1// -*- C++ -*- 2//===---------------------------- deque -----------------------------------===// 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_DEQUE 12#define _LIBCPP_DEQUE 13 14/* 15 deque synopsis 16 17namespace std 18{ 19 20template <class T, class Allocator = allocator<T> > 21class deque 22{ 23public: 24 // types: 25 typedef T value_type; 26 typedef Allocator allocator_type; 27 28 typedef typename allocator_type::reference reference; 29 typedef typename allocator_type::const_reference const_reference; 30 typedef implementation-defined iterator; 31 typedef implementation-defined const_iterator; 32 typedef typename allocator_type::size_type size_type; 33 typedef typename allocator_type::difference_type difference_type; 34 35 typedef typename allocator_type::pointer pointer; 36 typedef typename allocator_type::const_pointer const_pointer; 37 typedef std::reverse_iterator<iterator> reverse_iterator; 38 typedef std::reverse_iterator<const_iterator> const_reverse_iterator; 39 40 // construct/copy/destroy: 41 deque() noexcept(is_nothrow_default_constructible<allocator_type>::value); 42 explicit deque(const allocator_type& a); 43 explicit deque(size_type n); 44 explicit deque(size_type n, const allocator_type& a); // C++14 45 deque(size_type n, const value_type& v); 46 deque(size_type n, const value_type& v, const allocator_type& a); 47 template <class InputIterator> 48 deque(InputIterator f, InputIterator l); 49 template <class InputIterator> 50 deque(InputIterator f, InputIterator l, const allocator_type& a); 51 deque(const deque& c); 52 deque(deque&& c) 53 noexcept(is_nothrow_move_constructible<allocator_type>::value); 54 deque(initializer_list<value_type> il, const Allocator& a = allocator_type()); 55 deque(const deque& c, const allocator_type& a); 56 deque(deque&& c, const allocator_type& a); 57 ~deque(); 58 59 deque& operator=(const deque& c); 60 deque& operator=(deque&& c) 61 noexcept( 62 allocator_type::propagate_on_container_move_assignment::value && 63 is_nothrow_move_assignable<allocator_type>::value); 64 deque& operator=(initializer_list<value_type> il); 65 66 template <class InputIterator> 67 void assign(InputIterator f, InputIterator l); 68 void assign(size_type n, const value_type& v); 69 void assign(initializer_list<value_type> il); 70 71 allocator_type get_allocator() const noexcept; 72 73 // iterators: 74 75 iterator begin() noexcept; 76 const_iterator begin() const noexcept; 77 iterator end() noexcept; 78 const_iterator end() const noexcept; 79 80 reverse_iterator rbegin() noexcept; 81 const_reverse_iterator rbegin() const noexcept; 82 reverse_iterator rend() noexcept; 83 const_reverse_iterator rend() const noexcept; 84 85 const_iterator cbegin() const noexcept; 86 const_iterator cend() const noexcept; 87 const_reverse_iterator crbegin() const noexcept; 88 const_reverse_iterator crend() const noexcept; 89 90 // capacity: 91 size_type size() const noexcept; 92 size_type max_size() const noexcept; 93 void resize(size_type n); 94 void resize(size_type n, const value_type& v); 95 void shrink_to_fit(); 96 bool empty() const noexcept; 97 98 // element access: 99 reference operator[](size_type i); 100 const_reference operator[](size_type i) const; 101 reference at(size_type i); 102 const_reference at(size_type i) const; 103 reference front(); 104 const_reference front() const; 105 reference back(); 106 const_reference back() const; 107 108 // modifiers: 109 void push_front(const value_type& v); 110 void push_front(value_type&& v); 111 void push_back(const value_type& v); 112 void push_back(value_type&& v); 113 template <class... Args> reference emplace_front(Args&&... args); // reference in C++17 114 template <class... Args> reference emplace_back(Args&&... args); // reference in C++17 115 template <class... Args> iterator emplace(const_iterator p, Args&&... args); 116 iterator insert(const_iterator p, const value_type& v); 117 iterator insert(const_iterator p, value_type&& v); 118 iterator insert(const_iterator p, size_type n, const value_type& v); 119 template <class InputIterator> 120 iterator insert(const_iterator p, InputIterator f, InputIterator l); 121 iterator insert(const_iterator p, initializer_list<value_type> il); 122 void pop_front(); 123 void pop_back(); 124 iterator erase(const_iterator p); 125 iterator erase(const_iterator f, const_iterator l); 126 void swap(deque& c) 127 noexcept(allocator_traits<allocator_type>::is_always_equal::value); // C++17 128 void clear() noexcept; 129}; 130 131template <class T, class Allocator> 132 bool operator==(const deque<T,Allocator>& x, const deque<T,Allocator>& y); 133template <class T, class Allocator> 134 bool operator< (const deque<T,Allocator>& x, const deque<T,Allocator>& y); 135template <class T, class Allocator> 136 bool operator!=(const deque<T,Allocator>& x, const deque<T,Allocator>& y); 137template <class T, class Allocator> 138 bool operator> (const deque<T,Allocator>& x, const deque<T,Allocator>& y); 139template <class T, class Allocator> 140 bool operator>=(const deque<T,Allocator>& x, const deque<T,Allocator>& y); 141template <class T, class Allocator> 142 bool operator<=(const deque<T,Allocator>& x, const deque<T,Allocator>& y); 143 144// specialized algorithms: 145template <class T, class Allocator> 146 void swap(deque<T,Allocator>& x, deque<T,Allocator>& y) 147 noexcept(noexcept(x.swap(y))); 148 149} // std 150 151*/ 152 153#include <__config> 154#include <__split_buffer> 155#include <type_traits> 156#include <initializer_list> 157#include <iterator> 158#include <algorithm> 159#include <stdexcept> 160 161#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 162#pragma GCC system_header 163#endif 164 165_LIBCPP_PUSH_MACROS 166#include <__undef_macros> 167 168 169_LIBCPP_BEGIN_NAMESPACE_STD 170 171template <class _Tp, class _Allocator> class __deque_base; 172template <class _Tp, class _Allocator = allocator<_Tp> > class _LIBCPP_TEMPLATE_VIS deque; 173 174template <class _ValueType, class _Pointer, class _Reference, class _MapPointer, 175 class _DiffType, _DiffType _BlockSize> 176class _LIBCPP_TEMPLATE_VIS __deque_iterator; 177 178template <class _RAIter, 179 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 180__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 181copy(_RAIter __f, 182 _RAIter __l, 183 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 184 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type* = 0); 185 186template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 187 class _OutputIterator> 188_OutputIterator 189copy(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 190 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 191 _OutputIterator __r); 192 193template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 194 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 195__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 196copy(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 197 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 198 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 199 200template <class _RAIter, 201 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 202__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 203copy_backward(_RAIter __f, 204 _RAIter __l, 205 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 206 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type* = 0); 207 208template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 209 class _OutputIterator> 210_OutputIterator 211copy_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 212 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 213 _OutputIterator __r); 214 215template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 216 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 217__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 218copy_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 219 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 220 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 221 222template <class _RAIter, 223 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 224__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 225move(_RAIter __f, 226 _RAIter __l, 227 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 228 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type* = 0); 229 230template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 231 class _OutputIterator> 232_OutputIterator 233move(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 234 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 235 _OutputIterator __r); 236 237template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 238 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 239__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 240move(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 241 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 242 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 243 244template <class _RAIter, 245 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 246__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 247move_backward(_RAIter __f, 248 _RAIter __l, 249 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 250 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type* = 0); 251 252template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 253 class _OutputIterator> 254_OutputIterator 255move_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 256 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 257 _OutputIterator __r); 258 259template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 260 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 261__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 262move_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 263 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 264 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 265 266template <class _ValueType, class _DiffType> 267struct __deque_block_size { 268 static const _DiffType value = sizeof(_ValueType) < 256 ? 4096 / sizeof(_ValueType) : 16; 269}; 270 271template <class _ValueType, class _Pointer, class _Reference, class _MapPointer, 272 class _DiffType, _DiffType _BS = 273#ifdef _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE 274// Keep template parameter to avoid changing all template declarations thoughout 275// this file. 276 0 277#else 278 __deque_block_size<_ValueType, _DiffType>::value 279#endif 280 > 281class _LIBCPP_TEMPLATE_VIS __deque_iterator 282{ 283 typedef _MapPointer __map_iterator; 284public: 285 typedef _Pointer pointer; 286 typedef _DiffType difference_type; 287private: 288 __map_iterator __m_iter_; 289 pointer __ptr_; 290 291 static const difference_type __block_size; 292public: 293 typedef _ValueType value_type; 294 typedef random_access_iterator_tag iterator_category; 295 typedef _Reference reference; 296 297 _LIBCPP_INLINE_VISIBILITY __deque_iterator() _NOEXCEPT 298#if _LIBCPP_STD_VER > 11 299 : __m_iter_(nullptr), __ptr_(nullptr) 300#endif 301 {} 302 303 template <class _Pp, class _Rp, class _MP> 304 _LIBCPP_INLINE_VISIBILITY 305 __deque_iterator(const __deque_iterator<value_type, _Pp, _Rp, _MP, difference_type, _BS>& __it, 306 typename enable_if<is_convertible<_Pp, pointer>::value>::type* = 0) _NOEXCEPT 307 : __m_iter_(__it.__m_iter_), __ptr_(__it.__ptr_) {} 308 309 _LIBCPP_INLINE_VISIBILITY reference operator*() const {return *__ptr_;} 310 _LIBCPP_INLINE_VISIBILITY pointer operator->() const {return __ptr_;} 311 312 _LIBCPP_INLINE_VISIBILITY __deque_iterator& operator++() 313 { 314 if (++__ptr_ - *__m_iter_ == __block_size) 315 { 316 ++__m_iter_; 317 __ptr_ = *__m_iter_; 318 } 319 return *this; 320 } 321 322 _LIBCPP_INLINE_VISIBILITY __deque_iterator operator++(int) 323 { 324 __deque_iterator __tmp = *this; 325 ++(*this); 326 return __tmp; 327 } 328 329 _LIBCPP_INLINE_VISIBILITY __deque_iterator& operator--() 330 { 331 if (__ptr_ == *__m_iter_) 332 { 333 --__m_iter_; 334 __ptr_ = *__m_iter_ + __block_size; 335 } 336 --__ptr_; 337 return *this; 338 } 339 340 _LIBCPP_INLINE_VISIBILITY __deque_iterator operator--(int) 341 { 342 __deque_iterator __tmp = *this; 343 --(*this); 344 return __tmp; 345 } 346 347 _LIBCPP_INLINE_VISIBILITY __deque_iterator& operator+=(difference_type __n) 348 { 349 if (__n != 0) 350 { 351 __n += __ptr_ - *__m_iter_; 352 if (__n > 0) 353 { 354 __m_iter_ += __n / __block_size; 355 __ptr_ = *__m_iter_ + __n % __block_size; 356 } 357 else // (__n < 0) 358 { 359 difference_type __z = __block_size - 1 - __n; 360 __m_iter_ -= __z / __block_size; 361 __ptr_ = *__m_iter_ + (__block_size - 1 - __z % __block_size); 362 } 363 } 364 return *this; 365 } 366 367 _LIBCPP_INLINE_VISIBILITY __deque_iterator& operator-=(difference_type __n) 368 { 369 return *this += -__n; 370 } 371 372 _LIBCPP_INLINE_VISIBILITY __deque_iterator operator+(difference_type __n) const 373 { 374 __deque_iterator __t(*this); 375 __t += __n; 376 return __t; 377 } 378 379 _LIBCPP_INLINE_VISIBILITY __deque_iterator operator-(difference_type __n) const 380 { 381 __deque_iterator __t(*this); 382 __t -= __n; 383 return __t; 384 } 385 386 _LIBCPP_INLINE_VISIBILITY 387 friend __deque_iterator operator+(difference_type __n, const __deque_iterator& __it) 388 {return __it + __n;} 389 390 _LIBCPP_INLINE_VISIBILITY 391 friend difference_type operator-(const __deque_iterator& __x, const __deque_iterator& __y) 392 { 393 if (__x != __y) 394 return (__x.__m_iter_ - __y.__m_iter_) * __block_size 395 + (__x.__ptr_ - *__x.__m_iter_) 396 - (__y.__ptr_ - *__y.__m_iter_); 397 return 0; 398 } 399 400 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const 401 {return *(*this + __n);} 402 403 _LIBCPP_INLINE_VISIBILITY friend 404 bool operator==(const __deque_iterator& __x, const __deque_iterator& __y) 405 {return __x.__ptr_ == __y.__ptr_;} 406 407 _LIBCPP_INLINE_VISIBILITY friend 408 bool operator!=(const __deque_iterator& __x, const __deque_iterator& __y) 409 {return !(__x == __y);} 410 411 _LIBCPP_INLINE_VISIBILITY friend 412 bool operator<(const __deque_iterator& __x, const __deque_iterator& __y) 413 {return __x.__m_iter_ < __y.__m_iter_ || 414 (__x.__m_iter_ == __y.__m_iter_ && __x.__ptr_ < __y.__ptr_);} 415 416 _LIBCPP_INLINE_VISIBILITY friend 417 bool operator>(const __deque_iterator& __x, const __deque_iterator& __y) 418 {return __y < __x;} 419 420 _LIBCPP_INLINE_VISIBILITY friend 421 bool operator<=(const __deque_iterator& __x, const __deque_iterator& __y) 422 {return !(__y < __x);} 423 424 _LIBCPP_INLINE_VISIBILITY friend 425 bool operator>=(const __deque_iterator& __x, const __deque_iterator& __y) 426 {return !(__x < __y);} 427 428private: 429 _LIBCPP_INLINE_VISIBILITY __deque_iterator(__map_iterator __m, pointer __p) _NOEXCEPT 430 : __m_iter_(__m), __ptr_(__p) {} 431 432 template <class _Tp, class _Ap> friend class __deque_base; 433 template <class _Tp, class _Ap> friend class _LIBCPP_TEMPLATE_VIS deque; 434 template <class _Vp, class _Pp, class _Rp, class _MP, class _Dp, _Dp> 435 friend class _LIBCPP_TEMPLATE_VIS __deque_iterator; 436 437 template <class _RAIter, 438 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 439 friend 440 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 441 copy(_RAIter __f, 442 _RAIter __l, 443 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 444 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*); 445 446 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 447 class _OutputIterator> 448 friend 449 _OutputIterator 450 copy(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 451 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 452 _OutputIterator __r); 453 454 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 455 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 456 friend 457 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 458 copy(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 459 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 460 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 461 462 template <class _RAIter, 463 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 464 friend 465 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 466 copy_backward(_RAIter __f, 467 _RAIter __l, 468 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 469 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*); 470 471 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 472 class _OutputIterator> 473 friend 474 _OutputIterator 475 copy_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 476 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 477 _OutputIterator __r); 478 479 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 480 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 481 friend 482 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 483 copy_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 484 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 485 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 486 487 template <class _RAIter, 488 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 489 friend 490 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 491 move(_RAIter __f, 492 _RAIter __l, 493 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 494 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*); 495 496 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 497 class _OutputIterator> 498 friend 499 _OutputIterator 500 move(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 501 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 502 _OutputIterator __r); 503 504 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 505 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 506 friend 507 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 508 move(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 509 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 510 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 511 512 template <class _RAIter, 513 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 514 friend 515 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 516 move_backward(_RAIter __f, 517 _RAIter __l, 518 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 519 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*); 520 521 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 522 class _OutputIterator> 523 friend 524 _OutputIterator 525 move_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 526 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 527 _OutputIterator __r); 528 529 template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 530 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 531 friend 532 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 533 move_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 534 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 535 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r); 536}; 537 538template <class _ValueType, class _Pointer, class _Reference, class _MapPointer, 539 class _DiffType, _DiffType _BlockSize> 540const _DiffType __deque_iterator<_ValueType, _Pointer, _Reference, _MapPointer, 541 _DiffType, _BlockSize>::__block_size = 542 __deque_block_size<_ValueType, _DiffType>::value; 543 544// copy 545 546template <class _RAIter, 547 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 548__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 549copy(_RAIter __f, 550 _RAIter __l, 551 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 552 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*) 553{ 554 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::difference_type difference_type; 555 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::pointer pointer; 556 const difference_type __block_size = __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::__block_size; 557 while (__f != __l) 558 { 559 pointer __rb = __r.__ptr_; 560 pointer __re = *__r.__m_iter_ + __block_size; 561 difference_type __bs = __re - __rb; 562 difference_type __n = __l - __f; 563 _RAIter __m = __l; 564 if (__n > __bs) 565 { 566 __n = __bs; 567 __m = __f + __n; 568 } 569 _VSTD::copy(__f, __m, __rb); 570 __f = __m; 571 __r += __n; 572 } 573 return __r; 574} 575 576template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 577 class _OutputIterator> 578_OutputIterator 579copy(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 580 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 581 _OutputIterator __r) 582{ 583 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 584 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 585 const difference_type __block_size = __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::__block_size; 586 difference_type __n = __l - __f; 587 while (__n > 0) 588 { 589 pointer __fb = __f.__ptr_; 590 pointer __fe = *__f.__m_iter_ + __block_size; 591 difference_type __bs = __fe - __fb; 592 if (__bs > __n) 593 { 594 __bs = __n; 595 __fe = __fb + __bs; 596 } 597 __r = _VSTD::copy(__fb, __fe, __r); 598 __n -= __bs; 599 __f += __bs; 600 } 601 return __r; 602} 603 604template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 605 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 606__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 607copy(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 608 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 609 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r) 610{ 611 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 612 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 613 const difference_type __block_size = __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::__block_size; 614 difference_type __n = __l - __f; 615 while (__n > 0) 616 { 617 pointer __fb = __f.__ptr_; 618 pointer __fe = *__f.__m_iter_ + __block_size; 619 difference_type __bs = __fe - __fb; 620 if (__bs > __n) 621 { 622 __bs = __n; 623 __fe = __fb + __bs; 624 } 625 __r = _VSTD::copy(__fb, __fe, __r); 626 __n -= __bs; 627 __f += __bs; 628 } 629 return __r; 630} 631 632// copy_backward 633 634template <class _RAIter, 635 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 636__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 637copy_backward(_RAIter __f, 638 _RAIter __l, 639 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 640 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*) 641{ 642 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::difference_type difference_type; 643 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::pointer pointer; 644 while (__f != __l) 645 { 646 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __rp = _VSTD::prev(__r); 647 pointer __rb = *__rp.__m_iter_; 648 pointer __re = __rp.__ptr_ + 1; 649 difference_type __bs = __re - __rb; 650 difference_type __n = __l - __f; 651 _RAIter __m = __f; 652 if (__n > __bs) 653 { 654 __n = __bs; 655 __m = __l - __n; 656 } 657 _VSTD::copy_backward(__m, __l, __re); 658 __l = __m; 659 __r -= __n; 660 } 661 return __r; 662} 663 664template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 665 class _OutputIterator> 666_OutputIterator 667copy_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 668 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 669 _OutputIterator __r) 670{ 671 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 672 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 673 difference_type __n = __l - __f; 674 while (__n > 0) 675 { 676 --__l; 677 pointer __lb = *__l.__m_iter_; 678 pointer __le = __l.__ptr_ + 1; 679 difference_type __bs = __le - __lb; 680 if (__bs > __n) 681 { 682 __bs = __n; 683 __lb = __le - __bs; 684 } 685 __r = _VSTD::copy_backward(__lb, __le, __r); 686 __n -= __bs; 687 __l -= __bs - 1; 688 } 689 return __r; 690} 691 692template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 693 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 694__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 695copy_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 696 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 697 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r) 698{ 699 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 700 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 701 difference_type __n = __l - __f; 702 while (__n > 0) 703 { 704 --__l; 705 pointer __lb = *__l.__m_iter_; 706 pointer __le = __l.__ptr_ + 1; 707 difference_type __bs = __le - __lb; 708 if (__bs > __n) 709 { 710 __bs = __n; 711 __lb = __le - __bs; 712 } 713 __r = _VSTD::copy_backward(__lb, __le, __r); 714 __n -= __bs; 715 __l -= __bs - 1; 716 } 717 return __r; 718} 719 720// move 721 722template <class _RAIter, 723 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 724__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 725move(_RAIter __f, 726 _RAIter __l, 727 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 728 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*) 729{ 730 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::difference_type difference_type; 731 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::pointer pointer; 732 const difference_type __block_size = __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::__block_size; 733 while (__f != __l) 734 { 735 pointer __rb = __r.__ptr_; 736 pointer __re = *__r.__m_iter_ + __block_size; 737 difference_type __bs = __re - __rb; 738 difference_type __n = __l - __f; 739 _RAIter __m = __l; 740 if (__n > __bs) 741 { 742 __n = __bs; 743 __m = __f + __n; 744 } 745 _VSTD::move(__f, __m, __rb); 746 __f = __m; 747 __r += __n; 748 } 749 return __r; 750} 751 752template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 753 class _OutputIterator> 754_OutputIterator 755move(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 756 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 757 _OutputIterator __r) 758{ 759 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 760 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 761 const difference_type __block_size = __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::__block_size; 762 difference_type __n = __l - __f; 763 while (__n > 0) 764 { 765 pointer __fb = __f.__ptr_; 766 pointer __fe = *__f.__m_iter_ + __block_size; 767 difference_type __bs = __fe - __fb; 768 if (__bs > __n) 769 { 770 __bs = __n; 771 __fe = __fb + __bs; 772 } 773 __r = _VSTD::move(__fb, __fe, __r); 774 __n -= __bs; 775 __f += __bs; 776 } 777 return __r; 778} 779 780template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 781 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 782__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 783move(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 784 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 785 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r) 786{ 787 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 788 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 789 const difference_type __block_size = __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::__block_size; 790 difference_type __n = __l - __f; 791 while (__n > 0) 792 { 793 pointer __fb = __f.__ptr_; 794 pointer __fe = *__f.__m_iter_ + __block_size; 795 difference_type __bs = __fe - __fb; 796 if (__bs > __n) 797 { 798 __bs = __n; 799 __fe = __fb + __bs; 800 } 801 __r = _VSTD::move(__fb, __fe, __r); 802 __n -= __bs; 803 __f += __bs; 804 } 805 return __r; 806} 807 808// move_backward 809 810template <class _RAIter, 811 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 812__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 813move_backward(_RAIter __f, 814 _RAIter __l, 815 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r, 816 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*) 817{ 818 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::difference_type difference_type; 819 typedef typename __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2>::pointer pointer; 820 while (__f != __l) 821 { 822 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __rp = _VSTD::prev(__r); 823 pointer __rb = *__rp.__m_iter_; 824 pointer __re = __rp.__ptr_ + 1; 825 difference_type __bs = __re - __rb; 826 difference_type __n = __l - __f; 827 _RAIter __m = __f; 828 if (__n > __bs) 829 { 830 __n = __bs; 831 __m = __l - __n; 832 } 833 _VSTD::move_backward(__m, __l, __re); 834 __l = __m; 835 __r -= __n; 836 } 837 return __r; 838} 839 840template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 841 class _OutputIterator> 842_OutputIterator 843move_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 844 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 845 _OutputIterator __r) 846{ 847 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 848 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 849 difference_type __n = __l - __f; 850 while (__n > 0) 851 { 852 --__l; 853 pointer __lb = *__l.__m_iter_; 854 pointer __le = __l.__ptr_ + 1; 855 difference_type __bs = __le - __lb; 856 if (__bs > __n) 857 { 858 __bs = __n; 859 __lb = __le - __bs; 860 } 861 __r = _VSTD::move_backward(__lb, __le, __r); 862 __n -= __bs; 863 __l -= __bs - 1; 864 } 865 return __r; 866} 867 868template <class _V1, class _P1, class _R1, class _M1, class _D1, _D1 _B1, 869 class _V2, class _P2, class _R2, class _M2, class _D2, _D2 _B2> 870__deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> 871move_backward(__deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __f, 872 __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1> __l, 873 __deque_iterator<_V2, _P2, _R2, _M2, _D2, _B2> __r) 874{ 875 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::difference_type difference_type; 876 typedef typename __deque_iterator<_V1, _P1, _R1, _M1, _D1, _B1>::pointer pointer; 877 difference_type __n = __l - __f; 878 while (__n > 0) 879 { 880 --__l; 881 pointer __lb = *__l.__m_iter_; 882 pointer __le = __l.__ptr_ + 1; 883 difference_type __bs = __le - __lb; 884 if (__bs > __n) 885 { 886 __bs = __n; 887 __lb = __le - __bs; 888 } 889 __r = _VSTD::move_backward(__lb, __le, __r); 890 __n -= __bs; 891 __l -= __bs - 1; 892 } 893 return __r; 894} 895 896template <bool> 897class __deque_base_common 898{ 899protected: 900 _LIBCPP_NORETURN void __throw_length_error() const; 901 _LIBCPP_NORETURN void __throw_out_of_range() const; 902}; 903 904template <bool __b> 905void 906__deque_base_common<__b>::__throw_length_error() const 907{ 908 _VSTD::__throw_length_error("deque"); 909} 910 911template <bool __b> 912void 913__deque_base_common<__b>::__throw_out_of_range() const 914{ 915 _VSTD::__throw_out_of_range("deque"); 916} 917 918template <class _Tp, class _Allocator> 919class __deque_base 920 : protected __deque_base_common<true> 921{ 922 __deque_base(const __deque_base& __c); 923 __deque_base& operator=(const __deque_base& __c); 924protected: 925 typedef _Tp value_type; 926 typedef _Allocator allocator_type; 927 typedef allocator_traits<allocator_type> __alloc_traits; 928 typedef value_type& reference; 929 typedef const value_type& const_reference; 930 typedef typename __alloc_traits::size_type size_type; 931 typedef typename __alloc_traits::difference_type difference_type; 932 typedef typename __alloc_traits::pointer pointer; 933 typedef typename __alloc_traits::const_pointer const_pointer; 934 935 static const difference_type __block_size; 936 937 typedef typename __rebind_alloc_helper<__alloc_traits, pointer>::type __pointer_allocator; 938 typedef allocator_traits<__pointer_allocator> __map_traits; 939 typedef typename __map_traits::pointer __map_pointer; 940 typedef typename __rebind_alloc_helper<__alloc_traits, const_pointer>::type __const_pointer_allocator; 941 typedef typename allocator_traits<__const_pointer_allocator>::const_pointer __map_const_pointer; 942 typedef __split_buffer<pointer, __pointer_allocator> __map; 943 944 typedef __deque_iterator<value_type, pointer, reference, __map_pointer, 945 difference_type> iterator; 946 typedef __deque_iterator<value_type, const_pointer, const_reference, __map_const_pointer, 947 difference_type> const_iterator; 948 949 __map __map_; 950 size_type __start_; 951 __compressed_pair<size_type, allocator_type> __size_; 952 953 iterator begin() _NOEXCEPT; 954 const_iterator begin() const _NOEXCEPT; 955 iterator end() _NOEXCEPT; 956 const_iterator end() const _NOEXCEPT; 957 958 _LIBCPP_INLINE_VISIBILITY size_type& size() {return __size_.first();} 959 _LIBCPP_INLINE_VISIBILITY 960 const size_type& size() const _NOEXCEPT {return __size_.first();} 961 _LIBCPP_INLINE_VISIBILITY allocator_type& __alloc() {return __size_.second();} 962 _LIBCPP_INLINE_VISIBILITY 963 const allocator_type& __alloc() const _NOEXCEPT {return __size_.second();} 964 965 _LIBCPP_INLINE_VISIBILITY 966 __deque_base() 967 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value); 968 _LIBCPP_INLINE_VISIBILITY 969 explicit __deque_base(const allocator_type& __a); 970public: 971 ~__deque_base(); 972 973#ifndef _LIBCPP_CXX03_LANG 974 __deque_base(__deque_base&& __c) 975 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value); 976 __deque_base(__deque_base&& __c, const allocator_type& __a); 977#endif // _LIBCPP_CXX03_LANG 978 979 void swap(__deque_base& __c) 980#if _LIBCPP_STD_VER >= 14 981 _NOEXCEPT; 982#else 983 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 984 __is_nothrow_swappable<allocator_type>::value); 985#endif 986protected: 987 void clear() _NOEXCEPT; 988 989 bool __invariants() const; 990 991 _LIBCPP_INLINE_VISIBILITY 992 void __move_assign(__deque_base& __c) 993 _NOEXCEPT_(__alloc_traits::propagate_on_container_move_assignment::value && 994 is_nothrow_move_assignable<allocator_type>::value) 995 { 996 __map_ = _VSTD::move(__c.__map_); 997 __start_ = __c.__start_; 998 size() = __c.size(); 999 __move_assign_alloc(__c); 1000 __c.__start_ = __c.size() = 0; 1001 } 1002 1003 _LIBCPP_INLINE_VISIBILITY 1004 void __move_assign_alloc(__deque_base& __c) 1005 _NOEXCEPT_(!__alloc_traits::propagate_on_container_move_assignment::value || 1006 is_nothrow_move_assignable<allocator_type>::value) 1007 {__move_assign_alloc(__c, integral_constant<bool, 1008 __alloc_traits::propagate_on_container_move_assignment::value>());} 1009 1010private: 1011 _LIBCPP_INLINE_VISIBILITY 1012 void __move_assign_alloc(__deque_base& __c, true_type) 1013 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1014 { 1015 __alloc() = _VSTD::move(__c.__alloc()); 1016 } 1017 1018 _LIBCPP_INLINE_VISIBILITY 1019 void __move_assign_alloc(__deque_base&, false_type) _NOEXCEPT 1020 {} 1021}; 1022 1023template <class _Tp, class _Allocator> 1024const typename __deque_base<_Tp, _Allocator>::difference_type 1025 __deque_base<_Tp, _Allocator>::__block_size = 1026 __deque_block_size<value_type, difference_type>::value; 1027 1028template <class _Tp, class _Allocator> 1029bool 1030__deque_base<_Tp, _Allocator>::__invariants() const 1031{ 1032 if (!__map_.__invariants()) 1033 return false; 1034 if (__map_.size() >= size_type(-1) / __block_size) 1035 return false; 1036 for (typename __map::const_iterator __i = __map_.begin(), __e = __map_.end(); 1037 __i != __e; ++__i) 1038 if (*__i == nullptr) 1039 return false; 1040 if (__map_.size() != 0) 1041 { 1042 if (size() >= __map_.size() * __block_size) 1043 return false; 1044 if (__start_ >= __map_.size() * __block_size - size()) 1045 return false; 1046 } 1047 else 1048 { 1049 if (size() != 0) 1050 return false; 1051 if (__start_ != 0) 1052 return false; 1053 } 1054 return true; 1055} 1056 1057template <class _Tp, class _Allocator> 1058typename __deque_base<_Tp, _Allocator>::iterator 1059__deque_base<_Tp, _Allocator>::begin() _NOEXCEPT 1060{ 1061 __map_pointer __mp = __map_.begin() + __start_ / __block_size; 1062 return iterator(__mp, __map_.empty() ? 0 : *__mp + __start_ % __block_size); 1063} 1064 1065template <class _Tp, class _Allocator> 1066typename __deque_base<_Tp, _Allocator>::const_iterator 1067__deque_base<_Tp, _Allocator>::begin() const _NOEXCEPT 1068{ 1069 __map_const_pointer __mp = static_cast<__map_const_pointer>(__map_.begin() + __start_ / __block_size); 1070 return const_iterator(__mp, __map_.empty() ? 0 : *__mp + __start_ % __block_size); 1071} 1072 1073template <class _Tp, class _Allocator> 1074typename __deque_base<_Tp, _Allocator>::iterator 1075__deque_base<_Tp, _Allocator>::end() _NOEXCEPT 1076{ 1077 size_type __p = size() + __start_; 1078 __map_pointer __mp = __map_.begin() + __p / __block_size; 1079 return iterator(__mp, __map_.empty() ? 0 : *__mp + __p % __block_size); 1080} 1081 1082template <class _Tp, class _Allocator> 1083typename __deque_base<_Tp, _Allocator>::const_iterator 1084__deque_base<_Tp, _Allocator>::end() const _NOEXCEPT 1085{ 1086 size_type __p = size() + __start_; 1087 __map_const_pointer __mp = static_cast<__map_const_pointer>(__map_.begin() + __p / __block_size); 1088 return const_iterator(__mp, __map_.empty() ? 0 : *__mp + __p % __block_size); 1089} 1090 1091template <class _Tp, class _Allocator> 1092inline 1093__deque_base<_Tp, _Allocator>::__deque_base() 1094 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1095 : __start_(0), __size_(0) {} 1096 1097template <class _Tp, class _Allocator> 1098inline 1099__deque_base<_Tp, _Allocator>::__deque_base(const allocator_type& __a) 1100 : __map_(__pointer_allocator(__a)), __start_(0), __size_(0, __a) {} 1101 1102template <class _Tp, class _Allocator> 1103__deque_base<_Tp, _Allocator>::~__deque_base() 1104{ 1105 clear(); 1106 typename __map::iterator __i = __map_.begin(); 1107 typename __map::iterator __e = __map_.end(); 1108 for (; __i != __e; ++__i) 1109 __alloc_traits::deallocate(__alloc(), *__i, __block_size); 1110} 1111 1112#ifndef _LIBCPP_CXX03_LANG 1113 1114template <class _Tp, class _Allocator> 1115__deque_base<_Tp, _Allocator>::__deque_base(__deque_base&& __c) 1116 _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value) 1117 : __map_(_VSTD::move(__c.__map_)), 1118 __start_(_VSTD::move(__c.__start_)), 1119 __size_(_VSTD::move(__c.__size_)) 1120{ 1121 __c.__start_ = 0; 1122 __c.size() = 0; 1123} 1124 1125template <class _Tp, class _Allocator> 1126__deque_base<_Tp, _Allocator>::__deque_base(__deque_base&& __c, const allocator_type& __a) 1127 : __map_(_VSTD::move(__c.__map_), __pointer_allocator(__a)), 1128 __start_(_VSTD::move(__c.__start_)), 1129 __size_(_VSTD::move(__c.size()), __a) 1130{ 1131 if (__a == __c.__alloc()) 1132 { 1133 __c.__start_ = 0; 1134 __c.size() = 0; 1135 } 1136 else 1137 { 1138 __map_.clear(); 1139 __start_ = 0; 1140 size() = 0; 1141 } 1142} 1143 1144#endif // _LIBCPP_CXX03_LANG 1145 1146template <class _Tp, class _Allocator> 1147void 1148__deque_base<_Tp, _Allocator>::swap(__deque_base& __c) 1149#if _LIBCPP_STD_VER >= 14 1150 _NOEXCEPT 1151#else 1152 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1153 __is_nothrow_swappable<allocator_type>::value) 1154#endif 1155{ 1156 __map_.swap(__c.__map_); 1157 _VSTD::swap(__start_, __c.__start_); 1158 _VSTD::swap(size(), __c.size()); 1159 __swap_allocator(__alloc(), __c.__alloc()); 1160} 1161 1162template <class _Tp, class _Allocator> 1163void 1164__deque_base<_Tp, _Allocator>::clear() _NOEXCEPT 1165{ 1166 allocator_type& __a = __alloc(); 1167 for (iterator __i = begin(), __e = end(); __i != __e; ++__i) 1168 __alloc_traits::destroy(__a, _VSTD::addressof(*__i)); 1169 size() = 0; 1170 while (__map_.size() > 2) 1171 { 1172 __alloc_traits::deallocate(__a, __map_.front(), __block_size); 1173 __map_.pop_front(); 1174 } 1175 switch (__map_.size()) 1176 { 1177 case 1: 1178 __start_ = __block_size / 2; 1179 break; 1180 case 2: 1181 __start_ = __block_size; 1182 break; 1183 } 1184} 1185 1186template <class _Tp, class _Allocator /*= allocator<_Tp>*/> 1187class _LIBCPP_TEMPLATE_VIS deque 1188 : private __deque_base<_Tp, _Allocator> 1189{ 1190public: 1191 // types: 1192 1193 typedef _Tp value_type; 1194 typedef _Allocator allocator_type; 1195 1196 static_assert((is_same<typename allocator_type::value_type, value_type>::value), 1197 "Allocator::value_type must be same type as value_type"); 1198 1199 typedef __deque_base<value_type, allocator_type> __base; 1200 1201 typedef typename __base::__alloc_traits __alloc_traits; 1202 typedef typename __base::reference reference; 1203 typedef typename __base::const_reference const_reference; 1204 typedef typename __base::iterator iterator; 1205 typedef typename __base::const_iterator const_iterator; 1206 typedef typename __base::size_type size_type; 1207 typedef typename __base::difference_type difference_type; 1208 1209 typedef typename __base::pointer pointer; 1210 typedef typename __base::const_pointer const_pointer; 1211 typedef _VSTD::reverse_iterator<iterator> reverse_iterator; 1212 typedef _VSTD::reverse_iterator<const_iterator> const_reverse_iterator; 1213 1214 // construct/copy/destroy: 1215 _LIBCPP_INLINE_VISIBILITY 1216 deque() 1217 _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) 1218 {} 1219 _LIBCPP_INLINE_VISIBILITY explicit deque(const allocator_type& __a) : __base(__a) {} 1220 explicit deque(size_type __n); 1221#if _LIBCPP_STD_VER > 11 1222 explicit deque(size_type __n, const _Allocator& __a); 1223#endif 1224 deque(size_type __n, const value_type& __v); 1225 deque(size_type __n, const value_type& __v, const allocator_type& __a); 1226 template <class _InputIter> 1227 deque(_InputIter __f, _InputIter __l, 1228 typename enable_if<__is_input_iterator<_InputIter>::value>::type* = 0); 1229 template <class _InputIter> 1230 deque(_InputIter __f, _InputIter __l, const allocator_type& __a, 1231 typename enable_if<__is_input_iterator<_InputIter>::value>::type* = 0); 1232 deque(const deque& __c); 1233 deque(const deque& __c, const allocator_type& __a); 1234 1235 deque& operator=(const deque& __c); 1236 1237#ifndef _LIBCPP_CXX03_LANG 1238 deque(initializer_list<value_type> __il); 1239 deque(initializer_list<value_type> __il, const allocator_type& __a); 1240 1241 _LIBCPP_INLINE_VISIBILITY 1242 deque& operator=(initializer_list<value_type> __il) {assign(__il); return *this;} 1243 1244 _LIBCPP_INLINE_VISIBILITY 1245 deque(deque&& __c) _NOEXCEPT_(is_nothrow_move_constructible<__base>::value); 1246 _LIBCPP_INLINE_VISIBILITY 1247 deque(deque&& __c, const allocator_type& __a); 1248 _LIBCPP_INLINE_VISIBILITY 1249 deque& operator=(deque&& __c) 1250 _NOEXCEPT_(__alloc_traits::propagate_on_container_move_assignment::value && 1251 is_nothrow_move_assignable<allocator_type>::value); 1252 1253 _LIBCPP_INLINE_VISIBILITY 1254 void assign(initializer_list<value_type> __il) {assign(__il.begin(), __il.end());} 1255#endif // _LIBCPP_CXX03_LANG 1256 1257 template <class _InputIter> 1258 void assign(_InputIter __f, _InputIter __l, 1259 typename enable_if<__is_input_iterator<_InputIter>::value && 1260 !__is_random_access_iterator<_InputIter>::value>::type* = 0); 1261 template <class _RAIter> 1262 void assign(_RAIter __f, _RAIter __l, 1263 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type* = 0); 1264 void assign(size_type __n, const value_type& __v); 1265 1266 _LIBCPP_INLINE_VISIBILITY 1267 allocator_type get_allocator() const _NOEXCEPT; 1268 1269 // iterators: 1270 1271 _LIBCPP_INLINE_VISIBILITY 1272 iterator begin() _NOEXCEPT {return __base::begin();} 1273 _LIBCPP_INLINE_VISIBILITY 1274 const_iterator begin() const _NOEXCEPT {return __base::begin();} 1275 _LIBCPP_INLINE_VISIBILITY 1276 iterator end() _NOEXCEPT {return __base::end();} 1277 _LIBCPP_INLINE_VISIBILITY 1278 const_iterator end() const _NOEXCEPT {return __base::end();} 1279 1280 _LIBCPP_INLINE_VISIBILITY 1281 reverse_iterator rbegin() _NOEXCEPT 1282 {return reverse_iterator(__base::end());} 1283 _LIBCPP_INLINE_VISIBILITY 1284 const_reverse_iterator rbegin() const _NOEXCEPT 1285 {return const_reverse_iterator(__base::end());} 1286 _LIBCPP_INLINE_VISIBILITY 1287 reverse_iterator rend() _NOEXCEPT 1288 {return reverse_iterator(__base::begin());} 1289 _LIBCPP_INLINE_VISIBILITY 1290 const_reverse_iterator rend() const _NOEXCEPT 1291 {return const_reverse_iterator(__base::begin());} 1292 1293 _LIBCPP_INLINE_VISIBILITY 1294 const_iterator cbegin() const _NOEXCEPT 1295 {return __base::begin();} 1296 _LIBCPP_INLINE_VISIBILITY 1297 const_iterator cend() const _NOEXCEPT 1298 {return __base::end();} 1299 _LIBCPP_INLINE_VISIBILITY 1300 const_reverse_iterator crbegin() const _NOEXCEPT 1301 {return const_reverse_iterator(__base::end());} 1302 _LIBCPP_INLINE_VISIBILITY 1303 const_reverse_iterator crend() const _NOEXCEPT 1304 {return const_reverse_iterator(__base::begin());} 1305 1306 // capacity: 1307 _LIBCPP_INLINE_VISIBILITY 1308 size_type size() const _NOEXCEPT {return __base::size();} 1309 _LIBCPP_INLINE_VISIBILITY 1310 size_type max_size() const _NOEXCEPT 1311 {return std::min<size_type>( 1312 __alloc_traits::max_size(__base::__alloc()), 1313 numeric_limits<difference_type>::max());} 1314 void resize(size_type __n); 1315 void resize(size_type __n, const value_type& __v); 1316 void shrink_to_fit() _NOEXCEPT; 1317 _LIBCPP_INLINE_VISIBILITY 1318 bool empty() const _NOEXCEPT {return __base::size() == 0;} 1319 1320 // element access: 1321 _LIBCPP_INLINE_VISIBILITY 1322 reference operator[](size_type __i); 1323 _LIBCPP_INLINE_VISIBILITY 1324 const_reference operator[](size_type __i) const; 1325 _LIBCPP_INLINE_VISIBILITY 1326 reference at(size_type __i); 1327 _LIBCPP_INLINE_VISIBILITY 1328 const_reference at(size_type __i) const; 1329 _LIBCPP_INLINE_VISIBILITY 1330 reference front(); 1331 _LIBCPP_INLINE_VISIBILITY 1332 const_reference front() const; 1333 _LIBCPP_INLINE_VISIBILITY 1334 reference back(); 1335 _LIBCPP_INLINE_VISIBILITY 1336 const_reference back() const; 1337 1338 // 23.2.2.3 modifiers: 1339 void push_front(const value_type& __v); 1340 void push_back(const value_type& __v); 1341#ifndef _LIBCPP_CXX03_LANG 1342#if _LIBCPP_STD_VER > 14 1343 template <class... _Args> reference emplace_front(_Args&&... __args); 1344 template <class... _Args> reference emplace_back (_Args&&... __args); 1345#else 1346 template <class... _Args> void emplace_front(_Args&&... __args); 1347 template <class... _Args> void emplace_back (_Args&&... __args); 1348#endif 1349 template <class... _Args> iterator emplace(const_iterator __p, _Args&&... __args); 1350 1351 void push_front(value_type&& __v); 1352 void push_back(value_type&& __v); 1353 iterator insert(const_iterator __p, value_type&& __v); 1354 1355 _LIBCPP_INLINE_VISIBILITY 1356 iterator insert(const_iterator __p, initializer_list<value_type> __il) 1357 {return insert(__p, __il.begin(), __il.end());} 1358#endif // _LIBCPP_CXX03_LANG 1359 1360 iterator insert(const_iterator __p, const value_type& __v); 1361 iterator insert(const_iterator __p, size_type __n, const value_type& __v); 1362 template <class _InputIter> 1363 iterator insert(const_iterator __p, _InputIter __f, _InputIter __l, 1364 typename enable_if<__is_input_iterator<_InputIter>::value 1365 &&!__is_forward_iterator<_InputIter>::value>::type* = 0); 1366 template <class _ForwardIterator> 1367 iterator insert(const_iterator __p, _ForwardIterator __f, _ForwardIterator __l, 1368 typename enable_if<__is_forward_iterator<_ForwardIterator>::value 1369 &&!__is_bidirectional_iterator<_ForwardIterator>::value>::type* = 0); 1370 template <class _BiIter> 1371 iterator insert(const_iterator __p, _BiIter __f, _BiIter __l, 1372 typename enable_if<__is_bidirectional_iterator<_BiIter>::value>::type* = 0); 1373 1374 void pop_front(); 1375 void pop_back(); 1376 iterator erase(const_iterator __p); 1377 iterator erase(const_iterator __f, const_iterator __l); 1378 1379 _LIBCPP_INLINE_VISIBILITY 1380 void swap(deque& __c) 1381#if _LIBCPP_STD_VER >= 14 1382 _NOEXCEPT; 1383#else 1384 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 1385 __is_nothrow_swappable<allocator_type>::value); 1386#endif 1387 _LIBCPP_INLINE_VISIBILITY 1388 void clear() _NOEXCEPT; 1389 1390 _LIBCPP_INLINE_VISIBILITY 1391 bool __invariants() const {return __base::__invariants();} 1392private: 1393 typedef typename __base::__map_const_pointer __map_const_pointer; 1394 1395 _LIBCPP_INLINE_VISIBILITY 1396 static size_type __recommend_blocks(size_type __n) 1397 { 1398 return __n / __base::__block_size + (__n % __base::__block_size != 0); 1399 } 1400 _LIBCPP_INLINE_VISIBILITY 1401 size_type __capacity() const 1402 { 1403 return __base::__map_.size() == 0 ? 0 : __base::__map_.size() * __base::__block_size - 1; 1404 } 1405 _LIBCPP_INLINE_VISIBILITY 1406 size_type __front_spare() const 1407 { 1408 return __base::__start_; 1409 } 1410 _LIBCPP_INLINE_VISIBILITY 1411 size_type __back_spare() const 1412 { 1413 return __capacity() - (__base::__start_ + __base::size()); 1414 } 1415 1416 template <class _InpIter> 1417 void __append(_InpIter __f, _InpIter __l, 1418 typename enable_if<__is_input_iterator<_InpIter>::value && 1419 !__is_forward_iterator<_InpIter>::value>::type* = 0); 1420 template <class _ForIter> 1421 void __append(_ForIter __f, _ForIter __l, 1422 typename enable_if<__is_forward_iterator<_ForIter>::value>::type* = 0); 1423 void __append(size_type __n); 1424 void __append(size_type __n, const value_type& __v); 1425 void __erase_to_end(const_iterator __f); 1426 void __add_front_capacity(); 1427 void __add_front_capacity(size_type __n); 1428 void __add_back_capacity(); 1429 void __add_back_capacity(size_type __n); 1430 iterator __move_and_check(iterator __f, iterator __l, iterator __r, 1431 const_pointer& __vt); 1432 iterator __move_backward_and_check(iterator __f, iterator __l, iterator __r, 1433 const_pointer& __vt); 1434 void __move_construct_and_check(iterator __f, iterator __l, 1435 iterator __r, const_pointer& __vt); 1436 void __move_construct_backward_and_check(iterator __f, iterator __l, 1437 iterator __r, const_pointer& __vt); 1438 1439 _LIBCPP_INLINE_VISIBILITY 1440 void __copy_assign_alloc(const deque& __c) 1441 {__copy_assign_alloc(__c, integral_constant<bool, 1442 __alloc_traits::propagate_on_container_copy_assignment::value>());} 1443 1444 _LIBCPP_INLINE_VISIBILITY 1445 void __copy_assign_alloc(const deque& __c, true_type) 1446 { 1447 if (__base::__alloc() != __c.__alloc()) 1448 { 1449 clear(); 1450 shrink_to_fit(); 1451 } 1452 __base::__alloc() = __c.__alloc(); 1453 __base::__map_.__alloc() = __c.__map_.__alloc(); 1454 } 1455 1456 _LIBCPP_INLINE_VISIBILITY 1457 void __copy_assign_alloc(const deque&, false_type) 1458 {} 1459 1460 void __move_assign(deque& __c, true_type) 1461 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value); 1462 void __move_assign(deque& __c, false_type); 1463}; 1464 1465template <class _Tp, class _Allocator> 1466deque<_Tp, _Allocator>::deque(size_type __n) 1467{ 1468 if (__n > 0) 1469 __append(__n); 1470} 1471 1472#if _LIBCPP_STD_VER > 11 1473template <class _Tp, class _Allocator> 1474deque<_Tp, _Allocator>::deque(size_type __n, const _Allocator& __a) 1475 : __base(__a) 1476{ 1477 if (__n > 0) 1478 __append(__n); 1479} 1480#endif 1481 1482template <class _Tp, class _Allocator> 1483deque<_Tp, _Allocator>::deque(size_type __n, const value_type& __v) 1484{ 1485 if (__n > 0) 1486 __append(__n, __v); 1487} 1488 1489template <class _Tp, class _Allocator> 1490deque<_Tp, _Allocator>::deque(size_type __n, const value_type& __v, const allocator_type& __a) 1491 : __base(__a) 1492{ 1493 if (__n > 0) 1494 __append(__n, __v); 1495} 1496 1497template <class _Tp, class _Allocator> 1498template <class _InputIter> 1499deque<_Tp, _Allocator>::deque(_InputIter __f, _InputIter __l, 1500 typename enable_if<__is_input_iterator<_InputIter>::value>::type*) 1501{ 1502 __append(__f, __l); 1503} 1504 1505template <class _Tp, class _Allocator> 1506template <class _InputIter> 1507deque<_Tp, _Allocator>::deque(_InputIter __f, _InputIter __l, const allocator_type& __a, 1508 typename enable_if<__is_input_iterator<_InputIter>::value>::type*) 1509 : __base(__a) 1510{ 1511 __append(__f, __l); 1512} 1513 1514template <class _Tp, class _Allocator> 1515deque<_Tp, _Allocator>::deque(const deque& __c) 1516 : __base(__alloc_traits::select_on_container_copy_construction(__c.__alloc())) 1517{ 1518 __append(__c.begin(), __c.end()); 1519} 1520 1521template <class _Tp, class _Allocator> 1522deque<_Tp, _Allocator>::deque(const deque& __c, const allocator_type& __a) 1523 : __base(__a) 1524{ 1525 __append(__c.begin(), __c.end()); 1526} 1527 1528template <class _Tp, class _Allocator> 1529deque<_Tp, _Allocator>& 1530deque<_Tp, _Allocator>::operator=(const deque& __c) 1531{ 1532 if (this != &__c) 1533 { 1534 __copy_assign_alloc(__c); 1535 assign(__c.begin(), __c.end()); 1536 } 1537 return *this; 1538} 1539 1540#ifndef _LIBCPP_CXX03_LANG 1541 1542template <class _Tp, class _Allocator> 1543deque<_Tp, _Allocator>::deque(initializer_list<value_type> __il) 1544{ 1545 __append(__il.begin(), __il.end()); 1546} 1547 1548template <class _Tp, class _Allocator> 1549deque<_Tp, _Allocator>::deque(initializer_list<value_type> __il, const allocator_type& __a) 1550 : __base(__a) 1551{ 1552 __append(__il.begin(), __il.end()); 1553} 1554 1555template <class _Tp, class _Allocator> 1556inline 1557deque<_Tp, _Allocator>::deque(deque&& __c) 1558 _NOEXCEPT_(is_nothrow_move_constructible<__base>::value) 1559 : __base(_VSTD::move(__c)) 1560{ 1561} 1562 1563template <class _Tp, class _Allocator> 1564inline 1565deque<_Tp, _Allocator>::deque(deque&& __c, const allocator_type& __a) 1566 : __base(_VSTD::move(__c), __a) 1567{ 1568 if (__a != __c.__alloc()) 1569 { 1570 typedef move_iterator<iterator> _Ip; 1571 assign(_Ip(__c.begin()), _Ip(__c.end())); 1572 } 1573} 1574 1575template <class _Tp, class _Allocator> 1576inline 1577deque<_Tp, _Allocator>& 1578deque<_Tp, _Allocator>::operator=(deque&& __c) 1579 _NOEXCEPT_(__alloc_traits::propagate_on_container_move_assignment::value && 1580 is_nothrow_move_assignable<allocator_type>::value) 1581{ 1582 __move_assign(__c, integral_constant<bool, 1583 __alloc_traits::propagate_on_container_move_assignment::value>()); 1584 return *this; 1585} 1586 1587template <class _Tp, class _Allocator> 1588void 1589deque<_Tp, _Allocator>::__move_assign(deque& __c, false_type) 1590{ 1591 if (__base::__alloc() != __c.__alloc()) 1592 { 1593 typedef move_iterator<iterator> _Ip; 1594 assign(_Ip(__c.begin()), _Ip(__c.end())); 1595 } 1596 else 1597 __move_assign(__c, true_type()); 1598} 1599 1600template <class _Tp, class _Allocator> 1601void 1602deque<_Tp, _Allocator>::__move_assign(deque& __c, true_type) 1603 _NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) 1604{ 1605 clear(); 1606 shrink_to_fit(); 1607 __base::__move_assign(__c); 1608} 1609 1610#endif // _LIBCPP_CXX03_LANG 1611 1612template <class _Tp, class _Allocator> 1613template <class _InputIter> 1614void 1615deque<_Tp, _Allocator>::assign(_InputIter __f, _InputIter __l, 1616 typename enable_if<__is_input_iterator<_InputIter>::value && 1617 !__is_random_access_iterator<_InputIter>::value>::type*) 1618{ 1619 iterator __i = __base::begin(); 1620 iterator __e = __base::end(); 1621 for (; __f != __l && __i != __e; ++__f, (void) ++__i) 1622 *__i = *__f; 1623 if (__f != __l) 1624 __append(__f, __l); 1625 else 1626 __erase_to_end(__i); 1627} 1628 1629template <class _Tp, class _Allocator> 1630template <class _RAIter> 1631void 1632deque<_Tp, _Allocator>::assign(_RAIter __f, _RAIter __l, 1633 typename enable_if<__is_random_access_iterator<_RAIter>::value>::type*) 1634{ 1635 if (static_cast<size_type>(__l - __f) > __base::size()) 1636 { 1637 _RAIter __m = __f + __base::size(); 1638 _VSTD::copy(__f, __m, __base::begin()); 1639 __append(__m, __l); 1640 } 1641 else 1642 __erase_to_end(_VSTD::copy(__f, __l, __base::begin())); 1643} 1644 1645template <class _Tp, class _Allocator> 1646void 1647deque<_Tp, _Allocator>::assign(size_type __n, const value_type& __v) 1648{ 1649 if (__n > __base::size()) 1650 { 1651 _VSTD::fill_n(__base::begin(), __base::size(), __v); 1652 __n -= __base::size(); 1653 __append(__n, __v); 1654 } 1655 else 1656 __erase_to_end(_VSTD::fill_n(__base::begin(), __n, __v)); 1657} 1658 1659template <class _Tp, class _Allocator> 1660inline 1661_Allocator 1662deque<_Tp, _Allocator>::get_allocator() const _NOEXCEPT 1663{ 1664 return __base::__alloc(); 1665} 1666 1667template <class _Tp, class _Allocator> 1668void 1669deque<_Tp, _Allocator>::resize(size_type __n) 1670{ 1671 if (__n > __base::size()) 1672 __append(__n - __base::size()); 1673 else if (__n < __base::size()) 1674 __erase_to_end(__base::begin() + __n); 1675} 1676 1677template <class _Tp, class _Allocator> 1678void 1679deque<_Tp, _Allocator>::resize(size_type __n, const value_type& __v) 1680{ 1681 if (__n > __base::size()) 1682 __append(__n - __base::size(), __v); 1683 else if (__n < __base::size()) 1684 __erase_to_end(__base::begin() + __n); 1685} 1686 1687template <class _Tp, class _Allocator> 1688void 1689deque<_Tp, _Allocator>::shrink_to_fit() _NOEXCEPT 1690{ 1691 allocator_type& __a = __base::__alloc(); 1692 if (empty()) 1693 { 1694 while (__base::__map_.size() > 0) 1695 { 1696 __alloc_traits::deallocate(__a, __base::__map_.back(), __base::__block_size); 1697 __base::__map_.pop_back(); 1698 } 1699 __base::__start_ = 0; 1700 } 1701 else 1702 { 1703 if (__front_spare() >= __base::__block_size) 1704 { 1705 __alloc_traits::deallocate(__a, __base::__map_.front(), __base::__block_size); 1706 __base::__map_.pop_front(); 1707 __base::__start_ -= __base::__block_size; 1708 } 1709 if (__back_spare() >= __base::__block_size) 1710 { 1711 __alloc_traits::deallocate(__a, __base::__map_.back(), __base::__block_size); 1712 __base::__map_.pop_back(); 1713 } 1714 } 1715 __base::__map_.shrink_to_fit(); 1716} 1717 1718template <class _Tp, class _Allocator> 1719inline 1720typename deque<_Tp, _Allocator>::reference 1721deque<_Tp, _Allocator>::operator[](size_type __i) 1722{ 1723 size_type __p = __base::__start_ + __i; 1724 return *(*(__base::__map_.begin() + __p / __base::__block_size) + __p % __base::__block_size); 1725} 1726 1727template <class _Tp, class _Allocator> 1728inline 1729typename deque<_Tp, _Allocator>::const_reference 1730deque<_Tp, _Allocator>::operator[](size_type __i) const 1731{ 1732 size_type __p = __base::__start_ + __i; 1733 return *(*(__base::__map_.begin() + __p / __base::__block_size) + __p % __base::__block_size); 1734} 1735 1736template <class _Tp, class _Allocator> 1737inline 1738typename deque<_Tp, _Allocator>::reference 1739deque<_Tp, _Allocator>::at(size_type __i) 1740{ 1741 if (__i >= __base::size()) 1742 __base::__throw_out_of_range(); 1743 size_type __p = __base::__start_ + __i; 1744 return *(*(__base::__map_.begin() + __p / __base::__block_size) + __p % __base::__block_size); 1745} 1746 1747template <class _Tp, class _Allocator> 1748inline 1749typename deque<_Tp, _Allocator>::const_reference 1750deque<_Tp, _Allocator>::at(size_type __i) const 1751{ 1752 if (__i >= __base::size()) 1753 __base::__throw_out_of_range(); 1754 size_type __p = __base::__start_ + __i; 1755 return *(*(__base::__map_.begin() + __p / __base::__block_size) + __p % __base::__block_size); 1756} 1757 1758template <class _Tp, class _Allocator> 1759inline 1760typename deque<_Tp, _Allocator>::reference 1761deque<_Tp, _Allocator>::front() 1762{ 1763 return *(*(__base::__map_.begin() + __base::__start_ / __base::__block_size) 1764 + __base::__start_ % __base::__block_size); 1765} 1766 1767template <class _Tp, class _Allocator> 1768inline 1769typename deque<_Tp, _Allocator>::const_reference 1770deque<_Tp, _Allocator>::front() const 1771{ 1772 return *(*(__base::__map_.begin() + __base::__start_ / __base::__block_size) 1773 + __base::__start_ % __base::__block_size); 1774} 1775 1776template <class _Tp, class _Allocator> 1777inline 1778typename deque<_Tp, _Allocator>::reference 1779deque<_Tp, _Allocator>::back() 1780{ 1781 size_type __p = __base::size() + __base::__start_ - 1; 1782 return *(*(__base::__map_.begin() + __p / __base::__block_size) + __p % __base::__block_size); 1783} 1784 1785template <class _Tp, class _Allocator> 1786inline 1787typename deque<_Tp, _Allocator>::const_reference 1788deque<_Tp, _Allocator>::back() const 1789{ 1790 size_type __p = __base::size() + __base::__start_ - 1; 1791 return *(*(__base::__map_.begin() + __p / __base::__block_size) + __p % __base::__block_size); 1792} 1793 1794template <class _Tp, class _Allocator> 1795void 1796deque<_Tp, _Allocator>::push_back(const value_type& __v) 1797{ 1798 allocator_type& __a = __base::__alloc(); 1799 if (__back_spare() == 0) 1800 __add_back_capacity(); 1801 // __back_spare() >= 1 1802 __alloc_traits::construct(__a, _VSTD::addressof(*__base::end()), __v); 1803 ++__base::size(); 1804} 1805 1806template <class _Tp, class _Allocator> 1807void 1808deque<_Tp, _Allocator>::push_front(const value_type& __v) 1809{ 1810 allocator_type& __a = __base::__alloc(); 1811 if (__front_spare() == 0) 1812 __add_front_capacity(); 1813 // __front_spare() >= 1 1814 __alloc_traits::construct(__a, _VSTD::addressof(*--__base::begin()), __v); 1815 --__base::__start_; 1816 ++__base::size(); 1817} 1818 1819#ifndef _LIBCPP_CXX03_LANG 1820template <class _Tp, class _Allocator> 1821void 1822deque<_Tp, _Allocator>::push_back(value_type&& __v) 1823{ 1824 allocator_type& __a = __base::__alloc(); 1825 if (__back_spare() == 0) 1826 __add_back_capacity(); 1827 // __back_spare() >= 1 1828 __alloc_traits::construct(__a, _VSTD::addressof(*__base::end()), _VSTD::move(__v)); 1829 ++__base::size(); 1830} 1831 1832template <class _Tp, class _Allocator> 1833template <class... _Args> 1834#if _LIBCPP_STD_VER > 14 1835typename deque<_Tp, _Allocator>::reference 1836#else 1837void 1838#endif 1839deque<_Tp, _Allocator>::emplace_back(_Args&&... __args) 1840{ 1841 allocator_type& __a = __base::__alloc(); 1842 if (__back_spare() == 0) 1843 __add_back_capacity(); 1844 // __back_spare() >= 1 1845 __alloc_traits::construct(__a, _VSTD::addressof(*__base::end()), 1846 _VSTD::forward<_Args>(__args)...); 1847 ++__base::size(); 1848#if _LIBCPP_STD_VER > 14 1849 return *--__base::end(); 1850#endif 1851} 1852 1853template <class _Tp, class _Allocator> 1854void 1855deque<_Tp, _Allocator>::push_front(value_type&& __v) 1856{ 1857 allocator_type& __a = __base::__alloc(); 1858 if (__front_spare() == 0) 1859 __add_front_capacity(); 1860 // __front_spare() >= 1 1861 __alloc_traits::construct(__a, _VSTD::addressof(*--__base::begin()), _VSTD::move(__v)); 1862 --__base::__start_; 1863 ++__base::size(); 1864} 1865 1866 1867template <class _Tp, class _Allocator> 1868template <class... _Args> 1869#if _LIBCPP_STD_VER > 14 1870typename deque<_Tp, _Allocator>::reference 1871#else 1872void 1873#endif 1874deque<_Tp, _Allocator>::emplace_front(_Args&&... __args) 1875{ 1876 allocator_type& __a = __base::__alloc(); 1877 if (__front_spare() == 0) 1878 __add_front_capacity(); 1879 // __front_spare() >= 1 1880 __alloc_traits::construct(__a, _VSTD::addressof(*--__base::begin()), _VSTD::forward<_Args>(__args)...); 1881 --__base::__start_; 1882 ++__base::size(); 1883#if _LIBCPP_STD_VER > 14 1884 return *__base::begin(); 1885#endif 1886} 1887 1888template <class _Tp, class _Allocator> 1889typename deque<_Tp, _Allocator>::iterator 1890deque<_Tp, _Allocator>::insert(const_iterator __p, value_type&& __v) 1891{ 1892 size_type __pos = __p - __base::begin(); 1893 size_type __to_end = __base::size() - __pos; 1894 allocator_type& __a = __base::__alloc(); 1895 if (__pos < __to_end) 1896 { // insert by shifting things backward 1897 if (__front_spare() == 0) 1898 __add_front_capacity(); 1899 // __front_spare() >= 1 1900 if (__pos == 0) 1901 { 1902 __alloc_traits::construct(__a, _VSTD::addressof(*--__base::begin()), _VSTD::move(__v)); 1903 --__base::__start_; 1904 ++__base::size(); 1905 } 1906 else 1907 { 1908 iterator __b = __base::begin(); 1909 iterator __bm1 = _VSTD::prev(__b); 1910 __alloc_traits::construct(__a, _VSTD::addressof(*__bm1), _VSTD::move(*__b)); 1911 --__base::__start_; 1912 ++__base::size(); 1913 if (__pos > 1) 1914 __b = _VSTD::move(_VSTD::next(__b), __b + __pos, __b); 1915 *__b = _VSTD::move(__v); 1916 } 1917 } 1918 else 1919 { // insert by shifting things forward 1920 if (__back_spare() == 0) 1921 __add_back_capacity(); 1922 // __back_capacity >= 1 1923 size_type __de = __base::size() - __pos; 1924 if (__de == 0) 1925 { 1926 __alloc_traits::construct(__a, _VSTD::addressof(*__base::end()), _VSTD::move(__v)); 1927 ++__base::size(); 1928 } 1929 else 1930 { 1931 iterator __e = __base::end(); 1932 iterator __em1 = _VSTD::prev(__e); 1933 __alloc_traits::construct(__a, _VSTD::addressof(*__e), _VSTD::move(*__em1)); 1934 ++__base::size(); 1935 if (__de > 1) 1936 __e = _VSTD::move_backward(__e - __de, __em1, __e); 1937 *--__e = _VSTD::move(__v); 1938 } 1939 } 1940 return __base::begin() + __pos; 1941} 1942 1943template <class _Tp, class _Allocator> 1944template <class... _Args> 1945typename deque<_Tp, _Allocator>::iterator 1946deque<_Tp, _Allocator>::emplace(const_iterator __p, _Args&&... __args) 1947{ 1948 size_type __pos = __p - __base::begin(); 1949 size_type __to_end = __base::size() - __pos; 1950 allocator_type& __a = __base::__alloc(); 1951 if (__pos < __to_end) 1952 { // insert by shifting things backward 1953 if (__front_spare() == 0) 1954 __add_front_capacity(); 1955 // __front_spare() >= 1 1956 if (__pos == 0) 1957 { 1958 __alloc_traits::construct(__a, _VSTD::addressof(*--__base::begin()), _VSTD::forward<_Args>(__args)...); 1959 --__base::__start_; 1960 ++__base::size(); 1961 } 1962 else 1963 { 1964 __temp_value<value_type, _Allocator> __tmp(this->__alloc(), _VSTD::forward<_Args>(__args)...); 1965 iterator __b = __base::begin(); 1966 iterator __bm1 = _VSTD::prev(__b); 1967 __alloc_traits::construct(__a, _VSTD::addressof(*__bm1), _VSTD::move(*__b)); 1968 --__base::__start_; 1969 ++__base::size(); 1970 if (__pos > 1) 1971 __b = _VSTD::move(_VSTD::next(__b), __b + __pos, __b); 1972 *__b = _VSTD::move(__tmp.get()); 1973 } 1974 } 1975 else 1976 { // insert by shifting things forward 1977 if (__back_spare() == 0) 1978 __add_back_capacity(); 1979 // __back_capacity >= 1 1980 size_type __de = __base::size() - __pos; 1981 if (__de == 0) 1982 { 1983 __alloc_traits::construct(__a, _VSTD::addressof(*__base::end()), _VSTD::forward<_Args>(__args)...); 1984 ++__base::size(); 1985 } 1986 else 1987 { 1988 __temp_value<value_type, _Allocator> __tmp(this->__alloc(), _VSTD::forward<_Args>(__args)...); 1989 iterator __e = __base::end(); 1990 iterator __em1 = _VSTD::prev(__e); 1991 __alloc_traits::construct(__a, _VSTD::addressof(*__e), _VSTD::move(*__em1)); 1992 ++__base::size(); 1993 if (__de > 1) 1994 __e = _VSTD::move_backward(__e - __de, __em1, __e); 1995 *--__e = _VSTD::move(__tmp.get()); 1996 } 1997 } 1998 return __base::begin() + __pos; 1999} 2000 2001#endif // _LIBCPP_CXX03_LANG 2002 2003 2004template <class _Tp, class _Allocator> 2005typename deque<_Tp, _Allocator>::iterator 2006deque<_Tp, _Allocator>::insert(const_iterator __p, const value_type& __v) 2007{ 2008 size_type __pos = __p - __base::begin(); 2009 size_type __to_end = __base::size() - __pos; 2010 allocator_type& __a = __base::__alloc(); 2011 if (__pos < __to_end) 2012 { // insert by shifting things backward 2013 if (__front_spare() == 0) 2014 __add_front_capacity(); 2015 // __front_spare() >= 1 2016 if (__pos == 0) 2017 { 2018 __alloc_traits::construct(__a, _VSTD::addressof(*--__base::begin()), __v); 2019 --__base::__start_; 2020 ++__base::size(); 2021 } 2022 else 2023 { 2024 const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v); 2025 iterator __b = __base::begin(); 2026 iterator __bm1 = _VSTD::prev(__b); 2027 if (__vt == pointer_traits<const_pointer>::pointer_to(*__b)) 2028 __vt = pointer_traits<const_pointer>::pointer_to(*__bm1); 2029 __alloc_traits::construct(__a, _VSTD::addressof(*__bm1), _VSTD::move(*__b)); 2030 --__base::__start_; 2031 ++__base::size(); 2032 if (__pos > 1) 2033 __b = __move_and_check(_VSTD::next(__b), __b + __pos, __b, __vt); 2034 *__b = *__vt; 2035 } 2036 } 2037 else 2038 { // insert by shifting things forward 2039 if (__back_spare() == 0) 2040 __add_back_capacity(); 2041 // __back_capacity >= 1 2042 size_type __de = __base::size() - __pos; 2043 if (__de == 0) 2044 { 2045 __alloc_traits::construct(__a, _VSTD::addressof(*__base::end()), __v); 2046 ++__base::size(); 2047 } 2048 else 2049 { 2050 const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v); 2051 iterator __e = __base::end(); 2052 iterator __em1 = _VSTD::prev(__e); 2053 if (__vt == pointer_traits<const_pointer>::pointer_to(*__em1)) 2054 __vt = pointer_traits<const_pointer>::pointer_to(*__e); 2055 __alloc_traits::construct(__a, _VSTD::addressof(*__e), _VSTD::move(*__em1)); 2056 ++__base::size(); 2057 if (__de > 1) 2058 __e = __move_backward_and_check(__e - __de, __em1, __e, __vt); 2059 *--__e = *__vt; 2060 } 2061 } 2062 return __base::begin() + __pos; 2063} 2064 2065template <class _Tp, class _Allocator> 2066typename deque<_Tp, _Allocator>::iterator 2067deque<_Tp, _Allocator>::insert(const_iterator __p, size_type __n, const value_type& __v) 2068{ 2069 size_type __pos = __p - __base::begin(); 2070 size_type __to_end = __base::size() - __pos; 2071 allocator_type& __a = __base::__alloc(); 2072 if (__pos < __to_end) 2073 { // insert by shifting things backward 2074 if (__n > __front_spare()) 2075 __add_front_capacity(__n - __front_spare()); 2076 // __n <= __front_spare() 2077 iterator __old_begin = __base::begin(); 2078 iterator __i = __old_begin; 2079 if (__n > __pos) 2080 { 2081 for (size_type __m = __n - __pos; __m; --__m, --__base::__start_, ++__base::size()) 2082 __alloc_traits::construct(__a, _VSTD::addressof(*--__i), __v); 2083 __n = __pos; 2084 } 2085 if (__n > 0) 2086 { 2087 const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v); 2088 iterator __obn = __old_begin + __n; 2089 __move_construct_backward_and_check(__old_begin, __obn, __i, __vt); 2090 if (__n < __pos) 2091 __old_begin = __move_and_check(__obn, __old_begin + __pos, __old_begin, __vt); 2092 _VSTD::fill_n(__old_begin, __n, *__vt); 2093 } 2094 } 2095 else 2096 { // insert by shifting things forward 2097 size_type __back_capacity = __back_spare(); 2098 if (__n > __back_capacity) 2099 __add_back_capacity(__n - __back_capacity); 2100 // __n <= __back_capacity 2101 iterator __old_end = __base::end(); 2102 iterator __i = __old_end; 2103 size_type __de = __base::size() - __pos; 2104 if (__n > __de) 2105 { 2106 for (size_type __m = __n - __de; __m; --__m, ++__i, ++__base::size()) 2107 __alloc_traits::construct(__a, _VSTD::addressof(*__i), __v); 2108 __n = __de; 2109 } 2110 if (__n > 0) 2111 { 2112 const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v); 2113 iterator __oen = __old_end - __n; 2114 __move_construct_and_check(__oen, __old_end, __i, __vt); 2115 if (__n < __de) 2116 __old_end = __move_backward_and_check(__old_end - __de, __oen, __old_end, __vt); 2117 _VSTD::fill_n(__old_end - __n, __n, *__vt); 2118 } 2119 } 2120 return __base::begin() + __pos; 2121} 2122 2123template <class _Tp, class _Allocator> 2124template <class _InputIter> 2125typename deque<_Tp, _Allocator>::iterator 2126deque<_Tp, _Allocator>::insert(const_iterator __p, _InputIter __f, _InputIter __l, 2127 typename enable_if<__is_input_iterator<_InputIter>::value 2128 &&!__is_forward_iterator<_InputIter>::value>::type*) 2129{ 2130 __split_buffer<value_type, allocator_type&> __buf(__base::__alloc()); 2131 __buf.__construct_at_end(__f, __l); 2132 typedef typename __split_buffer<value_type, allocator_type&>::iterator __bi; 2133 return insert(__p, move_iterator<__bi>(__buf.begin()), move_iterator<__bi>(__buf.end())); 2134} 2135 2136template <class _Tp, class _Allocator> 2137template <class _ForwardIterator> 2138typename deque<_Tp, _Allocator>::iterator 2139deque<_Tp, _Allocator>::insert(const_iterator __p, _ForwardIterator __f, _ForwardIterator __l, 2140 typename enable_if<__is_forward_iterator<_ForwardIterator>::value 2141 &&!__is_bidirectional_iterator<_ForwardIterator>::value>::type*) 2142{ 2143 size_type __n = _VSTD::distance(__f, __l); 2144 __split_buffer<value_type, allocator_type&> __buf(__n, 0, __base::__alloc()); 2145 __buf.__construct_at_end(__f, __l); 2146 typedef typename __split_buffer<value_type, allocator_type&>::iterator __fwd; 2147 return insert(__p, move_iterator<__fwd>(__buf.begin()), move_iterator<__fwd>(__buf.end())); 2148} 2149 2150template <class _Tp, class _Allocator> 2151template <class _BiIter> 2152typename deque<_Tp, _Allocator>::iterator 2153deque<_Tp, _Allocator>::insert(const_iterator __p, _BiIter __f, _BiIter __l, 2154 typename enable_if<__is_bidirectional_iterator<_BiIter>::value>::type*) 2155{ 2156 size_type __n = _VSTD::distance(__f, __l); 2157 size_type __pos = __p - __base::begin(); 2158 size_type __to_end = __base::size() - __pos; 2159 allocator_type& __a = __base::__alloc(); 2160 if (__pos < __to_end) 2161 { // insert by shifting things backward 2162 if (__n > __front_spare()) 2163 __add_front_capacity(__n - __front_spare()); 2164 // __n <= __front_spare() 2165 iterator __old_begin = __base::begin(); 2166 iterator __i = __old_begin; 2167 _BiIter __m = __f; 2168 if (__n > __pos) 2169 { 2170 __m = __pos < __n / 2 ? _VSTD::prev(__l, __pos) : _VSTD::next(__f, __n - __pos); 2171 for (_BiIter __j = __m; __j != __f; --__base::__start_, ++__base::size()) 2172 __alloc_traits::construct(__a, _VSTD::addressof(*--__i), *--__j); 2173 __n = __pos; 2174 } 2175 if (__n > 0) 2176 { 2177 iterator __obn = __old_begin + __n; 2178 for (iterator __j = __obn; __j != __old_begin;) 2179 { 2180 __alloc_traits::construct(__a, _VSTD::addressof(*--__i), _VSTD::move(*--__j)); 2181 --__base::__start_; 2182 ++__base::size(); 2183 } 2184 if (__n < __pos) 2185 __old_begin = _VSTD::move(__obn, __old_begin + __pos, __old_begin); 2186 _VSTD::copy(__m, __l, __old_begin); 2187 } 2188 } 2189 else 2190 { // insert by shifting things forward 2191 size_type __back_capacity = __back_spare(); 2192 if (__n > __back_capacity) 2193 __add_back_capacity(__n - __back_capacity); 2194 // __n <= __back_capacity 2195 iterator __old_end = __base::end(); 2196 iterator __i = __old_end; 2197 _BiIter __m = __l; 2198 size_type __de = __base::size() - __pos; 2199 if (__n > __de) 2200 { 2201 __m = __de < __n / 2 ? _VSTD::next(__f, __de) : _VSTD::prev(__l, __n - __de); 2202 for (_BiIter __j = __m; __j != __l; ++__i, (void) ++__j, ++__base::size()) 2203 __alloc_traits::construct(__a, _VSTD::addressof(*__i), *__j); 2204 __n = __de; 2205 } 2206 if (__n > 0) 2207 { 2208 iterator __oen = __old_end - __n; 2209 for (iterator __j = __oen; __j != __old_end; ++__i, ++__j, ++__base::size()) 2210 __alloc_traits::construct(__a, _VSTD::addressof(*__i), _VSTD::move(*__j)); 2211 if (__n < __de) 2212 __old_end = _VSTD::move_backward(__old_end - __de, __oen, __old_end); 2213 _VSTD::copy_backward(__f, __m, __old_end); 2214 } 2215 } 2216 return __base::begin() + __pos; 2217} 2218 2219template <class _Tp, class _Allocator> 2220template <class _InpIter> 2221void 2222deque<_Tp, _Allocator>::__append(_InpIter __f, _InpIter __l, 2223 typename enable_if<__is_input_iterator<_InpIter>::value && 2224 !__is_forward_iterator<_InpIter>::value>::type*) 2225{ 2226 for (; __f != __l; ++__f) 2227 push_back(*__f); 2228} 2229 2230template <class _Tp, class _Allocator> 2231template <class _ForIter> 2232void 2233deque<_Tp, _Allocator>::__append(_ForIter __f, _ForIter __l, 2234 typename enable_if<__is_forward_iterator<_ForIter>::value>::type*) 2235{ 2236 size_type __n = _VSTD::distance(__f, __l); 2237 allocator_type& __a = __base::__alloc(); 2238 size_type __back_capacity = __back_spare(); 2239 if (__n > __back_capacity) 2240 __add_back_capacity(__n - __back_capacity); 2241 // __n <= __back_capacity 2242 for (iterator __i = __base::end(); __f != __l; ++__i, (void) ++__f, ++__base::size()) 2243 __alloc_traits::construct(__a, _VSTD::addressof(*__i), *__f); 2244} 2245 2246template <class _Tp, class _Allocator> 2247void 2248deque<_Tp, _Allocator>::__append(size_type __n) 2249{ 2250 allocator_type& __a = __base::__alloc(); 2251 size_type __back_capacity = __back_spare(); 2252 if (__n > __back_capacity) 2253 __add_back_capacity(__n - __back_capacity); 2254 // __n <= __back_capacity 2255 for (iterator __i = __base::end(); __n; --__n, ++__i, ++__base::size()) 2256 __alloc_traits::construct(__a, _VSTD::addressof(*__i)); 2257} 2258 2259template <class _Tp, class _Allocator> 2260void 2261deque<_Tp, _Allocator>::__append(size_type __n, const value_type& __v) 2262{ 2263 allocator_type& __a = __base::__alloc(); 2264 size_type __back_capacity = __back_spare(); 2265 if (__n > __back_capacity) 2266 __add_back_capacity(__n - __back_capacity); 2267 // __n <= __back_capacity 2268 for (iterator __i = __base::end(); __n; --__n, ++__i, ++__base::size()) 2269 __alloc_traits::construct(__a, _VSTD::addressof(*__i), __v); 2270} 2271 2272// Create front capacity for one block of elements. 2273// Strong guarantee. Either do it or don't touch anything. 2274template <class _Tp, class _Allocator> 2275void 2276deque<_Tp, _Allocator>::__add_front_capacity() 2277{ 2278 allocator_type& __a = __base::__alloc(); 2279 if (__back_spare() >= __base::__block_size) 2280 { 2281 __base::__start_ += __base::__block_size; 2282 pointer __pt = __base::__map_.back(); 2283 __base::__map_.pop_back(); 2284 __base::__map_.push_front(__pt); 2285 } 2286 // Else if __base::__map_.size() < __base::__map_.capacity() then we need to allocate 1 buffer 2287 else if (__base::__map_.size() < __base::__map_.capacity()) 2288 { // we can put the new buffer into the map, but don't shift things around 2289 // until all buffers are allocated. If we throw, we don't need to fix 2290 // anything up (any added buffers are undetectible) 2291 if (__base::__map_.__front_spare() > 0) 2292 __base::__map_.push_front(__alloc_traits::allocate(__a, __base::__block_size)); 2293 else 2294 { 2295 __base::__map_.push_back(__alloc_traits::allocate(__a, __base::__block_size)); 2296 // Done allocating, reorder capacity 2297 pointer __pt = __base::__map_.back(); 2298 __base::__map_.pop_back(); 2299 __base::__map_.push_front(__pt); 2300 } 2301 __base::__start_ = __base::__map_.size() == 1 ? 2302 __base::__block_size / 2 : 2303 __base::__start_ + __base::__block_size; 2304 } 2305 // Else need to allocate 1 buffer, *and* we need to reallocate __map_. 2306 else 2307 { 2308 __split_buffer<pointer, typename __base::__pointer_allocator&> 2309 __buf(max<size_type>(2 * __base::__map_.capacity(), 1), 2310 0, __base::__map_.__alloc()); 2311 2312 typedef __allocator_destructor<_Allocator> _Dp; 2313 unique_ptr<pointer, _Dp> __hold( 2314 __alloc_traits::allocate(__a, __base::__block_size), 2315 _Dp(__a, __base::__block_size)); 2316 __buf.push_back(__hold.get()); 2317 __hold.release(); 2318 2319 for (typename __base::__map_pointer __i = __base::__map_.begin(); 2320 __i != __base::__map_.end(); ++__i) 2321 __buf.push_back(*__i); 2322 _VSTD::swap(__base::__map_.__first_, __buf.__first_); 2323 _VSTD::swap(__base::__map_.__begin_, __buf.__begin_); 2324 _VSTD::swap(__base::__map_.__end_, __buf.__end_); 2325 _VSTD::swap(__base::__map_.__end_cap(), __buf.__end_cap()); 2326 __base::__start_ = __base::__map_.size() == 1 ? 2327 __base::__block_size / 2 : 2328 __base::__start_ + __base::__block_size; 2329 } 2330} 2331 2332// Create front capacity for __n elements. 2333// Strong guarantee. Either do it or don't touch anything. 2334template <class _Tp, class _Allocator> 2335void 2336deque<_Tp, _Allocator>::__add_front_capacity(size_type __n) 2337{ 2338 allocator_type& __a = __base::__alloc(); 2339 size_type __nb = __recommend_blocks(__n + __base::__map_.empty()); 2340 // Number of unused blocks at back: 2341 size_type __back_capacity = __back_spare() / __base::__block_size; 2342 __back_capacity = _VSTD::min(__back_capacity, __nb); // don't take more than you need 2343 __nb -= __back_capacity; // number of blocks need to allocate 2344 // If __nb == 0, then we have sufficient capacity. 2345 if (__nb == 0) 2346 { 2347 __base::__start_ += __base::__block_size * __back_capacity; 2348 for (; __back_capacity > 0; --__back_capacity) 2349 { 2350 pointer __pt = __base::__map_.back(); 2351 __base::__map_.pop_back(); 2352 __base::__map_.push_front(__pt); 2353 } 2354 } 2355 // Else if __nb <= __map_.capacity() - __map_.size() then we need to allocate __nb buffers 2356 else if (__nb <= __base::__map_.capacity() - __base::__map_.size()) 2357 { // we can put the new buffers into the map, but don't shift things around 2358 // until all buffers are allocated. If we throw, we don't need to fix 2359 // anything up (any added buffers are undetectible) 2360 for (; __nb > 0; --__nb, __base::__start_ += __base::__block_size - (__base::__map_.size() == 1)) 2361 { 2362 if (__base::__map_.__front_spare() == 0) 2363 break; 2364 __base::__map_.push_front(__alloc_traits::allocate(__a, __base::__block_size)); 2365 } 2366 for (; __nb > 0; --__nb, ++__back_capacity) 2367 __base::__map_.push_back(__alloc_traits::allocate(__a, __base::__block_size)); 2368 // Done allocating, reorder capacity 2369 __base::__start_ += __back_capacity * __base::__block_size; 2370 for (; __back_capacity > 0; --__back_capacity) 2371 { 2372 pointer __pt = __base::__map_.back(); 2373 __base::__map_.pop_back(); 2374 __base::__map_.push_front(__pt); 2375 } 2376 } 2377 // Else need to allocate __nb buffers, *and* we need to reallocate __map_. 2378 else 2379 { 2380 size_type __ds = (__nb + __back_capacity) * __base::__block_size - __base::__map_.empty(); 2381 __split_buffer<pointer, typename __base::__pointer_allocator&> 2382 __buf(max<size_type>(2* __base::__map_.capacity(), 2383 __nb + __base::__map_.size()), 2384 0, __base::__map_.__alloc()); 2385#ifndef _LIBCPP_NO_EXCEPTIONS 2386 try 2387 { 2388#endif // _LIBCPP_NO_EXCEPTIONS 2389 for (; __nb > 0; --__nb) 2390 __buf.push_back(__alloc_traits::allocate(__a, __base::__block_size)); 2391#ifndef _LIBCPP_NO_EXCEPTIONS 2392 } 2393 catch (...) 2394 { 2395 for (typename __base::__map_pointer __i = __buf.begin(); 2396 __i != __buf.end(); ++__i) 2397 __alloc_traits::deallocate(__a, *__i, __base::__block_size); 2398 throw; 2399 } 2400#endif // _LIBCPP_NO_EXCEPTIONS 2401 for (; __back_capacity > 0; --__back_capacity) 2402 { 2403 __buf.push_back(__base::__map_.back()); 2404 __base::__map_.pop_back(); 2405 } 2406 for (typename __base::__map_pointer __i = __base::__map_.begin(); 2407 __i != __base::__map_.end(); ++__i) 2408 __buf.push_back(*__i); 2409 _VSTD::swap(__base::__map_.__first_, __buf.__first_); 2410 _VSTD::swap(__base::__map_.__begin_, __buf.__begin_); 2411 _VSTD::swap(__base::__map_.__end_, __buf.__end_); 2412 _VSTD::swap(__base::__map_.__end_cap(), __buf.__end_cap()); 2413 __base::__start_ += __ds; 2414 } 2415} 2416 2417// Create back capacity for one block of elements. 2418// Strong guarantee. Either do it or don't touch anything. 2419template <class _Tp, class _Allocator> 2420void 2421deque<_Tp, _Allocator>::__add_back_capacity() 2422{ 2423 allocator_type& __a = __base::__alloc(); 2424 if (__front_spare() >= __base::__block_size) 2425 { 2426 __base::__start_ -= __base::__block_size; 2427 pointer __pt = __base::__map_.front(); 2428 __base::__map_.pop_front(); 2429 __base::__map_.push_back(__pt); 2430 } 2431 // Else if __nb <= __map_.capacity() - __map_.size() then we need to allocate __nb buffers 2432 else if (__base::__map_.size() < __base::__map_.capacity()) 2433 { // we can put the new buffer into the map, but don't shift things around 2434 // until it is allocated. If we throw, we don't need to fix 2435 // anything up (any added buffers are undetectible) 2436 if (__base::__map_.__back_spare() != 0) 2437 __base::__map_.push_back(__alloc_traits::allocate(__a, __base::__block_size)); 2438 else 2439 { 2440 __base::__map_.push_front(__alloc_traits::allocate(__a, __base::__block_size)); 2441 // Done allocating, reorder capacity 2442 pointer __pt = __base::__map_.front(); 2443 __base::__map_.pop_front(); 2444 __base::__map_.push_back(__pt); 2445 } 2446 } 2447 // Else need to allocate 1 buffer, *and* we need to reallocate __map_. 2448 else 2449 { 2450 __split_buffer<pointer, typename __base::__pointer_allocator&> 2451 __buf(max<size_type>(2* __base::__map_.capacity(), 1), 2452 __base::__map_.size(), 2453 __base::__map_.__alloc()); 2454 2455 typedef __allocator_destructor<_Allocator> _Dp; 2456 unique_ptr<pointer, _Dp> __hold( 2457 __alloc_traits::allocate(__a, __base::__block_size), 2458 _Dp(__a, __base::__block_size)); 2459 __buf.push_back(__hold.get()); 2460 __hold.release(); 2461 2462 for (typename __base::__map_pointer __i = __base::__map_.end(); 2463 __i != __base::__map_.begin();) 2464 __buf.push_front(*--__i); 2465 _VSTD::swap(__base::__map_.__first_, __buf.__first_); 2466 _VSTD::swap(__base::__map_.__begin_, __buf.__begin_); 2467 _VSTD::swap(__base::__map_.__end_, __buf.__end_); 2468 _VSTD::swap(__base::__map_.__end_cap(), __buf.__end_cap()); 2469 } 2470} 2471 2472// Create back capacity for __n elements. 2473// Strong guarantee. Either do it or don't touch anything. 2474template <class _Tp, class _Allocator> 2475void 2476deque<_Tp, _Allocator>::__add_back_capacity(size_type __n) 2477{ 2478 allocator_type& __a = __base::__alloc(); 2479 size_type __nb = __recommend_blocks(__n + __base::__map_.empty()); 2480 // Number of unused blocks at front: 2481 size_type __front_capacity = __front_spare() / __base::__block_size; 2482 __front_capacity = _VSTD::min(__front_capacity, __nb); // don't take more than you need 2483 __nb -= __front_capacity; // number of blocks need to allocate 2484 // If __nb == 0, then we have sufficient capacity. 2485 if (__nb == 0) 2486 { 2487 __base::__start_ -= __base::__block_size * __front_capacity; 2488 for (; __front_capacity > 0; --__front_capacity) 2489 { 2490 pointer __pt = __base::__map_.front(); 2491 __base::__map_.pop_front(); 2492 __base::__map_.push_back(__pt); 2493 } 2494 } 2495 // Else if __nb <= __map_.capacity() - __map_.size() then we need to allocate __nb buffers 2496 else if (__nb <= __base::__map_.capacity() - __base::__map_.size()) 2497 { // we can put the new buffers into the map, but don't shift things around 2498 // until all buffers are allocated. If we throw, we don't need to fix 2499 // anything up (any added buffers are undetectible) 2500 for (; __nb > 0; --__nb) 2501 { 2502 if (__base::__map_.__back_spare() == 0) 2503 break; 2504 __base::__map_.push_back(__alloc_traits::allocate(__a, __base::__block_size)); 2505 } 2506 for (; __nb > 0; --__nb, ++__front_capacity, __base::__start_ += 2507 __base::__block_size - (__base::__map_.size() == 1)) 2508 __base::__map_.push_front(__alloc_traits::allocate(__a, __base::__block_size)); 2509 // Done allocating, reorder capacity 2510 __base::__start_ -= __base::__block_size * __front_capacity; 2511 for (; __front_capacity > 0; --__front_capacity) 2512 { 2513 pointer __pt = __base::__map_.front(); 2514 __base::__map_.pop_front(); 2515 __base::__map_.push_back(__pt); 2516 } 2517 } 2518 // Else need to allocate __nb buffers, *and* we need to reallocate __map_. 2519 else 2520 { 2521 size_type __ds = __front_capacity * __base::__block_size; 2522 __split_buffer<pointer, typename __base::__pointer_allocator&> 2523 __buf(max<size_type>(2* __base::__map_.capacity(), 2524 __nb + __base::__map_.size()), 2525 __base::__map_.size() - __front_capacity, 2526 __base::__map_.__alloc()); 2527#ifndef _LIBCPP_NO_EXCEPTIONS 2528 try 2529 { 2530#endif // _LIBCPP_NO_EXCEPTIONS 2531 for (; __nb > 0; --__nb) 2532 __buf.push_back(__alloc_traits::allocate(__a, __base::__block_size)); 2533#ifndef _LIBCPP_NO_EXCEPTIONS 2534 } 2535 catch (...) 2536 { 2537 for (typename __base::__map_pointer __i = __buf.begin(); 2538 __i != __buf.end(); ++__i) 2539 __alloc_traits::deallocate(__a, *__i, __base::__block_size); 2540 throw; 2541 } 2542#endif // _LIBCPP_NO_EXCEPTIONS 2543 for (; __front_capacity > 0; --__front_capacity) 2544 { 2545 __buf.push_back(__base::__map_.front()); 2546 __base::__map_.pop_front(); 2547 } 2548 for (typename __base::__map_pointer __i = __base::__map_.end(); 2549 __i != __base::__map_.begin();) 2550 __buf.push_front(*--__i); 2551 _VSTD::swap(__base::__map_.__first_, __buf.__first_); 2552 _VSTD::swap(__base::__map_.__begin_, __buf.__begin_); 2553 _VSTD::swap(__base::__map_.__end_, __buf.__end_); 2554 _VSTD::swap(__base::__map_.__end_cap(), __buf.__end_cap()); 2555 __base::__start_ -= __ds; 2556 } 2557} 2558 2559template <class _Tp, class _Allocator> 2560void 2561deque<_Tp, _Allocator>::pop_front() 2562{ 2563 allocator_type& __a = __base::__alloc(); 2564 __alloc_traits::destroy(__a, __to_raw_pointer(*(__base::__map_.begin() + 2565 __base::__start_ / __base::__block_size) + 2566 __base::__start_ % __base::__block_size)); 2567 --__base::size(); 2568 if (++__base::__start_ >= 2 * __base::__block_size) 2569 { 2570 __alloc_traits::deallocate(__a, __base::__map_.front(), __base::__block_size); 2571 __base::__map_.pop_front(); 2572 __base::__start_ -= __base::__block_size; 2573 } 2574} 2575 2576template <class _Tp, class _Allocator> 2577void 2578deque<_Tp, _Allocator>::pop_back() 2579{ 2580 allocator_type& __a = __base::__alloc(); 2581 size_type __p = __base::size() + __base::__start_ - 1; 2582 __alloc_traits::destroy(__a, __to_raw_pointer(*(__base::__map_.begin() + 2583 __p / __base::__block_size) + 2584 __p % __base::__block_size)); 2585 --__base::size(); 2586 if (__back_spare() >= 2 * __base::__block_size) 2587 { 2588 __alloc_traits::deallocate(__a, __base::__map_.back(), __base::__block_size); 2589 __base::__map_.pop_back(); 2590 } 2591} 2592 2593// move assign [__f, __l) to [__r, __r + (__l-__f)). 2594// If __vt points into [__f, __l), then subtract (__f - __r) from __vt. 2595template <class _Tp, class _Allocator> 2596typename deque<_Tp, _Allocator>::iterator 2597deque<_Tp, _Allocator>::__move_and_check(iterator __f, iterator __l, iterator __r, 2598 const_pointer& __vt) 2599{ 2600 // as if 2601 // for (; __f != __l; ++__f, ++__r) 2602 // *__r = _VSTD::move(*__f); 2603 difference_type __n = __l - __f; 2604 while (__n > 0) 2605 { 2606 pointer __fb = __f.__ptr_; 2607 pointer __fe = *__f.__m_iter_ + __base::__block_size; 2608 difference_type __bs = __fe - __fb; 2609 if (__bs > __n) 2610 { 2611 __bs = __n; 2612 __fe = __fb + __bs; 2613 } 2614 if (__fb <= __vt && __vt < __fe) 2615 __vt = (const_iterator(static_cast<__map_const_pointer>(__f.__m_iter_), __vt) -= __f - __r).__ptr_; 2616 __r = _VSTD::move(__fb, __fe, __r); 2617 __n -= __bs; 2618 __f += __bs; 2619 } 2620 return __r; 2621} 2622 2623// move assign [__f, __l) to [__r - (__l-__f), __r) backwards. 2624// If __vt points into [__f, __l), then add (__r - __l) to __vt. 2625template <class _Tp, class _Allocator> 2626typename deque<_Tp, _Allocator>::iterator 2627deque<_Tp, _Allocator>::__move_backward_and_check(iterator __f, iterator __l, iterator __r, 2628 const_pointer& __vt) 2629{ 2630 // as if 2631 // while (__f != __l) 2632 // *--__r = _VSTD::move(*--__l); 2633 difference_type __n = __l - __f; 2634 while (__n > 0) 2635 { 2636 --__l; 2637 pointer __lb = *__l.__m_iter_; 2638 pointer __le = __l.__ptr_ + 1; 2639 difference_type __bs = __le - __lb; 2640 if (__bs > __n) 2641 { 2642 __bs = __n; 2643 __lb = __le - __bs; 2644 } 2645 if (__lb <= __vt && __vt < __le) 2646 __vt = (const_iterator(static_cast<__map_const_pointer>(__l.__m_iter_), __vt) += __r - __l - 1).__ptr_; 2647 __r = _VSTD::move_backward(__lb, __le, __r); 2648 __n -= __bs; 2649 __l -= __bs - 1; 2650 } 2651 return __r; 2652} 2653 2654// move construct [__f, __l) to [__r, __r + (__l-__f)). 2655// If __vt points into [__f, __l), then add (__r - __f) to __vt. 2656template <class _Tp, class _Allocator> 2657void 2658deque<_Tp, _Allocator>::__move_construct_and_check(iterator __f, iterator __l, 2659 iterator __r, const_pointer& __vt) 2660{ 2661 allocator_type& __a = __base::__alloc(); 2662 // as if 2663 // for (; __f != __l; ++__r, ++__f, ++__base::size()) 2664 // __alloc_traits::construct(__a, _VSTD::addressof(*__r), _VSTD::move(*__f)); 2665 difference_type __n = __l - __f; 2666 while (__n > 0) 2667 { 2668 pointer __fb = __f.__ptr_; 2669 pointer __fe = *__f.__m_iter_ + __base::__block_size; 2670 difference_type __bs = __fe - __fb; 2671 if (__bs > __n) 2672 { 2673 __bs = __n; 2674 __fe = __fb + __bs; 2675 } 2676 if (__fb <= __vt && __vt < __fe) 2677 __vt = (const_iterator(static_cast<__map_const_pointer>(__f.__m_iter_), __vt) += __r - __f).__ptr_; 2678 for (; __fb != __fe; ++__fb, ++__r, ++__base::size()) 2679 __alloc_traits::construct(__a, _VSTD::addressof(*__r), _VSTD::move(*__fb)); 2680 __n -= __bs; 2681 __f += __bs; 2682 } 2683} 2684 2685// move construct [__f, __l) to [__r - (__l-__f), __r) backwards. 2686// If __vt points into [__f, __l), then subtract (__l - __r) from __vt. 2687template <class _Tp, class _Allocator> 2688void 2689deque<_Tp, _Allocator>::__move_construct_backward_and_check(iterator __f, iterator __l, 2690 iterator __r, const_pointer& __vt) 2691{ 2692 allocator_type& __a = __base::__alloc(); 2693 // as if 2694 // for (iterator __j = __l; __j != __f;) 2695 // { 2696 // __alloc_traitsconstruct(__a, _VSTD::addressof(*--__r), _VSTD::move(*--__j)); 2697 // --__base::__start_; 2698 // ++__base::size(); 2699 // } 2700 difference_type __n = __l - __f; 2701 while (__n > 0) 2702 { 2703 --__l; 2704 pointer __lb = *__l.__m_iter_; 2705 pointer __le = __l.__ptr_ + 1; 2706 difference_type __bs = __le - __lb; 2707 if (__bs > __n) 2708 { 2709 __bs = __n; 2710 __lb = __le - __bs; 2711 } 2712 if (__lb <= __vt && __vt < __le) 2713 __vt = (const_iterator(static_cast<__map_const_pointer>(__l.__m_iter_), __vt) -= __l - __r + 1).__ptr_; 2714 while (__le != __lb) 2715 { 2716 __alloc_traits::construct(__a, _VSTD::addressof(*--__r), _VSTD::move(*--__le)); 2717 --__base::__start_; 2718 ++__base::size(); 2719 } 2720 __n -= __bs; 2721 __l -= __bs - 1; 2722 } 2723} 2724 2725template <class _Tp, class _Allocator> 2726typename deque<_Tp, _Allocator>::iterator 2727deque<_Tp, _Allocator>::erase(const_iterator __f) 2728{ 2729 iterator __b = __base::begin(); 2730 difference_type __pos = __f - __b; 2731 iterator __p = __b + __pos; 2732 allocator_type& __a = __base::__alloc(); 2733 if (static_cast<size_t>(__pos) <= (__base::size() - 1) / 2) 2734 { // erase from front 2735 _VSTD::move_backward(__b, __p, _VSTD::next(__p)); 2736 __alloc_traits::destroy(__a, _VSTD::addressof(*__b)); 2737 --__base::size(); 2738 ++__base::__start_; 2739 if (__front_spare() >= 2 * __base::__block_size) 2740 { 2741 __alloc_traits::deallocate(__a, __base::__map_.front(), __base::__block_size); 2742 __base::__map_.pop_front(); 2743 __base::__start_ -= __base::__block_size; 2744 } 2745 } 2746 else 2747 { // erase from back 2748 iterator __i = _VSTD::move(_VSTD::next(__p), __base::end(), __p); 2749 __alloc_traits::destroy(__a, _VSTD::addressof(*__i)); 2750 --__base::size(); 2751 if (__back_spare() >= 2 * __base::__block_size) 2752 { 2753 __alloc_traits::deallocate(__a, __base::__map_.back(), __base::__block_size); 2754 __base::__map_.pop_back(); 2755 } 2756 } 2757 return __base::begin() + __pos; 2758} 2759 2760template <class _Tp, class _Allocator> 2761typename deque<_Tp, _Allocator>::iterator 2762deque<_Tp, _Allocator>::erase(const_iterator __f, const_iterator __l) 2763{ 2764 difference_type __n = __l - __f; 2765 iterator __b = __base::begin(); 2766 difference_type __pos = __f - __b; 2767 iterator __p = __b + __pos; 2768 if (__n > 0) 2769 { 2770 allocator_type& __a = __base::__alloc(); 2771 if (static_cast<size_t>(__pos) <= (__base::size() - __n) / 2) 2772 { // erase from front 2773 iterator __i = _VSTD::move_backward(__b, __p, __p + __n); 2774 for (; __b != __i; ++__b) 2775 __alloc_traits::destroy(__a, _VSTD::addressof(*__b)); 2776 __base::size() -= __n; 2777 __base::__start_ += __n; 2778 while (__front_spare() >= 2 * __base::__block_size) 2779 { 2780 __alloc_traits::deallocate(__a, __base::__map_.front(), __base::__block_size); 2781 __base::__map_.pop_front(); 2782 __base::__start_ -= __base::__block_size; 2783 } 2784 } 2785 else 2786 { // erase from back 2787 iterator __i = _VSTD::move(__p + __n, __base::end(), __p); 2788 for (iterator __e = __base::end(); __i != __e; ++__i) 2789 __alloc_traits::destroy(__a, _VSTD::addressof(*__i)); 2790 __base::size() -= __n; 2791 while (__back_spare() >= 2 * __base::__block_size) 2792 { 2793 __alloc_traits::deallocate(__a, __base::__map_.back(), __base::__block_size); 2794 __base::__map_.pop_back(); 2795 } 2796 } 2797 } 2798 return __base::begin() + __pos; 2799} 2800 2801template <class _Tp, class _Allocator> 2802void 2803deque<_Tp, _Allocator>::__erase_to_end(const_iterator __f) 2804{ 2805 iterator __e = __base::end(); 2806 difference_type __n = __e - __f; 2807 if (__n > 0) 2808 { 2809 allocator_type& __a = __base::__alloc(); 2810 iterator __b = __base::begin(); 2811 difference_type __pos = __f - __b; 2812 for (iterator __p = __b + __pos; __p != __e; ++__p) 2813 __alloc_traits::destroy(__a, _VSTD::addressof(*__p)); 2814 __base::size() -= __n; 2815 while (__back_spare() >= 2 * __base::__block_size) 2816 { 2817 __alloc_traits::deallocate(__a, __base::__map_.back(), __base::__block_size); 2818 __base::__map_.pop_back(); 2819 } 2820 } 2821} 2822 2823template <class _Tp, class _Allocator> 2824inline 2825void 2826deque<_Tp, _Allocator>::swap(deque& __c) 2827#if _LIBCPP_STD_VER >= 14 2828 _NOEXCEPT 2829#else 2830 _NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || 2831 __is_nothrow_swappable<allocator_type>::value) 2832#endif 2833{ 2834 __base::swap(__c); 2835} 2836 2837template <class _Tp, class _Allocator> 2838inline 2839void 2840deque<_Tp, _Allocator>::clear() _NOEXCEPT 2841{ 2842 __base::clear(); 2843} 2844 2845template <class _Tp, class _Allocator> 2846inline _LIBCPP_INLINE_VISIBILITY 2847bool 2848operator==(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) 2849{ 2850 const typename deque<_Tp, _Allocator>::size_type __sz = __x.size(); 2851 return __sz == __y.size() && _VSTD::equal(__x.begin(), __x.end(), __y.begin()); 2852} 2853 2854template <class _Tp, class _Allocator> 2855inline _LIBCPP_INLINE_VISIBILITY 2856bool 2857operator!=(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) 2858{ 2859 return !(__x == __y); 2860} 2861 2862template <class _Tp, class _Allocator> 2863inline _LIBCPP_INLINE_VISIBILITY 2864bool 2865operator< (const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) 2866{ 2867 return _VSTD::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end()); 2868} 2869 2870template <class _Tp, class _Allocator> 2871inline _LIBCPP_INLINE_VISIBILITY 2872bool 2873operator> (const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) 2874{ 2875 return __y < __x; 2876} 2877 2878template <class _Tp, class _Allocator> 2879inline _LIBCPP_INLINE_VISIBILITY 2880bool 2881operator>=(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) 2882{ 2883 return !(__x < __y); 2884} 2885 2886template <class _Tp, class _Allocator> 2887inline _LIBCPP_INLINE_VISIBILITY 2888bool 2889operator<=(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) 2890{ 2891 return !(__y < __x); 2892} 2893 2894template <class _Tp, class _Allocator> 2895inline _LIBCPP_INLINE_VISIBILITY 2896void 2897swap(deque<_Tp, _Allocator>& __x, deque<_Tp, _Allocator>& __y) 2898 _NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) 2899{ 2900 __x.swap(__y); 2901} 2902 2903_LIBCPP_END_NAMESPACE_STD 2904 2905_LIBCPP_POP_MACROS 2906 2907#endif // _LIBCPP_DEQUE 2908