncPtr)(_Action, any const *, any *, const type_info *); |
| 251 | |
| 252 | union _Storage |
| 253 | { |
| 254 | void * __ptr; |
| 255 | __any_imp::_Buffer __buf; |
| 256 | }; |
| 257 | |
| 258 | _LIBCPP_ALWAYS_INLINE |
| 259 | void * __call(_Action __a, any * __other = nullptr, |
| 260 | type_info const * __info = nullptr) const |
| 261 | { |
| 262 | return __h(__a, this, __other, __info); |
| 263 | } |
| 264 | |
| 265 | _LIBCPP_ALWAYS_INLINE |
| 266 | void * __call(_Action __a, any * __other = nullptr, |
| 267 | type_info const * __info = nullptr) |
| 268 | { |
| 269 | return __h(__a, this, __other, __info); |
| 270 | } |
| 271 | |
| 272 | template <class> |
| 273 | friend struct __any_imp::_SmallHandler; |
| 274 | template <class> |
| 275 | friend struct __any_imp::_LargeHandler; |
| 276 | |
| 277 | template <class _ValueType> |
| 278 | friend typename add_pointer<typename add_const<_ValueType>::type>::type |
| 279 | any_cast(any const *) _NOEXCEPT; |
| 280 | |
| 281 | template <class _ValueType> |
| 282 | friend typename add_pointer<_ValueType>::type |
| 283 | any_cast(any *) _NOEXCEPT; |
| 284 | |
| 285 | _HandleFuncPtr __h; |
| 286 | _Storage __s; |
| 287 | }; |
| 288 | |
| 289 | namespace __any_imp |
| 290 | { |
| 291 | |
| 292 | template <class _Tp> |
| 293 | struct _LIBCPP_TYPE_VIS_ONLY _SmallHandler |
| 294 | { |
| 295 | _LIBCPP_INLINE_VISIBILITY |
| 296 | static void* __handle(_Action __act, any const * __this, any * __other, |
| 297 | type_info const * __info) |
| 298 | { |
| 299 | switch (__act) |
| 300 | { |
| 301 | case _Action::_Destroy: |
| 302 | __destroy(const_cast<any &>(*__this)); |
| 303 | return nullptr; |
| 304 | case _Action::_Copy: |
| 305 | __copy(*__this, *__other); |
| 306 | return nullptr; |
| 307 | case _Action::_Move: |
| 308 | __move(const_cast<any &>(*__this), *__other); |
| 309 | return nullptr; |
| 310 | case _Action::_Get: |
| 311 | return __get(const_cast<any &>(*__this), __info); |
| 312 | case _Action::_TypeInfo: |
| 313 | return __type_info(); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | template <class _Up> |
| 318 | _LIBCPP_INLINE_VISIBILITY |
| 319 | static void __create(any & __dest, _Up && __v) |
| 320 | { |
| 321 | ::new (static_cast<void*>(&__dest.__s.__buf)) _Tp(_VSTD::forward<_Up>(__v)); |
| 322 | __dest.__h = &_SmallHandler::__handle; |
| 323 | } |
| 324 | |
| 325 | private: |
| 326 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 327 | static void __destroy(any & __this) |
| 328 | { |
| 329 | _Tp & __value = *static_cast<_Tp *>(static_cast<void*>(&__this.__s.__buf)); |
| 330 | __value.~_Tp(); |
| 331 | __this.__h = nullptr; |
| 332 | } |
| 333 | |
| 334 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 335 | static void __copy(any const & __this, any & __dest) |
| 336 | { |
| 337 | _SmallHandler::__create(__dest, *static_cast<_Tp const *>( |
| 338 | static_cast<void const *>(&__this.__s.__buf))); |
| 339 | } |
| 340 | |
| 341 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 342 | static void __move(any & __this, any & __dest) |
| 343 | { |
| 344 | _SmallHandler::__create(__dest, _VSTD::move( |
| 345 | *static_cast<_Tp*>(static_cast<void*>(&__this.__s.__buf)))); |
| 346 | __destroy(__this); |
| 347 | } |
| 348 | |
| 349 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 350 | static void* __get(any & __this, type_info const * __info) |
| 351 | { |
| 352 | #if !defined(_LIBCPP_NO_RTTI) |
| 353 | if (typeid(_Tp) == *__info) { |
| 354 | return static_cast<void*>(&__this.__s.__buf); |
| 355 | } |
| 356 | return nullptr; |
| 357 | #else |
| 358 | return static_cast<void*>(&__this.__s.__buf); |
| 359 | #endif |
| 360 | } |
| 361 | |
| 362 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 363 | static void* __type_info() |
| 364 | { |
| 365 | #if !defined(_LIBCPP_NO_RTTI) |
| 366 | return const_cast<void*>(static_cast<void const *>(&typeid(_Tp))); |
| 367 | #else |
| 368 | return nullptr; |
| 369 | #endif |
| 370 | } |
| 371 | }; |
| 372 | |
| 373 | template <class _Tp> |
| 374 | struct _LIBCPP_TYPE_VIS_ONLY _LargeHandler |
| 375 | { |
| 376 | _LIBCPP_INLINE_VISIBILITY |
| 377 | static void* __handle(_Action __act, any const * __this, any * __other, |
| 378 | type_info const * __info) |
| 379 | { |
| 380 | switch (__act) |
| 381 | { |
| 382 | case _Action::_Destroy: |
| 383 | __destroy(const_cast<any &>(*__this)); |
| 384 | return nullptr; |
| 385 | case _Action::_Copy: |
| 386 | __copy(*__this, *__other); |
| 387 | return nullptr; |
| 388 | case _Action::_Move: |
| 389 | __move(const_cast<any &>(*__this), *__other); |
| 390 | return nullptr; |
| 391 | case _Action::_Get: |
| 392 | return __get(const_cast<any &>(*__this), __info); |
| 393 | case _Action::_TypeInfo: |
| 394 | return __type_info(); |
| 395 | } |
| 396 | } |
| 397 | |
| 398 | template <class _Up> |
| 399 | _LIBCPP_INLINE_VISIBILITY |
| 400 | static void __create(any & __dest, _Up && __v) |
| 401 | { |
| 402 | typedef allocator<_Tp> _Alloc; |
| 403 | typedef __allocator_destructor<_Alloc> _Dp; |
| 404 | _Alloc __a; |
| 405 | unique_ptr<_Tp, _Dp> __hold(__a.allocate(1), _Dp(__a, 1)); |
| 406 | ::new ((void*)__hold.get()) _Tp(_VSTD::forward<_Up>(__v)); |
| 407 | __dest.__s.__ptr = __hold.release(); |
| 408 | __dest.__h = &_LargeHandler::__handle; |
| 409 | } |
| 410 | |
| 411 | private: |
| 412 | |
| 413 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 414 | static void __destroy(any & __this) |
| 415 | { |
| 416 | delete static_cast<_Tp*>(__this.__s.__ptr); |
| 417 | __this.__h = nullptr; |
| 418 | } |
| 419 | |
| 420 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 421 | static void __copy(any const & __this, any & __dest) |
| 422 | { |
| 423 | _LargeHandler::__create(__dest, *static_cast<_Tp const *>(__this.__s.__ptr)); |
| 424 | } |
| 425 | |
| 426 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 427 | static void __move(any & __this, any & __dest) |
| 428 | { |
| 429 | __dest.__s.__ptr = __this.__s.__ptr; |
| 430 | __dest.__h = &_LargeHandler::__handle; |
| 431 | __this.__h = nullptr; |
| 432 | } |
| 433 | |
| 434 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 435 | static void* __get(any & __this, type_info const * __info) |
| 436 | { |
| 437 | #if !defined(_LIBCPP_NO_RTTI) |
| 438 | if (typeid(_Tp) == *__info) { |
| 439 | return static_cast<void*>(__this.__s.__ptr); |
| 440 | } |
| 441 | return nullptr; |
| 442 | #else |
| 443 | return static_cast<void*>(__this.__s.__ptr); |
| 444 | #endif |
| 445 | } |
| 446 | |
| 447 | _LIBCPP_ALWAYS_INLINE _LIBCPP_INLINE_VISIBILITY |
| 448 | static void* __type_info() |
| 449 | { |
| 450 | #if !defined(_LIBCPP_NO_RTTI) |
| 451 | return const_cast<void*>(static_cast<void const *>(&typeid(_Tp))); |
| 452 | #else |
| 453 | return nullptr; |
| 454 | #endif |
| 455 | } |
| 456 | }; |
| 457 | |
| 458 | } // namespace __any_imp |
| 459 | |
| 460 | |
| 461 | template <class _ValueType, class> |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 462 | _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 463 | any::any(_ValueType && __v) : __h(nullptr) |
| 464 | { |
| 465 | typedef typename decay<_ValueType>::type _Tp; |
| 466 | static_assert(is_copy_constructible<_Tp>::value, |
| 467 | "_ValueType must be CopyConstructible."); |
| 468 | typedef __any_imp::_Handler<_Tp> _HandlerType; |
| 469 | _HandlerType::__create(*this, _VSTD::forward<_ValueType>(__v)); |
| 470 | } |
| 471 | |
| 472 | template <class _ValueType, class> |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 473 | _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 474 | any & any::operator=(_ValueType && __v) |
| 475 | { |
| 476 | typedef typename decay<_ValueType>::type _Tp; |
| 477 | static_assert(is_copy_constructible<_Tp>::value, |
| 478 | "_ValueType must be CopyConstructible."); |
| 479 | any(_VSTD::forward<_ValueType>(__v)).swap(*this); |
| 480 | return *this; |
| 481 | } |
| 482 | |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 483 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 484 | void any::swap(any & __rhs) _NOEXCEPT |
| 485 | { |
| 486 | if (__h && __rhs.__h) { |
| 487 | any __tmp; |
| 488 | __rhs.__call(_Action::_Move, &__tmp); |
| 489 | this->__call(_Action::_Move, &__rhs); |
| 490 | __tmp.__call(_Action::_Move, this); |
| 491 | } |
| 492 | else if (__h) { |
| 493 | this->__call(_Action::_Move, &__rhs); |
| 494 | } |
| 495 | else if (__rhs.__h) { |
| 496 | __rhs.__call(_Action::_Move, this); |
| 497 | } |
| 498 | } |
| 499 | |
| 500 | // 6.4 Non-member functions |
| 501 | |
| 502 | inline _LIBCPP_INLINE_VISIBILITY |
| 503 | void swap(any & __lhs, any & __rhs) _NOEXCEPT |
| 504 | { |
| 505 | __lhs.swap(__rhs); |
| 506 | } |
| 507 | |
| 508 | template <class _ValueType> |
| 509 | _LIBCPP_INLINE_VISIBILITY |
| 510 | _ValueType any_cast(any const & __v) |
| 511 | { |
| 512 | static_assert( |
| 513 | is_reference<_ValueType>::value |
| 514 | || is_copy_constructible<_ValueType>::value, |
| 515 | "_ValueType is required to be a reference or a CopyConstructible type."); |
| 516 | typedef typename add_const<typename remove_reference<_ValueType>::type>::type |
| 517 | _Tp; |
| 518 | _Tp * __tmp = any_cast<_Tp>(&__v); |
| 519 | if (__tmp == nullptr) |
| 520 | __throw_bad_any_cast(); |
| 521 | return *__tmp; |
| 522 | } |
| 523 | |
| 524 | template <class _ValueType> |
| 525 | _LIBCPP_INLINE_VISIBILITY |
| 526 | _ValueType any_cast(any & __v) |
| 527 | { |
| 528 | static_assert( |
| 529 | is_reference<_ValueType>::value |
| 530 | || is_copy_constructible<_ValueType>::value, |
| 531 | "_ValueType is required to be a reference or a CopyConstructible type."); |
| 532 | typedef typename remove_reference<_ValueType>::type _Tp; |
| 533 | _Tp * __tmp = any_cast<_Tp>(&__v); |
| 534 | if (__tmp == nullptr) |
| 535 | __throw_bad_any_cast(); |
| 536 | return *__tmp; |
| 537 | } |
| 538 | |
| 539 | template <class _ValueType> |
| 540 | _LIBCPP_INLINE_VISIBILITY |
| 541 | _ValueType any_cast(any && __v) |
| 542 | { |
| 543 | static_assert( |
| 544 | is_reference<_ValueType>::value |
| 545 | || is_copy_constructible<_ValueType>::value, |
| 546 | "_ValueType is required to be a reference or a CopyConstructible type."); |
| 547 | typedef typename remove_reference<_ValueType>::type _Tp; |
| 548 | _Tp * __tmp = any_cast<_Tp>(&__v); |
| 549 | if (__tmp == nullptr) |
| 550 | __throw_bad_any_cast(); |
| 551 | return *__tmp; |
| 552 | } |
| 553 | |
| 554 | template <class _ValueType> |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 555 | inline _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 556 | typename add_pointer<typename add_const<_ValueType>::type>::type |
| 557 | any_cast(any const * __any) _NOEXCEPT |
| 558 | { |
| 559 | static_assert(!is_reference<_ValueType>::value, |
| 560 | "_ValueType may not be a reference."); |
| 561 | return any_cast<_ValueType>(const_cast<any *>(__any)); |
| 562 | } |
| 563 | |
| 564 | template <class _ValueType> |
Dan Albert | 1d4a1ed | 2016-05-25 22:36:09 -0700 | [diff] [blame^] | 565 | _LIBCPP_INLINE_VISIBILITY |
Eric Fiselier | 7175a07 | 2015-07-31 02:24:58 +0000 | [diff] [blame] | 566 | typename add_pointer<_ValueType>::type |
| 567 | any_cast(any * __any) _NOEXCEPT |
| 568 | { |
| 569 | using __any_imp::_Action; |
| 570 | static_assert(!is_reference<_ValueType>::value, |
| 571 | "_ValueType may not be a reference."); |
| 572 | typedef typename add_pointer<_ValueType>::type _ReturnType; |
| 573 | if (__any && __any->__h) { |
| 574 | |
| 575 | return static_cast<_ReturnType>( |
| 576 | __any->__call(_Action::_Get, nullptr, |
| 577 | #if !defined(_LIBCPP_NO_RTTI) |
| 578 | &typeid(_ValueType) |
| 579 | #else |
| 580 | nullptr |
| 581 | #endif |
| 582 | )); |
| 583 | |
| 584 | } |
| 585 | return nullptr; |
| 586 | } |
| 587 | |
| 588 | #endif // _LIBCPP_STD_VER > 11 |
| 589 | |
| 590 | _LIBCPP_END_NAMESPACE_LFTS |
| 591 | |
| 592 | #endif // _LIBCPP_EXPERIMENTAL_ANY |