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 _InputIter 608 next(_InputIter __x, 609 typename iterator_traits<_InputIter>::difference_type __n = 1, 610 typename enable_if<__is_input_iterator<_InputIter>::value>::type* = 0) 611 { 612 _VSTD::advance(__x, __n); 613 return __x; 614 } 615 616 template <class _BidiretionalIter> 617 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 618 _BidiretionalIter 619 prev(_BidiretionalIter __x, 620 typename iterator_traits<_BidiretionalIter>::difference_type __n = 1, 621 typename enable_if<__is_bidirectional_iterator<_BidiretionalIter>::value>::type* = 0) 622 { 623 _VSTD::advance(__x, -__n); 624 return __x; 625 } 626 627 628 template <class _Tp, class = void> 629 struct __is_stashing_iterator : false_type {}; 630 631 template <class _Tp> 632 struct __is_stashing_iterator<_Tp, typename __void_t<typename _Tp::__stashing_iterator_tag>::type> 633 : true_type {}; 634 635 template <class _Iter> 636 class _LIBCPP_TEMPLATE_VIS reverse_iterator 637 : public iterator<typename iterator_traits<_Iter>::iterator_category, 638 typename iterator_traits<_Iter>::value_type, 639 typename iterator_traits<_Iter>::difference_type, 640 typename iterator_traits<_Iter>::pointer, 641 typename iterator_traits<_Iter>::reference> 642 { 643 private: 644 /*mutable*/ _Iter __t; // no longer used as of LWG #2360, not removed due to ABI break 645 646 static_assert(!__is_stashing_iterator<_Iter>::value, 647 "The specified iterator type cannot be used with reverse_iterator; " 648 "Using stashing iterators with reverse_iterator causes undefined behavior"); 649 650 protected: 651 _Iter current; 652 public: 653 typedef _Iter iterator_type; 654 typedef typename iterator_traits<_Iter>::difference_type difference_type; 655 typedef typename iterator_traits<_Iter>::reference reference; 656 typedef typename iterator_traits<_Iter>::pointer pointer; 657 658 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 659 reverse_iterator() : __t(), current() {} 660 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 661 explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {} 662 template <class _Up> 663 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 664 reverse_iterator(const reverse_iterator<_Up>& __u) : __t(__u.base()), current(__u.base()) {} 665 template <class _Up> 666 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 667 reverse_iterator& operator=(const reverse_iterator<_Up>& __u) 668 { __t = current = __u.base(); return *this; } 669 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 670 _Iter base() const {return current;} 671 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 672 reference operator*() const {_Iter __tmp = current; return *--__tmp;} 673 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 674 pointer operator->() const {return _VSTD::addressof(operator*());} 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--() {++current; return *this;} 681 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 682 reverse_iterator operator--(int) {reverse_iterator __tmp(*this); ++current; return __tmp;} 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 reverse_iterator operator- (difference_type __n) const {return reverse_iterator(current + __n);} 689 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 690 reverse_iterator& operator-=(difference_type __n) {current += __n; return *this;} 691 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 692 reference operator[](difference_type __n) const {return *(*this + __n);} 693 }; 694 695 template <class _Iter1, class _Iter2> 696 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 697 bool 698 operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 699 { 700 return __x.base() == __y.base(); 701 } 702 703 template <class _Iter1, class _Iter2> 704 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 705 bool 706 operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 707 { 708 return __x.base() > __y.base(); 709 } 710 711 template <class _Iter1, class _Iter2> 712 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 713 bool 714 operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 715 { 716 return __x.base() != __y.base(); 717 } 718 719 template <class _Iter1, class _Iter2> 720 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 721 bool 722 operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 723 { 724 return __x.base() < __y.base(); 725 } 726 727 template <class _Iter1, class _Iter2> 728 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 729 bool 730 operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 731 { 732 return __x.base() <= __y.base(); 733 } 734 735 template <class _Iter1, class _Iter2> 736 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 737 bool 738 operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 739 { 740 return __x.base() >= __y.base(); 741 } 742 743 #ifndef _LIBCPP_CXX03_LANG 744 template <class _Iter1, class _Iter2> 745 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 746 auto 747 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 748 -> decltype(__y.base() - __x.base()) 749 { 750 return __y.base() - __x.base(); 751 } 752 #else 753 template <class _Iter1, class _Iter2> 754 inline _LIBCPP_INLINE_VISIBILITY 755 typename reverse_iterator<_Iter1>::difference_type 756 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y) 757 { 758 return __y.base() - __x.base(); 759 } 760 #endif 761 762 template <class _Iter> 763 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 764 reverse_iterator<_Iter> 765 operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x) 766 { 767 return reverse_iterator<_Iter>(__x.base() - __n); 768 } 769 770 #if _LIBCPP_STD_VER > 11 771 template <class _Iter> 772 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 773 reverse_iterator<_Iter> make_reverse_iterator(_Iter __i) 774 { 775 return reverse_iterator<_Iter>(__i); 776 } 777 #endif 778 779 template <class _Container> 780 class _LIBCPP_TEMPLATE_VIS back_insert_iterator 781 : public iterator<output_iterator_tag, 782 void, 783 void, 784 void, 785 void> 786 { 787 protected: 788 _Container* container; 789 public: 790 typedef _Container container_type; 791 792 _LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} 793 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_) 794 {container->push_back(__value_); return *this;} 795 #ifndef _LIBCPP_CXX03_LANG 796 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_) 797 {container->push_back(_VSTD::move(__value_)); return *this;} 798 #endif // _LIBCPP_CXX03_LANG 799 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;} 800 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;} 801 _LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;} 802 }; 803 804 template <class _Container> 805 inline _LIBCPP_INLINE_VISIBILITY 806 back_insert_iterator<_Container> 807 back_inserter(_Container& __x) 808 { 809 return back_insert_iterator<_Container>(__x); 810 } 811 812 template <class _Container> 813 class _LIBCPP_TEMPLATE_VIS front_insert_iterator 814 : public iterator<output_iterator_tag, 815 void, 816 void, 817 void, 818 void> 819 { 820 protected: 821 _Container* container; 822 public: 823 typedef _Container container_type; 824 825 _LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {} 826 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_) 827 {container->push_front(__value_); return *this;} 828 #ifndef _LIBCPP_CXX03_LANG 829 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_) 830 {container->push_front(_VSTD::move(__value_)); return *this;} 831 #endif // _LIBCPP_CXX03_LANG 832 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;} 833 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;} 834 _LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;} 835 }; 836 837 template <class _Container> 838 inline _LIBCPP_INLINE_VISIBILITY 839 front_insert_iterator<_Container> 840 front_inserter(_Container& __x) 841 { 842 return front_insert_iterator<_Container>(__x); 843 } 844 845 template <class _Container> 846 class _LIBCPP_TEMPLATE_VIS insert_iterator 847 : public iterator<output_iterator_tag, 848 void, 849 void, 850 void, 851 void> 852 { 853 protected: 854 _Container* container; 855 typename _Container::iterator iter; 856 public: 857 typedef _Container container_type; 858 859 _LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i) 860 : container(_VSTD::addressof(__x)), iter(__i) {} 861 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_) 862 {iter = container->insert(iter, __value_); ++iter; return *this;} 863 #ifndef _LIBCPP_CXX03_LANG 864 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_) 865 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;} 866 #endif // _LIBCPP_CXX03_LANG 867 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;} 868 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;} 869 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;} 870 }; 871 872 template <class _Container> 873 inline _LIBCPP_INLINE_VISIBILITY 874 insert_iterator<_Container> 875 inserter(_Container& __x, typename _Container::iterator __i) 876 { 877 return insert_iterator<_Container>(__x, __i); 878 } 879 880 template <class _Tp, class _CharT = char, 881 class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t> 882 class _LIBCPP_TEMPLATE_VIS istream_iterator 883 : public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&> 884 { 885 public: 886 typedef _CharT char_type; 887 typedef _Traits traits_type; 888 typedef basic_istream<_CharT,_Traits> istream_type; 889 private: 890 istream_type* __in_stream_; 891 _Tp __value_; 892 public: 893 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(0), __value_() {} 894 _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(_VSTD::addressof(__s)) 895 { 896 if (!(*__in_stream_ >> __value_)) 897 __in_stream_ = 0; 898 } 899 900 _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;} 901 _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return _VSTD::addressof((operator*()));} 902 _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++() 903 { 904 if (!(*__in_stream_ >> __value_)) 905 __in_stream_ = 0; 906 return *this; 907 } 908 _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int) 909 {istream_iterator __t(*this); ++(*this); return __t;} 910 911 friend _LIBCPP_INLINE_VISIBILITY 912 bool operator==(const istream_iterator& __x, const istream_iterator& __y) 913 {return __x.__in_stream_ == __y.__in_stream_;} 914 915 friend _LIBCPP_INLINE_VISIBILITY 916 bool operator!=(const istream_iterator& __x, const istream_iterator& __y) 917 {return !(__x == __y);} 918 }; 919 920 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> > 921 class _LIBCPP_TEMPLATE_VIS ostream_iterator 922 : public iterator<output_iterator_tag, void, void, void, void> 923 { 924 public: 925 typedef _CharT char_type; 926 typedef _Traits traits_type; 927 typedef basic_ostream<_CharT,_Traits> ostream_type; 928 private: 929 ostream_type* __out_stream_; 930 const char_type* __delim_; 931 public: 932 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT 933 : __out_stream_(_VSTD::addressof(__s)), __delim_(0) {} 934 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT 935 : __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {} 936 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_) 937 { 938 *__out_stream_ << __value_; 939 if (__delim_) 940 *__out_stream_ << __delim_; 941 return *this; 942 } 943 944 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;} 945 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;} 946 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;} 947 }; 948 949 template<class _CharT, class _Traits> 950 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator 951 : public iterator<input_iterator_tag, _CharT, 952 typename _Traits::off_type, _CharT*, 953 _CharT> 954 { 955 public: 956 typedef _CharT char_type; 957 typedef _Traits traits_type; 958 typedef typename _Traits::int_type int_type; 959 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 960 typedef basic_istream<_CharT,_Traits> istream_type; 961 private: 962 mutable streambuf_type* __sbuf_; 963 964 class __proxy 965 { 966 char_type __keep_; 967 streambuf_type* __sbuf_; 968 _LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s) 969 : __keep_(__c), __sbuf_(__s) {} 970 friend class istreambuf_iterator; 971 public: 972 _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;} 973 }; 974 975 _LIBCPP_INLINE_VISIBILITY 976 bool __test_for_eof() const 977 { 978 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof())) 979 __sbuf_ = 0; 980 return __sbuf_ == 0; 981 } 982 public: 983 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(0) {} 984 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT 985 : __sbuf_(__s.rdbuf()) {} 986 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT 987 : __sbuf_(__s) {} 988 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT 989 : __sbuf_(__p.__sbuf_) {} 990 991 _LIBCPP_INLINE_VISIBILITY char_type operator*() const 992 {return static_cast<char_type>(__sbuf_->sgetc());} 993 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++() 994 { 995 __sbuf_->sbumpc(); 996 return *this; 997 } 998 _LIBCPP_INLINE_VISIBILITY __proxy operator++(int) 999 { 1000 return __proxy(__sbuf_->sbumpc(), __sbuf_); 1001 } 1002 1003 _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const 1004 {return __test_for_eof() == __b.__test_for_eof();} 1005 }; 1006 1007 template <class _CharT, class _Traits> 1008 inline _LIBCPP_INLINE_VISIBILITY 1009 bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a, 1010 const istreambuf_iterator<_CharT,_Traits>& __b) 1011 {return __a.equal(__b);} 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 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator 1021 : public iterator<output_iterator_tag, void, void, void, void> 1022 { 1023 public: 1024 typedef _CharT char_type; 1025 typedef _Traits traits_type; 1026 typedef basic_streambuf<_CharT,_Traits> streambuf_type; 1027 typedef basic_ostream<_CharT,_Traits> ostream_type; 1028 private: 1029 streambuf_type* __sbuf_; 1030 public: 1031 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT 1032 : __sbuf_(__s.rdbuf()) {} 1033 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT 1034 : __sbuf_(__s) {} 1035 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c) 1036 { 1037 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof())) 1038 __sbuf_ = 0; 1039 return *this; 1040 } 1041 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;} 1042 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;} 1043 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;} 1044 _LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == 0;} 1045 1046 #if !defined(__APPLE__) || \ 1047 (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_8) || \ 1048 (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0) 1049 1050 template <class _Ch, class _Tr> 1051 friend 1052 _LIBCPP_HIDDEN 1053 ostreambuf_iterator<_Ch, _Tr> 1054 __pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s, 1055 const _Ch* __ob, const _Ch* __op, const _Ch* __oe, 1056 ios_base& __iob, _Ch __fl); 1057 #endif 1058 }; 1059 1060 template <class _Iter> 1061 class _LIBCPP_TEMPLATE_VIS move_iterator 1062 { 1063 private: 1064 _Iter __i; 1065 public: 1066 typedef _Iter iterator_type; 1067 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1068 typedef typename iterator_traits<iterator_type>::value_type value_type; 1069 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1070 typedef iterator_type pointer; 1071 #ifndef _LIBCPP_CXX03_LANG 1072 typedef typename iterator_traits<iterator_type>::reference __reference; 1073 typedef typename conditional< 1074 is_reference<__reference>::value, 1075 typename remove_reference<__reference>::type&&, 1076 __reference 1077 >::type reference; 1078 #else 1079 typedef typename iterator_traits<iterator_type>::reference reference; 1080 #endif 1081 1082 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1083 move_iterator() : __i() {} 1084 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1085 explicit move_iterator(_Iter __x) : __i(__x) {} 1086 template <class _Up> 1087 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1088 move_iterator(const move_iterator<_Up>& __u) : __i(__u.base()) {} 1089 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 _Iter base() const {return __i;} 1090 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1091 reference operator*() const { return static_cast<reference>(*__i); } 1092 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1093 pointer operator->() const { return __i;} 1094 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1095 move_iterator& operator++() {++__i; return *this;} 1096 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1097 move_iterator operator++(int) {move_iterator __tmp(*this); ++__i; return __tmp;} 1098 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1099 move_iterator& operator--() {--__i; return *this;} 1100 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1101 move_iterator operator--(int) {move_iterator __tmp(*this); --__i; return __tmp;} 1102 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1103 move_iterator operator+ (difference_type __n) const {return move_iterator(__i + __n);} 1104 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1105 move_iterator& operator+=(difference_type __n) {__i += __n; return *this;} 1106 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1107 move_iterator operator- (difference_type __n) const {return move_iterator(__i - __n);} 1108 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1109 move_iterator& operator-=(difference_type __n) {__i -= __n; return *this;} 1110 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1111 reference operator[](difference_type __n) const { return static_cast<reference>(__i[__n]); } 1112 }; 1113 1114 template <class _Iter1, class _Iter2> 1115 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1116 bool 1117 operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1118 { 1119 return __x.base() == __y.base(); 1120 } 1121 1122 template <class _Iter1, class _Iter2> 1123 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1124 bool 1125 operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1126 { 1127 return __x.base() < __y.base(); 1128 } 1129 1130 template <class _Iter1, class _Iter2> 1131 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1132 bool 1133 operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1134 { 1135 return __x.base() != __y.base(); 1136 } 1137 1138 template <class _Iter1, class _Iter2> 1139 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1140 bool 1141 operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1142 { 1143 return __x.base() > __y.base(); 1144 } 1145 1146 template <class _Iter1, class _Iter2> 1147 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1148 bool 1149 operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1150 { 1151 return __x.base() >= __y.base(); 1152 } 1153 1154 template <class _Iter1, class _Iter2> 1155 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1156 bool 1157 operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1158 { 1159 return __x.base() <= __y.base(); 1160 } 1161 1162 #ifndef _LIBCPP_CXX03_LANG 1163 template <class _Iter1, class _Iter2> 1164 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1165 auto 1166 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1167 -> decltype(__x.base() - __y.base()) 1168 { 1169 return __x.base() - __y.base(); 1170 } 1171 #else 1172 template <class _Iter1, class _Iter2> 1173 inline _LIBCPP_INLINE_VISIBILITY 1174 typename move_iterator<_Iter1>::difference_type 1175 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y) 1176 { 1177 return __x.base() - __y.base(); 1178 } 1179 #endif 1180 1181 template <class _Iter> 1182 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1183 move_iterator<_Iter> 1184 operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x) 1185 { 1186 return move_iterator<_Iter>(__x.base() + __n); 1187 } 1188 1189 template <class _Iter> 1190 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1191 move_iterator<_Iter> 1192 make_move_iterator(_Iter __i) 1193 { 1194 return move_iterator<_Iter>(__i); 1195 } 1196 1197 // __wrap_iter 1198 1199 template <class _Iter> class __wrap_iter; 1200 1201 template <class _Iter1, class _Iter2> 1202 _LIBCPP_INLINE_VISIBILITY 1203 bool 1204 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1205 1206 template <class _Iter1, class _Iter2> 1207 _LIBCPP_INLINE_VISIBILITY 1208 bool 1209 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1210 1211 template <class _Iter1, class _Iter2> 1212 _LIBCPP_INLINE_VISIBILITY 1213 bool 1214 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1215 1216 template <class _Iter1, class _Iter2> 1217 _LIBCPP_INLINE_VISIBILITY 1218 bool 1219 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1220 1221 template <class _Iter1, class _Iter2> 1222 _LIBCPP_INLINE_VISIBILITY 1223 bool 1224 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1225 1226 template <class _Iter1, class _Iter2> 1227 _LIBCPP_INLINE_VISIBILITY 1228 bool 1229 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1230 1231 #ifndef _LIBCPP_CXX03_LANG 1232 template <class _Iter1, class _Iter2> 1233 _LIBCPP_INLINE_VISIBILITY 1234 auto 1235 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1236 -> decltype(__x.base() - __y.base()); 1237 #else 1238 template <class _Iter1, class _Iter2> 1239 _LIBCPP_INLINE_VISIBILITY 1240 typename __wrap_iter<_Iter1>::difference_type 1241 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1242 #endif 1243 1244 template <class _Iter> 1245 _LIBCPP_INLINE_VISIBILITY 1246 __wrap_iter<_Iter> 1247 operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT_DEBUG; 1248 1249 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY copy(_Ip, _Ip, _Op); 1250 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY copy_backward(_B1, _B1, _B2); 1251 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY move(_Ip, _Ip, _Op); 1252 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY move_backward(_B1, _B1, _B2); 1253 1254 #if _LIBCPP_DEBUG_LEVEL < 2 1255 1256 template <class _Tp> 1257 _LIBCPP_INLINE_VISIBILITY 1258 typename enable_if 1259 < 1260 is_trivially_copy_assignable<_Tp>::value, 1261 _Tp* 1262 >::type 1263 __unwrap_iter(__wrap_iter<_Tp*>); 1264 1265 #else 1266 1267 template <class _Tp> 1268 inline _LIBCPP_INLINE_VISIBILITY 1269 typename enable_if 1270 < 1271 is_trivially_copy_assignable<_Tp>::value, 1272 __wrap_iter<_Tp*> 1273 >::type 1274 __unwrap_iter(__wrap_iter<_Tp*> __i); 1275 1276 #endif 1277 1278 template <class _Iter> 1279 class __wrap_iter 1280 { 1281 public: 1282 typedef _Iter iterator_type; 1283 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category; 1284 typedef typename iterator_traits<iterator_type>::value_type value_type; 1285 typedef typename iterator_traits<iterator_type>::difference_type difference_type; 1286 typedef typename iterator_traits<iterator_type>::pointer pointer; 1287 typedef typename iterator_traits<iterator_type>::reference reference; 1288 private: 1289 iterator_type __i; 1290 public: 1291 _LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT_DEBUG 1292 #if _LIBCPP_STD_VER > 11 1293 : __i{} 1294 #endif 1295 { 1296 #if _LIBCPP_DEBUG_LEVEL >= 2 1297 __get_db()->__insert_i(this); 1298 #endif 1299 } 1300 template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u, 1301 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT_DEBUG 1302 : __i(__u.base()) 1303 { 1304 #if _LIBCPP_DEBUG_LEVEL >= 2 1305 __get_db()->__iterator_copy(this, &__u); 1306 #endif 1307 } 1308 #if _LIBCPP_DEBUG_LEVEL >= 2 1309 _LIBCPP_INLINE_VISIBILITY 1310 __wrap_iter(const __wrap_iter& __x) 1311 : __i(__x.base()) 1312 { 1313 __get_db()->__iterator_copy(this, &__x); 1314 } 1315 _LIBCPP_INLINE_VISIBILITY 1316 __wrap_iter& operator=(const __wrap_iter& __x) 1317 { 1318 if (this != &__x) 1319 { 1320 __get_db()->__iterator_copy(this, &__x); 1321 __i = __x.__i; 1322 } 1323 return *this; 1324 } 1325 _LIBCPP_INLINE_VISIBILITY 1326 ~__wrap_iter() 1327 { 1328 __get_db()->__erase_i(this); 1329 } 1330 #endif 1331 _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT_DEBUG 1332 { 1333 #if _LIBCPP_DEBUG_LEVEL >= 2 1334 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1335 "Attempted to dereference a non-dereferenceable iterator"); 1336 #endif 1337 return *__i; 1338 } 1339 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT_DEBUG 1340 { 1341 #if _LIBCPP_DEBUG_LEVEL >= 2 1342 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1343 "Attempted to dereference a non-dereferenceable iterator"); 1344 #endif 1345 return (pointer)_VSTD::addressof(*__i); 1346 } 1347 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT_DEBUG 1348 { 1349 #if _LIBCPP_DEBUG_LEVEL >= 2 1350 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this), 1351 "Attempted to increment non-incrementable iterator"); 1352 #endif 1353 ++__i; 1354 return *this; 1355 } 1356 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT_DEBUG 1357 {__wrap_iter __tmp(*this); ++(*this); return __tmp;} 1358 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT_DEBUG 1359 { 1360 #if _LIBCPP_DEBUG_LEVEL >= 2 1361 _LIBCPP_ASSERT(__get_const_db()->__decrementable(this), 1362 "Attempted to decrement non-decrementable iterator"); 1363 #endif 1364 --__i; 1365 return *this; 1366 } 1367 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT_DEBUG 1368 {__wrap_iter __tmp(*this); --(*this); return __tmp;} 1369 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT_DEBUG 1370 {__wrap_iter __w(*this); __w += __n; return __w;} 1371 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT_DEBUG 1372 { 1373 #if _LIBCPP_DEBUG_LEVEL >= 2 1374 _LIBCPP_ASSERT(__get_const_db()->__addable(this, __n), 1375 "Attempted to add/subtract iterator outside of valid range"); 1376 #endif 1377 __i += __n; 1378 return *this; 1379 } 1380 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT_DEBUG 1381 {return *this + (-__n);} 1382 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT_DEBUG 1383 {*this += -__n; return *this;} 1384 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT_DEBUG 1385 { 1386 #if _LIBCPP_DEBUG_LEVEL >= 2 1387 _LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n), 1388 "Attempted to subscript iterator outside of valid range"); 1389 #endif 1390 return __i[__n]; 1391 } 1392 1393 _LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT_DEBUG {return __i;} 1394 1395 private: 1396 #if _LIBCPP_DEBUG_LEVEL >= 2 1397 _LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x) 1398 { 1399 __get_db()->__insert_ic(this, __p); 1400 } 1401 #else 1402 _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT_DEBUG : __i(__x) {} 1403 #endif 1404 1405 template <class _Up> friend class __wrap_iter; 1406 template <class _CharT, class _Traits, class _Alloc> friend class basic_string; 1407 template <class _Tp, class _Alloc> friend class _LIBCPP_TEMPLATE_VIS vector; 1408 1409 template <class _Iter1, class _Iter2> 1410 friend 1411 bool 1412 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1413 1414 template <class _Iter1, class _Iter2> 1415 friend 1416 bool 1417 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1418 1419 template <class _Iter1, class _Iter2> 1420 friend 1421 bool 1422 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1423 1424 template <class _Iter1, class _Iter2> 1425 friend 1426 bool 1427 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1428 1429 template <class _Iter1, class _Iter2> 1430 friend 1431 bool 1432 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1433 1434 template <class _Iter1, class _Iter2> 1435 friend 1436 bool 1437 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1438 1439 #ifndef _LIBCPP_CXX03_LANG 1440 template <class _Iter1, class _Iter2> 1441 friend 1442 auto 1443 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1444 -> decltype(__x.base() - __y.base()); 1445 #else 1446 template <class _Iter1, class _Iter2> 1447 friend 1448 typename __wrap_iter<_Iter1>::difference_type 1449 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG; 1450 #endif 1451 1452 template <class _Iter1> 1453 friend 1454 __wrap_iter<_Iter1> 1455 operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT_DEBUG; 1456 1457 template <class _Ip, class _Op> friend _Op copy(_Ip, _Ip, _Op); 1458 template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2); 1459 template <class _Ip, class _Op> friend _Op move(_Ip, _Ip, _Op); 1460 template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2); 1461 1462 #if _LIBCPP_DEBUG_LEVEL < 2 1463 template <class _Tp> 1464 friend 1465 typename enable_if 1466 < 1467 is_trivially_copy_assignable<_Tp>::value, 1468 _Tp* 1469 >::type 1470 __unwrap_iter(__wrap_iter<_Tp*>); 1471 #else 1472 template <class _Tp> 1473 inline _LIBCPP_INLINE_VISIBILITY 1474 typename enable_if 1475 < 1476 is_trivially_copy_assignable<_Tp>::value, 1477 __wrap_iter<_Tp*> 1478 >::type 1479 __unwrap_iter(__wrap_iter<_Tp*> __i); 1480 #endif 1481 }; 1482 1483 template <class _Iter1, class _Iter2> 1484 inline _LIBCPP_INLINE_VISIBILITY 1485 bool 1486 operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1487 { 1488 return __x.base() == __y.base(); 1489 } 1490 1491 template <class _Iter1, class _Iter2> 1492 inline _LIBCPP_INLINE_VISIBILITY 1493 bool 1494 operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1495 { 1496 #if _LIBCPP_DEBUG_LEVEL >= 2 1497 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1498 "Attempted to compare incomparable iterators"); 1499 #endif 1500 return __x.base() < __y.base(); 1501 } 1502 1503 template <class _Iter1, class _Iter2> 1504 inline _LIBCPP_INLINE_VISIBILITY 1505 bool 1506 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1507 { 1508 return !(__x == __y); 1509 } 1510 1511 template <class _Iter1, class _Iter2> 1512 inline _LIBCPP_INLINE_VISIBILITY 1513 bool 1514 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1515 { 1516 return __y < __x; 1517 } 1518 1519 template <class _Iter1, class _Iter2> 1520 inline _LIBCPP_INLINE_VISIBILITY 1521 bool 1522 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1523 { 1524 return !(__x < __y); 1525 } 1526 1527 template <class _Iter1, class _Iter2> 1528 inline _LIBCPP_INLINE_VISIBILITY 1529 bool 1530 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1531 { 1532 return !(__y < __x); 1533 } 1534 1535 template <class _Iter1> 1536 inline _LIBCPP_INLINE_VISIBILITY 1537 bool 1538 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1539 { 1540 return !(__x == __y); 1541 } 1542 1543 template <class _Iter1> 1544 inline _LIBCPP_INLINE_VISIBILITY 1545 bool 1546 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1547 { 1548 return __y < __x; 1549 } 1550 1551 template <class _Iter1> 1552 inline _LIBCPP_INLINE_VISIBILITY 1553 bool 1554 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1555 { 1556 return !(__x < __y); 1557 } 1558 1559 template <class _Iter1> 1560 inline _LIBCPP_INLINE_VISIBILITY 1561 bool 1562 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG 1563 { 1564 return !(__y < __x); 1565 } 1566 1567 #ifndef _LIBCPP_CXX03_LANG 1568 template <class _Iter1, class _Iter2> 1569 inline _LIBCPP_INLINE_VISIBILITY 1570 auto 1571 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1572 -> decltype(__x.base() - __y.base()) 1573 { 1574 #if _LIBCPP_DEBUG_LEVEL >= 2 1575 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1576 "Attempted to subtract incompatible iterators"); 1577 #endif 1578 return __x.base() - __y.base(); 1579 } 1580 #else 1581 template <class _Iter1, class _Iter2> 1582 inline _LIBCPP_INLINE_VISIBILITY 1583 typename __wrap_iter<_Iter1>::difference_type 1584 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG 1585 { 1586 #if _LIBCPP_DEBUG_LEVEL >= 2 1587 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y), 1588 "Attempted to subtract incompatible iterators"); 1589 #endif 1590 return __x.base() - __y.base(); 1591 } 1592 #endif 1593 1594 template <class _Iter> 1595 inline _LIBCPP_INLINE_VISIBILITY 1596 __wrap_iter<_Iter> 1597 operator+(typename __wrap_iter<_Iter>::difference_type __n, 1598 __wrap_iter<_Iter> __x) _NOEXCEPT_DEBUG 1599 { 1600 __x += __n; 1601 return __x; 1602 } 1603 1604 template <class _Iter> 1605 struct __libcpp_is_trivial_iterator 1606 : public _LIBCPP_BOOL_CONSTANT(is_pointer<_Iter>::value) {}; 1607 1608 template <class _Iter> 1609 struct __libcpp_is_trivial_iterator<move_iterator<_Iter> > 1610 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1611 1612 template <class _Iter> 1613 struct __libcpp_is_trivial_iterator<reverse_iterator<_Iter> > 1614 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1615 1616 template <class _Iter> 1617 struct __libcpp_is_trivial_iterator<__wrap_iter<_Iter> > 1618 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {}; 1619 1620 1621 template <class _Tp, size_t _Np> 1622 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1623 _Tp* 1624 begin(_Tp (&__array)[_Np]) 1625 { 1626 return __array; 1627 } 1628 1629 template <class _Tp, size_t _Np> 1630 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1631 _Tp* 1632 end(_Tp (&__array)[_Np]) 1633 { 1634 return __array + _Np; 1635 } 1636 1637 #if !defined(_LIBCPP_CXX03_LANG) 1638 1639 template <class _Cp> 1640 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1641 auto 1642 begin(_Cp& __c) -> decltype(__c.begin()) 1643 { 1644 return __c.begin(); 1645 } 1646 1647 template <class _Cp> 1648 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1649 auto 1650 begin(const _Cp& __c) -> decltype(__c.begin()) 1651 { 1652 return __c.begin(); 1653 } 1654 1655 template <class _Cp> 1656 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1657 auto 1658 end(_Cp& __c) -> decltype(__c.end()) 1659 { 1660 return __c.end(); 1661 } 1662 1663 template <class _Cp> 1664 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1665 auto 1666 end(const _Cp& __c) -> decltype(__c.end()) 1667 { 1668 return __c.end(); 1669 } 1670 1671 #if _LIBCPP_STD_VER > 11 1672 1673 template <class _Tp, size_t _Np> 1674 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1675 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np]) 1676 { 1677 return reverse_iterator<_Tp*>(__array + _Np); 1678 } 1679 1680 template <class _Tp, size_t _Np> 1681 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1682 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np]) 1683 { 1684 return reverse_iterator<_Tp*>(__array); 1685 } 1686 1687 template <class _Ep> 1688 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1689 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il) 1690 { 1691 return reverse_iterator<const _Ep*>(__il.end()); 1692 } 1693 1694 template <class _Ep> 1695 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1696 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il) 1697 { 1698 return reverse_iterator<const _Ep*>(__il.begin()); 1699 } 1700 1701 template <class _Cp> 1702 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1703 auto cbegin(const _Cp& __c) -> decltype(_VSTD::begin(__c)) 1704 { 1705 return _VSTD::begin(__c); 1706 } 1707 1708 template <class _Cp> 1709 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 1710 auto cend(const _Cp& __c) -> decltype(_VSTD::end(__c)) 1711 { 1712 return _VSTD::end(__c); 1713 } 1714 1715 template <class _Cp> 1716 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1717 auto rbegin(_Cp& __c) -> decltype(__c.rbegin()) 1718 { 1719 return __c.rbegin(); 1720 } 1721 1722 template <class _Cp> 1723 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1724 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin()) 1725 { 1726 return __c.rbegin(); 1727 } 1728 1729 template <class _Cp> 1730 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1731 auto rend(_Cp& __c) -> decltype(__c.rend()) 1732 { 1733 return __c.rend(); 1734 } 1735 1736 template <class _Cp> 1737 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1738 auto rend(const _Cp& __c) -> decltype(__c.rend()) 1739 { 1740 return __c.rend(); 1741 } 1742 1743 template <class _Cp> 1744 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1745 auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c)) 1746 { 1747 return _VSTD::rbegin(__c); 1748 } 1749 1750 template <class _Cp> 1751 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 1752 auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c)) 1753 { 1754 return _VSTD::rend(__c); 1755 } 1756 1757 #endif 1758 1759 1760 #else // defined(_LIBCPP_CXX03_LANG) 1761 1762 template <class _Cp> 1763 inline _LIBCPP_INLINE_VISIBILITY 1764 typename _Cp::iterator 1765 begin(_Cp& __c) 1766 { 1767 return __c.begin(); 1768 } 1769 1770 template <class _Cp> 1771 inline _LIBCPP_INLINE_VISIBILITY 1772 typename _Cp::const_iterator 1773 begin(const _Cp& __c) 1774 { 1775 return __c.begin(); 1776 } 1777 1778 template <class _Cp> 1779 inline _LIBCPP_INLINE_VISIBILITY 1780 typename _Cp::iterator 1781 end(_Cp& __c) 1782 { 1783 return __c.end(); 1784 } 1785 1786 template <class _Cp> 1787 inline _LIBCPP_INLINE_VISIBILITY 1788 typename _Cp::const_iterator 1789 end(const _Cp& __c) 1790 { 1791 return __c.end(); 1792 } 1793 1794 #endif // !defined(_LIBCPP_CXX03_LANG) 1795 1796 #if _LIBCPP_STD_VER > 14 1797 template <class _Cont> 1798 constexpr auto size(const _Cont& __c) -> decltype(__c.size()) { return __c.size(); } 1799 1800 template <class _Tp, size_t _Sz> 1801 constexpr size_t size(const _Tp (&)[_Sz]) noexcept { return _Sz; } 1802 1803 template <class _Cont> 1804 constexpr auto empty(const _Cont& __c) -> decltype(__c.empty()) { return __c.empty(); } 1805 1806 template <class _Tp, size_t _Sz> 1807 constexpr bool empty(const _Tp (&)[_Sz]) noexcept { return false; } 1808 1809 template <class _Ep> 1810 constexpr bool empty(initializer_list<_Ep> __il) noexcept { return __il.size() == 0; } 1811 1812 template <class _Cont> constexpr 1813 auto data(_Cont& __c) -> decltype(__c.data()) { return __c.data(); } 1814 1815 template <class _Cont> constexpr 1816 auto data(const _Cont& __c) -> decltype(__c.data()) { return __c.data(); } 1817 1818 template <class _Tp, size_t _Sz> 1819 constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; } 1820 1821 template <class _Ep> 1822 constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); } 1823 #endif 1824 1825 1826 _LIBCPP_END_NAMESPACE_STD 1827 1828 #endif // _LIBCPP_ITERATOR 1829
