1 // -*- C++ -*- 2 //===-------------------------- iterator ----------------------------------===// 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_ITERATOR 12 #define _LIBCPP_ITERATOR 13 14 /* 15 iterator synopsis 16 17 namespace std 18 { 19 20 template<class Iterator> 21 struct iterator_traits 22 { 23 typedef typename Iterator::difference_type difference_type; 24 typedef typename Iterator::value_type value_type; 25 typedef typename Iterator::pointer pointer; 26 typedef typename Iterator::reference reference; 27 typedef typename Iterator::iterator_category iterator_category; 28 }; 29 30 template<class T> 31 struct iterator_traits<T*> 32 { 33 typedef ptrdiff_t difference_type; 34 typedef T value_type; 35 typedef T* pointer; 36 typedef T& reference; 37 typedef random_access_iterator_tag iterator_category; 38 }; 39 40 template<class T> 41 struct iterator_traits<const T*> 42 { 43 typedef ptrdiff_t difference_type; 44 typedef T value_type; 45 typedef const T* pointer; 46 typedef const T& reference; 47 typedef random_access_iterator_tag iterator_category; 48 }; 49 50 template<class Category, class T, class Distance = ptrdiff_t, 51 class Pointer = T*, class Reference = T&> 52 struct iterator 53 { 54 typedef T value_type; 55 typedef Distance difference_type; 56 typedef Pointer pointer; 57 typedef Reference reference; 58 typedef Category iterator_category; 59 }; 60 61 struct input_iterator_tag {}; 62 struct output_iterator_tag {}; 63 struct forward_iterator_tag : public input_iterator_tag {}; 64 struct bidirectional_iterator_tag : public forward_iterator_tag {}; 65 struct random_access_iterator_tag : public bidirectional_iterator_tag {}; 66 67 // 27.4.3, iterator operations 68 // extension: second argument not conforming to C++03 69 template <class InputIterator> // constexpr in C++17 70 constexpr void advance(InputIterator& i, 71 typename iterator_traits<InputIterator>::difference_type n); 72 73 template <class InputIterator> // constexpr in C++17 74 constexpr typename iterator_traits<InputIterator>::difference_type 75 distance(InputIterator first, InputIterator last); 76 77 template <class InputIterator> // constexpr in C++17 78 constexpr InputIterator next(InputIterator x, 79 typename iterator_traits<InputIterator>::difference_type n = 1); 80 81 template <class BidirectionalIterator> // constexpr in C++17 82 constexpr BidirectionalIterator prev(BidirectionalIterator x, 83 typename iterator_traits<BidirectionalIterator>::difference_type n = 1); 84 85 template <class Iterator> 86 class reverse_iterator 87 : public iterator<typename iterator_traits<Iterator>::iterator_category, 88 typename iterator_traits<Iterator>::value_type, 89 typename iterator_traits<Iterator>::difference_type, 90 typename iterator_traits<Iterator>::pointer, 91 typename iterator_traits<Iterator>::reference> 92 { 93 protected: 94 Iterator current; 95 public: 96 typedef Iterator iterator_type; 97 typedef typename iterator_traits<Iterator>::difference_type difference_type; 98 typedef typename iterator_traits<Iterator>::reference reference; 99 typedef typename iterator_traits<Iterator>::pointer pointer; 100 101 constexpr reverse_iterator(); 102 constexpr explicit reverse_iterator(Iterator x); 103 template <class U> constexpr reverse_iterator(const reverse_iterator<U>& u); 104 template <class U> constexpr reverse_iterator& operator=(const reverse_iterator<U>& u); 105 constexpr Iterator base() const; 106 constexpr reference operator*() const; 107 constexpr pointer operator->() const; 108 constexpr reverse_iterator& operator++(); 109 constexpr reverse_iterator operator++(int); 110 constexpr reverse_iterator& operator--(); 111 constexpr reverse_iterator operator--(int); 112 constexpr reverse_iterator operator+ (difference_type n) const; 113 constexpr reverse_iterator& operator+=(difference_type n); 114 constexpr reverse_iterator operator- (difference_type n) const; 115 constexpr reverse_iterator& operator-=(difference_type n); 116 constexpr reference operator[](difference_type n) const; 117 }; 118 119 template <class Iterator1, class Iterator2> 120 constexpr bool // constexpr in C++17 121 operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 122 123 template <class Iterator1, class Iterator2> 124 constexpr bool // constexpr in C++17 125 operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 126 127 template <class Iterator1, class Iterator2> 128 constexpr bool // constexpr in C++17 129 operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 130 131 template <class Iterator1, class Iterator2> 132 constexpr bool // constexpr in C++17 133 operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 134 135 template <class Iterator1, class Iterator2> 136 constexpr bool // constexpr in C++17 137 operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 138 139 template <class Iterator1, class Iterator2> 140 constexpr bool // constexpr in C++17 141 operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 142 143 template <class Iterator1, class Iterator2> 144 constexpr auto 145 operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y) 146 -> decltype(__y.base() - __x.base()); // constexpr in C++17 147 148 template <class Iterator> 149 constexpr reverse_iterator<Iterator> 150 operator+(typename reverse_iterator<Iterator>::difference_type n, 151 const reverse_iterator<Iterator>& x); // constexpr in C++17 152 153 template <class Iterator> 154 constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14, constexpr in C++17 155 156 template <class Container> 157 class back_insert_iterator 158 { 159 protected: 160 Container* container; 161 public: 162 typedef Container container_type; 163 typedef void value_type; 164 typedef void difference_type; 165 typedef void reference; 166 typedef void pointer; 167 168 explicit back_insert_iterator(Container& x); 169 back_insert_iterator& operator=(const typename Container::value_type& value); 170 back_insert_iterator& operator*(); 171 back_insert_iterator& operator++(); 172 back_insert_iterator operator++(int); 173 }; 174 175 template <class Container> back_insert_iterator<Container> back_inserter(Container& x); 176 177 template <class Container> 178 class front_insert_iterator 179 { 180 protected: 181 Container* container; 182 public: 183 typedef Container container_type; 184 typedef void value_type; 185 typedef void difference_type; 186 typedef void reference; 187 typedef void pointer; 188 189 explicit front_insert_iterator(Container& x); 190 front_insert_iterator& operator=(const typename Container::value_type& value); 191 front_insert_iterator& operator*(); 192 front_insert_iterator& operator++(); 193 front_insert_iterator operator++(int); 194 }; 195 196 template <class Container> front_insert_iterator<Container> front_inserter(Container& x); 197 198 template <class Container> 199 class insert_iterator 200 { 201 protected: 202 Container* container; 203 typename Container::iterator iter; 204 public: 205 typedef Container container_type; 206 typedef void value_type; 207 typedef void difference_type; 208 typedef void reference; 209 typedef void pointer; 210 211 insert_iterator(Container& x, typename Container::iterator i); 212 insert_iterator& operator=(const typename Container::value_type& value); 213 insert_iterator& operator*(); 214 insert_iterator& operator++(); 215 insert_iterator& operator++(int); 216 }; 217 218 template <class Container, class Iterator> 219 insert_iterator<Container> inserter(Container& x, Iterator i); 220 221 template <class Iterator> 222 class move_iterator { 223 public: 224 typedef Iterator iterator_type; 225 typedef typename iterator_traits<Iterator>::difference_type difference_type; 226 typedef Iterator pointer; 227 typedef typename iterator_traits<Iterator>::value_type value_type; 228 typedef typename iterator_traits<Iterator>::iterator_category iterator_category; 229 typedef value_type&& reference; 230 231 constexpr move_iterator(); // all the constexprs are in C++17 232 constexpr explicit move_iterator(Iterator i); 233 template <class U> 234 constexpr move_iterator(const move_iterator<U>& u); 235 template <class U> 236 constexpr move_iterator& operator=(const move_iterator<U>& u); 237 constexpr iterator_type base() const; 238 constexpr reference operator*() const; 239 constexpr pointer operator->() const; 240 constexpr move_iterator& operator++(); 241 constexpr move_iterator operator++(int); 242 constexpr move_iterator& operator--(); 243 constexpr move_iterator operator--(int); 244 constexpr move_iterator operator+(difference_type n) const; 245 constexpr move_iterator& operator+=(difference_type n); 246 constexpr move_iterator operator-(difference_type n) const; 247 constexpr move_iterator& operator-=(difference_type n); 248 constexpr unspecified operator[](difference_type n) const; 249 private: 250 Iterator current; // exposition only 251 }; 252 253 template <class Iterator1, class Iterator2> 254 constexpr bool // constexpr in C++17 255 operator==(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 256 257 template <class Iterator1, class Iterator2> 258 constexpr bool // constexpr in C++17 259 operator!=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 260 261 template <class Iterator1, class Iterator2> 262 constexpr bool // constexpr in C++17 263 operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 264 265 template <class Iterator1, class Iterator2> 266 constexpr bool // constexpr in C++17 267 operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 268 269 template <class Iterator1, class Iterator2> 270 constexpr bool // constexpr in C++17 271 operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 272 273 template <class Iterator1, class Iterator2> 274 constexpr bool // constexpr in C++17 275 operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 276 277 template <class Iterator1, class Iterator2> 278 constexpr auto // constexpr in C++17 279 operator-(const move_iterator<Iterator1>& x, 280 const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base()); 281 282 template <class Iterator> 283 constexpr move_iterator<Iterator> operator+( // constexpr in C++17 284 typename move_iterator<Iterator>::difference_type n, 285 const move_iterator<Iterator>& x); 286 287 template <class Iterator> // constexpr in C++17 288 constexpr move_iterator<Iterator> make_move_iterator(const Iterator& i); 289 290 291 template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t> 292 class istream_iterator 293 : public iterator<input_iterator_tag, T, Distance, const T*, const T&> 294 { 295 public: 296 typedef charT char_type; 297 typedef traits traits_type; 298 typedef basic_istream<charT,traits> istream_type; 299 300 constexpr istream_iterator(); 301 istream_iterator(istream_type& s); 302 istream_iterator(const istream_iterator& x); 303 ~istream_iterator(); 304 305 const T& operator*() const; 306 const T* operator->() const; 307 istream_iterator& operator++(); 308 istream_iterator operator++(int); 309 }; 310 311 template <class T, class charT, class traits, class Distance> 312 bool operator==(const istream_iterator<T,charT,traits,Distance>& x, 313 const istream_iterator<T,charT,traits,Distance>& y); 314 template <class T, class charT, class traits, class Distance> 315 bool operator!=(const istream_iterator<T,charT,traits,Distance>& x, 316 const istream_iterator<T,charT,traits,Distance>& y); 317 318 template <class T, class charT = char, class traits = char_traits<charT> > 319 class ostream_iterator 320 : public iterator<output_iterator_tag, void, void, void ,void> 321 { 322 public: 323 typedef charT char_type; 324 typedef traits traits_type; 325 typedef basic_ostream<charT,traits> ostream_type; 326 327 ostream_iterator(ostream_type& s); 328 ostream_iterator(ostream_type& s, const charT* delimiter); 329 ostream_iterator(const ostream_iterator& x); 330 ~ostream_iterator(); 331 ostream_iterator& operator=(const T& value); 332 333 ostream_iterator& operator*(); 334 ostream_iterator& operator++(); 335 ostream_iterator& operator++(int); 336 }; 337 338 template<class charT, class traits = char_traits<charT> > 339 class istreambuf_iterator 340 : public iterator<input_iterator_tag, charT, 341 typename traits::off_type, unspecified, 342 charT> 343 { 344 public: 345 typedef charT char_type; 346 typedef traits traits_type; 347 typedef typename traits::int_type int_type; 348 typedef basic_streambuf<charT,traits> streambuf_type; 349 typedef basic_istream<charT,traits> istream_type; 350 351 istreambuf_iterator() noexcept; 352 istreambuf_iterator(istream_type& s) noexcept; 353 istreambuf_iterator(streambuf_type* s) noexcept; 354 istreambuf_iterator(a-private-type) noexcept; 355 356 charT operator*() const; 357 pointer operator->() const; 358 istreambuf_iterator& operator++(); 359 a-private-type operator++(int); 360 361 bool equal(const istreambuf_iterator& b) const; 362 }; 363 364 template <class charT, class traits> 365 bool operator==(const istreambuf_iterator<charT,traits>& a, 366 const istreambuf_iterator<charT,traits>& b); 367 template <class charT, class traits> 368 bool operator!=(const istreambuf_iterator<charT,traits>& a, 369 const istreambuf_iterator<charT,traits>& b); 370 371 template <class charT, class traits = char_traits<charT> > 372 class ostreambuf_iterator 373 : public iterator<output_iterator_tag, void, void, void, void> 374 { 375 public: 376 typedef charT char_type; 377 typedef traits traits_type; 378 typedef basic_streambuf<charT,traits> streambuf_type; 379 typedef basic_ostream<charT,traits> ostream_type; 380 381 ostreambuf_iterator(ostream_type& s) noexcept; 382 ostreambuf_iterator(streambuf_type* s) noexcept; 383 ostreambuf_iterator& operator=(charT c); 384 ostreambuf_iterator& operator*(); 385 ostreambuf_iterator& operator++(); 386 ostreambuf_iterator& operator++(int); 387 bool failed() const noexcept; 388 }; 389 390 template <class C> constexpr auto begin(C& c) -> decltype(c.begin()); 391 template <class C> constexpr auto begin(const C& c) -> decltype(c.begin()); 392 template <class C> constexpr auto end(C& c) -> decltype(c.end()); 393 template <class C> constexpr auto end(const C& c) -> decltype(c.end()); 394 template <class T, size_t N> constexpr T* begin(T (&array)[N]); 395 template <class T, size_t N> constexpr T* end(T (&array)[N]); 396 397 template <class C> auto constexpr cbegin(const C& c) -> decltype(std::begin(c)); // C++14 398 template <class C> auto constexpr cend(const C& c) -> decltype(std::end(c)); // C++14 399 template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin()); // C++14 400 template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin()); // C++14 401 template <class C> auto constexpr rend(C& c) -> decltype(c.rend()); // C++14 402 template <class C> constexpr auto rend(const C& c) -> decltype(c.rend()); // C++14 403 template <class E> reverse_iterator<const E*> constexpr rbegin(initializer_list<E> il); // C++14 404 template <class E> reverse_iterator<const E*> constexpr rend(initializer_list<E> il); // C++14 405 template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]); // C++14 406 template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]); // C++14 407 template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c)); // C++14 408 template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c)); // C++14 409 410 // 24.8, container access: 411 template <class C> constexpr auto size(const C& c) -> decltype(c.size()); // C++17 412 template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17 413 template <class C> constexpr auto empty(const C& c) -> decltype(c.empty()); // C++17 414 template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept; // C++17 415 template <class E> constexpr bool empty(initializer_list<E> il) noexcept; // C++17 416 template <class C> constexpr auto data(C& c) -> decltype(c.data()); // C++17 417 template <class C> constexpr auto data(const C& c) -> decltype(c.data()); // C++17 418 template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept; // C++17 419 template <class E> constexpr const E* data(initializer_list<E> il) noexcept; // C++17 420 421 } // std 422 423 */ 424 425 #include <__config> 426 #include <iosfwd> // for forward declarations of vector and string. 427 #include <__functional_base> 428 #include <type_traits> 429 #include <cstddef> 430 #include <initializer_list> 431 #ifdef __APPLE__ 432 #include <Availability.h> 433 #endif 434 435 #include <__debug> 436 437 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 438 #pragma GCC system_header 439 #endif 440 441 _LIBCPP_BEGIN_NAMESPACE_STD 442 443 struct _LIBCPP_TEMPLATE_VIS input_iterator_tag {}; 444 struct _LIBCPP_TEMPLATE_VIS output_iterator_tag {}; 445 struct _LIBCPP_TEMPLATE_VIS forward_iterator_tag : public input_iterator_tag {}; 446 struct _LIBCPP_TEMPLATE_VIS bidirectional_iterator_tag : public forward_iterator_tag {}; 447 struct _LIBCPP_TEMPLATE_VIS random_access_iterator_tag : public bidirectional_iterator_tag {}; 448 449 template <class _Tp> 450 struct __has_iterator_category 451 { 452 private: 453 struct __two {char __lx; char __lxx;}; 454 template <class _Up> static __two __test(...); 455 template <class _Up> static char __test(typename _Up::iterator_category* = 0); 456 public: 457 static const bool value = sizeof(__test<_Tp>(0)) == 1; 458 }; 459 460 template <class _Iter, bool> struct __iterator_traits_impl {}; 461 462 template <class _Iter> 463 struct __iterator_traits_impl<_Iter, true> 464 { 465 typedef typename _Iter::difference_type difference_type; 466 typedef typename _Iter::value_type value_type; 467 typedef typename _Iter::pointer pointer; 468 typedef typename _Iter::reference reference; 469 typedef typename _Iter::iterator_category iterator_category; 470 }; 471 472 template <class _Iter, bool> struct __iterator_traits {}; 473 474 template <class _Iter> 475 struct __iterator_traits<_Iter, true> 476 : __iterator_traits_impl 477 < 478 _Iter, 479 is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value || 480 is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value 481 > 482 {}; 483 484 // iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category 485 // exists. Else iterator_traits<Iterator> will be an empty class. This is a 486 // conforming extension which allows some programs to compile and behave as 487 // the client expects instead of failing at compile time. 488 489 template <class _Iter> 490 struct _LIBCPP_TEMPLATE_VIS iterator_traits 491 : __iterator_traits<_Iter, __has_iterator_category<_Iter>::value> {}; 492 493 template<class _Tp> 494 struct _LIBCPP_TEMPLATE_VIS iterator_traits<_Tp*> 495 { 496 typedef ptrdiff_t difference_type; 497 typedef typename remove_const<_Tp>::type value_type; 498 typedef _Tp* pointer; 499 typedef _Tp& reference; 500 typedef random_access_iterator_tag iterator_category; 501 }; 502 503 template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value> 504 struct __has_iterator_category_convertible_to 505 : public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value> 506 {}; 507 508 template <class _Tp, class _Up> 509 struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {}; 510 511 template <class _Tp> 512 struct __is_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {}; 513 514 template <class _Tp> 515 struct __is_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {}; 516 517 template <class _Tp> 518 struct __is_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {}; 519 520 template <class _Tp> 521 struct __is_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {}; 522 523 template <class _Tp> 524 struct __is_exactly_input_iterator 525 : public integral_constant<bool, 526 __has_iterator_category_convertible_to<_Tp, input_iterator_tag>::value && 527 !__has_iterator_category_convertible_to<_Tp, forward_iterator_tag>::value> {}; 528 529 template<class _Category, class _Tp, class _Distance = ptrdiff_t, 530 class _Pointer = _Tp*, class _Reference = _Tp&> 531 struct _LIBCPP_TEMPLATE_VIS iterator 532 { 533 typedef _Tp value_type; 534 typedef _Distance difference_type; 535 typedef _Pointer pointer; 536 typedef _Reference reference; 537 typedef _Category iterator_category; 538 }; 539 540 template <class _InputIter> 541 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 542 void __advance(_InputIter& __i, 543 typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag) 544 { 545 for (; __n > 0; --__n) 546 ++__i; 547 } 548 549 template <class _BiDirIter> 550 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 551 void __advance(_BiDirIter& __i, 552 typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag) 553 { 554 if (__n >= 0) 555 for (; __n > 0; --__n) 556 ++__i; 557 else 558 for (; __n < 0; ++__n) 559 --__i; 560 } 561 562 template <class _RandIter> 563 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 564 void __advance(_RandIter& __i, 565 typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag) 566 { 567 __i += __n; 568 } 569 570 template <class _InputIter> 571 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 572 void advance(_InputIter& __i, 573 typename iterator_traits<_InputIter>::difference_type __n) 574 { 575 __advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category()); 576 } 577 578 template <class _InputIter> 579 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 580 typename iterator_traits<_InputIter>::difference_type 581 __distance(_InputIter __first, _InputIter __last, input_iterator_tag) 582 { 583 typename iterator_traits<_InputIter>::difference_type __r(0); 584 for (; __first != __last; ++__first) 585 ++__r; 586 return __r; 587 } 588 589 template <class _RandIter> 590 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 591 typename iterator_traits<_RandIter>::difference_type 592 __distance(_RandIter __first, _RandIter __last, random_access_iterator_tag) 593 { 594 return __last - __first; 595 } 596 597 template <class _InputIter> 598 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 599 typename iterator_traits<_InputIter>::difference_type 600 distance(_InputIter __first, _InputIter __last) 601 { 602 return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category()); 603 } 604 605 template <class _InputIter> 606 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 607 typename enable_if 608 < 609 __is_input_iterator<_InputIter>::value, 610 _InputIter 611 >::type 612 next(_InputIter __x, 613 typename iterator_traits<_InputIter>::difference_type __n = 1) 614 { 615 _VSTD::advance(__x, __n); 616 return __x; 617 } 618 619 template <class _BidirectionalIter> 620 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 621 typename enable_if 622 < 623 __is_bidirectional_iterator<_BidirectionalIter>::value, 624 _BidirectionalIter 625 >::type 626 prev(_BidirectionalIter __x, 627 typename iterator_traits<_BidirectionalIter>::difference_type __n = 1) 628 { 629 _VSTD::advance(__x, -__n); 630 return __x; 631 } 632 633 634 template <class _Tp, class = void> 635 struct __is_stashing_iterator : false_type {}; 636 637 template <class _Tp> 638 struct __is_stashing_iterator<_Tp, typename __void_t<typename _Tp::__stashing_iterator_tag>::type> 639 : true_type {}; 640 641 template <class _Iter> 642 class _LIBCPP_TEMPLATE_VIS reverse_iterator 643 : public iterator<typename iterator_traits<_Iter>::iterator_category, 644 typename iterator_traits<_Iter>::value_type, 645 typename iterator_traits<_Iter>::difference_type, 646 typename iterator_traits<_Iter>::pointer, 647 typename iterator_traits<_Iter>::reference> 648 { 649 private: 650 /*mutable*/ _Iter __t; // no longer used as of LWG #2360, not removed due to ABI break 651 652 static_assert(!__is_stashing_iterator<_Iter>::value, 653 "The specified iterator type cannot be used with reverse_iterator; " 654 "Using stashing iterators with reverse_iterator causes undefined behavior"); 655 656 protected: 657 _Iter current; 658 public: 659 typedef _Iter iterator_type; 660 typedef typename iterator_traits<_Iter>::difference_type difference_type; 661 typedef typename iterator_traits<_Iter>::reference reference; 662 typedef typename iterator_traits<_Iter>::pointer pointer; 663 664 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 665 reverse_iterator() : __t(), current() {} 666 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 667 explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {} 668 template <class _Up> 669 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 670 reverse_iterator(const reverse_iterator<_Up>& __u) : __t(__u.base()), current(__u.base()) {} 671 template <class _Up> 672 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 673 reverse_iterator& operator=(const reverse_iterator<_Up>& __u) 674 { __t = current = __u.base(); return *this; } 675 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 676 _Iter base() const {return current;} 677 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 678 reference operator*() const {_Iter __tmp = current; return *--__tmp;} 679 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 680 pointer operator->() const {return _VSTD::addressof(operator*());} 681 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 682 reverse_iterator& operator++() {--current; return *this;} 683 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 684 reverse_iterator operator++(int) {reverse_iterator __tmp(*this); --current; return __tmp;} 685 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 686 reverse_iterator& operator--() {++current; return *this;} 687 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 688 reverse_iterator operator--(int) {reverse_iterator __tmp(*this); ++current; return __tmp;} 689 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 690 reverse_iterator operator+ (difference_type __n) const {return reverse_iterator(current - __n);} 691 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 692 reverse_iterator& operator+=(difference_type __n) {current -= __n; return *this;} 693 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 694 reverse_iterator operator- (difference_type __n) const {return reverse_iterator(current + __n);} 695 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 696 reverse_iterator& operator-=(difference_type __n) {current += __n; return *this;} 697 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 698 reference operator[](difference_type __n) const {return *(*this + __n);} 699 }; 700 701 template <class _Iter1, class _Iter2> 702 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 703 bool 704 operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 705 { 706 return __x.base() == __y.base(); 707 } 708 709 template <class _Iter1, class _Iter2> 710 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 711 bool 712 operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 713 { 714 return __x.base() > __y.base(); 715 } 716 717 template <class _Iter1, class _Iter2> 718 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 719 bool 720 operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 721 { 722 return __x.base() != __y.base(); 723 } 724 725 template <class _Iter1, class _Iter2> 726 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 727 bool 728 operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 729 { 730 return __x.base() < __y.base(); 731 } 732 733 template <class _Iter1, class _Iter2> 734 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 735 bool 736 operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 737 { 738 return __x.base() <= __y.base(); 739 } 740 741 template <class _Iter1, class _Iter2> 742 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 743 bool 744 operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 745 { 746 return __x.base() >= __y.base(); 747 } 748 749 #ifndef _LIBCPP_CXX03_LANG 750 template <class _Iter1, class _Iter2> 751 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 752 auto 753 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 754 -> decltype(__y.base() - __x.base()) 755 { 756 return __y.base() - __x.base(); 757 } 758 #else 759 template <class _Iter1, class _Iter2> 760 inline _LIBCPP_INLINE_VISIBILITY 761 typename reverse_iterator<_Iter1>::difference_type 762 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 763 { 764 return __y.base() - __x.base(); 765 } 766 #endif 767 768 template <class _Iter> 769 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 770 reverse_iterator<_Iter> 771 operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x) 772 { 773 return reverse_iterator<_Iter>(__x.base() - __n); 774 } 775 776 #if _LIBCPP_STD_VER > 11 777 template <class _Iter> 778 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 779 reverse_iterator<_Iter> make_reverse_iterator(_Iter __i) 780 { 781 return reverse_iterator<_Iter>(__i); 782 } 783 #endif 784 785 template <class _Container> 786 class _LIBCPP_TEMPLATE_VIS back_insert_iterator 787 : public iterator<output_iterator_tag, 788 void, 789 void, 790 void, 791 void> 792 { 793 protected: 794 _Container* container; 795 public: 796 typedef _Container container_type; 797 798 _LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} 799 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_) 800 {container->push_back(__value_); return *this;} 801 #ifndef _LIBCPP_CXX03_LANG 802 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_) 803 {container->push_back(_VSTD::move(__value_)); return *this;} 804 #endif // _LIBCPP_CXX03_LANG 805 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;} 806 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;} 807 _LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;} 808 }; 809 810 template <class _Container> 811 inline _LIBCPP_INLINE_VISIBILITY 812 back_insert_iterator<_Container> 813 back_inserter(_Container& __x) 814 { 815 return back_insert_iterator<_Container>(__x); 816 } 817 818 template <class _Container> 819 class _LIBCPP_TEMPLATE_VIS front_insert_iterator 820 : public iterator<output_iterator_tag, 821 void, 822 void, 823 void, 824 void> 825 { 826 protected: 827 _Container* container; 828 public: 829 typedef _Container container_type; 830 831 _LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} 832 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_) 833 {container->push_front(__value_); return *this;} 834 #ifndef _LIBCPP_CXX03_LANG 835 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_) 836 {container->push_front(_VSTD::move(__value_)); return *this;} 837 #endif // _LIBCPP_CXX03_LANG 838 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;} 839 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;} 840 _LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;} 841 }; 842 843 template <class _Container> 844 inline _LIBCPP_INLINE_VISIBILITY 845 front_insert_iterator<_Container> 846 front_inserter(_Container& __x) 847 { 848 return front_insert_iterator<_Container>(__x); 849 } 850 851 template <class _Container> 852 class _LIBCPP_TEMPLATE_VIS insert_iterator 853 : public iterator<output_iterator_tag, 854 void, 855 void, 856 void, 857 void> 858 { 859 protected: 860 _Container* container; 861 typename _Container::iterator iter; 862 public: 863 typedef _Container container_type; 864 865 _LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i) 866 : container(_VSTD::addressof(__x)), iter(__i) {} 867 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_) 868 {iter = container->insert(iter, __value_); ++iter; return *this;} 869 #ifndef _LIBCPP_CXX03_LANG 870 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_) 871 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;} 872 #endif // _LIBCPP_CXX03_LANG 873 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;} 874 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;} 875 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;} 876 }; 877 878 template <class _Container> 879 inline _LIBCPP_INLINE_VISIBILITY 880 insert_iterator<_Container> 881 inserter(_Container& __x, typename _Container::iterator __i) 882 { 883 return insert_iterator<_Container>(__x, __i); 884 } 885 886 template <class _Tp, class _CharT = char, 887 class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t> 888 class _LIBCPP_TEMPLATE_VIS istream_iterator 889 : public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&> 890 { 891 public: 892 typedef _CharT char_type; 893 typedef _Traits traits_type; 894 typedef basic_istream<_CharT,_Traits> istream_type; 895 private: 896 istream_type* __in_stream_; 897 _Tp __value_; 898 public: 899 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(0), __value_() {} 900 _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(_VSTD::addressof(__s)) 901 { 902 if (!(*__in_stream_ >> __value_)) 903 __in_stream_ = 0; 904 } 905 906 _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;} 907 _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return _VSTD::addressof((operator*()));} 908 _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++() 909 { 910 if (!(*__in_stream_ >> __value_)) 911 __in_stream_ = 0; 912 return *this; 913 } 914 _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int) 915 {istream_iterator __t(*this); ++(*this); return __t;} 916 917 friend _LIBCPP_INLINE_VISIBILITY 918 bool operator==(const istream_iterator& __x, const istream_iterator& __y) 919 {return __x.__in_stream_ == __y.__in_stream_;} 920 921 friend _LIBCPP_INLINE_VISIBILITY 922 bool operator!=(const istream_iterator& __x, const istream_iterator& __y) 923 {return !(__x == __y);} 924 }; 925 926 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> > 927 class _LIBCPP_TEMPLATE_VIS ostream_iterator 928 : public iterator<output_iterator_tag, void, void, void, void> 929 { 930 public: 931 typedef _CharT char_type; 932 typedef _Traits traits_type; 933 typedef basic_ostream<_CharT,_Traits> ostream_type; 934 private: 935 ostream_type* __out_stream_; 936 const char_type* __delim_; 937 public: 938 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT 939 : __out_stream_(_VSTD::addressof(__s)), __delim_(0) {} 940 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT 941 : __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {} 942 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_) 943 { 944 *__out_stream_ << __value_; 945 if (__delim_) 946 *__out_stream_ << __delim_; 947 return *this; 948 } 949 950 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;} 951 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;} 952 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;} 953 }; 954 955 template<class _CharT, class _Traits> 956 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator 957 : public iterator<input_iterator_tag, _CharT, 958 typename _Traits::off_type, _CharT*, 959 _CharT> 960 { 961 public: 962 typedef _CharT char_type; 963 typedef _Traits traits_type; 964 typedef typename _Traits::int_type int_type; 965 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 966 typedef basic_istream<_CharT,_Traits> istream_type; 967 private: 968 mutable streambuf_type* __sbuf_; 969 970 class __proxy 971 { 972 char_type __keep_; 973 streambuf_type* __sbuf_; 974 _LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s) 975 : __keep_(__c), __sbuf_(__s) {} 976 friend class istreambuf_iterator; 977 public: 978 _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;} 979 }; 980 981 _LIBCPP_INLINE_VISIBILITY 982 bool __test_for_eof() const 983 { 984 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof())) 985 __sbuf_ = 0; 986 return __sbuf_ == 0; 987 } 988 public: 989 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(0) {} 990 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT 991 : __sbuf_(__s.rdbuf()) {} 992 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT 993 : __sbuf_(__s) {} 994 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT 995 : __sbuf_(__p.__sbuf_) {} 996 997 _LIBCPP_INLINE_VISIBILITY char_type operator*() const 998 {return static_cast<char_type>(__sbuf_->sgetc());} 999 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++() 1000 { 1001 __sbuf_->sbumpc(); 1002 return *this; 1003 } 1004 _LIBCPP_INLINE_VISIBILITY __proxy operator++(int) 1005 { 1006 return __proxy(__sbuf_->sbumpc(), __sbuf_); 1007 } 1008 1009 _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const 1010 {return __test_for_eof() == __b.__test_for_eof();} 1011 }; 1012 1013 template <class _CharT, class _Traits> 1014 inline _LIBCPP_INLINE_VISIBILITY 1015 bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a, 1016 const istreambuf_iterator<_CharT,_Traits>& __b) 1017 {return __a.equal(__b);} 1018 1019 template <class _CharT, class _Traits> 1020 inline _LIBCPP_INLINE_VISIBILITY 1021 bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a, 1022 const istreambuf_iterator<_CharT,_Traits>& __b) 1023 {return !__a.equal(__b);} 1024 1025 template <class _CharT, class _Traits> 1026 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator 1027 : public iterator<output_iterator_tag, void, void, void, void> 1028 { 1029 public: 1030 typedef _CharT char_type; 1031 typedef _Traits traits_type; 1032 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 1033 typedef basic_ostream<_CharT,_Traits> ostream_type; 1034 private: 1035 streambuf_type* __sbuf_; 1036 public: 1037 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT 1038 : __sbuf_(__s.rdbuf()) {} 1039 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT 1040 : __sbuf_(__s) {} 1041 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c) 1042 { 1043 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) 1044 __sbuf_ = 0; 1045 return *this; 1046 } 1047 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;} 1048 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;} 1049 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;} 1050 _LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == 0;} 1051 1052 #if !defined(__APPLE__) || \ 1053 (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_8) || \ 1054 (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0) 1055 1056 template <class _Ch, class _Tr> 1057 friend 1058 _LIBCPP_HIDDEN 1059 ostreambuf_iterator<_Ch, _Tr> 1060 __pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s, 1061 const _Ch* __ob, const _Ch* __op, const _Ch* __oe, 1062 ios_base& __iob, _Ch __fl); 1063 #endif 1064 }; 1065 1066 template <class _Iter> 1067 class _LIBCPP_TEMPLATE_VIS move_iterator 1068 { 1069 private: 1070 _Iter __i; 1071 public: 1072 typedef _Iter iterator_type; 1073 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1074 typedef typename iterator_traits<iterator_type>::value_type value_type; 1075 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1076 typedef iterator_type pointer; 1077 #ifndef _LIBCPP_CXX03_LANG 1078 typedef typename iterator_traits<iterator_type>::reference __reference; 1079 typedef typename conditional< 1080 is_reference<__reference>::value, 1081 typename remove_reference<__reference>::type&&, 1082 __reference 1083 >::type reference; 1084 #else 1085 typedef typename iterator_traits<iterator_type>::reference reference; 1086 #endif 1087 1088 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1089 move_iterator() : __i() {} 1090 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1091 explicit move_iterator(_Iter __x) : __i(__x) {} 1092 template <class _Up> 1093 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1094 move_iterator(const move_iterator<_Up>& __u) : __i(__u.base()) {} 1095 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 _Iter base() const {return __i;} 1096 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1097 reference operator*() const { return static_cast<reference>(*__i); } 1098 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1099 pointer operator->() const { return __i;} 1100 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1101 move_iterator& operator++() {++__i; return *this;} 1102 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1103 move_iterator operator++(int) {move_iterator __tmp(*this); ++__i; return __tmp;} 1104 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1105 move_iterator& operator--() {--__i; return *this;} 1106 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1107 move_iterator operator--(int) {move_iterator __tmp(*this); --__i; return __tmp;} 1108 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1109 move_iterator operator+ (difference_type __n) const {return move_iterator(__i + __n);} 1110 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1111 move_iterator& operator+=(difference_type __n) {__i += __n; return *this;} 1112 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1113 move_iterator operator- (difference_type __n) const {return move_iterator(__i - __n);} 1114 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1115 move_iterator& operator-=(difference_type __n) {__i -= __n; return *this;} 1116 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1117 reference operator[](difference_type __n) const { return static_cast<reference>(__i[__n]); } 1118 }; 1119 1120 template <class _Iter1, class _Iter2> 1121 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1122 bool 1123 operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1124 { 1125 return __x.base() == __y.base(); 1126 } 1127 1128 template <class _Iter1, class _Iter2> 1129 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1130 bool 1131 operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1132 { 1133 return __x.base() < __y.base(); 1134 } 1135 1136 template <class _Iter1, class _Iter2> 1137 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1138 bool 1139 operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1140 { 1141 return __x.base() != __y.base(); 1142 } 1143 1144 template <class _Iter1, class _Iter2> 1145 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1146 bool 1147 operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1148 { 1149 return __x.base() > __y.base(); 1150 } 1151 1152 template <class _Iter1, class _Iter2> 1153 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1154 bool 1155 operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1156 { 1157 return __x.base() >= __y.base(); 1158 } 1159 1160 template <class _Iter1, class _Iter2> 1161 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1162 bool 1163 operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1164 { 1165 return __x.base() <= __y.base(); 1166 } 1167 1168 #ifndef _LIBCPP_CXX03_LANG 1169 template <class _Iter1, class _Iter2> 1170 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1171 auto 1172 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1173 -> decltype(__x.base() - __y.base()) 1174 { 1175 return __x.base() - __y.base(); 1176 } 1177 #else 1178 template <class _Iter1, class _Iter2> 1179 inline _LIBCPP_INLINE_VISIBILITY 1180 typename move_iterator<_Iter1>::difference_type 1181 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1182 { 1183 return __x.base() - __y.base(); 1184 } 1185 #endif 1186 1187 template <class _Iter> 1188 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1189 move_iterator<_Iter> 1190 operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x) 1191 { 1192 return move_iterator<_Iter>(__x.base() + __n); 1193 } 1194 1195 template <class _Iter> 1196 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1197 move_iterator<_Iter> 1198 make_move_iterator(_Iter __i) 1199 { 1200 return move_iterator<_Iter>(__i); 1201 } 1202 1203 // __wrap_iter 1204 1205 template <class _Iter> class __wrap_iter; 1206 1207 template <class _Iter1, class _Iter2> 1208 _LIBCPP_INLINE_VISIBILITY 1209 bool 1210 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1211 1212 template <class _Iter1, class _Iter2> 1213 _LIBCPP_INLINE_VISIBILITY 1214 bool 1215 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1216 1217 template <class _Iter1, class _Iter2> 1218 _LIBCPP_INLINE_VISIBILITY 1219 bool 1220 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1221 1222 template <class _Iter1, class _Iter2> 1223 _LIBCPP_INLINE_VISIBILITY 1224 bool 1225 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1226 1227 template <class _Iter1, class _Iter2> 1228 _LIBCPP_INLINE_VISIBILITY 1229 bool 1230 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1231 1232 template <class _Iter1, class _Iter2> 1233 _LIBCPP_INLINE_VISIBILITY 1234 bool 1235 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1236 1237 #ifndef _LIBCPP_CXX03_LANG 1238 template <class _Iter1, class _Iter2> 1239 _LIBCPP_INLINE_VISIBILITY 1240 auto 1241 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1242 -> decltype(__x.base() - __y.base()); 1243 #else 1244 template <class _Iter1, class _Iter2> 1245 _LIBCPP_INLINE_VISIBILITY 1246 typename __wrap_iter<_Iter1>::difference_type 1247 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1248 #endif 1249 1250 template <class _Iter> 1251 _LIBCPP_INLINE_VISIBILITY 1252 __wrap_iter<_Iter> 1253 operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT_DEBUG; 1254 1255 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY copy(_Ip, _Ip, _Op); 1256 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY copy_backward(_B1, _B1, _B2); 1257 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY move(_Ip, _Ip, _Op); 1258 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY move_backward(_B1, _B1, _B2); 1259 1260 #if _LIBCPP_DEBUG_LEVEL < 2 1261 1262 template <class _Tp> 1263 _LIBCPP_INLINE_VISIBILITY 1264 typename enable_if 1265 < 1266 is_trivially_copy_assignable<_Tp>::value, 1267 _Tp* 1268 >::type 1269 __unwrap_iter(__wrap_iter<_Tp*>); 1270 1271 #else 1272 1273 template <class _Tp> 1274 inline _LIBCPP_INLINE_VISIBILITY 1275 typename enable_if 1276 < 1277 is_trivially_copy_assignable<_Tp>::value, 1278 __wrap_iter<_Tp*> 1279 >::type 1280 __unwrap_iter(__wrap_iter<_Tp*> __i); 1281 1282 #endif 1283 1284 template <class _Iter> 1285 class __wrap_iter 1286 { 1287 public: 1288 typedef _Iter iterator_type; 1289 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1290 typedef typename iterator_traits<iterator_type>::value_type value_type; 1291 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1292 typedef typename iterator_traits<iterator_type>::pointer pointer; 1293 typedef typename iterator_traits<iterator_type>::reference reference; 1294 private: 1295 iterator_type __i; 1296 public: 1297 _LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT_DEBUG 1298 #if _LIBCPP_STD_VER > 11 1299 : __i{} 1300 #endif 1301 { 1302 #if _LIBCPP_DEBUG_LEVEL >= 2 1303 __get_db()->__insert_i(this); 1304 #endif 1305 } 1306 template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u, 1307 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT_DEBUG 1308 : __i(__u.base()) 1309 { 1310 #if _LIBCPP_DEBUG_LEVEL >= 2 1311 __get_db()->__iterator_copy(this, &__u); 1312 #endif 1313 } 1314 #if _LIBCPP_DEBUG_LEVEL >= 2 1315 _LIBCPP_INLINE_VISIBILITY 1316 __wrap_iter(const __wrap_iter& __x) 1317 : __i(__x.base()) 1318 { 1319 __get_db()->__iterator_copy(this, &__x); 1320 } 1321 _LIBCPP_INLINE_VISIBILITY 1322 __wrap_iter& operator=(const __wrap_iter& __x) 1323 { 1324 if (this != &__x) 1325 { 1326 __get_db()->__iterator_copy(this, &__x); 1327 __i = __x.__i; 1328 } 1329 return *this; 1330 } 1331 _LIBCPP_INLINE_VISIBILITY 1332 ~__wrap_iter() 1333 { 1334 __get_db()->__erase_i(this); 1335 } 1336 #endif 1337 _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT_DEBUG 1338 { 1339 #if _LIBCPP_DEBUG_LEVEL >= 2 1340 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1341 "Attempted to dereference a non-dereferenceable iterator"); 1342 #endif 1343 return *__i; 1344 } 1345 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT_DEBUG 1346 { 1347 #if _LIBCPP_DEBUG_LEVEL >= 2 1348 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1349 "Attempted to dereference a non-dereferenceable iterator"); 1350 #endif 1351 return (pointer)_VSTD::addressof(*__i); 1352 } 1353 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT_DEBUG 1354 { 1355 #if _LIBCPP_DEBUG_LEVEL >= 2 1356 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1357 "Attempted to increment non-incrementable iterator"); 1358 #endif 1359 ++__i; 1360 return *this; 1361 } 1362 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT_DEBUG 1363 {__wrap_iter __tmp(*this); ++(*this); return __tmp;} 1364 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT_DEBUG 1365 { 1366 #if _LIBCPP_DEBUG_LEVEL >= 2 1367 _LIBCPP_ASSERT(__get_const_db()->__decrementable(this), 1368 "Attempted to decrement non-decrementable iterator"); 1369 #endif 1370 --__i; 1371 return *this; 1372 } 1373 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT_DEBUG 1374 {__wrap_iter __tmp(*this); --(*this); return __tmp;} 1375 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT_DEBUG 1376 {__wrap_iter __w(*this); __w += __n; return __w;} 1377 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT_DEBUG 1378 { 1379 #if _LIBCPP_DEBUG_LEVEL >= 2 1380 _LIBCPP_ASSERT(__get_const_db()->__addable(this, __n), 1381 "Attempted to add/subtract iterator outside of valid range"); 1382 #endif 1383 __i += __n; 1384 return *this; 1385 } 1386 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT_DEBUG 1387 {return *this + (-__n);} 1388 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT_DEBUG 1389 {*this += -__n; return *this;} 1390 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT_DEBUG 1391 { 1392 #if _LIBCPP_DEBUG_LEVEL >= 2 1393 _LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n), 1394 "Attempted to subscript iterator outside of valid range"); 1395 #endif 1396 return __i[__n]; 1397 } 1398 1399 _LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT_DEBUG {return __i;} 1400 1401 private: 1402 #if _LIBCPP_DEBUG_LEVEL >= 2 1403 _LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x) 1404 { 1405 __get_db()->__insert_ic(this, __p); 1406 } 1407 #else 1408 _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT_DEBUG : __i(__x) {} 1409 #endif 1410 1411 template <class _Up> friend class __wrap_iter; 1412 template <class _CharT, class _Traits, class _Alloc> friend class basic_string; 1413 template <class _Tp, class _Alloc> friend class _LIBCPP_TEMPLATE_VIS vector; 1414 1415 template <class _Iter1, class _Iter2> 1416 friend 1417 bool 1418 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1419 1420 template <class _Iter1, class _Iter2> 1421 friend 1422 bool 1423 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1424 1425 template <class _Iter1, class _Iter2> 1426 friend 1427 bool 1428 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1429 1430 template <class _Iter1, class _Iter2> 1431 friend 1432 bool 1433 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1434 1435 template <class _Iter1, class _Iter2> 1436 friend 1437 bool 1438 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1439 1440 template <class _Iter1, class _Iter2> 1441 friend 1442 bool 1443 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1444 1445 #ifndef _LIBCPP_CXX03_LANG 1446 template <class _Iter1, class _Iter2> 1447 friend 1448 auto 1449 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1450 -> decltype(__x.base() - __y.base()); 1451 #else 1452 template <class _Iter1, class _Iter2> 1453 friend 1454 typename __wrap_iter<_Iter1>::difference_type 1455 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1456 #endif 1457 1458 template <class _Iter1> 1459 friend 1460 __wrap_iter<_Iter1> 1461 operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT_DEBUG; 1462 1463 template <class _Ip, class _Op> friend _Op copy(_Ip, _Ip, _Op); 1464 template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2); 1465 template <class _Ip, class _Op> friend _Op move(_Ip, _Ip, _Op); 1466 template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2); 1467 1468 #if _LIBCPP_DEBUG_LEVEL < 2 1469 template <class _Tp> 1470 friend 1471 typename enable_if 1472 < 1473 is_trivially_copy_assignable<_Tp>::value, 1474 _Tp* 1475 >::type 1476 __unwrap_iter(__wrap_iter<_Tp*>); 1477 #else 1478 template <class _Tp> 1479 inline _LIBCPP_INLINE_VISIBILITY 1480 typename enable_if 1481 < 1482 is_trivially_copy_assignable<_Tp>::value, 1483 __wrap_iter<_Tp*> 1484 >::type 1485 __unwrap_iter(__wrap_iter<_Tp*> __i); 1486 #endif 1487 }; 1488 1489 template <class _Iter1, class _Iter2> 1490 inline _LIBCPP_INLINE_VISIBILITY 1491 bool 1492 operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1493 { 1494 return __x.base() == __y.base(); 1495 } 1496 1497 template <class _Iter1, class _Iter2> 1498 inline _LIBCPP_INLINE_VISIBILITY 1499 bool 1500 operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1501 { 1502 #if _LIBCPP_DEBUG_LEVEL >= 2 1503 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1504 "Attempted to compare incomparable iterators"); 1505 #endif 1506 return __x.base() < __y.base(); 1507 } 1508 1509 template <class _Iter1, class _Iter2> 1510 inline _LIBCPP_INLINE_VISIBILITY 1511 bool 1512 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1513 { 1514 return !(__x == __y); 1515 } 1516 1517 template <class _Iter1, class _Iter2> 1518 inline _LIBCPP_INLINE_VISIBILITY 1519 bool 1520 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1521 { 1522 return __y < __x; 1523 } 1524 1525 template <class _Iter1, class _Iter2> 1526 inline _LIBCPP_INLINE_VISIBILITY 1527 bool 1528 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1529 { 1530 return !(__x < __y); 1531 } 1532 1533 template <class _Iter1, class _Iter2> 1534 inline _LIBCPP_INLINE_VISIBILITY 1535 bool 1536 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1537 { 1538 return !(__y < __x); 1539 } 1540 1541 template <class _Iter1> 1542 inline _LIBCPP_INLINE_VISIBILITY 1543 bool 1544 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1545 { 1546 return !(__x == __y); 1547 } 1548 1549 template <class _Iter1> 1550 inline _LIBCPP_INLINE_VISIBILITY 1551 bool 1552 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1553 { 1554 return __y < __x; 1555 } 1556 1557 template <class _Iter1> 1558 inline _LIBCPP_INLINE_VISIBILITY 1559 bool 1560 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1561 { 1562 return !(__x < __y); 1563 } 1564 1565 template <class _Iter1> 1566 inline _LIBCPP_INLINE_VISIBILITY 1567 bool 1568 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1569 { 1570 return !(__y < __x); 1571 } 1572 1573 #ifndef _LIBCPP_CXX03_LANG 1574 template <class _Iter1, class _Iter2> 1575 inline _LIBCPP_INLINE_VISIBILITY 1576 auto 1577 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1578 -> decltype(__x.base() - __y.base()) 1579 { 1580 #if _LIBCPP_DEBUG_LEVEL >= 2 1581 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1582 "Attempted to subtract incompatible iterators"); 1583 #endif 1584 return __x.base() - __y.base(); 1585 } 1586 #else 1587 template <class _Iter1, class _Iter2> 1588 inline _LIBCPP_INLINE_VISIBILITY 1589 typename __wrap_iter<_Iter1>::difference_type 1590 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1591 { 1592 #if _LIBCPP_DEBUG_LEVEL >= 2 1593 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1594 "Attempted to subtract incompatible iterators"); 1595 #endif 1596 return __x.base() - __y.base(); 1597 } 1598 #endif 1599 1600 template <class _Iter> 1601 inline _LIBCPP_INLINE_VISIBILITY 1602 __wrap_iter<_Iter> 1603 operator+(typename __wrap_iter<_Iter>::difference_type __n, 1604 __wrap_iter<_Iter> __x) _NOEXCEPT_DEBUG 1605 { 1606 __x += __n; 1607 return __x; 1608 } 1609 1610 template <class _Iter> 1611 struct __libcpp_is_trivial_iterator 1612 : public _LIBCPP_BOOL_CONSTANT(is_pointer<_Iter>::value) {}; 1613 1614 template <class _Iter> 1615 struct __libcpp_is_trivial_iterator<move_iterator<_Iter> > 1616 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1617 1618 template <class _Iter> 1619 struct __libcpp_is_trivial_iterator<reverse_iterator<_Iter> > 1620 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1621 1622 template <class _Iter> 1623 struct __libcpp_is_trivial_iterator<__wrap_iter<_Iter> > 1624 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1625 1626 1627 template <class _Tp, size_t _Np> 1628 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1629 _Tp* 1630 begin(_Tp (&__array)[_Np]) 1631 { 1632 return __array; 1633 } 1634 1635 template <class _Tp, size_t _Np> 1636 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1637 _Tp* 1638 end(_Tp (&__array)[_Np]) 1639 { 1640 return __array + _Np; 1641 } 1642 1643 #if !defined(_LIBCPP_CXX03_LANG) 1644 1645 template <class _Cp> 1646 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1647 auto 1648 begin(_Cp& __c) -> decltype(__c.begin()) 1649 { 1650 return __c.begin(); 1651 } 1652 1653 template <class _Cp> 1654 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1655 auto 1656 begin(const _Cp& __c) -> decltype(__c.begin()) 1657 { 1658 return __c.begin(); 1659 } 1660 1661 template <class _Cp> 1662 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1663 auto 1664 end(_Cp& __c) -> decltype(__c.end()) 1665 { 1666 return __c.end(); 1667 } 1668 1669 template <class _Cp> 1670 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1671 auto 1672 end(const _Cp& __c) -> decltype(__c.end()) 1673 { 1674 return __c.end(); 1675 } 1676 1677 #if _LIBCPP_STD_VER > 11 1678 1679 template <class _Tp, size_t _Np> 1680 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1681 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np]) 1682 { 1683 return reverse_iterator<_Tp*>(__array + _Np); 1684 } 1685 1686 template <class _Tp, size_t _Np> 1687 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1688 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np]) 1689 { 1690 return reverse_iterator<_Tp*>(__array); 1691 } 1692 1693 template <class _Ep> 1694 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1695 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il) 1696 { 1697 return reverse_iterator<const _Ep*>(__il.end()); 1698 } 1699 1700 template <class _Ep> 1701 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1702 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il) 1703 { 1704 return reverse_iterator<const _Ep*>(__il.begin()); 1705 } 1706 1707 template <class _Cp> 1708 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1709 auto cbegin(const _Cp& __c) -> decltype(_VSTD::begin(__c)) 1710 { 1711 return _VSTD::begin(__c); 1712 } 1713 1714 template <class _Cp> 1715 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1716 auto cend(const _Cp& __c) -> decltype(_VSTD::end(__c)) 1717 { 1718 return _VSTD::end(__c); 1719 } 1720 1721 template <class _Cp> 1722 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1723 auto rbegin(_Cp& __c) -> decltype(__c.rbegin()) 1724 { 1725 return __c.rbegin(); 1726 } 1727 1728 template <class _Cp> 1729 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1730 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin()) 1731 { 1732 return __c.rbegin(); 1733 } 1734 1735 template <class _Cp> 1736 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1737 auto rend(_Cp& __c) -> decltype(__c.rend()) 1738 { 1739 return __c.rend(); 1740 } 1741 1742 template <class _Cp> 1743 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1744 auto rend(const _Cp& __c) -> decltype(__c.rend()) 1745 { 1746 return __c.rend(); 1747 } 1748 1749 template <class _Cp> 1750 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1751 auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c)) 1752 { 1753 return _VSTD::rbegin(__c); 1754 } 1755 1756 template <class _Cp> 1757 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1758 auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c)) 1759 { 1760 return _VSTD::rend(__c); 1761 } 1762 1763 #endif 1764 1765 1766 #else // defined(_LIBCPP_CXX03_LANG) 1767 1768 template <class _Cp> 1769 inline _LIBCPP_INLINE_VISIBILITY 1770 typename _Cp::iterator 1771 begin(_Cp& __c) 1772 { 1773 return __c.begin(); 1774 } 1775 1776 template <class _Cp> 1777 inline _LIBCPP_INLINE_VISIBILITY 1778 typename _Cp::const_iterator 1779 begin(const _Cp& __c) 1780 { 1781 return __c.begin(); 1782 } 1783 1784 template <class _Cp> 1785 inline _LIBCPP_INLINE_VISIBILITY 1786 typename _Cp::iterator 1787 end(_Cp& __c) 1788 { 1789 return __c.end(); 1790 } 1791 1792 template <class _Cp> 1793 inline _LIBCPP_INLINE_VISIBILITY 1794 typename _Cp::const_iterator 1795 end(const _Cp& __c) 1796 { 1797 return __c.end(); 1798 } 1799 1800 #endif // !defined(_LIBCPP_CXX03_LANG) 1801 1802 #if _LIBCPP_STD_VER > 14 1803 template <class _Cont> 1804 constexpr auto size(const _Cont& __c) -> decltype(__c.size()) { return __c.size(); } 1805 1806 template <class _Tp, size_t _Sz> 1807 constexpr size_t size(const _Tp (&)[_Sz]) noexcept { return _Sz; } 1808 1809 template <class _Cont> 1810 constexpr auto empty(const _Cont& __c) -> decltype(__c.empty()) { return __c.empty(); } 1811 1812 template <class _Tp, size_t _Sz> 1813 constexpr bool empty(const _Tp (&)[_Sz]) noexcept { return false; } 1814 1815 template <class _Ep> 1816 constexpr bool empty(initializer_list<_Ep> __il) noexcept { return __il.size() == 0; } 1817 1818 template <class _Cont> constexpr 1819 auto data(_Cont& __c) -> decltype(__c.data()) { return __c.data(); } 1820 1821 template <class _Cont> constexpr 1822 auto data(const _Cont& __c) -> decltype(__c.data()) { return __c.data(); } 1823 1824 template <class _Tp, size_t _Sz> 1825 constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; } 1826 1827 template <class _Ep> 1828 constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); } 1829 #endif 1830 1831 1832 _LIBCPP_END_NAMESPACE_STD 1833 1834 #endif // _LIBCPP_ITERATOR 1835
