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 Category, class T, class Distance = ptrdiff_t, 41 class Pointer = T*, class Reference = T&> 42 struct iterator 43 { 44 typedef T value_type; 45 typedef Distance difference_type; 46 typedef Pointer pointer; 47 typedef Reference reference; 48 typedef Category iterator_category; 49 }; 50 51 struct input_iterator_tag {}; 52 struct output_iterator_tag {}; 53 struct forward_iterator_tag : public input_iterator_tag {}; 54 struct bidirectional_iterator_tag : public forward_iterator_tag {}; 55 struct random_access_iterator_tag : public bidirectional_iterator_tag {}; 56 57 // 27.4.3, iterator operations 58 // extension: second argument not conforming to C++03 59 template <class InputIterator> // constexpr in C++17 60 constexpr void advance(InputIterator& i, 61 typename iterator_traits<InputIterator>::difference_type n); 62 63 template <class InputIterator> // constexpr in C++17 64 constexpr typename iterator_traits<InputIterator>::difference_type 65 distance(InputIterator first, InputIterator last); 66 67 template <class InputIterator> // constexpr in C++17 68 constexpr InputIterator next(InputIterator x, 69 typename iterator_traits<InputIterator>::difference_type n = 1); 70 71 template <class BidirectionalIterator> // constexpr in C++17 72 constexpr BidirectionalIterator prev(BidirectionalIterator x, 73 typename iterator_traits<BidirectionalIterator>::difference_type n = 1); 74 75 template <class Iterator> 76 class reverse_iterator 77 : public iterator<typename iterator_traits<Iterator>::iterator_category, 78 typename iterator_traits<Iterator>::value_type, 79 typename iterator_traits<Iterator>::difference_type, 80 typename iterator_traits<Iterator>::pointer, 81 typename iterator_traits<Iterator>::reference> 82 { 83 protected: 84 Iterator current; 85 public: 86 typedef Iterator iterator_type; 87 typedef typename iterator_traits<Iterator>::difference_type difference_type; 88 typedef typename iterator_traits<Iterator>::reference reference; 89 typedef typename iterator_traits<Iterator>::pointer pointer; 90 91 constexpr reverse_iterator(); 92 constexpr explicit reverse_iterator(Iterator x); 93 template <class U> constexpr reverse_iterator(const reverse_iterator<U>& u); 94 template <class U> constexpr reverse_iterator& operator=(const reverse_iterator<U>& u); 95 constexpr Iterator base() const; 96 constexpr reference operator*() const; 97 constexpr pointer operator->() const; 98 constexpr reverse_iterator& operator++(); 99 constexpr reverse_iterator operator++(int); 100 constexpr reverse_iterator& operator--(); 101 constexpr reverse_iterator operator--(int); 102 constexpr reverse_iterator operator+ (difference_type n) const; 103 constexpr reverse_iterator& operator+=(difference_type n); 104 constexpr reverse_iterator operator- (difference_type n) const; 105 constexpr reverse_iterator& operator-=(difference_type n); 106 constexpr reference operator[](difference_type n) const; 107 }; 108 109 template <class Iterator1, class Iterator2> 110 constexpr bool // constexpr in C++17 111 operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 112 113 template <class Iterator1, class Iterator2> 114 constexpr bool // constexpr in C++17 115 operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 116 117 template <class Iterator1, class Iterator2> 118 constexpr bool // constexpr in C++17 119 operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 120 121 template <class Iterator1, class Iterator2> 122 constexpr bool // constexpr in C++17 123 operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 124 125 template <class Iterator1, class Iterator2> 126 constexpr bool // constexpr in C++17 127 operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 128 129 template <class Iterator1, class Iterator2> 130 constexpr bool // constexpr in C++17 131 operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); 132 133 template <class Iterator1, class Iterator2> 134 constexpr auto 135 operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y) 136 -> decltype(__y.base() - __x.base()); // constexpr in C++17 137 138 template <class Iterator> 139 constexpr reverse_iterator<Iterator> 140 operator+(typename reverse_iterator<Iterator>::difference_type n, 141 const reverse_iterator<Iterator>& x); // constexpr in C++17 142 143 template <class Iterator> 144 constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14, constexpr in C++17 145 146 template <class Container> 147 class back_insert_iterator 148 { 149 protected: 150 Container* container; 151 public: 152 typedef Container container_type; 153 typedef void value_type; 154 typedef void difference_type; 155 typedef void reference; 156 typedef void pointer; 157 158 explicit back_insert_iterator(Container& x); 159 back_insert_iterator& operator=(const typename Container::value_type& value); 160 back_insert_iterator& operator*(); 161 back_insert_iterator& operator++(); 162 back_insert_iterator operator++(int); 163 }; 164 165 template <class Container> back_insert_iterator<Container> back_inserter(Container& x); 166 167 template <class Container> 168 class front_insert_iterator 169 { 170 protected: 171 Container* container; 172 public: 173 typedef Container container_type; 174 typedef void value_type; 175 typedef void difference_type; 176 typedef void reference; 177 typedef void pointer; 178 179 explicit front_insert_iterator(Container& x); 180 front_insert_iterator& operator=(const typename Container::value_type& value); 181 front_insert_iterator& operator*(); 182 front_insert_iterator& operator++(); 183 front_insert_iterator operator++(int); 184 }; 185 186 template <class Container> front_insert_iterator<Container> front_inserter(Container& x); 187 188 template <class Container> 189 class insert_iterator 190 { 191 protected: 192 Container* container; 193 typename Container::iterator iter; 194 public: 195 typedef Container container_type; 196 typedef void value_type; 197 typedef void difference_type; 198 typedef void reference; 199 typedef void pointer; 200 201 insert_iterator(Container& x, typename Container::iterator i); 202 insert_iterator& operator=(const typename Container::value_type& value); 203 insert_iterator& operator*(); 204 insert_iterator& operator++(); 205 insert_iterator& operator++(int); 206 }; 207 208 template <class Container, class Iterator> 209 insert_iterator<Container> inserter(Container& x, Iterator i); 210 211 template <class Iterator> 212 class move_iterator { 213 public: 214 typedef Iterator iterator_type; 215 typedef typename iterator_traits<Iterator>::difference_type difference_type; 216 typedef Iterator pointer; 217 typedef typename iterator_traits<Iterator>::value_type value_type; 218 typedef typename iterator_traits<Iterator>::iterator_category iterator_category; 219 typedef value_type&& reference; 220 221 constexpr move_iterator(); // all the constexprs are in C++17 222 constexpr explicit move_iterator(Iterator i); 223 template <class U> 224 constexpr move_iterator(const move_iterator<U>& u); 225 template <class U> 226 constexpr move_iterator& operator=(const move_iterator<U>& u); 227 constexpr iterator_type base() const; 228 constexpr reference operator*() const; 229 constexpr pointer operator->() const; 230 constexpr move_iterator& operator++(); 231 constexpr move_iterator operator++(int); 232 constexpr move_iterator& operator--(); 233 constexpr move_iterator operator--(int); 234 constexpr move_iterator operator+(difference_type n) const; 235 constexpr move_iterator& operator+=(difference_type n); 236 constexpr move_iterator operator-(difference_type n) const; 237 constexpr move_iterator& operator-=(difference_type n); 238 constexpr unspecified operator[](difference_type n) const; 239 private: 240 Iterator current; // exposition only 241 }; 242 243 template <class Iterator1, class Iterator2> 244 constexpr bool // constexpr in C++17 245 operator==(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 246 247 template <class Iterator1, class Iterator2> 248 constexpr bool // constexpr in C++17 249 operator!=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 250 251 template <class Iterator1, class Iterator2> 252 constexpr bool // constexpr in C++17 253 operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 254 255 template <class Iterator1, class Iterator2> 256 constexpr bool // constexpr in C++17 257 operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 258 259 template <class Iterator1, class Iterator2> 260 constexpr bool // constexpr in C++17 261 operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 262 263 template <class Iterator1, class Iterator2> 264 constexpr bool // constexpr in C++17 265 operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); 266 267 template <class Iterator1, class Iterator2> 268 constexpr auto // constexpr in C++17 269 operator-(const move_iterator<Iterator1>& x, 270 const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base()); 271 272 template <class Iterator> 273 constexpr move_iterator<Iterator> operator+( // constexpr in C++17 274 typename move_iterator<Iterator>::difference_type n, 275 const move_iterator<Iterator>& x); 276 277 template <class Iterator> // constexpr in C++17 278 constexpr move_iterator<Iterator> make_move_iterator(const Iterator& i); 279 280 281 template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t> 282 class istream_iterator 283 : public iterator<input_iterator_tag, T, Distance, const T*, const T&> 284 { 285 public: 286 typedef charT char_type; 287 typedef traits traits_type; 288 typedef basic_istream<charT,traits> istream_type; 289 290 constexpr istream_iterator(); 291 istream_iterator(istream_type& s); 292 istream_iterator(const istream_iterator& x); 293 ~istream_iterator(); 294 295 const T& operator*() const; 296 const T* operator->() const; 297 istream_iterator& operator++(); 298 istream_iterator operator++(int); 299 }; 300 301 template <class T, class charT, class traits, class Distance> 302 bool operator==(const istream_iterator<T,charT,traits,Distance>& x, 303 const istream_iterator<T,charT,traits,Distance>& y); 304 template <class T, class charT, class traits, class Distance> 305 bool operator!=(const istream_iterator<T,charT,traits,Distance>& x, 306 const istream_iterator<T,charT,traits,Distance>& y); 307 308 template <class T, class charT = char, class traits = char_traits<charT> > 309 class ostream_iterator 310 : public iterator<output_iterator_tag, void, void, void ,void> 311 { 312 public: 313 typedef charT char_type; 314 typedef traits traits_type; 315 typedef basic_ostream<charT,traits> ostream_type; 316 317 ostream_iterator(ostream_type& s); 318 ostream_iterator(ostream_type& s, const charT* delimiter); 319 ostream_iterator(const ostream_iterator& x); 320 ~ostream_iterator(); 321 ostream_iterator& operator=(const T& value); 322 323 ostream_iterator& operator*(); 324 ostream_iterator& operator++(); 325 ostream_iterator& operator++(int); 326 }; 327 328 template<class charT, class traits = char_traits<charT> > 329 class istreambuf_iterator 330 : public iterator<input_iterator_tag, charT, 331 typename traits::off_type, unspecified, 332 charT> 333 { 334 public: 335 typedef charT char_type; 336 typedef traits traits_type; 337 typedef typename traits::int_type int_type; 338 typedef basic_streambuf<charT,traits> streambuf_type; 339 typedef basic_istream<charT,traits> istream_type; 340 341 istreambuf_iterator() noexcept; 342 istreambuf_iterator(istream_type& s) noexcept; 343 istreambuf_iterator(streambuf_type* s) noexcept; 344 istreambuf_iterator(a-private-type) noexcept; 345 346 charT operator*() const; 347 pointer operator->() const; 348 istreambuf_iterator& operator++(); 349 a-private-type operator++(int); 350 351 bool equal(const istreambuf_iterator& b) const; 352 }; 353 354 template <class charT, class traits> 355 bool operator==(const istreambuf_iterator<charT,traits>& a, 356 const istreambuf_iterator<charT,traits>& b); 357 template <class charT, class traits> 358 bool operator!=(const istreambuf_iterator<charT,traits>& a, 359 const istreambuf_iterator<charT,traits>& b); 360 361 template <class charT, class traits = char_traits<charT> > 362 class ostreambuf_iterator 363 : public iterator<output_iterator_tag, void, void, void, void> 364 { 365 public: 366 typedef charT char_type; 367 typedef traits traits_type; 368 typedef basic_streambuf<charT,traits> streambuf_type; 369 typedef basic_ostream<charT,traits> ostream_type; 370 371 ostreambuf_iterator(ostream_type& s) noexcept; 372 ostreambuf_iterator(streambuf_type* s) noexcept; 373 ostreambuf_iterator& operator=(charT c); 374 ostreambuf_iterator& operator*(); 375 ostreambuf_iterator& operator++(); 376 ostreambuf_iterator& operator++(int); 377 bool failed() const noexcept; 378 }; 379 380 template <class C> constexpr auto begin(C& c) -> decltype(c.begin()); 381 template <class C> constexpr auto begin(const C& c) -> decltype(c.begin()); 382 template <class C> constexpr auto end(C& c) -> decltype(c.end()); 383 template <class C> constexpr auto end(const C& c) -> decltype(c.end()); 384 template <class T, size_t N> constexpr T* begin(T (&array)[N]); 385 template <class T, size_t N> constexpr T* end(T (&array)[N]); 386 387 template <class C> auto constexpr cbegin(const C& c) -> decltype(std::begin(c)); // C++14 388 template <class C> auto constexpr cend(const C& c) -> decltype(std::end(c)); // C++14 389 template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin()); // C++14 390 template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin()); // C++14 391 template <class C> auto constexpr rend(C& c) -> decltype(c.rend()); // C++14 392 template <class C> constexpr auto rend(const C& c) -> decltype(c.rend()); // C++14 393 template <class E> reverse_iterator<const E*> constexpr rbegin(initializer_list<E> il); // C++14 394 template <class E> reverse_iterator<const E*> constexpr rend(initializer_list<E> il); // C++14 395 template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]); // C++14 396 template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]); // C++14 397 template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c)); // C++14 398 template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c)); // C++14 399 400 // 24.8, container access: 401 template <class C> constexpr auto size(const C& c) -> decltype(c.size()); // C++17 402 template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17 403 template <class C> constexpr auto empty(const C& c) -> decltype(c.empty()); // C++17 404 template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept; // C++17 405 template <class E> constexpr bool empty(initializer_list<E> il) noexcept; // C++17 406 template <class C> constexpr auto data(C& c) -> decltype(c.data()); // C++17 407 template <class C> constexpr auto data(const C& c) -> decltype(c.data()); // C++17 408 template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept; // C++17 409 template <class E> constexpr const E* data(initializer_list<E> il) noexcept; // C++17 410 411 } // std 412 413 */ 414 415 #include <__config> 416 #include <iosfwd> // for forward declarations of vector and string. 417 #include <__functional_base> 418 #include <type_traits> 419 #include <cstddef> 420 #include <initializer_list> 421 #ifdef __APPLE__ 422 #include <Availability.h> 423 #endif 424 425 #include <__debug> 426 427 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 428 #pragma GCC system_header 429 #endif 430 431 _LIBCPP_BEGIN_NAMESPACE_STD 432 433 struct _LIBCPP_TEMPLATE_VIS input_iterator_tag {}; 434 struct _LIBCPP_TEMPLATE_VIS output_iterator_tag {}; 435 struct _LIBCPP_TEMPLATE_VIS forward_iterator_tag : public input_iterator_tag {}; 436 struct _LIBCPP_TEMPLATE_VIS bidirectional_iterator_tag : public forward_iterator_tag {}; 437 struct _LIBCPP_TEMPLATE_VIS random_access_iterator_tag : public bidirectional_iterator_tag {}; 438 439 template <class _Tp> 440 struct __has_iterator_category 441 { 442 private: 443 struct __two {char __lx; char __lxx;}; 444 template <class _Up> static __two __test(...); 445 template <class _Up> static char __test(typename _Up::iterator_category* = 0); 446 public: 447 static const bool value = sizeof(__test<_Tp>(0)) == 1; 448 }; 449 450 template <class _Iter, bool> struct __iterator_traits_impl {}; 451 452 template <class _Iter> 453 struct __iterator_traits_impl<_Iter, true> 454 { 455 typedef typename _Iter::difference_type difference_type; 456 typedef typename _Iter::value_type value_type; 457 typedef typename _Iter::pointer pointer; 458 typedef typename _Iter::reference reference; 459 typedef typename _Iter::iterator_category iterator_category; 460 }; 461 462 template <class _Iter, bool> struct __iterator_traits {}; 463 464 template <class _Iter> 465 struct __iterator_traits<_Iter, true> 466 : __iterator_traits_impl 467 < 468 _Iter, 469 is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value || 470 is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value 471 > 472 {}; 473 474 // iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category 475 // exists. Else iterator_traits<Iterator> will be an empty class. This is a 476 // conforming extension which allows some programs to compile and behave as 477 // the client expects instead of failing at compile time. 478 479 template <class _Iter> 480 struct _LIBCPP_TEMPLATE_VIS iterator_traits 481 : __iterator_traits<_Iter, __has_iterator_category<_Iter>::value> {}; 482 483 template<class _Tp> 484 struct _LIBCPP_TEMPLATE_VIS iterator_traits<_Tp*> 485 { 486 typedef ptrdiff_t difference_type; 487 typedef typename remove_cv<_Tp>::type value_type; 488 typedef _Tp* pointer; 489 typedef _Tp& reference; 490 typedef random_access_iterator_tag iterator_category; 491 }; 492 493 template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value> 494 struct __has_iterator_category_convertible_to 495 : public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value> 496 {}; 497 498 template <class _Tp, class _Up> 499 struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {}; 500 501 template <class _Tp> 502 struct __is_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {}; 503 504 template <class _Tp> 505 struct __is_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {}; 506 507 template <class _Tp> 508 struct __is_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {}; 509 510 template <class _Tp> 511 struct __is_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {}; 512 513 template <class _Tp> 514 struct __is_exactly_input_iterator 515 : public integral_constant<bool, 516 __has_iterator_category_convertible_to<_Tp, input_iterator_tag>::value && 517 !__has_iterator_category_convertible_to<_Tp, forward_iterator_tag>::value> {}; 518 519 template<class _Category, class _Tp, class _Distance = ptrdiff_t, 520 class _Pointer = _Tp*, class _Reference = _Tp&> 521 struct _LIBCPP_TEMPLATE_VIS iterator 522 { 523 typedef _Tp value_type; 524 typedef _Distance difference_type; 525 typedef _Pointer pointer; 526 typedef _Reference reference; 527 typedef _Category iterator_category; 528 }; 529 530 template <class _InputIter> 531 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 532 void __advance(_InputIter& __i, 533 typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag) 534 { 535 for (; __n > 0; --__n) 536 ++__i; 537 } 538 539 template <class _BiDirIter> 540 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 541 void __advance(_BiDirIter& __i, 542 typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag) 543 { 544 if (__n >= 0) 545 for (; __n > 0; --__n) 546 ++__i; 547 else 548 for (; __n < 0; ++__n) 549 --__i; 550 } 551 552 template <class _RandIter> 553 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 554 void __advance(_RandIter& __i, 555 typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag) 556 { 557 __i += __n; 558 } 559 560 template <class _InputIter> 561 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 562 void advance(_InputIter& __i, 563 typename iterator_traits<_InputIter>::difference_type __n) 564 { 565 __advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category()); 566 } 567 568 template <class _InputIter> 569 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 570 typename iterator_traits<_InputIter>::difference_type 571 __distance(_InputIter __first, _InputIter __last, input_iterator_tag) 572 { 573 typename iterator_traits<_InputIter>::difference_type __r(0); 574 for (; __first != __last; ++__first) 575 ++__r; 576 return __r; 577 } 578 579 template <class _RandIter> 580 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 581 typename iterator_traits<_RandIter>::difference_type 582 __distance(_RandIter __first, _RandIter __last, random_access_iterator_tag) 583 { 584 return __last - __first; 585 } 586 587 template <class _InputIter> 588 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 589 typename iterator_traits<_InputIter>::difference_type 590 distance(_InputIter __first, _InputIter __last) 591 { 592 return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category()); 593 } 594 595 template <class _InputIter> 596 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 597 typename enable_if 598 < 599 __is_input_iterator<_InputIter>::value, 600 _InputIter 601 >::type 602 next(_InputIter __x, 603 typename iterator_traits<_InputIter>::difference_type __n = 1) 604 { 605 _VSTD::advance(__x, __n); 606 return __x; 607 } 608 609 template <class _BidirectionalIter> 610 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 611 typename enable_if 612 < 613 __is_bidirectional_iterator<_BidirectionalIter>::value, 614 _BidirectionalIter 615 >::type 616 prev(_BidirectionalIter __x, 617 typename iterator_traits<_BidirectionalIter>::difference_type __n = 1) 618 { 619 _VSTD::advance(__x, -__n); 620 return __x; 621 } 622 623 624 template <class _Tp, class = void> 625 struct __is_stashing_iterator : false_type {}; 626 627 template <class _Tp> 628 struct __is_stashing_iterator<_Tp, typename __void_t<typename _Tp::__stashing_iterator_tag>::type> 629 : true_type {}; 630 631 template <class _Iter> 632 class _LIBCPP_TEMPLATE_VIS reverse_iterator 633 : public iterator<typename iterator_traits<_Iter>::iterator_category, 634 typename iterator_traits<_Iter>::value_type, 635 typename iterator_traits<_Iter>::difference_type, 636 typename iterator_traits<_Iter>::pointer, 637 typename iterator_traits<_Iter>::reference> 638 { 639 private: 640 /*mutable*/ _Iter __t; // no longer used as of LWG #2360, not removed due to ABI break 641 642 static_assert(!__is_stashing_iterator<_Iter>::value, 643 "The specified iterator type cannot be used with reverse_iterator; " 644 "Using stashing iterators with reverse_iterator causes undefined behavior"); 645 646 protected: 647 _Iter current; 648 public: 649 typedef _Iter iterator_type; 650 typedef typename iterator_traits<_Iter>::difference_type difference_type; 651 typedef typename iterator_traits<_Iter>::reference reference; 652 typedef typename iterator_traits<_Iter>::pointer pointer; 653 654 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 655 reverse_iterator() : __t(), current() {} 656 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 657 explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {} 658 template <class _Up> 659 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 660 reverse_iterator(const reverse_iterator<_Up>& __u) : __t(__u.base()), current(__u.base()) {} 661 template <class _Up> 662 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 663 reverse_iterator& operator=(const reverse_iterator<_Up>& __u) 664 { __t = current = __u.base(); return *this; } 665 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 666 _Iter base() const {return current;} 667 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 668 reference operator*() const {_Iter __tmp = current; return *--__tmp;} 669 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 670 pointer operator->() const {return _VSTD::addressof(operator*());} 671 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 672 reverse_iterator& operator++() {--current; return *this;} 673 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 674 reverse_iterator operator++(int) {reverse_iterator __tmp(*this); --current; return __tmp;} 675 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 676 reverse_iterator& operator--() {++current; return *this;} 677 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 678 reverse_iterator operator--(int) {reverse_iterator __tmp(*this); ++current; return __tmp;} 679 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 680 reverse_iterator operator+ (difference_type __n) const {return reverse_iterator(current - __n);} 681 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 682 reverse_iterator& operator+=(difference_type __n) {current -= __n; return *this;} 683 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 684 reverse_iterator operator- (difference_type __n) const {return reverse_iterator(current + __n);} 685 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 686 reverse_iterator& operator-=(difference_type __n) {current += __n; return *this;} 687 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 688 reference operator[](difference_type __n) const {return *(*this + __n);} 689 }; 690 691 template <class _Iter1, class _Iter2> 692 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 693 bool 694 operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 695 { 696 return __x.base() == __y.base(); 697 } 698 699 template <class _Iter1, class _Iter2> 700 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 701 bool 702 operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 703 { 704 return __x.base() > __y.base(); 705 } 706 707 template <class _Iter1, class _Iter2> 708 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 709 bool 710 operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 711 { 712 return __x.base() != __y.base(); 713 } 714 715 template <class _Iter1, class _Iter2> 716 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 717 bool 718 operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 719 { 720 return __x.base() < __y.base(); 721 } 722 723 template <class _Iter1, class _Iter2> 724 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 725 bool 726 operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 727 { 728 return __x.base() <= __y.base(); 729 } 730 731 template <class _Iter1, class _Iter2> 732 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 733 bool 734 operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 735 { 736 return __x.base() >= __y.base(); 737 } 738 739 #ifndef _LIBCPP_CXX03_LANG 740 template <class _Iter1, class _Iter2> 741 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 742 auto 743 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 744 -> decltype(__y.base() - __x.base()) 745 { 746 return __y.base() - __x.base(); 747 } 748 #else 749 template <class _Iter1, class _Iter2> 750 inline _LIBCPP_INLINE_VISIBILITY 751 typename reverse_iterator<_Iter1>::difference_type 752 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 753 { 754 return __y.base() - __x.base(); 755 } 756 #endif 757 758 template <class _Iter> 759 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 760 reverse_iterator<_Iter> 761 operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x) 762 { 763 return reverse_iterator<_Iter>(__x.base() - __n); 764 } 765 766 #if _LIBCPP_STD_VER > 11 767 template <class _Iter> 768 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 769 reverse_iterator<_Iter> make_reverse_iterator(_Iter __i) 770 { 771 return reverse_iterator<_Iter>(__i); 772 } 773 #endif 774 775 template <class _Container> 776 class _LIBCPP_TEMPLATE_VIS back_insert_iterator 777 : public iterator<output_iterator_tag, 778 void, 779 void, 780 void, 781 void> 782 { 783 protected: 784 _Container* container; 785 public: 786 typedef _Container container_type; 787 788 _LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} 789 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_) 790 {container->push_back(__value_); return *this;} 791 #ifndef _LIBCPP_CXX03_LANG 792 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_) 793 {container->push_back(_VSTD::move(__value_)); return *this;} 794 #endif // _LIBCPP_CXX03_LANG 795 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;} 796 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;} 797 _LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;} 798 }; 799 800 template <class _Container> 801 inline _LIBCPP_INLINE_VISIBILITY 802 back_insert_iterator<_Container> 803 back_inserter(_Container& __x) 804 { 805 return back_insert_iterator<_Container>(__x); 806 } 807 808 template <class _Container> 809 class _LIBCPP_TEMPLATE_VIS front_insert_iterator 810 : public iterator<output_iterator_tag, 811 void, 812 void, 813 void, 814 void> 815 { 816 protected: 817 _Container* container; 818 public: 819 typedef _Container container_type; 820 821 _LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} 822 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_) 823 {container->push_front(__value_); return *this;} 824 #ifndef _LIBCPP_CXX03_LANG 825 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_) 826 {container->push_front(_VSTD::move(__value_)); return *this;} 827 #endif // _LIBCPP_CXX03_LANG 828 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;} 829 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;} 830 _LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;} 831 }; 832 833 template <class _Container> 834 inline _LIBCPP_INLINE_VISIBILITY 835 front_insert_iterator<_Container> 836 front_inserter(_Container& __x) 837 { 838 return front_insert_iterator<_Container>(__x); 839 } 840 841 template <class _Container> 842 class _LIBCPP_TEMPLATE_VIS insert_iterator 843 : public iterator<output_iterator_tag, 844 void, 845 void, 846 void, 847 void> 848 { 849 protected: 850 _Container* container; 851 typename _Container::iterator iter; 852 public: 853 typedef _Container container_type; 854 855 _LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i) 856 : container(_VSTD::addressof(__x)), iter(__i) {} 857 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_) 858 {iter = container->insert(iter, __value_); ++iter; return *this;} 859 #ifndef _LIBCPP_CXX03_LANG 860 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_) 861 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;} 862 #endif // _LIBCPP_CXX03_LANG 863 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;} 864 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;} 865 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;} 866 }; 867 868 template <class _Container> 869 inline _LIBCPP_INLINE_VISIBILITY 870 insert_iterator<_Container> 871 inserter(_Container& __x, typename _Container::iterator __i) 872 { 873 return insert_iterator<_Container>(__x, __i); 874 } 875 876 template <class _Tp, class _CharT = char, 877 class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t> 878 class _LIBCPP_TEMPLATE_VIS istream_iterator 879 : public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&> 880 { 881 public: 882 typedef _CharT char_type; 883 typedef _Traits traits_type; 884 typedef basic_istream<_CharT,_Traits> istream_type; 885 private: 886 istream_type* __in_stream_; 887 _Tp __value_; 888 public: 889 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(0), __value_() {} 890 _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(_VSTD::addressof(__s)) 891 { 892 if (!(*__in_stream_ >> __value_)) 893 __in_stream_ = 0; 894 } 895 896 _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;} 897 _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return _VSTD::addressof((operator*()));} 898 _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++() 899 { 900 if (!(*__in_stream_ >> __value_)) 901 __in_stream_ = 0; 902 return *this; 903 } 904 _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int) 905 {istream_iterator __t(*this); ++(*this); return __t;} 906 907 template <class _Up, class _CharU, class _TraitsU, class _DistanceU> 908 friend _LIBCPP_INLINE_VISIBILITY 909 bool 910 operator==(const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __x, 911 const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __y); 912 913 template <class _Up, class _CharU, class _TraitsU, class _DistanceU> 914 friend _LIBCPP_INLINE_VISIBILITY 915 bool 916 operator==(const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __x, 917 const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __y); 918 }; 919 920 template <class _Tp, class _CharT, class _Traits, class _Distance> 921 inline _LIBCPP_INLINE_VISIBILITY 922 bool 923 operator==(const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __x, 924 const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __y) 925 { 926 return __x.__in_stream_ == __y.__in_stream_; 927 } 928 929 template <class _Tp, class _CharT, class _Traits, class _Distance> 930 inline _LIBCPP_INLINE_VISIBILITY 931 bool 932 operator!=(const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __x, 933 const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __y) 934 { 935 return !(__x == __y); 936 } 937 938 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> > 939 class _LIBCPP_TEMPLATE_VIS ostream_iterator 940 : public iterator<output_iterator_tag, void, void, void, void> 941 { 942 public: 943 typedef _CharT char_type; 944 typedef _Traits traits_type; 945 typedef basic_ostream<_CharT,_Traits> ostream_type; 946 private: 947 ostream_type* __out_stream_; 948 const char_type* __delim_; 949 public: 950 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT 951 : __out_stream_(_VSTD::addressof(__s)), __delim_(0) {} 952 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT 953 : __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {} 954 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_) 955 { 956 *__out_stream_ << __value_; 957 if (__delim_) 958 *__out_stream_ << __delim_; 959 return *this; 960 } 961 962 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;} 963 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;} 964 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;} 965 }; 966 967 template<class _CharT, class _Traits> 968 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator 969 : public iterator<input_iterator_tag, _CharT, 970 typename _Traits::off_type, _CharT*, 971 _CharT> 972 { 973 public: 974 typedef _CharT char_type; 975 typedef _Traits traits_type; 976 typedef typename _Traits::int_type int_type; 977 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 978 typedef basic_istream<_CharT,_Traits> istream_type; 979 private: 980 mutable streambuf_type* __sbuf_; 981 982 class __proxy 983 { 984 char_type __keep_; 985 streambuf_type* __sbuf_; 986 _LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s) 987 : __keep_(__c), __sbuf_(__s) {} 988 friend class istreambuf_iterator; 989 public: 990 _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;} 991 }; 992 993 _LIBCPP_INLINE_VISIBILITY 994 bool __test_for_eof() const 995 { 996 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof())) 997 __sbuf_ = 0; 998 return __sbuf_ == 0; 999 } 1000 public: 1001 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(0) {} 1002 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT 1003 : __sbuf_(__s.rdbuf()) {} 1004 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT 1005 : __sbuf_(__s) {} 1006 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT 1007 : __sbuf_(__p.__sbuf_) {} 1008 1009 _LIBCPP_INLINE_VISIBILITY char_type operator*() const 1010 {return static_cast<char_type>(__sbuf_->sgetc());} 1011 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++() 1012 { 1013 __sbuf_->sbumpc(); 1014 return *this; 1015 } 1016 _LIBCPP_INLINE_VISIBILITY __proxy operator++(int) 1017 { 1018 return __proxy(__sbuf_->sbumpc(), __sbuf_); 1019 } 1020 1021 _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const 1022 {return __test_for_eof() == __b.__test_for_eof();} 1023 }; 1024 1025 template <class _CharT, class _Traits> 1026 inline _LIBCPP_INLINE_VISIBILITY 1027 bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a, 1028 const istreambuf_iterator<_CharT,_Traits>& __b) 1029 {return __a.equal(__b);} 1030 1031 template <class _CharT, class _Traits> 1032 inline _LIBCPP_INLINE_VISIBILITY 1033 bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a, 1034 const istreambuf_iterator<_CharT,_Traits>& __b) 1035 {return !__a.equal(__b);} 1036 1037 template <class _CharT, class _Traits> 1038 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator 1039 : public iterator<output_iterator_tag, void, void, void, void> 1040 { 1041 public: 1042 typedef _CharT char_type; 1043 typedef _Traits traits_type; 1044 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 1045 typedef basic_ostream<_CharT,_Traits> ostream_type; 1046 private: 1047 streambuf_type* __sbuf_; 1048 public: 1049 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT 1050 : __sbuf_(__s.rdbuf()) {} 1051 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT 1052 : __sbuf_(__s) {} 1053 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c) 1054 { 1055 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) 1056 __sbuf_ = 0; 1057 return *this; 1058 } 1059 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;} 1060 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;} 1061 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;} 1062 _LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == 0;} 1063 1064 #if !defined(__APPLE__) || \ 1065 (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_8) || \ 1066 (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0) 1067 1068 template <class _Ch, class _Tr> 1069 friend 1070 _LIBCPP_HIDDEN 1071 ostreambuf_iterator<_Ch, _Tr> 1072 __pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s, 1073 const _Ch* __ob, const _Ch* __op, const _Ch* __oe, 1074 ios_base& __iob, _Ch __fl); 1075 #endif 1076 }; 1077 1078 template <class _Iter> 1079 class _LIBCPP_TEMPLATE_VIS move_iterator 1080 { 1081 private: 1082 _Iter __i; 1083 public: 1084 typedef _Iter iterator_type; 1085 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1086 typedef typename iterator_traits<iterator_type>::value_type value_type; 1087 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1088 typedef iterator_type pointer; 1089 #ifndef _LIBCPP_CXX03_LANG 1090 typedef typename iterator_traits<iterator_type>::reference __reference; 1091 typedef typename conditional< 1092 is_reference<__reference>::value, 1093 typename remove_reference<__reference>::type&&, 1094 __reference 1095 >::type reference; 1096 #else 1097 typedef typename iterator_traits<iterator_type>::reference reference; 1098 #endif 1099 1100 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1101 move_iterator() : __i() {} 1102 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1103 explicit move_iterator(_Iter __x) : __i(__x) {} 1104 template <class _Up> 1105 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1106 move_iterator(const move_iterator<_Up>& __u) : __i(__u.base()) {} 1107 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 _Iter base() const {return __i;} 1108 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1109 reference operator*() const { return static_cast<reference>(*__i); } 1110 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1111 pointer operator->() const { return __i;} 1112 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1113 move_iterator& operator++() {++__i; return *this;} 1114 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1115 move_iterator operator++(int) {move_iterator __tmp(*this); ++__i; return __tmp;} 1116 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1117 move_iterator& operator--() {--__i; return *this;} 1118 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1119 move_iterator operator--(int) {move_iterator __tmp(*this); --__i; return __tmp;} 1120 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1121 move_iterator operator+ (difference_type __n) const {return move_iterator(__i + __n);} 1122 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1123 move_iterator& operator+=(difference_type __n) {__i += __n; return *this;} 1124 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1125 move_iterator operator- (difference_type __n) const {return move_iterator(__i - __n);} 1126 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1127 move_iterator& operator-=(difference_type __n) {__i -= __n; return *this;} 1128 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1129 reference operator[](difference_type __n) const { return static_cast<reference>(__i[__n]); } 1130 }; 1131 1132 template <class _Iter1, class _Iter2> 1133 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1134 bool 1135 operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1136 { 1137 return __x.base() == __y.base(); 1138 } 1139 1140 template <class _Iter1, class _Iter2> 1141 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1142 bool 1143 operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1144 { 1145 return __x.base() < __y.base(); 1146 } 1147 1148 template <class _Iter1, class _Iter2> 1149 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1150 bool 1151 operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1152 { 1153 return __x.base() != __y.base(); 1154 } 1155 1156 template <class _Iter1, class _Iter2> 1157 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1158 bool 1159 operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1160 { 1161 return __x.base() > __y.base(); 1162 } 1163 1164 template <class _Iter1, class _Iter2> 1165 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1166 bool 1167 operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1168 { 1169 return __x.base() >= __y.base(); 1170 } 1171 1172 template <class _Iter1, class _Iter2> 1173 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1174 bool 1175 operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1176 { 1177 return __x.base() <= __y.base(); 1178 } 1179 1180 #ifndef _LIBCPP_CXX03_LANG 1181 template <class _Iter1, class _Iter2> 1182 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1183 auto 1184 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1185 -> decltype(__x.base() - __y.base()) 1186 { 1187 return __x.base() - __y.base(); 1188 } 1189 #else 1190 template <class _Iter1, class _Iter2> 1191 inline _LIBCPP_INLINE_VISIBILITY 1192 typename move_iterator<_Iter1>::difference_type 1193 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1194 { 1195 return __x.base() - __y.base(); 1196 } 1197 #endif 1198 1199 template <class _Iter> 1200 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1201 move_iterator<_Iter> 1202 operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x) 1203 { 1204 return move_iterator<_Iter>(__x.base() + __n); 1205 } 1206 1207 template <class _Iter> 1208 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1209 move_iterator<_Iter> 1210 make_move_iterator(_Iter __i) 1211 { 1212 return move_iterator<_Iter>(__i); 1213 } 1214 1215 // __wrap_iter 1216 1217 template <class _Iter> class __wrap_iter; 1218 1219 template <class _Iter1, class _Iter2> 1220 _LIBCPP_INLINE_VISIBILITY 1221 bool 1222 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1223 1224 template <class _Iter1, class _Iter2> 1225 _LIBCPP_INLINE_VISIBILITY 1226 bool 1227 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1228 1229 template <class _Iter1, class _Iter2> 1230 _LIBCPP_INLINE_VISIBILITY 1231 bool 1232 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1233 1234 template <class _Iter1, class _Iter2> 1235 _LIBCPP_INLINE_VISIBILITY 1236 bool 1237 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1238 1239 template <class _Iter1, class _Iter2> 1240 _LIBCPP_INLINE_VISIBILITY 1241 bool 1242 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1243 1244 template <class _Iter1, class _Iter2> 1245 _LIBCPP_INLINE_VISIBILITY 1246 bool 1247 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1248 1249 #ifndef _LIBCPP_CXX03_LANG 1250 template <class _Iter1, class _Iter2> 1251 _LIBCPP_INLINE_VISIBILITY 1252 auto 1253 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1254 -> decltype(__x.base() - __y.base()); 1255 #else 1256 template <class _Iter1, class _Iter2> 1257 _LIBCPP_INLINE_VISIBILITY 1258 typename __wrap_iter<_Iter1>::difference_type 1259 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1260 #endif 1261 1262 template <class _Iter> 1263 _LIBCPP_INLINE_VISIBILITY 1264 __wrap_iter<_Iter> 1265 operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT_DEBUG; 1266 1267 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY copy(_Ip, _Ip, _Op); 1268 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY copy_backward(_B1, _B1, _B2); 1269 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY move(_Ip, _Ip, _Op); 1270 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY move_backward(_B1, _B1, _B2); 1271 1272 #if _LIBCPP_DEBUG_LEVEL < 2 1273 1274 template <class _Tp> 1275 _LIBCPP_INLINE_VISIBILITY 1276 typename enable_if 1277 < 1278 is_trivially_copy_assignable<_Tp>::value, 1279 _Tp* 1280 >::type 1281 __unwrap_iter(__wrap_iter<_Tp*>); 1282 1283 #else 1284 1285 template <class _Tp> 1286 inline _LIBCPP_INLINE_VISIBILITY 1287 typename enable_if 1288 < 1289 is_trivially_copy_assignable<_Tp>::value, 1290 __wrap_iter<_Tp*> 1291 >::type 1292 __unwrap_iter(__wrap_iter<_Tp*> __i); 1293 1294 #endif 1295 1296 template <class _Iter> 1297 class __wrap_iter 1298 { 1299 public: 1300 typedef _Iter iterator_type; 1301 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1302 typedef typename iterator_traits<iterator_type>::value_type value_type; 1303 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1304 typedef typename iterator_traits<iterator_type>::pointer pointer; 1305 typedef typename iterator_traits<iterator_type>::reference reference; 1306 private: 1307 iterator_type __i; 1308 public: 1309 _LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT_DEBUG 1310 #if _LIBCPP_STD_VER > 11 1311 : __i{} 1312 #endif 1313 { 1314 #if _LIBCPP_DEBUG_LEVEL >= 2 1315 __get_db()->__insert_i(this); 1316 #endif 1317 } 1318 template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u, 1319 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT_DEBUG 1320 : __i(__u.base()) 1321 { 1322 #if _LIBCPP_DEBUG_LEVEL >= 2 1323 __get_db()->__iterator_copy(this, &__u); 1324 #endif 1325 } 1326 #if _LIBCPP_DEBUG_LEVEL >= 2 1327 _LIBCPP_INLINE_VISIBILITY 1328 __wrap_iter(const __wrap_iter& __x) 1329 : __i(__x.base()) 1330 { 1331 __get_db()->__iterator_copy(this, &__x); 1332 } 1333 _LIBCPP_INLINE_VISIBILITY 1334 __wrap_iter& operator=(const __wrap_iter& __x) 1335 { 1336 if (this != &__x) 1337 { 1338 __get_db()->__iterator_copy(this, &__x); 1339 __i = __x.__i; 1340 } 1341 return *this; 1342 } 1343 _LIBCPP_INLINE_VISIBILITY 1344 ~__wrap_iter() 1345 { 1346 __get_db()->__erase_i(this); 1347 } 1348 #endif 1349 _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT_DEBUG 1350 { 1351 #if _LIBCPP_DEBUG_LEVEL >= 2 1352 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1353 "Attempted to dereference a non-dereferenceable iterator"); 1354 #endif 1355 return *__i; 1356 } 1357 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT_DEBUG 1358 { 1359 #if _LIBCPP_DEBUG_LEVEL >= 2 1360 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1361 "Attempted to dereference a non-dereferenceable iterator"); 1362 #endif 1363 return (pointer)_VSTD::addressof(*__i); 1364 } 1365 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT_DEBUG 1366 { 1367 #if _LIBCPP_DEBUG_LEVEL >= 2 1368 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1369 "Attempted to increment non-incrementable iterator"); 1370 #endif 1371 ++__i; 1372 return *this; 1373 } 1374 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT_DEBUG 1375 {__wrap_iter __tmp(*this); ++(*this); return __tmp;} 1376 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT_DEBUG 1377 { 1378 #if _LIBCPP_DEBUG_LEVEL >= 2 1379 _LIBCPP_ASSERT(__get_const_db()->__decrementable(this), 1380 "Attempted to decrement non-decrementable iterator"); 1381 #endif 1382 --__i; 1383 return *this; 1384 } 1385 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT_DEBUG 1386 {__wrap_iter __tmp(*this); --(*this); return __tmp;} 1387 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT_DEBUG 1388 {__wrap_iter __w(*this); __w += __n; return __w;} 1389 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT_DEBUG 1390 { 1391 #if _LIBCPP_DEBUG_LEVEL >= 2 1392 _LIBCPP_ASSERT(__get_const_db()->__addable(this, __n), 1393 "Attempted to add/subtract iterator outside of valid range"); 1394 #endif 1395 __i += __n; 1396 return *this; 1397 } 1398 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT_DEBUG 1399 {return *this + (-__n);} 1400 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT_DEBUG 1401 {*this += -__n; return *this;} 1402 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT_DEBUG 1403 { 1404 #if _LIBCPP_DEBUG_LEVEL >= 2 1405 _LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n), 1406 "Attempted to subscript iterator outside of valid range"); 1407 #endif 1408 return __i[__n]; 1409 } 1410 1411 _LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT_DEBUG {return __i;} 1412 1413 private: 1414 #if _LIBCPP_DEBUG_LEVEL >= 2 1415 _LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x) 1416 { 1417 __get_db()->__insert_ic(this, __p); 1418 } 1419 #else 1420 _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT_DEBUG : __i(__x) {} 1421 #endif 1422 1423 template <class _Up> friend class __wrap_iter; 1424 template <class _CharT, class _Traits, class _Alloc> friend class basic_string; 1425 template <class _Tp, class _Alloc> friend class _LIBCPP_TEMPLATE_VIS vector; 1426 1427 template <class _Iter1, class _Iter2> 1428 friend 1429 bool 1430 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1431 1432 template <class _Iter1, class _Iter2> 1433 friend 1434 bool 1435 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1436 1437 template <class _Iter1, class _Iter2> 1438 friend 1439 bool 1440 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1441 1442 template <class _Iter1, class _Iter2> 1443 friend 1444 bool 1445 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1446 1447 template <class _Iter1, class _Iter2> 1448 friend 1449 bool 1450 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1451 1452 template <class _Iter1, class _Iter2> 1453 friend 1454 bool 1455 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1456 1457 #ifndef _LIBCPP_CXX03_LANG 1458 template <class _Iter1, class _Iter2> 1459 friend 1460 auto 1461 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1462 -> decltype(__x.base() - __y.base()); 1463 #else 1464 template <class _Iter1, class _Iter2> 1465 friend 1466 typename __wrap_iter<_Iter1>::difference_type 1467 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1468 #endif 1469 1470 template <class _Iter1> 1471 friend 1472 __wrap_iter<_Iter1> 1473 operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT_DEBUG; 1474 1475 template <class _Ip, class _Op> friend _Op copy(_Ip, _Ip, _Op); 1476 template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2); 1477 template <class _Ip, class _Op> friend _Op move(_Ip, _Ip, _Op); 1478 template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2); 1479 1480 #if _LIBCPP_DEBUG_LEVEL < 2 1481 template <class _Tp> 1482 friend 1483 typename enable_if 1484 < 1485 is_trivially_copy_assignable<_Tp>::value, 1486 _Tp* 1487 >::type 1488 __unwrap_iter(__wrap_iter<_Tp*>); 1489 #else 1490 template <class _Tp> 1491 inline _LIBCPP_INLINE_VISIBILITY 1492 typename enable_if 1493 < 1494 is_trivially_copy_assignable<_Tp>::value, 1495 __wrap_iter<_Tp*> 1496 >::type 1497 __unwrap_iter(__wrap_iter<_Tp*> __i); 1498 #endif 1499 }; 1500 1501 template <class _Iter1, class _Iter2> 1502 inline _LIBCPP_INLINE_VISIBILITY 1503 bool 1504 operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1505 { 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 #if _LIBCPP_DEBUG_LEVEL >= 2 1515 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1516 "Attempted to compare incomparable iterators"); 1517 #endif 1518 return __x.base() < __y.base(); 1519 } 1520 1521 template <class _Iter1, class _Iter2> 1522 inline _LIBCPP_INLINE_VISIBILITY 1523 bool 1524 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1525 { 1526 return !(__x == __y); 1527 } 1528 1529 template <class _Iter1, class _Iter2> 1530 inline _LIBCPP_INLINE_VISIBILITY 1531 bool 1532 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1533 { 1534 return __y < __x; 1535 } 1536 1537 template <class _Iter1, class _Iter2> 1538 inline _LIBCPP_INLINE_VISIBILITY 1539 bool 1540 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1541 { 1542 return !(__x < __y); 1543 } 1544 1545 template <class _Iter1, class _Iter2> 1546 inline _LIBCPP_INLINE_VISIBILITY 1547 bool 1548 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1549 { 1550 return !(__y < __x); 1551 } 1552 1553 template <class _Iter1> 1554 inline _LIBCPP_INLINE_VISIBILITY 1555 bool 1556 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1557 { 1558 return !(__x == __y); 1559 } 1560 1561 template <class _Iter1> 1562 inline _LIBCPP_INLINE_VISIBILITY 1563 bool 1564 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1565 { 1566 return __y < __x; 1567 } 1568 1569 template <class _Iter1> 1570 inline _LIBCPP_INLINE_VISIBILITY 1571 bool 1572 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1573 { 1574 return !(__x < __y); 1575 } 1576 1577 template <class _Iter1> 1578 inline _LIBCPP_INLINE_VISIBILITY 1579 bool 1580 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1581 { 1582 return !(__y < __x); 1583 } 1584 1585 #ifndef _LIBCPP_CXX03_LANG 1586 template <class _Iter1, class _Iter2> 1587 inline _LIBCPP_INLINE_VISIBILITY 1588 auto 1589 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1590 -> decltype(__x.base() - __y.base()) 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 #else 1599 template <class _Iter1, class _Iter2> 1600 inline _LIBCPP_INLINE_VISIBILITY 1601 typename __wrap_iter<_Iter1>::difference_type 1602 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1603 { 1604 #if _LIBCPP_DEBUG_LEVEL >= 2 1605 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1606 "Attempted to subtract incompatible iterators"); 1607 #endif 1608 return __x.base() - __y.base(); 1609 } 1610 #endif 1611 1612 template <class _Iter> 1613 inline _LIBCPP_INLINE_VISIBILITY 1614 __wrap_iter<_Iter> 1615 operator+(typename __wrap_iter<_Iter>::difference_type __n, 1616 __wrap_iter<_Iter> __x) _NOEXCEPT_DEBUG 1617 { 1618 __x += __n; 1619 return __x; 1620 } 1621 1622 template <class _Iter> 1623 struct __libcpp_is_trivial_iterator 1624 : public _LIBCPP_BOOL_CONSTANT(is_pointer<_Iter>::value) {}; 1625 1626 template <class _Iter> 1627 struct __libcpp_is_trivial_iterator<move_iterator<_Iter> > 1628 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1629 1630 template <class _Iter> 1631 struct __libcpp_is_trivial_iterator<reverse_iterator<_Iter> > 1632 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1633 1634 template <class _Iter> 1635 struct __libcpp_is_trivial_iterator<__wrap_iter<_Iter> > 1636 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1637 1638 1639 template <class _Tp, size_t _Np> 1640 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1641 _Tp* 1642 begin(_Tp (&__array)[_Np]) 1643 { 1644 return __array; 1645 } 1646 1647 template <class _Tp, size_t _Np> 1648 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1649 _Tp* 1650 end(_Tp (&__array)[_Np]) 1651 { 1652 return __array + _Np; 1653 } 1654 1655 #if !defined(_LIBCPP_CXX03_LANG) 1656 1657 template <class _Cp> 1658 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1659 auto 1660 begin(_Cp& __c) -> decltype(__c.begin()) 1661 { 1662 return __c.begin(); 1663 } 1664 1665 template <class _Cp> 1666 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1667 auto 1668 begin(const _Cp& __c) -> decltype(__c.begin()) 1669 { 1670 return __c.begin(); 1671 } 1672 1673 template <class _Cp> 1674 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1675 auto 1676 end(_Cp& __c) -> decltype(__c.end()) 1677 { 1678 return __c.end(); 1679 } 1680 1681 template <class _Cp> 1682 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1683 auto 1684 end(const _Cp& __c) -> decltype(__c.end()) 1685 { 1686 return __c.end(); 1687 } 1688 1689 #if _LIBCPP_STD_VER > 11 1690 1691 template <class _Tp, size_t _Np> 1692 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1693 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np]) 1694 { 1695 return reverse_iterator<_Tp*>(__array + _Np); 1696 } 1697 1698 template <class _Tp, size_t _Np> 1699 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1700 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np]) 1701 { 1702 return reverse_iterator<_Tp*>(__array); 1703 } 1704 1705 template <class _Ep> 1706 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1707 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il) 1708 { 1709 return reverse_iterator<const _Ep*>(__il.end()); 1710 } 1711 1712 template <class _Ep> 1713 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1714 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il) 1715 { 1716 return reverse_iterator<const _Ep*>(__il.begin()); 1717 } 1718 1719 template <class _Cp> 1720 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1721 auto cbegin(const _Cp& __c) -> decltype(_VSTD::begin(__c)) 1722 { 1723 return _VSTD::begin(__c); 1724 } 1725 1726 template <class _Cp> 1727 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1728 auto cend(const _Cp& __c) -> decltype(_VSTD::end(__c)) 1729 { 1730 return _VSTD::end(__c); 1731 } 1732 1733 template <class _Cp> 1734 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1735 auto rbegin(_Cp& __c) -> decltype(__c.rbegin()) 1736 { 1737 return __c.rbegin(); 1738 } 1739 1740 template <class _Cp> 1741 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1742 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin()) 1743 { 1744 return __c.rbegin(); 1745 } 1746 1747 template <class _Cp> 1748 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1749 auto rend(_Cp& __c) -> decltype(__c.rend()) 1750 { 1751 return __c.rend(); 1752 } 1753 1754 template <class _Cp> 1755 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1756 auto rend(const _Cp& __c) -> decltype(__c.rend()) 1757 { 1758 return __c.rend(); 1759 } 1760 1761 template <class _Cp> 1762 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1763 auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c)) 1764 { 1765 return _VSTD::rbegin(__c); 1766 } 1767 1768 template <class _Cp> 1769 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1770 auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c)) 1771 { 1772 return _VSTD::rend(__c); 1773 } 1774 1775 #endif 1776 1777 1778 #else // defined(_LIBCPP_CXX03_LANG) 1779 1780 template <class _Cp> 1781 inline _LIBCPP_INLINE_VISIBILITY 1782 typename _Cp::iterator 1783 begin(_Cp& __c) 1784 { 1785 return __c.begin(); 1786 } 1787 1788 template <class _Cp> 1789 inline _LIBCPP_INLINE_VISIBILITY 1790 typename _Cp::const_iterator 1791 begin(const _Cp& __c) 1792 { 1793 return __c.begin(); 1794 } 1795 1796 template <class _Cp> 1797 inline _LIBCPP_INLINE_VISIBILITY 1798 typename _Cp::iterator 1799 end(_Cp& __c) 1800 { 1801 return __c.end(); 1802 } 1803 1804 template <class _Cp> 1805 inline _LIBCPP_INLINE_VISIBILITY 1806 typename _Cp::const_iterator 1807 end(const _Cp& __c) 1808 { 1809 return __c.end(); 1810 } 1811 1812 #endif // !defined(_LIBCPP_CXX03_LANG) 1813 1814 #if _LIBCPP_STD_VER > 14 1815 1816 // #if _LIBCPP_STD_VER > 11 1817 // template <> 1818 // struct _LIBCPP_TEMPLATE_VIS plus<void> 1819 // { 1820 // template <class _T1, class _T2> 1821 // _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY 1822 // auto operator()(_T1&& __t, _T2&& __u) const 1823 // _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))) 1824 // -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)) 1825 // { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); } 1826 // typedef void is_transparent; 1827 // }; 1828 // #endif 1829 1830 template <class _Cont> 1831 inline _LIBCPP_INLINE_VISIBILITY 1832 constexpr auto size(const _Cont& __c) 1833 _NOEXCEPT_(noexcept(__c.size())) 1834 -> decltype (__c.size()) 1835 { return __c.size(); } 1836 1837 template <class _Tp, size_t _Sz> 1838 inline _LIBCPP_INLINE_VISIBILITY 1839 constexpr size_t size(const _Tp (&)[_Sz]) noexcept { return _Sz; } 1840 1841 template <class _Cont> 1842 _LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY 1843 constexpr auto empty(const _Cont& __c) 1844 _NOEXCEPT_(noexcept(__c.empty())) 1845 -> decltype (__c.empty()) 1846 { return __c.empty(); } 1847 1848 template <class _Tp, size_t _Sz> 1849 _LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY 1850 constexpr bool empty(const _Tp (&)[_Sz]) noexcept { return false; } 1851 1852 template <class _Ep> 1853 _LIBCPP_NODISCARD_AFTER_CXX17 inline _LIBCPP_INLINE_VISIBILITY 1854 constexpr bool empty(initializer_list<_Ep> __il) noexcept { return __il.size() == 0; } 1855 1856 template <class _Cont> constexpr 1857 inline _LIBCPP_INLINE_VISIBILITY 1858 auto data(_Cont& __c) 1859 _NOEXCEPT_(noexcept(__c.data())) 1860 -> decltype (__c.data()) 1861 { return __c.data(); } 1862 1863 template <class _Cont> constexpr 1864 inline _LIBCPP_INLINE_VISIBILITY 1865 auto data(const _Cont& __c) 1866 _NOEXCEPT_(noexcept(__c.data())) 1867 -> decltype (__c.data()) 1868 { return __c.data(); } 1869 1870 template <class _Tp, size_t _Sz> 1871 inline _LIBCPP_INLINE_VISIBILITY 1872 constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; } 1873 1874 template <class _Ep> 1875 inline _LIBCPP_INLINE_VISIBILITY 1876 constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); } 1877 #endif 1878 1879 1880 _LIBCPP_END_NAMESPACE_STD 1881 1882 #endif // _LIBCPP_ITERATOR 1883
