Warning, /include/c++/v1/__cxx03/iterator is written in an unsupported language. File is not indexed.
0001 // -*- C++ -*-
0002 //===----------------------------------------------------------------------===//
0003 //
0004 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0005 // See https://llvm.org/LICENSE.txt for license information.
0006 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0007 //
0008 //===----------------------------------------------------------------------===//
0009
0010 #ifndef _LIBCPP___CXX03_ITERATOR
0011 #define _LIBCPP___CXX03_ITERATOR
0012
0013 /*
0014 iterator synopsis
0015
0016 #include <__cxx03/concepts>
0017
0018 namespace std
0019 {
0020 template<class> struct incrementable_traits; // since C++20
0021 template<class T>
0022 using iter_difference_t = see below; // since C++20
0023
0024 template<class> struct indirectly_readable_traits; // since C++20
0025 template<class T>
0026 using iter_value_t = see below; // since C++20
0027
0028 template<class Iterator>
0029 struct iterator_traits;
0030
0031 template<class T>
0032 requires is_object_v<T> // since C++20
0033 struct iterator_traits<T*>;
0034
0035 template<dereferenceable T>
0036 using iter_reference_t = decltype(*declval<T&>());
0037
0038 namespace ranges::inline unspecified {
0039 inline constexpr unspecified iter_move = unspecified; // since C++20, nodiscard as an extension
0040 }}
0041
0042 template<dereferenceable T>
0043 requires ...
0044 using iter_rvalue_reference_t = decltype(ranges::iter_move(declval<T&>())); // since C++20
0045
0046 // [iterator.concepts], iterator concepts
0047 // [iterator.concept.readable], concept indirectly_readable
0048 template<class In>
0049 concept indirectly_readable = see below; // since C++20
0050
0051 template<indirectly_readable T>
0052 using iter_common_reference_t =
0053 common_reference_t<iter_reference_t<T>, iter_value_t<T>&>; // since C++20
0054
0055 // [iterator.concept.writable], concept indirectly_writable
0056 template<class Out, class T>
0057 concept indirectly_writable = see below; // since C++20
0058
0059 // [iterator.concept.winc], concept weakly_incrementable
0060 template<class I>
0061 concept weakly_incrementable = see below; // since C++20
0062
0063 // [iterator.concept.inc], concept incrementable
0064 template<class I>
0065 concept incrementable = see below; // since C++20
0066
0067 // [iterator.concept.iterator], concept input_or_output_iterator
0068 template<class I>
0069 concept input_or_output_iterator = see below; // since C++20
0070
0071 // [iterator.concept.sentinel], concept sentinel_for
0072 template<class S, class I>
0073 concept sentinel_for = see below; // since C++20
0074
0075 // [iterator.concept.sizedsentinel], concept sized_sentinel_for
0076 template<class S, class I>
0077 inline constexpr bool disable_sized_sentinel_for = false;
0078
0079 template<class S, class I>
0080 concept sized_sentinel_for = see below;
0081
0082 // [iterator.concept.input], concept input_iterator
0083 template<class I>
0084 concept input_iterator = see below; // since C++20
0085
0086 // [iterator.concept.output], concept output_iterator
0087 template<class I, class T>
0088 concept output_iterator = see below; // since C++20
0089
0090 // [iterator.concept.forward], concept forward_iterator
0091 template<class I>
0092 concept forward_iterator = see below; // since C++20
0093
0094 // [iterator.concept.bidir], concept bidirectional_iterator
0095 template<class I>
0096 concept bidirectional_iterator = see below; // since C++20
0097
0098 // [iterator.concept.random.access], concept random_access_iterator
0099 template<class I>
0100 concept random_access_iterator = see below; // since C++20
0101
0102 // [indirectcallable]
0103 // [indirectcallable.indirectinvocable]
0104 template<class F, class I>
0105 concept indirectly_unary_invocable = see below; // since C++20
0106
0107 template<class F, class I>
0108 concept indirectly_regular_unary_invocable = see below; // since C++20
0109
0110 template<class F, class I>
0111 concept indirect_unary_predicate = see below; // since C++20
0112
0113 template<class F, class I1, class I2>
0114 concept indirect_binary_predicate = see below; // since C++20
0115
0116 template<class F, class I1, class I2 = I1>
0117 concept indirect_equivalence_relation = see below; // since C++20
0118
0119 template<class F, class I1, class I2 = I1>
0120 concept indirect_strict_weak_order = see below; // since C++20
0121
0122 template<class F, class... Is>
0123 using indirect_result_t = see below; // since C++20
0124
0125 // [projected], projected
0126 template<indirectly_readable I, indirectly_regular_unary_invocable<I> Proj>
0127 struct projected; // since C++20
0128
0129 template<weakly_incrementable I, indirectly_regular_unary_invocable<I> Proj>
0130 struct incrementable_traits<projected<I, Proj>>; // since C++20
0131
0132 // [alg.req.ind.move], concept indirectly_movable
0133 template<class In, class Out>
0134 concept indirectly_movable = see below; // since C++20
0135
0136 template<class In, class Out>
0137 concept indirectly_movable_storable = see below; // since C++20
0138
0139 // [alg.req.ind.copy], concept indirectly_copyable
0140 template<class In, class Out>
0141 concept indirectly_copyable = see below; // since C++20
0142
0143 template<class In, class Out>
0144 concept indirectly_copyable_storable = see below; // since C++20
0145
0146 // [alg.req.ind.swap], concept indirectly_swappable
0147 template<class I1, class I2 = I1>
0148 concept indirectly_swappable = see below; // since C++20
0149
0150 template<class I1, class I2, class R, class P1 = identity,
0151 class P2 = identity>
0152 concept indirectly_comparable =
0153 indirect_binary_predicate<R, projected<I1, P1>, projected<I2, P2>>; // since C++20
0154
0155 // [alg.req.permutable], concept permutable
0156 template<class I>
0157 concept permutable = see below; // since C++20
0158
0159 // [alg.req.mergeable], concept mergeable
0160 template<class I1, class I2, class Out,
0161 class R = ranges::less, class P1 = identity, class P2 = identity>
0162 concept mergeable = see below; // since C++20
0163
0164 // [alg.req.sortable], concept sortable
0165 template<class I, class R = ranges::less, class P = identity>
0166 concept sortable = see below; // since C++20
0167
0168 template<input_or_output_iterator I, sentinel_for<I> S>
0169 requires (!same_as<I, S> && copyable<I>)
0170 class common_iterator; // since C++20
0171
0172 template<class Category, class T, class Distance = ptrdiff_t,
0173 class Pointer = T*, class Reference = T&>
0174 struct iterator // deprecated in C++17
0175 {
0176 typedef T value_type;
0177 typedef Distance difference_type;
0178 typedef Pointer pointer;
0179 typedef Reference reference;
0180 typedef Category iterator_category;
0181 };
0182
0183 struct input_iterator_tag {};
0184 struct output_iterator_tag {};
0185 struct forward_iterator_tag : public input_iterator_tag {};
0186 struct bidirectional_iterator_tag : public forward_iterator_tag {};
0187 struct random_access_iterator_tag : public bidirectional_iterator_tag {};
0188 struct contiguous_iterator_tag : public random_access_iterator_tag {};
0189
0190 // 27.4.3, iterator operations
0191 template <class InputIterator, class Distance> // constexpr in C++17
0192 constexpr void advance(InputIterator& i, Distance n);
0193
0194 template <class InputIterator> // constexpr in C++17
0195 constexpr typename iterator_traits<InputIterator>::difference_type
0196 distance(InputIterator first, InputIterator last);
0197
0198 template <class InputIterator> // constexpr in C++17
0199 constexpr InputIterator next(InputIterator x,
0200 typename iterator_traits<InputIterator>::difference_type n = 1);
0201
0202 template <class BidirectionalIterator> // constexpr in C++17
0203 constexpr BidirectionalIterator prev(BidirectionalIterator x,
0204 typename iterator_traits<BidirectionalIterator>::difference_type n = 1);
0205
0206 // [range.iter.ops], range iterator operations
0207 namespace ranges {
0208 // [range.iter.op.advance], ranges::advance
0209 template<input_or_output_iterator I>
0210 constexpr void advance(I& i, iter_difference_t<I> n); // since C++20
0211 template<input_or_output_iterator I, sentinel_for<I> S>
0212 constexpr void advance(I& i, S bound); // since C++20
0213 template<input_or_output_iterator I, sentinel_for<I> S>
0214 constexpr iter_difference_t<I> advance(I& i, iter_difference_t<I> n, S bound); // since C++20
0215 }
0216
0217 template <class Iterator>
0218 class reverse_iterator
0219 : public iterator<typename iterator_traits<Iterator>::iterator_category, // until C++17
0220 typename iterator_traits<Iterator>::value_type,
0221 typename iterator_traits<Iterator>::difference_type,
0222 typename iterator_traits<Iterator>::pointer,
0223 typename iterator_traits<Iterator>::reference>
0224 {
0225 protected:
0226 Iterator current;
0227 public:
0228 using iterator_type = Iterator;
0229 using iterator_concept = see below; // since C++20
0230 using iterator_category = typename iterator_traits<Iterator>::iterator_category; // since C++17, until C++20
0231 using iterator_category = see below; // since C++20
0232 using value_type = typename iterator_traits<Iterator>::value_type; // since C++17, until C++20
0233 using value_type = iter_value_t<Iterator>; // since C++20
0234 using difference_type = typename iterator_traits<Iterator>::difference_type; // until C++20
0235 using difference_type = iter_difference_t<Iterator>; // since C++20
0236 using pointer = typename iterator_traits<Iterator>::pointer;
0237 using reference = typename iterator_traits<Iterator>::reference; // until C++20
0238 using reference = iter_reference_t<Iterator>; // since C++20
0239
0240 constexpr reverse_iterator();
0241 constexpr explicit reverse_iterator(Iterator x);
0242 template <class U> constexpr reverse_iterator(const reverse_iterator<U>& u);
0243 template <class U> constexpr reverse_iterator& operator=(const reverse_iterator<U>& u);
0244 constexpr Iterator base() const;
0245 constexpr reference operator*() const;
0246 constexpr pointer operator->() const; // until C++20
0247 constexpr pointer operator->() const requires see below; // since C++20
0248 constexpr reverse_iterator& operator++();
0249 constexpr reverse_iterator operator++(int);
0250 constexpr reverse_iterator& operator--();
0251 constexpr reverse_iterator operator--(int);
0252 constexpr reverse_iterator operator+ (difference_type n) const;
0253 constexpr reverse_iterator& operator+=(difference_type n);
0254 constexpr reverse_iterator operator- (difference_type n) const;
0255 constexpr reverse_iterator& operator-=(difference_type n);
0256 constexpr unspecified operator[](difference_type n) const;
0257
0258 friend constexpr iter_rvalue_reference_t<Iterator>
0259 iter_move(const reverse_iterator& i) noexcept(see below);
0260 template<indirectly_swappable<Iterator> Iterator2>
0261 friend constexpr void
0262 iter_swap(const reverse_iterator& x,
0263 const reverse_iterator<Iterator2>& y) noexcept(see below);
0264 };
0265
0266 template <class Iterator1, class Iterator2>
0267 constexpr bool // constexpr in C++17
0268 operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
0269
0270 template <class Iterator1, class Iterator2>
0271 constexpr bool // constexpr in C++17
0272 operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
0273
0274 template <class Iterator1, class Iterator2>
0275 constexpr bool // constexpr in C++17
0276 operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
0277
0278 template <class Iterator1, class Iterator2>
0279 constexpr bool // constexpr in C++17
0280 operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
0281
0282 template <class Iterator1, class Iterator2>
0283 constexpr bool // constexpr in C++17
0284 operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
0285
0286 template <class Iterator1, class Iterator2>
0287 constexpr bool // constexpr in C++17
0288 operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
0289
0290 template<class Iterator1, three_way_comparable_with<Iterator1> Iterator2>
0291 constexpr compare_three_way_result_t<Iterator1, Iterator2>
0292 operator<=>(const reverse_iterator<Iterator1>& x,
0293 const reverse_iterator<Iterator2>& y);
0294
0295 template <class Iterator1, class Iterator2>
0296 constexpr auto
0297 operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y)
0298 -> decltype(__y.base() - __x.base()); // constexpr in C++17
0299
0300 template <class Iterator>
0301 constexpr reverse_iterator<Iterator>
0302 operator+(typename reverse_iterator<Iterator>::difference_type n,
0303 const reverse_iterator<Iterator>& x); // constexpr in C++17
0304
0305 template <class Iterator>
0306 constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14, constexpr in C++17
0307
0308 template<class Iterator1, class Iterator2>
0309 requires (!sized_sentinel_for<Iterator1, Iterator2>)
0310 inline constexpr bool disable_sized_sentinel_for<reverse_iterator<Iterator1>,
0311 reverse_iterator<Iterator2>> = true;
0312
0313 template <class Container>
0314 class back_insert_iterator
0315 : public iterator<output_iterator_tag, void, void, void, void> // until C++17
0316 {
0317 protected:
0318 Container* container;
0319 public:
0320 typedef Container container_type;
0321 typedef void value_type;
0322 typedef void difference_type; // until C++20
0323 typedef ptrdiff_t difference_type; // since C++20
0324 typedef void reference;
0325 typedef void pointer;
0326
0327 explicit back_insert_iterator(Container& x); // constexpr in C++20
0328 back_insert_iterator& operator=(const typename Container::value_type& value); // constexpr in C++20
0329 back_insert_iterator& operator*(); // constexpr in C++20
0330 back_insert_iterator& operator++(); // constexpr in C++20
0331 back_insert_iterator operator++(int); // constexpr in C++20
0332 };
0333
0334 template <class Container> back_insert_iterator<Container> back_inserter(Container& x); // constexpr in C++20
0335
0336 template <class Container>
0337 class front_insert_iterator
0338 : public iterator<output_iterator_tag, void, void, void, void> // until C++17
0339 {
0340 protected:
0341 Container* container;
0342 public:
0343 typedef Container container_type;
0344 typedef void value_type;
0345 typedef void difference_type; // until C++20
0346 typedef ptrdiff_t difference_type; // since C++20
0347 typedef void reference;
0348 typedef void pointer;
0349
0350 explicit front_insert_iterator(Container& x); // constexpr in C++20
0351 front_insert_iterator& operator=(const typename Container::value_type& value); // constexpr in C++20
0352 front_insert_iterator& operator*(); // constexpr in C++20
0353 front_insert_iterator& operator++(); // constexpr in C++20
0354 front_insert_iterator operator++(int); // constexpr in C++20
0355 };
0356
0357 template <class Container> front_insert_iterator<Container> front_inserter(Container& x); // constexpr in C++20
0358
0359 template <class Container>
0360 class insert_iterator
0361 : public iterator<output_iterator_tag, void, void, void, void> // until C++17
0362 {
0363 protected:
0364 Container* container;
0365 typename Container::iterator iter;
0366 public:
0367 typedef Container container_type;
0368 typedef void value_type;
0369 typedef void difference_type; // until C++20
0370 typedef ptrdiff_t difference_type; // since C++20
0371 typedef void reference;
0372 typedef void pointer;
0373
0374 insert_iterator(Container& x, typename Container::iterator i); // constexpr in C++20
0375 insert_iterator& operator=(const typename Container::value_type& value); // constexpr in C++20
0376 insert_iterator& operator*(); // constexpr in C++20
0377 insert_iterator& operator++(); // constexpr in C++20
0378 insert_iterator& operator++(int); // constexpr in C++20
0379 };
0380
0381 template <class Container>
0382 insert_iterator<Container> inserter(Container& x, typename Container::iterator i); // until C++20
0383 template <class Container>
0384 constexpr insert_iterator<Container> inserter(Container& x, ranges::iterator_t<Container> i); // since C++20
0385
0386 template <class Iterator>
0387 class move_iterator {
0388 public:
0389 using iterator_type = Iterator;
0390 using iterator_concept = see below; // From C++20
0391 using iterator_category = see below; // not always present starting from C++20
0392 using value_type = iter_value_t<Iterator>; // Until C++20, iterator_traits<Iterator>::value_type
0393 using difference_type = iter_difference_t<Iterator>; // Until C++20, iterator_traits<Iterator>::difference_type;
0394 using pointer = Iterator;
0395 using reference = iter_rvalue_reference_t<Iterator>; // Until C++20, value_type&&
0396
0397 constexpr move_iterator(); // all the constexprs are in C++17
0398 constexpr explicit move_iterator(Iterator i);
0399 template <class U>
0400 constexpr move_iterator(const move_iterator<U>& u);
0401 template <class U>
0402 constexpr move_iterator& operator=(const move_iterator<U>& u);
0403
0404 constexpr iterator_type base() const; // Until C++20
0405 constexpr const Iterator& base() const & noexcept; // From C++20
0406 constexpr Iterator base() &&; // From C++20
0407
0408 constexpr reference operator*() const;
0409 constexpr pointer operator->() const; // Deprecated in C++20
0410 constexpr move_iterator& operator++();
0411 constexpr auto operator++(int); // Return type was move_iterator until C++20
0412 constexpr move_iterator& operator--();
0413 constexpr move_iterator operator--(int);
0414 constexpr move_iterator operator+(difference_type n) const;
0415 constexpr move_iterator& operator+=(difference_type n);
0416 constexpr move_iterator operator-(difference_type n) const;
0417 constexpr move_iterator& operator-=(difference_type n);
0418 constexpr reference operator[](difference_type n) const; // Return type unspecified until C++20
0419
0420 template<sentinel_for<Iterator> S>
0421 friend constexpr bool
0422 operator==(const move_iterator& x, const move_sentinel<S>& y); // Since C++20
0423 template<sized_sentinel_for<Iterator> S>
0424 friend constexpr iter_difference_t<Iterator>
0425 operator-(const move_sentinel<S>& x, const move_iterator& y); // Since C++20
0426 template<sized_sentinel_for<Iterator> S>
0427 friend constexpr iter_difference_t<Iterator>
0428 operator-(const move_iterator& x, const move_sentinel<S>& y); // Since C++20
0429 friend constexpr iter_rvalue_reference_t<Iterator>
0430 iter_move(const move_iterator& i)
0431 noexcept(noexcept(ranges::iter_move(i.current))); // Since C++20
0432 template<indirectly_swappable<Iterator> Iterator2>
0433 friend constexpr void
0434 iter_swap(const move_iterator& x, const move_iterator<Iterator2>& y)
0435 noexcept(noexcept(ranges::iter_swap(x.current, y.current))); // Since C++20
0436
0437 private:
0438 Iterator current; // exposition only
0439 };
0440
0441 template <class Iterator1, class Iterator2>
0442 constexpr bool // constexpr in C++17
0443 operator==(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
0444
0445 template <class Iterator1, class Iterator2>
0446 constexpr bool // constexpr in C++17
0447 operator!=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
0448
0449 template <class Iterator1, class Iterator2>
0450 constexpr bool // constexpr in C++17
0451 operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
0452
0453 template <class Iterator1, class Iterator2>
0454 constexpr bool // constexpr in C++17
0455 operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
0456
0457 template <class Iterator1, class Iterator2>
0458 constexpr bool // constexpr in C++17
0459 operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
0460
0461 template <class Iterator1, class Iterator2>
0462 constexpr bool // constexpr in C++17
0463 operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
0464
0465 template <class Iterator1, class Iterator2>
0466 constexpr auto // constexpr in C++17
0467 operator-(const move_iterator<Iterator1>& x,
0468 const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base());
0469
0470 template <class Iterator>
0471 constexpr move_iterator<Iterator> operator+( // constexpr in C++17
0472 typename move_iterator<Iterator>::difference_type n,
0473 const move_iterator<Iterator>& x);
0474
0475 template <class Iterator> // constexpr in C++17
0476 constexpr move_iterator<Iterator> make_move_iterator(const Iterator& i);
0477
0478 template<class Iterator1, class Iterator2>
0479 requires (!sized_sentinel_for<Iterator1, Iterator2>)
0480 inline constexpr bool disable_sized_sentinel_for<move_iterator<Iterator1>, // since C++20
0481 move_iterator<Iterator2>> = true;
0482
0483 template<semiregular S>
0484 class move_sentinel {
0485 public:
0486 constexpr move_sentinel();
0487 constexpr explicit move_sentinel(S s);
0488 template<class S2>
0489 requires convertible_to<const S2&, S>
0490 constexpr move_sentinel(const move_sentinel<S2>& s);
0491 template<class S2>
0492 requires assignable_from<S&, const S2&>
0493 constexpr move_sentinel& operator=(const move_sentinel<S2>& s);
0494
0495 constexpr S base() const;
0496 private:
0497 S last; // exposition only
0498 };
0499
0500 // [default.sentinel], default sentinel
0501 struct default_sentinel_t;
0502 inline constexpr default_sentinel_t default_sentinel{};
0503
0504 // [iterators.counted], counted iterators
0505 template<input_or_output_iterator I> class counted_iterator;
0506
0507 template<input_iterator I>
0508 requires see below
0509 struct iterator_traits<counted_iterator<I>>;
0510
0511 // [unreachable.sentinel], unreachable sentinel
0512 struct unreachable_sentinel_t;
0513 inline constexpr unreachable_sentinel_t unreachable_sentinel{};
0514
0515 template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t>
0516 class istream_iterator
0517 : public iterator<input_iterator_tag, T, Distance, const T*, const T&> // until C++17
0518 {
0519 public:
0520 typedef input_iterator_tag iterator_category;
0521 typedef T value_type;
0522 typedef Distance difference_type;
0523 typedef const T* pointer;
0524 typedef const T& reference;
0525
0526 typedef charT char_type;
0527 typedef traits traits_type;
0528 typedef basic_istream<charT, traits> istream_type;
0529
0530 istream_iterator(); // constexpr since C++11
0531 constexpr istream_iterator(default_sentinel_t); // since C++20
0532 istream_iterator(istream_type& s);
0533 istream_iterator(const istream_iterator& x);
0534 ~istream_iterator();
0535
0536 const T& operator*() const;
0537 const T* operator->() const;
0538 istream_iterator& operator++();
0539 istream_iterator operator++(int);
0540 friend bool operator==(const istream_iterator& i, default_sentinel_t); // since C++20
0541 };
0542
0543 template <class T, class charT, class traits, class Distance>
0544 bool operator==(const istream_iterator<T,charT,traits,Distance>& x,
0545 const istream_iterator<T,charT,traits,Distance>& y);
0546 template <class T, class charT, class traits, class Distance>
0547 bool operator!=(const istream_iterator<T,charT,traits,Distance>& x,
0548 const istream_iterator<T,charT,traits,Distance>& y); // until C++20
0549
0550 template <class T, class charT = char, class traits = char_traits<charT> >
0551 class ostream_iterator
0552 : public iterator<output_iterator_tag, void, void, void, void> // until C++17
0553 {
0554 public:
0555 typedef output_iterator_tag iterator_category;
0556 typedef void value_type;
0557 typedef void difference_type; // until C++20
0558 typedef ptrdiff_t difference_type; // since C++20
0559 typedef void pointer;
0560 typedef void reference;
0561
0562 typedef charT char_type;
0563 typedef traits traits_type;
0564 typedef basic_ostream<charT,traits> ostream_type;
0565
0566 ostream_iterator(ostream_type& s);
0567 ostream_iterator(ostream_type& s, const charT* delimiter);
0568 ostream_iterator(const ostream_iterator& x);
0569 ~ostream_iterator();
0570 ostream_iterator& operator=(const T& value);
0571
0572 ostream_iterator& operator*();
0573 ostream_iterator& operator++();
0574 ostream_iterator& operator++(int);
0575 };
0576
0577 template<class charT, class traits = char_traits<charT> >
0578 class istreambuf_iterator
0579 : public iterator<input_iterator_tag, charT, traits::off_type, unspecified, charT> // until C++17
0580 {
0581 public:
0582 typedef input_iterator_tag iterator_category;
0583 typedef charT value_type;
0584 typedef traits::off_type difference_type;
0585 typedef unspecified pointer;
0586 typedef charT reference;
0587
0588 typedef charT char_type;
0589 typedef traits traits_type;
0590 typedef traits::int_type int_type;
0591 typedef basic_streambuf<charT, traits> streambuf_type;
0592 typedef basic_istream<charT, traits> istream_type;
0593
0594 istreambuf_iterator() noexcept; // constexpr since C++11
0595 constexpr istreambuf_iterator(default_sentinel_t) noexcept; // since C++20
0596 istreambuf_iterator(istream_type& s) noexcept;
0597 istreambuf_iterator(streambuf_type* s) noexcept;
0598 istreambuf_iterator(a-private-type) noexcept;
0599
0600 charT operator*() const;
0601 pointer operator->() const;
0602 istreambuf_iterator& operator++();
0603 a-private-type operator++(int);
0604
0605 bool equal(const istreambuf_iterator& b) const;
0606 friend bool operator==(const istreambuf_iterator& i, default_sentinel_t s); // since C++20
0607 };
0608
0609 template <class charT, class traits>
0610 bool operator==(const istreambuf_iterator<charT,traits>& a,
0611 const istreambuf_iterator<charT,traits>& b);
0612 template <class charT, class traits>
0613 bool operator!=(const istreambuf_iterator<charT,traits>& a,
0614 const istreambuf_iterator<charT,traits>& b); // until C++20
0615
0616 template <class charT, class traits = char_traits<charT> >
0617 class ostreambuf_iterator
0618 : public iterator<output_iterator_tag, void, void, void, void> // until C++17
0619 {
0620 public:
0621 typedef output_iterator_tag iterator_category;
0622 typedef void value_type;
0623 typedef void difference_type; // until C++20
0624 typedef ptrdiff_t difference_type; // since C++20
0625 typedef void pointer;
0626 typedef void reference;
0627
0628 typedef charT char_type;
0629 typedef traits traits_type;
0630 typedef basic_streambuf<charT, traits> streambuf_type;
0631 typedef basic_ostream<charT, traits> ostream_type;
0632
0633 ostreambuf_iterator(ostream_type& s) noexcept;
0634 ostreambuf_iterator(streambuf_type* s) noexcept;
0635 ostreambuf_iterator& operator=(charT c);
0636 ostreambuf_iterator& operator*();
0637 ostreambuf_iterator& operator++();
0638 ostreambuf_iterator& operator++(int);
0639 bool failed() const noexcept;
0640 };
0641
0642 template <class C> constexpr auto begin(C& c) -> decltype(c.begin()); // constexpr since C++17
0643 template <class C> constexpr auto begin(const C& c) -> decltype(c.begin()); // constexpr since C++17
0644 template <class C> constexpr auto end(C& c) -> decltype(c.end()); // constexpr since C++17
0645 template <class C> constexpr auto end(const C& c) -> decltype(c.end()); // constexpr since C++17
0646 template <class T, size_t N> constexpr T* begin(T (&array)[N]) noexcept;
0647 template <class T, size_t N> constexpr T* end(T (&array)[N]) noexcept;
0648
0649 template <class C> constexpr auto cbegin(const C& c) noexcept(see-below) -> decltype(std::begin(c)); // C++14
0650 template <class C> constexpr auto cend(const C& c) noexcept(see-below) -> decltype(std::end(c)); // C++14
0651 template <class C> constexpr auto rbegin(C& c) -> decltype(c.rbegin()); // C++14, constexpr since C++17
0652 template <class C> constexpr auto rbegin(const C& c) -> decltype(c.rbegin()); // C++14, constexpr since C++17
0653 template <class C> constexpr auto rend(C& c) -> decltype(c.rend()); // C++14, constexpr since C++17
0654 template <class C> constexpr auto rend(const C& c) -> decltype(c.rend()); // C++14, constexpr since C++17
0655 template <class E> constexpr reverse_iterator<const E*> rbegin(initializer_list<E> il); // C++14, constexpr since C++17
0656 template <class E> constexpr reverse_iterator<const E*> rend(initializer_list<E> il); // C++14, constexpr since C++17
0657 template <class T, size_t N> constexpr reverse_iterator<T*> rbegin(T (&array)[N]); // C++14, constexpr since C++17
0658 template <class T, size_t N> constexpr reverse_iterator<T*> rend(T (&array)[N]); // C++14, constexpr since C++17
0659 template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c)); // C++14, constexpr since C++17
0660 template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c)); // C++14, constexpr since C++17
0661
0662 // 24.8, container access:
0663 template <class C> constexpr auto size(const C& c) -> decltype(c.size()); // C++17
0664 template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17
0665
0666 template <class C> constexpr auto ssize(const C& c)
0667 -> common_type_t<ptrdiff_t, make_signed_t<decltype(c.size())>>; // C++20
0668 template <class T, ptrdiff_t> constexpr ptrdiff_t ssize(const T (&array)[N]) noexcept; // C++20
0669
0670 template <class C> constexpr auto empty(const C& c) -> decltype(c.empty()); // C++17
0671 template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept; // C++17
0672 template <class E> constexpr bool empty(initializer_list<E> il) noexcept; // C++17
0673 template <class C> constexpr auto data(C& c) -> decltype(c.data()); // C++17
0674 template <class C> constexpr auto data(const C& c) -> decltype(c.data()); // C++17
0675 template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept; // C++17
0676 template <class E> constexpr const E* data(initializer_list<E> il) noexcept; // C++17
0677
0678 } // std
0679
0680 */
0681
0682 #include <__cxx03/__config>
0683 #include <__cxx03/__iterator/access.h>
0684 #include <__cxx03/__iterator/advance.h>
0685 #include <__cxx03/__iterator/back_insert_iterator.h>
0686 #include <__cxx03/__iterator/distance.h>
0687 #include <__cxx03/__iterator/front_insert_iterator.h>
0688 #include <__cxx03/__iterator/insert_iterator.h>
0689 #include <__cxx03/__iterator/istream_iterator.h>
0690 #include <__cxx03/__iterator/istreambuf_iterator.h>
0691 #include <__cxx03/__iterator/iterator.h>
0692 #include <__cxx03/__iterator/iterator_traits.h>
0693 #include <__cxx03/__iterator/move_iterator.h>
0694 #include <__cxx03/__iterator/next.h>
0695 #include <__cxx03/__iterator/ostream_iterator.h>
0696 #include <__cxx03/__iterator/ostreambuf_iterator.h>
0697 #include <__cxx03/__iterator/prev.h>
0698 #include <__cxx03/__iterator/reverse_iterator.h>
0699 #include <__cxx03/__iterator/wrap_iter.h>
0700
0701 #if _LIBCPP_STD_VER >= 14
0702 # include <__cxx03/__iterator/reverse_access.h>
0703 #endif
0704
0705 #if _LIBCPP_STD_VER >= 17
0706 # include <__cxx03/__iterator/data.h>
0707 # include <__cxx03/__iterator/empty.h>
0708 # include <__cxx03/__iterator/size.h>
0709 #endif
0710
0711 #if _LIBCPP_STD_VER >= 20
0712 # include <__cxx03/__iterator/common_iterator.h>
0713 # include <__cxx03/__iterator/concepts.h>
0714 # include <__cxx03/__iterator/counted_iterator.h>
0715 # include <__cxx03/__iterator/default_sentinel.h>
0716 # include <__cxx03/__iterator/incrementable_traits.h>
0717 # include <__cxx03/__iterator/indirectly_comparable.h>
0718 # include <__cxx03/__iterator/iter_move.h>
0719 # include <__cxx03/__iterator/iter_swap.h>
0720 # include <__cxx03/__iterator/mergeable.h>
0721 # include <__cxx03/__iterator/move_sentinel.h>
0722 # include <__cxx03/__iterator/permutable.h>
0723 # include <__cxx03/__iterator/projected.h>
0724 # include <__cxx03/__iterator/readable_traits.h>
0725 # include <__cxx03/__iterator/sortable.h>
0726 # include <__cxx03/__iterator/unreachable_sentinel.h>
0727 #endif
0728
0729 #include <__cxx03/version>
0730
0731 // standard-mandated includes
0732
0733 // [iterator.synopsis]
0734 #include <__cxx03/compare>
0735 #include <__cxx03/concepts>
0736
0737 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
0738 # pragma GCC system_header
0739 #endif
0740
0741 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 17
0742 # include <__cxx03/variant>
0743 #endif
0744
0745 #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
0746 # include <__cxx03/cstdlib>
0747 # include <__cxx03/exception>
0748 # include <__cxx03/new>
0749 # include <__cxx03/type_traits>
0750 # include <__cxx03/typeinfo>
0751 # include <__cxx03/utility>
0752 #endif
0753
0754 #endif // _LIBCPP___CXX03_ITERATOR
