1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef _LIBCPP_ITERATOR
11#define _LIBCPP_ITERATOR
12
13/*
14    iterator synopsis
15
16#include <concepts>
17
18namespace std
19{
20template<class> struct incrementable_traits;       // since C++20
21template<class T>
22  using iter_difference_t = see below;             // since C++20
23
24template<class> struct indirectly_readable_traits; // since C++20
25template<class T>
26  using iter_value_t = see below;                  // since C++20
27
28template<class Iterator>
29struct iterator_traits;
30
31template<class T>
32  requires is_object_v<T>                    // since C++20
33struct iterator_traits<T*>;
34
35template<dereferenceable T>
36  using iter_reference_t = decltype(*declval<T&>());
37
38namespace ranges::inline unspecified {
39    inline constexpr unspecified iter_move = unspecified; // since C++20, nodiscard as an extension
40}}
41
42template<dereferenceable T>
43  requires ...
44using iter_rvalue_reference_t = decltype(ranges::iter_move(declval<T&>())); // since C++20
45
46// [iterator.concepts], iterator concepts
47// [iterator.concept.readable], concept indirectly_readable
48template<class In>
49  concept indirectly_readable = see below;                      // since C++20
50
51template<indirectly_readable T>
52  using iter_common_reference_t =
53    common_reference_t<iter_reference_t<T>, iter_value_t<T>&>;  // since C++20
54
55// [iterator.concept.writable], concept indirectly_writable
56template<class Out, class T>
57  concept indirectly_writable = see below;                // since C++20
58
59// [iterator.concept.winc], concept weakly_incrementable
60template<class I>
61  concept weakly_incrementable = see below;                // since C++20
62
63// [iterator.concept.inc], concept incrementable
64template<class I>
65  concept incrementable = see below;                       // since C++20
66
67// [iterator.concept.iterator], concept input_or_output_iterator
68  template<class I>
69    concept input_or_output_iterator = see below;          // since C++20
70
71// [iterator.concept.sentinel], concept sentinel_for
72template<class S, class I>
73  concept sentinel_for = see below;                        // since C++20
74
75// [iterator.concept.sizedsentinel], concept sized_sentinel_for
76template<class S, class I>
77  inline constexpr bool disable_sized_sentinel_for = false;
78
79template<class S, class I>
80  concept sized_sentinel_for = see below;
81
82// [iterator.concept.input], concept input_iterator
83template<class I>
84  concept input_iterator = see below;                      // since C++20
85
86// [iterator.concept.output], concept output_iterator
87template<class I, class T>
88  concept output_iterator = see below;                     // since C++20
89
90// [iterator.concept.forward], concept forward_iterator
91template<class I>
92  concept forward_iterator = see below;                    // since C++20
93
94// [iterator.concept.bidir], concept bidirectional_iterator
95template<class I>
96  concept bidirectional_iterator = see below;              // since C++20
97
98// [iterator.concept.random.access], concept random_access_iterator
99template<class I>
100  concept random_access_iterator = see below;              // since C++20
101
102// [indirectcallable]
103// [indirectcallable.indirectinvocable]
104template<class F, class I>
105  concept indirectly_unary_invocable = see below;          // since C++20
106
107template<class F, class I>
108  concept indirectly_regular_unary_invocable = see below;  // since C++20
109
110template<class F, class I>
111  concept indirect_unary_predicate = see below;            // since C++20
112
113template<class F, class I1, class I2>
114  concept indirect_binary_predicate = see below;           // since C++20
115
116template<class F, class I1, class I2 = I1>
117  concept indirect_equivalence_relation = see below;       // since C++20
118
119template<class F, class I1, class I2 = I1>
120  concept indirect_strict_weak_order = see below;          // since C++20
121
122template<class F, class... Is>
123  using indirect_result_t = see below;                     // since C++20
124
125// [projected], projected
126template<indirectly_readable I, indirectly_regular_unary_invocable<I> Proj>
127  struct projected;                                        // since C++20
128
129template<weakly_incrementable I, indirectly_regular_unary_invocable<I> Proj>
130  struct incrementable_traits<projected<I, Proj>>;         // since C++20
131
132// [alg.req.ind.move], concept indirectly_movable
133template<class In, class Out>
134  concept indirectly_movable = see below;                  // since C++20
135
136template<class In, class Out>
137  concept indirectly_movable_storable = see below;         // since C++20
138
139// [alg.req.ind.copy], concept indirectly_copyable
140template<class In, class Out>
141  concept indirectly_copyable = see below;                  // since C++20
142
143template<class In, class Out>
144  concept indirectly_copyable_storable = see below;         // since C++20
145
146// [alg.req.ind.swap], concept indirectly_swappable
147template<class I1, class I2 = I1>
148  concept indirectly_swappable = see below;                // since C++20
149
150// [alg.req.permutable], concept permutable                // since C++20
151template<class I>
152  concept permutable = see below;
153
154template<class I1, class I2, class R, class P1 = identity,
155         class P2 = identity>
156  concept indirectly_comparable =
157    indirect_binary_predicate<R, projected<I1, P1>, projected<I2, P2>>; // since C++20
158
159template<input_or_output_iterator I, sentinel_for<I> S>
160  requires (!same_as<I, S> && copyable<I>)
161class common_iterator;                                     // since C++20
162
163template<class Category, class T, class Distance = ptrdiff_t,
164         class Pointer = T*, class Reference = T&>
165struct iterator                                            // deprecated in C++17
166{
167    typedef T         value_type;
168    typedef Distance  difference_type;
169    typedef Pointer   pointer;
170    typedef Reference reference;
171    typedef Category  iterator_category;
172};
173
174struct input_iterator_tag  {};
175struct output_iterator_tag {};
176struct forward_iterator_tag       : public input_iterator_tag         {};
177struct bidirectional_iterator_tag : public forward_iterator_tag       {};
178struct random_access_iterator_tag : public bidirectional_iterator_tag {};
179struct contiguous_iterator_tag    : public random_access_iterator_tag {};
180
181// 27.4.3, iterator operations
182template <class InputIterator, class Distance>  // constexpr in C++17
183  constexpr void advance(InputIterator& i, Distance n);
184
185template <class InputIterator>  // constexpr in C++17
186  constexpr typename iterator_traits<InputIterator>::difference_type
187    distance(InputIterator first, InputIterator last);
188
189template <class InputIterator>  // constexpr in C++17
190  constexpr InputIterator next(InputIterator x,
191typename iterator_traits<InputIterator>::difference_type n = 1);
192
193template <class BidirectionalIterator>  // constexpr in C++17
194  constexpr BidirectionalIterator prev(BidirectionalIterator x,
195    typename iterator_traits<BidirectionalIterator>::difference_type n = 1);
196
197// [range.iter.ops], range iterator operations
198namespace ranges {
199  // [range.iter.op.advance], ranges::advance
200  template<input_or_output_iterator I>
201    constexpr void advance(I& i, iter_difference_t<I> n);                          // since C++20
202  template<input_or_output_iterator I, sentinel_for<I> S>
203    constexpr void advance(I& i, S bound);                                         // since C++20
204  template<input_or_output_iterator I, sentinel_for<I> S>
205    constexpr iter_difference_t<I> advance(I& i, iter_difference_t<I> n, S bound); // since C++20
206}
207
208template <class Iterator>
209class reverse_iterator
210    : public iterator<typename iterator_traits<Iterator>::iterator_category, // until C++17
211                      typename iterator_traits<Iterator>::value_type,
212                      typename iterator_traits<Iterator>::difference_type,
213                      typename iterator_traits<Iterator>::pointer,
214                      typename iterator_traits<Iterator>::reference>
215{
216protected:
217    Iterator current;
218public:
219    typedef Iterator                                            iterator_type;
220    typedef typename iterator_traits<Iterator>::difference_type difference_type;
221    typedef typename iterator_traits<Iterator>::reference       reference;
222    typedef typename iterator_traits<Iterator>::pointer         pointer;
223
224    constexpr reverse_iterator();
225    constexpr explicit reverse_iterator(Iterator x);
226    template <class U> constexpr reverse_iterator(const reverse_iterator<U>& u);
227    template <class U> constexpr reverse_iterator& operator=(const reverse_iterator<U>& u);
228    constexpr Iterator base() const;
229    constexpr reference operator*() const;
230    constexpr pointer   operator->() const;
231    constexpr reverse_iterator& operator++();
232    constexpr reverse_iterator  operator++(int);
233    constexpr reverse_iterator& operator--();
234    constexpr reverse_iterator  operator--(int);
235    constexpr reverse_iterator  operator+ (difference_type n) const;
236    constexpr reverse_iterator& operator+=(difference_type n);
237    constexpr reverse_iterator  operator- (difference_type n) const;
238    constexpr reverse_iterator& operator-=(difference_type n);
239    constexpr reference         operator[](difference_type n) const;
240};
241
242template <class Iterator1, class Iterator2>
243constexpr bool                          // constexpr in C++17
244operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
245
246template <class Iterator1, class Iterator2>
247constexpr bool                          // constexpr in C++17
248operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
249
250template <class Iterator1, class Iterator2>
251constexpr bool                          // constexpr in C++17
252operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
253
254template <class Iterator1, class Iterator2>
255constexpr bool                          // constexpr in C++17
256operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
257
258template <class Iterator1, class Iterator2>
259constexpr bool                          // constexpr in C++17
260operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
261
262template <class Iterator1, class Iterator2>
263constexpr bool                          // constexpr in C++17
264operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
265
266template <class Iterator1, class Iterator2>
267constexpr auto
268operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y)
269-> decltype(__y.base() - __x.base());   // constexpr in C++17
270
271template <class Iterator>
272constexpr reverse_iterator<Iterator>
273operator+(typename reverse_iterator<Iterator>::difference_type n,
274          const reverse_iterator<Iterator>& x);   // constexpr in C++17
275
276template <class Iterator>
277constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14, constexpr in C++17
278
279template <class Container>
280class back_insert_iterator
281    : public iterator<output_iterator_tag, void, void, void, void> // until C++17
282{
283protected:
284    Container* container;
285public:
286    typedef Container                   container_type;
287    typedef void                        value_type;
288    typedef void                        difference_type; // until C++20
289    typedef ptrdiff_t                   difference_type; // since C++20
290    typedef void                        reference;
291    typedef void                        pointer;
292
293    explicit back_insert_iterator(Container& x);  // constexpr in C++20
294    back_insert_iterator& operator=(const typename Container::value_type& value);  // constexpr in C++20
295    back_insert_iterator& operator*();  // constexpr in C++20
296    back_insert_iterator& operator++();  // constexpr in C++20
297    back_insert_iterator  operator++(int);  // constexpr in C++20
298};
299
300template <class Container> back_insert_iterator<Container> back_inserter(Container& x);  // constexpr in C++20
301
302template <class Container>
303class front_insert_iterator
304    : public iterator<output_iterator_tag, void, void, void, void> // until C++17
305{
306protected:
307    Container* container;
308public:
309    typedef Container                    container_type;
310    typedef void                         value_type;
311    typedef void                         difference_type; // until C++20
312    typedef ptrdiff_t                    difference_type; // since C++20
313    typedef void                         reference;
314    typedef void                         pointer;
315
316    explicit front_insert_iterator(Container& x);  // constexpr in C++20
317    front_insert_iterator& operator=(const typename Container::value_type& value);  // constexpr in C++20
318    front_insert_iterator& operator*();  // constexpr in C++20
319    front_insert_iterator& operator++();  // constexpr in C++20
320    front_insert_iterator  operator++(int);  // constexpr in C++20
321};
322
323template <class Container> front_insert_iterator<Container> front_inserter(Container& x);  // constexpr in C++20
324
325template <class Container>
326class insert_iterator
327    : public iterator<output_iterator_tag, void, void, void, void> // until C++17
328{
329protected:
330    Container* container;
331    typename Container::iterator iter;
332public:
333    typedef Container              container_type;
334    typedef void                   value_type;
335    typedef void                   difference_type; // until C++20
336    typedef ptrdiff_t              difference_type; // since C++20
337    typedef void                   reference;
338    typedef void                   pointer;
339
340    insert_iterator(Container& x, typename Container::iterator i);  // constexpr in C++20
341    insert_iterator& operator=(const typename Container::value_type& value);  // constexpr in C++20
342    insert_iterator& operator*();  // constexpr in C++20
343    insert_iterator& operator++();  // constexpr in C++20
344    insert_iterator& operator++(int);  // constexpr in C++20
345};
346
347template <class Container, class Iterator>
348insert_iterator<Container> inserter(Container& x, Iterator i);  // constexpr in C++20
349
350template <class Iterator>
351class move_iterator {
352public:
353    typedef Iterator                                              iterator_type;
354    typedef typename iterator_traits<Iterator>::difference_type   difference_type;
355    typedef Iterator                                              pointer;
356    typedef typename iterator_traits<Iterator>::value_type        value_type;
357    typedef typename iterator_traits<Iterator>::iterator_category iterator_category;
358    typedef value_type&&                                          reference;
359
360    constexpr move_iterator();  // all the constexprs are in C++17
361    constexpr explicit move_iterator(Iterator i);
362    template <class U>
363      constexpr move_iterator(const move_iterator<U>& u);
364    template <class U>
365      constexpr move_iterator& operator=(const move_iterator<U>& u);
366    constexpr iterator_type base() const;
367    constexpr reference operator*() const;
368    constexpr pointer operator->() const;
369    constexpr move_iterator& operator++();
370    constexpr move_iterator operator++(int);
371    constexpr move_iterator& operator--();
372    constexpr move_iterator operator--(int);
373    constexpr move_iterator operator+(difference_type n) const;
374    constexpr move_iterator& operator+=(difference_type n);
375    constexpr move_iterator operator-(difference_type n) const;
376    constexpr move_iterator& operator-=(difference_type n);
377    constexpr unspecified operator[](difference_type n) const;
378private:
379    Iterator current; // exposition only
380};
381
382template <class Iterator1, class Iterator2>
383constexpr bool   // constexpr in C++17
384operator==(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
385
386template <class Iterator1, class Iterator2>
387constexpr bool   // constexpr in C++17
388operator!=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
389
390template <class Iterator1, class Iterator2>
391constexpr bool   // constexpr in C++17
392operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
393
394template <class Iterator1, class Iterator2>
395constexpr bool   // constexpr in C++17
396operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
397
398template <class Iterator1, class Iterator2>
399constexpr bool   // constexpr in C++17
400operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
401
402template <class Iterator1, class Iterator2>
403constexpr bool   // constexpr in C++17
404operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
405
406template <class Iterator1, class Iterator2>
407constexpr auto   // constexpr in C++17
408operator-(const move_iterator<Iterator1>& x,
409          const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base());
410
411template <class Iterator>
412constexpr move_iterator<Iterator> operator+(   // constexpr in C++17
413            typename move_iterator<Iterator>::difference_type n,
414            const move_iterator<Iterator>& x);
415
416template <class Iterator>   // constexpr in C++17
417constexpr  move_iterator<Iterator> make_move_iterator(const Iterator& i);
418
419// [default.sentinel], default sentinel
420struct default_sentinel_t;
421inline constexpr default_sentinel_t default_sentinel{};
422
423// [iterators.counted], counted iterators
424template<input_or_output_iterator I> class counted_iterator;
425
426template<input_iterator I>
427  requires see below
428  struct iterator_traits<counted_iterator<I>>;
429
430// [unreachable.sentinel], unreachable sentinel
431struct unreachable_sentinel_t;
432inline constexpr unreachable_sentinel_t unreachable_sentinel{};
433
434template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t>
435class istream_iterator
436    : public iterator<input_iterator_tag, T, Distance, const T*, const T&> // until C++17
437{
438public:
439    typedef input_iterator_tag           iterator_category;
440    typedef T                            value_type;
441    typedef Distance                     difference_type;
442    typedef const T*                     pointer;
443    typedef const T&                     reference;
444
445    typedef charT                        char_type;
446    typedef traits                       traits_type;
447    typedef basic_istream<charT, traits> istream_type;
448
449    constexpr istream_iterator();
450    istream_iterator(istream_type& s);
451    istream_iterator(const istream_iterator& x);
452    ~istream_iterator();
453
454    const T& operator*() const;
455    const T* operator->() const;
456    istream_iterator& operator++();
457    istream_iterator  operator++(int);
458};
459
460template <class T, class charT, class traits, class Distance>
461bool operator==(const istream_iterator<T,charT,traits,Distance>& x,
462                const istream_iterator<T,charT,traits,Distance>& y);
463template <class T, class charT, class traits, class Distance>
464bool operator!=(const istream_iterator<T,charT,traits,Distance>& x,
465                const istream_iterator<T,charT,traits,Distance>& y);
466
467template <class T, class charT = char, class traits = char_traits<charT> >
468class ostream_iterator
469    : public iterator<output_iterator_tag, void, void, void, void> // until C++17
470{
471public:
472    typedef output_iterator_tag         iterator_category;
473    typedef void                        value_type;
474    typedef void                        difference_type; // until C++20
475    typedef ptrdiff_t                   difference_type; // since C++20
476    typedef void                        pointer;
477    typedef void                        reference;
478
479    typedef charT char_type;
480    typedef traits traits_type;
481    typedef basic_ostream<charT,traits> ostream_type;
482
483    ostream_iterator(ostream_type& s);
484    ostream_iterator(ostream_type& s, const charT* delimiter);
485    ostream_iterator(const ostream_iterator& x);
486    ~ostream_iterator();
487    ostream_iterator& operator=(const T& value);
488
489    ostream_iterator& operator*();
490    ostream_iterator& operator++();
491    ostream_iterator& operator++(int);
492};
493
494template<class charT, class traits = char_traits<charT> >
495class istreambuf_iterator
496    : public iterator<input_iterator_tag, charT, traits::off_type, unspecified, charT> // until C++17
497{
498public:
499    typedef input_iterator_tag              iterator_category;
500    typedef charT                           value_type;
501    typedef traits::off_type                difference_type;
502    typedef unspecified                     pointer;
503    typedef charT                           reference;
504
505    typedef charT                           char_type;
506    typedef traits                          traits_type;
507    typedef traits::int_type                int_type;
508    typedef basic_streambuf<charT, traits>  streambuf_type;
509    typedef basic_istream<charT, traits>    istream_type;
510
511    istreambuf_iterator() noexcept;
512    istreambuf_iterator(istream_type& s) noexcept;
513    istreambuf_iterator(streambuf_type* s) noexcept;
514    istreambuf_iterator(a-private-type) noexcept;
515
516    charT                operator*() const;
517    pointer operator->() const;
518    istreambuf_iterator& operator++();
519    a-private-type       operator++(int);
520
521    bool equal(const istreambuf_iterator& b) const;
522};
523
524template <class charT, class traits>
525bool operator==(const istreambuf_iterator<charT,traits>& a,
526                const istreambuf_iterator<charT,traits>& b);
527template <class charT, class traits>
528bool operator!=(const istreambuf_iterator<charT,traits>& a,
529                const istreambuf_iterator<charT,traits>& b);
530
531template <class charT, class traits = char_traits<charT> >
532class ostreambuf_iterator
533    : public iterator<output_iterator_tag, void, void, void, void> // until C++17
534{
535public:
536    typedef output_iterator_tag            iterator_category;
537    typedef void                           value_type;
538    typedef void                           difference_type; // until C++20
539    typedef ptrdiff_t                      difference_type; // since C++20
540    typedef void                           pointer;
541    typedef void                           reference;
542
543    typedef charT                          char_type;
544    typedef traits                         traits_type;
545    typedef basic_streambuf<charT, traits> streambuf_type;
546    typedef basic_ostream<charT, traits>   ostream_type;
547
548    ostreambuf_iterator(ostream_type& s) noexcept;
549    ostreambuf_iterator(streambuf_type* s) noexcept;
550    ostreambuf_iterator& operator=(charT c);
551    ostreambuf_iterator& operator*();
552    ostreambuf_iterator& operator++();
553    ostreambuf_iterator& operator++(int);
554    bool failed() const noexcept;
555};
556
557template <class C> constexpr auto begin(C& c) -> decltype(c.begin());
558template <class C> constexpr auto begin(const C& c) -> decltype(c.begin());
559template <class C> constexpr auto end(C& c) -> decltype(c.end());
560template <class C> constexpr auto end(const C& c) -> decltype(c.end());
561template <class T, size_t N> constexpr T* begin(T (&array)[N]);
562template <class T, size_t N> constexpr T* end(T (&array)[N]);
563
564template <class C> auto constexpr cbegin(const C& c) -> decltype(std::begin(c));        // C++14
565template <class C> auto constexpr cend(const C& c) -> decltype(std::end(c));            // C++14
566template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin());                 // C++14
567template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin());           // C++14
568template <class C> auto constexpr rend(C& c) -> decltype(c.rend());                     // C++14
569template <class C> constexpr auto rend(const C& c) -> decltype(c.rend());               // C++14
570template <class E> reverse_iterator<const E*> constexpr rbegin(initializer_list<E> il); // C++14
571template <class E> reverse_iterator<const E*> constexpr rend(initializer_list<E> il);   // C++14
572template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]);      // C++14
573template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]);        // C++14
574template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c));      // C++14
575template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c));          // C++14
576
577// 24.8, container access:
578template <class C> constexpr auto size(const C& c) -> decltype(c.size());         // C++17
579template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17
580
581template <class C> constexpr auto ssize(const C& c)
582    -> common_type_t<ptrdiff_t, make_signed_t<decltype(c.size())>>;                    // C++20
583template <class T, ptrdiff_t> constexpr ptrdiff_t ssize(const T (&array)[N]) noexcept; // C++20
584
585template <class C> constexpr auto empty(const C& c) -> decltype(c.empty());       // C++17
586template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept;  // C++17
587template <class E> constexpr bool empty(initializer_list<E> il) noexcept;         // C++17
588template <class C> constexpr auto data(C& c) -> decltype(c.data());               // C++17
589template <class C> constexpr auto data(const C& c) -> decltype(c.data());         // C++17
590template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept;           // C++17
591template <class E> constexpr const E* data(initializer_list<E> il) noexcept;      // C++17
592
593}  // std
594
595*/
596
597#include <__config>
598#include <__debug>
599#include <__functional_base>
600#include <__iterator/access.h>
601#include <__iterator/advance.h>
602#include <__iterator/back_insert_iterator.h>
603#include <__iterator/common_iterator.h>
604#include <__iterator/concepts.h>
605#include <__iterator/counted_iterator.h>
606#include <__iterator/data.h>
607#include <__iterator/default_sentinel.h>
608#include <__iterator/distance.h>
609#include <__iterator/empty.h>
610#include <__iterator/erase_if_container.h>
611#include <__iterator/front_insert_iterator.h>
612#include <__iterator/incrementable_traits.h>
613#include <__iterator/indirectly_comparable.h>
614#include <__iterator/insert_iterator.h>
615#include <__iterator/istream_iterator.h>
616#include <__iterator/istreambuf_iterator.h>
617#include <__iterator/iter_move.h>
618#include <__iterator/iter_swap.h>
619#include <__iterator/iterator.h>
620#include <__iterator/iterator_traits.h>
621#include <__iterator/move_iterator.h>
622#include <__iterator/next.h>
623#include <__iterator/ostream_iterator.h>
624#include <__iterator/ostreambuf_iterator.h>
625#include <__iterator/permutable.h>
626#include <__iterator/prev.h>
627#include <__iterator/projected.h>
628#include <__iterator/readable_traits.h>
629#include <__iterator/reverse_access.h>
630#include <__iterator/reverse_iterator.h>
631#include <__iterator/size.h>
632#include <__iterator/unreachable_sentinel.h>
633#include <__iterator/wrap_iter.h>
634#include <__memory/addressof.h>
635#include <__memory/pointer_traits.h>
636#include <compare>
637#include <concepts> // Mandated by the Standard.
638#include <cstddef>
639#include <initializer_list>
640#include <type_traits>
641#include <utility>
642#include <version>
643
644#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
645#  pragma GCC system_header
646#endif
647
648#endif // _LIBCPP_ITERATOR
649