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;
92 constexpr reverse_iterator();
93 constexpr explicit reverse_iterator(Iterator x);
94 template <class U> constexpr reverse_iterator(const reverse_iterator<U>& u);
95 template <class U> constexpr reverse_iterator& operator=(const reverse_iterator<U>& u);
96 constexpr Iterator base() const;
97 constexpr reference operator*() const;
98 constexpr pointer operator->() const;
99 constexpr reverse_iterator& operator++();
100 constexpr reverse_iterator operator++(int);
101 constexpr reverse_iterator& operator--();
102 constexpr reverse_iterator operator--(int);
103 constexpr reverse_iterator operator+ (difference_type n) const;
104 constexpr reverse_iterator& operator+=(difference_type n);
105 constexpr reverse_iterator operator- (difference_type n) const;
106 constexpr reverse_iterator& operator-=(difference_type n);
107 constexpr reference operator[](difference_type n) const;
110 template <class Iterator1, class Iterator2>
111 constexpr bool // constexpr in C++17
112 operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
114 template <class Iterator1, class Iterator2>
115 constexpr bool // constexpr in C++17
116 operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
118 template <class Iterator1, class Iterator2>
119 constexpr bool // constexpr in C++17
120 operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
122 template <class Iterator1, class Iterator2>
123 constexpr bool // constexpr in C++17
124 operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
126 template <class Iterator1, class Iterator2>
127 constexpr bool // constexpr in C++17
128 operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
130 template <class Iterator1, class Iterator2>
131 constexpr bool // constexpr in C++17
132 operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y);
134 template <class Iterator1, class Iterator2>
136 operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y)
137 -> decltype(__y.base() - __x.base()); // constexpr in C++17
139 template <class Iterator>
140 constexpr reverse_iterator<Iterator>
141 operator+(typename reverse_iterator<Iterator>::difference_type n,
142 const reverse_iterator<Iterator>& x); // constexpr in C++17
144 template <class Iterator>
145 constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14, constexpr in C++17
147 template <class Container>
148 class back_insert_iterator
151 Container* container;
153 typedef Container container_type;
154 typedef void value_type;
155 typedef void difference_type;
156 typedef void reference;
157 typedef void pointer;
159 explicit back_insert_iterator(Container& x);
160 back_insert_iterator& operator=(const typename Container::value_type& value);
161 back_insert_iterator& operator*();
162 back_insert_iterator& operator++();
163 back_insert_iterator operator++(int);
166 template <class Container> back_insert_iterator<Container> back_inserter(Container& x);
168 template <class Container>
169 class front_insert_iterator
172 Container* container;
174 typedef Container container_type;
175 typedef void value_type;
176 typedef void difference_type;
177 typedef void reference;
178 typedef void pointer;
180 explicit front_insert_iterator(Container& x);
181 front_insert_iterator& operator=(const typename Container::value_type& value);
182 front_insert_iterator& operator*();
183 front_insert_iterator& operator++();
184 front_insert_iterator operator++(int);
187 template <class Container> front_insert_iterator<Container> front_inserter(Container& x);
189 template <class Container>
190 class insert_iterator
193 Container* container;
194 typename Container::iterator iter;
196 typedef Container container_type;
197 typedef void value_type;
198 typedef void difference_type;
199 typedef void reference;
200 typedef void pointer;
202 insert_iterator(Container& x, typename Container::iterator i);
203 insert_iterator& operator=(const typename Container::value_type& value);
204 insert_iterator& operator*();
205 insert_iterator& operator++();
206 insert_iterator& operator++(int);
209 template <class Container, class Iterator>
210 insert_iterator<Container> inserter(Container& x, Iterator i);
212 template <class Iterator>
213 class move_iterator {
215 typedef Iterator iterator_type;
216 typedef typename iterator_traits<Iterator>::difference_type difference_type;
217 typedef Iterator pointer;
218 typedef typename iterator_traits<Iterator>::value_type value_type;
219 typedef typename iterator_traits<Iterator>::iterator_category iterator_category;
220 typedef value_type&& reference;
222 constexpr move_iterator(); // all the constexprs are in C++17
223 constexpr explicit move_iterator(Iterator i);
225 constexpr move_iterator(const move_iterator<U>& u);
227 constexpr move_iterator& operator=(const move_iterator<U>& u);
228 constexpr iterator_type base() const;
229 constexpr reference operator*() const;
230 constexpr pointer operator->() const;
231 constexpr move_iterator& operator++();
232 constexpr move_iterator operator++(int);
233 constexpr move_iterator& operator--();
234 constexpr move_iterator operator--(int);
235 constexpr move_iterator operator+(difference_type n) const;
236 constexpr move_iterator& operator+=(difference_type n);
237 constexpr move_iterator operator-(difference_type n) const;
238 constexpr move_iterator& operator-=(difference_type n);
239 constexpr unspecified operator[](difference_type n) const;
241 Iterator current; // exposition only
244 template <class Iterator1, class Iterator2>
245 constexpr bool // constexpr in C++17
246 operator==(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
248 template <class Iterator1, class Iterator2>
249 constexpr bool // constexpr in C++17
250 operator!=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
252 template <class Iterator1, class Iterator2>
253 constexpr bool // constexpr in C++17
254 operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
256 template <class Iterator1, class Iterator2>
257 constexpr bool // constexpr in C++17
258 operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
260 template <class Iterator1, class Iterator2>
261 constexpr bool // constexpr in C++17
262 operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
264 template <class Iterator1, class Iterator2>
265 constexpr bool // constexpr in C++17
266 operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y);
268 template <class Iterator1, class Iterator2>
269 constexpr auto // constexpr in C++17
270 operator-(const move_iterator<Iterator1>& x,
271 const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base());
273 template <class Iterator>
274 constexpr move_iterator<Iterator> operator+( // constexpr in C++17
275 typename move_iterator<Iterator>::difference_type n,
276 const move_iterator<Iterator>& x);
278 template <class Iterator> // constexpr in C++17
279 constexpr move_iterator<Iterator> make_move_iterator(const Iterator& i);
282 template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t>
283 class istream_iterator
284 : public iterator<input_iterator_tag, T, Distance, const T*, const T&>
287 typedef charT char_type;
288 typedef traits traits_type;
289 typedef basic_istream<charT,traits> istream_type;
291 constexpr istream_iterator();
292 istream_iterator(istream_type& s);
293 istream_iterator(const istream_iterator& x);
296 const T& operator*() const;
297 const T* operator->() const;
298 istream_iterator& operator++();
299 istream_iterator operator++(int);
302 template <class T, class charT, class traits, class Distance>
303 bool operator==(const istream_iterator<T,charT,traits,Distance>& x,
304 const istream_iterator<T,charT,traits,Distance>& y);
305 template <class T, class charT, class traits, class Distance>
306 bool operator!=(const istream_iterator<T,charT,traits,Distance>& x,
307 const istream_iterator<T,charT,traits,Distance>& y);
309 template <class T, class charT = char, class traits = char_traits<charT> >
310 class ostream_iterator
311 : public iterator<output_iterator_tag, void, void, void ,void>
314 typedef charT char_type;
315 typedef traits traits_type;
316 typedef basic_ostream<charT,traits> ostream_type;
318 ostream_iterator(ostream_type& s);
319 ostream_iterator(ostream_type& s, const charT* delimiter);
320 ostream_iterator(const ostream_iterator& x);
322 ostream_iterator& operator=(const T& value);
324 ostream_iterator& operator*();
325 ostream_iterator& operator++();
326 ostream_iterator& operator++(int);
329 template<class charT, class traits = char_traits<charT> >
330 class istreambuf_iterator
331 : public iterator<input_iterator_tag, charT,
332 typename traits::off_type, unspecified,
336 typedef charT char_type;
337 typedef traits traits_type;
338 typedef typename traits::int_type int_type;
339 typedef basic_streambuf<charT,traits> streambuf_type;
340 typedef basic_istream<charT,traits> istream_type;
342 istreambuf_iterator() noexcept;
343 istreambuf_iterator(istream_type& s) noexcept;
344 istreambuf_iterator(streambuf_type* s) noexcept;
345 istreambuf_iterator(a-private-type) noexcept;
347 charT operator*() const;
348 pointer operator->() const;
349 istreambuf_iterator& operator++();
350 a-private-type operator++(int);
352 bool equal(const istreambuf_iterator& b) const;
355 template <class charT, class traits>
356 bool operator==(const istreambuf_iterator<charT,traits>& a,
357 const istreambuf_iterator<charT,traits>& b);
358 template <class charT, class traits>
359 bool operator!=(const istreambuf_iterator<charT,traits>& a,
360 const istreambuf_iterator<charT,traits>& b);
362 template <class charT, class traits = char_traits<charT> >
363 class ostreambuf_iterator
364 : public iterator<output_iterator_tag, void, void, void, void>
367 typedef charT char_type;
368 typedef traits traits_type;
369 typedef basic_streambuf<charT,traits> streambuf_type;
370 typedef basic_ostream<charT,traits> ostream_type;
372 ostreambuf_iterator(ostream_type& s) noexcept;
373 ostreambuf_iterator(streambuf_type* s) noexcept;
374 ostreambuf_iterator& operator=(charT c);
375 ostreambuf_iterator& operator*();
376 ostreambuf_iterator& operator++();
377 ostreambuf_iterator& operator++(int);
378 bool failed() const noexcept;
381 template <class C> constexpr auto begin(C& c) -> decltype(c.begin());
382 template <class C> constexpr auto begin(const C& c) -> decltype(c.begin());
383 template <class C> constexpr auto end(C& c) -> decltype(c.end());
384 template <class C> constexpr auto end(const C& c) -> decltype(c.end());
385 template <class T, size_t N> constexpr T* begin(T (&array)[N]);
386 template <class T, size_t N> constexpr T* end(T (&array)[N]);
388 template <class C> auto constexpr cbegin(const C& c) -> decltype(std::begin(c)); // C++14
389 template <class C> auto constexpr cend(const C& c) -> decltype(std::end(c)); // C++14
390 template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin()); // C++14
391 template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin()); // C++14
392 template <class C> auto constexpr rend(C& c) -> decltype(c.rend()); // C++14
393 template <class C> constexpr auto rend(const C& c) -> decltype(c.rend()); // C++14
394 template <class E> reverse_iterator<const E*> constexpr rbegin(initializer_list<E> il); // C++14
395 template <class E> reverse_iterator<const E*> constexpr rend(initializer_list<E> il); // C++14
396 template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]); // C++14
397 template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]); // C++14
398 template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c)); // C++14
399 template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c)); // C++14
401 // 24.8, container access:
402 template <class C> constexpr auto size(const C& c) -> decltype(c.size()); // C++17
403 template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17
404 template <class C> constexpr auto empty(const C& c) -> decltype(c.empty()); // C++17
405 template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept; // C++17
406 template <class E> constexpr bool empty(initializer_list<E> il) noexcept; // C++17
407 template <class C> constexpr auto data(C& c) -> decltype(c.data()); // C++17
408 template <class C> constexpr auto data(const C& c) -> decltype(c.data()); // C++17
409 template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept; // C++17
410 template <class E> constexpr const E* data(initializer_list<E> il) noexcept; // C++17
417 #include <iosfwd> // for forward declarations of vector and string.
418 #include <__functional_base>
419 #include <type_traits>
421 #include <initializer_list>
423 #include <Availability.h>
428 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
429 #pragma GCC system_header
432 _LIBCPP_BEGIN_NAMESPACE_STD
434 struct _LIBCPP_TEMPLATE_VIS input_iterator_tag {};
435 struct _LIBCPP_TEMPLATE_VIS output_iterator_tag {};
436 struct _LIBCPP_TEMPLATE_VIS forward_iterator_tag : public input_iterator_tag {};
437 struct _LIBCPP_TEMPLATE_VIS bidirectional_iterator_tag : public forward_iterator_tag {};
438 struct _LIBCPP_TEMPLATE_VIS random_access_iterator_tag : public bidirectional_iterator_tag {};
441 struct __has_iterator_category
444 struct __two {char __lx; char __lxx;};
445 template <class _Up> static __two __test(...);
446 template <class _Up> static char __test(typename _Up::iterator_category* = 0);
448 static const bool value = sizeof(__test<_Tp>(0)) == 1;
451 template <class _Iter, bool> struct __iterator_traits_impl {};
453 template <class _Iter>
454 struct __iterator_traits_impl<_Iter, true>
456 typedef typename _Iter::difference_type difference_type;
457 typedef typename _Iter::value_type value_type;
458 typedef typename _Iter::pointer pointer;
459 typedef typename _Iter::reference reference;
460 typedef typename _Iter::iterator_category iterator_category;
463 template <class _Iter, bool> struct __iterator_traits {};
465 template <class _Iter>
466 struct __iterator_traits<_Iter, true>
467 : __iterator_traits_impl
470 is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value ||
471 is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value
475 // iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category
476 // exists. Else iterator_traits<Iterator> will be an empty class. This is a
477 // conforming extension which allows some programs to compile and behave as
478 // the client expects instead of failing at compile time.
480 template <class _Iter>
481 struct _LIBCPP_TEMPLATE_VIS iterator_traits
482 : __iterator_traits<_Iter, __has_iterator_category<_Iter>::value> {};
485 struct _LIBCPP_TEMPLATE_VIS iterator_traits<_Tp*>
487 typedef ptrdiff_t difference_type;
488 typedef typename remove_const<_Tp>::type value_type;
489 typedef _Tp* pointer;
490 typedef _Tp& reference;
491 typedef random_access_iterator_tag iterator_category;
494 template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value>
495 struct __has_iterator_category_convertible_to
496 : public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value>
499 template <class _Tp, class _Up>
500 struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {};
503 struct __is_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {};
506 struct __is_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {};
509 struct __is_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {};
512 struct __is_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {};
515 struct __is_exactly_input_iterator
516 : public integral_constant<bool,
517 __has_iterator_category_convertible_to<_Tp, input_iterator_tag>::value &&
518 !__has_iterator_category_convertible_to<_Tp, forward_iterator_tag>::value> {};
520 template<class _Category, class _Tp, class _Distance = ptrdiff_t,
521 class _Pointer = _Tp*, class _Reference = _Tp&>
522 struct _LIBCPP_TEMPLATE_VIS iterator
524 typedef _Tp value_type;
525 typedef _Distance difference_type;
526 typedef _Pointer pointer;
527 typedef _Reference reference;
528 typedef _Category iterator_category;
531 template <class _InputIter>
532 inline _LIBCPP_INLINE_VISIBILITY
533 void __advance(_InputIter& __i,
534 typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag)
536 for (; __n > 0; --__n)
540 template <class _BiDirIter>
541 inline _LIBCPP_INLINE_VISIBILITY
542 void __advance(_BiDirIter& __i,
543 typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag)
546 for (; __n > 0; --__n)
549 for (; __n < 0; ++__n)
553 template <class _RandIter>
554 inline _LIBCPP_INLINE_VISIBILITY
555 void __advance(_RandIter& __i,
556 typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag)
561 template <class _InputIter>
562 inline _LIBCPP_INLINE_VISIBILITY
563 void advance(_InputIter& __i,
564 typename iterator_traits<_InputIter>::difference_type __n)
566 __advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category());
569 template <class _InputIter>
570 inline _LIBCPP_INLINE_VISIBILITY
571 typename iterator_traits<_InputIter>::difference_type
572 __distance(_InputIter __first, _InputIter __last, input_iterator_tag)
574 typename iterator_traits<_InputIter>::difference_type __r(0);
575 for (; __first != __last; ++__first)
580 template <class _RandIter>
581 inline _LIBCPP_INLINE_VISIBILITY
582 typename iterator_traits<_RandIter>::difference_type
583 __distance(_RandIter __first, _RandIter __last, random_access_iterator_tag)
585 return __last - __first;
588 template <class _InputIter>
589 inline _LIBCPP_INLINE_VISIBILITY
590 typename iterator_traits<_InputIter>::difference_type
591 distance(_InputIter __first, _InputIter __last)
593 return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category());
596 template <class _InputIter>
597 inline _LIBCPP_INLINE_VISIBILITY
600 typename iterator_traits<_InputIter>::difference_type __n = 1,
601 typename enable_if<__is_input_iterator<_InputIter>::value>::type* = 0)
603 _VSTD::advance(__x, __n);
607 template <class _BidiretionalIter>
608 inline _LIBCPP_INLINE_VISIBILITY
610 prev(_BidiretionalIter __x,
611 typename iterator_traits<_BidiretionalIter>::difference_type __n = 1,
612 typename enable_if<__is_bidirectional_iterator<_BidiretionalIter>::value>::type* = 0)
614 _VSTD::advance(__x, -__n);
619 template <class _Tp, class = void>
620 struct __is_stashing_iterator : false_type {};
623 struct __is_stashing_iterator<_Tp, typename __void_t<typename _Tp::__stashing_iterator_tag>::type>
626 template <class _Iter>
627 class _LIBCPP_TEMPLATE_VIS reverse_iterator
628 : public iterator<typename iterator_traits<_Iter>::iterator_category,
629 typename iterator_traits<_Iter>::value_type,
630 typename iterator_traits<_Iter>::difference_type,
631 typename iterator_traits<_Iter>::pointer,
632 typename iterator_traits<_Iter>::reference>
635 /*mutable*/ _Iter __t; // no longer used as of LWG #2360, not removed due to ABI break
637 static_assert(!__is_stashing_iterator<_Iter>::value,
638 "The specified iterator type cannot be used with reverse_iterator; "
639 "Using stashing iterators with reverse_iterator causes undefined behavior");
644 typedef _Iter iterator_type;
645 typedef typename iterator_traits<_Iter>::difference_type difference_type;
646 typedef typename iterator_traits<_Iter>::reference reference;
647 typedef typename iterator_traits<_Iter>::pointer pointer;
649 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
650 reverse_iterator() : __t(), current() {}
651 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
652 explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {}
654 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
655 reverse_iterator(const reverse_iterator<_Up>& __u) : __t(__u.base()), current(__u.base()) {}
657 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
658 reverse_iterator& operator=(const reverse_iterator<_Up>& __u)
659 { __t = current = __u.base(); return *this; }
660 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
661 _Iter base() const {return current;}
662 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
663 reference operator*() const {_Iter __tmp = current; return *--__tmp;}
664 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
665 pointer operator->() const {return _VSTD::addressof(operator*());}
666 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
667 reverse_iterator& operator++() {--current; return *this;}
668 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
669 reverse_iterator operator++(int) {reverse_iterator __tmp(*this); --current; return __tmp;}
670 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
671 reverse_iterator& operator--() {++current; return *this;}
672 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
673 reverse_iterator operator--(int) {reverse_iterator __tmp(*this); ++current; return __tmp;}
674 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
675 reverse_iterator operator+ (difference_type __n) const {return reverse_iterator(current - __n);}
676 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
677 reverse_iterator& operator+=(difference_type __n) {current -= __n; return *this;}
678 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
679 reverse_iterator operator- (difference_type __n) const {return reverse_iterator(current + __n);}
680 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
681 reverse_iterator& operator-=(difference_type __n) {current += __n; return *this;}
682 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
683 reference operator[](difference_type __n) const {return *(*this + __n);}
686 template <class _Iter1, class _Iter2>
687 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
689 operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
691 return __x.base() == __y.base();
694 template <class _Iter1, class _Iter2>
695 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
697 operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
699 return __x.base() > __y.base();
702 template <class _Iter1, class _Iter2>
703 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
705 operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
707 return __x.base() != __y.base();
710 template <class _Iter1, class _Iter2>
711 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
713 operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
715 return __x.base() < __y.base();
718 template <class _Iter1, class _Iter2>
719 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
721 operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
723 return __x.base() <= __y.base();
726 template <class _Iter1, class _Iter2>
727 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
729 operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
731 return __x.base() >= __y.base();
734 #ifndef _LIBCPP_CXX03_LANG
735 template <class _Iter1, class _Iter2>
736 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
738 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
739 -> decltype(__y.base() - __x.base())
741 return __y.base() - __x.base();
744 template <class _Iter1, class _Iter2>
745 inline _LIBCPP_INLINE_VISIBILITY
746 typename reverse_iterator<_Iter1>::difference_type
747 operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
749 return __y.base() - __x.base();
753 template <class _Iter>
754 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
755 reverse_iterator<_Iter>
756 operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x)
758 return reverse_iterator<_Iter>(__x.base() - __n);
761 #if _LIBCPP_STD_VER > 11
762 template <class _Iter>
763 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
764 reverse_iterator<_Iter> make_reverse_iterator(_Iter __i)
766 return reverse_iterator<_Iter>(__i);
770 template <class _Container>
771 class _LIBCPP_TEMPLATE_VIS back_insert_iterator
772 : public iterator<output_iterator_tag,
779 _Container* container;
781 typedef _Container container_type;
783 _LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
784 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_)
785 {container->push_back(__value_); return *this;}
786 #ifndef _LIBCPP_CXX03_LANG
787 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_)
788 {container->push_back(_VSTD::move(__value_)); return *this;}
789 #endif // _LIBCPP_CXX03_LANG
790 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;}
791 _LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;}
792 _LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;}
795 template <class _Container>
796 inline _LIBCPP_INLINE_VISIBILITY
797 back_insert_iterator<_Container>
798 back_inserter(_Container& __x)
800 return back_insert_iterator<_Container>(__x);
803 template <class _Container>
804 class _LIBCPP_TEMPLATE_VIS front_insert_iterator
805 : public iterator<output_iterator_tag,
812 _Container* container;
814 typedef _Container container_type;
816 _LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
817 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_)
818 {container->push_front(__value_); return *this;}
819 #ifndef _LIBCPP_CXX03_LANG
820 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_)
821 {container->push_front(_VSTD::move(__value_)); return *this;}
822 #endif // _LIBCPP_CXX03_LANG
823 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;}
824 _LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;}
825 _LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;}
828 template <class _Container>
829 inline _LIBCPP_INLINE_VISIBILITY
830 front_insert_iterator<_Container>
831 front_inserter(_Container& __x)
833 return front_insert_iterator<_Container>(__x);
836 template <class _Container>
837 class _LIBCPP_TEMPLATE_VIS insert_iterator
838 : public iterator<output_iterator_tag,
845 _Container* container;
846 typename _Container::iterator iter;
848 typedef _Container container_type;
850 _LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i)
851 : container(_VSTD::addressof(__x)), iter(__i) {}
852 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_)
853 {iter = container->insert(iter, __value_); ++iter; return *this;}
854 #ifndef _LIBCPP_CXX03_LANG
855 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_)
856 {iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;}
857 #endif // _LIBCPP_CXX03_LANG
858 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;}
859 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;}
860 _LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;}
863 template <class _Container>
864 inline _LIBCPP_INLINE_VISIBILITY
865 insert_iterator<_Container>
866 inserter(_Container& __x, typename _Container::iterator __i)
868 return insert_iterator<_Container>(__x, __i);
871 template <class _Tp, class _CharT = char,
872 class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t>
873 class _LIBCPP_TEMPLATE_VIS istream_iterator
874 : public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&>
877 typedef _CharT char_type;
878 typedef _Traits traits_type;
879 typedef basic_istream<_CharT,_Traits> istream_type;
881 istream_type* __in_stream_;
884 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(0), __value_() {}
885 _LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(_VSTD::addressof(__s))
887 if (!(*__in_stream_ >> __value_))
891 _LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;}
892 _LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return _VSTD::addressof((operator*()));}
893 _LIBCPP_INLINE_VISIBILITY istream_iterator& operator++()
895 if (!(*__in_stream_ >> __value_))
899 _LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int)
900 {istream_iterator __t(*this); ++(*this); return __t;}
902 friend _LIBCPP_INLINE_VISIBILITY
903 bool operator==(const istream_iterator& __x, const istream_iterator& __y)
904 {return __x.__in_stream_ == __y.__in_stream_;}
906 friend _LIBCPP_INLINE_VISIBILITY
907 bool operator!=(const istream_iterator& __x, const istream_iterator& __y)
908 {return !(__x == __y);}
911 template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> >
912 class _LIBCPP_TEMPLATE_VIS ostream_iterator
913 : public iterator<output_iterator_tag, void, void, void, void>
916 typedef _CharT char_type;
917 typedef _Traits traits_type;
918 typedef basic_ostream<_CharT,_Traits> ostream_type;
920 ostream_type* __out_stream_;
921 const char_type* __delim_;
923 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT
924 : __out_stream_(_VSTD::addressof(__s)), __delim_(0) {}
925 _LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT
926 : __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {}
927 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_)
929 *__out_stream_ << __value_;
931 *__out_stream_ << __delim_;
935 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;}
936 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;}
937 _LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;}
940 template<class _CharT, class _Traits>
941 class _LIBCPP_TEMPLATE_VIS istreambuf_iterator
942 : public iterator<input_iterator_tag, _CharT,
943 typename _Traits::off_type, _CharT*,
947 typedef _CharT char_type;
948 typedef _Traits traits_type;
949 typedef typename _Traits::int_type int_type;
950 typedef basic_streambuf<_CharT,_Traits> streambuf_type;
951 typedef basic_istream<_CharT,_Traits> istream_type;
953 mutable streambuf_type* __sbuf_;
958 streambuf_type* __sbuf_;
959 _LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s)
960 : __keep_(__c), __sbuf_(__s) {}
961 friend class istreambuf_iterator;
963 _LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;}
966 _LIBCPP_INLINE_VISIBILITY
967 bool __test_for_eof() const
969 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof()))
974 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(0) {}
975 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT
976 : __sbuf_(__s.rdbuf()) {}
977 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT
979 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT
980 : __sbuf_(__p.__sbuf_) {}
982 _LIBCPP_INLINE_VISIBILITY char_type operator*() const
983 {return static_cast<char_type>(__sbuf_->sgetc());}
984 _LIBCPP_INLINE_VISIBILITY char_type* operator->() const {return nullptr;}
985 _LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++()
990 _LIBCPP_INLINE_VISIBILITY __proxy operator++(int)
992 return __proxy(__sbuf_->sbumpc(), __sbuf_);
995 _LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const
996 {return __test_for_eof() == __b.__test_for_eof();}
999 template <class _CharT, class _Traits>
1000 inline _LIBCPP_INLINE_VISIBILITY
1001 bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a,
1002 const istreambuf_iterator<_CharT,_Traits>& __b)
1003 {return __a.equal(__b);}
1005 template <class _CharT, class _Traits>
1006 inline _LIBCPP_INLINE_VISIBILITY
1007 bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a,
1008 const istreambuf_iterator<_CharT,_Traits>& __b)
1009 {return !__a.equal(__b);}
1011 template <class _CharT, class _Traits>
1012 class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator
1013 : public iterator<output_iterator_tag, void, void, void, void>
1016 typedef _CharT char_type;
1017 typedef _Traits traits_type;
1018 typedef basic_streambuf<_CharT,_Traits> streambuf_type;
1019 typedef basic_ostream<_CharT,_Traits> ostream_type;
1021 streambuf_type* __sbuf_;
1023 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT
1024 : __sbuf_(__s.rdbuf()) {}
1025 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT
1027 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c)
1029 if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof()))
1033 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;}
1034 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;}
1035 _LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;}
1036 _LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == 0;}
1038 #if !defined(__APPLE__) || \
1039 (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_8) || \
1040 (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0)
1042 template <class _Ch, class _Tr>
1045 ostreambuf_iterator<_Ch, _Tr>
1046 __pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s,
1047 const _Ch* __ob, const _Ch* __op, const _Ch* __oe,
1048 ios_base& __iob, _Ch __fl);
1052 template <class _Iter>
1053 class _LIBCPP_TEMPLATE_VIS move_iterator
1058 typedef _Iter iterator_type;
1059 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
1060 typedef typename iterator_traits<iterator_type>::value_type value_type;
1061 typedef typename iterator_traits<iterator_type>::difference_type difference_type;
1062 typedef iterator_type pointer;
1063 #ifndef _LIBCPP_CXX03_LANG
1064 typedef typename iterator_traits<iterator_type>::reference __reference;
1065 typedef typename conditional<
1066 is_reference<__reference>::value,
1067 typename remove_reference<__reference>::type&&,
1071 typedef typename iterator_traits<iterator_type>::reference reference;
1074 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1075 move_iterator() : __i() {}
1076 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1077 explicit move_iterator(_Iter __x) : __i(__x) {}
1078 template <class _Up>
1079 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1080 move_iterator(const move_iterator<_Up>& __u) : __i(__u.base()) {}
1081 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 _Iter base() const {return __i;}
1082 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1083 reference operator*() const { return static_cast<reference>(*__i); }
1084 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1085 pointer operator->() const { return __i;}
1086 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1087 move_iterator& operator++() {++__i; return *this;}
1088 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1089 move_iterator operator++(int) {move_iterator __tmp(*this); ++__i; return __tmp;}
1090 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1091 move_iterator& operator--() {--__i; return *this;}
1092 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1093 move_iterator operator--(int) {move_iterator __tmp(*this); --__i; return __tmp;}
1094 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1095 move_iterator operator+ (difference_type __n) const {return move_iterator(__i + __n);}
1096 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1097 move_iterator& operator+=(difference_type __n) {__i += __n; return *this;}
1098 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1099 move_iterator operator- (difference_type __n) const {return move_iterator(__i - __n);}
1100 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1101 move_iterator& operator-=(difference_type __n) {__i -= __n; return *this;}
1102 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1103 reference operator[](difference_type __n) const { return static_cast<reference>(__i[__n]); }
1106 template <class _Iter1, class _Iter2>
1107 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1109 operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1111 return __x.base() == __y.base();
1114 template <class _Iter1, class _Iter2>
1115 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1117 operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1119 return __x.base() < __y.base();
1122 template <class _Iter1, class _Iter2>
1123 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1125 operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1127 return __x.base() != __y.base();
1130 template <class _Iter1, class _Iter2>
1131 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1133 operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1135 return __x.base() > __y.base();
1138 template <class _Iter1, class _Iter2>
1139 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1141 operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1143 return __x.base() >= __y.base();
1146 template <class _Iter1, class _Iter2>
1147 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1149 operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1151 return __x.base() <= __y.base();
1154 #ifndef _LIBCPP_CXX03_LANG
1155 template <class _Iter1, class _Iter2>
1156 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1158 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1159 -> decltype(__x.base() - __y.base())
1161 return __x.base() - __y.base();
1164 template <class _Iter1, class _Iter2>
1165 inline _LIBCPP_INLINE_VISIBILITY
1166 typename move_iterator<_Iter1>::difference_type
1167 operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
1169 return __x.base() - __y.base();
1173 template <class _Iter>
1174 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1175 move_iterator<_Iter>
1176 operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x)
1178 return move_iterator<_Iter>(__x.base() + __n);
1181 template <class _Iter>
1182 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1183 move_iterator<_Iter>
1184 make_move_iterator(_Iter __i)
1186 return move_iterator<_Iter>(__i);
1191 template <class _Iter> class __wrap_iter;
1193 template <class _Iter1, class _Iter2>
1194 _LIBCPP_INLINE_VISIBILITY
1196 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1198 template <class _Iter1, class _Iter2>
1199 _LIBCPP_INLINE_VISIBILITY
1201 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1203 template <class _Iter1, class _Iter2>
1204 _LIBCPP_INLINE_VISIBILITY
1206 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1208 template <class _Iter1, class _Iter2>
1209 _LIBCPP_INLINE_VISIBILITY
1211 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1213 template <class _Iter1, class _Iter2>
1214 _LIBCPP_INLINE_VISIBILITY
1216 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1218 template <class _Iter1, class _Iter2>
1219 _LIBCPP_INLINE_VISIBILITY
1221 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1223 #ifndef _LIBCPP_CXX03_LANG
1224 template <class _Iter1, class _Iter2>
1225 _LIBCPP_INLINE_VISIBILITY
1227 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1228 -> decltype(__x.base() - __y.base());
1230 template <class _Iter1, class _Iter2>
1231 _LIBCPP_INLINE_VISIBILITY
1232 typename __wrap_iter<_Iter1>::difference_type
1233 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1236 template <class _Iter>
1237 _LIBCPP_INLINE_VISIBILITY
1239 operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT_DEBUG;
1241 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY copy(_Ip, _Ip, _Op);
1242 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY copy_backward(_B1, _B1, _B2);
1243 template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY move(_Ip, _Ip, _Op);
1244 template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY move_backward(_B1, _B1, _B2);
1246 #if _LIBCPP_DEBUG_LEVEL < 2
1248 template <class _Tp>
1249 _LIBCPP_INLINE_VISIBILITY
1252 is_trivially_copy_assignable<_Tp>::value,
1255 __unwrap_iter(__wrap_iter<_Tp*>);
1259 template <class _Tp>
1260 inline _LIBCPP_INLINE_VISIBILITY
1263 is_trivially_copy_assignable<_Tp>::value,
1266 __unwrap_iter(__wrap_iter<_Tp*> __i);
1270 template <class _Iter>
1274 typedef _Iter iterator_type;
1275 typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
1276 typedef typename iterator_traits<iterator_type>::value_type value_type;
1277 typedef typename iterator_traits<iterator_type>::difference_type difference_type;
1278 typedef typename iterator_traits<iterator_type>::pointer pointer;
1279 typedef typename iterator_traits<iterator_type>::reference reference;
1283 _LIBCPP_INLINE_VISIBILITY __wrap_iter() _NOEXCEPT_DEBUG
1284 #if _LIBCPP_STD_VER > 11
1288 #if _LIBCPP_DEBUG_LEVEL >= 2
1289 __get_db()->__insert_i(this);
1292 template <class _Up> _LIBCPP_INLINE_VISIBILITY __wrap_iter(const __wrap_iter<_Up>& __u,
1293 typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT_DEBUG
1296 #if _LIBCPP_DEBUG_LEVEL >= 2
1297 __get_db()->__iterator_copy(this, &__u);
1300 #if _LIBCPP_DEBUG_LEVEL >= 2
1301 _LIBCPP_INLINE_VISIBILITY
1302 __wrap_iter(const __wrap_iter& __x)
1305 __get_db()->__iterator_copy(this, &__x);
1307 _LIBCPP_INLINE_VISIBILITY
1308 __wrap_iter& operator=(const __wrap_iter& __x)
1312 __get_db()->__iterator_copy(this, &__x);
1317 _LIBCPP_INLINE_VISIBILITY
1320 __get_db()->__erase_i(this);
1323 _LIBCPP_INLINE_VISIBILITY reference operator*() const _NOEXCEPT_DEBUG
1325 #if _LIBCPP_DEBUG_LEVEL >= 2
1326 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
1327 "Attempted to dereference a non-dereferenceable iterator");
1331 _LIBCPP_INLINE_VISIBILITY pointer operator->() const _NOEXCEPT_DEBUG
1333 #if _LIBCPP_DEBUG_LEVEL >= 2
1334 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
1335 "Attempted to dereference a non-dereferenceable iterator");
1337 return (pointer)_VSTD::addressof(*__i);
1339 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator++() _NOEXCEPT_DEBUG
1341 #if _LIBCPP_DEBUG_LEVEL >= 2
1342 _LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
1343 "Attempted to increment non-incrementable iterator");
1348 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator++(int) _NOEXCEPT_DEBUG
1349 {__wrap_iter __tmp(*this); ++(*this); return __tmp;}
1350 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator--() _NOEXCEPT_DEBUG
1352 #if _LIBCPP_DEBUG_LEVEL >= 2
1353 _LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
1354 "Attempted to decrement non-decrementable iterator");
1359 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator--(int) _NOEXCEPT_DEBUG
1360 {__wrap_iter __tmp(*this); --(*this); return __tmp;}
1361 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator+ (difference_type __n) const _NOEXCEPT_DEBUG
1362 {__wrap_iter __w(*this); __w += __n; return __w;}
1363 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator+=(difference_type __n) _NOEXCEPT_DEBUG
1365 #if _LIBCPP_DEBUG_LEVEL >= 2
1366 _LIBCPP_ASSERT(__get_const_db()->__addable(this, __n),
1367 "Attempted to add/subtract iterator outside of valid range");
1372 _LIBCPP_INLINE_VISIBILITY __wrap_iter operator- (difference_type __n) const _NOEXCEPT_DEBUG
1373 {return *this + (-__n);}
1374 _LIBCPP_INLINE_VISIBILITY __wrap_iter& operator-=(difference_type __n) _NOEXCEPT_DEBUG
1375 {*this += -__n; return *this;}
1376 _LIBCPP_INLINE_VISIBILITY reference operator[](difference_type __n) const _NOEXCEPT_DEBUG
1378 #if _LIBCPP_DEBUG_LEVEL >= 2
1379 _LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n),
1380 "Attempted to subscript iterator outside of valid range");
1385 _LIBCPP_INLINE_VISIBILITY iterator_type base() const _NOEXCEPT_DEBUG {return __i;}
1388 #if _LIBCPP_DEBUG_LEVEL >= 2
1389 _LIBCPP_INLINE_VISIBILITY __wrap_iter(const void* __p, iterator_type __x) : __i(__x)
1391 __get_db()->__insert_ic(this, __p);
1394 _LIBCPP_INLINE_VISIBILITY __wrap_iter(iterator_type __x) _NOEXCEPT_DEBUG : __i(__x) {}
1397 template <class _Up> friend class __wrap_iter;
1398 template <class _CharT, class _Traits, class _Alloc> friend class basic_string;
1399 template <class _Tp, class _Alloc> friend class _LIBCPP_TEMPLATE_VIS vector;
1401 template <class _Iter1, class _Iter2>
1404 operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1406 template <class _Iter1, class _Iter2>
1409 operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1411 template <class _Iter1, class _Iter2>
1414 operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1416 template <class _Iter1, class _Iter2>
1419 operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1421 template <class _Iter1, class _Iter2>
1424 operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1426 template <class _Iter1, class _Iter2>
1429 operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1431 #ifndef _LIBCPP_CXX03_LANG
1432 template <class _Iter1, class _Iter2>
1435 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1436 -> decltype(__x.base() - __y.base());
1438 template <class _Iter1, class _Iter2>
1440 typename __wrap_iter<_Iter1>::difference_type
1441 operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT_DEBUG;
1444 template <class _Iter1>
1447 operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT_DEBUG;
1449 template <class _Ip, class _Op> friend _Op copy(_Ip, _Ip, _Op);
1450 template <class _B1, class _B2> friend _B2 copy_backward(_B1, _B1, _B2);
1451 template <class _Ip, class _Op> friend _Op move(_Ip, _Ip, _Op);
1452 template <class _B1, class _B2> friend _B2 move_backward(_B1, _B1, _B2);
1454 #if _LIBCPP_DEBUG_LEVEL < 2
1455 template <class _Tp>
1459 is_trivially_copy_assignable<_Tp>::value,
1462 __unwrap_iter(__wrap_iter<_Tp*>);
1464 template <class _Tp>
1465 inline _LIBCPP_INLINE_VISIBILITY
1468 is_trivially_copy_assignable<_Tp>::value,
1471 __unwrap_iter(__wrap_iter<_Tp*> __i);
1475 template <class _Iter1, class _Iter2>
1476 inline _LIBCPP_INLINE_VISIBILITY
1478 operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1480 return __x.base() == __y.base();
1483 template <class _Iter1, class _Iter2>
1484 inline _LIBCPP_INLINE_VISIBILITY
1486 operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1488 #if _LIBCPP_DEBUG_LEVEL >= 2
1489 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
1490 "Attempted to compare incomparable iterators");
1492 return __x.base() < __y.base();
1495 template <class _Iter1, class _Iter2>
1496 inline _LIBCPP_INLINE_VISIBILITY
1498 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1500 return !(__x == __y);
1503 template <class _Iter1, class _Iter2>
1504 inline _LIBCPP_INLINE_VISIBILITY
1506 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1511 template <class _Iter1, class _Iter2>
1512 inline _LIBCPP_INLINE_VISIBILITY
1514 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1516 return !(__x < __y);
1519 template <class _Iter1, class _Iter2>
1520 inline _LIBCPP_INLINE_VISIBILITY
1522 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1524 return !(__y < __x);
1527 template <class _Iter1>
1528 inline _LIBCPP_INLINE_VISIBILITY
1530 operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG
1532 return !(__x == __y);
1535 template <class _Iter1>
1536 inline _LIBCPP_INLINE_VISIBILITY
1538 operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG
1543 template <class _Iter1>
1544 inline _LIBCPP_INLINE_VISIBILITY
1546 operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG
1548 return !(__x < __y);
1551 template <class _Iter1>
1552 inline _LIBCPP_INLINE_VISIBILITY
1554 operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT_DEBUG
1556 return !(__y < __x);
1559 #ifndef _LIBCPP_CXX03_LANG
1560 template <class _Iter1, class _Iter2>
1561 inline _LIBCPP_INLINE_VISIBILITY
1563 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1564 -> decltype(__x.base() - __y.base())
1566 #if _LIBCPP_DEBUG_LEVEL >= 2
1567 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
1568 "Attempted to subtract incompatible iterators");
1570 return __x.base() - __y.base();
1573 template <class _Iter1, class _Iter2>
1574 inline _LIBCPP_INLINE_VISIBILITY
1575 typename __wrap_iter<_Iter1>::difference_type
1576 operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT_DEBUG
1578 #if _LIBCPP_DEBUG_LEVEL >= 2
1579 _LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
1580 "Attempted to subtract incompatible iterators");
1582 return __x.base() - __y.base();
1586 template <class _Iter>
1587 inline _LIBCPP_INLINE_VISIBILITY
1589 operator+(typename __wrap_iter<_Iter>::difference_type __n,
1590 __wrap_iter<_Iter> __x) _NOEXCEPT_DEBUG
1596 template <class _Iter>
1597 struct __libcpp_is_trivial_iterator
1598 : public _LIBCPP_BOOL_CONSTANT(is_pointer<_Iter>::value) {};
1600 template <class _Iter>
1601 struct __libcpp_is_trivial_iterator<move_iterator<_Iter> >
1602 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {};
1604 template <class _Iter>
1605 struct __libcpp_is_trivial_iterator<reverse_iterator<_Iter> >
1606 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {};
1608 template <class _Iter>
1609 struct __libcpp_is_trivial_iterator<__wrap_iter<_Iter> >
1610 : public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {};
1613 template <class _Tp, size_t _Np>
1614 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1616 begin(_Tp (&__array)[_Np])
1621 template <class _Tp, size_t _Np>
1622 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1624 end(_Tp (&__array)[_Np])
1626 return __array + _Np;
1629 #if !defined(_LIBCPP_CXX03_LANG)
1631 template <class _Cp>
1632 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1634 begin(_Cp& __c) -> decltype(__c.begin())
1639 template <class _Cp>
1640 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1642 begin(const _Cp& __c) -> decltype(__c.begin())
1647 template <class _Cp>
1648 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1650 end(_Cp& __c) -> decltype(__c.end())
1655 template <class _Cp>
1656 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1658 end(const _Cp& __c) -> decltype(__c.end())
1663 #if _LIBCPP_STD_VER > 11
1665 template <class _Tp, size_t _Np>
1666 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1667 reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np])
1669 return reverse_iterator<_Tp*>(__array + _Np);
1672 template <class _Tp, size_t _Np>
1673 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1674 reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np])
1676 return reverse_iterator<_Tp*>(__array);
1679 template <class _Ep>
1680 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1681 reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il)
1683 return reverse_iterator<const _Ep*>(__il.end());
1686 template <class _Ep>
1687 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1688 reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il)
1690 return reverse_iterator<const _Ep*>(__il.begin());
1693 template <class _Cp>
1694 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1695 auto cbegin(const _Cp& __c) -> decltype(_VSTD::begin(__c))
1697 return _VSTD::begin(__c);
1700 template <class _Cp>
1701 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
1702 auto cend(const _Cp& __c) -> decltype(_VSTD::end(__c))
1704 return _VSTD::end(__c);
1707 template <class _Cp>
1708 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1709 auto rbegin(_Cp& __c) -> decltype(__c.rbegin())
1711 return __c.rbegin();
1714 template <class _Cp>
1715 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1716 auto rbegin(const _Cp& __c) -> decltype(__c.rbegin())
1718 return __c.rbegin();
1721 template <class _Cp>
1722 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1723 auto rend(_Cp& __c) -> decltype(__c.rend())
1728 template <class _Cp>
1729 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1730 auto rend(const _Cp& __c) -> decltype(__c.rend())
1735 template <class _Cp>
1736 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1737 auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c))
1739 return _VSTD::rbegin(__c);
1742 template <class _Cp>
1743 inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
1744 auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c))
1746 return _VSTD::rend(__c);
1752 #else // defined(_LIBCPP_CXX03_LANG)
1754 template <class _Cp>
1755 inline _LIBCPP_INLINE_VISIBILITY
1756 typename _Cp::iterator
1762 template <class _Cp>
1763 inline _LIBCPP_INLINE_VISIBILITY
1764 typename _Cp::const_iterator
1765 begin(const _Cp& __c)
1770 template <class _Cp>
1771 inline _LIBCPP_INLINE_VISIBILITY
1772 typename _Cp::iterator
1778 template <class _Cp>
1779 inline _LIBCPP_INLINE_VISIBILITY
1780 typename _Cp::const_iterator
1786 #endif // !defined(_LIBCPP_CXX03_LANG)
1788 #if _LIBCPP_STD_VER > 14
1789 template <class _Cont>
1790 constexpr auto size(const _Cont& __c) -> decltype(__c.size()) { return __c.size(); }
1792 template <class _Tp, size_t _Sz>
1793 constexpr size_t size(const _Tp (&)[_Sz]) noexcept { return _Sz; }
1795 template <class _Cont>
1796 constexpr auto empty(const _Cont& __c) -> decltype(__c.empty()) { return __c.empty(); }
1798 template <class _Tp, size_t _Sz>
1799 constexpr bool empty(const _Tp (&)[_Sz]) noexcept { return false; }
1801 template <class _Ep>
1802 constexpr bool empty(initializer_list<_Ep> __il) noexcept { return __il.size() == 0; }
1804 template <class _Cont> constexpr
1805 auto data(_Cont& __c) -> decltype(__c.data()) { return __c.data(); }
1807 template <class _Cont> constexpr
1808 auto data(const _Cont& __c) -> decltype(__c.data()) { return __c.data(); }
1810 template <class _Tp, size_t _Sz>
1811 constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; }
1813 template <class _Ep>
1814 constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); }
1818 _LIBCPP_END_NAMESPACE_STD
1820 #endif // _LIBCPP_ITERATOR