1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_SCOPED_ALLOCATOR 11#define _LIBCPP_SCOPED_ALLOCATOR 12 13/* 14 scoped_allocator synopsis 15 16namespace std 17{ 18 19template <class OuterAlloc, class... InnerAllocs> 20class scoped_allocator_adaptor : public OuterAlloc 21{ 22 typedef allocator_traits<OuterAlloc> OuterTraits; // exposition only 23 scoped_allocator_adaptor<InnerAllocs...> inner; // exposition only 24public: 25 26 typedef OuterAlloc outer_allocator_type; 27 typedef see below inner_allocator_type; 28 29 typedef typename OuterTraits::value_type value_type; 30 typedef typename OuterTraits::size_type size_type; 31 typedef typename OuterTraits::difference_type difference_type; 32 typedef typename OuterTraits::pointer pointer; 33 typedef typename OuterTraits::const_pointer const_pointer; 34 typedef typename OuterTraits::void_pointer void_pointer; 35 typedef typename OuterTraits::const_void_pointer const_void_pointer; 36 37 typedef see below propagate_on_container_copy_assignment; 38 typedef see below propagate_on_container_move_assignment; 39 typedef see below propagate_on_container_swap; 40 typedef see below is_always_equal; 41 42 template <class Tp> 43 struct rebind 44 { 45 typedef scoped_allocator_adaptor< 46 OuterTraits::template rebind_alloc<Tp>, InnerAllocs...> other; 47 }; 48 49 scoped_allocator_adaptor(); 50 template <class OuterA2> 51 scoped_allocator_adaptor(OuterA2&& outerAlloc, 52 const InnerAllocs&... innerAllocs) noexcept; 53 scoped_allocator_adaptor(const scoped_allocator_adaptor& other) noexcept; 54 scoped_allocator_adaptor(scoped_allocator_adaptor&& other) noexcept; 55 template <class OuterA2> 56 scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& other) noexcept; 57 template <class OuterA2> 58 scoped_allocator_adaptor(const scoped_allocator_adaptor<OuterA2, InnerAllocs...>&& other) noexcept; 59 60 scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor&) = default; 61 scoped_allocator_adaptor& operator=(scoped_allocator_adaptor&&) = default; 62 ~scoped_allocator_adaptor(); 63 64 inner_allocator_type& inner_allocator() noexcept; 65 const inner_allocator_type& inner_allocator() const noexcept; 66 67 outer_allocator_type& outer_allocator() noexcept; 68 const outer_allocator_type& outer_allocator() const noexcept; 69 70 pointer allocate(size_type n); // [[nodiscard]] in C++20 71 pointer allocate(size_type n, const_void_pointer hint); // [[nodiscard]] in C++20 72 void deallocate(pointer p, size_type n) noexcept; 73 74 size_type max_size() const; 75 template <class T, class... Args> void construct(T* p, Args&& args); 76 template <class T1, class T2, class... Args1, class... Args2> 77 void construct(pair<T1, T2>* p, piecewise_construct t, tuple<Args1...> x, 78 tuple<Args2...> y); 79 template <class T1, class T2> 80 void construct(pair<T1, T2>* p); 81 template <class T1, class T2, class U, class V> 82 void construct(pair<T1, T2>* p, U&& x, V&& y); 83 template <class T1, class T2, class U, class V> 84 void construct(pair<T1, T2>* p, const pair<U, V>& x); 85 template <class T1, class T2, class U, class V> 86 void construct(pair<T1, T2>* p, pair<U, V>&& x); 87 template <class T> void destroy(T* p); 88 89 template <class T> void destroy(T* p) noexcept; 90 91 scoped_allocator_adaptor select_on_container_copy_construction() const noexcept; 92}; 93 94template<class OuterAlloc, class... InnerAllocs> 95 scoped_allocator_adaptor(OuterAlloc, InnerAllocs...) 96 -> scoped_allocator_adaptor<OuterAlloc, InnerAllocs...>; 97 98template <class OuterA1, class OuterA2, class... InnerAllocs> 99 bool 100 operator==(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a, 101 const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b) noexcept; 102 103template <class OuterA1, class OuterA2, class... InnerAllocs> 104 bool 105 operator!=(const scoped_allocator_adaptor<OuterA1, InnerAllocs...>& a, 106 const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& b) noexcept; // removed in C++20 107 108} // std 109 110*/ 111 112#include <__assert> // all public C++ headers provide the assertion handler 113#include <__config> 114#include <__memory/allocator_traits.h> 115#include <__memory/uses_allocator_construction.h> 116#include <__type_traits/common_type.h> 117#include <__type_traits/enable_if.h> 118#include <__type_traits/integral_constant.h> 119#include <__type_traits/is_constructible.h> 120#include <__type_traits/remove_reference.h> 121#include <__utility/declval.h> 122#include <__utility/forward.h> 123#include <__utility/move.h> 124#include <__utility/pair.h> 125#include <__utility/piecewise_construct.h> 126#include <tuple> 127#include <version> 128 129#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 130# pragma GCC system_header 131#endif 132 133_LIBCPP_PUSH_MACROS 134#include <__undef_macros> 135 136_LIBCPP_BEGIN_NAMESPACE_STD 137 138#if !defined(_LIBCPP_CXX03_LANG) 139 140// scoped_allocator_adaptor 141 142template <class... _Allocs> 143class scoped_allocator_adaptor; 144 145template <class... _Allocs> 146struct __get_poc_copy_assignment; 147 148template <class _A0> 149struct __get_poc_copy_assignment<_A0> { 150 static const bool value = allocator_traits<_A0>::propagate_on_container_copy_assignment::value; 151}; 152 153template <class _A0, class... _Allocs> 154struct __get_poc_copy_assignment<_A0, _Allocs...> { 155 static const bool value = allocator_traits<_A0>::propagate_on_container_copy_assignment::value || 156 __get_poc_copy_assignment<_Allocs...>::value; 157}; 158 159template <class... _Allocs> 160struct __get_poc_move_assignment; 161 162template <class _A0> 163struct __get_poc_move_assignment<_A0> { 164 static const bool value = allocator_traits<_A0>::propagate_on_container_move_assignment::value; 165}; 166 167template <class _A0, class... _Allocs> 168struct __get_poc_move_assignment<_A0, _Allocs...> { 169 static const bool value = allocator_traits<_A0>::propagate_on_container_move_assignment::value || 170 __get_poc_move_assignment<_Allocs...>::value; 171}; 172 173template <class... _Allocs> 174struct __get_poc_swap; 175 176template <class _A0> 177struct __get_poc_swap<_A0> { 178 static const bool value = allocator_traits<_A0>::propagate_on_container_swap::value; 179}; 180 181template <class _A0, class... _Allocs> 182struct __get_poc_swap<_A0, _Allocs...> { 183 static const bool value = 184 allocator_traits<_A0>::propagate_on_container_swap::value || __get_poc_swap<_Allocs...>::value; 185}; 186 187template <class... _Allocs> 188struct __get_is_always_equal; 189 190template <class _A0> 191struct __get_is_always_equal<_A0> { 192 static const bool value = allocator_traits<_A0>::is_always_equal::value; 193}; 194 195template <class _A0, class... _Allocs> 196struct __get_is_always_equal<_A0, _Allocs...> { 197 static const bool value = allocator_traits<_A0>::is_always_equal::value && __get_is_always_equal<_Allocs...>::value; 198}; 199 200template <class... _Allocs> 201class __scoped_allocator_storage; 202 203template <class _OuterAlloc, class... _InnerAllocs> 204class __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> : public _OuterAlloc { 205 typedef _OuterAlloc outer_allocator_type; 206 207protected: 208 typedef scoped_allocator_adaptor<_InnerAllocs...> inner_allocator_type; 209 210private: 211 inner_allocator_type __inner_; 212 213protected: 214 _LIBCPP_HIDE_FROM_ABI __scoped_allocator_storage() _NOEXCEPT {} 215 216 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 217 _LIBCPP_HIDE_FROM_ABI 218 __scoped_allocator_storage(_OuterA2&& __outer_alloc, const _InnerAllocs&... __inner_allocs) _NOEXCEPT 219 : outer_allocator_type(std::forward<_OuterA2>(__outer_alloc)), 220 __inner_(__inner_allocs...) {} 221 222 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, const _OuterA2&>::value, int> = 0> 223 _LIBCPP_HIDE_FROM_ABI 224 __scoped_allocator_storage(const __scoped_allocator_storage<_OuterA2, _InnerAllocs...>& __other) _NOEXCEPT 225 : outer_allocator_type(__other.outer_allocator()), 226 __inner_(__other.inner_allocator()) {} 227 228 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 229 _LIBCPP_HIDE_FROM_ABI 230 __scoped_allocator_storage(__scoped_allocator_storage<_OuterA2, _InnerAllocs...>&& __other) _NOEXCEPT 231 : outer_allocator_type(std::move(__other.outer_allocator())), 232 __inner_(std::move(__other.inner_allocator())) {} 233 234 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 235 _LIBCPP_HIDE_FROM_ABI __scoped_allocator_storage(_OuterA2&& __o, const inner_allocator_type& __i) _NOEXCEPT 236 : outer_allocator_type(std::forward<_OuterA2>(__o)), 237 __inner_(__i) {} 238 239 _LIBCPP_HIDE_FROM_ABI inner_allocator_type& inner_allocator() _NOEXCEPT { return __inner_; } 240 _LIBCPP_HIDE_FROM_ABI const inner_allocator_type& inner_allocator() const _NOEXCEPT { return __inner_; } 241 242 _LIBCPP_HIDE_FROM_ABI outer_allocator_type& outer_allocator() _NOEXCEPT { 243 return static_cast<outer_allocator_type&>(*this); 244 } 245 _LIBCPP_HIDE_FROM_ABI const outer_allocator_type& outer_allocator() const _NOEXCEPT { 246 return static_cast<const outer_allocator_type&>(*this); 247 } 248 249 scoped_allocator_adaptor<outer_allocator_type, _InnerAllocs...> _LIBCPP_HIDE_FROM_ABI 250 select_on_container_copy_construction() const _NOEXCEPT { 251 return scoped_allocator_adaptor<outer_allocator_type, _InnerAllocs...>( 252 allocator_traits<outer_allocator_type>::select_on_container_copy_construction(outer_allocator()), 253 allocator_traits<inner_allocator_type>::select_on_container_copy_construction(inner_allocator())); 254 } 255 256 template <class...> 257 friend class __scoped_allocator_storage; 258}; 259 260template <class _OuterAlloc> 261class __scoped_allocator_storage<_OuterAlloc> : public _OuterAlloc { 262 typedef _OuterAlloc outer_allocator_type; 263 264protected: 265 typedef scoped_allocator_adaptor<_OuterAlloc> inner_allocator_type; 266 267 _LIBCPP_HIDE_FROM_ABI __scoped_allocator_storage() _NOEXCEPT {} 268 269 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 270 _LIBCPP_HIDE_FROM_ABI __scoped_allocator_storage(_OuterA2&& __outer_alloc) _NOEXCEPT 271 : outer_allocator_type(std::forward<_OuterA2>(__outer_alloc)) {} 272 273 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, const _OuterA2&>::value, int> = 0> 274 _LIBCPP_HIDE_FROM_ABI __scoped_allocator_storage(const __scoped_allocator_storage<_OuterA2>& __other) _NOEXCEPT 275 : outer_allocator_type(__other.outer_allocator()) {} 276 277 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 278 _LIBCPP_HIDE_FROM_ABI __scoped_allocator_storage(__scoped_allocator_storage<_OuterA2>&& __other) _NOEXCEPT 279 : outer_allocator_type(std::move(__other.outer_allocator())) {} 280 281 _LIBCPP_HIDE_FROM_ABI inner_allocator_type& inner_allocator() _NOEXCEPT { 282 return static_cast<inner_allocator_type&>(*this); 283 } 284 _LIBCPP_HIDE_FROM_ABI const inner_allocator_type& inner_allocator() const _NOEXCEPT { 285 return static_cast<const inner_allocator_type&>(*this); 286 } 287 288 _LIBCPP_HIDE_FROM_ABI outer_allocator_type& outer_allocator() _NOEXCEPT { 289 return static_cast<outer_allocator_type&>(*this); 290 } 291 _LIBCPP_HIDE_FROM_ABI const outer_allocator_type& outer_allocator() const _NOEXCEPT { 292 return static_cast<const outer_allocator_type&>(*this); 293 } 294 295 _LIBCPP_HIDE_FROM_ABI scoped_allocator_adaptor<outer_allocator_type> 296 select_on_container_copy_construction() const _NOEXCEPT { 297 return scoped_allocator_adaptor<outer_allocator_type>( 298 allocator_traits<outer_allocator_type>::select_on_container_copy_construction(outer_allocator())); 299 } 300 301 __scoped_allocator_storage(const outer_allocator_type& __o, const inner_allocator_type& __i) _NOEXCEPT; 302 303 template <class...> 304 friend class __scoped_allocator_storage; 305}; 306 307// __outermost 308 309template <class _Alloc> 310decltype(std::declval<_Alloc>().outer_allocator(), true_type()) __has_outer_allocator_test(_Alloc&& __a); 311 312template <class _Alloc> 313false_type __has_outer_allocator_test(const volatile _Alloc& __a); 314 315template <class _Alloc> 316struct __has_outer_allocator 317 : public common_type< decltype(std::__has_outer_allocator_test(std::declval<_Alloc&>())) >::type {}; 318 319template <class _Alloc, bool = __has_outer_allocator<_Alloc>::value> 320struct __outermost { 321 typedef _Alloc type; 322 _LIBCPP_HIDE_FROM_ABI type& operator()(type& __a) const _NOEXCEPT { return __a; } 323}; 324 325template <class _Alloc> 326struct __outermost<_Alloc, true> { 327 typedef __libcpp_remove_reference_t< decltype(std::declval<_Alloc>().outer_allocator()) > _OuterAlloc; 328 typedef typename __outermost<_OuterAlloc>::type type; 329 _LIBCPP_HIDE_FROM_ABI type& operator()(_Alloc& __a) const _NOEXCEPT { 330 return __outermost<_OuterAlloc>()(__a.outer_allocator()); 331 } 332}; 333 334template <class _OuterAlloc, class... _InnerAllocs> 335class _LIBCPP_TEMPLATE_VIS scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs...> 336 : public __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> { 337 typedef __scoped_allocator_storage<_OuterAlloc, _InnerAllocs...> base; 338 typedef allocator_traits<_OuterAlloc> _OuterTraits; 339 340public: 341 typedef _OuterAlloc outer_allocator_type; 342 typedef typename base::inner_allocator_type inner_allocator_type; 343 typedef typename _OuterTraits::size_type size_type; 344 typedef typename _OuterTraits::difference_type difference_type; 345 typedef typename _OuterTraits::pointer pointer; 346 typedef typename _OuterTraits::const_pointer const_pointer; 347 typedef typename _OuterTraits::void_pointer void_pointer; 348 typedef typename _OuterTraits::const_void_pointer const_void_pointer; 349 350 typedef integral_constant< bool, __get_poc_copy_assignment<outer_allocator_type, _InnerAllocs...>::value > 351 propagate_on_container_copy_assignment; 352 typedef integral_constant< bool, __get_poc_move_assignment<outer_allocator_type, _InnerAllocs...>::value > 353 propagate_on_container_move_assignment; 354 typedef integral_constant< bool, __get_poc_swap<outer_allocator_type, _InnerAllocs...>::value > 355 propagate_on_container_swap; 356 typedef integral_constant< bool, __get_is_always_equal<outer_allocator_type, _InnerAllocs...>::value > 357 is_always_equal; 358 359 template <class _Tp> 360 struct rebind { 361 typedef scoped_allocator_adaptor< typename _OuterTraits::template rebind_alloc<_Tp>, _InnerAllocs... > other; 362 }; 363 364 _LIBCPP_HIDE_FROM_ABI scoped_allocator_adaptor() _NOEXCEPT {} 365 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 366 _LIBCPP_HIDE_FROM_ABI 367 scoped_allocator_adaptor(_OuterA2&& __outer_alloc, const _InnerAllocs&... __inner_allocs) _NOEXCEPT 368 : base(std::forward<_OuterA2>(__outer_alloc), __inner_allocs...) {} 369 // scoped_allocator_adaptor(const scoped_allocator_adaptor& __other) = default; 370 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, const _OuterA2&>::value, int> = 0> 371 _LIBCPP_HIDE_FROM_ABI 372 scoped_allocator_adaptor(const scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>& __other) _NOEXCEPT 373 : base(__other) {} 374 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 375 _LIBCPP_HIDE_FROM_ABI 376 scoped_allocator_adaptor(scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>&& __other) _NOEXCEPT 377 : base(std::move(__other)) {} 378 379 // scoped_allocator_adaptor& operator=(const scoped_allocator_adaptor&) = default; 380 // scoped_allocator_adaptor& operator=(scoped_allocator_adaptor&&) = default; 381 // ~scoped_allocator_adaptor() = default; 382 383 _LIBCPP_HIDE_FROM_ABI inner_allocator_type& inner_allocator() _NOEXCEPT { return base::inner_allocator(); } 384 _LIBCPP_HIDE_FROM_ABI const inner_allocator_type& inner_allocator() const _NOEXCEPT { 385 return base::inner_allocator(); 386 } 387 388 _LIBCPP_HIDE_FROM_ABI outer_allocator_type& outer_allocator() _NOEXCEPT { return base::outer_allocator(); } 389 _LIBCPP_HIDE_FROM_ABI const outer_allocator_type& outer_allocator() const _NOEXCEPT { 390 return base::outer_allocator(); 391 } 392 393 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI pointer allocate(size_type __n) { 394 return allocator_traits<outer_allocator_type>::allocate(outer_allocator(), __n); 395 } 396 _LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_HIDE_FROM_ABI pointer allocate(size_type __n, const_void_pointer __hint) { 397 return allocator_traits<outer_allocator_type>::allocate(outer_allocator(), __n, __hint); 398 } 399 400 _LIBCPP_HIDE_FROM_ABI void deallocate(pointer __p, size_type __n) _NOEXCEPT { 401 allocator_traits<outer_allocator_type>::deallocate(outer_allocator(), __p, __n); 402 } 403 404 _LIBCPP_HIDE_FROM_ABI size_type max_size() const { 405 return allocator_traits<outer_allocator_type>::max_size(outer_allocator()); 406 } 407 408# if _LIBCPP_STD_VER >= 20 409 template <class _Type, class... _Args> 410 _LIBCPP_HIDE_FROM_ABI void construct(_Type* __ptr, _Args&&... __args) { 411 using _OM = __outermost<outer_allocator_type>; 412 std::apply( 413 [__ptr, this](auto&&... __newargs) { 414 allocator_traits<typename _OM::type>::construct( 415 _OM()(outer_allocator()), __ptr, std::forward<decltype(__newargs)>(__newargs)...); 416 }, 417 std::uses_allocator_construction_args<_Type>(inner_allocator(), std::forward<_Args>(__args)...)); 418 } 419# else 420 template <class _Tp, class... _Args> 421 _LIBCPP_HIDE_FROM_ABI void construct(_Tp* __p, _Args&&... __args) { 422 __construct(__uses_alloc_ctor<_Tp, inner_allocator_type&, _Args...>(), __p, std::forward<_Args>(__args)...); 423 } 424 425 template <class _T1, class _T2, class... _Args1, class... _Args2> 426 _LIBCPP_HIDE_FROM_ABI void 427 construct(pair<_T1, _T2>* __p, piecewise_construct_t, tuple<_Args1...> __x, tuple<_Args2...> __y) { 428 typedef __outermost<outer_allocator_type> _OM; 429 allocator_traits<typename _OM::type>::construct( 430 _OM()(outer_allocator()), 431 __p, 432 piecewise_construct, 433 __transform_tuple(typename __uses_alloc_ctor< _T1, inner_allocator_type&, _Args1... >::type(), 434 std::move(__x), 435 typename __make_tuple_indices<sizeof...(_Args1)>::type{}), 436 __transform_tuple(typename __uses_alloc_ctor< _T2, inner_allocator_type&, _Args2... >::type(), 437 std::move(__y), 438 typename __make_tuple_indices<sizeof...(_Args2)>::type{})); 439 } 440 441 template <class _T1, class _T2> 442 _LIBCPP_HIDE_FROM_ABI void construct(pair<_T1, _T2>* __p) { 443 construct(__p, piecewise_construct, tuple<>{}, tuple<>{}); 444 } 445 446 template <class _T1, class _T2, class _Up, class _Vp> 447 _LIBCPP_HIDE_FROM_ABI void construct(pair<_T1, _T2>* __p, _Up&& __x, _Vp&& __y) { 448 construct(__p, 449 piecewise_construct, 450 std::forward_as_tuple(std::forward<_Up>(__x)), 451 std::forward_as_tuple(std::forward<_Vp>(__y))); 452 } 453 454 template <class _T1, class _T2, class _Up, class _Vp> 455 _LIBCPP_HIDE_FROM_ABI void construct(pair<_T1, _T2>* __p, const pair<_Up, _Vp>& __x) { 456 construct(__p, piecewise_construct, std::forward_as_tuple(__x.first), std::forward_as_tuple(__x.second)); 457 } 458 459 template <class _T1, class _T2, class _Up, class _Vp> 460 _LIBCPP_HIDE_FROM_ABI void construct(pair<_T1, _T2>* __p, pair<_Up, _Vp>&& __x) { 461 construct(__p, 462 piecewise_construct, 463 std::forward_as_tuple(std::forward<_Up>(__x.first)), 464 std::forward_as_tuple(std::forward<_Vp>(__x.second))); 465 } 466# endif 467 468 template <class _Tp> 469 _LIBCPP_HIDE_FROM_ABI void destroy(_Tp* __p) { 470 typedef __outermost<outer_allocator_type> _OM; 471 allocator_traits<typename _OM::type>::destroy(_OM()(outer_allocator()), __p); 472 } 473 474 _LIBCPP_HIDE_FROM_ABI scoped_allocator_adaptor select_on_container_copy_construction() const _NOEXCEPT { 475 return base::select_on_container_copy_construction(); 476 } 477 478private: 479 template <class _OuterA2, __enable_if_t<is_constructible<outer_allocator_type, _OuterA2>::value, int> = 0> 480 _LIBCPP_HIDE_FROM_ABI scoped_allocator_adaptor(_OuterA2&& __o, const inner_allocator_type& __i) _NOEXCEPT 481 : base(std::forward<_OuterA2>(__o), __i) {} 482 483 template <class _Tp, class... _Args> 484 _LIBCPP_HIDE_FROM_ABI void __construct(integral_constant<int, 0>, _Tp* __p, _Args&&... __args) { 485 typedef __outermost<outer_allocator_type> _OM; 486 allocator_traits<typename _OM::type>::construct(_OM()(outer_allocator()), __p, std::forward<_Args>(__args)...); 487 } 488 489 template <class _Tp, class... _Args> 490 _LIBCPP_HIDE_FROM_ABI void __construct(integral_constant<int, 1>, _Tp* __p, _Args&&... __args) { 491 typedef __outermost<outer_allocator_type> _OM; 492 allocator_traits<typename _OM::type>::construct( 493 _OM()(outer_allocator()), __p, allocator_arg, inner_allocator(), std::forward<_Args>(__args)...); 494 } 495 496 template <class _Tp, class... _Args> 497 _LIBCPP_HIDE_FROM_ABI void __construct(integral_constant<int, 2>, _Tp* __p, _Args&&... __args) { 498 typedef __outermost<outer_allocator_type> _OM; 499 allocator_traits<typename _OM::type>::construct( 500 _OM()(outer_allocator()), __p, std::forward<_Args>(__args)..., inner_allocator()); 501 } 502 503 template <class... _Args, size_t... _Idx> 504 _LIBCPP_HIDE_FROM_ABI tuple<_Args&&...> 505 __transform_tuple(integral_constant<int, 0>, tuple<_Args...>&& __t, __tuple_indices<_Idx...>) { 506 return std::forward_as_tuple(std::get<_Idx>(std::move(__t))...); 507 } 508 509 template <class... _Args, size_t... _Idx> 510 _LIBCPP_HIDE_FROM_ABI tuple<allocator_arg_t, inner_allocator_type&, _Args&&...> 511 __transform_tuple(integral_constant<int, 1>, tuple<_Args...>&& __t, __tuple_indices<_Idx...>) { 512 using _Tup = tuple<allocator_arg_t, inner_allocator_type&, _Args&&...>; 513 return _Tup(allocator_arg, inner_allocator(), std::get<_Idx>(std::move(__t))...); 514 } 515 516 template <class... _Args, size_t... _Idx> 517 _LIBCPP_HIDE_FROM_ABI tuple<_Args&&..., inner_allocator_type&> 518 __transform_tuple(integral_constant<int, 2>, tuple<_Args...>&& __t, __tuple_indices<_Idx...>) { 519 using _Tup = tuple<_Args&&..., inner_allocator_type&>; 520 return _Tup(std::get<_Idx>(std::move(__t))..., inner_allocator()); 521 } 522 523 template <class...> 524 friend class __scoped_allocator_storage; 525}; 526 527# if _LIBCPP_STD_VER >= 17 528template <class _OuterAlloc, class... _InnerAllocs> 529scoped_allocator_adaptor(_OuterAlloc, _InnerAllocs...) -> scoped_allocator_adaptor<_OuterAlloc, _InnerAllocs...>; 530# endif 531 532template <class _OuterA1, class _OuterA2> 533inline _LIBCPP_HIDE_FROM_ABI bool 534operator==(const scoped_allocator_adaptor<_OuterA1>& __a, const scoped_allocator_adaptor<_OuterA2>& __b) _NOEXCEPT { 535 return __a.outer_allocator() == __b.outer_allocator(); 536} 537 538template <class _OuterA1, class _OuterA2, class _InnerA0, class... _InnerAllocs> 539inline _LIBCPP_HIDE_FROM_ABI bool 540operator==(const scoped_allocator_adaptor<_OuterA1, _InnerA0, _InnerAllocs...>& __a, 541 const scoped_allocator_adaptor<_OuterA2, _InnerA0, _InnerAllocs...>& __b) _NOEXCEPT { 542 return __a.outer_allocator() == __b.outer_allocator() && __a.inner_allocator() == __b.inner_allocator(); 543} 544 545# if _LIBCPP_STD_VER <= 17 546 547template <class _OuterA1, class _OuterA2, class... _InnerAllocs> 548inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const scoped_allocator_adaptor<_OuterA1, _InnerAllocs...>& __a, 549 const scoped_allocator_adaptor<_OuterA2, _InnerAllocs...>& __b) _NOEXCEPT { 550 return !(__a == __b); 551} 552 553# endif // _LIBCPP_STD_VER <= 17 554 555#endif // !defined(_LIBCPP_CXX03_LANG) 556 557_LIBCPP_END_NAMESPACE_STD 558 559_LIBCPP_POP_MACROS 560 561#if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 562# include <atomic> 563# include <climits> 564# include <concepts> 565# include <cstring> 566# include <ctime> 567# include <iterator> 568# include <memory> 569# include <ratio> 570# include <stdexcept> 571# include <type_traits> 572# include <variant> 573#endif 574 575#endif // _LIBCPP_SCOPED_ALLOCATOR 576