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vector
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// -*- 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_VECTOR
#define _LIBCPP_VECTOR
// clang-format off
/*
vector synopsis
namespace std
{
template <class T, class Allocator = allocator<T> >
class vector
{
public:
typedef T value_type;
typedef Allocator allocator_type;
typedef typename allocator_type::reference reference;
typedef typename allocator_type::const_reference const_reference;
typedef implementation-defined iterator;
typedef implementation-defined const_iterator;
typedef typename allocator_type::size_type size_type;
typedef typename allocator_type::difference_type difference_type;
typedef typename allocator_type::pointer pointer;
typedef typename allocator_type::const_pointer const_pointer;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
vector()
noexcept(is_nothrow_default_constructible<allocator_type>::value);
explicit vector(const allocator_type&);
explicit vector(size_type n);
explicit vector(size_type n, const allocator_type&); // C++14
vector(size_type n, const value_type& value, const allocator_type& = allocator_type());
template <class InputIterator>
vector(InputIterator first, InputIterator last, const allocator_type& = allocator_type());
template<container-compatible-range<T> R>
constexpr vector(from_range_t, R&& rg, const Allocator& = Allocator()); // C++23
vector(const vector& x);
vector(vector&& x)
noexcept(is_nothrow_move_constructible<allocator_type>::value);
vector(initializer_list<value_type> il);
vector(initializer_list<value_type> il, const allocator_type& a);
~vector();
vector& operator=(const vector& x);
vector& operator=(vector&& x)
noexcept(
allocator_type::propagate_on_container_move_assignment::value ||
allocator_type::is_always_equal::value); // C++17
vector& operator=(initializer_list<value_type> il);
template <class InputIterator>
void assign(InputIterator first, InputIterator last);
template<container-compatible-range<T> R>
constexpr void assign_range(R&& rg); // C++23
void assign(size_type n, const value_type& u);
void assign(initializer_list<value_type> il);
allocator_type get_allocator() const noexcept;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
reverse_iterator rbegin() noexcept;
const_reverse_iterator rbegin() const noexcept;
reverse_iterator rend() noexcept;
const_reverse_iterator rend() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
const_reverse_iterator crbegin() const noexcept;
const_reverse_iterator crend() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
size_type capacity() const noexcept;
bool empty() const noexcept;
void reserve(size_type n);
void shrink_to_fit() noexcept;
reference operator[](size_type n);
const_reference operator[](size_type n) const;
reference at(size_type n);
const_reference at(size_type n) const;
reference front();
const_reference front() const;
reference back();
const_reference back() const;
value_type* data() noexcept;
const value_type* data() const noexcept;
void push_back(const value_type& x);
void push_back(value_type&& x);
template <class... Args>
reference emplace_back(Args&&... args); // reference in C++17
template<container-compatible-range<T> R>
constexpr void append_range(R&& rg); // C++23
void pop_back();
template <class... Args> iterator emplace(const_iterator position, Args&&... args);
iterator insert(const_iterator position, const value_type& x);
iterator insert(const_iterator position, value_type&& x);
iterator insert(const_iterator position, size_type n, const value_type& x);
template <class InputIterator>
iterator insert(const_iterator position, InputIterator first, InputIterator last);
template<container-compatible-range<T> R>
constexpr iterator insert_range(const_iterator position, R&& rg); // C++23
iterator insert(const_iterator position, initializer_list<value_type> il);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
void resize(size_type sz);
void resize(size_type sz, const value_type& c);
void swap(vector&)
noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value ||
allocator_traits<allocator_type>::is_always_equal::value); // C++17
bool __invariants() const;
};
template <class Allocator = allocator<T> >
class vector<bool, Allocator>
{
public:
typedef bool value_type;
typedef Allocator allocator_type;
typedef implementation-defined iterator;
typedef implementation-defined const_iterator;
typedef typename allocator_type::size_type size_type;
typedef typename allocator_type::difference_type difference_type;
typedef iterator pointer;
typedef const_iterator const_pointer;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
class reference
{
public:
reference(const reference&) noexcept;
operator bool() const noexcept;
reference& operator=(bool x) noexcept;
reference& operator=(const reference& x) noexcept;
iterator operator&() const noexcept;
void flip() noexcept;
};
class const_reference
{
public:
const_reference(const reference&) noexcept;
operator bool() const noexcept;
const_iterator operator&() const noexcept;
};
vector()
noexcept(is_nothrow_default_constructible<allocator_type>::value);
explicit vector(const allocator_type&);
explicit vector(size_type n, const allocator_type& a = allocator_type()); // C++14
vector(size_type n, const value_type& value, const allocator_type& = allocator_type());
template <class InputIterator>
vector(InputIterator first, InputIterator last, const allocator_type& = allocator_type());
template<container-compatible-range<bool> R>
constexpr vector(from_range_t, R&& rg, const Allocator& = Allocator());
vector(const vector& x);
vector(vector&& x)
noexcept(is_nothrow_move_constructible<allocator_type>::value);
vector(initializer_list<value_type> il);
vector(initializer_list<value_type> il, const allocator_type& a);
~vector();
vector& operator=(const vector& x);
vector& operator=(vector&& x)
noexcept(
allocator_type::propagate_on_container_move_assignment::value ||
allocator_type::is_always_equal::value); // C++17
vector& operator=(initializer_list<value_type> il);
template <class InputIterator>
void assign(InputIterator first, InputIterator last);
template<container-compatible-range<T> R>
constexpr void assign_range(R&& rg); // C++23
void assign(size_type n, const value_type& u);
void assign(initializer_list<value_type> il);
allocator_type get_allocator() const noexcept;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
reverse_iterator rbegin() noexcept;
const_reverse_iterator rbegin() const noexcept;
reverse_iterator rend() noexcept;
const_reverse_iterator rend() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
const_reverse_iterator crbegin() const noexcept;
const_reverse_iterator crend() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
size_type capacity() const noexcept;
bool empty() const noexcept;
void reserve(size_type n);
void shrink_to_fit() noexcept;
reference operator[](size_type n);
const_reference operator[](size_type n) const;
reference at(size_type n);
const_reference at(size_type n) const;
reference front();
const_reference front() const;
reference back();
const_reference back() const;
void push_back(const value_type& x);
template <class... Args> reference emplace_back(Args&&... args); // C++14; reference in C++17
template<container-compatible-range<T> R>
constexpr void append_range(R&& rg); // C++23
void pop_back();
template <class... Args> iterator emplace(const_iterator position, Args&&... args); // C++14
iterator insert(const_iterator position, const value_type& x);
iterator insert(const_iterator position, size_type n, const value_type& x);
template <class InputIterator>
iterator insert(const_iterator position, InputIterator first, InputIterator last);
template<container-compatible-range<T> R>
constexpr iterator insert_range(const_iterator position, R&& rg); // C++23
iterator insert(const_iterator position, initializer_list<value_type> il);
iterator erase(const_iterator position);
iterator erase(const_iterator first, const_iterator last);
void clear() noexcept;
void resize(size_type sz);
void resize(size_type sz, value_type x);
void swap(vector&)
noexcept(allocator_traits<allocator_type>::propagate_on_container_swap::value ||
allocator_traits<allocator_type>::is_always_equal::value); // C++17
void flip() noexcept;
bool __invariants() const;
};
template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
vector(InputIterator, InputIterator, Allocator = Allocator())
-> vector<typename iterator_traits<InputIterator>::value_type, Allocator>; // C++17
template<ranges::input_range R, class Allocator = allocator<ranges::range_value_t<R>>>
vector(from_range_t, R&&, Allocator = Allocator())
-> vector<ranges::range_value_t<R>, Allocator>; // C++23
template <class Allocator> struct hash<std::vector<bool, Allocator>>;
template <class T, class Allocator> bool operator==(const vector<T,Allocator>& x, const vector<T,Allocator>& y); // constexpr since C++20
template <class T, class Allocator> bool operator!=(const vector<T,Allocator>& x, const vector<T,Allocator>& y); // removed in C++20
template <class T, class Allocator> bool operator< (const vector<T,Allocator>& x, const vector<T,Allocator>& y); // removed in C++20
template <class T, class Allocator> bool operator> (const vector<T,Allocator>& x, const vector<T,Allocator>& y); // removed in C++20
template <class T, class Allocator> bool operator>=(const vector<T,Allocator>& x, const vector<T,Allocator>& y); // removed in C++20
template <class T, class Allocator> bool operator<=(const vector<T,Allocator>& x, const vector<T,Allocator>& y); // removed in C++20
template <class T, class Allocator> constexpr
constexpr synth-three-way-result<T> operator<=>(const vector<T, Allocator>& x,
const vector<T, Allocator>& y); // since C++20
template <class T, class Allocator>
void swap(vector<T,Allocator>& x, vector<T,Allocator>& y)
noexcept(noexcept(x.swap(y)));
template <class T, class Allocator, class U>
typename vector<T, Allocator>::size_type
erase(vector<T, Allocator>& c, const U& value); // since C++20
template <class T, class Allocator, class Predicate>
typename vector<T, Allocator>::size_type
erase_if(vector<T, Allocator>& c, Predicate pred); // since C++20
template<class T>
inline constexpr bool is-vector-bool-reference = see below; // exposition only, since C++23
template<class T, class charT> requires is-vector-bool-reference<T> // Since C++23
struct formatter<T, charT>;
} // std
*/
// clang-format on
#include <__algorithm/copy.h>
#include <__algorithm/equal.h>
#include <__algorithm/fill_n.h>
#include <__algorithm/iterator_operations.h>
#include <__algorithm/lexicographical_compare.h>
#include <__algorithm/lexicographical_compare_three_way.h>
#include <__algorithm/remove.h>
#include <__algorithm/remove_if.h>
#include <__algorithm/rotate.h>
#include <__algorithm/unwrap_iter.h>
#include <__assert> // all public C++ headers provide the assertion handler
#include <__availability>
#include <__bit_reference>
#include <__concepts/same_as.h>
#include <__config>
#include <__format/enable_insertable.h>
#include <__format/formatter.h>
#include <__format/formatter_bool.h>
#include <__functional/hash.h>
#include <__functional/unary_function.h>
#include <__iterator/advance.h>
#include <__iterator/distance.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/reverse_iterator.h>
#include <__iterator/wrap_iter.h>
#include <__memory/addressof.h>
#include <__memory/allocate_at_least.h>
#include <__memory/allocator_traits.h>
#include <__memory/pointer_traits.h>
#include <__memory/swap_allocator.h>
#include <__memory/temp_value.h>
#include <__memory/uninitialized_algorithms.h>
#include <__memory_resource/polymorphic_allocator.h>
#include <__ranges/access.h>
#include <__ranges/concepts.h>
#include <__ranges/container_compatible_range.h>
#include <__ranges/from_range.h>
#include <__ranges/size.h>
#include <__split_buffer>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_constructible.h>
#include <__type_traits/is_nothrow_move_assignable.h>
#include <__type_traits/noexcept_move_assign_container.h>
#include <__type_traits/type_identity.h>
#include <__utility/exception_guard.h>
#include <__utility/forward.h>
#include <__utility/is_pointer_in_range.h>
#include <__utility/move.h>
#include <__utility/pair.h>
#include <__utility/swap.h>
#include <climits>
#include <cstring>
#include <iosfwd> // for forward declaration of vector
#include <limits>
#include <stdexcept>
#include <version>
// standard-mandated includes
// [iterator.range]
#include <__iterator/access.h>
#include <__iterator/data.h>
#include <__iterator/empty.h>
#include <__iterator/reverse_access.h>
#include <__iterator/size.h>
// [vector.syn]
#include <compare>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp, class _Allocator /* = allocator<_Tp> */>
class _LIBCPP_TEMPLATE_VIS vector {
private:
typedef allocator<_Tp> __default_allocator_type;
public:
typedef vector __self;
typedef _Tp value_type;
typedef _Allocator allocator_type;
typedef allocator_traits<allocator_type> __alloc_traits;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename __alloc_traits::size_type size_type;
typedef typename __alloc_traits::difference_type difference_type;
typedef typename __alloc_traits::pointer pointer;
typedef typename __alloc_traits::const_pointer const_pointer;
// TODO: Implement iterator bounds checking without requiring the global database.
typedef __wrap_iter<pointer> iterator;
typedef __wrap_iter<const_pointer> const_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
static_assert((is_same<typename allocator_type::value_type, value_type>::value),
"Allocator::value_type must be same type as value_type");
static_assert(is_same<allocator_type, __rebind_alloc<__alloc_traits, value_type> >::value,
"[allocator.requirements] states that rebinding an allocator to the same type should result in the "
"original allocator");
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector()
_NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value) {}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI explicit vector(const allocator_type& __a)
#if _LIBCPP_STD_VER <= 14
_NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
#else
_NOEXCEPT
#endif
: __end_cap_(nullptr, __a) {
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI explicit vector(size_type __n);
#if _LIBCPP_STD_VER >= 14
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI explicit vector(size_type __n, const allocator_type& __a);
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector(size_type __n, const value_type& __x);
template <__enable_if_t<__is_allocator<_Allocator>::value, int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
vector(size_type __n, const value_type& __x, const allocator_type& __a)
: __end_cap_(nullptr, __a) {
if (__n > 0) {
__vallocate(__n);
__construct_at_end(__n, __x);
}
}
template <class _InputIterator,
__enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value &&
is_constructible<value_type, typename iterator_traits<_InputIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector(_InputIterator __first, _InputIterator __last);
template <class _InputIterator,
__enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value &&
is_constructible<value_type, typename iterator_traits<_InputIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
vector(_InputIterator __first, _InputIterator __last, const allocator_type& __a);
template <
class _ForwardIterator,
__enable_if_t<__has_forward_iterator_category<_ForwardIterator>::value &&
is_constructible<value_type, typename iterator_traits<_ForwardIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector(_ForwardIterator __first, _ForwardIterator __last);
template <
class _ForwardIterator,
__enable_if_t<__has_forward_iterator_category<_ForwardIterator>::value &&
is_constructible<value_type, typename iterator_traits<_ForwardIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
vector(_ForwardIterator __first, _ForwardIterator __last, const allocator_type& __a);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr vector(
from_range_t, _Range&& __range, const allocator_type& __alloc = allocator_type())
: __end_cap_(nullptr, __alloc) {
if constexpr (ranges::forward_range<_Range> || ranges::sized_range<_Range>) {
auto __n = static_cast<size_type>(ranges::distance(__range));
__init_with_size(ranges::begin(__range), ranges::end(__range), __n);
} else {
__init_with_sentinel(ranges::begin(__range), ranges::end(__range));
}
}
#endif
private:
class __destroy_vector {
public:
_LIBCPP_CONSTEXPR _LIBCPP_HIDE_FROM_ABI __destroy_vector(vector& __vec) : __vec_(__vec) {}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void operator()() {
if (__vec_.__begin_ != nullptr) {
__vec_.__clear();
__vec_.__annotate_delete();
__alloc_traits::deallocate(__vec_.__alloc(), __vec_.__begin_, __vec_.capacity());
}
}
private:
vector& __vec_;
};
public:
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI ~vector() { __destroy_vector (*this)(); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector(const vector& __x);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
vector(const vector& __x, const __type_identity_t<allocator_type>& __a);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector& operator=(const vector& __x);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector(initializer_list<value_type> __il);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
vector(initializer_list<value_type> __il, const allocator_type& __a);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector& operator=(initializer_list<value_type> __il) {
assign(__il.begin(), __il.end());
return *this;
}
#endif // !_LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector(vector&& __x)
#if _LIBCPP_STD_VER >= 17
noexcept;
#else
_NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value);
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
vector(vector&& __x, const __type_identity_t<allocator_type>& __a);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI vector& operator=(vector&& __x)
_NOEXCEPT_(__noexcept_move_assign_container<_Allocator, __alloc_traits>::value);
template <class _InputIterator,
__enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value &&
is_constructible<value_type, typename iterator_traits<_InputIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void assign(_InputIterator __first, _InputIterator __last);
template <
class _ForwardIterator,
__enable_if_t<__has_forward_iterator_category<_ForwardIterator>::value &&
is_constructible<value_type, typename iterator_traits<_ForwardIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void assign(_ForwardIterator __first, _ForwardIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr void assign_range(_Range&& __range) {
if constexpr (ranges::forward_range<_Range> || ranges::sized_range<_Range>) {
auto __n = static_cast<size_type>(ranges::distance(__range));
__assign_with_size(ranges::begin(__range), ranges::end(__range), __n);
} else {
__assign_with_sentinel(ranges::begin(__range), ranges::end(__range));
}
}
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void assign(size_type __n, const_reference __u);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void assign(initializer_list<value_type> __il) {
assign(__il.begin(), __il.end());
}
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT {
return this->__alloc();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI reverse_iterator rbegin() _NOEXCEPT {
return reverse_iterator(end());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reverse_iterator rbegin() const _NOEXCEPT {
return const_reverse_iterator(end());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI reverse_iterator rend() _NOEXCEPT {
return reverse_iterator(begin());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reverse_iterator rend() const _NOEXCEPT {
return const_reverse_iterator(begin());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return begin(); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return end(); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reverse_iterator crbegin() const _NOEXCEPT {
return rbegin();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reverse_iterator crend() const _NOEXCEPT { return rend(); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT {
return static_cast<size_type>(this->__end_ - this->__begin_);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI size_type capacity() const _NOEXCEPT {
return static_cast<size_type>(__end_cap() - this->__begin_);
}
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT {
return this->__begin_ == this->__end_;
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void reserve(size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void shrink_to_fit() _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI reference operator[](size_type __n) _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reference operator[](size_type __n) const _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI reference at(size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reference at(size_type __n) const;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI reference front() _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "front() called on an empty vector");
return *this->__begin_;
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reference front() const _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "front() called on an empty vector");
return *this->__begin_;
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI reference back() _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "back() called on an empty vector");
return *(this->__end_ - 1);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_reference back() const _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "back() called on an empty vector");
return *(this->__end_ - 1);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI value_type* data() _NOEXCEPT {
return std::__to_address(this->__begin_);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const value_type* data() const _NOEXCEPT {
return std::__to_address(this->__begin_);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void push_back(const_reference __x);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void push_back(value_type&& __x);
template <class... _Args>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI
#if _LIBCPP_STD_VER >= 17
reference
emplace_back(_Args&&... __args);
#else
void
emplace_back(_Args&&... __args);
#endif
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr void append_range(_Range&& __range) {
insert_range(end(), std::forward<_Range>(__range));
}
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void pop_back();
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __position, const_reference __x);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __position, value_type&& __x);
template <class... _Args>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator emplace(const_iterator __position, _Args&&... __args);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator
insert(const_iterator __position, size_type __n, const_reference __x);
template <class _InputIterator,
__enable_if_t<__has_exactly_input_iterator_category<_InputIterator>::value &&
is_constructible< value_type, typename iterator_traits<_InputIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator
insert(const_iterator __position, _InputIterator __first, _InputIterator __last);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI constexpr iterator insert_range(const_iterator __position, _Range&& __range) {
if constexpr (ranges::forward_range<_Range> || ranges::sized_range<_Range>) {
auto __n = static_cast<size_type>(ranges::distance(__range));
return __insert_with_size(__position, ranges::begin(__range), ranges::end(__range), __n);
} else {
return __insert_with_sentinel(__position, ranges::begin(__range), ranges::end(__range));
}
}
#endif
template <
class _ForwardIterator,
__enable_if_t<__has_forward_iterator_category<_ForwardIterator>::value &&
is_constructible< value_type, typename iterator_traits<_ForwardIterator>::reference>::value,
int> = 0>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator
insert(const_iterator __position, _ForwardIterator __first, _ForwardIterator __last);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator
insert(const_iterator __position, initializer_list<value_type> __il) {
return insert(__position, __il.begin(), __il.end());
}
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __position);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __first, const_iterator __last);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT {
size_type __old_size = size();
__clear();
__annotate_shrink(__old_size);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void resize(size_type __sz);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void resize(size_type __sz, const_reference __x);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void swap(vector&)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT;
#else
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || __is_nothrow_swappable<allocator_type>::value);
#endif
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI bool __invariants() const;
private:
pointer __begin_ = nullptr;
pointer __end_ = nullptr;
__compressed_pair<pointer, allocator_type> __end_cap_ =
__compressed_pair<pointer, allocator_type>(nullptr, __default_init_tag());
// Allocate space for __n objects
// throws length_error if __n > max_size()
// throws (probably bad_alloc) if memory run out
// Precondition: __begin_ == __end_ == __end_cap() == 0
// Precondition: __n > 0
// Postcondition: capacity() >= __n
// Postcondition: size() == 0
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __vallocate(size_type __n) {
if (__n > max_size())
__throw_length_error();
auto __allocation = std::__allocate_at_least(__alloc(), __n);
__begin_ = __allocation.ptr;
__end_ = __allocation.ptr;
__end_cap() = __begin_ + __allocation.count;
__annotate_new(0);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __vdeallocate() _NOEXCEPT;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI size_type __recommend(size_type __new_size) const;
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __construct_at_end(size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __construct_at_end(size_type __n, const_reference __x);
template <class _InputIterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__init_with_size(_InputIterator __first, _Sentinel __last, size_type __n) {
auto __guard = std::__make_exception_guard(__destroy_vector(*this));
if (__n > 0) {
__vallocate(__n);
__construct_at_end(__first, __last, __n);
}
__guard.__complete();
}
template <class _InputIterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__init_with_sentinel(_InputIterator __first, _Sentinel __last) {
auto __guard = std::__make_exception_guard(__destroy_vector(*this));
for (; __first != __last; ++__first)
emplace_back(*__first);
__guard.__complete();
}
template <class _Iterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __assign_with_sentinel(_Iterator __first, _Sentinel __last);
template <class _ForwardIterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__assign_with_size(_ForwardIterator __first, _Sentinel __last, difference_type __n);
template <class _InputIterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator
__insert_with_sentinel(const_iterator __position, _InputIterator __first, _Sentinel __last);
template <class _Iterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator
__insert_with_size(const_iterator __position, _Iterator __first, _Sentinel __last, difference_type __n);
template <class _InputIterator, class _Sentinel>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__construct_at_end(_InputIterator __first, _Sentinel __last, size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __append(size_type __n);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __append(size_type __n, const_reference __x);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI iterator __make_iter(pointer __p) _NOEXCEPT {
return iterator(__p);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const_iterator __make_iter(const_pointer __p) const _NOEXCEPT {
return const_iterator(__p);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__swap_out_circular_buffer(__split_buffer<value_type, allocator_type&>& __v);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI pointer
__swap_out_circular_buffer(__split_buffer<value_type, allocator_type&>& __v, pointer __p);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__move_range(pointer __from_s, pointer __from_e, pointer __to);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __move_assign(vector& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __move_assign(vector& __c, false_type)
_NOEXCEPT_(__alloc_traits::is_always_equal::value);
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __destruct_at_end(pointer __new_last) _NOEXCEPT {
size_type __old_size = size();
__base_destruct_at_end(__new_last);
__annotate_shrink(__old_size);
}
template <class _Up>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI inline pointer __push_back_slow_path(_Up&& __x);
template <class... _Args>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI inline pointer __emplace_back_slow_path(_Args&&... __args);
// The following functions are no-ops outside of AddressSanitizer mode.
// We call annotations for every allocator, unless explicitly disabled.
//
// To disable annotations for a particular allocator, change value of
// __asan_annotate_container_with_allocator to false.
// For more details, see the "Using libc++" documentation page or
// the documentation for __sanitizer_annotate_contiguous_container.
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void
__annotate_contiguous_container(const void* __old_mid, const void* __new_mid) const {
(void)__old_mid;
(void)__new_mid;
#ifndef _LIBCPP_HAS_NO_ASAN
const void* __beg = data();
const void* __end = data() + capacity();
if (!__libcpp_is_constant_evaluated() && __beg != nullptr &&
__asan_annotate_container_with_allocator<_Allocator>::value)
__sanitizer_annotate_contiguous_container(__beg, __end, __old_mid, __new_mid);
#endif
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __annotate_new(size_type __current_size) const _NOEXCEPT {
(void)__current_size;
#ifndef _LIBCPP_HAS_NO_ASAN
__annotate_contiguous_container(data() + capacity(), data() + __current_size);
#endif
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __annotate_delete() const _NOEXCEPT {
#ifndef _LIBCPP_HAS_NO_ASAN
__annotate_contiguous_container(data() + size(), data() + capacity());
#endif
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __annotate_increase(size_type __n) const _NOEXCEPT {
(void)__n;
#ifndef _LIBCPP_HAS_NO_ASAN
__annotate_contiguous_container(data() + size(), data() + size() + __n);
#endif
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __annotate_shrink(size_type __old_size) const _NOEXCEPT {
(void)__old_size;
#ifndef _LIBCPP_HAS_NO_ASAN
__annotate_contiguous_container(data() + __old_size, data() + size());
#endif
}
struct _ConstructTransaction {
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI explicit _ConstructTransaction(vector& __v, size_type __n)
: __v_(__v), __pos_(__v.__end_), __new_end_(__v.__end_ + __n) {
#ifndef _LIBCPP_HAS_NO_ASAN
__v_.__annotate_increase(__n);
#endif
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI ~_ConstructTransaction() {
__v_.__end_ = __pos_;
#ifndef _LIBCPP_HAS_NO_ASAN
if (__pos_ != __new_end_) {
__v_.__annotate_shrink(__new_end_ - __v_.__begin_);
}
#endif
}
vector& __v_;
pointer __pos_;
const_pointer const __new_end_;
private:
_ConstructTransaction(_ConstructTransaction const&) = delete;
_ConstructTransaction& operator=(_ConstructTransaction const&) = delete;
};
template <class... _Args>
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __construct_one_at_end(_Args&&... __args) {
_ConstructTransaction __tx(*this, 1);
__alloc_traits::construct(this->__alloc(), std::__to_address(__tx.__pos_), std::forward<_Args>(__args)...);
++__tx.__pos_;
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI allocator_type& __alloc() _NOEXCEPT {
return this->__end_cap_.second();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const allocator_type& __alloc() const _NOEXCEPT {
return this->__end_cap_.second();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI pointer& __end_cap() _NOEXCEPT {
return this->__end_cap_.first();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI const pointer& __end_cap() const _NOEXCEPT {
return this->__end_cap_.first();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __clear() _NOEXCEPT {
__base_destruct_at_end(this->__begin_);
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __base_destruct_at_end(pointer __new_last) _NOEXCEPT {
pointer __soon_to_be_end = this->__end_;
while (__new_last != __soon_to_be_end)
__alloc_traits::destroy(__alloc(), std::__to_address(--__soon_to_be_end));
this->__end_ = __new_last;
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const vector& __c) {
__copy_assign_alloc(__c, integral_constant<bool, __alloc_traits::propagate_on_container_copy_assignment::value>());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(vector& __c)
_NOEXCEPT_(!__alloc_traits::propagate_on_container_move_assignment::value ||
is_nothrow_move_assignable<allocator_type>::value) {
__move_assign_alloc(__c, integral_constant<bool, __alloc_traits::propagate_on_container_move_assignment::value>());
}
_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI void __throw_length_error() const { std::__throw_length_error("vector"); }
_LIBCPP_NORETURN _LIBCPP_HIDE_FROM_ABI void __throw_out_of_range() const { std::__throw_out_of_range("vector"); }
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const vector& __c, true_type) {
if (__alloc() != __c.__alloc()) {
__clear();
__annotate_delete();
__alloc_traits::deallocate(__alloc(), this->__begin_, capacity());
this->__begin_ = this->__end_ = __end_cap() = nullptr;
}
__alloc() = __c.__alloc();
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const vector&, false_type) {}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(vector& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) {
__alloc() = std::move(__c.__alloc());
}
_LIBCPP_CONSTEXPR_SINCE_CXX20 _LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(vector&, false_type) _NOEXCEPT {}
};
#if _LIBCPP_STD_VER >= 17
template <class _InputIterator,
class _Alloc = allocator<__iter_value_type<_InputIterator>>,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Alloc>::value> >
vector(_InputIterator, _InputIterator) -> vector<__iter_value_type<_InputIterator>, _Alloc>;
template <class _InputIterator,
class _Alloc,
class = enable_if_t<__has_input_iterator_category<_InputIterator>::value>,
class = enable_if_t<__is_allocator<_Alloc>::value> >
vector(_InputIterator, _InputIterator, _Alloc) -> vector<__iter_value_type<_InputIterator>, _Alloc>;
#endif
#if _LIBCPP_STD_VER >= 23
template <ranges::input_range _Range,
class _Alloc = allocator<ranges::range_value_t<_Range>>,
class = enable_if_t<__is_allocator<_Alloc>::value> >
vector(from_range_t, _Range&&, _Alloc = _Alloc()) -> vector<ranges::range_value_t<_Range>, _Alloc>;
#endif
// __swap_out_circular_buffer relocates the objects in [__begin_, __end_) into the front of __v and swaps the buffers of
// *this and __v. It is assumed that __v provides space for exactly (__end_ - __begin_) objects in the front. This
// function has a strong exception guarantee.
template <class _Tp, class _Allocator>
_LIBCPP_CONSTEXPR_SINCE_CXX20 void
vector<_Tp, _Allocator>::__swap_out_circular_buffer(__split_buffer<value_type, allocator_type&>& __v) {
__annotate_delete();
auto __new_begin = __v.__begin_ - (__end_ - __begin_);
std::__uninitialized_allocator_relocate(
__alloc(), std::__to_address(__begin_), std::__to_address(__end_), std::__to_address(__new_begin));
__v.__begin_ = __new_begin;
__end_ = __begin_; // All the objects have been destroyed by relocating them.
std::swap(this->__begin_, __v.__begin_);
std::swap(this->__end_, __v.__end_);
std::swap(this->__end_cap(), __v.__end_cap());