2 //===-------------------------- iterator ----------------------------------===//
4 // The LLVM Compiler Infrastructure
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
11 #ifndef _LIBCPP_ITERATOR
12 #define _LIBCPP_ITERATOR
20 template<class Iterator>
21 struct iterator_traits
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;
31 struct iterator_traits<T*>
33 typedef ptrdiff_t difference_type;
37 typedef random_access_iterator_tag iterator_category;
41 struct iterator_traits<const T*>
43 typedef ptrdiff_t difference_type;
45 typedef const T* pointer;
46 typedef const T& reference;
47 typedef random_access_iterator_tag iterator_category;
50 template<class Category, class T, class Distance = ptrdiff_t,
51 class Pointer = T*, class Reference = T&>
55 typedef Distance difference_type;
56 typedef Pointer pointer;
57 typedef Reference reference;
58 typedef Category iterator_category;
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 {};
67 // extension: second argument not conforming to C++03
68 template <class InputIterator>
69 void advance(InputIterator& i,
70 typename iterator_traits<InputIterator>::difference_type n);
72 template <class InputIterator>
73 typename iterator_traits<InputIterator>::difference_type
74 distance(InputIterator first, InputIterator last);
76 template <class Iterator>
77 class reverse_iterator
78 : public iterator<typename iterator_traits<Iterator>::iterator_category,
79 typename iterator_traits<Iterator>::value_type,
80 typename iterator_traits<Iterator>::difference_type,
81 typename iterator_traits<Iterator>::pointer,
82 typename iterator_traits<Iterator>::reference>
87 typedef Iterator iterator_type;
88 typedef typename iterator_traits<Iterator>::difference_type difference_type;
89 typedef typename iterator_traits<Iterator>::reference reference;
90 typedef typename iterator_traits<Iterator>::pointer pointer;
93 explicit reverse_iterator(Iterator x);
94 template <class U> reverse_iterator(const reverse_iterator<U>& u);
95 Iterator base() const;
96 reference operator*() const;
97 pointer operator->() const;
98 reverse_iterator& operator++();
99 reverse_iterator operator++(int);
100 reverse_iterator& operator--();
101 reverse_iterator operator--(int);
102 reverse_iterator operator+ (difference_type n) const;
103 reverse_iterator& operator+=(difference_type n);
104 reverse_iterator operator- (difference_type n) const;
105 reverse_iterator& operator-=(difference_type n);
106 reference operator[](difference_type n) const;
109 template <class Iterator1, class Iterator2>
111 operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
113 template <class Iterator1, class Iterator2>
115 operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
117 template <class Iterator1, class Iterator2>
119 operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
121 template <class Iterator1, class Iterator2>
123 operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
125 template <class Iterator1, class Iterator2>
127 operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
129 template <class Iterator1, class Iterator2>
131 operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
133 template <class Iterator1, class Iterator2>
134 typename reverse_iterator<Iterator1>::difference_type
135 operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
137 template <class Iterator>
138 reverse_iterator<Iterator>
139 operator+(typename reverse_iterator<Iterator>::difference_type n, const reverse_iterator<Iterator>& x);
141 template <class Iterator> reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14
143 template <class Container>
144 class back_insert_iterator
147 Container* container;
149 typedef Container container_type;
150 typedef void value_type;
151 typedef void difference_type;
152 typedef back_insert_iterator<Cont>& reference;
153 typedef void pointer;
155 explicit back_insert_iterator(Container& x);
156 back_insert_iterator& operator=(const typename Container::value_type& value);
157 back_insert_iterator& operator*();
158 back_insert_iterator& operator++();
159 back_insert_iterator operator++(int);
162 template <class Container> back_insert_iterator<Container> back_inserter(Container& x);
164 template <class Container>
165 class front_insert_iterator
168 Container* container;
170 typedef Container container_type;
171 typedef void value_type;
172 typedef void difference_type;
173 typedef front_insert_iterator<Cont>& reference;
174 typedef void pointer;
176 explicit front_insert_iterator(Container& x);
177 front_insert_iterator& operator=(const typename Container::value_type& value);
178 front_insert_iterator& operator*();
179 front_insert_iterator& operator++();
180 front_insert_iterator operator++(int);
183 template <class Container> front_insert_iterator<Container> front_inserter(Container& x);
185 template <class Container>
186 class insert_iterator
189 Container* container;
190 typename Container::iterator iter;
192 typedef Container container_type;
193 typedef void value_type;
194 typedef void difference_type;
195 typedef insert_iterator<Cont>& reference;
196 typedef void pointer;
198 insert_iterator(Container& x, typename Container::iterator i);
199 insert_iterator& operator=(const typename Container::value_type& value);
200 insert_iterator& operator*();
201 insert_iterator& operator++();
202 insert_iterator& operator++(int);
205 template <class Container, class Iterator>
206 insert_iterator<Container> inserter(Container& x, Iterator i);
208 template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t>
209 class istream_iterator
210 : public iterator<input_iterator_tag, T, Distance, const T*, const T&>
213 typedef charT char_type;
214 typedef traits traits_type;
215 typedef basic_istream<charT,traits> istream_type;
218 istream_iterator(istream_type& s);
219 istream_iterator(const istream_iterator& x);
222 const T& operator*() const;
223 const T* operator->() const;
224 istream_iterator& operator++();
225 istream_iterator operator++(int);
228 template <class T, class charT, class traits, class Distance>
229 bool operator==(const istream_iterator<T,charT,traits,Distance>& x,
230 const istream_iterator<T,charT,traits,Distance>& y);
231 template <class T, class charT, class traits, class Distance>
232 bool operator!=(const istream_iterator<T,charT,traits,Distance>& x,
233 const istream_iterator<T,charT,traits,Distance>& y);
235 template <class T, class charT = char, class traits = char_traits<charT> >
236 class ostream_iterator
237 : public iterator<output_iterator_tag, void, void, void ,void>
240 typedef charT char_type;
241 typedef traits traits_type;
242 typedef basic_ostream<charT,traits> ostream_type;
244 ostream_iterator(ostream_type& s);
245 ostream_iterator(ostream_type& s, const charT* delimiter);
246 ostream_iterator(const ostream_iterator& x);
248 ostream_iterator& operator=(const T& value);
250 ostream_iterator& operator*();
251 ostream_iterator& operator++();
252 ostream_iterator& operator++(int);
255 template<class charT, class traits = char_traits<charT> >
256 class istreambuf_iterator
257 : public iterator<input_iterator_tag, charT,
258 typename traits::off_type, unspecified,
262 typedef charT char_type;
263 typedef traits traits_type;
264 typedef typename traits::int_type int_type;
265 typedef basic_streambuf<charT,traits> streambuf_type;
266 typedef basic_istream<charT,traits> istream_type;
268 istreambuf_iterator() noexcept;
269 istreambuf_iterator(istream_type& s) noexcept;
270 istreambuf_iterator(streambuf_type* s) noexcept;
271 istreambuf_iterator(a-private-type) noexcept;
273 charT operator*() const;
274 pointer operator->() const;
275 istreambuf_iterator& operator++();
276 a-private-type operator++(int);
278 bool equal(const istreambuf_iterator& b) const;
281 template <class charT, class traits>
282 bool operator==(const istreambuf_iterator<charT,traits>& a,
283 const istreambuf_iterator<charT,traits>& b);
284 template <class charT, class traits>
285 bool operator!=(const istreambuf_iterator<charT,traits>& a,
286 const istreambuf_iterator<charT,traits>& b);
288 template <class charT, class traits = char_traits<charT> >
289 class ostreambuf_iterator
290 : public iterator<output_iterator_tag, void, void, void, void>
293 typedef charT char_type;
294 typedef traits traits_type;
295 typedef basic_streambuf<charT,traits> streambuf_type;
296 typedef basic_ostream<charT,traits> ostream_type;
298 ostreambuf_iterator(ostream_type& s) noexcept;
299 ostreambuf_iterator(streambuf_type* s) noexcept;
300 ostreambuf_iterator& operator=(charT c);
301 ostreambuf_iterator& operator*();
302 ostreambuf_iterator& operator++();
303 ostreambuf_iterator& operator++(int);
304 bool failed() const noexcept;
307 template <class C> auto begin(C& c) -> decltype(c.begin());
308 template <class C> auto begin(const C& c) -> decltype(c.begin());
309 template <class C> auto end(C& c) -> decltype(c.end());
310 template <class C> auto end(const C& c) -> decltype(c.end());
311 template <class T, size_t N> T* begin(T (&array)[N]);
312 template <class T, size_t N> T* end(T (&array)[N]);
314 template <class C> auto cbegin(const C& c) -> decltype(std::begin(c)); // C++14
315 template <class C> auto cend(const C& c) -> decltype(std::end(c)); // C++14
316 template <class C> auto rbegin(C& c) -> decltype(c.rbegin()); // C++14
317 template <class C> auto rbegin(const C& c) -> decltype(c.rbegin()); // C++14
318 template <class C> auto rend(C& c) -> decltype(c.rend()); // C++14
319 template <class C> auto rend(const C& c) -> decltype(c.rend()); // C++14
320 template <class E> reverse_iterator<const E*> rbegin(initializer_list<E> il); // C++14
321 template <class E> reverse_iterator<const E*> rend(initializer_list<E> il); // C++14
322 template <class T, size_t N> reverse_iterator<T*> rbegin(T (&array)[N]); // C++14
323 template <class T, size_t N> reverse_iterator<T*> rend(T (&array)[N]); // C++14
324 template <class C> auto crbegin(const C& c) -> decltype(std::rbegin(c)); // C++14
325 template <class C> auto crend(const C& c) -> decltype(std::rend(c)); // C++14
332 #include <__functional_base>
333 #include <type_traits>
336 #include <initializer_list>
338 #include <Availability.h>
344 # define _LIBCPP_ASSERT(x, m) ((void)0)
347 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
348 #pragma GCC system_header
351 _LIBCPP_BEGIN_NAMESPACE_STD
353 struct _LIBCPP_TYPE_VIS_ONLY input_iterator_tag {};
354 struct _LIBCPP_TYPE_VIS_ONLY output_iterator_tag {};
355 struct _LIBCPP_TYPE_VIS_ONLY forward_iterator_tag : public input_iterator_tag {};
356 struct _LIBCPP_TYPE_VIS_ONLY bidirectional_iterator_tag : public forward_iterator_tag {};
357 struct _LIBCPP_TYPE_VIS_ONLY random_access_iterator_tag : public bidirectional_iterator_tag {};
360 struct __has_iterator_category
363 struct __two {char __lx; char __lxx;};
364 template <class _Up> static __two __test(...);
365 template <class _Up> static char __test(typename _Up::iterator_category* = 0);
367 static const bool value = sizeof(__test<_Tp>(0)) == 1;
370 template <class _Iter, bool> struct __iterator_traits_impl {};
372 template <class _Iter>
373 struct __iterator_traits_impl<_Iter, true>
375 typedef typename _Iter::difference_type difference_type;
376 typedef typename _Iter::value_type value_type;
377 typedef typename _Iter::pointer pointer;
378 typedef typename _Iter::reference reference;
379 typedef typename _Iter::iterator_category iterator_category;
382 template <class _Iter, bool> struct __iterator_traits {};
384 template <class _Iter>
385 struct __iterator_traits<_Iter, true>
386 : __iterator_traits_impl
389 is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value ||
390 is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value
394 // iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category
395 // exists. Else iterator_traits<Iterator> will be an empty class. This is a
396 // conforming extension which allows some programs to compile and behave as
397 // the client expects instead of failing at compile time.
399 template <class _Iter>
400 struct _LIBCPP_TYPE_VIS_ONLY iterator_traits
401 : __iterator_traits<_Iter, __has_iterator_category<_Iter>::value> {};
404 struct _LIBCPP_TYPE_VIS_ONLY iterator_traits<_Tp*>
406 typedef ptrdiff_t difference_type;
407 typedef typename remove_const<_Tp>::type value_type;
408 typedef _Tp* pointer;
409 typedef _Tp& reference;
410 typedef random_access_iterator_tag iterator_category;
413 template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value>
414 struct __has_iterator_category_convertible_to
415 : public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value>
418 template <class _Tp, class _Up>
419 struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {};
422 struct __is_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {};
425 struct __is_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {};
428 struct __is_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {};
431 struct __is_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {};
433 template<class _Category, class _Tp, class _Distance = ptrdiff_t,
434 class _Pointer = _Tp*, class _Reference = _Tp&>
435 struct _LIBCPP_TYPE_VIS_ONLY iterator
437 typedef _Tp value_type;
438 typedef _Distance difference_type;
439 typedef _Pointer pointer;
440 typedef _Reference reference;
441 typedef _Category iterator_category;
444 template <class _InputIter>
445 inline _LIBCPP_INLINE_VISIBILITY
446 void __advance(_InputIter& __i,
447 typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag)
449 for (; __n > 0; --__n)
453 template <class _BiDirIter>
454 inline _LIBCPP_INLINE_VISIBILITY
455 void __advance(_BiDirIter& __i,
456 typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag)
459 for (; __n > 0; --__n)
462 for (; __n < 0; ++__n)
466 template <class _RandIter>
467 inline _LIBCPP_INLINE_VISIBILITY
468 void __advance(_RandIter& __i,
469 typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag)
474 template <class _InputIter>
475 inline _LIBCPP_INLINE_VISIBILITY
476 void advance(_InputIter& __i,
477 typename iterator_traits<_InputIter>::difference_type __n)
479 __advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category());
482 template <class _InputIter>
483 inline _LIBCPP_INLINE_VISIBILITY
484 typename iterator_traits<_InputIter>::difference_type
485 __distance(_InputIter __first, _InputIter __last, input_iterator_tag)
487 typename iterator_traits<_InputIter>::difference_type __r(0);
488 for (; __first != __last; ++__first)
493 template <class _RandIter>
494 inline _LIBCPP_INLINE_VISIBILITY
495 typename iterator_traits<_RandIter>::difference_type
496 __distance(_RandIter __first, _RandIter __last, random_access_iterator_tag)
498 return __last - __first;
501 template <class _InputIter>
502 inline _LIBCPP_INLINE_VISIBILITY
503 typename iterator_traits<_InputIter>::difference_type
504 distance(_InputIter __first, _InputIter __last)
506 return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category());
509 template <class _ForwardIter>
510 inline _LIBCPP_INLINE_VISIBILITY
512 next(_ForwardIter __x,
513 typename iterator_traits<_ForwardIter>::difference_type __n = 1,
514 typename enable_if<__is_forward_iterator<_ForwardIter>::value>::type* = 0)
516 _VSTD::advance(__x, __n);
520 template <class _BidiretionalIter>
521 inline _LIBCPP_INLINE_VISIBILITY
523 prev(_BidiretionalIter __x,
524 typename iterator_traits<_BidiretionalIter>::difference_type __n = 1,
525 typename enable_if<__is_bidirectional_iterator<_BidiretionalIter>::value>::type* = 0)
527 _VSTD::advance(__x, -__n);
531 template <class _Iter>
532 class _LIBCPP_TYPE_VIS_ONLY reverse_iterator
533 : public iterator<typename iterator_traits<_Iter>::iterator_category,
534 typename iterator_traits<_Iter>::value_type,
535 typename iterator_traits<_Iter>::difference_type,
536 typename iterator_traits<_Iter>::pointer,
537 typename iterator_traits<_Iter>::reference>
540 mutable _Iter __t; // no longer used as of LWG #2360, not removed due to ABI break
544 typedef _Iter iterator_type;
545 typedef typename iterator_traits<_Iter>::difference_type difference_type;
546 typedef typename iterator_traits<_Iter>::reference reference;
547 typedef typename iterator_traits<_Iter>::pointer pointer;
549 _LIBCPP_INLINE_VISIBILITY reverse_iterator() : current() {}
550 _LIBCPP_INLINE_VISIBILITY explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {}
551 template <class _Up> _LIBCPP_INLINE_VISIBILITY reverse_iterator(const reverse_iterator<_Up>& __u)
552 : __t(__u.base()), current(__u.base()) {}
553 _LIBCPP_INLINE_VISIBILITY _Iter base() const {return current;}
554 _LIBCPP_INLINE_VISIBILITY reference operator*() const {_Iter __tmp = current; return *--__tmp;}
555 _LIBCPP_INLINE_VISIBILITY pointer operator->() const {return _VSTD::addressof(operator*());}
556 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator++() {--current; return *this;}
557 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator++(int)
558 {reverse_iterator __tmp(*this); --current; return __tmp;}
559 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator--() {++current; return *this;}
560 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator--(int)
561 {reverse_iterator __tmp(*this); ++current; return __tmp;}
562 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator+ (difference_type __n) const
563 {return reverse_iterator(current - __n);}
564 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator+=(difference_type __n)
565 {current -= __n; return *this;}
566 _LIBCPP_INLINE_VISIBILITY reverse_iterator operator- (difference_type __n) const
567 {return reverse_iterator(current + __n);}
568 _LIBCPP_INLINE_VISIBILITY reverse_iterator& operator-=(difference_type __n)
569 {current += __n; return *this;}
570 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const
571 {return current[-__n-1];}
574 template <class _Iter1, class _Iter2>
575 inline _LIBCPP_INLINE_VISIBILITY
577 operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
579 return __x.base() == __y.base();
582 template <class _Iter1, class _Iter2>
583 inline _LIBCPP_INLINE_VISIBILITY
585 operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
587 return __x.base() > __y.base();
590 template <class _Iter1, class _Iter2>
591 inline _LIBCPP_INLINE_VISIBILITY
593 operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
595 return __x.base() != __y.base();
598 template <class _Iter1, class _Iter2>
599 inline _LIBCPP_INLINE_VISIBILITY
601 operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
603 return __x.base() < __y.base();
606 template <class _Iter1, class _Iter2>
607 inline _LIBCPP_INLINE_VISIBILITY
609 operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
611 return __x.base() <= __y.base();
614 template <class _Iter1, class _Iter2>
615 inline _LIBCPP_INLINE_VISIBILITY
617 operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
619 return __x.base() >= __y.base();
622 template <class _Iter1, class _Iter2>
623 inline _LIBCPP_INLINE_VISIBILITY
624 typename reverse_iterator<_Iter1>::difference_type
625 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
627 return __y.base() - __x.base();
630 template <class _Iter>
631 inline _LIBCPP_INLINE_VISIBILITY
632 reverse_iterator<_Iter>
633 operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x)
635 return reverse_iterator<_Iter>(__x.base() - __n);
638 #if _LIBCPP_STD_VER > 11
639 template <class _Iter>
640 inline _LIBCPP_INLINE_VISIBILITY
641 reverse_iterator<_Iter> make_reverse_iterator(_Iter __i)
643 return reverse_iterator<_Iter>(__i);
647 template <class _Container>
648 class _LIBCPP_TYPE_VIS_ONLY back_insert_iterator
649 : public iterator<output_iterator_tag,
653 back_insert_iterator<_Container>&>
656 _Container* container;
658 typedef _Container container_type;
660 _LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
661 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_)
662 {container->push_back(__value_); return *this;}
663 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
664 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_)
665 {container->push_back(_VSTD::move(__value_)); return *this;}
666 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
667 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;}
668 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;}
669 _LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;}
672 template <class _Container>
673 inline _LIBCPP_INLINE_VISIBILITY
674 back_insert_iterator<_Container>
675 back_inserter(_Container& __x)
677 return back_insert_iterator<_Container>(__x);
680 template <class _Container>
681 class _LIBCPP_TYPE_VIS_ONLY front_insert_iterator
682 : public iterator<output_iterator_tag,
686 front_insert_iterator<_Container>&>
689 _Container* container;
691 typedef _Container container_type;
693 _LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
694 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_)
695 {container->push_front(__value_); return *this;}
696 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
697 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_)
698 {container->push_front(_VSTD::move(__value_)); return *this;}
699 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
700 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;}
701 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;}
702 _LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;}
705 template <class _Container>
706 inline _LIBCPP_INLINE_VISIBILITY
707 front_insert_iterator<_Container>
708 front_inserter(_Container& __x)
710 return front_insert_iterator<_Container>(__x);
713 template <class _Container>
714 class _LIBCPP_TYPE_VIS_ONLY insert_iterator
715 : public iterator<output_iterator_tag,
719 insert_iterator<_Container>&>
722 _Container* container;
723 typename _Container::iterator iter;
725 typedef _Container container_type;
727 _LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i)
728 : container(_VSTD::addressof(__x)), iter(__i) {}
729 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_)
730 {iter = container->insert(iter, __value_); ++iter; return *this;}
731 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
732 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_)
733 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;}
734 #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
735 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;}
736 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;}
737 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;}
740 template <class _Container>
741 inline _LIBCPP_INLINE_VISIBILITY
742 insert_iterator<_Container>
743 inserter(_Container& __x, typename _Container::iterator __i)
745 return insert_iterator<_Container>(__x, __i);
748 template <class _Tp, class _CharT = char,
749 class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t>
750 class _LIBCPP_TYPE_VIS_ONLY istream_iterator
751 : public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&>
754 typedef _CharT char_type;
755 typedef _Traits traits_type;
756 typedef basic_istream<_CharT,_Traits> istream_type;
758 istream_type* __in_stream_;
761 _LIBCPP_INLINE_VISIBILITY istream_iterator() : __in_stream_(0) {}
762 _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(&__s)
764 if (!(*__in_stream_ >> __value_))
768 _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;}
769 _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return &(operator*());}
770 _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++()
772 if (!(*__in_stream_ >> __value_))
776 _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int)
777 {istream_iterator __t(*this); ++(*this); return __t;}
779 friend _LIBCPP_INLINE_VISIBILITY
780 bool operator==(const istream_iterator& __x, const istream_iterator& __y)
781 {return __x.__in_stream_ == __y.__in_stream_;}
783 friend _LIBCPP_INLINE_VISIBILITY
784 bool operator!=(const istream_iterator& __x, const istream_iterator& __y)
785 {return !(__x == __y);}
788 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> >
789 class _LIBCPP_TYPE_VIS_ONLY ostream_iterator
790 : public iterator<output_iterator_tag, void, void, void, void>
793 typedef _CharT char_type;
794 typedef _Traits traits_type;
795 typedef basic_ostream<_CharT,_Traits> ostream_type;
797 ostream_type* __out_stream_;
798 const char_type* __delim_;
800 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s)
801 : __out_stream_(&__s), __delim_(0) {}
802 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter)
803 : __out_stream_(&__s), __delim_(__delimiter) {}
804 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_)
806 *__out_stream_ << __value_;
808 *__out_stream_ << __delim_;
812 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;}
813 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;}
814 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;}
817 template<class _CharT, class _Traits>
818 class _LIBCPP_TYPE_VIS_ONLY istreambuf_iterator
819 : public iterator<input_iterator_tag, _CharT,
820 typename _Traits::off_type, _CharT*,
824 typedef _CharT char_type;
825 typedef _Traits traits_type;
826 typedef typename _Traits::int_type int_type;
827 typedef basic_streambuf<_CharT,_Traits> streambuf_type;
828 typedef basic_istream<_CharT,_Traits> istream_type;
830 mutable streambuf_type* __sbuf_;
835 streambuf_type* __sbuf_;
836 _LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s)
837 : __keep_(__c), __sbuf_(__s) {}
838 friend class istreambuf_iterator;
840 _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;}
843 _LIBCPP_INLINE_VISIBILITY
844 bool __test_for_eof() const
846 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof()))
851 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(0) {}
852 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT
853 : __sbuf_(__s.rdbuf()) {}
854 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT
856 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT
857 : __sbuf_(__p.__sbuf_) {}
859 _LIBCPP_INLINE_VISIBILITY char_type operator*() const
860 {return static_cast<char_type>(__sbuf_->sgetc());}
861 _LIBCPP_INLINE_VISIBILITY char_type* operator->() const {return nullptr;}
862 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++()
867 _LIBCPP_INLINE_VISIBILITY __proxy operator++(int)
869 return __proxy(__sbuf_->sbumpc(), __sbuf_);
872 _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const
873 {return __test_for_eof() == __b.__test_for_eof();}
876 template <class _CharT, class _Traits>
877 inline _LIBCPP_INLINE_VISIBILITY
878 bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a,
879 const istreambuf_iterator<_CharT,_Traits>& __b)
880 {return __a.equal(__b);}
882 template <class _CharT, class _Traits>
883 inline _LIBCPP_INLINE_VISIBILITY
884 bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a,
885 const istreambuf_iterator<_CharT,_Traits>& __b)
886 {return !__a.equal(__b);}
888 template <class _CharT, class _Traits>
889 class _LIBCPP_TYPE_VIS_ONLY ostreambuf_iterator
890 : public iterator<output_iterator_tag, void, void, void, void>
893 typedef _CharT char_type;
894 typedef _Traits traits_type;
895 typedef basic_streambuf<_CharT,_Traits> streambuf_type;
896 typedef basic_ostream<_CharT,_Traits> ostream_type;
898 streambuf_type* __sbuf_;
900 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT
901 : __sbuf_(__s.rdbuf()) {}
902 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT
904 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c)
906 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof()))
910 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;}
911 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;}
912 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;}
913 _LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == 0;}
915 #if !defined(__APPLE__) || \
916 (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_8) || \
917 (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0)
919 template <class _Ch, class _Tr>
922 ostreambuf_iterator<_Ch, _Tr>
923 __pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s,
924 const _Ch* __ob, const _Ch* __op, const _Ch* __oe,
925 ios_base& __iob, _Ch __fl);
929 template <class _Iter>
930 class _LIBCPP_TYPE_VIS_ONLY move_iterator
935 typedef _Iter iterator_type;
936 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
937 typedef typename iterator_traits<iterator_type>::value_type value_type;
938 typedef typename iterator_traits<iterator_type>::difference_type difference_type;
939 typedef typename iterator_traits<iterator_type>::pointer pointer;
940 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
941 typedef value_type&& reference;
943 typedef typename iterator_traits<iterator_type>::reference reference;
946 _LIBCPP_INLINE_VISIBILITY move_iterator() : __i() {}
947 _LIBCPP_INLINE_VISIBILITY explicit move_iterator(_Iter __x) : __i(__x) {}
948 template <class _Up> _LIBCPP_INLINE_VISIBILITY move_iterator(const move_iterator<_Up>& __u)
950 _LIBCPP_INLINE_VISIBILITY _Iter base() const {return __i;}
951 _LIBCPP_INLINE_VISIBILITY reference operator*() const {
952 return static_cast<reference>(*__i);
954 _LIBCPP_INLINE_VISIBILITY pointer operator->() const {
955 typename iterator_traits<iterator_type>::reference __ref = *__i;
958 _LIBCPP_INLINE_VISIBILITY move_iterator& operator++() {++__i; return *this;}
959 _LIBCPP_INLINE_VISIBILITY move_iterator operator++(int)
960 {move_iterator __tmp(*this); ++__i; return __tmp;}
961 _LIBCPP_INLINE_VISIBILITY move_iterator& operator--() {--__i; return *this;}
962 _LIBCPP_INLINE_VISIBILITY move_iterator operator--(int)
963 {move_iterator __tmp(*this); --__i; return __tmp;}
964 _LIBCPP_INLINE_VISIBILITY move_iterator operator+ (difference_type __n) const
965 {return move_iterator(__i + __n);}
966 _LIBCPP_INLINE_VISIBILITY move_iterator& operator+=(difference_type __n)
967 {__i += __n; return *this;}
968 _LIBCPP_INLINE_VISIBILITY move_iterator operator- (difference_type __n) const
969 {return move_iterator(__i - __n);}
970 _LIBCPP_INLINE_VISIBILITY move_iterator& operator-=(difference_type __n)
971 {__i -= __n; return *this;}
972 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const
974 return static_cast<reference>(__i[__n]);
978 template <class _Iter1, class _Iter2>
979 inline _LIBCPP_INLINE_VISIBILITY
981 operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
983 return __x.base() == __y.base();
986 template <class _Iter1, class _Iter2>
987 inline _LIBCPP_INLINE_VISIBILITY
989 operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
991 return __x.base() < __y.base();
994 template <class _Iter1, class _Iter2>
995 inline _LIBCPP_INLINE_VISIBILITY
997 operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
999 return __x.base() != __y.base();
1002 template <class _Iter1, class _Iter2>
1003 inline _LIBCPP_INLINE_VISIBILITY
1005 operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1007 return __x.base() > __y.base();
1010 template <class _Iter1, class _Iter2>
1011 inline _LIBCPP_INLINE_VISIBILITY
1013 operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1015 return __x.base() >= __y.base();
1018 template <class _Iter1, class _Iter2>
1019 inline _LIBCPP_INLINE_VISIBILITY
1021 operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1023 return __x.base() <= __y.base();
1026 template <class _Iter1, class _Iter2>
1027 inline _LIBCPP_INLINE_VISIBILITY
1028 typename move_iterator<_Iter1>::difference_type
1029 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1031 return __x.base() - __y.base();
1034 template <class _Iter>
1035 inline _LIBCPP_INLINE_VISIBILITY
1036 move_iterator<_Iter>
1037 operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x)
1039 return move_iterator<_Iter>(__x.base() + __n);
1042 template <class _Iter>
1043 inline _LIBCPP_INLINE_VISIBILITY
1044 move_iterator<_Iter>
1045 make_move_iterator(_Iter __i)
1047 return move_iterator<_Iter>(__i);
1052 template <class _Iter> class __wrap_iter;
1054 template <class _Iter1, class _Iter2>
1055 _LIBCPP_INLINE_VISIBILITY
1057 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1059 template <class _Iter1, class _Iter2>
1060 _LIBCPP_INLINE_VISIBILITY
1062 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1064 template <class _Iter1, class _Iter2>
1065 _LIBCPP_INLINE_VISIBILITY
1067 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1069 template <class _Iter1, class _Iter2>
1070 _LIBCPP_INLINE_VISIBILITY
1072 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1074 template <class _Iter1, class _Iter2>
1075 _LIBCPP_INLINE_VISIBILITY
1077 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1079 template <class _Iter1, class _Iter2>
1080 _LIBCPP_INLINE_VISIBILITY
1082 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1084 template <class _Iter1, class _Iter2>
1085 _LIBCPP_INLINE_VISIBILITY
1086 typename __wrap_iter<_Iter1>::difference_type
1087 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1089 template <class _Iter>
1090 _LIBCPP_INLINE_VISIBILITY
1092 operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT;
1094 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY copy(_Ip, _Ip, _Op);
1095 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY copy_backward(_B1, _B1, _B2);
1096 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY move(_Ip, _Ip, _Op);
1097 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY move_backward(_B1, _B1, _B2);
1099 template <class _Tp>
1100 _LIBCPP_INLINE_VISIBILITY
1103 is_trivially_copy_assignable<_Tp>::value,
1106 __unwrap_iter(__wrap_iter<_Tp*>);
1108 template <class _Iter>
1112 typedef _Iter iterator_type;
1113 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
1114 typedef typename iterator_traits<iterator_type>::value_type value_type;
1115 typedef typename iterator_traits<iterator_type>::difference_type difference_type;
1116 typedef typename iterator_traits<iterator_type>::pointer pointer;
1117 typedef typename iterator_traits<iterator_type>::reference reference;
1121 _LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT
1122 #if _LIBCPP_STD_VER > 11
1126 #if _LIBCPP_DEBUG_LEVEL >= 2
1127 __get_db()->__insert_i(this);
1130 template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u,
1131 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT
1134 #if _LIBCPP_DEBUG_LEVEL >= 2
1135 __get_db()->__iterator_copy(this, &__u);
1138 #if _LIBCPP_DEBUG_LEVEL >= 2
1139 _LIBCPP_INLINE_VISIBILITY
1140 __wrap_iter(const __wrap_iter& __x)
1143 __get_db()->__iterator_copy(this, &__x);
1145 _LIBCPP_INLINE_VISIBILITY
1146 __wrap_iter& operator=(const __wrap_iter& __x)
1150 __get_db()->__iterator_copy(this, &__x);
1155 _LIBCPP_INLINE_VISIBILITY
1158 __get_db()->__erase_i(this);
1161 _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT
1163 #if _LIBCPP_DEBUG_LEVEL >= 2
1164 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
1165 "Attempted to dereference a non-dereferenceable iterator");
1169 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT
1171 #if _LIBCPP_DEBUG_LEVEL >= 2
1172 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
1173 "Attempted to dereference a non-dereferenceable iterator");
1175 return (pointer)&reinterpret_cast<const volatile char&>(*__i);
1177 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT
1179 #if _LIBCPP_DEBUG_LEVEL >= 2
1180 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
1181 "Attempted to increment non-incrementable iterator");
1186 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT
1187 {__wrap_iter __tmp(*this); ++(*this); return __tmp;}
1188 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT
1190 #if _LIBCPP_DEBUG_LEVEL >= 2
1191 _LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
1192 "Attempted to decrement non-decrementable iterator");
1197 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT
1198 {__wrap_iter __tmp(*this); --(*this); return __tmp;}
1199 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT
1200 {__wrap_iter __w(*this); __w += __n; return __w;}
1201 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT
1203 #if _LIBCPP_DEBUG_LEVEL >= 2
1204 _LIBCPP_ASSERT(__get_const_db()->__addable(this, __n),
1205 "Attempted to add/subtract iterator outside of valid range");
1210 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT
1211 {return *this + (-__n);}
1212 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT
1213 {*this += -__n; return *this;}
1214 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT
1216 #if _LIBCPP_DEBUG_LEVEL >= 2
1217 _LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n),
1218 "Attempted to subscript iterator outside of valid range");
1223 _LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT {return __i;}
1226 #if _LIBCPP_DEBUG_LEVEL >= 2
1227 _LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x)
1229 __get_db()->__insert_ic(this, __p);
1232 _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT : __i(__x) {}
1235 template <class _Up> friend class __wrap_iter;
1236 template <class _CharT, class _Traits, class _Alloc> friend class basic_string;
1237 template <class _Tp, class _Alloc> friend class vector;
1239 template <class _Iter1, class _Iter2>
1242 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1244 template <class _Iter1, class _Iter2>
1247 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1249 template <class _Iter1, class _Iter2>
1252 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1254 template <class _Iter1, class _Iter2>
1257 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1259 template <class _Iter1, class _Iter2>
1262 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1264 template <class _Iter1, class _Iter2>
1267 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1269 template <class _Iter1, class _Iter2>
1271 typename __wrap_iter<_Iter1>::difference_type
1272 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
1274 template <class _Iter1>
1277 operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT;
1279 template <class _Ip, class _Op> friend _Op copy(_Ip, _Ip, _Op);
1280 template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2);
1281 template <class _Ip, class _Op> friend _Op move(_Ip, _Ip, _Op);
1282 template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2);
1284 template <class _Tp>
1288 is_trivially_copy_assignable<_Tp>::value,
1291 __unwrap_iter(__wrap_iter<_Tp*>);
1294 template <class _Iter1, class _Iter2>
1295 inline _LIBCPP_INLINE_VISIBILITY
1297 operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1299 return __x.base() == __y.base();
1302 template <class _Iter1, class _Iter2>
1303 inline _LIBCPP_INLINE_VISIBILITY
1305 operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1307 #if _LIBCPP_DEBUG_LEVEL >= 2
1308 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
1309 "Attempted to compare incomparable iterators");
1311 return __x.base() < __y.base();
1314 template <class _Iter1, class _Iter2>
1315 inline _LIBCPP_INLINE_VISIBILITY
1317 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1319 return !(__x == __y);
1322 template <class _Iter1, class _Iter2>
1323 inline _LIBCPP_INLINE_VISIBILITY
1325 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1330 template <class _Iter1, class _Iter2>
1331 inline _LIBCPP_INLINE_VISIBILITY
1333 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1335 return !(__x < __y);
1338 template <class _Iter1, class _Iter2>
1339 inline _LIBCPP_INLINE_VISIBILITY
1341 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1343 return !(__y < __x);
1346 template <class _Iter1>
1347 inline _LIBCPP_INLINE_VISIBILITY
1349 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
1351 return !(__x == __y);
1354 template <class _Iter1>
1355 inline _LIBCPP_INLINE_VISIBILITY
1357 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
1362 template <class _Iter1>
1363 inline _LIBCPP_INLINE_VISIBILITY
1365 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
1367 return !(__x < __y);
1370 template <class _Iter1>
1371 inline _LIBCPP_INLINE_VISIBILITY
1373 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
1375 return !(__y < __x);
1378 template <class _Iter1, class _Iter2>
1379 inline _LIBCPP_INLINE_VISIBILITY
1380 typename __wrap_iter<_Iter1>::difference_type
1381 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
1383 #if _LIBCPP_DEBUG_LEVEL >= 2
1384 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
1385 "Attempted to subtract incompatible iterators");
1387 return __x.base() - __y.base();
1390 template <class _Iter>
1391 inline _LIBCPP_INLINE_VISIBILITY
1393 operator+(typename __wrap_iter<_Iter>::difference_type __n,
1394 __wrap_iter<_Iter> __x) _NOEXCEPT
1400 template <class _Tp, size_t _Np>
1401 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1403 begin(_Tp (&__array)[_Np])
1408 template <class _Tp, size_t _Np>
1409 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1411 end(_Tp (&__array)[_Np])
1413 return __array + _Np;
1416 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN)
1418 template <class _Cp>
1419 inline _LIBCPP_INLINE_VISIBILITY
1421 begin(_Cp& __c) -> decltype(__c.begin())
1426 template <class _Cp>
1427 inline _LIBCPP_INLINE_VISIBILITY
1429 begin(const _Cp& __c) -> decltype(__c.begin())
1434 template <class _Cp>
1435 inline _LIBCPP_INLINE_VISIBILITY
1437 end(_Cp& __c) -> decltype(__c.end())
1442 template <class _Cp>
1443 inline _LIBCPP_INLINE_VISIBILITY
1445 end(const _Cp& __c) -> decltype(__c.end())
1450 #if _LIBCPP_STD_VER > 11
1452 template <class _Tp, size_t _Np>
1453 inline _LIBCPP_INLINE_VISIBILITY
1454 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np])
1456 return reverse_iterator<_Tp*>(__array + _Np);
1459 template <class _Tp, size_t _Np>
1460 inline _LIBCPP_INLINE_VISIBILITY
1461 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np])
1463 return reverse_iterator<_Tp*>(__array);
1466 template <class _Ep>
1467 inline _LIBCPP_INLINE_VISIBILITY
1468 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il)
1470 return reverse_iterator<const _Ep*>(__il.end());
1473 template <class _Ep>
1474 inline _LIBCPP_INLINE_VISIBILITY
1475 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il)
1477 return reverse_iterator<const _Ep*>(__il.begin());
1480 template <class _Cp>
1481 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1482 auto cbegin(const _Cp& __c) -> decltype(begin(__c))
1487 template <class _Cp>
1488 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1489 auto cend(const _Cp& __c) -> decltype(end(__c))
1494 template <class _Cp>
1495 inline _LIBCPP_INLINE_VISIBILITY
1496 auto rbegin(_Cp& __c) -> decltype(__c.rbegin())
1498 return __c.rbegin();
1501 template <class _Cp>
1502 inline _LIBCPP_INLINE_VISIBILITY
1503 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin())
1505 return __c.rbegin();
1508 template <class _Cp>
1509 inline _LIBCPP_INLINE_VISIBILITY
1510 auto rend(_Cp& __c) -> decltype(__c.rend())
1515 template <class _Cp>
1516 inline _LIBCPP_INLINE_VISIBILITY
1517 auto rend(const _Cp& __c) -> decltype(__c.rend())
1522 template <class _Cp>
1523 inline _LIBCPP_INLINE_VISIBILITY
1524 auto crbegin(const _Cp& __c) -> decltype(rbegin(__c))
1529 template <class _Cp>
1530 inline _LIBCPP_INLINE_VISIBILITY
1531 auto crend(const _Cp& __c) -> decltype(rend(__c))
1539 #else // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN)
1541 template <class _Cp>
1542 inline _LIBCPP_INLINE_VISIBILITY
1543 typename _Cp::iterator
1549 template <class _Cp>
1550 inline _LIBCPP_INLINE_VISIBILITY
1551 typename _Cp::const_iterator
1552 begin(const _Cp& __c)
1557 template <class _Cp>
1558 inline _LIBCPP_INLINE_VISIBILITY
1559 typename _Cp::iterator
1565 template <class _Cp>
1566 inline _LIBCPP_INLINE_VISIBILITY
1567 typename _Cp::const_iterator
1573 #endif // !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_TRAILING_RETURN)
1575 _LIBCPP_END_NAMESPACE_STD
1577 #endif // _LIBCPP_ITERATOR