// -*- 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_LIST
#define _LIBCPP_LIST
/*
list synopsis
namespace std
{
template <class T, class Alloc = allocator<T> >
class list
{
public:
// types:
typedef T value_type;
typedef Alloc allocator_type;
typedef typename allocator_type::reference reference;
typedef typename allocator_type::const_reference const_reference;
typedef typename allocator_type::pointer pointer;
typedef typename allocator_type::const_pointer const_pointer;
typedef implementation-defined iterator;
typedef implementation-defined const_iterator;
typedef implementation-defined size_type;
typedef implementation-defined difference_type;
typedef reverse_iterator<iterator> reverse_iterator;
typedef reverse_iterator<const_iterator> const_reverse_iterator;
list()
noexcept(is_nothrow_default_constructible<allocator_type>::value);
explicit list(const allocator_type& a);
explicit list(size_type n);
explicit list(size_type n, const allocator_type& a); // C++14
list(size_type n, const value_type& value);
list(size_type n, const value_type& value, const allocator_type& a);
template <class Iter>
list(Iter first, Iter last);
template <class Iter>
list(Iter first, Iter last, const allocator_type& a);
template<container-compatible-range<T> R>
list(from_range_t, R&& rg, const Allocator& = Allocator()); // C++23
list(const list& x);
list(const list&, const allocator_type& a);
list(list&& x)
noexcept(is_nothrow_move_constructible<allocator_type>::value);
list(list&&, const allocator_type& a);
list(initializer_list<value_type>);
list(initializer_list<value_type>, const allocator_type& a);
~list();
list& operator=(const list& x);
list& operator=(list&& x)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value);
list& operator=(initializer_list<value_type>);
template <class Iter>
void assign(Iter first, Iter last);
template<container-compatible-range<T> R>
void assign_range(R&& rg); // C++23
void assign(size_type n, const value_type& t);
void assign(initializer_list<value_type>);
allocator_type get_allocator() const noexcept;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
reverse_iterator rbegin() noexcept;
const_reverse_iterator rbegin() const noexcept;
reverse_iterator rend() noexcept;
const_reverse_iterator rend() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
const_reverse_iterator crbegin() const noexcept;
const_reverse_iterator crend() const noexcept;
reference front();
const_reference front() const;
reference back();
const_reference back() const;
bool empty() const noexcept;
size_type size() const noexcept;
size_type max_size() const noexcept;
template <class... Args>
reference emplace_front(Args&&... args); // reference in C++17
void pop_front();
template <class... Args>
reference emplace_back(Args&&... args); // reference in C++17
void pop_back();
void push_front(const value_type& x);
void push_front(value_type&& x);
template<container-compatible-range<T> R>
void prepend_range(R&& rg); // C++23
void push_back(const value_type& x);
void push_back(value_type&& x);
template<container-compatible-range<T> R>
void append_range(R&& rg); // C++23
template <class... Args>
iterator emplace(const_iterator position, Args&&... args);
iterator insert(const_iterator position, const value_type& x);
iterator insert(const_iterator position, value_type&& x);
iterator insert(const_iterator position, size_type n, const value_type& x);
template <class Iter>
iterator insert(const_iterator position, Iter first, Iter last);
template<container-compatible-range<T> R>
iterator insert_range(const_iterator position, R&& rg); // C++23
iterator insert(const_iterator position, initializer_list<value_type> il);
iterator erase(const_iterator position);
iterator erase(const_iterator position, const_iterator last);
void resize(size_type sz);
void resize(size_type sz, const value_type& c);
void swap(list&)
noexcept(allocator_traits<allocator_type>::is_always_equal::value); // C++17
void clear() noexcept;
void splice(const_iterator position, list& x);
void splice(const_iterator position, list&& x);
void splice(const_iterator position, list& x, const_iterator i);
void splice(const_iterator position, list&& x, const_iterator i);
void splice(const_iterator position, list& x, const_iterator first,
const_iterator last);
void splice(const_iterator position, list&& x, const_iterator first,
const_iterator last);
size_type remove(const value_type& value); // void before C++20
template <class Pred>
size_type remove_if(Pred pred); // void before C++20
size_type unique(); // void before C++20
template <class BinaryPredicate>
size_type unique(BinaryPredicate binary_pred); // void before C++20
void merge(list& x);
void merge(list&& x);
template <class Compare>
void merge(list& x, Compare comp);
template <class Compare>
void merge(list&& x, Compare comp);
void sort();
template <class Compare>
void sort(Compare comp);
void reverse() noexcept;
};
template <class InputIterator, class Allocator = allocator<typename iterator_traits<InputIterator>::value_type>>
list(InputIterator, InputIterator, Allocator = Allocator())
-> list<typename iterator_traits<InputIterator>::value_type, Allocator>; // C++17
template<ranges::input_range R, class Allocator = allocator<ranges::range_value_t<R>>>
list(from_range_t, R&&, Allocator = Allocator())
-> list<ranges::range_value_t<R>, Allocator>; // C++23
template <class T, class Alloc>
bool operator==(const list<T,Alloc>& x, const list<T,Alloc>& y);
template <class T, class Alloc>
bool operator< (const list<T,Alloc>& x, const list<T,Alloc>& y); // removed in C++20
template <class T, class Alloc>
bool operator!=(const list<T,Alloc>& x, const list<T,Alloc>& y); // removed in C++20
template <class T, class Alloc>
bool operator> (const list<T,Alloc>& x, const list<T,Alloc>& y); // removed in C++20
template <class T, class Alloc>
bool operator>=(const list<T,Alloc>& x, const list<T,Alloc>& y); // removed in C++20
template <class T, class Alloc>
bool operator<=(const list<T,Alloc>& x, const list<T,Alloc>& y); // removed in C++20
template<class T, class Allocator>
synth-three-way-result<T> operator<=>(const list<T, Allocator>& x,
const list<T, Allocator>& y); // since C++20
template <class T, class Alloc>
void swap(list<T,Alloc>& x, list<T,Alloc>& y)
noexcept(noexcept(x.swap(y)));
template <class T, class Allocator, class U>
typename list<T, Allocator>::size_type
erase(list<T, Allocator>& c, const U& value); // since C++20
template <class T, class Allocator, class Predicate>
typename list<T, Allocator>::size_type
erase_if(list<T, Allocator>& c, Predicate pred); // since C++20
} // std
*/
#include <__algorithm/comp.h>
#include <__algorithm/equal.h>
#include <__algorithm/lexicographical_compare.h>
#include <__algorithm/lexicographical_compare_three_way.h>
#include <__algorithm/min.h>
#include <__assert>
#include <__config>
#include <__format/enable_insertable.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 <__memory/addressof.h>
#include <__memory/allocation_guard.h>
#include <__memory/allocator.h>
#include <__memory/allocator_traits.h>
#include <__memory/compressed_pair.h>
#include <__memory/construct_at.h>
#include <__memory/pointer_traits.h>
#include <__memory/swap_allocator.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 <__type_traits/conditional.h>
#include <__type_traits/enable_if.h>
#include <__type_traits/is_allocator.h>
#include <__type_traits/is_nothrow_assignable.h>
#include <__type_traits/is_nothrow_constructible.h>
#include <__type_traits/is_pointer.h>
#include <__type_traits/is_same.h>
#include <__type_traits/type_identity.h>
#include <__utility/forward.h>
#include <__utility/move.h>
#include <__utility/swap.h>
#include <cstring>
#include <limits>
#include <new> // __launder
#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>
// [list.syn]
#include <compare>
#include <initializer_list>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Tp, class _VoidPtr>
struct __list_node;
template <class _Tp, class _VoidPtr>
struct __list_node_base;
template <class _Tp, class _VoidPtr>
struct __list_node_pointer_traits {
typedef __rebind_pointer_t<_VoidPtr, __list_node<_Tp, _VoidPtr> > __node_pointer;
typedef __rebind_pointer_t<_VoidPtr, __list_node_base<_Tp, _VoidPtr> > __base_pointer;
// TODO(LLVM 22): Remove this check
#ifndef _LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB
static_assert(sizeof(__node_pointer) == sizeof(__node_pointer) && _LIBCPP_ALIGNOF(__base_pointer) ==
_LIBCPP_ALIGNOF(__node_pointer),
"It looks like you are using std::list with a fancy pointer type that thas a different representation "
"depending on whether it points to a list base pointer or a list node pointer (both of which are "
"implementation details of the standard library). This means that your ABI is being broken between "
"LLVM 19 and LLVM 20. If you don't care about your ABI being broken, define the "
"_LIBCPP_ABI_LIST_REMOVE_NODE_POINTER_UB macro to silence this diagnostic.");
#endif
static _LIBCPP_HIDE_FROM_ABI __base_pointer __unsafe_link_pointer_cast(__base_pointer __p) { return __p; }
static _LIBCPP_HIDE_FROM_ABI __base_pointer __unsafe_link_pointer_cast(__node_pointer __p) {
return static_cast<__base_pointer>(static_cast<_VoidPtr>(__p));
}
};
template <class _Tp, class _VoidPtr>
struct __list_node_base {
typedef __list_node_pointer_traits<_Tp, _VoidPtr> _NodeTraits;
typedef typename _NodeTraits::__node_pointer __node_pointer;
typedef typename _NodeTraits::__base_pointer __base_pointer;
__base_pointer __prev_;
__base_pointer __next_;
_LIBCPP_HIDE_FROM_ABI __list_node_base() : __prev_(__self()), __next_(__self()) {}
_LIBCPP_HIDE_FROM_ABI explicit __list_node_base(__base_pointer __prev, __base_pointer __next)
: __prev_(__prev), __next_(__next) {}
_LIBCPP_HIDE_FROM_ABI __base_pointer __self() { return pointer_traits<__base_pointer>::pointer_to(*this); }
_LIBCPP_HIDE_FROM_ABI __node_pointer __as_node() { return static_cast<__node_pointer>(__self()); }
};
template <class _Tp, class _VoidPtr>
struct __list_node : public __list_node_base<_Tp, _VoidPtr> {
// We allow starting the lifetime of nodes without initializing the value held by the node,
// since that is handled by the list itself in order to be allocator-aware.
#ifndef _LIBCPP_CXX03_LANG
private:
union {
_Tp __value_;
};
public:
_LIBCPP_HIDE_FROM_ABI _Tp& __get_value() { return __value_; }
#else
private:
_ALIGNAS_TYPE(_Tp) char __buffer_[sizeof(_Tp)];
public:
_LIBCPP_HIDE_FROM_ABI _Tp& __get_value() { return *std::__launder(reinterpret_cast<_Tp*>(&__buffer_)); }
#endif
typedef __list_node_base<_Tp, _VoidPtr> __base;
typedef typename __base::__base_pointer __base_pointer;
_LIBCPP_HIDE_FROM_ABI explicit __list_node(__base_pointer __prev, __base_pointer __next) : __base(__prev, __next) {}
_LIBCPP_HIDE_FROM_ABI ~__list_node() {}
_LIBCPP_HIDE_FROM_ABI __base_pointer __as_link() { return __base::__self(); }
};
template <class _Tp, class _Alloc = allocator<_Tp> >
class _LIBCPP_TEMPLATE_VIS list;
template <class _Tp, class _Alloc>
class __list_imp;
template <class _Tp, class _VoidPtr>
class _LIBCPP_TEMPLATE_VIS __list_const_iterator;
template <class _Tp, class _VoidPtr>
class _LIBCPP_TEMPLATE_VIS __list_iterator {
typedef __list_node_pointer_traits<_Tp, _VoidPtr> _NodeTraits;
typedef typename _NodeTraits::__base_pointer __base_pointer;
__base_pointer __ptr_;
_LIBCPP_HIDE_FROM_ABI explicit __list_iterator(__base_pointer __p) _NOEXCEPT : __ptr_(__p) {}
template <class, class>
friend class list;
template <class, class>
friend class __list_imp;
template <class, class>
friend class __list_const_iterator;
public:
typedef bidirectional_iterator_tag iterator_category;
typedef _Tp value_type;
typedef value_type& reference;
typedef __rebind_pointer_t<_VoidPtr, value_type> pointer;
typedef typename pointer_traits<pointer>::difference_type difference_type;
_LIBCPP_HIDE_FROM_ABI __list_iterator() _NOEXCEPT : __ptr_(nullptr) {}
_LIBCPP_HIDE_FROM_ABI reference operator*() const { return __ptr_->__as_node()->__get_value(); }
_LIBCPP_HIDE_FROM_ABI pointer operator->() const {
return pointer_traits<pointer>::pointer_to(__ptr_->__as_node()->__get_value());
}
_LIBCPP_HIDE_FROM_ABI __list_iterator& operator++() {
__ptr_ = __ptr_->__next_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __list_iterator operator++(int) {
__list_iterator __t(*this);
++(*this);
return __t;
}
_LIBCPP_HIDE_FROM_ABI __list_iterator& operator--() {
__ptr_ = __ptr_->__prev_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __list_iterator operator--(int) {
__list_iterator __t(*this);
--(*this);
return __t;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator==(const __list_iterator& __x, const __list_iterator& __y) {
return __x.__ptr_ == __y.__ptr_;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const __list_iterator& __x, const __list_iterator& __y) {
return !(__x == __y);
}
};
template <class _Tp, class _VoidPtr>
class _LIBCPP_TEMPLATE_VIS __list_const_iterator {
typedef __list_node_pointer_traits<_Tp, _VoidPtr> _NodeTraits;
typedef typename _NodeTraits::__base_pointer __base_pointer;
__base_pointer __ptr_;
_LIBCPP_HIDE_FROM_ABI explicit __list_const_iterator(__base_pointer __p) _NOEXCEPT : __ptr_(__p) {}
template <class, class>
friend class list;
template <class, class>
friend class __list_imp;
public:
typedef bidirectional_iterator_tag iterator_category;
typedef _Tp value_type;
typedef const value_type& reference;
typedef __rebind_pointer_t<_VoidPtr, const value_type> pointer;
typedef typename pointer_traits<pointer>::difference_type difference_type;
_LIBCPP_HIDE_FROM_ABI __list_const_iterator() _NOEXCEPT : __ptr_(nullptr) {}
_LIBCPP_HIDE_FROM_ABI __list_const_iterator(const __list_iterator<_Tp, _VoidPtr>& __p) _NOEXCEPT
: __ptr_(__p.__ptr_) {}
_LIBCPP_HIDE_FROM_ABI reference operator*() const { return __ptr_->__as_node()->__get_value(); }
_LIBCPP_HIDE_FROM_ABI pointer operator->() const {
return pointer_traits<pointer>::pointer_to(__ptr_->__as_node()->__get_value());
}
_LIBCPP_HIDE_FROM_ABI __list_const_iterator& operator++() {
__ptr_ = __ptr_->__next_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __list_const_iterator operator++(int) {
__list_const_iterator __t(*this);
++(*this);
return __t;
}
_LIBCPP_HIDE_FROM_ABI __list_const_iterator& operator--() {
__ptr_ = __ptr_->__prev_;
return *this;
}
_LIBCPP_HIDE_FROM_ABI __list_const_iterator operator--(int) {
__list_const_iterator __t(*this);
--(*this);
return __t;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator==(const __list_const_iterator& __x, const __list_const_iterator& __y) {
return __x.__ptr_ == __y.__ptr_;
}
friend _LIBCPP_HIDE_FROM_ABI bool operator!=(const __list_const_iterator& __x, const __list_const_iterator& __y) {
return !(__x == __y);
}
};
template <class _Tp, class _Alloc>
class __list_imp {
public:
__list_imp(const __list_imp&) = delete;
__list_imp& operator=(const __list_imp&) = delete;
typedef _Alloc allocator_type;
typedef allocator_traits<allocator_type> __alloc_traits;
typedef typename __alloc_traits::size_type size_type;
protected:
typedef _Tp value_type;
typedef typename __alloc_traits::void_pointer __void_pointer;
typedef __list_iterator<value_type, __void_pointer> iterator;
typedef __list_const_iterator<value_type, __void_pointer> const_iterator;
typedef __list_node_base<value_type, __void_pointer> __node_base;
typedef __list_node<value_type, __void_pointer> __node_type;
typedef __rebind_alloc<__alloc_traits, __node_type> __node_allocator;
typedef allocator_traits<__node_allocator> __node_alloc_traits;
typedef typename __node_alloc_traits::pointer __node_pointer;
typedef typename __node_alloc_traits::pointer __node_const_pointer;
typedef __list_node_pointer_traits<value_type, __void_pointer> __node_pointer_traits;
typedef typename __node_pointer_traits::__base_pointer __base_pointer;
typedef __base_pointer __link_const_pointer;
typedef typename __alloc_traits::pointer pointer;
typedef typename __alloc_traits::const_pointer const_pointer;
typedef typename __alloc_traits::difference_type difference_type;
typedef __rebind_alloc<__alloc_traits, __node_base> __node_base_allocator;
typedef typename allocator_traits<__node_base_allocator>::pointer __node_base_pointer;
static_assert(!is_same<allocator_type, __node_allocator>::value,
"internal allocator type must differ from user-specified type; otherwise overload resolution breaks");
__node_base __end_;
_LIBCPP_COMPRESSED_PAIR(size_type, __size_, __node_allocator, __node_alloc_);
_LIBCPP_HIDE_FROM_ABI __base_pointer __end_as_link() const _NOEXCEPT {
return __node_pointer_traits::__unsafe_link_pointer_cast(const_cast<__node_base&>(__end_).__self());
}
_LIBCPP_HIDE_FROM_ABI size_type& __sz() _NOEXCEPT { return __size_; }
_LIBCPP_HIDE_FROM_ABI const size_type& __sz() const _NOEXCEPT { return __size_; }
_LIBCPP_HIDE_FROM_ABI __node_allocator& __node_alloc() _NOEXCEPT { return __node_alloc_; }
_LIBCPP_HIDE_FROM_ABI const __node_allocator& __node_alloc() const _NOEXCEPT { return __node_alloc_; }
_LIBCPP_HIDE_FROM_ABI size_type __node_alloc_max_size() const _NOEXCEPT {
return __node_alloc_traits::max_size(__node_alloc());
}
_LIBCPP_HIDE_FROM_ABI static void __unlink_nodes(__base_pointer __f, __base_pointer __l) _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI __list_imp() _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value);
_LIBCPP_HIDE_FROM_ABI __list_imp(const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI __list_imp(const __node_allocator& __a);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI __list_imp(__node_allocator&& __a) _NOEXCEPT;
#endif
_LIBCPP_HIDE_FROM_ABI ~__list_imp();
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return __sz() == 0; }
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT { return iterator(__end_.__next_); }
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT { return const_iterator(__end_.__next_); }
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT { return iterator(__end_as_link()); }
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT { return const_iterator(__end_as_link()); }
_LIBCPP_HIDE_FROM_ABI void swap(__list_imp& __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 __copy_assign_alloc(const __list_imp& __c) {
__copy_assign_alloc(
__c, integral_constant<bool, __node_alloc_traits::propagate_on_container_copy_assignment::value>());
}
_LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(__list_imp& __c)
_NOEXCEPT_(!__node_alloc_traits::propagate_on_container_move_assignment::value ||
is_nothrow_move_assignable<__node_allocator>::value) {
__move_assign_alloc(
__c, integral_constant<bool, __node_alloc_traits::propagate_on_container_move_assignment::value>());
}
template <class... _Args>
_LIBCPP_HIDE_FROM_ABI __node_pointer __create_node(__base_pointer __prev, __base_pointer __next, _Args&&... __args) {
__node_allocator& __alloc = __node_alloc();
__allocation_guard<__node_allocator> __guard(__alloc, 1);
// Begin the lifetime of the node itself. Note that this doesn't begin the lifetime of the value
// held inside the node, since we need to use the allocator's construct() method for that.
//
// We don't use the allocator's construct() method to construct the node itself since the
// Cpp17FooInsertable named requirements don't require the allocator's construct() method
// to work on anything other than the value_type.
std::__construct_at(std::addressof(*__guard.__get()), __prev, __next);
// Now construct the value_type using the allocator's construct() method.
__node_alloc_traits::construct(
__alloc, std::addressof(__guard.__get()->__get_value()), std::forward<_Args>(__args)...);
return __guard.__release_ptr();
}
_LIBCPP_HIDE_FROM_ABI void __delete_node(__node_pointer __node) {
// For the same reason as above, we use the allocator's destroy() method for the value_type,
// but not for the node itself.
__node_allocator& __alloc = __node_alloc();
__node_alloc_traits::destroy(__alloc, std::addressof(__node->__get_value()));
std::__destroy_at(std::addressof(*__node));
__node_alloc_traits::deallocate(__alloc, __node, 1);
}
private:
_LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const __list_imp& __c, true_type) {
if (__node_alloc() != __c.__node_alloc())
clear();
__node_alloc() = __c.__node_alloc();
}
_LIBCPP_HIDE_FROM_ABI void __copy_assign_alloc(const __list_imp&, false_type) {}
_LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(__list_imp& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value) {
__node_alloc() = std::move(__c.__node_alloc());
}
_LIBCPP_HIDE_FROM_ABI void __move_assign_alloc(__list_imp&, false_type) _NOEXCEPT {}
};
// Unlink nodes [__f, __l]
template <class _Tp, class _Alloc>
inline void __list_imp<_Tp, _Alloc>::__unlink_nodes(__base_pointer __f, __base_pointer __l) _NOEXCEPT {
__f->__prev_->__next_ = __l->__next_;
__l->__next_->__prev_ = __f->__prev_;
}
template <class _Tp, class _Alloc>
inline __list_imp<_Tp, _Alloc>::__list_imp() _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
: __size_(0) {}
template <class _Tp, class _Alloc>
inline __list_imp<_Tp, _Alloc>::__list_imp(const allocator_type& __a)
: __size_(0), __node_alloc_(__node_allocator(__a)) {}
template <class _Tp, class _Alloc>
inline __list_imp<_Tp, _Alloc>::__list_imp(const __node_allocator& __a) : __size_(0), __node_alloc_(__a) {}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
inline __list_imp<_Tp, _Alloc>::__list_imp(__node_allocator&& __a) _NOEXCEPT
: __size_(0),
__node_alloc_(std::move(__a)) {}
#endif
template <class _Tp, class _Alloc>
__list_imp<_Tp, _Alloc>::~__list_imp() {
clear();
}
template <class _Tp, class _Alloc>
void __list_imp<_Tp, _Alloc>::clear() _NOEXCEPT {
if (!empty()) {
__base_pointer __f = __end_.__next_;
__base_pointer __l = __end_as_link();
__unlink_nodes(__f, __l->__prev_);
__sz() = 0;
while (__f != __l) {
__node_pointer __np = __f->__as_node();
__f = __f->__next_;
__delete_node(__np);
}
}
}
template <class _Tp, class _Alloc>
void __list_imp<_Tp, _Alloc>::swap(__list_imp& __c)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT
#else
_NOEXCEPT_(!__alloc_traits::propagate_on_container_swap::value || __is_nothrow_swappable_v<allocator_type>)
#endif
{
_LIBCPP_ASSERT_COMPATIBLE_ALLOCATOR(
__alloc_traits::propagate_on_container_swap::value || this->__node_alloc() == __c.__node_alloc(),
"list::swap: Either propagate_on_container_swap must be true"
" or the allocators must compare equal");
using std::swap;
std::__swap_allocator(__node_alloc(), __c.__node_alloc());
swap(__sz(), __c.__sz());
swap(__end_, __c.__end_);
if (__sz() == 0)
__end_.__next_ = __end_.__prev_ = __end_as_link();
else
__end_.__prev_->__next_ = __end_.__next_->__prev_ = __end_as_link();
if (__c.__sz() == 0)
__c.__end_.__next_ = __c.__end_.__prev_ = __c.__end_as_link();
else
__c.__end_.__prev_->__next_ = __c.__end_.__next_->__prev_ = __c.__end_as_link();
}
template <class _Tp, class _Alloc /*= allocator<_Tp>*/>
class _LIBCPP_TEMPLATE_VIS list : private __list_imp<_Tp, _Alloc> {
typedef __list_imp<_Tp, _Alloc> base;
typedef typename base::__node_type __node_type;
typedef typename base::__node_allocator __node_allocator;
typedef typename base::__node_pointer __node_pointer;
typedef typename base::__node_alloc_traits __node_alloc_traits;
typedef typename base::__node_base __node_base;
typedef typename base::__node_base_pointer __node_base_pointer;
typedef typename base::__base_pointer __base_pointer;
public:
typedef _Tp value_type;
typedef _Alloc allocator_type;
static_assert(__check_valid_allocator<allocator_type>::value);
static_assert(is_same<value_type, typename allocator_type::value_type>::value,
"Allocator::value_type must be same type as value_type");
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename base::pointer pointer;
typedef typename base::const_pointer const_pointer;
typedef typename base::size_type size_type;
typedef typename base::difference_type difference_type;
typedef typename base::iterator iterator;
typedef typename base::const_iterator const_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
#if _LIBCPP_STD_VER >= 20
typedef size_type __remove_return_type;
#else
typedef void __remove_return_type;
#endif
_LIBCPP_HIDE_FROM_ABI list() _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value) {}
_LIBCPP_HIDE_FROM_ABI explicit list(const allocator_type& __a) : base(__a) {}
_LIBCPP_HIDE_FROM_ABI explicit list(size_type __n);
#if _LIBCPP_STD_VER >= 14
_LIBCPP_HIDE_FROM_ABI explicit list(size_type __n, const allocator_type& __a);
#endif
_LIBCPP_HIDE_FROM_ABI list(size_type __n, const value_type& __x);
template <__enable_if_t<__is_allocator<_Alloc>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI list(size_type __n, const value_type& __x, const allocator_type& __a) : base(__a) {
for (; __n > 0; --__n)
push_back(__x);
}
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI list(_InpIter __f, _InpIter __l);
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI list(_InpIter __f, _InpIter __l, const allocator_type& __a);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI list(from_range_t, _Range&& __range, const allocator_type& __a = allocator_type()) : base(__a) {
prepend_range(std::forward<_Range>(__range));
}
#endif
_LIBCPP_HIDE_FROM_ABI list(const list& __c);
_LIBCPP_HIDE_FROM_ABI list(const list& __c, const __type_identity_t<allocator_type>& __a);
_LIBCPP_HIDE_FROM_ABI list& operator=(const list& __c);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI list(initializer_list<value_type> __il);
_LIBCPP_HIDE_FROM_ABI list(initializer_list<value_type> __il, const allocator_type& __a);
_LIBCPP_HIDE_FROM_ABI list(list&& __c) _NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value);
_LIBCPP_HIDE_FROM_ABI list(list&& __c, const __type_identity_t<allocator_type>& __a);
_LIBCPP_HIDE_FROM_ABI list& operator=(list&& __c)
_NOEXCEPT_(__node_alloc_traits::propagate_on_container_move_assignment::value&&
is_nothrow_move_assignable<__node_allocator>::value);
_LIBCPP_HIDE_FROM_ABI list& operator=(initializer_list<value_type> __il) {
assign(__il.begin(), __il.end());
return *this;
}
_LIBCPP_HIDE_FROM_ABI void assign(initializer_list<value_type> __il) { assign(__il.begin(), __il.end()); }
#endif // _LIBCPP_CXX03_LANG
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI void assign(_InpIter __f, _InpIter __l);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI void assign_range(_Range&& __range) {
__assign_with_sentinel(ranges::begin(__range), ranges::end(__range));
}
#endif
_LIBCPP_HIDE_FROM_ABI void assign(size_type __n, const value_type& __x);
_LIBCPP_HIDE_FROM_ABI allocator_type get_allocator() const _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI size_type size() const _NOEXCEPT { return base::__sz(); }
[[__nodiscard__]] _LIBCPP_HIDE_FROM_ABI bool empty() const _NOEXCEPT { return base::empty(); }
_LIBCPP_HIDE_FROM_ABI size_type max_size() const _NOEXCEPT {
return std::min<size_type>(base::__node_alloc_max_size(), numeric_limits<difference_type >::max());
}
_LIBCPP_HIDE_FROM_ABI iterator begin() _NOEXCEPT { return base::begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator begin() const _NOEXCEPT { return base::begin(); }
_LIBCPP_HIDE_FROM_ABI iterator end() _NOEXCEPT { return base::end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator end() const _NOEXCEPT { return base::end(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cbegin() const _NOEXCEPT { return base::begin(); }
_LIBCPP_HIDE_FROM_ABI const_iterator cend() const _NOEXCEPT { return base::end(); }
_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_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()); }
_LIBCPP_HIDE_FROM_ABI reference front() {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "list::front called on empty list");
return base::__end_.__next_->__as_node()->__get_value();
}
_LIBCPP_HIDE_FROM_ABI const_reference front() const {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "list::front called on empty list");
return base::__end_.__next_->__as_node()->__get_value();
}
_LIBCPP_HIDE_FROM_ABI reference back() {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "list::back called on empty list");
return base::__end_.__prev_->__as_node()->__get_value();
}
_LIBCPP_HIDE_FROM_ABI const_reference back() const {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "list::back called on empty list");
return base::__end_.__prev_->__as_node()->__get_value();
}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI void push_front(value_type&& __x);
_LIBCPP_HIDE_FROM_ABI void push_back(value_type&& __x);
# 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
template <class... _Args>
# if _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI reference emplace_front(_Args&&... __args);
# else
_LIBCPP_HIDE_FROM_ABI void emplace_front(_Args&&... __args);
# endif
template <class... _Args>
# if _LIBCPP_STD_VER >= 17
_LIBCPP_HIDE_FROM_ABI reference emplace_back(_Args&&... __args);
# else
_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 iterator insert(const_iterator __p, value_type&& __x);
_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 void push_front(const value_type& __x);
_LIBCPP_HIDE_FROM_ABI void push_back(const value_type& __x);
#ifndef _LIBCPP_CXX03_LANG
template <class _Arg>
_LIBCPP_HIDE_FROM_ABI void __emplace_back(_Arg&& __arg) {
emplace_back(std::forward<_Arg>(__arg));
}
#else
_LIBCPP_HIDE_FROM_ABI void __emplace_back(value_type const& __arg) { push_back(__arg); }
#endif
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, const value_type& __x);
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, size_type __n, const value_type& __x);
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> = 0>
_LIBCPP_HIDE_FROM_ABI iterator insert(const_iterator __p, _InpIter __f, _InpIter __l);
#if _LIBCPP_STD_VER >= 23
template <_ContainerCompatibleRange<_Tp> _Range>
_LIBCPP_HIDE_FROM_ABI iterator insert_range(const_iterator __position, _Range&& __range) {
return __insert_with_sentinel(__position, ranges::begin(__range), ranges::end(__range));
}
#endif
_LIBCPP_HIDE_FROM_ABI void swap(list& __c)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT
#else
_NOEXCEPT_(!__node_alloc_traits::propagate_on_container_swap::value || __is_nothrow_swappable_v<__node_allocator>)
#endif
{
base::swap(__c);
}
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT { base::clear(); }
_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 resize(size_type __n);
_LIBCPP_HIDE_FROM_ABI void resize(size_type __n, const value_type& __x);
_LIBCPP_HIDE_FROM_ABI void splice(const_iterator __p, list& __c);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI void splice(const_iterator __p, list&& __c) { splice(__p, __c); }
_LIBCPP_HIDE_FROM_ABI void splice(const_iterator __p, list&& __c, const_iterator __i) { splice(__p, __c, __i); }
_LIBCPP_HIDE_FROM_ABI void splice(const_iterator __p, list&& __c, const_iterator __f, const_iterator __l) {
splice(__p, __c, __f, __l);
}
#endif
_LIBCPP_HIDE_FROM_ABI void splice(const_iterator __p, list& __c, const_iterator __i);
_LIBCPP_HIDE_FROM_ABI void splice(const_iterator __p, list& __c, const_iterator __f, const_iterator __l);
_LIBCPP_HIDE_FROM_ABI __remove_return_type remove(const value_type& __x);
template <class _Pred>
_LIBCPP_HIDE_FROM_ABI __remove_return_type remove_if(_Pred __pred);
_LIBCPP_HIDE_FROM_ABI __remove_return_type unique() { return unique(__equal_to()); }
template <class _BinaryPred>
_LIBCPP_HIDE_FROM_ABI __remove_return_type unique(_BinaryPred __binary_pred);
_LIBCPP_HIDE_FROM_ABI void merge(list& __c);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_HIDE_FROM_ABI void merge(list&& __c) { merge(__c); }
template <class _Comp>
_LIBCPP_HIDE_FROM_ABI void merge(list&& __c, _Comp __comp) {
merge(__c, __comp);
}
#endif
template <class _Comp>
_LIBCPP_HIDE_FROM_ABI void merge(list& __c, _Comp __comp);
_LIBCPP_HIDE_FROM_ABI void sort();
template <class _Comp>
_LIBCPP_HIDE_FROM_ABI void sort(_Comp __comp);
_LIBCPP_HIDE_FROM_ABI void reverse() _NOEXCEPT;
_LIBCPP_HIDE_FROM_ABI bool __invariants() const;
private:
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI void __assign_with_sentinel(_Iterator __f, _Sentinel __l);
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI iterator __insert_with_sentinel(const_iterator __p, _Iterator __f, _Sentinel __l);
_LIBCPP_HIDE_FROM_ABI static void __link_nodes(__base_pointer __p, __base_pointer __f, __base_pointer __l);
_LIBCPP_HIDE_FROM_ABI void __link_nodes_at_front(__base_pointer __f, __base_pointer __l);
_LIBCPP_HIDE_FROM_ABI void __link_nodes_at_back(__base_pointer __f, __base_pointer __l);
_LIBCPP_HIDE_FROM_ABI iterator __iterator(size_type __n);
// TODO: Make this _LIBCPP_HIDE_FROM_ABI
template <class _Comp>
_LIBCPP_HIDDEN static iterator __sort(iterator __f1, iterator __e2, size_type __n, _Comp& __comp);
_LIBCPP_HIDE_FROM_ABI void __move_assign(list& __c, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value);
_LIBCPP_HIDE_FROM_ABI void __move_assign(list& __c, false_type);
};
#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> >
list(_InputIterator, _InputIterator) -> list<__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> >
list(_InputIterator, _InputIterator, _Alloc) -> list<__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> >
list(from_range_t, _Range&&, _Alloc = _Alloc()) -> list<ranges::range_value_t<_Range>, _Alloc>;
#endif
// Link in nodes [__f, __l] just prior to __p
template <class _Tp, class _Alloc>
inline void list<_Tp, _Alloc>::__link_nodes(__base_pointer __p, __base_pointer __f, __base_pointer __l) {
__p->__prev_->__next_ = __f;
__f->__prev_ = __p->__prev_;
__p->__prev_ = __l;
__l->__next_ = __p;
}
// Link in nodes [__f, __l] at the front of the list
template <class _Tp, class _Alloc>
inline void list<_Tp, _Alloc>::__link_nodes_at_front(__base_pointer __f, __base_pointer __l) {
__f->__prev_ = base::__end_as_link();
__l->__next_ = base::__end_.__next_;
__l->__next_->__prev_ = __l;
base::__end_.__next_ = __f;
}
// Link in nodes [__f, __l] at the back of the list
template <class _Tp, class _Alloc>
inline void list<_Tp, _Alloc>::__link_nodes_at_back(__base_pointer __f, __base_pointer __l) {
__l->__next_ = base::__end_as_link();
__f->__prev_ = base::__end_.__prev_;
__f->__prev_->__next_ = __f;
base::__end_.__prev_ = __l;
}
template <class _Tp, class _Alloc>
inline typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::__iterator(size_type __n) {
return __n <= base::__sz() / 2 ? std::next(begin(), __n) : std::prev(end(), base::__sz() - __n);
}
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n) {
for (; __n > 0; --__n)
#ifndef _LIBCPP_CXX03_LANG
emplace_back();
#else
push_back(value_type());
#endif
}
#if _LIBCPP_STD_VER >= 14
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const allocator_type& __a) : base(__a) {
for (; __n > 0; --__n)
emplace_back();
}
#endif
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(size_type __n, const value_type& __x) {
for (; __n > 0; --__n)
push_back(__x);
}
template <class _Tp, class _Alloc>
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> >
list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l) {
for (; __f != __l; ++__f)
__emplace_back(*__f);
}
template <class _Tp, class _Alloc>
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> >
list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l, const allocator_type& __a) : base(__a) {
for (; __f != __l; ++__f)
__emplace_back(*__f);
}
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(const list& __c)
: base(__node_alloc_traits::select_on_container_copy_construction(__c.__node_alloc())) {
for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
push_back(*__i);
}
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(const list& __c, const __type_identity_t<allocator_type>& __a) : base(__a) {
for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
push_back(*__i);
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(initializer_list<value_type> __il, const allocator_type& __a) : base(__a) {
for (typename initializer_list<value_type>::const_iterator __i = __il.begin(), __e = __il.end(); __i != __e; ++__i)
push_back(*__i);
}
template <class _Tp, class _Alloc>
list<_Tp, _Alloc>::list(initializer_list<value_type> __il) {
for (typename initializer_list<value_type>::const_iterator __i = __il.begin(), __e = __il.end(); __i != __e; ++__i)
push_back(*__i);
}
template <class _Tp, class _Alloc>
inline list<_Tp, _Alloc>::list(list&& __c) noexcept(is_nothrow_move_constructible<__node_allocator>::value)
: base(std::move(__c.__node_alloc())) {
splice(end(), __c);
}
template <class _Tp, class _Alloc>
inline list<_Tp, _Alloc>::list(list&& __c, const __type_identity_t<allocator_type>& __a) : base(__a) {
if (__a == __c.get_allocator())
splice(end(), __c);
else {
typedef move_iterator<iterator> _Ip;
assign(_Ip(__c.begin()), _Ip(__c.end()));
}
}
template <class _Tp, class _Alloc>
inline list<_Tp, _Alloc>& list<_Tp, _Alloc>::operator=(list&& __c) noexcept(
__node_alloc_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<__node_allocator>::value) {
__move_assign(__c, integral_constant<bool, __node_alloc_traits::propagate_on_container_move_assignment::value>());
return *this;
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::__move_assign(list& __c, false_type) {
if (base::__node_alloc() != __c.__node_alloc()) {
typedef move_iterator<iterator> _Ip;
assign(_Ip(__c.begin()), _Ip(__c.end()));
} else
__move_assign(__c, true_type());
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::__move_assign(list& __c,
true_type) noexcept(is_nothrow_move_assignable<__node_allocator>::value) {
clear();
base::__move_assign_alloc(__c);
splice(end(), __c);
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
inline list<_Tp, _Alloc>& list<_Tp, _Alloc>::operator=(const list& __c) {
if (this != std::addressof(__c)) {
base::__copy_assign_alloc(__c);
assign(__c.begin(), __c.end());
}
return *this;
}
template <class _Tp, class _Alloc>
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> >
void list<_Tp, _Alloc>::assign(_InpIter __f, _InpIter __l) {
__assign_with_sentinel(__f, __l);
}
template <class _Tp, class _Alloc>
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI void list<_Tp, _Alloc>::__assign_with_sentinel(_Iterator __f, _Sentinel __l) {
iterator __i = begin();
iterator __e = end();
for (; __f != __l && __i != __e; ++__f, (void)++__i)
*__i = *__f;
if (__i == __e)
__insert_with_sentinel(__e, std::move(__f), std::move(__l));
else
erase(__i, __e);
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::assign(size_type __n, const value_type& __x) {
iterator __i = begin();
iterator __e = end();
for (; __n > 0 && __i != __e; --__n, (void)++__i)
*__i = __x;
if (__i == __e)
insert(__e, __n, __x);
else
erase(__i, __e);
}
template <class _Tp, class _Alloc>
inline _Alloc list<_Tp, _Alloc>::get_allocator() const _NOEXCEPT {
return allocator_type(base::__node_alloc());
}
template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::insert(const_iterator __p, const value_type& __x) {
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, __x);
__link_nodes(__p.__ptr_, __node->__as_link(), __node->__as_link());
++base::__sz();
return iterator(__node->__as_link());
}
template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::insert(const_iterator __p, size_type __n, const value_type& __x) {
iterator __r(__p.__ptr_);
if (__n > 0) {
size_type __ds = 0;
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, __x);
++__ds;
__r = iterator(__node->__as_link());
iterator __e = __r;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try {
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (--__n; __n != 0; --__n, (void)++__e, ++__ds) {
__e.__ptr_->__next_ = this->__create_node(/* prev = */ __e.__ptr_, /* next = */ nullptr, __x)->__as_link();
}
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
} catch (...) {
while (true) {
__base_pointer __prev = __e.__ptr_->__prev_;
__node_pointer __current = __e.__ptr_->__as_node();
this->__delete_node(__current);
if (__prev == 0)
break;
__e = iterator(__prev);
}
throw;
}
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
__link_nodes(__p.__ptr_, __r.__ptr_, __e.__ptr_);
base::__sz() += __ds;
}
return __r;
}
template <class _Tp, class _Alloc>
template <class _InpIter, __enable_if_t<__has_input_iterator_category<_InpIter>::value, int> >
typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::insert(const_iterator __p, _InpIter __f, _InpIter __l) {
return __insert_with_sentinel(__p, __f, __l);
}
template <class _Tp, class _Alloc>
template <class _Iterator, class _Sentinel>
_LIBCPP_HIDE_FROM_ABI typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::__insert_with_sentinel(const_iterator __p, _Iterator __f, _Sentinel __l) {
iterator __r(__p.__ptr_);
if (__f != __l) {
size_type __ds = 0;
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, *__f);
++__ds;
__r = iterator(__node->__as_link());
iterator __e = __r;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try {
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (++__f; __f != __l; ++__f, (void)++__e, ++__ds) {
__e.__ptr_->__next_ = this->__create_node(/* prev = */ __e.__ptr_, /* next = */ nullptr, *__f)->__as_link();
}
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
} catch (...) {
while (true) {
__base_pointer __prev = __e.__ptr_->__prev_;
__node_pointer __current = __e.__ptr_->__as_node();
this->__delete_node(__current);
if (__prev == 0)
break;
__e = iterator(__prev);
}
throw;
}
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
__link_nodes(__p.__ptr_, __r.__ptr_, __e.__ptr_);
base::__sz() += __ds;
}
return __r;
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::push_front(const value_type& __x) {
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, __x);
__base_pointer __nl = __node->__as_link();
__link_nodes_at_front(__nl, __nl);
++base::__sz();
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::push_back(const value_type& __x) {
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, __x);
__base_pointer __nl = __node->__as_link();
__link_nodes_at_back(__nl, __nl);
++base::__sz();
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::push_front(value_type&& __x) {
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, std::move(__x));
__base_pointer __nl = __node->__as_link();
__link_nodes_at_front(__nl, __nl);
++base::__sz();
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::push_back(value_type&& __x) {
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, std::move(__x));
__base_pointer __nl = __node->__as_link();
__link_nodes_at_back(__nl, __nl);
++base::__sz();
}
template <class _Tp, class _Alloc>
template <class... _Args>
# if _LIBCPP_STD_VER >= 17
typename list<_Tp, _Alloc>::reference
# else
void
# endif
list<_Tp, _Alloc>::emplace_front(_Args&&... __args) {
__node_pointer __node =
this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, std::forward<_Args>(__args)...);
__base_pointer __nl = __node->__as_link();
__link_nodes_at_front(__nl, __nl);
++base::__sz();
# if _LIBCPP_STD_VER >= 17
return __node->__get_value();
# endif
}
template <class _Tp, class _Alloc>
template <class... _Args>
# if _LIBCPP_STD_VER >= 17
typename list<_Tp, _Alloc>::reference
# else
void
# endif
list<_Tp, _Alloc>::emplace_back(_Args&&... __args) {
__node_pointer __node =
this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, std::forward<_Args>(__args)...);
__base_pointer __nl = __node->__as_link();
__link_nodes_at_back(__nl, __nl);
++base::__sz();
# if _LIBCPP_STD_VER >= 17
return __node->__get_value();
# endif
}
template <class _Tp, class _Alloc>
template <class... _Args>
typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::emplace(const_iterator __p, _Args&&... __args) {
__node_pointer __node =
this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, std::forward<_Args>(__args)...);
__base_pointer __nl = __node->__as_link();
__link_nodes(__p.__ptr_, __nl, __nl);
++base::__sz();
return iterator(__nl);
}
template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::insert(const_iterator __p, value_type&& __x) {
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, std::move(__x));
__base_pointer __nl = __node->__as_link();
__link_nodes(__p.__ptr_, __nl, __nl);
++base::__sz();
return iterator(__nl);
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::pop_front() {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "list::pop_front() called with empty list");
__base_pointer __n = base::__end_.__next_;
base::__unlink_nodes(__n, __n);
--base::__sz();
this->__delete_node(__n->__as_node());
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::pop_back() {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(!empty(), "list::pop_back() called on an empty list");
__base_pointer __n = base::__end_.__prev_;
base::__unlink_nodes(__n, __n);
--base::__sz();
this->__delete_node(__n->__as_node());
}
template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::erase(const_iterator __p) {
_LIBCPP_ASSERT_VALID_ELEMENT_ACCESS(__p != end(), "list::erase(iterator) called with a non-dereferenceable iterator");
__base_pointer __n = __p.__ptr_;
__base_pointer __r = __n->__next_;
base::__unlink_nodes(__n, __n);
--base::__sz();
this->__delete_node(__n->__as_node());
return iterator(__r);
}
template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::iterator list<_Tp, _Alloc>::erase(const_iterator __f, const_iterator __l) {
if (__f != __l) {
base::__unlink_nodes(__f.__ptr_, __l.__ptr_->__prev_);
while (__f != __l) {
__base_pointer __n = __f.__ptr_;
++__f;
--base::__sz();
this->__delete_node(__n->__as_node());
}
}
return iterator(__l.__ptr_);
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::resize(size_type __n) {
if (__n < base::__sz())
erase(__iterator(__n), end());
else if (__n > base::__sz()) {
__n -= base::__sz();
size_type __ds = 0;
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr);
++__ds;
iterator __r = iterator(__node->__as_link());
iterator __e = __r;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try {
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (--__n; __n != 0; --__n, (void)++__e, ++__ds) {
__e.__ptr_->__next_ = this->__create_node(/* prev = */ __e.__ptr_, /* next = */ nullptr)->__as_link();
}
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
} catch (...) {
while (true) {
__base_pointer __prev = __e.__ptr_->__prev_;
__node_pointer __current = __e.__ptr_->__as_node();
this->__delete_node(__current);
if (__prev == 0)
break;
__e = iterator(__prev);
}
throw;
}
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
__link_nodes_at_back(__r.__ptr_, __e.__ptr_);
base::__sz() += __ds;
}
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::resize(size_type __n, const value_type& __x) {
if (__n < base::__sz())
erase(__iterator(__n), end());
else if (__n > base::__sz()) {
__n -= base::__sz();
size_type __ds = 0;
__node_pointer __node = this->__create_node(/* prev = */ nullptr, /* next = */ nullptr, __x);
++__ds;
__base_pointer __nl = __node->__as_link();
iterator __r = iterator(__nl);
iterator __e = __r;
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
try {
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
for (--__n; __n != 0; --__n, (void)++__e, ++__ds) {
__e.__ptr_->__next_ = this->__create_node(/* prev = */ __e.__ptr_, /* next = */ nullptr, __x)->__as_link();
}
#ifndef _LIBCPP_HAS_NO_EXCEPTIONS
} catch (...) {
while (true) {
__base_pointer __prev = __e.__ptr_->__prev_;
__node_pointer __current = __e.__ptr_->__as_node();
this->__delete_node(__current);
if (__prev == 0)
break;
__e = iterator(__prev);
}
throw;
}
#endif // _LIBCPP_HAS_NO_EXCEPTIONS
__link_nodes(base::__end_as_link(), __r.__ptr_, __e.__ptr_);
base::__sz() += __ds;
}
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::splice(const_iterator __p, list& __c) {
_LIBCPP_ASSERT_VALID_INPUT_RANGE(
this != std::addressof(__c), "list::splice(iterator, list) called with this == &list");
if (!__c.empty()) {
__base_pointer __f = __c.__end_.__next_;
__base_pointer __l = __c.__end_.__prev_;
base::__unlink_nodes(__f, __l);
__link_nodes(__p.__ptr_, __f, __l);
base::__sz() += __c.__sz();
__c.__sz() = 0;
}
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::splice(const_iterator __p, list& __c, const_iterator __i) {
if (__p.__ptr_ != __i.__ptr_ && __p.__ptr_ != __i.__ptr_->__next_) {
__base_pointer __f = __i.__ptr_;
base::__unlink_nodes(__f, __f);
__link_nodes(__p.__ptr_, __f, __f);
--__c.__sz();
++base::__sz();
}
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::splice(const_iterator __p, list& __c, const_iterator __f, const_iterator __l) {
if (__f != __l) {
__base_pointer __first = __f.__ptr_;
--__l;
__base_pointer __last = __l.__ptr_;
if (this != std::addressof(__c)) {
size_type __s = std::distance(__f, __l) + 1;
__c.__sz() -= __s;
base::__sz() += __s;
}
base::__unlink_nodes(__first, __last);
__link_nodes(__p.__ptr_, __first, __last);
}
}
template <class _Tp, class _Alloc>
typename list<_Tp, _Alloc>::__remove_return_type list<_Tp, _Alloc>::remove(const value_type& __x) {
list<_Tp, _Alloc> __deleted_nodes(get_allocator()); // collect the nodes we're removing
for (const_iterator __i = begin(), __e = end(); __i != __e;) {
if (*__i == __x) {
const_iterator __j = std::next(__i);
for (; __j != __e && *__j == __x; ++__j)
;
__deleted_nodes.splice(__deleted_nodes.end(), *this, __i, __j);
__i = __j;
if (__i != __e)
++__i;
} else
++__i;
}
return (__remove_return_type)__deleted_nodes.size();
}
template <class _Tp, class _Alloc>
template <class _Pred>
typename list<_Tp, _Alloc>::__remove_return_type list<_Tp, _Alloc>::remove_if(_Pred __pred) {
list<_Tp, _Alloc> __deleted_nodes(get_allocator()); // collect the nodes we're removing
for (iterator __i = begin(), __e = end(); __i != __e;) {
if (__pred(*__i)) {
iterator __j = std::next(__i);
for (; __j != __e && __pred(*__j); ++__j)
;
__deleted_nodes.splice(__deleted_nodes.end(), *this, __i, __j);
__i = __j;
if (__i != __e)
++__i;
} else
++__i;
}
return (__remove_return_type)__deleted_nodes.size();
}
template <class _Tp, class _Alloc>
template <class _BinaryPred>
typename list<_Tp, _Alloc>::__remove_return_type list<_Tp, _Alloc>::unique(_BinaryPred __binary_pred) {
list<_Tp, _Alloc> __deleted_nodes(get_allocator()); // collect the nodes we're removing
for (iterator __i = begin(), __e = end(); __i != __e;) {
iterator __j = std::next(__i);
for (; __j != __e && __binary_pred(*__i, *__j); ++__j)
;
if (++__i != __j) {
__deleted_nodes.splice(__deleted_nodes.end(), *this, __i, __j);
__i = __j;
}
}
return (__remove_return_type)__deleted_nodes.size();
}
template <class _Tp, class _Alloc>
inline void list<_Tp, _Alloc>::merge(list& __c) {
merge(__c, __less<>());
}
template <class _Tp, class _Alloc>
template <class _Comp>
void list<_Tp, _Alloc>::merge(list& __c, _Comp __comp) {
if (this != std::addressof(__c)) {
iterator __f1 = begin();
iterator __e1 = end();
iterator __f2 = __c.begin();
iterator __e2 = __c.end();
while (__f1 != __e1 && __f2 != __e2) {
if (__comp(*__f2, *__f1)) {
size_type __ds = 1;
iterator __m2 = std::next(__f2);
for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2, (void)++__ds)
;
base::__sz() += __ds;
__c.__sz() -= __ds;
__base_pointer __f = __f2.__ptr_;
__base_pointer __l = __m2.__ptr_->__prev_;
__f2 = __m2;
base::__unlink_nodes(__f, __l);
__m2 = std::next(__f1);
__link_nodes(__f1.__ptr_, __f, __l);
__f1 = __m2;
} else
++__f1;
}
splice(__e1, __c);
}
}
template <class _Tp, class _Alloc>
inline void list<_Tp, _Alloc>::sort() {
sort(__less<>());
}
template <class _Tp, class _Alloc>
template <class _Comp>
inline void list<_Tp, _Alloc>::sort(_Comp __comp) {
__sort(begin(), end(), base::__sz(), __comp);
}
template <class _Tp, class _Alloc>
template <class _Comp>
typename list<_Tp, _Alloc>::iterator
list<_Tp, _Alloc>::__sort(iterator __f1, iterator __e2, size_type __n, _Comp& __comp) {
switch (__n) {
case 0:
case 1:
return __f1;
case 2:
if (__comp(*--__e2, *__f1)) {
__base_pointer __f = __e2.__ptr_;
base::__unlink_nodes(__f, __f);
__link_nodes(__f1.__ptr_, __f, __f);
return __e2;
}
return __f1;
}
size_type __n2 = __n / 2;
iterator __e1 = std::next(__f1, __n2);
iterator __r = __f1 = __sort(__f1, __e1, __n2, __comp);
iterator __f2 = __e1 = __sort(__e1, __e2, __n - __n2, __comp);
if (__comp(*__f2, *__f1)) {
iterator __m2 = std::next(__f2);
for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2)
;
__base_pointer __f = __f2.__ptr_;
__base_pointer __l = __m2.__ptr_->__prev_;
__r = __f2;
__e1 = __f2 = __m2;
base::__unlink_nodes(__f, __l);
__m2 = std::next(__f1);
__link_nodes(__f1.__ptr_, __f, __l);
__f1 = __m2;
} else
++__f1;
while (__f1 != __e1 && __f2 != __e2) {
if (__comp(*__f2, *__f1)) {
iterator __m2 = std::next(__f2);
for (; __m2 != __e2 && __comp(*__m2, *__f1); ++__m2)
;
__base_pointer __f = __f2.__ptr_;
__base_pointer __l = __m2.__ptr_->__prev_;
if (__e1 == __f2)
__e1 = __m2;
__f2 = __m2;
base::__unlink_nodes(__f, __l);
__m2 = std::next(__f1);
__link_nodes(__f1.__ptr_, __f, __l);
__f1 = __m2;
} else
++__f1;
}
return __r;
}
template <class _Tp, class _Alloc>
void list<_Tp, _Alloc>::reverse() _NOEXCEPT {
if (base::__sz() > 1) {
iterator __e = end();
for (iterator __i = begin(); __i.__ptr_ != __e.__ptr_;) {
std::swap(__i.__ptr_->__prev_, __i.__ptr_->__next_);
__i.__ptr_ = __i.__ptr_->__prev_;
}
std::swap(__e.__ptr_->__prev_, __e.__ptr_->__next_);
}
}
template <class _Tp, class _Alloc>
bool list<_Tp, _Alloc>::__invariants() const {
return size() == std::distance(begin(), end());
}
template <class _Tp, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator==(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) {
return __x.size() == __y.size() && std::equal(__x.begin(), __x.end(), __y.begin());
}
#if _LIBCPP_STD_VER <= 17
template <class _Tp, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator<(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) {
return std::lexicographical_compare(__x.begin(), __x.end(), __y.begin(), __y.end());
}
template <class _Tp, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) {
return !(__x == __y);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator>(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) {
return __y < __x;
}
template <class _Tp, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator>=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __y) {
return !(__x < __y);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_HIDE_FROM_ABI bool operator<=(const list<_Tp, _Alloc>& __x, const list<_Tp, _Alloc>& __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 list<_Tp, _Allocator>& __x, const list<_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 _Alloc>
inline _LIBCPP_HIDE_FROM_ABI void swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y))) {
__x.swap(__y);
}
#if _LIBCPP_STD_VER >= 20
template <class _Tp, class _Allocator, class _Predicate>
inline _LIBCPP_HIDE_FROM_ABI typename list<_Tp, _Allocator>::size_type
erase_if(list<_Tp, _Allocator>& __c, _Predicate __pred) {
return __c.remove_if(__pred);
}
template <class _Tp, class _Allocator, class _Up>
inline _LIBCPP_HIDE_FROM_ABI typename list<_Tp, _Allocator>::size_type
erase(list<_Tp, _Allocator>& __c, const _Up& __v) {
return std::erase_if(__c, [&](auto& __elem) { return __elem == __v; });
}
template <>
inline constexpr bool __format::__enable_insertable<std::list<char>> = true;
# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
template <>
inline constexpr bool __format::__enable_insertable<std::list<wchar_t>> = true;
# endif
#endif // _LIBCPP_STD_VER >= 20
_LIBCPP_END_NAMESPACE_STD
#if _LIBCPP_STD_VER >= 17
_LIBCPP_BEGIN_NAMESPACE_STD
namespace pmr {
template <class _ValueT>
using list _LIBCPP_AVAILABILITY_PMR = std::list<_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 <cstdint>
# include <cstdlib>
# include <functional>
# include <iosfwd>
# include <iterator>
# include <stdexcept>
# include <type_traits>
# include <typeinfo>
#endif
#endif // _LIBCPP_LIST
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