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// -*- C++ -*-
//===-------------------------- iterator ----------------------------------===//
//
// 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
namespace std
{
template<class Iterator>
struct iterator_traits
{
typedef typename Iterator::difference_type difference_type;
typedef typename Iterator::value_type value_type;
typedef typename Iterator::pointer pointer;
typedef typename Iterator::reference reference;
typedef typename Iterator::iterator_category iterator_category;
};
template<class T>
struct iterator_traits<T*>
{
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef T* pointer;
typedef T& reference;
typedef random_access_iterator_tag iterator_category;
};
template<class Category, class T, class Distance = ptrdiff_t,
class Pointer = T*, class Reference = T&>
struct iterator
{
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 {};
// 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);
template <class Iterator>
class reverse_iterator
: public iterator<typename iterator_traits<Iterator>::iterator_category,
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:
typedef Iterator iterator_type;
typedef typename iterator_traits<Iterator>::difference_type difference_type;
typedef typename iterator_traits<Iterator>::reference reference;
typedef typename iterator_traits<Iterator>::pointer pointer;
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;
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 reference operator[](difference_type n) const;
};
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, 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 Container>
class back_insert_iterator
{
protected:
Container* container;
public:
typedef Container container_type;
typedef void value_type;
typedef void difference_type;
typedef void reference;
typedef void pointer;
explicit back_insert_iterator(Container& x);
back_insert_iterator& operator=(const typename Container::value_type& value);
back_insert_iterator& operator*();
back_insert_iterator& operator++();
back_insert_iterator operator++(int);
};
template <class Container> back_insert_iterator<Container> back_inserter(Container& x);
template <class Container>
class front_insert_iterator
{
protected:
Container* container;
public:
typedef Container container_type;
typedef void value_type;
typedef void difference_type;
typedef void reference;
typedef void pointer;
explicit front_insert_iterator(Container& x);
front_insert_iterator& operator=(const typename Container::value_type& value);
front_insert_iterator& operator*();
front_insert_iterator& operator++();
front_insert_iterator operator++(int);
};
template <class Container> front_insert_iterator<Container> front_inserter(Container& x);
template <class Container>
class insert_iterator
{
protected:
Container* container;
typename Container::iterator iter;
public:
typedef Container container_type;
typedef void value_type;
typedef void difference_type;
typedef void reference;
typedef void pointer;
insert_iterator(Container& x, typename Container::iterator i);
insert_iterator& operator=(const typename Container::value_type& value);
insert_iterator& operator*();
insert_iterator& operator++();
insert_iterator& operator++(int);
};
template <class Container, class Iterator>
insert_iterator<Container> inserter(Container& x, Iterator i);
template <class Iterator>
class move_iterator {
public:
typedef Iterator iterator_type;
typedef typename iterator_traits<Iterator>::difference_type difference_type;
typedef Iterator pointer;
typedef typename iterator_traits<Iterator>::value_type value_type;
typedef typename iterator_traits<Iterator>::iterator_category iterator_category;
typedef value_type&& reference;
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;
constexpr reference operator*() const;
constexpr pointer operator->() const;
constexpr move_iterator& operator++();
constexpr move_iterator operator++(int);
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 unspecified operator[](difference_type n) const;
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 <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&>
{
public:
typedef charT char_type;
typedef traits traits_type;
typedef basic_istream<charT,traits> istream_type;
constexpr istream_iterator();
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);
};
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);
template <class T, class charT = char, class traits = char_traits<charT> >
class ostream_iterator
: public iterator<output_iterator_tag, void, void, void ,void>
{
public:
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,
typename traits::off_type, unspecified,
charT>
{
public:
typedef charT char_type;
typedef traits traits_type;
typedef typename traits::int_type int_type;
typedef basic_streambuf<charT,traits> streambuf_type;
typedef basic_istream<charT,traits> istream_type;
istreambuf_iterator() noexcept;
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;
};
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);
template <class charT, class traits = char_traits<charT> >
class ostreambuf_iterator
: public iterator<output_iterator_tag, void, void, void, void>
{
public:
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 <__config>
#include <iosfwd> // for forward declarations of vector and string.
#include <__functional_base>
#include <type_traits>
#include <cstddef>
#include <initializer_list>
#include <version>
#include <__debug>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Iter>
struct _LIBCPP_TEMPLATE_VIS iterator_traits;
struct _LIBCPP_TEMPLATE_VIS input_iterator_tag {};
struct _LIBCPP_TEMPLATE_VIS output_iterator_tag {};
struct _LIBCPP_TEMPLATE_VIS forward_iterator_tag : public input_iterator_tag {};
struct _LIBCPP_TEMPLATE_VIS bidirectional_iterator_tag : public forward_iterator_tag {};
struct _LIBCPP_TEMPLATE_VIS random_access_iterator_tag : public bidirectional_iterator_tag {};
#if _LIBCPP_STD_VER > 17
// TODO(EricWF) contiguous_iterator_tag is provided as an extension prior to
// C++20 to allow optimizations for users providing wrapped iterator types.
struct _LIBCPP_TEMPLATE_VIS contiguous_iterator_tag: public random_access_iterator_tag { };
#endif
template <class _Iter>
struct __iter_traits_cache {
using type = _If<
__is_primary_template<iterator_traits<_Iter> >::value,
_Iter,
iterator_traits<_Iter>
>;
};
template <class _Iter>
using _ITER_TRAITS = typename __iter_traits_cache<_Iter>::type;
struct __iter_concept_concept_test {
template <class _Iter>
using _Apply = typename _ITER_TRAITS<_Iter>::iterator_concept;
};
struct __iter_concept_category_test {
template <class _Iter>
using _Apply = typename _ITER_TRAITS<_Iter>::iterator_category;
};
struct __iter_concept_random_fallback {
template <class _Iter>
using _Apply = _EnableIf<
__is_primary_template<iterator_traits<_Iter> >::value,
random_access_iterator_tag
>;
};
template <class _Iter, class _Tester> struct __test_iter_concept
: _IsValidExpansion<_Tester::template _Apply, _Iter>,
_Tester
{
};
template <class _Iter>
struct __iter_concept_cache {
using type = _Or<
__test_iter_concept<_Iter, __iter_concept_concept_test>,
__test_iter_concept<_Iter, __iter_concept_category_test>,
__test_iter_concept<_Iter, __iter_concept_random_fallback>
>;
};
template <class _Iter>
using _ITER_CONCEPT = typename __iter_concept_cache<_Iter>::type::template _Apply<_Iter>;
template <class _Tp>
struct __has_iterator_typedefs
{
private:
struct __two {char __lx; char __lxx;};
template <class _Up> static __two __test(...);
template <class _Up> static char __test(typename std::__void_t<typename _Up::iterator_category>::type* = 0,
typename std::__void_t<typename _Up::difference_type>::type* = 0,
typename std::__void_t<typename _Up::value_type>::type* = 0,
typename std::__void_t<typename _Up::reference>::type* = 0,
typename std::__void_t<typename _Up::pointer>::type* = 0
);
public:
static const bool value = sizeof(__test<_Tp>(0,0,0,0,0)) == 1;
};
template <class _Tp>
struct __has_iterator_category
{
private:
struct __two {char __lx; char __lxx;};
template <class _Up> static __two __test(...);
template <class _Up> static char __test(typename _Up::iterator_category* = 0);
public:
static const bool value = sizeof(__test<_Tp>(0)) == 1;
};
template <class _Iter, bool> struct __iterator_traits_impl {};
template <class _Iter>
struct __iterator_traits_impl<_Iter, true>
{
typedef typename _Iter::difference_type difference_type;
typedef typename _Iter::value_type value_type;
typedef typename _Iter::pointer pointer;
typedef typename _Iter::reference reference;
typedef typename _Iter::iterator_category iterator_category;
};
template <class _Iter, bool> struct __iterator_traits {};
template <class _Iter>
struct __iterator_traits<_Iter, true>
: __iterator_traits_impl
<
_Iter,
is_convertible<typename _Iter::iterator_category, input_iterator_tag>::value ||
is_convertible<typename _Iter::iterator_category, output_iterator_tag>::value
>
{};
// iterator_traits<Iterator> will only have the nested types if Iterator::iterator_category
// exists. Else iterator_traits<Iterator> will be an empty class. This is a
// conforming extension which allows some programs to compile and behave as
// the client expects instead of failing at compile time.
template <class _Iter>
struct _LIBCPP_TEMPLATE_VIS iterator_traits
: __iterator_traits<_Iter, __has_iterator_typedefs<_Iter>::value> {
using __primary_template = iterator_traits;
};
template<class _Tp>
struct _LIBCPP_TEMPLATE_VIS iterator_traits<_Tp*>
{
typedef ptrdiff_t difference_type;
typedef typename remove_cv<_Tp>::type value_type;
typedef _Tp* pointer;
typedef _Tp& reference;
typedef random_access_iterator_tag iterator_category;
#if _LIBCPP_STD_VER > 17
typedef contiguous_iterator_tag iterator_concept;
#endif
};
template <class _Tp, class _Up, bool = __has_iterator_category<iterator_traits<_Tp> >::value>
struct __has_iterator_category_convertible_to
: public integral_constant<bool, is_convertible<typename iterator_traits<_Tp>::iterator_category, _Up>::value>
{};
template <class _Tp, class _Up>
struct __has_iterator_category_convertible_to<_Tp, _Up, false> : public false_type {};
template <class _Tp>
struct __is_cpp17_input_iterator : public __has_iterator_category_convertible_to<_Tp, input_iterator_tag> {};
template <class _Tp>
struct __is_cpp17_forward_iterator : public __has_iterator_category_convertible_to<_Tp, forward_iterator_tag> {};
template <class _Tp>
struct __is_cpp17_bidirectional_iterator : public __has_iterator_category_convertible_to<_Tp, bidirectional_iterator_tag> {};
template <class _Tp>
struct __is_cpp17_random_access_iterator : public __has_iterator_category_convertible_to<_Tp, random_access_iterator_tag> {};
#if _LIBCPP_STD_VER > 17
template <class _Tp>
struct __is_cpp17_contiguous_iterator : public __has_iterator_category_convertible_to<_Tp, contiguous_iterator_tag> {};
#else
template <class _Tp>
struct __is_cpp17_contiguous_iterator : public false_type {};
#endif
template <class _Tp>
struct __is_exactly_cpp17_input_iterator
: public integral_constant<bool,
__has_iterator_category_convertible_to<_Tp, input_iterator_tag>::value &&
!__has_iterator_category_convertible_to<_Tp, forward_iterator_tag>::value> {};
#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES
template<class _InputIterator>
using __iter_value_type = typename iterator_traits<_InputIterator>::value_type;
template<class _InputIterator>
using __iter_key_type = remove_const_t<typename iterator_traits<_InputIterator>::value_type::first_type>;
template<class _InputIterator>
using __iter_mapped_type = typename iterator_traits<_InputIterator>::value_type::second_type;
template<class _InputIterator>
using __iter_to_alloc_type = pair<
add_const_t<typename iterator_traits<_InputIterator>::value_type::first_type>,
typename iterator_traits<_InputIterator>::value_type::second_type>;
#endif
template<class _Category, class _Tp, class _Distance = ptrdiff_t,
class _Pointer = _Tp*, class _Reference = _Tp&>
struct _LIBCPP_TEMPLATE_VIS iterator
{
typedef _Tp value_type;
typedef _Distance difference_type;
typedef _Pointer pointer;
typedef _Reference reference;
typedef _Category iterator_category;
};
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
void __advance(_InputIter& __i,
typename iterator_traits<_InputIter>::difference_type __n, input_iterator_tag)
{
for (; __n > 0; --__n)
++__i;
}
template <class _BiDirIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
void __advance(_BiDirIter& __i,
typename iterator_traits<_BiDirIter>::difference_type __n, bidirectional_iterator_tag)
{
if (__n >= 0)
for (; __n > 0; --__n)
++__i;
else
for (; __n < 0; ++__n)
--__i;
}
template <class _RandIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
void __advance(_RandIter& __i,
typename iterator_traits<_RandIter>::difference_type __n, random_access_iterator_tag)
{
__i += __n;
}
template <class _InputIter, class _Distance>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
void advance(_InputIter& __i, _Distance __orig_n)
{
_LIBCPP_ASSERT(__orig_n >= 0 || __is_cpp17_bidirectional_iterator<_InputIter>::value,
"Attempt to advance(it, n) with negative n on a non-bidirectional iterator");
typedef decltype(__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
__advance(__i, __n, typename iterator_traits<_InputIter>::iterator_category());
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename iterator_traits<_InputIter>::difference_type
__distance(_InputIter __first, _InputIter __last, input_iterator_tag)
{
typename iterator_traits<_InputIter>::difference_type __r(0);
for (; __first != __last; ++__first)
++__r;
return __r;
}
template <class _RandIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename iterator_traits<_RandIter>::difference_type
__distance(_RandIter __first, _RandIter __last, random_access_iterator_tag)
{
return __last - __first;
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename iterator_traits<_InputIter>::difference_type
distance(_InputIter __first, _InputIter __last)
{
return __distance(__first, __last, typename iterator_traits<_InputIter>::iterator_category());
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename enable_if
<
__is_cpp17_input_iterator<_InputIter>::value,
_InputIter
>::type
next(_InputIter __x,
typename iterator_traits<_InputIter>::difference_type __n = 1)
{
_LIBCPP_ASSERT(__n >= 0 || __is_cpp17_bidirectional_iterator<_InputIter>::value,
"Attempt to next(it, n) with negative n on a non-bidirectional iterator");
_VSTD::advance(__x, __n);
return __x;
}
template <class _InputIter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
typename enable_if
<
__is_cpp17_input_iterator<_InputIter>::value,
_InputIter
>::type
prev(_InputIter __x,
typename iterator_traits<_InputIter>::difference_type __n = 1)
{
_LIBCPP_ASSERT(__n <= 0 || __is_cpp17_bidirectional_iterator<_InputIter>::value,
"Attempt to prev(it, n) with a positive n on a non-bidirectional iterator");
_VSTD::advance(__x, -__n);
return __x;
}
template <class _Tp, class = void>
struct __is_stashing_iterator : false_type {};
template <class _Tp>
struct __is_stashing_iterator<_Tp, typename __void_t<typename _Tp::__stashing_iterator_tag>::type>
: true_type {};
template <class _Iter>
class _LIBCPP_TEMPLATE_VIS reverse_iterator
: public iterator<typename iterator_traits<_Iter>::iterator_category,
typename iterator_traits<_Iter>::value_type,
typename iterator_traits<_Iter>::difference_type,
typename iterator_traits<_Iter>::pointer,
typename iterator_traits<_Iter>::reference>
{
private:
/*mutable*/ _Iter __t; // no longer used as of LWG #2360, not removed due to ABI break
static_assert(!__is_stashing_iterator<_Iter>::value,
"The specified iterator type cannot be used with reverse_iterator; "
"Using stashing iterators with reverse_iterator causes undefined behavior");
protected:
_Iter current;
public:
typedef _Iter iterator_type;
typedef typename iterator_traits<_Iter>::difference_type difference_type;
typedef typename iterator_traits<_Iter>::reference reference;
typedef typename iterator_traits<_Iter>::pointer pointer;
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator() : __t(), current() {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
explicit reverse_iterator(_Iter __x) : __t(__x), current(__x) {}
template <class _Up>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator(const reverse_iterator<_Up>& __u) : __t(__u.base()), current(__u.base()) {}
template <class _Up>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator& operator=(const reverse_iterator<_Up>& __u)
{ __t = current = __u.base(); return *this; }
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
_Iter base() const {return current;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reference operator*() const {_Iter __tmp = current; return *--__tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
pointer operator->() const {return _VSTD::addressof(operator*());}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator& operator++() {--current; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator operator++(int) {reverse_iterator __tmp(*this); --current; return __tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator& operator--() {++current; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator operator--(int) {reverse_iterator __tmp(*this); ++current; return __tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator operator+ (difference_type __n) const {return reverse_iterator(current - __n);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator& operator+=(difference_type __n) {current -= __n; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator operator- (difference_type __n) const {return reverse_iterator(current + __n);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator& operator-=(difference_type __n) {current += __n; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reference operator[](difference_type __n) const {return *(*this + __n);}
};
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator==(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() == __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator<(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() > __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator!=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() != __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator>(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() < __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator>=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() <= __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator<=(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __x.base() >= __y.base();
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto
operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
-> decltype(__y.base() - __x.base())
{
return __y.base() - __x.base();
}
#else
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
typename reverse_iterator<_Iter1>::difference_type
operator-(const reverse_iterator<_Iter1>& __x, const reverse_iterator<_Iter2>& __y)
{
return __y.base() - __x.base();
}
#endif
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator<_Iter>
operator+(typename reverse_iterator<_Iter>::difference_type __n, const reverse_iterator<_Iter>& __x)
{
return reverse_iterator<_Iter>(__x.base() - __n);
}
#if _LIBCPP_STD_VER > 11
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator<_Iter> make_reverse_iterator(_Iter __i)
{
return reverse_iterator<_Iter>(__i);
}
#endif
template <class _Container>
class _LIBCPP_TEMPLATE_VIS back_insert_iterator
: public iterator<output_iterator_tag,
void,
void,
void,
void>
{
protected:
_Container* container;
public:
typedef _Container container_type;
_LIBCPP_INLINE_VISIBILITY explicit back_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(const typename _Container::value_type& __value_)
{container->push_back(__value_); return *this;}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator=(typename _Container::value_type&& __value_)
{container->push_back(_VSTD::move(__value_)); return *this;}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY back_insert_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY back_insert_iterator operator++(int) {return *this;}
};
template <class _Container>
inline _LIBCPP_INLINE_VISIBILITY
back_insert_iterator<_Container>
back_inserter(_Container& __x)
{
return back_insert_iterator<_Container>(__x);
}
template <class _Container>
class _LIBCPP_TEMPLATE_VIS front_insert_iterator
: public iterator<output_iterator_tag,
void,
void,
void,
void>
{
protected:
_Container* container;
public:
typedef _Container container_type;
_LIBCPP_INLINE_VISIBILITY explicit front_insert_iterator(_Container& __x) : container(_VSTD::addressof(__x)) {}
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(const typename _Container::value_type& __value_)
{container->push_front(__value_); return *this;}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator=(typename _Container::value_type&& __value_)
{container->push_front(_VSTD::move(__value_)); return *this;}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY front_insert_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY front_insert_iterator operator++(int) {return *this;}
};
template <class _Container>
inline _LIBCPP_INLINE_VISIBILITY
front_insert_iterator<_Container>
front_inserter(_Container& __x)
{
return front_insert_iterator<_Container>(__x);
}
template <class _Container>
class _LIBCPP_TEMPLATE_VIS insert_iterator
: public iterator<output_iterator_tag,
void,
void,
void,
void>
{
protected:
_Container* container;
typename _Container::iterator iter;
public:
typedef _Container container_type;
_LIBCPP_INLINE_VISIBILITY insert_iterator(_Container& __x, typename _Container::iterator __i)
: container(_VSTD::addressof(__x)), iter(__i) {}
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(const typename _Container::value_type& __value_)
{iter = container->insert(iter, __value_); ++iter; return *this;}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator=(typename _Container::value_type&& __value_)
{iter = container->insert(iter, _VSTD::move(__value_)); ++iter; return *this;}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY insert_iterator& operator++(int) {return *this;}
};
template <class _Container>
inline _LIBCPP_INLINE_VISIBILITY
insert_iterator<_Container>
inserter(_Container& __x, typename _Container::iterator __i)
{
return insert_iterator<_Container>(__x, __i);
}
template <class _Tp, class _CharT = char,
class _Traits = char_traits<_CharT>, class _Distance = ptrdiff_t>
class _LIBCPP_TEMPLATE_VIS istream_iterator
: public iterator<input_iterator_tag, _Tp, _Distance, const _Tp*, const _Tp&>
{
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef basic_istream<_CharT,_Traits> istream_type;
private:
istream_type* __in_stream_;
_Tp __value_;
public:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istream_iterator() : __in_stream_(0), __value_() {}
_LIBCPP_INLINE_VISIBILITY istream_iterator(istream_type& __s) : __in_stream_(_VSTD::addressof(__s))
{
if (!(*__in_stream_ >> __value_))
__in_stream_ = 0;
}
_LIBCPP_INLINE_VISIBILITY const _Tp& operator*() const {return __value_;}
_LIBCPP_INLINE_VISIBILITY const _Tp* operator->() const {return _VSTD::addressof((operator*()));}
_LIBCPP_INLINE_VISIBILITY istream_iterator& operator++()
{
if (!(*__in_stream_ >> __value_))
__in_stream_ = 0;
return *this;
}
_LIBCPP_INLINE_VISIBILITY istream_iterator operator++(int)
{istream_iterator __t(*this); ++(*this); return __t;}
template <class _Up, class _CharU, class _TraitsU, class _DistanceU>
friend _LIBCPP_INLINE_VISIBILITY
bool
operator==(const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __x,
const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __y);
template <class _Up, class _CharU, class _TraitsU, class _DistanceU>
friend _LIBCPP_INLINE_VISIBILITY
bool
operator==(const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __x,
const istream_iterator<_Up, _CharU, _TraitsU, _DistanceU>& __y);
};
template <class _Tp, class _CharT, class _Traits, class _Distance>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator==(const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __x,
const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __y)
{
return __x.__in_stream_ == __y.__in_stream_;
}
template <class _Tp, class _CharT, class _Traits, class _Distance>
inline _LIBCPP_INLINE_VISIBILITY
bool
operator!=(const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __x,
const istream_iterator<_Tp, _CharT, _Traits, _Distance>& __y)
{
return !(__x == __y);
}
template <class _Tp, class _CharT = char, class _Traits = char_traits<_CharT> >
class _LIBCPP_TEMPLATE_VIS ostream_iterator
: public iterator<output_iterator_tag, void, void, void, void>
{
public:
typedef output_iterator_tag iterator_category;
typedef void value_type;
#if _LIBCPP_STD_VER > 17
typedef std::ptrdiff_t difference_type;
#else
typedef void difference_type;
#endif
typedef void pointer;
typedef void reference;
typedef _CharT char_type;
typedef _Traits traits_type;
typedef basic_ostream<_CharT, _Traits> ostream_type;
private:
ostream_type* __out_stream_;
const char_type* __delim_;
public:
_LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s) _NOEXCEPT
: __out_stream_(_VSTD::addressof(__s)), __delim_(0) {}
_LIBCPP_INLINE_VISIBILITY ostream_iterator(ostream_type& __s, const _CharT* __delimiter) _NOEXCEPT
: __out_stream_(_VSTD::addressof(__s)), __delim_(__delimiter) {}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator=(const _Tp& __value_)
{
*__out_stream_ << __value_;
if (__delim_)
*__out_stream_ << __delim_;
return *this;
}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostream_iterator& operator++(int) {return *this;}
};
template<class _CharT, class _Traits>
class _LIBCPP_TEMPLATE_VIS istreambuf_iterator
: public iterator<input_iterator_tag, _CharT,
typename _Traits::off_type, _CharT*,
_CharT>
{
public:
typedef _CharT char_type;
typedef _Traits traits_type;
typedef typename _Traits::int_type int_type;
typedef basic_streambuf<_CharT,_Traits> streambuf_type;
typedef basic_istream<_CharT,_Traits> istream_type;
private:
mutable streambuf_type* __sbuf_;
class __proxy
{
char_type __keep_;
streambuf_type* __sbuf_;
_LIBCPP_INLINE_VISIBILITY __proxy(char_type __c, streambuf_type* __s)
: __keep_(__c), __sbuf_(__s) {}
friend class istreambuf_iterator;
public:
_LIBCPP_INLINE_VISIBILITY char_type operator*() const {return __keep_;}
};
_LIBCPP_INLINE_VISIBILITY
bool __test_for_eof() const
{
if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sgetc(), traits_type::eof()))
__sbuf_ = 0;
return __sbuf_ == 0;
}
public:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR istreambuf_iterator() _NOEXCEPT : __sbuf_(0) {}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator(istream_type& __s) _NOEXCEPT
: __sbuf_(__s.rdbuf()) {}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator(streambuf_type* __s) _NOEXCEPT
: __sbuf_(__s) {}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator(const __proxy& __p) _NOEXCEPT
: __sbuf_(__p.__sbuf_) {}
_LIBCPP_INLINE_VISIBILITY char_type operator*() const
{return static_cast<char_type>(__sbuf_->sgetc());}
_LIBCPP_INLINE_VISIBILITY istreambuf_iterator& operator++()
{
__sbuf_->sbumpc();
return *this;
}
_LIBCPP_INLINE_VISIBILITY __proxy operator++(int)
{
return __proxy(__sbuf_->sbumpc(), __sbuf_);
}
_LIBCPP_INLINE_VISIBILITY bool equal(const istreambuf_iterator& __b) const
{return __test_for_eof() == __b.__test_for_eof();}
};
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
bool operator==(const istreambuf_iterator<_CharT,_Traits>& __a,
const istreambuf_iterator<_CharT,_Traits>& __b)
{return __a.equal(__b);}
template <class _CharT, class _Traits>
inline _LIBCPP_INLINE_VISIBILITY
bool operator!=(const istreambuf_iterator<_CharT,_Traits>& __a,
const istreambuf_iterator<_CharT,_Traits>& __b)
{return !__a.equal(__b);}
template <class _CharT, class _Traits>
class _LIBCPP_TEMPLATE_VIS ostreambuf_iterator
: public iterator<output_iterator_tag, void, void, void, void>
{
public:
typedef output_iterator_tag iterator_category;
typedef void value_type;
#if _LIBCPP_STD_VER > 17
typedef std::ptrdiff_t difference_type;
#else
typedef void difference_type;
#endif
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;
private:
streambuf_type* __sbuf_;
public:
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(ostream_type& __s) _NOEXCEPT
: __sbuf_(__s.rdbuf()) {}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator(streambuf_type* __s) _NOEXCEPT
: __sbuf_(__s) {}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator=(_CharT __c)
{
if (__sbuf_ && traits_type::eq_int_type(__sbuf_->sputc(__c), traits_type::eof()))
__sbuf_ = 0;
return *this;
}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator*() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++() {return *this;}
_LIBCPP_INLINE_VISIBILITY ostreambuf_iterator& operator++(int) {return *this;}
_LIBCPP_INLINE_VISIBILITY bool failed() const _NOEXCEPT {return __sbuf_ == 0;}
template <class _Ch, class _Tr>
friend
_LIBCPP_HIDDEN
ostreambuf_iterator<_Ch, _Tr>
__pad_and_output(ostreambuf_iterator<_Ch, _Tr> __s,
const _Ch* __ob, const _Ch* __op, const _Ch* __oe,
ios_base& __iob, _Ch __fl);
};
template <class _Iter>
class _LIBCPP_TEMPLATE_VIS move_iterator
{
private:
_Iter __i;
public:
typedef _Iter iterator_type;
typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
typedef typename iterator_traits<iterator_type>::value_type value_type;
typedef typename iterator_traits<iterator_type>::difference_type difference_type;
typedef iterator_type pointer;
#ifndef _LIBCPP_CXX03_LANG
typedef typename iterator_traits<iterator_type>::reference __reference;
typedef typename conditional<
is_reference<__reference>::value,
typename remove_reference<__reference>::type&&,
__reference
>::type reference;
#else
typedef typename iterator_traits<iterator_type>::reference reference;
#endif
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator() : __i() {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
explicit move_iterator(_Iter __x) : __i(__x) {}
template <class _Up>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator(const move_iterator<_Up>& __u) : __i(__u.base()) {}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14 _Iter base() const {return __i;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reference operator*() const { return static_cast<reference>(*__i); }
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
pointer operator->() const { return __i;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator& operator++() {++__i; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator operator++(int) {move_iterator __tmp(*this); ++__i; return __tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator& operator--() {--__i; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator operator--(int) {move_iterator __tmp(*this); --__i; return __tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator operator+ (difference_type __n) const {return move_iterator(__i + __n);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator& operator+=(difference_type __n) {__i += __n; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator operator- (difference_type __n) const {return move_iterator(__i - __n);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator& operator-=(difference_type __n) {__i -= __n; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reference operator[](difference_type __n) const { return static_cast<reference>(__i[__n]); }
};
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator==(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() == __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator<(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() < __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator!=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() != __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator>(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() > __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator>=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() >= __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
bool
operator<=(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() <= __y.base();
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto
operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
-> decltype(__x.base() - __y.base())
{
return __x.base() - __y.base();
}
#else
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY
typename move_iterator<_Iter1>::difference_type
operator-(const move_iterator<_Iter1>& __x, const move_iterator<_Iter2>& __y)
{
return __x.base() - __y.base();
}
#endif
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator<_Iter>
operator+(typename move_iterator<_Iter>::difference_type __n, const move_iterator<_Iter>& __x)
{
return move_iterator<_Iter>(__x.base() + __n);
}
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
move_iterator<_Iter>
make_move_iterator(_Iter __i)
{
return move_iterator<_Iter>(__i);
}
// __wrap_iter
template <class _Iter> class __wrap_iter;
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
#ifndef _LIBCPP_CXX03_LANG
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
auto
operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
-> decltype(__x.base() - __y.base());
#else
template <class _Iter1, class _Iter2>
_LIBCPP_INLINE_VISIBILITY
typename __wrap_iter<_Iter1>::difference_type
operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
#endif
template <class _Iter>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
__wrap_iter<_Iter>
operator+(typename __wrap_iter<_Iter>::difference_type, __wrap_iter<_Iter>) _NOEXCEPT;
template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 copy(_Ip, _Ip, _Op);
template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 copy_backward(_B1, _B1, _B2);
template <class _Ip, class _Op> _Op _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 move(_Ip, _Ip, _Op);
template <class _B1, class _B2> _B2 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 move_backward(_B1, _B1, _B2);
#if _LIBCPP_DEBUG_LEVEL < 2
template <class _Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
is_trivially_copy_assignable<_Tp>::value,
_Tp*
>::type
__unwrap_iter(__wrap_iter<_Tp*>);
#else
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
is_trivially_copy_assignable<_Tp>::value,
__wrap_iter<_Tp*>
>::type
__unwrap_iter(__wrap_iter<_Tp*> __i);
#endif
template <class _Iter>
class __wrap_iter
{
public:
typedef _Iter iterator_type;
typedef typename iterator_traits<iterator_type>::iterator_category iterator_category;
typedef typename iterator_traits<iterator_type>::value_type value_type;
typedef typename iterator_traits<iterator_type>::difference_type difference_type;
typedef typename iterator_traits<iterator_type>::pointer pointer;
typedef typename iterator_traits<iterator_type>::reference reference;
private:
iterator_type __i;
public:
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter() _NOEXCEPT
#if _LIBCPP_STD_VER > 11
: __i{}
#endif
{
#if _LIBCPP_DEBUG_LEVEL == 2
__get_db()->__insert_i(this);
#endif
}
template <class _Up> _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
__wrap_iter(const __wrap_iter<_Up>& __u,
typename enable_if<is_convertible<_Up, iterator_type>::value>::type* = 0) _NOEXCEPT
: __i(__u.base())
{
#if _LIBCPP_DEBUG_LEVEL == 2
__get_db()->__iterator_copy(this, &__u);
#endif
}
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
__wrap_iter(const __wrap_iter& __x)
: __i(__x.base())
{
__get_db()->__iterator_copy(this, &__x);
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
__wrap_iter& operator=(const __wrap_iter& __x)
{
if (this != &__x)
{
__get_db()->__iterator_copy(this, &__x);
__i = __x.__i;
}
return *this;
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
~__wrap_iter()
{
__get_db()->__erase_i(this);
}
#endif
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG reference operator*() const _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
"Attempted to dereference a non-dereferenceable iterator");
#endif
return *__i;
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG pointer operator->() const _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
"Attempted to dereference a non-dereferenceable iterator");
#endif
return (pointer)_VSTD::addressof(*__i);
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter& operator++() _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__dereferenceable(this),
"Attempted to increment non-incrementable iterator");
#endif
++__i;
return *this;
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter operator++(int) _NOEXCEPT
{__wrap_iter __tmp(*this); ++(*this); return __tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter& operator--() _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__decrementable(this),
"Attempted to decrement non-decrementable iterator");
#endif
--__i;
return *this;
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter operator--(int) _NOEXCEPT
{__wrap_iter __tmp(*this); --(*this); return __tmp;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter operator+ (difference_type __n) const _NOEXCEPT
{__wrap_iter __w(*this); __w += __n; return __w;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter& operator+=(difference_type __n) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__addable(this, __n),
"Attempted to add/subtract iterator outside of valid range");
#endif
__i += __n;
return *this;
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter operator- (difference_type __n) const _NOEXCEPT
{return *this + (-__n);}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter& operator-=(difference_type __n) _NOEXCEPT
{*this += -__n; return *this;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG reference operator[](difference_type __n) const _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__subscriptable(this, __n),
"Attempted to subscript iterator outside of valid range");
#endif
return __i[__n];
}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG iterator_type base() const _NOEXCEPT {return __i;}
private:
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter(const void* __p, iterator_type __x) : __i(__x)
{
__get_db()->__insert_ic(this, __p);
}
#else
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG __wrap_iter(iterator_type __x) _NOEXCEPT : __i(__x) {}
#endif
template <class _Up> friend class __wrap_iter;
template <class _CharT, class _Traits, class _Alloc> friend class basic_string;
template <class _Tp, class _Alloc> friend class _LIBCPP_TEMPLATE_VIS vector;
template <class _Tp, size_t> friend class _LIBCPP_TEMPLATE_VIS span;
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
bool
operator==(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
bool
operator<(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
bool
operator!=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
bool
operator>(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
bool
operator>=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
bool
operator<=(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
#ifndef _LIBCPP_CXX03_LANG
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
auto
operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
-> decltype(__x.base() - __y.base());
#else
template <class _Iter1, class _Iter2>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
typename __wrap_iter<_Iter1>::difference_type
operator-(const __wrap_iter<_Iter1>&, const __wrap_iter<_Iter2>&) _NOEXCEPT;
#endif
template <class _Iter1>
_LIBCPP_CONSTEXPR_IF_NODEBUG friend
__wrap_iter<_Iter1>
operator+(typename __wrap_iter<_Iter1>::difference_type, __wrap_iter<_Iter1>) _NOEXCEPT;
template <class _Ip, class _Op> friend _LIBCPP_CONSTEXPR_AFTER_CXX17 _Op copy(_Ip, _Ip, _Op);
template <class _B1, class _B2> friend _LIBCPP_CONSTEXPR_AFTER_CXX17 _B2 copy_backward(_B1, _B1, _B2);
template <class _Ip, class _Op> friend _LIBCPP_CONSTEXPR_AFTER_CXX17 _Op move(_Ip, _Ip, _Op);
template <class _B1, class _B2> friend _LIBCPP_CONSTEXPR_AFTER_CXX17 _B2 move_backward(_B1, _B1, _B2);
#if _LIBCPP_DEBUG_LEVEL < 2
template <class _Tp>
_LIBCPP_CONSTEXPR friend
typename enable_if
<
is_trivially_copy_assignable<_Tp>::value,
_Tp*
>::type
__unwrap_iter(__wrap_iter<_Tp*>);
#else
template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR friend
typename enable_if
<
is_trivially_copy_assignable<_Tp>::value,
__wrap_iter<_Tp*>
>::type
__unwrap_iter(__wrap_iter<_Tp*> __i);
#endif
};
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator==(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return __x.base() == __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator<(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
"Attempted to compare incomparable iterators");
#endif
return __x.base() < __y.base();
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return !(__x == __y);
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return __y < __x;
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return !(__x < __y);
}
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
return !(__y < __x);
}
template <class _Iter1>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator!=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
{
return !(__x == __y);
}
template <class _Iter1>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator>(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
{
return __y < __x;
}
template <class _Iter1>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator>=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
{
return !(__x < __y);
}
template <class _Iter1>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
bool
operator<=(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter1>& __y) _NOEXCEPT
{
return !(__y < __x);
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
auto
operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
-> decltype(__x.base() - __y.base())
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
"Attempted to subtract incompatible iterators");
#endif
return __x.base() - __y.base();
}
#else
template <class _Iter1, class _Iter2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
typename __wrap_iter<_Iter1>::difference_type
operator-(const __wrap_iter<_Iter1>& __x, const __wrap_iter<_Iter2>& __y) _NOEXCEPT
{
#if _LIBCPP_DEBUG_LEVEL == 2
_LIBCPP_ASSERT(__get_const_db()->__less_than_comparable(&__x, &__y),
"Attempted to subtract incompatible iterators");
#endif
return __x.base() - __y.base();
}
#endif
template <class _Iter>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_IF_NODEBUG
__wrap_iter<_Iter>
operator+(typename __wrap_iter<_Iter>::difference_type __n,
__wrap_iter<_Iter> __x) _NOEXCEPT
{
__x += __n;
return __x;
}
template <class _Iter>
struct __libcpp_is_trivial_iterator
: public _LIBCPP_BOOL_CONSTANT(is_pointer<_Iter>::value) {};
template <class _Iter>
struct __libcpp_is_trivial_iterator<move_iterator<_Iter> >
: public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {};
template <class _Iter>
struct __libcpp_is_trivial_iterator<reverse_iterator<_Iter> >
: public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {};
template <class _Iter>
struct __libcpp_is_trivial_iterator<__wrap_iter<_Iter> >
: public _LIBCPP_BOOL_CONSTANT(__libcpp_is_trivial_iterator<_Iter>::value) {};
template <class _Tp, size_t _Np>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp*
begin(_Tp (&__array)[_Np])
{
return __array;
}
template <class _Tp, size_t _Np>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
_Tp*
end(_Tp (&__array)[_Np])
{
return __array + _Np;
}
#if !defined(_LIBCPP_CXX03_LANG)
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto
begin(_Cp& __c) -> decltype(__c.begin())
{
return __c.begin();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto
begin(const _Cp& __c) -> decltype(__c.begin())
{
return __c.begin();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto
end(_Cp& __c) -> decltype(__c.end())
{
return __c.end();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto
end(const _Cp& __c) -> decltype(__c.end())
{
return __c.end();
}
#if _LIBCPP_STD_VER > 11
template <class _Tp, size_t _Np>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator<_Tp*> rbegin(_Tp (&__array)[_Np])
{
return reverse_iterator<_Tp*>(__array + _Np);
}
template <class _Tp, size_t _Np>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator<_Tp*> rend(_Tp (&__array)[_Np])
{
return reverse_iterator<_Tp*>(__array);
}
template <class _Ep>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator<const _Ep*> rbegin(initializer_list<_Ep> __il)
{
return reverse_iterator<const _Ep*>(__il.end());
}
template <class _Ep>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
reverse_iterator<const _Ep*> rend(initializer_list<_Ep> __il)
{
return reverse_iterator<const _Ep*>(__il.begin());
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
auto cbegin(const _Cp& __c) -> decltype(_VSTD::begin(__c))
{
return _VSTD::begin(__c);
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
auto cend(const _Cp& __c) -> decltype(_VSTD::end(__c))
{
return _VSTD::end(__c);
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto rbegin(_Cp& __c) -> decltype(__c.rbegin())
{
return __c.rbegin();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto rbegin(const _Cp& __c) -> decltype(__c.rbegin())
{
return __c.rbegin();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto rend(_Cp& __c) -> decltype(__c.rend())
{
return __c.rend();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto rend(const _Cp& __c) -> decltype(__c.rend())
{
return __c.rend();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto crbegin(const _Cp& __c) -> decltype(_VSTD::rbegin(__c))
{
return _VSTD::rbegin(__c);
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX14
auto crend(const _Cp& __c) -> decltype(_VSTD::rend(__c))
{
return _VSTD::rend(__c);
}
#endif
#else // defined(_LIBCPP_CXX03_LANG)
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY
typename _Cp::iterator
begin(_Cp& __c)
{
return __c.begin();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY
typename _Cp::const_iterator
begin(const _Cp& __c)
{
return __c.begin();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY
typename _Cp::iterator
end(_Cp& __c)
{
return __c.end();
}
template <class _Cp>
_LIBCPP_INLINE_VISIBILITY
typename _Cp::const_iterator
end(const _Cp& __c)
{
return __c.end();
}
#endif // !defined(_LIBCPP_CXX03_LANG)
#if _LIBCPP_STD_VER > 14
// #if _LIBCPP_STD_VER > 11
// template <>
// struct _LIBCPP_TEMPLATE_VIS plus<void>
// {
// template <class _T1, class _T2>
// _LIBCPP_CONSTEXPR_AFTER_CXX11 _LIBCPP_INLINE_VISIBILITY
// auto operator()(_T1&& __t, _T2&& __u) const
// _NOEXCEPT_(noexcept(_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u)))
// -> decltype (_VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u))
// { return _VSTD::forward<_T1>(__t) + _VSTD::forward<_T2>(__u); }
// typedef void is_transparent;
// };
// #endif
template <class _Cont>
_LIBCPP_INLINE_VISIBILITY
constexpr auto size(const _Cont& __c)
_NOEXCEPT_(noexcept(__c.size()))
-> decltype (__c.size())
{ return __c.size(); }
template <class _Tp, size_t _Sz>
_LIBCPP_INLINE_VISIBILITY
constexpr size_t size(const _Tp (&)[_Sz]) noexcept { return _Sz; }
#if _LIBCPP_STD_VER > 17
template <class _Cont>
_LIBCPP_INLINE_VISIBILITY
constexpr auto ssize(const _Cont& __c)
_NOEXCEPT_(noexcept(static_cast<common_type_t<ptrdiff_t, make_signed_t<decltype(__c.size())>>>(__c.size())))
-> common_type_t<ptrdiff_t, make_signed_t<decltype(__c.size())>>
{ return static_cast<common_type_t<ptrdiff_t, make_signed_t<decltype(__c.size())>>>(__c.size()); }
template <class _Tp, ptrdiff_t _Sz>
_LIBCPP_INLINE_VISIBILITY
constexpr ptrdiff_t ssize(const _Tp (&)[_Sz]) noexcept { return _Sz; }
#endif
template <class _Cont>
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
constexpr auto empty(const _Cont& __c)
_NOEXCEPT_(noexcept(__c.empty()))
-> decltype (__c.empty())
{ return __c.empty(); }
template <class _Tp, size_t _Sz>
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
constexpr bool empty(const _Tp (&)[_Sz]) noexcept { return false; }
template <class _Ep>
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
constexpr bool empty(initializer_list<_Ep> __il) noexcept { return __il.size() == 0; }
template <class _Cont> constexpr
_LIBCPP_INLINE_VISIBILITY
auto data(_Cont& __c)
_NOEXCEPT_(noexcept(__c.data()))
-> decltype (__c.data())
{ return __c.data(); }
template <class _Cont> constexpr
_LIBCPP_INLINE_VISIBILITY
auto data(const _Cont& __c)
_NOEXCEPT_(noexcept(__c.data()))
-> decltype (__c.data())
{ return __c.data(); }
template <class _Tp, size_t _Sz>
_LIBCPP_INLINE_VISIBILITY
constexpr _Tp* data(_Tp (&__array)[_Sz]) noexcept { return __array; }
template <class _Ep>
_LIBCPP_INLINE_VISIBILITY
constexpr const _Ep* data(initializer_list<_Ep> __il) noexcept { return __il.begin(); }
#endif
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_ITERATOR
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