| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_ITERATOR |
| #define _LIBCPP_ITERATOR |
| |
| /* |
| iterator synopsis |
| |
| #include <concepts> |
| |
| namespace std |
| { |
| template<class> struct incrementable_traits; // since C++20 |
| template<class T> |
| using iter_difference_t = see below; // since C++20 |
| |
| template<class> struct indirectly_readable_traits; // since C++20 |
| template<class T> |
| using iter_value_t = see below; // since C++20 |
| |
| template<class Iterator> |
| struct iterator_traits; |
| |
| template<class T> |
| requires is_object_v<T> // since C++20 |
| struct iterator_traits<T*>; |
| |
| template<dereferenceable T> |
| using iter_reference_t = decltype(*declval<T&>()); |
| |
| namespace ranges::inline unspecified { |
| inline constexpr unspecified iter_move = unspecified; // since C++20, nodiscard as an extension |
| }} |
| |
| template<dereferenceable T> |
| requires ... |
| using iter_rvalue_reference_t = decltype(ranges::iter_move(declval<T&>())); // since C++20 |
| |
| // [iterator.concepts], iterator concepts |
| // [iterator.concept.readable], concept indirectly_readable |
| template<class In> |
| concept indirectly_readable = see below; // since C++20 |
| |
| template<indirectly_readable T> |
| using iter_common_reference_t = |
| common_reference_t<iter_reference_t<T>, iter_value_t<T>&>; // since C++20 |
| |
| // [iterator.concept.writable], concept indirectly_writable |
| template<class Out, class T> |
| concept indirectly_writable = see below; // since C++20 |
| |
| // [iterator.concept.winc], concept weakly_incrementable |
| template<class I> |
| concept weakly_incrementable = see below; // since C++20 |
| |
| // [iterator.concept.inc], concept incrementable |
| template<class I> |
| concept incrementable = see below; // since C++20 |
| |
| // [iterator.concept.iterator], concept input_or_output_iterator |
| template<class I> |
| concept input_or_output_iterator = see below; // since C++20 |
| |
| // [iterator.concept.sentinel], concept sentinel_for |
| template<class S, class I> |
| concept sentinel_for = see below; // since C++20 |
| |
| // [iterator.concept.sizedsentinel], concept sized_sentinel_for |
| template<class S, class I> |
| inline constexpr bool disable_sized_sentinel_for = false; |
| |
| template<class S, class I> |
| concept sized_sentinel_for = see below; |
| |
| // [iterator.concept.input], concept input_iterator |
| template<class I> |
| concept input_iterator = see below; // since C++20 |
| |
| // [iterator.concept.output], concept output_iterator |
| template<class I, class T> |
| concept output_iterator = see below; // since C++20 |
| |
| // [iterator.concept.forward], concept forward_iterator |
| template<class I> |
| concept forward_iterator = see below; // since C++20 |
| |
| // [iterator.concept.bidir], concept bidirectional_iterator |
| template<class I> |
| concept bidirectional_iterator = see below; // since C++20 |
| |
| // [iterator.concept.random.access], concept random_access_iterator |
| template<class I> |
| concept random_access_iterator = see below; // since C++20 |
| |
| // [indirectcallable] |
| // [indirectcallable.indirectinvocable] |
| template<class F, class I> |
| concept indirectly_unary_invocable = see below; // since C++20 |
| |
| template<class F, class I> |
| concept indirectly_regular_unary_invocable = see below; // since C++20 |
| |
| template<class F, class I> |
| concept indirect_unary_predicate = see below; // since C++20 |
| |
| template<class F, class I1, class I2> |
| concept indirect_binary_predicate = see below; // since C++20 |
| |
| template<class F, class I1, class I2 = I1> |
| concept indirect_equivalence_relation = see below; // since C++20 |
| |
| template<class F, class I1, class I2 = I1> |
| concept indirect_strict_weak_order = see below; // since C++20 |
| |
| template<class F, class... Is> |
| using indirect_result_t = see below; // since C++20 |
| |
| // [projected], projected |
| template<indirectly_readable I, indirectly_regular_unary_invocable<I> Proj> |
| struct projected; // since C++20 |
| |
| template<weakly_incrementable I, indirectly_regular_unary_invocable<I> Proj> |
| struct incrementable_traits<projected<I, Proj>>; // since C++20 |
| |
| // [alg.req.ind.move], concept indirectly_movable |
| template<class In, class Out> |
| concept indirectly_movable = see below; // since C++20 |
| |
| template<class In, class Out> |
| concept indirectly_movable_storable = see below; // since C++20 |
| |
| // [alg.req.ind.copy], concept indirectly_copyable |
| template<class In, class Out> |
| concept indirectly_copyable = see below; // since C++20 |
| |
| template<class In, class Out> |
| concept indirectly_copyable_storable = see below; // since C++20 |
| |
| // [alg.req.ind.swap], concept indirectly_swappable |
| template<class I1, class I2 = I1> |
| concept indirectly_swappable = see below; // since C++20 |
| |
| template<class I1, class I2, class R, class P1 = identity, |
| class P2 = identity> |
| concept indirectly_comparable = |
| indirect_binary_predicate<R, projected<I1, P1>, projected<I2, P2>>; // since C++20 |
| |
| // [alg.req.permutable], concept permutable |
| template<class I> |
| concept permutable = see below; // since C++20 |
| |
| // [alg.req.mergeable], concept mergeable |
| template<class I1, class I2, class Out, |
| class R = ranges::less, class P1 = identity, class P2 = identity> |
| concept mergeable = see below; // since C++20 |
| |
| // [alg.req.sortable], concept sortable |
| template<class I, class R = ranges::less, class P = identity> |
| concept sortable = see below; // since C++20 |
| |
| template<input_or_output_iterator I, sentinel_for<I> S> |
| requires (!same_as<I, S> && copyable<I>) |
| class common_iterator; // since C++20 |
| |
| template<class Category, class T, class Distance = ptrdiff_t, |
| class Pointer = T*, class Reference = T&> |
| struct iterator // deprecated in C++17 |
| { |
| typedef T value_type; |
| typedef Distance difference_type; |
| typedef Pointer pointer; |
| typedef Reference reference; |
| typedef Category iterator_category; |
| }; |
| |
| struct input_iterator_tag {}; |
| struct output_iterator_tag {}; |
| struct forward_iterator_tag : public input_iterator_tag {}; |
| struct bidirectional_iterator_tag : public forward_iterator_tag {}; |
| struct random_access_iterator_tag : public bidirectional_iterator_tag {}; |
| struct contiguous_iterator_tag : public random_access_iterator_tag {}; |
| |
| // 27.4.3, iterator operations |
| template <class InputIterator, class Distance> // constexpr in C++17 |
| constexpr void advance(InputIterator& i, Distance n); |
| |
| template <class InputIterator> // constexpr in C++17 |
| constexpr typename iterator_traits<InputIterator>::difference_type |
| distance(InputIterator first, InputIterator last); |
| |
| template <class InputIterator> // constexpr in C++17 |
| constexpr InputIterator next(InputIterator x, |
| typename iterator_traits<InputIterator>::difference_type n = 1); |
| |
| template <class BidirectionalIterator> // constexpr in C++17 |
| constexpr BidirectionalIterator prev(BidirectionalIterator x, |
| typename iterator_traits<BidirectionalIterator>::difference_type n = 1); |
| |
| // [range.iter.ops], range iterator operations |
| namespace ranges { |
| // [range.iter.op.advance], ranges::advance |
| template<input_or_output_iterator I> |
| constexpr void advance(I& i, iter_difference_t<I> n); // since C++20 |
| template<input_or_output_iterator I, sentinel_for<I> S> |
| constexpr void advance(I& i, S bound); // since C++20 |
| template<input_or_output_iterator I, sentinel_for<I> S> |
| constexpr iter_difference_t<I> advance(I& i, iter_difference_t<I> n, S bound); // since C++20 |
| } |
| |
| template <class Iterator> |
| class reverse_iterator |
| : public iterator<typename iterator_traits<Iterator>::iterator_category, // until C++17 |
| typename iterator_traits<Iterator>::value_type, |
| typename iterator_traits<Iterator>::difference_type, |
| typename iterator_traits<Iterator>::pointer, |
| typename iterator_traits<Iterator>::reference> |
| { |
| protected: |
| Iterator current; |
| public: |
| using iterator_type = Iterator; |
| using iterator_concept = see below; // since C++20 |
| using iterator_category = typename iterator_traits<Iterator>::iterator_category; // since C++17, until C++20 |
| using iterator_category = see below; // since C++20 |
| using value_type = typename iterator_traits<Iterator>::value_type; // since C++17, until C++20 |
| using value_type = iter_value_t<Iterator>; // since C++20 |
| using difference_type = typename iterator_traits<Iterator>::difference_type; // until C++20 |
| using difference_type = iter_difference_t<Iterator>; // since C++20 |
| using pointer = typename iterator_traits<Iterator>::pointer; |
| using reference = typename iterator_traits<Iterator>::reference; // until C++20 |
| using reference = iter_reference_t<Iterator>; // since C++20 |
| |
| constexpr reverse_iterator(); |
| constexpr explicit reverse_iterator(Iterator x); |
| template <class U> constexpr reverse_iterator(const reverse_iterator<U>& u); |
| template <class U> constexpr reverse_iterator& operator=(const reverse_iterator<U>& u); |
| constexpr Iterator base() const; |
| constexpr reference operator*() const; |
| constexpr pointer operator->() const; // until C++20 |
| constexpr pointer operator->() const requires see below; // since C++20 |
| constexpr reverse_iterator& operator++(); |
| constexpr reverse_iterator operator++(int); |
| constexpr reverse_iterator& operator--(); |
| constexpr reverse_iterator operator--(int); |
| constexpr reverse_iterator operator+ (difference_type n) const; |
| constexpr reverse_iterator& operator+=(difference_type n); |
| constexpr reverse_iterator operator- (difference_type n) const; |
| constexpr reverse_iterator& operator-=(difference_type n); |
| constexpr unspecified operator[](difference_type n) const; |
| |
| friend constexpr iter_rvalue_reference_t<Iterator> |
| iter_move(const reverse_iterator& i) noexcept(see below); |
| template<indirectly_swappable<Iterator> Iterator2> |
| friend constexpr void |
| iter_swap(const reverse_iterator& x, |
| const reverse_iterator<Iterator2>& y) noexcept(see below); |
| }; |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator==(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator!=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator<(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator>(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator<=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator>=(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y); |
| |
| template<class Iterator1, three_way_comparable_with<Iterator1> Iterator2> |
| constexpr compare_three_way_result_t<Iterator1, Iterator2> |
| operator<=>(const reverse_iterator<Iterator1>& x, |
| const reverse_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr auto |
| operator-(const reverse_iterator<Iterator1>& x, const reverse_iterator<Iterator2>& y) |
| -> decltype(__y.base() - __x.base()); // constexpr in C++17 |
| |
| template <class Iterator> |
| constexpr reverse_iterator<Iterator> |
| operator+(typename reverse_iterator<Iterator>::difference_type n, |
| const reverse_iterator<Iterator>& x); // constexpr in C++17 |
| |
| template <class Iterator> |
| constexpr reverse_iterator<Iterator> make_reverse_iterator(Iterator i); // C++14, constexpr in C++17 |
| |
| template<class Iterator1, class Iterator2> |
| requires (!sized_sentinel_for<Iterator1, Iterator2>) |
| inline constexpr bool disable_sized_sentinel_for<reverse_iterator<Iterator1>, |
| reverse_iterator<Iterator2>> = true; |
| |
| template <class Container> |
| class back_insert_iterator |
| : public iterator<output_iterator_tag, void, void, void, void> // until C++17 |
| { |
| protected: |
| Container* container; |
| public: |
| typedef Container container_type; |
| typedef void value_type; |
| typedef void difference_type; // until C++20 |
| typedef ptrdiff_t difference_type; // since C++20 |
| typedef void reference; |
| typedef void pointer; |
| |
| explicit back_insert_iterator(Container& x); // constexpr in C++20 |
| back_insert_iterator& operator=(const typename Container::value_type& value); // constexpr in C++20 |
| back_insert_iterator& operator*(); // constexpr in C++20 |
| back_insert_iterator& operator++(); // constexpr in C++20 |
| back_insert_iterator operator++(int); // constexpr in C++20 |
| }; |
| |
| template <class Container> back_insert_iterator<Container> back_inserter(Container& x); // constexpr in C++20 |
| |
| template <class Container> |
| class front_insert_iterator |
| : public iterator<output_iterator_tag, void, void, void, void> // until C++17 |
| { |
| protected: |
| Container* container; |
| public: |
| typedef Container container_type; |
| typedef void value_type; |
| typedef void difference_type; // until C++20 |
| typedef ptrdiff_t difference_type; // since C++20 |
| typedef void reference; |
| typedef void pointer; |
| |
| explicit front_insert_iterator(Container& x); // constexpr in C++20 |
| front_insert_iterator& operator=(const typename Container::value_type& value); // constexpr in C++20 |
| front_insert_iterator& operator*(); // constexpr in C++20 |
| front_insert_iterator& operator++(); // constexpr in C++20 |
| front_insert_iterator operator++(int); // constexpr in C++20 |
| }; |
| |
| template <class Container> front_insert_iterator<Container> front_inserter(Container& x); // constexpr in C++20 |
| |
| template <class Container> |
| class insert_iterator |
| : public iterator<output_iterator_tag, void, void, void, void> // until C++17 |
| { |
| protected: |
| Container* container; |
| typename Container::iterator iter; |
| public: |
| typedef Container container_type; |
| typedef void value_type; |
| typedef void difference_type; // until C++20 |
| typedef ptrdiff_t difference_type; // since C++20 |
| typedef void reference; |
| typedef void pointer; |
| |
| insert_iterator(Container& x, typename Container::iterator i); // constexpr in C++20 |
| insert_iterator& operator=(const typename Container::value_type& value); // constexpr in C++20 |
| insert_iterator& operator*(); // constexpr in C++20 |
| insert_iterator& operator++(); // constexpr in C++20 |
| insert_iterator& operator++(int); // constexpr in C++20 |
| }; |
| |
| template <class Container> |
| insert_iterator<Container> inserter(Container& x, typename Container::iterator i); // until C++20 |
| template <class Container> |
| constexpr insert_iterator<Container> inserter(Container& x, ranges::iterator_t<Container> i); // since C++20 |
| |
| template <class Iterator> |
| class move_iterator { |
| public: |
| using iterator_type = Iterator; |
| using iterator_concept = input_iterator_tag; // From C++20 |
| using iterator_category = see below; // not always present starting from C++20 |
| using value_type = iter_value_t<Iterator>; // Until C++20, iterator_traits<Iterator>::value_type |
| using difference_type = iter_difference_t<Iterator>; // Until C++20, iterator_traits<Iterator>::difference_type; |
| using pointer = Iterator; |
| using reference = iter_rvalue_reference_t<Iterator>; // Until C++20, value_type&& |
| |
| constexpr move_iterator(); // all the constexprs are in C++17 |
| constexpr explicit move_iterator(Iterator i); |
| template <class U> |
| constexpr move_iterator(const move_iterator<U>& u); |
| template <class U> |
| constexpr move_iterator& operator=(const move_iterator<U>& u); |
| |
| constexpr iterator_type base() const; // Until C++20 |
| constexpr const Iterator& base() const & noexcept; // From C++20 |
| constexpr Iterator base() &&; // From C++20 |
| |
| constexpr reference operator*() const; |
| constexpr pointer operator->() const; // Deprecated in C++20 |
| constexpr move_iterator& operator++(); |
| constexpr auto operator++(int); // Return type was move_iterator until C++20 |
| constexpr move_iterator& operator--(); |
| constexpr move_iterator operator--(int); |
| constexpr move_iterator operator+(difference_type n) const; |
| constexpr move_iterator& operator+=(difference_type n); |
| constexpr move_iterator operator-(difference_type n) const; |
| constexpr move_iterator& operator-=(difference_type n); |
| constexpr reference operator[](difference_type n) const; // Return type unspecified until C++20 |
| |
| template<sentinel_for<Iterator> S> |
| friend constexpr bool |
| operator==(const move_iterator& x, const move_sentinel<S>& y); // Since C++20 |
| template<sized_sentinel_for<Iterator> S> |
| friend constexpr iter_difference_t<Iterator> |
| operator-(const move_sentinel<S>& x, const move_iterator& y); // Since C++20 |
| template<sized_sentinel_for<Iterator> S> |
| friend constexpr iter_difference_t<Iterator> |
| operator-(const move_iterator& x, const move_sentinel<S>& y); // Since C++20 |
| friend constexpr iter_rvalue_reference_t<Iterator> |
| iter_move(const move_iterator& i) |
| noexcept(noexcept(ranges::iter_move(i.current))); // Since C++20 |
| template<indirectly_swappable<Iterator> Iterator2> |
| friend constexpr void |
| iter_swap(const move_iterator& x, const move_iterator<Iterator2>& y) |
| noexcept(noexcept(ranges::iter_swap(x.current, y.current))); // Since C++20 |
| |
| private: |
| Iterator current; // exposition only |
| }; |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator==(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator!=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator<(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator<=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator>(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr bool // constexpr in C++17 |
| operator>=(const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y); |
| |
| template <class Iterator1, class Iterator2> |
| constexpr auto // constexpr in C++17 |
| operator-(const move_iterator<Iterator1>& x, |
| const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base()); |
| |
| template <class Iterator> |
| constexpr move_iterator<Iterator> operator+( // constexpr in C++17 |
| typename move_iterator<Iterator>::difference_type n, |
| const move_iterator<Iterator>& x); |
| |
| template <class Iterator> // constexpr in C++17 |
| constexpr move_iterator<Iterator> make_move_iterator(const Iterator& i); |
| |
| template<semiregular S> |
| class move_sentinel { |
| public: |
| constexpr move_sentinel(); |
| constexpr explicit move_sentinel(S s); |
| template<class S2> |
| requires convertible_to<const S2&, S> |
| constexpr move_sentinel(const move_sentinel<S2>& s); |
| template<class S2> |
| requires assignable_from<S&, const S2&> |
| constexpr move_sentinel& operator=(const move_sentinel<S2>& s); |
| |
| constexpr S base() const; |
| private: |
| S last; // exposition only |
| }; |
| |
| // [default.sentinel], default sentinel |
| struct default_sentinel_t; |
| inline constexpr default_sentinel_t default_sentinel{}; |
| |
| // [iterators.counted], counted iterators |
| template<input_or_output_iterator I> class counted_iterator; |
| |
| template<input_iterator I> |
| requires see below |
| struct iterator_traits<counted_iterator<I>>; |
| |
| // [unreachable.sentinel], unreachable sentinel |
| struct unreachable_sentinel_t; |
| inline constexpr unreachable_sentinel_t unreachable_sentinel{}; |
| |
| template <class T, class charT = char, class traits = char_traits<charT>, class Distance = ptrdiff_t> |
| class istream_iterator |
| : public iterator<input_iterator_tag, T, Distance, const T*, const T&> // until C++17 |
| { |
| public: |
| typedef input_iterator_tag iterator_category; |
| typedef T value_type; |
| typedef Distance difference_type; |
| typedef const T* pointer; |
| typedef const T& reference; |
| |
| typedef charT char_type; |
| typedef traits traits_type; |
| typedef basic_istream<charT, traits> istream_type; |
| |
| istream_iterator(); // constexpr since C++11 |
| constexpr istream_iterator(default_sentinel_t); // since C++20 |
| istream_iterator(istream_type& s); |
| istream_iterator(const istream_iterator& x); |
| ~istream_iterator(); |
| |
| const T& operator*() const; |
| const T* operator->() const; |
| istream_iterator& operator++(); |
| istream_iterator operator++(int); |
| friend bool operator==(const istream_iterator& i, default_sentinel_t); // since C++20 |
| }; |
| |
| template <class T, class charT, class traits, class Distance> |
| bool operator==(const istream_iterator<T,charT,traits,Distance>& x, |
| const istream_iterator<T,charT,traits,Distance>& y); |
| template <class T, class charT, class traits, class Distance> |
| bool operator!=(const istream_iterator<T,charT,traits,Distance>& x, |
| const istream_iterator<T,charT,traits,Distance>& y); // until C++20 |
| |
| template <class T, class charT = char, class traits = char_traits<charT> > |
| class ostream_iterator |
| : public iterator<output_iterator_tag, void, void, void, void> // until C++17 |
| { |
| public: |
| typedef output_iterator_tag iterator_category; |
| typedef void value_type; |
| typedef void difference_type; // until C++20 |
| typedef ptrdiff_t difference_type; // since C++20 |
| typedef void pointer; |
| typedef void reference; |
| |
| typedef charT char_type; |
| typedef traits traits_type; |
| typedef basic_ostream<charT,traits> ostream_type; |
| |
| ostream_iterator(ostream_type& s); |
| ostream_iterator(ostream_type& s, const charT* delimiter); |
| ostream_iterator(const ostream_iterator& x); |
| ~ostream_iterator(); |
| ostream_iterator& operator=(const T& value); |
| |
| ostream_iterator& operator*(); |
| ostream_iterator& operator++(); |
| ostream_iterator& operator++(int); |
| }; |
| |
| template<class charT, class traits = char_traits<charT> > |
| class istreambuf_iterator |
| : public iterator<input_iterator_tag, charT, traits::off_type, unspecified, charT> // until C++17 |
| { |
| public: |
| typedef input_iterator_tag iterator_category; |
| typedef charT value_type; |
| typedef traits::off_type difference_type; |
| typedef unspecified pointer; |
| typedef charT reference; |
| |
| typedef charT char_type; |
| typedef traits traits_type; |
| typedef traits::int_type int_type; |
| typedef basic_streambuf<charT, traits> streambuf_type; |
| typedef basic_istream<charT, traits> istream_type; |
| |
| istreambuf_iterator() noexcept; // constexpr since C++11 |
| constexpr istreambuf_iterator(default_sentinel_t) noexcept; // since C++20 |
| istreambuf_iterator(istream_type& s) noexcept; |
| istreambuf_iterator(streambuf_type* s) noexcept; |
| istreambuf_iterator(a-private-type) noexcept; |
| |
| charT operator*() const; |
| pointer operator->() const; |
| istreambuf_iterator& operator++(); |
| a-private-type operator++(int); |
| |
| bool equal(const istreambuf_iterator& b) const; |
| friend bool operator==(const istreambuf_iterator& i, default_sentinel_t s); // since C++20 |
| }; |
| |
| template <class charT, class traits> |
| bool operator==(const istreambuf_iterator<charT,traits>& a, |
| const istreambuf_iterator<charT,traits>& b); |
| template <class charT, class traits> |
| bool operator!=(const istreambuf_iterator<charT,traits>& a, |
| const istreambuf_iterator<charT,traits>& b); // until C++20 |
| |
| template <class charT, class traits = char_traits<charT> > |
| class ostreambuf_iterator |
| : public iterator<output_iterator_tag, void, void, void, void> // until C++17 |
| { |
| public: |
| typedef output_iterator_tag iterator_category; |
| typedef void value_type; |
| typedef void difference_type; // until C++20 |
| typedef ptrdiff_t difference_type; // since C++20 |
| typedef void pointer; |
| typedef void reference; |
| |
| typedef charT char_type; |
| typedef traits traits_type; |
| typedef basic_streambuf<charT, traits> streambuf_type; |
| typedef basic_ostream<charT, traits> ostream_type; |
| |
| ostreambuf_iterator(ostream_type& s) noexcept; |
| ostreambuf_iterator(streambuf_type* s) noexcept; |
| ostreambuf_iterator& operator=(charT c); |
| ostreambuf_iterator& operator*(); |
| ostreambuf_iterator& operator++(); |
| ostreambuf_iterator& operator++(int); |
| bool failed() const noexcept; |
| }; |
| |
| template <class C> constexpr auto begin(C& c) -> decltype(c.begin()); |
| template <class C> constexpr auto begin(const C& c) -> decltype(c.begin()); |
| template <class C> constexpr auto end(C& c) -> decltype(c.end()); |
| template <class C> constexpr auto end(const C& c) -> decltype(c.end()); |
| template <class T, size_t N> constexpr T* begin(T (&array)[N]); |
| template <class T, size_t N> constexpr T* end(T (&array)[N]); |
| |
| template <class C> auto constexpr cbegin(const C& c) -> decltype(std::begin(c)); // C++14 |
| template <class C> auto constexpr cend(const C& c) -> decltype(std::end(c)); // C++14 |
| template <class C> auto constexpr rbegin(C& c) -> decltype(c.rbegin()); // C++14 |
| template <class C> auto constexpr rbegin(const C& c) -> decltype(c.rbegin()); // C++14 |
| template <class C> auto constexpr rend(C& c) -> decltype(c.rend()); // C++14 |
| template <class C> constexpr auto rend(const C& c) -> decltype(c.rend()); // C++14 |
| template <class E> reverse_iterator<const E*> constexpr rbegin(initializer_list<E> il); // C++14 |
| template <class E> reverse_iterator<const E*> constexpr rend(initializer_list<E> il); // C++14 |
| template <class T, size_t N> reverse_iterator<T*> constexpr rbegin(T (&array)[N]); // C++14 |
| template <class T, size_t N> reverse_iterator<T*> constexpr rend(T (&array)[N]); // C++14 |
| template <class C> constexpr auto crbegin(const C& c) -> decltype(std::rbegin(c)); // C++14 |
| template <class C> constexpr auto crend(const C& c) -> decltype(std::rend(c)); // C++14 |
| |
| // 24.8, container access: |
| template <class C> constexpr auto size(const C& c) -> decltype(c.size()); // C++17 |
| template <class T, size_t N> constexpr size_t size(const T (&array)[N]) noexcept; // C++17 |
| |
| template <class C> constexpr auto ssize(const C& c) |
| -> common_type_t<ptrdiff_t, make_signed_t<decltype(c.size())>>; // C++20 |
| template <class T, ptrdiff_t> constexpr ptrdiff_t ssize(const T (&array)[N]) noexcept; // C++20 |
| |
| template <class C> constexpr auto empty(const C& c) -> decltype(c.empty()); // C++17 |
| template <class T, size_t N> constexpr bool empty(const T (&array)[N]) noexcept; // C++17 |
| template <class E> constexpr bool empty(initializer_list<E> il) noexcept; // C++17 |
| template <class C> constexpr auto data(C& c) -> decltype(c.data()); // C++17 |
| template <class C> constexpr auto data(const C& c) -> decltype(c.data()); // C++17 |
| template <class T, size_t N> constexpr T* data(T (&array)[N]) noexcept; // C++17 |
| template <class E> constexpr const E* data(initializer_list<E> il) noexcept; // C++17 |
| |
| } // std |
| |
| */ |
| |
| #include <__assert> // all public C++ headers provide the assertion handler |
| #include <__config> |
| #include <__debug> |
| #include <__iterator/access.h> |
| #include <__iterator/advance.h> |
| #include <__iterator/back_insert_iterator.h> |
| #include <__iterator/bounded_iter.h> |
| #include <__iterator/common_iterator.h> |
| #include <__iterator/concepts.h> |
| #include <__iterator/counted_iterator.h> |
| #include <__iterator/data.h> |
| #include <__iterator/default_sentinel.h> |
| #include <__iterator/distance.h> |
| #include <__iterator/empty.h> |
| #include <__iterator/erase_if_container.h> |
| #include <__iterator/front_insert_iterator.h> |
| #include <__iterator/incrementable_traits.h> |
| #include <__iterator/indirectly_comparable.h> |
| #include <__iterator/insert_iterator.h> |
| #include <__iterator/istream_iterator.h> |
| #include <__iterator/istreambuf_iterator.h> |
| #include <__iterator/iter_move.h> |
| #include <__iterator/iter_swap.h> |
| #include <__iterator/iterator.h> |
| #include <__iterator/iterator_traits.h> |
| #include <__iterator/mergeable.h> |
| #include <__iterator/move_iterator.h> |
| #include <__iterator/move_sentinel.h> |
| #include <__iterator/next.h> |
| #include <__iterator/ostream_iterator.h> |
| #include <__iterator/ostreambuf_iterator.h> |
| #include <__iterator/permutable.h> |
| #include <__iterator/prev.h> |
| #include <__iterator/projected.h> |
| #include <__iterator/readable_traits.h> |
| #include <__iterator/reverse_access.h> |
| #include <__iterator/reverse_iterator.h> |
| #include <__iterator/size.h> |
| #include <__iterator/sortable.h> |
| #include <__iterator/unreachable_sentinel.h> |
| #include <__iterator/wrap_iter.h> |
| #include <__memory/addressof.h> |
| #include <__memory/pointer_traits.h> |
| #include <cstddef> |
| #include <initializer_list> |
| #include <version> |
| |
| // standard-mandated includes |
| |
| // [iterator.synopsis] |
| #include <compare> |
| #include <concepts> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <exception> |
| # include <new> |
| # include <type_traits> |
| # include <typeinfo> |
| # include <utility> |
| #endif |
| |
| #endif // _LIBCPP_ITERATOR |
