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llvm / llvm-project / d1b3eeb24460fb65773db712e4cc0e204ffcaa0d / . / libcxx / include / deque
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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_DEQUE
#define _LIBCPP_DEQUE
/*
deque synopsis
namespace std
{
template <class T, class Allocator = allocator<T> >
class deque
{
public:
// types:
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;
// construct/copy/destroy:
deque() noexcept(is_nothrow_default_constructible<allocator_type>::value);
explicit deque(const allocator_type& a);
explicit deque(size_type n);
explicit deque(size_type n, const allocator_type& a); // C++14
deque(size_type n, const value_type& v);
deque(size_type n, const value_type& v, const allocator_type& a);
template <class InputIterator>
deque(InputIterator f, InputIterator l);
template <class InputIterator>
deque(InputIterator f, InputIterator l, const allocator_type& a);
template<container-compatible-range<T> R>
deque(from_range_t, R&& rg, const Allocator& = Allocator()); // C++23
deque(const deque& c);
deque(deque&& c)
noexcept(is_nothrow_move_constructible<allocator_type>::value);
deque(initializer_list<value_type> il, const Allocator& a = allocator_type());
deque(const deque& c, const allocator_type& a);
deque(deque&& c, const allocator_type& a);
~deque();
deque& operator=(const deque& c);
deque& operator=(deque&& c)
noexcept((allocator_traits<allocator_type>::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value) ||
allocator_traits<allocator_type>::is_always_equal::value);
deque& operator=(initializer_list<value_type> il);
template <class InputIterator>
void assign(InputIterator f, InputIterator l);
template<container-compatible-range<T> R>
void assign_range(R&& rg); // C++23
void assign(size_type n, const value_type& v);
void assign(initializer_list<value_type> il);
allocator_type get_allocator() const noexcept;
// iterators:
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;
// capacity:
size_type size() const noexcept;
size_type max_size() const noexcept;
void resize(size_type n);
void resize(size_type n, const value_type& v);
void shrink_to_fit();
bool empty() const noexcept;
// element access:
reference operator[](size_type i);
const_reference operator[](size_type i) const;
reference at(size_type i);
const_reference at(size_type i) const;
reference front();
const_reference front() const;
reference back();
const_reference back() const;
// modifiers:
void push_front(const value_type& v);
void push_front(value_type&& v);
template<container-compatible-range<T> R>
void prepend_range(R&& rg); // C++23
void push_back(const value_type& v);
void push_back(value_type&& v);
template<container-compatible-range<T> R>
void append_range(R&& rg); // C++23
template <class... Args> reference emplace_front(Args&&... args); // reference in C++17
template <class... Args> reference emplace_back(Args&&... args); // reference in C++17
template <class... Args> iterator emplace(const_iterator p, Args&&... args);
iterator insert(const_iterator p, const value_type& v);
iterator insert(const_iterator p, value_type&& v);
iterator insert(const_iterator p, size_type n, const value_type& v);
template <class InputIterator>
iterator insert(const_iterator p, InputIterator f, InputIterator l);
template<container-compatible-range<T> R>
iterator insert_range(const_iterator position, R&& rg); // C++23
iterator insert(const_iterator p, initializer_list<value_type> il);
void pop_front();
void pop_back();
iterator erase(const_iterator p);
iterator erase(const_iterator f, const_iterator l);
void swap(deque& c)
noexcept(allocator_traits<allocator_type>::is_always_equal::value); // C++17
void clear() noexcept;
};
template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
deque(InputIterator, InputIterator, Allocator = Allocator())
-> deque<typename iterator_traits<InputIterator>::value_type, Allocator>; // C++17
template<ranges::input_range R, class Allocator = allocator<ranges::range_value_t<R>>>
deque(from_range_t, R&&, Allocator = Allocator())
-> deque<ranges::range_value_t<R>, Allocator>; // C++23
template <class T, class Allocator>
bool operator==(const deque<T,Allocator>& x, const deque<T,Allocator>& y);
template <class T, class Allocator>
bool operator< (const deque<T,Allocator>& x, const deque<T,Allocator>& y); // removed in C++20
template <class T, class Allocator>
bool operator!=(const deque<T,Allocator>& x, const deque<T,Allocator>& y); // removed in C++20
template <class T, class Allocator>
bool operator> (const deque<T,Allocator>& x, const deque<T,Allocator>& y); // removed in C++20
template <class T, class Allocator>
bool operator>=(const deque<T,Allocator>& x, const deque<T,Allocator>& y); // removed in C++20
template <class T, class Allocator>
bool operator<=(const deque<T,Allocator>& x, const deque<T,Allocator>& y); // removed in C++20
template<class T, class Allocator>
synth-three-way-result<T> operator<=>(const deque<T, Allocator>& x,
const deque<T, Allocator>& y); // since C++20
// specialized algorithms:
template <class T, class Allocator>
void swap(deque<T,Allocator>& x, deque<T,Allocator>& y)
noexcept(noexcept(x.swap(y)));
template <class T, class Allocator, class U>
typename deque<T, Allocator>::size_type
erase(deque<T, Allocator>& c, const U& value); // C++20
template <class T, class Allocator, class Predicate>
typename deque<T, Allocator>::size_type
erase_if(deque<T, Allocator>& c, Predicate pred); // C++20
} // std
*/
#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
# include <__cxx03/deque>
#else
# include <__algorithm/copy.h>
# include <__algorithm/copy_backward.h>
# include <__algorithm/copy_n.h>
# include <__algorithm/equal.h>
# include <__algorithm/fill_n.h>
# include <__algorithm/lexicographical_compare.h>
# include <__algorithm/lexicographical_compare_three_way.h>
# include <__algorithm/max.h>
# include <__algorithm/min.h>
# include <__algorithm/move.h>
# include <__algorithm/move_backward.h>
# include <__algorithm/remove.h>
# include <__algorithm/remove_if.h>
# include <__algorithm/unwrap_iter.h>
# include <__assert>
# include <__config>
# include <__debug_utils/sanitizers.h>
# include <__format/enable_insertable.h>
# include <__fwd/deque.h>
# include <__iterator/distance.h>
# include <__iterator/iterator_traits.h>
# include <__iterator/move_iterator.h>
# include <__iterator/next.h>
# include <__iterator/prev.h>
# include <__iterator/reverse_iterator.h>
# include <__iterator/segmented_iterator.h>
# include <__memory/addressof.h>
# include <__memory/allocator.h>
# include <__memory/allocator_destructor.h>
# include <__memory/allocator_traits.h>
# include <__memory/compressed_pair.h>
# include <__memory/pointer_traits.h>
# include <__memory/swap_allocator.h>
# include <__memory/temp_value.h>
# include <__memory/unique_ptr.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/conditional.h>
# include <__type_traits/container_traits.h>
# include <__type_traits/disjunction.h>
# include <__type_traits/enable_if.h>
# include <__type_traits/is_allocator.h>
# include <__type_traits/is_convertible.h>
# include <__type_traits/is_nothrow_assignable.h>
# include <__type_traits/is_nothrow_constructible.h>
# include <__type_traits/is_same.h>
# include <__type_traits/is_swappable.h>
# include <__type_traits/is_trivially_relocatable.h>
# include <__type_traits/type_identity.h>
# include <__utility/forward.h>
# include <__utility/move.h>
# include <__utility/pair.h>
# include <__utility/swap.h>
# 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>
// [deque.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 _ValueType, class _DiffType>
struct __deque_block_size {
static const _DiffType value = sizeof(_ValueType) < 256 ? 4096 / sizeof(_ValueType) : 16;
};
template <class _ValueType,
class _Pointer,
class _Reference,
class _MapPointer,
class _DiffType,
_DiffType _BS =
# ifdef _LIBCPP_ABI_INCOMPLETE_TYPES_IN_DEQUE
// Keep template parameter to avoid changing all template declarations thoughout
// this file.
0
# else
__deque_block_size<_ValueType, _DiffType>::value
# endif
>
class __deque_iterator {
typedef _MapPointer __map_iterator;
public:
typedef _Pointer pointer;
typedef _DiffType difference_type;
private:
__map_iterator __m_iter_;
pointer __ptr_;
static const difference_type __block_size;
public:
typedef _ValueType value_type;
typedef random_access_iterator_tag iterator_category;
typedef _Reference reference;
_LIBCPP_HIDE_FROM_ABI __deque_iterator() _NOEXCEPT
# if _LIBCPP_STD_VER >= 14
: __m_iter_(nullptr),
__ptr_(nullptr)
# endif
{
}
template <class _Pp, class _Rp, class _MP, __enable_if_t<is_convertible<_Pp, pointer>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI
__deque_iterator(const __deque_iterator<value_type, _Pp, _Rp, _MP, difference_type, _BS>& __it) _NOEXCEPT
: __m_iter_(__it.__m_iter_),
__ptr_(__it.__ptr_) {}
_LIBCPP_HIDE_FROM_ABI reference operator*() const { return *__ptr_; }
_LIBCPP_HIDE_FROM_ABI pointer operator->() const { return __ptr_; }
_LIBCPP_HIDE_FROM_ABI __deque_iterator& operator++() {
if (++__ptr_ - *__m_iter_ == __block_size) {
++__m_iter_;
__ptr_ = *__m_iter_;
}
return *this;
}
_LIBCPP_HIDE_FROM_ABI __deque_iterator operator++(int) {
__deque_iterator __tmp = *this;
++(*this);
return __tmp;
}
_LIBCPP_HIDE_FROM_ABI __deque_iterator& operator--() {
if (__ptr_ == *__m_iter_) {
--__m_iter_;
__ptr_ = *__m_iter_ + __block_size;
}
--__ptr_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __deque_iterator operator--(int) {
__deque_iterator __tmp = *this;
--(*this);
return __tmp;
}
_LIBCPP_HIDE_FROM_ABI __deque_iterator& operator+=(difference_type __n) {
if (__n != 0) {
__n += __ptr_ - *__m_iter_;
if (__n > 0) {
__m_iter_ += __n / __block_size;
__ptr_ = *__m_iter_ + __n % __block_size;
} else // (__n < 0)
{
difference_type __z = __block_size - 1 - __n;
__m_iter_ -= __z / __block_size;
__ptr_ = *__m_iter_ + (__block_size - 1 - __z % __block_size);
}
}
return *this;
}
_LIBCPP_HIDE_FROM_ABI __deque_iterator& operator-=(difference_type __n) { return *this += -__n; }
_LIBCPP_HIDE_FROM_ABI __deque_iterator operator+(difference_type __n) const {
__deque_iterator __t(*this);
__t += __n;
return __t;
}
_LIBCPP_HIDE_FROM_ABI __deque_iterator operator-(difference_type __n) const {
__deque_iterator __t(*this);
__t -= __n;
return __t;
}
_LIBCPP_HIDE_FROM_ABI friend __deque_iterator operator+(difference_type __n, const __deque_iterator& __it) {
return __it + __n;
}
_LIBCPP_HIDE_FROM_ABI friend difference_type operator-(const __deque_iterator& __x, const __deque_iterator& __y) {
if (__x != __y)
return (__x.__m_iter_ - __y.__m_iter_) * __block_size + (__x.__ptr_ - *__x.__m_iter_) -
(__y.__ptr_ - *__y.__m_iter_);
return 0;
}
_LIBCPP_HIDE_FROM_ABI reference operator[](difference_type __n) const { return *(*this + __n); }
_LIBCPP_HIDE_FROM_ABI friend bool operator==(const __deque_iterator& __x, const __deque_iterator& __y) {
return __x.__ptr_ == __y.__ptr_;
}
# if _LIBCPP_STD_VER <= 17
_LIBCPP_HIDE_FROM_ABI friend bool operator!=(const __deque_iterator& __x, const __deque_iterator& __y) {
return !(__x == __y);
}
_LIBCPP_HIDE_FROM_ABI friend bool operator<(const __deque_iterator& __x, const __deque_iterator& __y) {
return __x.__m_iter_ < __y.__m_iter_ || (__x.__m_iter_ == __y.__m_iter_ && __x.__ptr_ < __y.__ptr_);
}
_LIBCPP_HIDE_FROM_ABI friend bool operator>(const __deque_iterator& __x, const __deque_iterator& __y) {
return __y < __x;
}
_LIBCPP_HIDE_FROM_ABI friend bool operator<=(const __deque_iterator& __x, const __deque_iterator& __y) {
return !(__y < __x);
}
_LIBCPP_HIDE_FROM_ABI friend bool operator>=(const __deque_iterator& __x, const __deque_iterator& __y) {
return !(__x < __y);
}
# else
_LIBCPP_HIDE_FROM_ABI friend strong_ordering operator<=>(const __deque_iterator& __x, const __deque_iterator& __y) {
if (__x.__m_iter_ < __y.__m_iter_)
return strong_ordering::less;
if (__x.__m_iter_ == __y.__m_iter_) {
if constexpr (three_way_comparable<pointer, strong_ordering>) {
return __x.__ptr_ <=> __y.__ptr_;
} else {
if (__x.__ptr_ < __y.__ptr_)
return strong_ordering::less;
if (__x.__ptr_ == __y.__ptr_)
return strong_ordering::equal;
return strong_ordering::greater;
}
}
return strong_ordering::greater;
}
# endif // _LIBCPP_STD_VER >= 20
private:
_LIBCPP_HIDE_FROM_ABI explicit __deque_iterator(__map_iterator __m, pointer __p) _NOEXCEPT
: __m_iter_(__m),
__ptr_(__p) {}
template <class _Tp, class _Ap>
friend class deque;
template <class _Vp, class _Pp, class _Rp, class _MP, class _Dp, _Dp>
friend class __deque_iterator;
template <class>
friend struct __segmented_iterator_traits;
};
template <class _ValueType, class _Pointer, class _Reference, class _MapPointer, class _DiffType, _DiffType _BlockSize>
struct __segmented_iterator_traits<
__deque_iterator<_ValueType, _Pointer, _Reference, _MapPointer, _DiffType, _BlockSize> > {
private:
using _Iterator _LIBCPP_NODEBUG =
__deque_iterator<_ValueType, _Pointer, _Reference, _MapPointer, _DiffType, _BlockSize>;
public:
using __is_segmented_iterator _LIBCPP_NODEBUG = true_type;
using __segment_iterator _LIBCPP_NODEBUG = _MapPointer;
using __local_iterator _LIBCPP_NODEBUG = _Pointer;
static _LIBCPP_HIDE_FROM_ABI __segment_iterator __segment(_Iterator __iter) { return __iter.__m_iter_; }
static _LIBCPP_HIDE_FROM_ABI __local_iterator __local(_Iterator __iter) { return __iter.__ptr_; }
static _LIBCPP_HIDE_FROM_ABI __local_iterator __begin(__segment_iterator __iter) { return *__iter; }
static _LIBCPP_HIDE_FROM_ABI __local_iterator __end(__segment_iterator __iter) {
return *__iter + _Iterator::__block_size;
}
static _LIBCPP_HIDE_FROM_ABI _Iterator __compose(__segment_iterator __segment, __local_iterator __local) {
if (__segment && __local == __end(__segment)) {
++__segment;
return _Iterator(__segment, *__segment);
}
return _Iterator(__segment, __local);
}
};
template <class _ValueType, class _Pointer, class _Reference, class _MapPointer, class _DiffType, _DiffType _BlockSize>
const _DiffType __deque_iterator<_ValueType, _Pointer, _Reference, _MapPointer, _DiffType, _BlockSize>::__block_size =
__deque_block_size<_ValueType, _DiffType>::value;
template <class _Tp, class _Allocator /*= allocator<_Tp>*/>
class deque {
public:
// types:
using value_type = _Tp;
using allocator_type = _Allocator;
using __alloc_traits _LIBCPP_NODEBUG = allocator_traits<allocator_type>;
static_assert(__check_valid_allocator<allocator_type>::value, "");
static_assert(is_same<typename allocator_type::value_type, value_type>::value,
"Allocator::value_type must be same type as value_type");
using size_type = typename __alloc_traits::size_type;
using difference_type = typename __alloc_traits::difference_type;
using pointer = typename __alloc_traits::pointer;
using const_pointer = typename __alloc_traits::const_pointer;
using __pointer_allocator _LIBCPP_NODEBUG = __rebind_alloc<__alloc_traits, pointer>;
using __const_pointer_allocator _LIBCPP_NODEBUG = __rebind_alloc<__alloc_traits, const_pointer>;
using __map _LIBCPP_NODEBUG = __split_buffer<pointer, __pointer_allocator>;
using __map_alloc_traits _LIBCPP_NODEBUG = allocator_traits<__pointer_allocator>;
using __map_pointer _LIBCPP_NODEBUG = typename __map_alloc_traits::pointer;
using __map_const_pointer _LIBCPP_NODEBUG = typename allocator_traits<__const_pointer_allocator>::const_pointer;
using __map_const_iterator _LIBCPP_NODEBUG = typename __map::const_iterator;
using reference = value_type&;
using const_reference = const value_type&;
using iterator = __deque_iterator<value_type, pointer, reference, __map_pointer, difference_type>;
using const_iterator =
__deque_iterator<value_type, const_pointer, const_reference, __map_const_pointer, difference_type>;
using reverse_iterator = std::reverse_iterator<iterator>;
using const_reverse_iterator = std::reverse_iterator<const_iterator>;
// A deque contains the following members which may be trivially relocatable:
// - __map: is a `__split_buffer`, see `__split_buffer` for more information on when it is trivially relocatable
// - size_type: is always trivially relocatable, since it is required to be an integral type
// - allocator_type: may not be trivially relocatable, so it's checked
// None of these are referencing the `deque` itself, so if all of them are trivially relocatable, `deque` is too.
using __trivially_relocatable _LIBCPP_NODEBUG = __conditional_t<
__libcpp_is_trivially_relocatable<__map>::value && __libcpp_is_trivially_relocatable<allocator_type>::value,
deque,
void>;
static_assert(is_nothrow_default_constructible<allocator_type>::value ==
is_nothrow_default_constructible<__pointer_allocator>::value,
"rebinding an allocator should not change exception guarantees");
static_assert(is_nothrow_move_constructible<allocator_type>::value ==
is_nothrow_move_constructible<typename __map::allocator_type>::value,
"rebinding an allocator should not change exception guarantees");
private:
struct __deque_block_range {
explicit _LIBCPP_HIDE_FROM_ABI __deque_block_range(pointer __b, pointer __e) _NOEXCEPT
: __begin_(__b),
__end_(__e) {}
const pointer __begin_;
const pointer __end_;
};
struct __deque_range {
iterator __pos_;
const iterator __end_;
_LIBCPP_HIDE_FROM_ABI __deque_range(iterator __pos, iterator __e) _NOEXCEPT : __pos_(__pos), __end_(__e) {}
explicit _LIBCPP_HIDE_FROM_ABI operator bool() const _NOEXCEPT { return __pos_ != __end_; }
_LIBCPP_HIDE_FROM_ABI __deque_range begin() const { return *this; }
_LIBCPP_HIDE_FROM_ABI __deque_range end() const { return __deque_range(__end_, __end_); }
_LIBCPP_HIDE_FROM_ABI __deque_block_range operator*() const _NOEXCEPT {
if (__pos_.__m_iter_ == __end_.__m_iter_) {
return __deque_block_range(__pos_.__ptr_, __end_.__ptr_);
}
return __deque_block_range(__pos_.__ptr_, *__pos_.__m_iter_ + __block_size);
}
_LIBCPP_HIDE_FROM_ABI __deque_range& operator++() _NOEXCEPT {
if (__pos_.__m_iter_ == __end_.__m_iter_) {
__pos_ = __end_;
} else {
++__pos_.__m_iter_;
__pos_.__ptr_ = *__pos_.__m_iter_;
}
return *this;
}
_LIBCPP_HIDE_FROM_ABI friend bool operator==(__deque_range const& __lhs, __deque_range const& __rhs) {
return __lhs.__pos_ == __rhs.__pos_;
}
_LIBCPP_HIDE_FROM_ABI friend bool operator!=(__deque_range const& __lhs, __deque_range const& __rhs) {
return !(__lhs == __rhs);
}
};
struct _ConstructTransaction {
_LIBCPP_HIDE_FROM_ABI _ConstructTransaction(deque* __db, __deque_block_range& __r)
: __pos_(__r.__begin_), __end_(__r.__end_), __begin_(__r.__begin_), __base_(__db) {}
_LIBCPP_HIDE_FROM_ABI ~_ConstructTransaction() { __base_->__size() += (__pos_ - __begin_); }
pointer __pos_;
const pointer __end_;
private:
const pointer __begin_;
deque* const __base_;
};
static const difference_type __block_size;
__map __map_;
size_type __start_;
_LIBCPP_COMPRESSED_PAIR(size_type, __size_, allocator_type, __alloc_);
public:
// construct/copy/destroy:
_LIBCPP_HIDE_FROM_ABI deque() _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
: __start_(0), __size_(0) {
__annotate_new(0);
}
_LIBCPP_HIDE_FROM_ABI ~deque() {
clear();
__annotate_delete();
typename __map::iterator __i = __map_.begin();
typename __map::iterator __e = __map_.end();
for (; __i != __e; ++__i)
__alloc_traits::deallocate(__alloc(), *__i, __block_size);
}
_LIBCPP_HIDE_FROM_ABI explicit deque(const allocator_type& __a)
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
__annotate_new(0);
}
explicit _LIBCPP_HIDE_FROM_ABI deque(size_type __n);
# if _LIBCPP_STD_VER >= 14
explicit _LIBCPP_HIDE_FROM_ABI deque(size_type __n, const _Allocator& __a);
# endif
_LIBCPP_HIDE_FROM_ABI deque(size_type __n, const value_type& __v);
template <__enable_if_t<__is_allocator<_Allocator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI deque(size_type __n, const value_type& __v, const allocator_type& __a)
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
__annotate_new(0);
if (__n > 0)
__append(__n, __v);
}
template <class _InputIter, __enable_if_t<__has_input_iterator_category<_InputIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI deque(_InputIter __f, _InputIter __l);
template <class _InputIter, __enable_if_t<__has_input_iterator_category<_InputIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI deque(_InputIter __f, _InputIter __l, const allocator_type& __a);
# if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI deque(from_range_t, _Range&& __range, const allocator_type& __a = allocator_type())
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
if constexpr (ranges::forward_range<_Range> || ranges::sized_range<_Range>) {
__append_with_size(ranges::begin(__range), ranges::distance(__range));
} else {
for (auto&& __e : __range) {
emplace_back(std::forward<decltype(__e)>(__e));
}
}
}
# endif
_LIBCPP_HIDE_FROM_ABI deque(const deque& __c);
_LIBCPP_HIDE_FROM_ABI deque(const deque& __c, const __type_identity_t<allocator_type>& __a);
_LIBCPP_HIDE_FROM_ABI deque& operator=(const deque& __c);
# ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI deque(initializer_list<value_type> __il);
_LIBCPP_HIDE_FROM_ABI deque(initializer_list<value_type> __il, const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI deque& operator=(initializer_list<value_type> __il) {
assign(__il);
return *this;
}
_LIBCPP_HIDE_FROM_ABI deque(deque&& __c) noexcept(is_nothrow_move_constructible<allocator_type>::value);
_LIBCPP_HIDE_FROM_ABI deque(deque&& __c, const __type_identity_t<allocator_type>& __a);
_LIBCPP_HIDE_FROM_ABI deque& operator=(deque&& __c) noexcept(
(__alloc_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value) ||
__alloc_traits::is_always_equal::value);
_LIBCPP_HIDE_FROM_ABI void assign(initializer_list<value_type> __il) { assign(__il.begin(), __il.end()); }
# endif // _LIBCPP_CXX03_LANG
template <class _InputIter,
__enable_if_t<__has_input_iterator_category<_InputIter>::value &&
!__has_random_access_iterator_category<_InputIter>::value,
int> = 0>
_LIBCPP_HIDE_FROM_ABI void assign(_InputIter __f, _InputIter __l);
template <class _RAIter, __enable_if_t<__has_random_access_iterator_category<_RAIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI void assign(_RAIter __f, _RAIter __l);
# if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI void assign_range(_Range&& __range) {
if constexpr (ranges::random_access_range<_Range>) {
auto __n = static_cast<size_type>(ranges::distance(__range));
__assign_with_size_random_access(ranges::begin(__range), __n);
} else 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), __n);
} else {
__assign_with_sentinel(ranges::begin(__range), ranges::end(__range));
}
}
# endif
_LIBCPP_HIDE_FROM_ABI void assign(size_type __n, const value_type& __v);
_LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI allocator_type& __alloc() _NOEXCEPT { return __alloc_; }
_LIBCPP_HIDE_FROM_ABI const allocator_type& __alloc() const _NOEXCEPT { return __alloc_; }
// iterators:
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT {
__map_pointer __mp = __map_.begin() + __start_ / __block_size;
return iterator(__mp, __map_.empty() ? 0 : *__mp + __start_ % __block_size);
}
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT {
__map_const_pointer __mp = static_cast<__map_const_pointer>(__map_.begin() + __start_ / __block_size);
return const_iterator(__mp, __map_.empty() ? 0 : *__mp + __start_ % __block_size);
}
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT {
size_type __p = size() + __start_;
__map_pointer __mp = __map_.begin() + __p / __block_size;
return iterator(__mp, __map_.empty() ? 0 : *__mp + __p % __block_size);
}
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT {
size_type __p = size() + __start_;
__map_const_pointer __mp = static_cast<__map_const_pointer>(__map_.begin() + __p / __block_size);
return const_iterator(__mp, __map_.empty() ? 0 : *__mp + __p % __block_size);
}
_LIBCPP_HIDE_FROM_ABI reverse_iterator rbegin() _NOEXCEPT { return reverse_iterator(end()); }
_LIBCPP_HIDE_FROM_ABI const_reverse_iterator rbegin() const _NOEXCEPT { return const_reverse_iterator(end()); }
_LIBCPP_HIDE_FROM_ABI reverse_iterator rend() _NOEXCEPT { return reverse_iterator(begin()); }
_LIBCPP_HIDE_FROM_ABI const_reverse_iterator rend() const _NOEXCEPT { return const_reverse_iterator(begin()); }
_LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return end(); }
_LIBCPP_HIDE_FROM_ABI const_reverse_iterator crbegin() const _NOEXCEPT { return const_reverse_iterator(end()); }
_LIBCPP_HIDE_FROM_ABI const_reverse_iterator crend() const _NOEXCEPT { return const_reverse_iterator(begin()); }
// capacity:
_LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT { return __size(); }
_LIBCPP_HIDE_FROM_ABI size_type& __size() _NOEXCEPT { return __size_; }
_LIBCPP_HIDE_FROM_ABI const size_type& __size() const _NOEXCEPT { return __size_; }
_LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT {
return std::min<size_type>(__alloc_traits::max_size(__alloc()), numeric_limits<difference_type>::max());
}
_LIBCPP_HIDE_FROM_ABI void resize(size_type __n);
_LIBCPP_HIDE_FROM_ABI void resize(size_type __n, const value_type& __v);
_LIBCPP_HIDE_FROM_ABI void shrink_to_fit() _NOEXCEPT;
[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return size() == 0; }
// element access:
_LIBCPP_HIDE_FROM_ABI reference operator[](size_type __i) _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI const_reference operator[](size_type __i) const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI reference at(size_type __i);
_LIBCPP_HIDE_FROM_ABI const_reference at(size_type __i) const;
_LIBCPP_HIDE_FROM_ABI reference front() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI const_reference front() const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI reference back() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI const_reference back() const _NOEXCEPT;
// 23.2.2.3 modifiers:
_LIBCPP_HIDE_FROM_ABI void push_front(const value_type& __v);
_LIBCPP_HIDE_FROM_ABI void push_back(const value_type& __v);
# ifndef _LIBCPP_CXX03_LANG
# if _LIBCPP_STD_VER >= 17
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI reference emplace_front(_Args&&... __args);
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI reference emplace_back(_Args&&... __args);
# else
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI void emplace_front(_Args&&... __args);
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI void emplace_back(_Args&&... __args);
# endif
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI iterator emplace(const_iterator __p, _Args&&... __args);
_LIBCPP_HIDE_FROM_ABI void push_front(value_type&& __v);
_LIBCPP_HIDE_FROM_ABI void push_back(value_type&& __v);
# if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI void prepend_range(_Range&& __range) {
insert_range(begin(), std::forward<_Range>(__range));
}
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI void append_range(_Range&& __range) {
insert_range(end(), std::forward<_Range>(__range));
}
# endif
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, value_type&& __v);
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, initializer_list<value_type> __il) {
return insert(__p, __il.begin(), __il.end());
}
# endif // _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, const value_type& __v);
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, size_type __n, const value_type& __v);
template <class _InputIter, __enable_if_t<__has_exactly_input_iterator_category<_InputIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, _InputIter __f, _InputIter __l);
template <class _ForwardIterator,
__enable_if_t<__has_exactly_forward_iterator_category<_ForwardIterator>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, _ForwardIterator __f, _ForwardIterator __l);
template <class _BiIter, __enable_if_t<__has_bidirectional_iterator_category<_BiIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, _BiIter __f, _BiIter __l);
# if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI iterator insert_range(const_iterator __position, _Range&& __range) {
if constexpr (ranges::bidirectional_range<_Range>) {
auto __n = static_cast<size_type>(ranges::distance(__range));
return __insert_bidirectional(__position, ranges::begin(__range), ranges::end(__range), __n);
} else 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), __n);
} else {
return __insert_with_sentinel(__position, ranges::begin(__range), ranges::end(__range));
}
}
# endif
_LIBCPP_HIDE_FROM_ABI void pop_front();
_LIBCPP_HIDE_FROM_ABI void pop_back();
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __p);
_LIBCPP_HIDE_FROM_ABI iterator erase(const_iterator __f, const_iterator __l);
_LIBCPP_HIDE_FROM_ABI void swap(deque& __c)
# if _LIBCPP_STD_VER >= 14
_NOEXCEPT;
# else
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || __is_nothrow_swappable_v<allocator_type>);
# endif
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI bool __invariants() const {
if (!__map_.__invariants())
return false;
if (__map_.size() >= size_type(-1) / __block_size)
return false;
for (__map_const_iterator __i = __map_.begin(), __e = __map_.end(); __i != __e; ++__i)
if (*__i == nullptr)
return false;
if (__map_.size() != 0) {
if (size() >= __map_.size() * __block_size)
return false;
if (__start_ >= __map_.size() * __block_size - size())
return false;
} else {
if (size() != 0)
return false;
if (__start_ != 0)
return false;
}
return true;
}
_LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(deque& __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_HIDE_FROM_ABI void __move_assign_alloc(deque& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value) {
__alloc() = std::move(__c.__alloc());
}
_LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(deque&, false_type) _NOEXCEPT {}
_LIBCPP_HIDE_FROM_ABI void __move_assign(deque& __c)
_NOEXCEPT_(__alloc_traits::propagate_on_container_move_assignment::value&&
is_nothrow_move_assignable<allocator_type>::value) {
__map_ = std::move(__c.__map_);
__start_ = __c.__start_;
__size() = __c.size();
__move_assign_alloc(__c);
__c.__start_ = __c.__size() = 0;
}
_LIBCPP_HIDE_FROM_ABI static size_type __recommend_blocks(size_type __n) {
return __n / __block_size + (__n % __block_size != 0);
}
_LIBCPP_HIDE_FROM_ABI size_type __capacity() const {
return __map_.size() == 0 ? 0 : __map_.size() * __block_size - 1;
}
_LIBCPP_HIDE_FROM_ABI size_type __block_count() const { return __map_.size(); }
_LIBCPP_HIDE_FROM_ABI size_type __front_spare() const { return __start_; }
_LIBCPP_HIDE_FROM_ABI size_type __front_spare_blocks() const { return __front_spare() / __block_size; }
_LIBCPP_HIDE_FROM_ABI size_type __back_spare() const { return __capacity() - (__start_ + size()); }
_LIBCPP_HIDE_FROM_ABI size_type __back_spare_blocks() const { return __back_spare() / __block_size; }
private:
enum __asan_annotation_type { __asan_unposion, __asan_poison };
enum __asan_annotation_place {
__asan_front_moved,
__asan_back_moved,
};
_LIBCPP_HIDE_FROM_ABI void __annotate_from_to(
size_type __beg,
size_type __end,
__asan_annotation_type __annotation_type,
__asan_annotation_place __place) const _NOEXCEPT {
(void)__beg;
(void)__end;
(void)__annotation_type;
(void)__place;
# if _LIBCPP_HAS_ASAN
// __beg - index of the first item to annotate
// __end - index behind the last item to annotate (so last item + 1)
// __annotation_type - __asan_unposion or __asan_poison
// __place - __asan_front_moved or __asan_back_moved
// Note: All indexes in __map_
if (__beg == __end)
return;
// __annotations_beg_map - first chunk which annotations we want to modify
// __annotations_end_map - last chunk which annotations we want to modify
// NOTE: if __end % __block_size == 0, __annotations_end_map points at the next block, which may not exist
__map_const_iterator __annotations_beg_map = __map_.begin() + __beg / __block_size;
__map_const_iterator __annotations_end_map = __map_.begin() + __end / __block_size;
bool const __poisoning = __annotation_type == __asan_poison;
// __old_c_beg_index - index of the first element in old container
// __old_c_end_index - index of the end of old container (last + 1)
// Note: may be outside the area we are annotating
size_t __old_c_beg_index = (__poisoning && __place == __asan_front_moved) ? __beg : __start_;
size_t __old_c_end_index = (__poisoning && __place == __asan_back_moved) ? __end : __start_ + size();
bool const __front = __place == __asan_front_moved;
if (__poisoning && empty()) {
// Special case: we shouldn't trust __start_
__old_c_beg_index = __beg;
__old_c_end_index = __end;
}
// __old_c_beg_map - memory block (chunk) with first element
// __old_c_end_map - memory block (chunk) with end of old container
// Note: if __old_c_end_index % __block_size == 0, __old_c_end_map points at the next block,
// which may not exist
__map_const_iterator __old_c_beg_map = __map_.begin() + __old_c_beg_index / __block_size;
__map_const_iterator __old_c_end_map = __map_.begin() + __old_c_end_index / __block_size;
// One edge (front/end) of the container was moved and one was not modified.
// __new_edge_index - index of new edge
// __new_edge_map - memory block (chunk) with new edge, it always equals to
// __annotations_beg_map or __annotations_end_map
// __old_edge_map - memory block (chunk) with old edge, it always equals to
// __old_c_beg_map or __old_c_end_map
size_t __new_edge_index = (__poisoning ^ __front) ? __beg : __end;
__map_const_iterator __new_edge_map = __map_.begin() + __new_edge_index / __block_size;
__map_const_iterator __old_edge_map = __front ? __old_c_end_map : __old_c_beg_map;
// We iterate over map pointers (chunks) and fully poison all memory blocks between the first and the last.
// First and last chunk may be partially poisoned.
// __annotate_end_map may point at not existing chunk, therefore we have to have a check for it.
for (__map_const_iterator __map_it = __annotations_beg_map; __map_it <= __annotations_end_map; ++__map_it) {
if (__map_it == __annotations_end_map && __end % __block_size == 0)
// Chunk may not exist, but nothing to do here anyway
break;
// The beginning and the end of the current memory block
const void* __mem_beg = std::__to_address(*__map_it);
const void* __mem_end = std::__to_address(*__map_it + __block_size);
// The beginning of memory-in-use in the memory block before container modification
const void* __old_beg =
(__map_it == __old_c_beg_map) ? std::__to_address(*__map_it + (__old_c_beg_index % __block_size)) : __mem_beg;
// The end of memory-in-use in the memory block before container modification
const void* __old_end;
if (__map_it < __old_c_beg_map || __map_it > __old_c_end_map || (!__poisoning && empty()))
__old_end = __old_beg;
else
__old_end = (__map_it == __old_c_end_map)
? std::__to_address(*__map_it + (__old_c_end_index % __block_size))
: __mem_end;
// New edge of the container in current memory block
// If the edge is in a different chunk it points on corresponding end of the memory block
const void* __new_edge;
if (__map_it == __new_edge_map)
__new_edge = std::__to_address(*__map_it + (__new_edge_index % __block_size));
else
__new_edge = (__poisoning ^ __front) ? __mem_beg : __mem_end;
// Not modified edge of the container
// If the edge is in a different chunk it points on corresponding end of the memory block
const void* __old_edge;
if (__map_it == __old_edge_map)
__old_edge = __front ? __old_end : __old_beg;
else
__old_edge = __front ? __mem_end : __mem_beg;
// __new_beg - the beginning of memory-in-use in the memory block after container modification
// __new_end - the end of memory-in-use in the memory block after container modification
const void* __new_beg = __front ? __new_edge : __old_edge;
const void* __new_end = __front ? __old_edge : __new_edge;
std::__annotate_double_ended_contiguous_container<_Allocator>(
__mem_beg, __mem_end, __old_beg, __old_end, __new_beg, __new_end);
}
# endif // _LIBCPP_HAS_ASAN
}
_LIBCPP_HIDE_FROM_ABI void __annotate_new(size_type __current_size) const _NOEXCEPT {
(void)__current_size;
# if _LIBCPP_HAS_ASAN
if (__current_size == 0)
__annotate_from_to(0, __map_.size() * __block_size, __asan_poison, __asan_back_moved);
else {
__annotate_from_to(0, __start_, __asan_poison, __asan_front_moved);
__annotate_from_to(__start_ + __current_size, __map_.size() * __block_size, __asan_poison, __asan_back_moved);
}
# endif // _LIBCPP_HAS_ASAN
}
_LIBCPP_HIDE_FROM_ABI void __annotate_delete() const _NOEXCEPT {
# if _LIBCPP_HAS_ASAN
if (empty()) {
for (size_t __i = 0; __i < __map_.size(); ++__i) {
__annotate_whole_block(__i, __asan_unposion);
}
} else {
__annotate_from_to(0, __start_, __asan_unposion, __asan_front_moved);
__annotate_from_to(__start_ + size(), __map_.size() * __block_size, __asan_unposion, __asan_back_moved);
}
# endif // _LIBCPP_HAS_ASAN
}
_LIBCPP_HIDE_FROM_ABI void __annotate_increase_front(size_type __n) const _NOEXCEPT {
(void)__n;
# if _LIBCPP_HAS_ASAN
__annotate_from_to(__start_ - __n, __start_, __asan_unposion, __asan_front_moved);
# endif
}
_LIBCPP_HIDE_FROM_ABI void __annotate_increase_back(size_type __n) const _NOEXCEPT {
(void)__n;
# if _LIBCPP_HAS_ASAN
__annotate_from_to(__start_ + size(), __start_ + size() + __n, __asan_unposion, __asan_back_moved);
# endif
}
_LIBCPP_HIDE_FROM_ABI void __annotate_shrink_front(size_type __old_size, size_type __old_start) const _NOEXCEPT {
(void)__old_size;
(void)__old_start;
# if _LIBCPP_HAS_ASAN
__annotate_from_to(__old_start, __old_start + (__old_size - size()), __asan_poison, __asan_front_moved);
# endif
}
_LIBCPP_HIDE_FROM_ABI void __annotate_shrink_back(size_type __old_size, size_type __old_start) const _NOEXCEPT {
(void)__old_size;
(void)__old_start;
# if _LIBCPP_HAS_ASAN
__annotate_from_to(__old_start + size(), __old_start + __old_size, __asan_poison, __asan_back_moved);
# endif
}
_LIBCPP_HIDE_FROM_ABI void __annotate_poison_block(const void* __beginning, const void* __end) const _NOEXCEPT {
std::__annotate_double_ended_contiguous_container<_Allocator>(__beginning, __end, __beginning, __end, __end, __end);
}
_LIBCPP_HIDE_FROM_ABI void
__annotate_whole_block(size_t __block_index, __asan_annotation_type __annotation_type) const _NOEXCEPT {
(void)__block_index;
(void)__annotation_type;
# if _LIBCPP_HAS_ASAN
__map_const_iterator __block_it = __map_.begin() + __block_index;
const void* __block_start = std::__to_address(*__block_it);
const void* __block_end = std::__to_address(*__block_it + __block_size);
if (__annotation_type == __asan_poison)
__annotate_poison_block(__block_start, __block_end);
else {
std::__annotate_double_ended_contiguous_container<_Allocator>(
__block_start, __block_end, __block_start, __block_start, __block_start, __block_end);
}
# endif
}
# if _LIBCPP_HAS_ASAN
public:
_LIBCPP_HIDE_FROM_ABI bool __verify_asan_annotations() const _NOEXCEPT {
// This function tests deque object annotations.
if (empty()) {
for (__map_const_iterator __it = __map_.begin(); __it != __map_.end(); ++__it) {
if (!__sanitizer_verify_double_ended_contiguous_container(
std::__to_address(*__it),
std::__to_address(*__it),
std::__to_address(*__it),
std::__to_address(*__it + __block_size)))
return false;
}
return true;
}
size_type __end = __start_ + size();
__map_const_iterator __first_mp = __map_.begin() + __start_ / __block_size;
__map_const_iterator __last_mp = __map_.begin() + (__end - 1) / __block_size;
// Pointers to first and after last elements
// Those can be in different deque blocks
const void* __p_beg = std::__to_address(*__first_mp + (__start_ % __block_size));
const void* __p_end =
std::__to_address(*__last_mp + ((__end % __block_size == 0) ? __block_size : __end % __block_size));
for (__map_const_iterator __it = __map_.begin(); __it != __map_.end(); ++__it) {
// Go over all blocks, find the place we are in and verify its annotations
// Note that __p_end points *behind* the last item.
// - blocks before the first block with container elements
// - first block with items
// - last block with items
// - blocks after last block with ciontainer elements
// Is the block before or after deque blocks that contain elements?
if (__it < __first_mp || __it > __last_mp) {
if (!__sanitizer_verify_double_ended_contiguous_container(
std::__to_address(*__it),
std::__to_address(*__it),
std::__to_address(*__it),
std::__to_address(*__it + __block_size)))
return false;
} else {
const void* __containers_buffer_beg = (__it == __first_mp) ? __p_beg : (const void*)std::__to_address(*__it);
const void* __containers_buffer_end =
(__it == __last_mp) ? __p_end : (const void*)std::__to_address(*__it + __block_size);
if (!__sanitizer_verify_double_ended_contiguous_container(
std::__to_address(*__it),
__containers_buffer_beg,
__containers_buffer_end,
std::__to_address(*__it + __block_size))) {
return false;
}
}
}
return true;
}
private:
# endif // _LIBCPP_HAS_ASAN
_LIBCPP_HIDE_FROM_ABI bool __maybe_remove_front_spare(bool __keep_one = true) {
if (__front_spare_blocks() >= 2 || (!__keep_one && __front_spare_blocks())) {
__annotate_whole_block(0, __asan_unposion);
__alloc_traits::deallocate(__alloc(), __map_.front(), __block_size);
__map_.pop_front();
__start_ -= __block_size;
return true;
}
return false;
}
_LIBCPP_HIDE_FROM_ABI bool __maybe_remove_back_spare(bool __keep_one = true) {
if (__back_spare_blocks() >= 2 || (!__keep_one && __back_spare_blocks())) {
__annotate_whole_block(__map_.size() - 1, __asan_unposion);
__alloc_traits::deallocate(__alloc(), __map_.back(), __block_size);
__map_.pop_back();
return true;
}
return false;
}
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI void __assign_with_sentinel(_Iterator __f, _Sentinel __l);
template <class _RandomAccessIterator>
_LIBCPP_HIDE_FROM_ABI void __assign_with_size_random_access(_RandomAccessIterator __f, difference_type __n);
template <class _Iterator>
_LIBCPP_HIDE_FROM_ABI void __assign_with_size(_Iterator __f, difference_type __n);
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI iterator __insert_with_sentinel(const_iterator __p, _Iterator __f, _Sentinel __l);
template <class _Iterator>
_LIBCPP_HIDE_FROM_ABI iterator __insert_with_size(const_iterator __p, _Iterator __f, size_type __n);
template <class _BiIter, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI iterator
__insert_bidirectional(const_iterator __p, _BiIter __f, _Sentinel __sent, size_type __n);
template <class _BiIter>
_LIBCPP_HIDE_FROM_ABI iterator __insert_bidirectional(const_iterator __p, _BiIter __f, _BiIter __l, size_type __n);
template <class _InpIter, __enable_if_t<__has_exactly_input_iterator_category<_InpIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI void __append(_InpIter __f, _InpIter __l);
template <class _ForIter, __enable_if_t<__has_forward_iterator_category<_ForIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI void __append(_ForIter __f, _ForIter __l);
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI void __append_with_size(_InputIterator __from, size_type __n);
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI void __append_with_sentinel(_InputIterator __f, _Sentinel __l);
_LIBCPP_HIDE_FROM_ABI void __append(size_type __n);
_LIBCPP_HIDE_FROM_ABI void __append(size_type __n, const value_type& __v);
_LIBCPP_HIDE_FROM_ABI void __erase_to_end(const_iterator __f);
_LIBCPP_HIDE_FROM_ABI void __add_front_capacity();
_LIBCPP_HIDE_FROM_ABI void __add_front_capacity(size_type __n);
_LIBCPP_HIDE_FROM_ABI void __add_back_capacity();
_LIBCPP_HIDE_FROM_ABI void __add_back_capacity(size_type __n);
_LIBCPP_HIDE_FROM_ABI iterator __move_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt);
_LIBCPP_HIDE_FROM_ABI iterator
__move_backward_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt);
_LIBCPP_HIDE_FROM_ABI void __move_construct_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt);
_LIBCPP_HIDE_FROM_ABI void
__move_construct_backward_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt);
_LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const deque& __c) {
__copy_assign_alloc(__c, integral_constant<bool, __alloc_traits::propagate_on_container_copy_assignment::value>());
}
_LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const deque& __c, true_type) {
if (__alloc() != __c.__alloc()) {
clear();
shrink_to_fit();
}
__alloc() = __c.__alloc();
__map_.__alloc_ = __c.__map_.__alloc_;
}
_LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const deque&, false_type) {}
_LIBCPP_HIDE_FROM_ABI void __move_assign(deque& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
_LIBCPP_HIDE_FROM_ABI void __move_assign(deque& __c, false_type);
};
template <class _Tp, class _Alloc>
_LIBCPP_CONSTEXPR const typename allocator_traits<_Alloc>::difference_type deque<_Tp, _Alloc>::__block_size =
__deque_block_size<value_type, difference_type>::value;
# 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> >
deque(_InputIterator, _InputIterator) -> deque<__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> >
deque(_InputIterator, _InputIterator, _Alloc) -> deque<__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> >
deque(from_range_t, _Range&&, _Alloc = _Alloc()) -> deque<ranges::range_value_t<_Range>, _Alloc>;
# endif
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(size_type __n) : __start_(0), __size_(0) {
__annotate_new(0);
if (__n > 0)
__append(__n);
}
# if _LIBCPP_STD_VER >= 14
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(size_type __n, const _Allocator& __a)
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
__annotate_new(0);
if (__n > 0)
__append(__n);
}
# endif
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(size_type __n, const value_type& __v) : __start_(0), __size_(0) {
__annotate_new(0);
if (__n > 0)
__append(__n, __v);
}
template <class _Tp, class _Allocator>
template <class _InputIter, __enable_if_t<__has_input_iterator_category<_InputIter>::value, int> >
deque<_Tp, _Allocator>::deque(_InputIter __f, _InputIter __l) : __start_(0), __size_(0) {
__annotate_new(0);
__append(__f, __l);
}
template <class _Tp, class _Allocator>
template <class _InputIter, __enable_if_t<__has_input_iterator_category<_InputIter>::value, int> >
deque<_Tp, _Allocator>::deque(_InputIter __f, _InputIter __l, const allocator_type& __a)
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
__annotate_new(0);
__append(__f, __l);
}
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(const deque& __c)
: __map_(__pointer_allocator(__alloc_traits::select_on_container_copy_construction(__c.__alloc()))),
__start_(0),
__size_(0),
__alloc_(__map_.__alloc_) {
__annotate_new(0);
__append(__c.begin(), __c.end());
}
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(const deque& __c, const __type_identity_t<allocator_type>& __a)
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
__annotate_new(0);
__append(__c.begin(), __c.end());
}
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>& deque<_Tp, _Allocator>::operator=(const deque& __c) {
if (this != std::addressof(__c)) {
__copy_assign_alloc(__c);
assign(__c.begin(), __c.end());
}
return *this;
}
# ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(initializer_list<value_type> __il) : __start_(0), __size_(0) {
__annotate_new(0);
__append(__il.begin(), __il.end());
}
template <class _Tp, class _Allocator>
deque<_Tp, _Allocator>::deque(initializer_list<value_type> __il, const allocator_type& __a)
: __map_(__pointer_allocator(__a)), __start_(0), __size_(0), __alloc_(__a) {
__annotate_new(0);
__append(__il.begin(), __il.end());
}
template <class _Tp, class _Allocator>
inline deque<_Tp, _Allocator>::deque(deque&& __c) noexcept(is_nothrow_move_constructible<allocator_type>::value)
: __map_(std::move(__c.__map_)),
__start_(std::move(__c.__start_)),
__size_(std::move(__c.__size_)),
__alloc_(std::move(__c.__alloc_)) {
__c.__start_ = 0;
__c.__size() = 0;
}
template <class _Tp, class _Allocator>
inline deque<_Tp, _Allocator>::deque(deque&& __c, const __type_identity_t<allocator_type>& __a)
: __map_(std::move(__c.__map_), __pointer_allocator(__a)),
__start_(std::move(__c.__start_)),
__size_(std::move(__c.__size_)),
__alloc_(__a) {
if (__a == __c.__alloc()) {
__c.__start_ = 0;
__c.__size() = 0;
} else {
__map_.clear();
__start_ = 0;
__size() = 0;
typedef move_iterator<iterator> _Ip;
assign(_Ip(__c.begin()), _Ip(__c.end()));
}
}
template <class _Tp, class _Allocator>
inline deque<_Tp, _Allocator>& deque<_Tp, _Allocator>::operator=(deque&& __c) noexcept(
(__alloc_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value) ||
__alloc_traits::is_always_equal::value) {
__move_assign(__c, integral_constant<bool, __alloc_traits::propagate_on_container_move_assignment::value>());
return *this;
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__move_assign(deque& __c, false_type) {
if (__alloc() != __c.__alloc()) {
typedef move_iterator<iterator> _Ip;
assign(_Ip(__c.begin()), _Ip(__c.end()));
} else
__move_assign(__c, true_type());
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__move_assign(deque& __c,
true_type) noexcept(is_nothrow_move_assignable<allocator_type>::value) {
clear();
shrink_to_fit();
__move_assign(__c);
}
# endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Allocator>
template <class _InputIter,
__enable_if_t<__has_input_iterator_category<_InputIter>::value &&
!__has_random_access_iterator_category<_InputIter>::value,
int> >
void deque<_Tp, _Allocator>::assign(_InputIter __f, _InputIter __l) {
__assign_with_sentinel(__f, __l);
}
template <class _Tp, class _Allocator>
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI void deque<_Tp, _Allocator>::__assign_with_sentinel(_Iterator __f, _Sentinel __l) {
iterator __i = begin();
iterator __e = end();
for (; __f != __l && __i != __e; ++__f, (void)++__i)
*__i = *__f;
if (__f != __l)
__append_with_sentinel(std::move(__f), std::move(__l));
else
__erase_to_end(__i);
}
template <class _Tp, class _Allocator>
template <class _RAIter, __enable_if_t<__has_random_access_iterator_category<_RAIter>::value, int> >
void deque<_Tp, _Allocator>::assign(_RAIter __f, _RAIter __l) {
__assign_with_size_random_access(__f, __l - __f);
}
template <class _Tp, class _Allocator>
template <class _RandomAccessIterator>
_LIBCPP_HIDE_FROM_ABI void
deque<_Tp, _Allocator>::__assign_with_size_random_access(_RandomAccessIterator __f, difference_type __n) {
if (static_cast<size_type>(__n) > size()) {
auto __l = __f + size();
std::copy(__f, __l, begin());
__append_with_size(__l, __n - size());
} else
__erase_to_end(std::copy_n(__f, __n, begin()));
}
template <class _Tp, class _Allocator>
template <class _Iterator>
_LIBCPP_HIDE_FROM_ABI void deque<_Tp, _Allocator>::__assign_with_size(_Iterator __f, difference_type __n) {
if (static_cast<size_type>(__n) > size()) {
auto __added_size = __n - size();
auto __i = begin();
for (auto __count = size(); __count != 0; --__count) {
*__i++ = *__f++;
}
__append_with_size(__f, __added_size);
} else {
__erase_to_end(std::copy_n(__f, __n, begin()));
}
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::assign(size_type __n, const value_type& __v) {
if (__n > size()) {
std::fill_n(begin(), size(), __v);
__n -= size();
__append(__n, __v);
} else
__erase_to_end(std::fill_n(begin(), __n, __v));
}
template <class _Tp, class _Allocator>
inline _Allocator deque<_Tp, _Allocator>::get_allocator() const _NOEXCEPT {
return __alloc();
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::resize(size_type __n) {
if (__n > size())
__append(__n - size());
else if (__n < size())
__erase_to_end(begin() + __n);
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::resize(size_type __n, const value_type& __v) {
if (__n > size())
__append(__n - size(), __v);
else if (__n < size())
__erase_to_end(begin() + __n);
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::shrink_to_fit() _NOEXCEPT {
allocator_type& __a = __alloc();
if (empty()) {
__annotate_delete();
while (__map_.size() > 0) {
__alloc_traits::deallocate(__a, __map_.back(), __block_size);
__map_.pop_back();
}
__start_ = 0;
} else {
__maybe_remove_front_spare(/*__keep_one=*/false);
__maybe_remove_back_spare(/*__keep_one=*/false);
}
__map_.shrink_to_fit();
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::reference deque<_Tp, _Allocator>::operator[](size_type __i) _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__i < size(), "deque::operator[] index out of bounds");
size_type __p = __start_ + __i;
return *(*(__map_.begin() + __p / __block_size) + __p % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::const_reference
deque<_Tp, _Allocator>::operator[](size_type __i) const _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__i < size(), "deque::operator[] index out of bounds");
size_type __p = __start_ + __i;
return *(*(__map_.begin() + __p / __block_size) + __p % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::reference deque<_Tp, _Allocator>::at(size_type __i) {
if (__i >= size())
std::__throw_out_of_range("deque");
size_type __p = __start_ + __i;
return *(*(__map_.begin() + __p / __block_size) + __p % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::const_reference deque<_Tp, _Allocator>::at(size_type __i) const {
if (__i >= size())
std::__throw_out_of_range("deque");
size_type __p = __start_ + __i;
return *(*(__map_.begin() + __p / __block_size) + __p % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::reference deque<_Tp, _Allocator>::front() _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "deque::front called on an empty deque");
return *(*(__map_.begin() + __start_ / __block_size) + __start_ % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::const_reference deque<_Tp, _Allocator>::front() const _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "deque::front called on an empty deque");
return *(*(__map_.begin() + __start_ / __block_size) + __start_ % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::reference deque<_Tp, _Allocator>::back() _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "deque::back called on an empty deque");
size_type __p = size() + __start_ - 1;
return *(*(__map_.begin() + __p / __block_size) + __p % __block_size);
}
template <class _Tp, class _Allocator>
inline typename deque<_Tp, _Allocator>::const_reference deque<_Tp, _Allocator>::back() const _NOEXCEPT {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "deque::back called on an empty deque");
size_type __p = size() + __start_ - 1;
return *(*(__map_.begin() + __p / __block_size) + __p % __block_size);
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::push_back(const value_type& __v) {
allocator_type& __a = __alloc();
if (__back_spare() == 0)
__add_back_capacity();
// __back_spare() >= 1
__annotate_increase_back(1);
__alloc_traits::construct(__a, std::addressof(*end()), __v);
++__size();
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::push_front(const value_type& __v) {
allocator_type& __a = __alloc();
if (__front_spare() == 0)
__add_front_capacity();
// __front_spare() >= 1
__annotate_increase_front(1);
__alloc_traits::construct(__a, std::addressof(*--begin()), __v);
--__start_;
++__size();
}
# ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::push_back(value_type&& __v) {
allocator_type& __a = __alloc();
if (__back_spare() == 0)
__add_back_capacity();
// __back_spare() >= 1
__annotate_increase_back(1);
__alloc_traits::construct(__a, std::addressof(*end()), std::move(__v));
++__size();
}
template <class _Tp, class _Allocator>
template <class... _Args>
# if _LIBCPP_STD_VER >= 17
typename deque<_Tp, _Allocator>::reference
# else
void
# endif
deque<_Tp, _Allocator>::emplace_back(_Args&&... __args) {
allocator_type& __a = __alloc();
if (__back_spare() == 0)
__add_back_capacity();
// __back_spare() >= 1
__annotate_increase_back(1);
__alloc_traits::construct(__a, std::addressof(*end()), std::forward<_Args>(__args)...);
++__size();
# if _LIBCPP_STD_VER >= 17
return *--end();
# endif
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::push_front(value_type&& __v) {
allocator_type& __a = __alloc();
if (__front_spare() == 0)
__add_front_capacity();
// __front_spare() >= 1
__annotate_increase_front(1);
__alloc_traits::construct(__a, std::addressof(*--begin()), std::move(__v));
--__start_;
++__size();
}
template <class _Tp, class _Allocator>
template <class... _Args>
# if _LIBCPP_STD_VER >= 17
typename deque<_Tp, _Allocator>::reference
# else
void
# endif
deque<_Tp, _Allocator>::emplace_front(_Args&&... __args) {
allocator_type& __a = __alloc();
if (__front_spare() == 0)
__add_front_capacity();
// __front_spare() >= 1
__annotate_increase_front(1);
__alloc_traits::construct(__a, std::addressof(*--begin()), std::forward<_Args>(__args)...);
--__start_;
++__size();
# if _LIBCPP_STD_VER >= 17
return *begin();
# endif
}
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator deque<_Tp, _Allocator>::insert(const_iterator __p, value_type&& __v) {
size_type __pos = __p - begin();
size_type __to_end = size() - __pos;
allocator_type& __a = __alloc();
if (__pos < __to_end) { // insert by shifting things backward
if (__front_spare() == 0)
__add_front_capacity();
// __front_spare() >= 1
__annotate_increase_front(1);
if (__pos == 0) {
__alloc_traits::construct(__a, std::addressof(*--begin()), std::move(__v));
--__start_;
++__size();
} else {
iterator __b = begin();
iterator __bm1 = std::prev(__b);
__alloc_traits::construct(__a, std::addressof(*__bm1), std::move(*__b));
--__start_;
++__size();
if (__pos > 1)
__b = std::move(std::next(__b), __b + __pos, __b);
*__b = std::move(__v);
}
} else { // insert by shifting things forward
if (__back_spare() == 0)
__add_back_capacity();
// __back_capacity >= 1
__annotate_increase_back(1);
size_type __de = size() - __pos;
if (__de == 0) {
__alloc_traits::construct(__a, std::addressof(*end()), std::move(__v));
++__size();
} else {
iterator __e = end();
iterator __em1 = std::prev(__e);
__alloc_traits::construct(__a, std::addressof(*__e), std::move(*__em1));
++__size();
if (__de > 1)
__e = std::move_backward(__e - __de, __em1, __e);
*--__e = std::move(__v);
}
}
return begin() + __pos;
}
template <class _Tp, class _Allocator>
template <class... _Args>
typename deque<_Tp, _Allocator>::iterator deque<_Tp, _Allocator>::emplace(const_iterator __p, _Args&&... __args) {
size_type __pos = __p - begin();
size_type __to_end = size() - __pos;
allocator_type& __a = __alloc();
if (__pos < __to_end) { // insert by shifting things backward
if (__front_spare() == 0)
__add_front_capacity();
// __front_spare() >= 1
__annotate_increase_front(1);
if (__pos == 0) {
__alloc_traits::construct(__a, std::addressof(*--begin()), std::forward<_Args>(__args)...);
--__start_;
++__size();
} else {
__temp_value<value_type, _Allocator> __tmp(__alloc(), std::forward<_Args>(__args)...);
iterator __b = begin();
iterator __bm1 = std::prev(__b);
__alloc_traits::construct(__a, std::addressof(*__bm1), std::move(*__b));
--__start_;
++__size();
if (__pos > 1)
__b = std::move(std::next(__b), __b + __pos, __b);
*__b = std::move(__tmp.get());
}
} else { // insert by shifting things forward
if (__back_spare() == 0)
__add_back_capacity();
// __back_capacity >= 1
__annotate_increase_back(1);
size_type __de = size() - __pos;
if (__de == 0) {
__alloc_traits::construct(__a, std::addressof(*end()), std::forward<_Args>(__args)...);
++__size();
} else {
__temp_value<value_type, _Allocator> __tmp(__alloc(), std::forward<_Args>(__args)...);
iterator __e = end();
iterator __em1 = std::prev(__e);
__alloc_traits::construct(__a, std::addressof(*__e), std::move(*__em1));
++__size();
if (__de > 1)
__e = std::move_backward(__e - __de, __em1, __e);
*--__e = std::move(__tmp.get());
}
}
return begin() + __pos;
}
# endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator deque<_Tp, _Allocator>::insert(const_iterator __p, const value_type& __v) {
size_type __pos = __p - begin();
size_type __to_end = size() - __pos;
allocator_type& __a = __alloc();
if (__pos < __to_end) { // insert by shifting things backward
if (__front_spare() == 0)
__add_front_capacity();
// __front_spare() >= 1
__annotate_increase_front(1);
if (__pos == 0) {
__alloc_traits::construct(__a, std::addressof(*--begin()), __v);
--__start_;
++__size();
} else {
const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v);
iterator __b = begin();
iterator __bm1 = std::prev(__b);
if (__vt == pointer_traits<const_pointer>::pointer_to(*__b))
__vt = pointer_traits<const_pointer>::pointer_to(*__bm1);
__alloc_traits::construct(__a, std::addressof(*__bm1), std::move(*__b));
--__start_;
++__size();
if (__pos > 1)
__b = __move_and_check(std::next(__b), __b + __pos, __b, __vt);
*__b = *__vt;
}
} else { // insert by shifting things forward
if (__back_spare() == 0)
__add_back_capacity();
// __back_capacity >= 1
__annotate_increase_back(1);
size_type __de = size() - __pos;
if (__de == 0) {
__alloc_traits::construct(__a, std::addressof(*end()), __v);
++__size();
} else {
const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v);
iterator __e = end();
iterator __em1 = std::prev(__e);
if (__vt == pointer_traits<const_pointer>::pointer_to(*__em1))
__vt = pointer_traits<const_pointer>::pointer_to(*__e);
__alloc_traits::construct(__a, std::addressof(*__e), std::move(*__em1));
++__size();
if (__de > 1)
__e = __move_backward_and_check(__e - __de, __em1, __e, __vt);
*--__e = *__vt;
}
}
return begin() + __pos;
}
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::insert(const_iterator __p, size_type __n, const value_type& __v) {
size_type __pos = __p - begin();
size_type __to_end = __size() - __pos;
allocator_type& __a = __alloc();
if (__pos < __to_end) { // insert by shifting things backward
if (__n > __front_spare())
__add_front_capacity(__n - __front_spare());
// __n <= __front_spare()
__annotate_increase_front(__n);
iterator __old_begin = begin();
iterator __i = __old_begin;
if (__n > __pos) {
for (size_type __m = __n - __pos; __m; --__m, --__start_, ++__size())
__alloc_traits::construct(__a, std::addressof(*--__i), __v);
__n = __pos;
}
if (__n > 0) {
const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v);
iterator __obn = __old_begin + __n;
__move_construct_backward_and_check(__old_begin, __obn, __i, __vt);
if (__n < __pos)
__old_begin = __move_and_check(__obn, __old_begin + __pos, __old_begin, __vt);
std::fill_n(__old_begin, __n, *__vt);
}
} else { // insert by shifting things forward
size_type __back_capacity = __back_spare();
if (__n > __back_capacity)
__add_back_capacity(__n - __back_capacity);
// __n <= __back_capacity
__annotate_increase_back(__n);
iterator __old_end = end();
iterator __i = __old_end;
size_type __de = size() - __pos;
if (__n > __de) {
for (size_type __m = __n - __de; __m; --__m, (void)++__i, ++__size())
__alloc_traits::construct(__a, std::addressof(*__i), __v);
__n = __de;
}
if (__n > 0) {
const_pointer __vt = pointer_traits<const_pointer>::pointer_to(__v);
iterator __oen = __old_end - __n;
__move_construct_and_check(__oen, __old_end, __i, __vt);
if (__n < __de)
__old_end = __move_backward_and_check(__old_end - __de, __oen, __old_end, __vt);
std::fill_n(__old_end - __n, __n, *__vt);
}
}
return begin() + __pos;
}
template <class _Tp, class _Allocator>
template <class _InputIter, __enable_if_t<__has_exactly_input_iterator_category<_InputIter>::value, int> >
typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::insert(const_iterator __p, _InputIter __f, _InputIter __l) {
return __insert_with_sentinel(__p, __f, __l);
}
template <class _Tp, class _Allocator>
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::__insert_with_sentinel(const_iterator __p, _Iterator __f, _Sentinel __l) {
__split_buffer<value_type, allocator_type&> __buf(__alloc());
__buf.__construct_at_end_with_sentinel(std::move(__f), std::move(__l));
typedef typename __split_buffer<value_type, allocator_type&>::iterator __bi;
return insert(__p, move_iterator<__bi>(__buf.begin()), move_iterator<__bi>(__buf.end()));
}
template <class _Tp, class _Allocator>
template <class _ForwardIterator, __enable_if_t<__has_exactly_forward_iterator_category<_ForwardIterator>::value, int> >
typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::insert(const_iterator __p, _ForwardIterator __f, _ForwardIterator __l) {
return __insert_with_size(__p, __f, std::distance(__f, __l));
}
template <class _Tp, class _Allocator>
template <class _Iterator>
_LIBCPP_HIDE_FROM_ABI typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::__insert_with_size(const_iterator __p, _Iterator __f, size_type __n) {
__split_buffer<value_type, allocator_type&> __buf(__n, 0, __alloc());
__buf.__construct_at_end_with_size(__f, __n);
typedef typename __split_buffer<value_type, allocator_type&>::iterator __fwd;
return insert(__p, move_iterator<__fwd>(__buf.begin()), move_iterator<__fwd>(__buf.end()));
}
template <class _Tp, class _Allocator>
template <class _BiIter, __enable_if_t<__has_bidirectional_iterator_category<_BiIter>::value, int> >
typename deque<_Tp, _Allocator>::iterator deque<_Tp, _Allocator>::insert(const_iterator __p, _BiIter __f, _BiIter __l) {
return __insert_bidirectional(__p, __f, __l, std::distance(__f, __l));
}
template <class _Tp, class _Allocator>
template <class _BiIter, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::__insert_bidirectional(const_iterator __p, _BiIter __f, _Sentinel, size_type __n) {
return __insert_bidirectional(__p, __f, std::next(__f, __n), __n);
}
template <class _Tp, class _Allocator>
template <class _BiIter>
_LIBCPP_HIDE_FROM_ABI typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::__insert_bidirectional(const_iterator __p, _BiIter __f, _BiIter __l, size_type __n) {
size_type __pos = __p - begin();
size_type __to_end = size() - __pos;
allocator_type& __a = __alloc();
if (__pos < __to_end) { // insert by shifting things backward
if (__n > __front_spare())
__add_front_capacity(__n - __front_spare());
// __n <= __front_spare()
__annotate_increase_front(__n);
iterator __old_begin = begin();
iterator __i = __old_begin;
_BiIter __m = __f;
if (__n > __pos) {
__m = __pos < __n / 2 ? std::prev(__l, __pos) : std::next(__f, __n - __pos);
for (_BiIter __j = __m; __j != __f; --__start_, ++__size())
__alloc_traits::construct(__a, std::addressof(*--__i), *--__j);
__n = __pos;
}
if (__n > 0) {
iterator __obn = __old_begin + __n;
for (iterator __j = __obn; __j != __old_begin;) {
__alloc_traits::construct(__a, std::addressof(*--__i), std::move(*--__j));
--__start_;
++__size();
}
if (__n < __pos)
__old_begin = std::move(__obn, __old_begin + __pos, __old_begin);
std::copy(__m, __l, __old_begin);
}
} else { // insert by shifting things forward
size_type __back_capacity = __back_spare();
if (__n > __back_capacity)
__add_back_capacity(__n - __back_capacity);
// __n <= __back_capacity
__annotate_increase_back(__n);
iterator __old_end = end();
iterator __i = __old_end;
_BiIter __m = __l;
size_type __de = size() - __pos;
if (__n > __de) {
__m = __de < __n / 2 ? std::next(__f, __de) : std::prev(__l, __n - __de);
for (_BiIter __j = __m; __j != __l; ++__i, (void)++__j, ++__size())
__alloc_traits::construct(__a, std::addressof(*__i), *__j);
__n = __de;
}
if (__n > 0) {
iterator __oen = __old_end - __n;
for (iterator __j = __oen; __j != __old_end; ++__i, (void)++__j, ++__size())
__alloc_traits::construct(__a, std::addressof(*__i), std::move(*__j));
if (__n < __de)
__old_end = std::move_backward(__old_end - __de, __oen, __old_end);
std::copy_backward(__f, __m, __old_end);
}
}
return begin() + __pos;
}
template <class _Tp, class _Allocator>
template <class _InpIter, __enable_if_t<__has_exactly_input_iterator_category<_InpIter>::value, int> >
void deque<_Tp, _Allocator>::__append(_InpIter __f, _InpIter __l) {
__append_with_sentinel(__f, __l);
}
template <class _Tp, class _Allocator>
template <class _InputIterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI void deque<_Tp, _Allocator>::__append_with_sentinel(_InputIterator __f, _Sentinel __l) {
for (; __f != __l; ++__f)
# ifdef _LIBCPP_CXX03_LANG
push_back(*__f);
# else
emplace_back(*__f);
# endif
}
template <class _Tp, class _Allocator>
template <class _ForIter, __enable_if_t<__has_forward_iterator_category<_ForIter>::value, int> >
void deque<_Tp, _Allocator>::__append(_ForIter __f, _ForIter __l) {
__append_with_size(__f, std::distance(__f, __l));
}
template <class _Tp, class _Allocator>
template <class _InputIterator>
_LIBCPP_HIDE_FROM_ABI void deque<_Tp, _Allocator>::__append_with_size(_InputIterator __f, size_type __n) {
allocator_type& __a = __alloc();
size_type __back_capacity = __back_spare();
if (__n > __back_capacity)
__add_back_capacity(__n - __back_capacity);
// __n <= __back_capacity
__annotate_increase_back(__n);
for (__deque_block_range __br : __deque_range(end(), end() + __n)) {
_ConstructTransaction __tx(this, __br);
for (; __tx.__pos_ != __tx.__end_; ++__tx.__pos_, (void)++__f) {
__alloc_traits::construct(__a, std::__to_address(__tx.__pos_), *__f);
}
}
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__append(size_type __n) {
allocator_type& __a = __alloc();
size_type __back_capacity = __back_spare();
if (__n > __back_capacity)
__add_back_capacity(__n - __back_capacity);
// __n <= __back_capacity
__annotate_increase_back(__n);
for (__deque_block_range __br : __deque_range(end(), end() + __n)) {
_ConstructTransaction __tx(this, __br);
for (; __tx.__pos_ != __tx.__end_; ++__tx.__pos_) {
__alloc_traits::construct(__a, std::__to_address(__tx.__pos_));
}
}
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__append(size_type __n, const value_type& __v) {
allocator_type& __a = __alloc();
size_type __back_capacity = __back_spare();
if (__n > __back_capacity)
__add_back_capacity(__n - __back_capacity);
// __n <= __back_capacity
__annotate_increase_back(__n);
for (__deque_block_range __br : __deque_range(end(), end() + __n)) {
_ConstructTransaction __tx(this, __br);
for (; __tx.__pos_ != __tx.__end_; ++__tx.__pos_) {
__alloc_traits::construct(__a, std::__to_address(__tx.__pos_), __v);
}
}
}
// Create front capacity for one block of elements.
// Strong guarantee. Either do it or don't touch anything.
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__add_front_capacity() {
allocator_type& __a = __alloc();
if (__back_spare() >= __block_size) {
__start_ += __block_size;
pointer __pt = __map_.back();
__map_.pop_back();
__map_.emplace_front(__pt);
}
// Else if __map_.size() < __map_.capacity() then we need to allocate 1 buffer
else if (__map_.size() < __map_.capacity()) { // we can put the new buffer into the map, but don't shift things around
// until all buffers are allocated. If we throw, we don't need to fix
// anything up (any added buffers are undetectible)
if (__map_.__front_spare() > 0)
__map_.emplace_front(__alloc_traits::allocate(__a, __block_size));
else {
__map_.emplace_back(__alloc_traits::allocate(__a, __block_size));
// Done allocating, reorder capacity
pointer __pt = __map_.back();
__map_.pop_back();
__map_.emplace_front(__pt);
}
__start_ = __map_.size() == 1 ? __block_size / 2 : __start_ + __block_size;
}
// Else need to allocate 1 buffer, *and* we need to reallocate __map_.
else {
__split_buffer<pointer, __pointer_allocator&> __buf(
std::max<size_type>(2 * __map_.capacity(), 1), 0, __map_.__alloc_);
typedef __allocator_destructor<_Allocator> _Dp;
unique_ptr<pointer, _Dp> __hold(__alloc_traits::allocate(__a, __block_size), _Dp(__a, __block_size));
__buf.emplace_back(__hold.get());
__hold.release();
for (__map_pointer __i = __map_.begin(); __i != __map_.end(); ++__i)
__buf.emplace_back(*__i);
std::swap(__map_.__first_, __buf.__first_);
std::swap(__map_.__begin_, __buf.__begin_);
std::swap(__map_.__end_, __buf.__end_);
std::swap(__map_.__cap_, __buf.__cap_);
__start_ = __map_.size() == 1 ? __block_size / 2 : __start_ + __block_size;
}
__annotate_whole_block(0, __asan_poison);
}
// Create front capacity for __n elements.
// Strong guarantee. Either do it or don't touch anything.
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__add_front_capacity(size_type __n) {
allocator_type& __a = __alloc();
size_type __nb = __recommend_blocks(__n + __map_.empty());
// Number of unused blocks at back:
size_type __back_capacity = __back_spare() / __block_size;
__back_capacity = std::min(__back_capacity, __nb); // don't take more than you need
__nb -= __back_capacity; // number of blocks need to allocate
// If __nb == 0, then we have sufficient capacity.
if (__nb == 0) {
__start_ += __block_size * __back_capacity;
for (; __back_capacity > 0; --__back_capacity) {
pointer __pt = __map_.back();
__map_.pop_back();
__map_.emplace_front(__pt);
}
}
// Else if __nb <= __map_.capacity() - __map_.size() then we need to allocate __nb buffers
else if (__nb <= __map_.capacity() -
__map_.size()) { // we can put the new buffers into the map, but don't shift things around
// until all buffers are allocated. If we throw, we don't need to fix
// anything up (any added buffers are undetectible)
for (; __nb > 0; --__nb, __start_ += __block_size - (__map_.size() == 1)) {
if (__map_.__front_spare() == 0)
break;
__map_.emplace_front(__alloc_traits::allocate(__a, __block_size));
__annotate_whole_block(0, __asan_poison);
}
for (; __nb > 0; --__nb, ++__back_capacity)
__map_.emplace_back(__alloc_traits::allocate(__a, __block_size));
// Done allocating, reorder capacity
__start_ += __back_capacity * __block_size;
for (; __back_capacity > 0; --__back_capacity) {
pointer __pt = __map_.back();
__map_.pop_back();
__map_.emplace_front(__pt);
__annotate_whole_block(0, __asan_poison);
}
}
// Else need to allocate __nb buffers, *and* we need to reallocate __map_.
else {
size_type __ds = (__nb + __back_capacity) * __block_size - __map_.empty();
__split_buffer<pointer, __pointer_allocator&> __buf(
std::max<size_type>(2 * __map_.capacity(), __nb + __map_.size()), 0, __map_.__alloc_);
# if _LIBCPP_HAS_EXCEPTIONS
try {
# endif // _LIBCPP_HAS_EXCEPTIONS
for (; __nb > 0; --__nb) {
__buf.emplace_back(__alloc_traits::allocate(__a, __block_size));
// ASan: this is empty container, we have to poison whole block
__annotate_poison_block(std::__to_address(__buf.back()), std::__to_address(__buf.back() + __block_size));
}
# if _LIBCPP_HAS_EXCEPTIONS
} catch (...) {
__annotate_delete();
for (__map_pointer __i = __buf.begin(); __i != __buf.end(); ++__i)
__alloc_traits::deallocate(__a, *__i, __block_size);
throw;
}
# endif // _LIBCPP_HAS_EXCEPTIONS
for (; __back_capacity > 0; --__back_capacity) {
__buf.emplace_back(__map_.back());
__map_.pop_back();
}
for (__map_pointer __i = __map_.begin(); __i != __map_.end(); ++__i)
__buf.emplace_back(*__i);
std::swap(__map_.__first_, __buf.__first_);
std::swap(__map_.__begin_, __buf.__begin_);
std::swap(__map_.__end_, __buf.__end_);
std::swap(__map_.__cap_, __buf.__cap_);
__start_ += __ds;
}
}
// Create back capacity for one block of elements.
// Strong guarantee. Either do it or don't touch anything.
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__add_back_capacity() {
allocator_type& __a = __alloc();
if (__front_spare() >= __block_size) {
__start_ -= __block_size;
pointer __pt = __map_.front();
__map_.pop_front();
__map_.emplace_back(__pt);
}
// Else if __nb <= __map_.capacity() - __map_.size() then we need to allocate __nb buffers
else if (__map_.size() < __map_.capacity()) { // we can put the new buffer into the map, but don't shift things around
// until it is allocated. If we throw, we don't need to fix
// anything up (any added buffers are undetectible)
if (__map_.__back_spare() != 0)
__map_.emplace_back(__alloc_traits::allocate(__a, __block_size));
else {
__map_.emplace_front(__alloc_traits::allocate(__a, __block_size));
// Done allocating, reorder capacity
pointer __pt = __map_.front();
__map_.pop_front();
__map_.emplace_back(__pt);
}
__annotate_whole_block(__map_.size() - 1, __asan_poison);
}
// Else need to allocate 1 buffer, *and* we need to reallocate __map_.
else {
__split_buffer<pointer, __pointer_allocator&> __buf(
std::max<size_type>(2 * __map_.capacity(), 1), __map_.size(), __map_.__alloc_);
typedef __allocator_destructor<_Allocator> _Dp;
unique_ptr<pointer, _Dp> __hold(__alloc_traits::allocate(__a, __block_size), _Dp(__a, __block_size));
__buf.emplace_back(__hold.get());
__hold.release();
for (__map_pointer __i = __map_.end(); __i != __map_.begin();)
__buf.emplace_front(*--__i);
std::swap(__map_.__first_, __buf.__first_);
std::swap(__map_.__begin_, __buf.__begin_);
std::swap(__map_.__end_, __buf.__end_);
std::swap(__map_.__cap_, __buf.__cap_);
__annotate_whole_block(__map_.size() - 1, __asan_poison);
}
}
// Create back capacity for __n elements.
// Strong guarantee. Either do it or don't touch anything.
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__add_back_capacity(size_type __n) {
allocator_type& __a = __alloc();
size_type __nb = __recommend_blocks(__n + __map_.empty());
// Number of unused blocks at front:
size_type __front_capacity = __front_spare() / __block_size;
__front_capacity = std::min(__front_capacity, __nb); // don't take more than you need
__nb -= __front_capacity; // number of blocks need to allocate
// If __nb == 0, then we have sufficient capacity.
if (__nb == 0) {
__start_ -= __block_size * __front_capacity;
for (; __front_capacity > 0; --__front_capacity) {
pointer __pt = __map_.front();
__map_.pop_front();
__map_.emplace_back(__pt);
}
}
// Else if __nb <= __map_.capacity() - __map_.size() then we need to allocate __nb buffers
else if (__nb <= __map_.capacity() -
__map_.size()) { // we can put the new buffers into the map, but don't shift things around
// until all buffers are allocated. If we throw, we don't need to fix
// anything up (any added buffers are undetectible)
for (; __nb > 0; --__nb) {
if (__map_.__back_spare() == 0)
break;
__map_.emplace_back(__alloc_traits::allocate(__a, __block_size));
__annotate_whole_block(__map_.size() - 1, __asan_poison);
}
for (; __nb > 0; --__nb, ++__front_capacity, __start_ += __block_size - (__map_.size() == 1)) {
__map_.emplace_front(__alloc_traits::allocate(__a, __block_size));
__annotate_whole_block(0, __asan_poison);
}
// Done allocating, reorder capacity
__start_ -= __block_size * __front_capacity;
for (; __front_capacity > 0; --__front_capacity) {
pointer __pt = __map_.front();
__map_.pop_front();
__map_.emplace_back(__pt);
}
}
// Else need to allocate __nb buffers, *and* we need to reallocate __map_.
else {
size_type __ds = __front_capacity * __block_size;
__split_buffer<pointer, __pointer_allocator&> __buf(
std::max<size_type>(2 * __map_.capacity(), __nb + __map_.size()),
__map_.size() - __front_capacity,
__map_.__alloc_);
# if _LIBCPP_HAS_EXCEPTIONS
try {
# endif // _LIBCPP_HAS_EXCEPTIONS
for (; __nb > 0; --__nb) {
__buf.emplace_back(__alloc_traits::allocate(__a, __block_size));
// ASan: this is an empty container, we have to poison the whole block
__annotate_poison_block(std::__to_address(__buf.back()), std::__to_address(__buf.back() + __block_size));
}
# if _LIBCPP_HAS_EXCEPTIONS
} catch (...) {
__annotate_delete();
for (__map_pointer __i = __buf.begin(); __i != __buf.end(); ++__i)
__alloc_traits::deallocate(__a, *__i, __block_size);
throw;
}
# endif // _LIBCPP_HAS_EXCEPTIONS
for (; __front_capacity > 0; --__front_capacity) {
__buf.emplace_back(__map_.front());
__map_.pop_front();
}
for (__map_pointer __i = __map_.end(); __i != __map_.begin();)
__buf.emplace_front(*--__i);
std::swap(__map_.__first_, __buf.__first_);
std::swap(__map_.__begin_, __buf.__begin_);
std::swap(__map_.__end_, __buf.__end_);
std::swap(__map_.__cap_, __buf.__cap_);
__start_ -= __ds;
}
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::pop_front() {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "deque::pop_front called on an empty deque");
size_type __old_sz = size();
size_type __old_start = __start_;
allocator_type& __a = __alloc();
__alloc_traits::destroy(
__a, std::__to_address(*(__map_.begin() + __start_ / __block_size) + __start_ % __block_size));
--__size();
++__start_;
__annotate_shrink_front(__old_sz, __old_start);
__maybe_remove_front_spare();
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::pop_back() {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "deque::pop_back called on an empty deque");
size_type __old_sz = size();
size_type __old_start = __start_;
allocator_type& __a = __alloc();
size_type __p = size() + __start_ - 1;
__alloc_traits::destroy(__a, std::__to_address(*(__map_.begin() + __p / __block_size) + __p % __block_size));
--__size();
__annotate_shrink_back(__old_sz, __old_start);
__maybe_remove_back_spare();
}
// move assign [__f, __l) to [__r, __r + (__l-__f)).
// If __vt points into [__f, __l), then subtract (__f - __r) from __vt.
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::__move_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt) {
// as if
// for (; __f != __l; ++__f, ++__r)
// *__r = std::move(*__f);
difference_type __n = __l - __f;
while (__n > 0) {
pointer __fb = __f.__ptr_;
pointer __fe = *__f.__m_iter_ + __block_size;
difference_type __bs = __fe - __fb;
if (__bs > __n) {
__bs = __n;
__fe = __fb + __bs;
}
if (__fb <= __vt && __vt < __fe)
__vt = (const_iterator(static_cast<__map_const_pointer>(__f.__m_iter_), __vt) -= __f - __r).__ptr_;
__r = std::move(__fb, __fe, __r);
__n -= __bs;
__f += __bs;
}
return __r;
}
// move assign [__f, __l) to [__r - (__l-__f), __r) backwards.
// If __vt points into [__f, __l), then add (__r - __l) to __vt.
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator
deque<_Tp, _Allocator>::__move_backward_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt) {
// as if
// while (__f != __l)
// *--__r = std::move(*--__l);
difference_type __n = __l - __f;
while (__n > 0) {
--__l;
pointer __lb = *__l.__m_iter_;
pointer __le = __l.__ptr_ + 1;
difference_type __bs = __le - __lb;
if (__bs > __n) {
__bs = __n;
__lb = __le - __bs;
}
if (__lb <= __vt && __vt < __le)
__vt = (const_iterator(static_cast<__map_const_pointer>(__l.__m_iter_), __vt) += __r - __l - 1).__ptr_;
__r = std::move_backward(__lb, __le, __r);
__n -= __bs;
__l -= __bs - 1;
}
return __r;
}
// move construct [__f, __l) to [__r, __r + (__l-__f)).
// If __vt points into [__f, __l), then add (__r - __f) to __vt.
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__move_construct_and_check(iterator __f, iterator __l, iterator __r, const_pointer& __vt) {
allocator_type& __a = __alloc();
// as if
// for (; __f != __l; ++__r, ++__f, ++__size())
// __alloc_traits::construct(__a, std::addressof(*__r), std::move(*__f));
difference_type __n = __l - __f;
while (__n > 0) {
pointer __fb = __f.__ptr_;
pointer __fe = *__f.__m_iter_ + __block_size;
difference_type __bs = __fe - __fb;
if (__bs > __n) {
__bs = __n;
__fe = __fb + __bs;
}
if (__fb <= __vt && __vt < __fe)
__vt = (const_iterator(static_cast<__map_const_pointer>(__f.__m_iter_), __vt) += __r - __f).__ptr_;
for (; __fb != __fe; ++__fb, ++__r, ++__size())
__alloc_traits::construct(__a, std::addressof(*__r), std::move(*__fb));
__n -= __bs;
__f += __bs;
}
}
// move construct [__f, __l) to [__r - (__l-__f), __r) backwards.
// If __vt points into [__f, __l), then subtract (__l - __r) from __vt.
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__move_construct_backward_and_check(
iterator __f, iterator __l, iterator __r, const_pointer& __vt) {
allocator_type& __a = __alloc();
// as if
// for (iterator __j = __l; __j != __f;)
// {
// __alloc_traitsconstruct(__a, std::addressof(*--__r), std::move(*--__j));
// --__start_;
// ++__size();
// }
difference_type __n = __l - __f;
while (__n > 0) {
--__l;
pointer __lb = *__l.__m_iter_;
pointer __le = __l.__ptr_ + 1;
difference_type __bs = __le - __lb;
if (__bs > __n) {
__bs = __n;
__lb = __le - __bs;
}
if (__lb <= __vt && __vt < __le)
__vt = (const_iterator(static_cast<__map_const_pointer>(__l.__m_iter_), __vt) -= __l - __r + 1).__ptr_;
while (__le != __lb) {
__alloc_traits::construct(__a, std::addressof(*--__r), std::move(*--__le));
--__start_;
++__size();
}
__n -= __bs;
__l -= __bs - 1;
}
}
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator deque<_Tp, _Allocator>::erase(const_iterator __f) {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(
__f != end(), "deque::erase(iterator) called with a non-dereferenceable iterator");
size_type __old_sz = size();
size_type __old_start = __start_;
iterator __b = begin();
difference_type __pos = __f - __b;
iterator __p = __b + __pos;
allocator_type& __a = __alloc();
if (static_cast<size_type>(__pos) <= (size() - 1) / 2) { // erase from front
std::move_backward(__b, __p, std::next(__p));
__alloc_traits::destroy(__a, std::addressof(*__b));
--__size();
++__start_;
__annotate_shrink_front(__old_sz, __old_start);
__maybe_remove_front_spare();
} else { // erase from back
iterator __i = std::move(std::next(__p), end(), __p);
__alloc_traits::destroy(__a, std::addressof(*__i));
--__size();
__annotate_shrink_back(__old_sz, __old_start);
__maybe_remove_back_spare();
}
return begin() + __pos;
}
template <class _Tp, class _Allocator>
typename deque<_Tp, _Allocator>::iterator deque<_Tp, _Allocator>::erase(const_iterator __f, const_iterator __l) {
_LIBCPP_ASSERT_VALID_INPUT_RANGE(__f <= __l, "deque::erase(first, last) called with an invalid range");
size_type __old_sz = size();
size_type __old_start = __start_;
difference_type __n = __l - __f;
iterator __b = begin();
difference_type __pos = __f - __b;
iterator __p = __b + __pos;
if (__n > 0) {
allocator_type& __a = __alloc();
if (static_cast<size_type>(__pos) <= (size() - __n) / 2) { // erase from front
iterator __i = std::move_backward(__b, __p, __p + __n);
for (; __b != __i; ++__b)
__alloc_traits::destroy(__a, std::addressof(*__b));
__size() -= __n;
__start_ += __n;
__annotate_shrink_front(__old_sz, __old_start);
while (__maybe_remove_front_spare()) {
}
} else { // erase from back
iterator __i = std::move(__p + __n, end(), __p);
for (iterator __e = end(); __i != __e; ++__i)
__alloc_traits::destroy(__a, std::addressof(*__i));
__size() -= __n;
__annotate_shrink_back(__old_sz, __old_start);
while (__maybe_remove_back_spare()) {
}
}
}
return begin() + __pos;
}
template <class _Tp, class _Allocator>
void deque<_Tp, _Allocator>::__erase_to_end(const_iterator __f) {
size_type __old_sz = size();
size_type __old_start = __start_;
iterator __e = end();
difference_type __n = __e - __f;
if (__n > 0) {
allocator_type& __a = __alloc();
iterator __b = begin();
difference_type __pos = __f - __b;
for (iterator __p = __b + __pos; __p != __e; ++__p)
__alloc_traits::destroy(__a, std::addressof(*__p));
__size() -= __n;
__annotate_shrink_back(__old_sz, __old_start);
while (__maybe_remove_back_spare()) {
}
}
}
template <class _Tp, class _Allocator>
inline void deque<_Tp, _Allocator>::swap(deque& __c)
# if _LIBCPP_STD_VER >= 14
_NOEXCEPT
# else
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || __is_nothrow_swappable_v<allocator_type>)
# endif
{
__map_.swap(__c.__map_);
std::swap(__start_, __c.__start_);
std::swap(__size(), __c.__size());
std::__swap_allocator(__alloc(), __c.__alloc());
}
template <class _Tp, class _Allocator>
inline void deque<_Tp, _Allocator>::clear() _NOEXCEPT {
__annotate_delete();
allocator_type& __a = __alloc();
for (iterator __i = begin(), __e = end(); __i != __e; ++__i)
__alloc_traits::destroy(__a, std::addressof(*__i));
__size() = 0;
while (__map_.size() > 2) {
__alloc_traits::deallocate(__a, __map_.front(), __block_size);
__map_.pop_front();
}
switch (__map_.size()) {
case 1:
__start_ = __block_size / 2;
break;
case 2:
__start_ = __block_size;
break;
}
__annotate_new(0);
}
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI bool operator==(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
const typename deque<_Tp, _Allocator>::size_type __sz = __x.size();
return __sz == __y.size() && std::equal(__x.begin(), __x.end(), __y.begin());
}
# if _LIBCPP_STD_VER <= 17
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
return !(__x == __y);
}
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI bool operator<(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
return std::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end());
}
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI bool operator>(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
return __y < __x;
}
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI bool operator>=(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
return !(__x < __y);
}
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI bool operator<=(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
return !(__y < __x);
}
# else // _LIBCPP_STD_VER <= 17
template <class _Tp, class _Allocator>
_LIBCPP_HIDE_FROM_ABI __synth_three_way_result<_Tp>
operator<=>(const deque<_Tp, _Allocator>& __x, const deque<_Tp, _Allocator>& __y) {
return std::lexicographical_compare_three_way(__x.begin(), __x.end(), __y.begin(), __y.end(), std::__synth_three_way);
}
# endif // _LIBCPP_STD_VER <= 17
template <class _Tp, class _Allocator>
inline _LIBCPP_HIDE_FROM_ABI void swap(deque<_Tp, _Allocator>& __x, deque<_Tp, _Allocator>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
# if _LIBCPP_STD_VER >= 20
template <class _Tp, class _Allocator, class _Up>
inline _LIBCPP_HIDE_FROM_ABI typename deque<_Tp, _Allocator>::size_type
erase(deque<_Tp, _Allocator>& __c, const _Up& __v) {
auto __old_size = __c.size();
__c.erase(std::remove(__c.begin(), __c.end(), __v), __c.end());
return __old_size - __c.size();
}
template <class _Tp, class _Allocator, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI typename deque<_Tp, _Allocator>::size_type
erase_if(deque<_Tp, _Allocator>& __c, _Predicate __pred) {
auto __old_size = __c.size();
__c.erase(std::remove_if(__c.begin(), __c.end(), __pred), __c.end());
return __old_size - __c.size();
}
template <>
inline constexpr bool __format::__enable_insertable<std::deque<char>> = true;
# if _LIBCPP_HAS_WIDE_CHARACTERS
template <>
inline constexpr bool __format::__enable_insertable<std::deque<wchar_t>> = true;
# endif
# endif // _LIBCPP_STD_VER >= 20
template <class _Tp, class _Allocator>
struct __container_traits<deque<_Tp, _Allocator> > {
// http://eel.is/c++draft/deque.modifiers#3
// If an exception is thrown other than by the copy constructor, move constructor, assignment operator, or move
// assignment operator of T, there are no effects. If an exception is thrown while inserting a single element at
// either end, there are no effects. Otherwise, if an exception is thrown by the move constructor of a
// non-Cpp17CopyInsertable T, the effects are unspecified.
static _LIBCPP_CONSTEXPR const bool __emplacement_has_strong_exception_safety_guarantee =
is_nothrow_move_constructible<_Tp>::value || __is_cpp17_copy_insertable_v<_Allocator>;
};
_LIBCPP_END_NAMESPACE_STD
# if _LIBCPP_STD_VER >= 17
_LIBCPP_BEGIN_NAMESPACE_STD
namespace pmr {
template <class _ValueT>
using deque _LIBCPP_AVAILABILITY_PMR = std::deque<_ValueT, polymorphic_allocator<_ValueT>>;
} // namespace pmr
_LIBCPP_END_NAMESPACE_STD
# endif
_LIBCPP_POP_MACROS
# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
# include <algorithm>
# include <atomic>
# include <concepts>
# include <cstdlib>
# include <functional>
# include <iosfwd>
# include <iterator>
# include <type_traits>
# include <typeinfo>
# endif
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#endif // _LIBCPP_DEQUE