// -*- C++ -*-
//===----------------------- forward_list ---------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP_FORWARD_LIST
#define _LIBCPP_FORWARD_LIST
/*
forward_list synopsis
namespace std
{
template <class T, class Allocator = allocator<T>>
class forward_list
{
public:
typedef T value_type;
typedef Allocator allocator_type;
typedef value_type& reference;
typedef const value_type& const_reference;
typedef typename allocator_traits<allocator_type>::pointer pointer;
typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
typedef typename allocator_traits<allocator_type>::size_type size_type;
typedef typename allocator_traits<allocator_type>::difference_type difference_type;
typedef <details> iterator;
typedef <details> const_iterator;
forward_list()
noexcept(is_nothrow_default_constructible<allocator_type>::value);
explicit forward_list(const allocator_type& a);
explicit forward_list(size_type n);
explicit forward_list(size_type n, const allocator_type& a); // C++14
forward_list(size_type n, const value_type& v);
forward_list(size_type n, const value_type& v, const allocator_type& a);
template <class InputIterator>
forward_list(InputIterator first, InputIterator last);
template <class InputIterator>
forward_list(InputIterator first, InputIterator last, const allocator_type& a);
forward_list(const forward_list& x);
forward_list(const forward_list& x, const allocator_type& a);
forward_list(forward_list&& x)
noexcept(is_nothrow_move_constructible<allocator_type>::value);
forward_list(forward_list&& x, const allocator_type& a);
forward_list(initializer_list<value_type> il);
forward_list(initializer_list<value_type> il, const allocator_type& a);
~forward_list();
forward_list& operator=(const forward_list& x);
forward_list& operator=(forward_list&& x)
noexcept(
allocator_type::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value);
forward_list& operator=(initializer_list<value_type> il);
template <class InputIterator>
void assign(InputIterator first, InputIterator last);
void assign(size_type n, const value_type& v);
void assign(initializer_list<value_type> il);
allocator_type get_allocator() const noexcept;
iterator begin() noexcept;
const_iterator begin() const noexcept;
iterator end() noexcept;
const_iterator end() const noexcept;
const_iterator cbegin() const noexcept;
const_iterator cend() const noexcept;
iterator before_begin() noexcept;
const_iterator before_begin() const noexcept;
const_iterator cbefore_begin() const noexcept;
bool empty() const noexcept;
size_type max_size() const noexcept;
reference front();
const_reference front() const;
template <class... Args> reference emplace_front(Args&&... args); // reference in C++17
void push_front(const value_type& v);
void push_front(value_type&& v);
void pop_front();
template <class... Args>
iterator emplace_after(const_iterator p, Args&&... args);
iterator insert_after(const_iterator p, const value_type& v);
iterator insert_after(const_iterator p, value_type&& v);
iterator insert_after(const_iterator p, size_type n, const value_type& v);
template <class InputIterator>
iterator insert_after(const_iterator p,
InputIterator first, InputIterator last);
iterator insert_after(const_iterator p, initializer_list<value_type> il);
iterator erase_after(const_iterator p);
iterator erase_after(const_iterator first, const_iterator last);
void swap(forward_list& x)
noexcept(allocator_traits<allocator_type>::is_always_equal::value); // C++17
void resize(size_type n);
void resize(size_type n, const value_type& v);
void clear() noexcept;
void splice_after(const_iterator p, forward_list& x);
void splice_after(const_iterator p, forward_list&& x);
void splice_after(const_iterator p, forward_list& x, const_iterator i);
void splice_after(const_iterator p, forward_list&& x, const_iterator i);
void splice_after(const_iterator p, forward_list& x,
const_iterator first, const_iterator last);
void splice_after(const_iterator p, forward_list&& x,
const_iterator first, const_iterator last);
void remove(const value_type& v);
template <class Predicate> void remove_if(Predicate pred);
void unique();
template <class BinaryPredicate> void unique(BinaryPredicate binary_pred);
void merge(forward_list& x);
void merge(forward_list&& x);
template <class Compare> void merge(forward_list& x, Compare comp);
template <class Compare> void merge(forward_list&& x, Compare comp);
void sort();
template <class Compare> void sort(Compare comp);
void reverse() noexcept;
};
template <class T, class Allocator>
bool operator==(const forward_list<T, Allocator>& x,
const forward_list<T, Allocator>& y);
template <class T, class Allocator>
bool operator< (const forward_list<T, Allocator>& x,
const forward_list<T, Allocator>& y);
template <class T, class Allocator>
bool operator!=(const forward_list<T, Allocator>& x,
const forward_list<T, Allocator>& y);
template <class T, class Allocator>
bool operator> (const forward_list<T, Allocator>& x,
const forward_list<T, Allocator>& y);
template <class T, class Allocator>
bool operator>=(const forward_list<T, Allocator>& x,
const forward_list<T, Allocator>& y);
template <class T, class Allocator>
bool operator<=(const forward_list<T, Allocator>& x,
const forward_list<T, Allocator>& y);
template <class T, class Allocator>
void swap(forward_list<T, Allocator>& x, forward_list<T, Allocator>& y)
noexcept(noexcept(x.swap(y)));
} // std
*/
#include <__config>
#include <initializer_list>
#include <memory>
#include <limits>
#include <iterator>
#include <algorithm>
#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 __forward_list_node;
template <class _NodePtr> struct __forward_begin_node;
template <class>
struct __forward_list_node_value_type;
template <class _Tp, class _VoidPtr>
struct __forward_list_node_value_type<__forward_list_node<_Tp, _VoidPtr> > {
typedef _Tp type;
};
template <class _NodePtr>
struct __forward_node_traits {
typedef typename remove_cv<
typename pointer_traits<_NodePtr>::element_type>::type __node;
typedef typename __forward_list_node_value_type<__node>::type __node_value_type;
typedef _NodePtr __node_pointer;
typedef __forward_begin_node<_NodePtr> __begin_node;
typedef typename __rebind_pointer<_NodePtr, __begin_node>::type
__begin_node_pointer;
typedef typename __rebind_pointer<_NodePtr, void>::type __void_pointer;
#if defined(_LIBCPP_ABI_FORWARD_LIST_REMOVE_NODE_POINTER_UB)
typedef __begin_node_pointer __iter_node_pointer;
#else
typedef typename conditional<
is_pointer<__void_pointer>::value,
__begin_node_pointer,
__node_pointer
>::type __iter_node_pointer;
#endif
typedef typename conditional<
is_same<__iter_node_pointer, __node_pointer>::value,
__begin_node_pointer,
__node_pointer
>::type __non_iter_node_pointer;
_LIBCPP_INLINE_VISIBILITY
static __iter_node_pointer __as_iter_node(__iter_node_pointer __p) {
return __p;
}
_LIBCPP_INLINE_VISIBILITY
static __iter_node_pointer __as_iter_node(__non_iter_node_pointer __p) {
return static_cast<__iter_node_pointer>(static_cast<__void_pointer>(__p));
}
};
template <class _NodePtr>
struct __forward_begin_node
{
typedef _NodePtr pointer;
typedef typename __rebind_pointer<_NodePtr, __forward_begin_node>::type __begin_node_pointer;
pointer __next_;
_LIBCPP_INLINE_VISIBILITY __forward_begin_node() : __next_(nullptr) {}
_LIBCPP_INLINE_VISIBILITY
__begin_node_pointer __next_as_begin() const {
return static_cast<__begin_node_pointer>(__next_);
}
};
template <class _Tp, class _VoidPtr>
struct _LIBCPP_HIDDEN __begin_node_of
{
typedef __forward_begin_node<
typename __rebind_pointer<_VoidPtr, __forward_list_node<_Tp, _VoidPtr> >::type
> type;
};
template <class _Tp, class _VoidPtr>
struct __forward_list_node
: public __begin_node_of<_Tp, _VoidPtr>::type
{
typedef _Tp value_type;
value_type __value_;
};
template <class _Tp, class _Alloc = allocator<_Tp> > class _LIBCPP_TEMPLATE_VIS forward_list;
template<class _NodeConstPtr> class _LIBCPP_TEMPLATE_VIS __forward_list_const_iterator;
template <class _NodePtr>
class _LIBCPP_TEMPLATE_VIS __forward_list_iterator
{
typedef __forward_node_traits<_NodePtr> __traits;
typedef typename __traits::__node_pointer __node_pointer;
typedef typename __traits::__begin_node_pointer __begin_node_pointer;
typedef typename __traits::__iter_node_pointer __iter_node_pointer;
typedef typename __traits::__void_pointer __void_pointer;
__iter_node_pointer __ptr_;
_LIBCPP_INLINE_VISIBILITY
__begin_node_pointer __get_begin() const {
return static_cast<__begin_node_pointer>(
static_cast<__void_pointer>(__ptr_));
}
_LIBCPP_INLINE_VISIBILITY
__node_pointer __get_unsafe_node_pointer() const {
return static_cast<__node_pointer>(
static_cast<__void_pointer>(__ptr_));
}
_LIBCPP_INLINE_VISIBILITY
explicit __forward_list_iterator(nullptr_t) _NOEXCEPT : __ptr_(nullptr) {}
_LIBCPP_INLINE_VISIBILITY
explicit __forward_list_iterator(__begin_node_pointer __p) _NOEXCEPT
: __ptr_(__traits::__as_iter_node(__p)) {}
_LIBCPP_INLINE_VISIBILITY
explicit __forward_list_iterator(__node_pointer __p) _NOEXCEPT
: __ptr_(__traits::__as_iter_node(__p)) {}
template<class, class> friend class _LIBCPP_TEMPLATE_VIS forward_list;
template<class> friend class _LIBCPP_TEMPLATE_VIS __forward_list_const_iterator;
public:
typedef forward_iterator_tag iterator_category;
typedef typename __traits::__node_value_type value_type;
typedef value_type& reference;
typedef typename pointer_traits<__node_pointer>::difference_type
difference_type;
typedef typename __rebind_pointer<__node_pointer, value_type>::type pointer;
_LIBCPP_INLINE_VISIBILITY
__forward_list_iterator() _NOEXCEPT : __ptr_(nullptr) {}
_LIBCPP_INLINE_VISIBILITY
reference operator*() const {return __get_unsafe_node_pointer()->__value_;}
_LIBCPP_INLINE_VISIBILITY
pointer operator->() const {
return pointer_traits<pointer>::pointer_to(__get_unsafe_node_pointer()->__value_);
}
_LIBCPP_INLINE_VISIBILITY
__forward_list_iterator& operator++()
{
__ptr_ = __traits::__as_iter_node(__ptr_->__next_);
return *this;
}
_LIBCPP_INLINE_VISIBILITY
__forward_list_iterator operator++(int)
{
__forward_list_iterator __t(*this);
++(*this);
return __t;
}
friend _LIBCPP_INLINE_VISIBILITY
bool operator==(const __forward_list_iterator& __x,
const __forward_list_iterator& __y)
{return __x.__ptr_ == __y.__ptr_;}
friend _LIBCPP_INLINE_VISIBILITY
bool operator!=(const __forward_list_iterator& __x,
const __forward_list_iterator& __y)
{return !(__x == __y);}
};
template <class _NodeConstPtr>
class _LIBCPP_TEMPLATE_VIS __forward_list_const_iterator
{
static_assert((!is_const<typename pointer_traits<_NodeConstPtr>::element_type>::value), "");
typedef _NodeConstPtr _NodePtr;
typedef __forward_node_traits<_NodePtr> __traits;
typedef typename __traits::__node __node;
typedef typename __traits::__node_pointer __node_pointer;
typedef typename __traits::__begin_node_pointer __begin_node_pointer;
typedef typename __traits::__iter_node_pointer __iter_node_pointer;
typedef typename __traits::__void_pointer __void_pointer;
__iter_node_pointer __ptr_;
__begin_node_pointer __get_begin() const {
return static_cast<__begin_node_pointer>(
static_cast<__void_pointer>(__ptr_));
}
__node_pointer __get_unsafe_node_pointer() const {
return static_cast<__node_pointer>(
static_cast<__void_pointer>(__ptr_));
}
_LIBCPP_INLINE_VISIBILITY
explicit __forward_list_const_iterator(nullptr_t) _NOEXCEPT
: __ptr_(nullptr) {}
_LIBCPP_INLINE_VISIBILITY
explicit __forward_list_const_iterator(__begin_node_pointer __p) _NOEXCEPT
: __ptr_(__traits::__as_iter_node(__p)) {}
_LIBCPP_INLINE_VISIBILITY
explicit __forward_list_const_iterator(__node_pointer __p) _NOEXCEPT
: __ptr_(__traits::__as_iter_node(__p)) {}
template<class, class> friend class forward_list;
public:
typedef forward_iterator_tag iterator_category;
typedef typename __traits::__node_value_type value_type;
typedef const value_type& reference;
typedef typename pointer_traits<__node_pointer>::difference_type
difference_type;
typedef typename __rebind_pointer<__node_pointer, const value_type>::type
pointer;
_LIBCPP_INLINE_VISIBILITY
__forward_list_const_iterator() _NOEXCEPT : __ptr_(nullptr) {}
_LIBCPP_INLINE_VISIBILITY
__forward_list_const_iterator(__forward_list_iterator<__node_pointer> __p) _NOEXCEPT
: __ptr_(__p.__ptr_) {}
_LIBCPP_INLINE_VISIBILITY
reference operator*() const {return __get_unsafe_node_pointer()->__value_;}
_LIBCPP_INLINE_VISIBILITY
pointer operator->() const {return pointer_traits<pointer>::pointer_to(
__get_unsafe_node_pointer()->__value_);}
_LIBCPP_INLINE_VISIBILITY
__forward_list_const_iterator& operator++()
{
__ptr_ = __traits::__as_iter_node(__ptr_->__next_);
return *this;
}
_LIBCPP_INLINE_VISIBILITY
__forward_list_const_iterator operator++(int)
{
__forward_list_const_iterator __t(*this);
++(*this);
return __t;
}
friend _LIBCPP_INLINE_VISIBILITY
bool operator==(const __forward_list_const_iterator& __x,
const __forward_list_const_iterator& __y)
{return __x.__ptr_ == __y.__ptr_;}
friend _LIBCPP_INLINE_VISIBILITY
bool operator!=(const __forward_list_const_iterator& __x,
const __forward_list_const_iterator& __y)
{return !(__x == __y);}
};
template <class _Tp, class _Alloc>
class __forward_list_base
{
protected:
typedef _Tp value_type;
typedef _Alloc allocator_type;
typedef typename allocator_traits<allocator_type>::void_pointer void_pointer;
typedef __forward_list_node<value_type, void_pointer> __node;
typedef typename __begin_node_of<value_type, void_pointer>::type __begin_node;
typedef typename __rebind_alloc_helper<allocator_traits<allocator_type>, __node>::type __node_allocator;
typedef allocator_traits<__node_allocator> __node_traits;
typedef typename __node_traits::pointer __node_pointer;
typedef typename __rebind_alloc_helper<
allocator_traits<allocator_type>, __begin_node
>::type __begin_node_allocator;
typedef typename allocator_traits<__begin_node_allocator>::pointer
__begin_node_pointer;
__compressed_pair<__begin_node, __node_allocator> __before_begin_;
_LIBCPP_INLINE_VISIBILITY
__begin_node_pointer __before_begin() _NOEXCEPT
{return pointer_traits<__begin_node_pointer>::pointer_to(__before_begin_.first());}
_LIBCPP_INLINE_VISIBILITY
__begin_node_pointer __before_begin() const _NOEXCEPT
{return pointer_traits<__begin_node_pointer>::pointer_to(const_cast<__begin_node&>(__before_begin_.first()));}
_LIBCPP_INLINE_VISIBILITY
__node_allocator& __alloc() _NOEXCEPT
{return __before_begin_.second();}
_LIBCPP_INLINE_VISIBILITY
const __node_allocator& __alloc() const _NOEXCEPT
{return __before_begin_.second();}
typedef __forward_list_iterator<__node_pointer> iterator;
typedef __forward_list_const_iterator<__node_pointer> const_iterator;
_LIBCPP_INLINE_VISIBILITY
__forward_list_base()
_NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
: __before_begin_(__begin_node()) {}
_LIBCPP_INLINE_VISIBILITY
__forward_list_base(const allocator_type& __a)
: __before_begin_(__begin_node(), __node_allocator(__a)) {}
#ifndef _LIBCPP_CXX03_LANG
public:
_LIBCPP_INLINE_VISIBILITY
__forward_list_base(__forward_list_base&& __x)
_NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value);
_LIBCPP_INLINE_VISIBILITY
__forward_list_base(__forward_list_base&& __x, const allocator_type& __a);
#endif // _LIBCPP_CXX03_LANG
private:
__forward_list_base(const __forward_list_base&);
__forward_list_base& operator=(const __forward_list_base&);
public:
~__forward_list_base();
protected:
_LIBCPP_INLINE_VISIBILITY
void __copy_assign_alloc(const __forward_list_base& __x)
{__copy_assign_alloc(__x, integral_constant<bool,
__node_traits::propagate_on_container_copy_assignment::value>());}
_LIBCPP_INLINE_VISIBILITY
void __move_assign_alloc(__forward_list_base& __x)
_NOEXCEPT_(!__node_traits::propagate_on_container_move_assignment::value ||
is_nothrow_move_assignable<__node_allocator>::value)
{__move_assign_alloc(__x, integral_constant<bool,
__node_traits::propagate_on_container_move_assignment::value>());}
public:
_LIBCPP_INLINE_VISIBILITY
void swap(__forward_list_base& __x)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT;
#else
_NOEXCEPT_(!__node_traits::propagate_on_container_move_assignment::value ||
__is_nothrow_swappable<__node_allocator>::value);
#endif
protected:
void clear() _NOEXCEPT;
private:
_LIBCPP_INLINE_VISIBILITY
void __copy_assign_alloc(const __forward_list_base&, false_type) {}
_LIBCPP_INLINE_VISIBILITY
void __copy_assign_alloc(const __forward_list_base& __x, true_type)
{
if (__alloc() != __x.__alloc())
clear();
__alloc() = __x.__alloc();
}
_LIBCPP_INLINE_VISIBILITY
void __move_assign_alloc(__forward_list_base&, false_type) _NOEXCEPT
{}
_LIBCPP_INLINE_VISIBILITY
void __move_assign_alloc(__forward_list_base& __x, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<__node_allocator>::value)
{__alloc() = _VSTD::move(__x.__alloc());}
};
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
inline
__forward_list_base<_Tp, _Alloc>::__forward_list_base(__forward_list_base&& __x)
_NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value)
: __before_begin_(_VSTD::move(__x.__before_begin_))
{
__x.__before_begin()->__next_ = nullptr;
}
template <class _Tp, class _Alloc>
inline
__forward_list_base<_Tp, _Alloc>::__forward_list_base(__forward_list_base&& __x,
const allocator_type& __a)
: __before_begin_(__begin_node(), __node_allocator(__a))
{
if (__alloc() == __x.__alloc())
{
__before_begin()->__next_ = __x.__before_begin()->__next_;
__x.__before_begin()->__next_ = nullptr;
}
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
__forward_list_base<_Tp, _Alloc>::~__forward_list_base()
{
clear();
}
template <class _Tp, class _Alloc>
inline
void
__forward_list_base<_Tp, _Alloc>::swap(__forward_list_base& __x)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT
#else
_NOEXCEPT_(!__node_traits::propagate_on_container_move_assignment::value ||
__is_nothrow_swappable<__node_allocator>::value)
#endif
{
__swap_allocator(__alloc(), __x.__alloc(),
integral_constant<bool, __node_traits::propagate_on_container_swap::value>());
using _VSTD::swap;
swap(__before_begin()->__next_, __x.__before_begin()->__next_);
}
template <class _Tp, class _Alloc>
void
__forward_list_base<_Tp, _Alloc>::clear() _NOEXCEPT
{
__node_allocator& __a = __alloc();
for (__node_pointer __p = __before_begin()->__next_; __p != nullptr;)
{
__node_pointer __next = __p->__next_;
__node_traits::destroy(__a, _VSTD::addressof(__p->__value_));
__node_traits::deallocate(__a, __p, 1);
__p = __next;
}
__before_begin()->__next_ = nullptr;
}
template <class _Tp, class _Alloc /*= allocator<_Tp>*/>
class _LIBCPP_TEMPLATE_VIS forward_list
: private __forward_list_base<_Tp, _Alloc>
{
typedef __forward_list_base<_Tp, _Alloc> base;
typedef typename base::__node_allocator __node_allocator;
typedef typename base::__node __node;
typedef typename base::__node_traits __node_traits;
typedef typename base::__node_pointer __node_pointer;
typedef typename base::__begin_node_pointer __begin_node_pointer;
public:
typedef _Tp value_type;
typedef _Alloc allocator_type;
static_assert((is_same<typename allocator_type::value_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 allocator_traits<allocator_type>::pointer pointer;
typedef typename allocator_traits<allocator_type>::const_pointer const_pointer;
typedef typename allocator_traits<allocator_type>::size_type size_type;
typedef typename allocator_traits<allocator_type>::difference_type difference_type;
typedef typename base::iterator iterator;
typedef typename base::const_iterator const_iterator;
_LIBCPP_INLINE_VISIBILITY
forward_list()
_NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
{} // = default;
_LIBCPP_INLINE_VISIBILITY
explicit forward_list(const allocator_type& __a);
explicit forward_list(size_type __n);
#if _LIBCPP_STD_VER > 11
explicit forward_list(size_type __n, const allocator_type& __a);
#endif
forward_list(size_type __n, const value_type& __v);
forward_list(size_type __n, const value_type& __v, const allocator_type& __a);
template <class _InputIterator>
forward_list(_InputIterator __f, _InputIterator __l,
typename enable_if<
__is_input_iterator<_InputIterator>::value
>::type* = nullptr);
template <class _InputIterator>
forward_list(_InputIterator __f, _InputIterator __l,
const allocator_type& __a,
typename enable_if<
__is_input_iterator<_InputIterator>::value
>::type* = nullptr);
forward_list(const forward_list& __x);
forward_list(const forward_list& __x, const allocator_type& __a);
forward_list& operator=(const forward_list& __x);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
forward_list(forward_list&& __x)
_NOEXCEPT_(is_nothrow_move_constructible<base>::value)
: base(_VSTD::move(__x)) {}
forward_list(forward_list&& __x, const allocator_type& __a);
forward_list(initializer_list<value_type> __il);
forward_list(initializer_list<value_type> __il, const allocator_type& __a);
_LIBCPP_INLINE_VISIBILITY
forward_list& operator=(forward_list&& __x)
_NOEXCEPT_(
__node_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value);
_LIBCPP_INLINE_VISIBILITY
forward_list& operator=(initializer_list<value_type> __il);
_LIBCPP_INLINE_VISIBILITY
void assign(initializer_list<value_type> __il);
#endif // _LIBCPP_CXX03_LANG
// ~forward_list() = default;
template <class _InputIterator>
typename enable_if
<
__is_input_iterator<_InputIterator>::value,
void
>::type
assign(_InputIterator __f, _InputIterator __l);
void assign(size_type __n, const value_type& __v);
_LIBCPP_INLINE_VISIBILITY
allocator_type get_allocator() const _NOEXCEPT
{return allocator_type(base::__alloc());}
_LIBCPP_INLINE_VISIBILITY
iterator begin() _NOEXCEPT
{return iterator(base::__before_begin()->__next_);}
_LIBCPP_INLINE_VISIBILITY
const_iterator begin() const _NOEXCEPT
{return const_iterator(base::__before_begin()->__next_);}
_LIBCPP_INLINE_VISIBILITY
iterator end() _NOEXCEPT
{return iterator(nullptr);}
_LIBCPP_INLINE_VISIBILITY
const_iterator end() const _NOEXCEPT
{return const_iterator(nullptr);}
_LIBCPP_INLINE_VISIBILITY
const_iterator cbegin() const _NOEXCEPT
{return const_iterator(base::__before_begin()->__next_);}
_LIBCPP_INLINE_VISIBILITY
const_iterator cend() const _NOEXCEPT
{return const_iterator(nullptr);}
_LIBCPP_INLINE_VISIBILITY
iterator before_begin() _NOEXCEPT
{return iterator(base::__before_begin());}
_LIBCPP_INLINE_VISIBILITY
const_iterator before_begin() const _NOEXCEPT
{return const_iterator(base::__before_begin());}
_LIBCPP_INLINE_VISIBILITY
const_iterator cbefore_begin() const _NOEXCEPT
{return const_iterator(base::__before_begin());}
_LIBCPP_NODISCARD_AFTER_CXX17 _LIBCPP_INLINE_VISIBILITY
bool empty() const _NOEXCEPT
{return base::__before_begin()->__next_ == nullptr;}
_LIBCPP_INLINE_VISIBILITY
size_type max_size() const _NOEXCEPT {
return std::min<size_type>(
__node_traits::max_size(base::__alloc()),
numeric_limits<difference_type>::max());
}
_LIBCPP_INLINE_VISIBILITY
reference front() {return base::__before_begin()->__next_->__value_;}
_LIBCPP_INLINE_VISIBILITY
const_reference front() const {return base::__before_begin()->__next_->__value_;}
#ifndef _LIBCPP_CXX03_LANG
#if _LIBCPP_STD_VER > 14
template <class... _Args> reference emplace_front(_Args&&... __args);
#else
template <class... _Args> void emplace_front(_Args&&... __args);
#endif
void push_front(value_type&& __v);
#endif // _LIBCPP_CXX03_LANG
void push_front(const value_type& __v);
void pop_front();
#ifndef _LIBCPP_CXX03_LANG
template <class... _Args>
iterator emplace_after(const_iterator __p, _Args&&... __args);
iterator insert_after(const_iterator __p, value_type&& __v);
iterator insert_after(const_iterator __p, initializer_list<value_type> __il)
{return insert_after(__p, __il.begin(), __il.end());}
#endif // _LIBCPP_CXX03_LANG
iterator insert_after(const_iterator __p, const value_type& __v);
iterator insert_after(const_iterator __p, size_type __n, const value_type& __v);
template <class _InputIterator>
_LIBCPP_INLINE_VISIBILITY
typename enable_if
<
__is_input_iterator<_InputIterator>::value,
iterator
>::type
insert_after(const_iterator __p, _InputIterator __f, _InputIterator __l);
iterator erase_after(const_iterator __p);
iterator erase_after(const_iterator __f, const_iterator __l);
_LIBCPP_INLINE_VISIBILITY
void swap(forward_list& __x)
#if _LIBCPP_STD_VER >= 14
_NOEXCEPT
#else
_NOEXCEPT_(!__node_traits::propagate_on_container_swap::value ||
__is_nothrow_swappable<__node_allocator>::value)
#endif
{base::swap(__x);}
void resize(size_type __n);
void resize(size_type __n, const value_type& __v);
_LIBCPP_INLINE_VISIBILITY
void clear() _NOEXCEPT {base::clear();}
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
void splice_after(const_iterator __p, forward_list&& __x);
_LIBCPP_INLINE_VISIBILITY
void splice_after(const_iterator __p, forward_list&& __x, const_iterator __i);
_LIBCPP_INLINE_VISIBILITY
void splice_after(const_iterator __p, forward_list&& __x,
const_iterator __f, const_iterator __l);
#endif // _LIBCPP_CXX03_LANG
void splice_after(const_iterator __p, forward_list& __x);
void splice_after(const_iterator __p, forward_list& __x, const_iterator __i);
void splice_after(const_iterator __p, forward_list& __x,
const_iterator __f, const_iterator __l);
void remove(const value_type& __v);
template <class _Predicate> void remove_if(_Predicate __pred);
_LIBCPP_INLINE_VISIBILITY
void unique() {unique(__equal_to<value_type>());}
template <class _BinaryPredicate> void unique(_BinaryPredicate __binary_pred);
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
void merge(forward_list&& __x) {merge(__x, __less<value_type>());}
template <class _Compare>
_LIBCPP_INLINE_VISIBILITY
void merge(forward_list&& __x, _Compare __comp)
{merge(__x, _VSTD::move(__comp));}
#endif // _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
void merge(forward_list& __x) {merge(__x, __less<value_type>());}
template <class _Compare> void merge(forward_list& __x, _Compare __comp);
_LIBCPP_INLINE_VISIBILITY
void sort() {sort(__less<value_type>());}
template <class _Compare> _LIBCPP_INLINE_VISIBILITY void sort(_Compare __comp);
void reverse() _NOEXCEPT;
private:
#ifndef _LIBCPP_CXX03_LANG
void __move_assign(forward_list& __x, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value);
void __move_assign(forward_list& __x, false_type);
#endif // _LIBCPP_CXX03_LANG
template <class _Compare>
static
__node_pointer
__merge(__node_pointer __f1, __node_pointer __f2, _Compare& __comp);
template <class _Compare>
static
__node_pointer
__sort(__node_pointer __f, difference_type __sz, _Compare& __comp);
};
template <class _Tp, class _Alloc>
inline
forward_list<_Tp, _Alloc>::forward_list(const allocator_type& __a)
: base(__a)
{
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(size_type __n)
{
if (__n > 0)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(nullptr, _Dp(__a, 1));
for (__begin_node_pointer __p = base::__before_begin(); __n > 0; --__n,
__p = __p->__next_as_begin())
{
__h.reset(__node_traits::allocate(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_));
__h->__next_ = nullptr;
__p->__next_ = __h.release();
}
}
}
#if _LIBCPP_STD_VER > 11
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(size_type __n,
const allocator_type& __base_alloc)
: base ( __base_alloc )
{
if (__n > 0)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(nullptr, _Dp(__a, 1));
for (__begin_node_pointer __p = base::__before_begin(); __n > 0; --__n,
__p = __p->__next_as_begin())
{
__h.reset(__node_traits::allocate(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_));
__h->__next_ = nullptr;
__p->__next_ = __h.release();
}
}
}
#endif
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(size_type __n, const value_type& __v)
{
insert_after(cbefore_begin(), __n, __v);
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(size_type __n, const value_type& __v,
const allocator_type& __a)
: base(__a)
{
insert_after(cbefore_begin(), __n, __v);
}
template <class _Tp, class _Alloc>
template <class _InputIterator>
forward_list<_Tp, _Alloc>::forward_list(_InputIterator __f, _InputIterator __l,
typename enable_if<
__is_input_iterator<_InputIterator>::value
>::type*)
{
insert_after(cbefore_begin(), __f, __l);
}
template <class _Tp, class _Alloc>
template <class _InputIterator>
forward_list<_Tp, _Alloc>::forward_list(_InputIterator __f, _InputIterator __l,
const allocator_type& __a,
typename enable_if<
__is_input_iterator<_InputIterator>::value
>::type*)
: base(__a)
{
insert_after(cbefore_begin(), __f, __l);
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(const forward_list& __x)
: base(allocator_type(
__node_traits::select_on_container_copy_construction(__x.__alloc())
)
)
{
insert_after(cbefore_begin(), __x.begin(), __x.end());
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(const forward_list& __x,
const allocator_type& __a)
: base(__a)
{
insert_after(cbefore_begin(), __x.begin(), __x.end());
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>&
forward_list<_Tp, _Alloc>::operator=(const forward_list& __x)
{
if (this != &__x)
{
base::__copy_assign_alloc(__x);
assign(__x.begin(), __x.end());
}
return *this;
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(forward_list&& __x,
const allocator_type& __a)
: base(_VSTD::move(__x), __a)
{
if (base::__alloc() != __x.__alloc())
{
typedef move_iterator<iterator> _Ip;
insert_after(cbefore_begin(), _Ip(__x.begin()), _Ip(__x.end()));
}
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(initializer_list<value_type> __il)
{
insert_after(cbefore_begin(), __il.begin(), __il.end());
}
template <class _Tp, class _Alloc>
forward_list<_Tp, _Alloc>::forward_list(initializer_list<value_type> __il,
const allocator_type& __a)
: base(__a)
{
insert_after(cbefore_begin(), __il.begin(), __il.end());
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::__move_assign(forward_list& __x, true_type)
_NOEXCEPT_(is_nothrow_move_assignable<allocator_type>::value)
{
clear();
base::__move_assign_alloc(__x);
base::__before_begin()->__next_ = __x.__before_begin()->__next_;
__x.__before_begin()->__next_ = nullptr;
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::__move_assign(forward_list& __x, false_type)
{
if (base::__alloc() == __x.__alloc())
__move_assign(__x, true_type());
else
{
typedef move_iterator<iterator> _Ip;
assign(_Ip(__x.begin()), _Ip(__x.end()));
}
}
template <class _Tp, class _Alloc>
inline
forward_list<_Tp, _Alloc>&
forward_list<_Tp, _Alloc>::operator=(forward_list&& __x)
_NOEXCEPT_(
__node_traits::propagate_on_container_move_assignment::value &&
is_nothrow_move_assignable<allocator_type>::value)
{
__move_assign(__x, integral_constant<bool,
__node_traits::propagate_on_container_move_assignment::value>());
return *this;
}
template <class _Tp, class _Alloc>
inline
forward_list<_Tp, _Alloc>&
forward_list<_Tp, _Alloc>::operator=(initializer_list<value_type> __il)
{
assign(__il.begin(), __il.end());
return *this;
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
template <class _InputIterator>
typename enable_if
<
__is_input_iterator<_InputIterator>::value,
void
>::type
forward_list<_Tp, _Alloc>::assign(_InputIterator __f, _InputIterator __l)
{
iterator __i = before_begin();
iterator __j = _VSTD::next(__i);
iterator __e = end();
for (; __j != __e && __f != __l; ++__i, (void) ++__j, ++__f)
*__j = *__f;
if (__j == __e)
insert_after(__i, __f, __l);
else
erase_after(__i, __e);
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::assign(size_type __n, const value_type& __v)
{
iterator __i = before_begin();
iterator __j = _VSTD::next(__i);
iterator __e = end();
for (; __j != __e && __n > 0; --__n, ++__i, ++__j)
*__j = __v;
if (__j == __e)
insert_after(__i, __n, __v);
else
erase_after(__i, __e);
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
inline
void
forward_list<_Tp, _Alloc>::assign(initializer_list<value_type> __il)
{
assign(__il.begin(), __il.end());
}
template <class _Tp, class _Alloc>
template <class... _Args>
#if _LIBCPP_STD_VER > 14
typename forward_list<_Tp, _Alloc>::reference
#else
void
#endif
forward_list<_Tp, _Alloc>::emplace_front(_Args&&... __args)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_),
_VSTD::forward<_Args>(__args)...);
__h->__next_ = base::__before_begin()->__next_;
base::__before_begin()->__next_ = __h.release();
#if _LIBCPP_STD_VER > 14
return base::__before_begin()->__next_->__value_;
#endif
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::push_front(value_type&& __v)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), _VSTD::move(__v));
__h->__next_ = base::__before_begin()->__next_;
base::__before_begin()->__next_ = __h.release();
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::push_front(const value_type& __v)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), __v);
__h->__next_ = base::__before_begin()->__next_;
base::__before_begin()->__next_ = __h.release();
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::pop_front()
{
__node_allocator& __a = base::__alloc();
__node_pointer __p = base::__before_begin()->__next_;
base::__before_begin()->__next_ = __p->__next_;
__node_traits::destroy(__a, _VSTD::addressof(__p->__value_));
__node_traits::deallocate(__a, __p, 1);
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
template <class... _Args>
typename forward_list<_Tp, _Alloc>::iterator
forward_list<_Tp, _Alloc>::emplace_after(const_iterator __p, _Args&&... __args)
{
__begin_node_pointer const __r = __p.__get_begin();
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_),
_VSTD::forward<_Args>(__args)...);
__h->__next_ = __r->__next_;
__r->__next_ = __h.release();
return iterator(__r->__next_);
}
template <class _Tp, class _Alloc>
typename forward_list<_Tp, _Alloc>::iterator
forward_list<_Tp, _Alloc>::insert_after(const_iterator __p, value_type&& __v)
{
__begin_node_pointer const __r = __p.__get_begin();
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), _VSTD::move(__v));
__h->__next_ = __r->__next_;
__r->__next_ = __h.release();
return iterator(__r->__next_);
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
typename forward_list<_Tp, _Alloc>::iterator
forward_list<_Tp, _Alloc>::insert_after(const_iterator __p, const value_type& __v)
{
__begin_node_pointer const __r = __p.__get_begin();
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), __v);
__h->__next_ = __r->__next_;
__r->__next_ = __h.release();
return iterator(__r->__next_);
}
template <class _Tp, class _Alloc>
typename forward_list<_Tp, _Alloc>::iterator
forward_list<_Tp, _Alloc>::insert_after(const_iterator __p, size_type __n,
const value_type& __v)
{
__begin_node_pointer __r = __p.__get_begin();
if (__n > 0)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), __v);
__node_pointer __first = __h.release();
__node_pointer __last = __first;
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
for (--__n; __n != 0; --__n, __last = __last->__next_)
{
__h.reset(__node_traits::allocate(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), __v);
__last->__next_ = __h.release();
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
while (__first != nullptr)
{
__node_pointer __next = __first->__next_;
__node_traits::destroy(__a, _VSTD::addressof(__first->__value_));
__node_traits::deallocate(__a, __first, 1);
__first = __next;
}
throw;
}
#endif // _LIBCPP_NO_EXCEPTIONS
__last->__next_ = __r->__next_;
__r->__next_ = __first;
__r = static_cast<__begin_node_pointer>(__last);
}
return iterator(__r);
}
template <class _Tp, class _Alloc>
template <class _InputIterator>
typename enable_if
<
__is_input_iterator<_InputIterator>::value,
typename forward_list<_Tp, _Alloc>::iterator
>::type
forward_list<_Tp, _Alloc>::insert_after(const_iterator __p,
_InputIterator __f, _InputIterator __l)
{
__begin_node_pointer __r = __p.__get_begin();
if (__f != __l)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(__node_traits::allocate(__a, 1), _Dp(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), *__f);
__node_pointer __first = __h.release();
__node_pointer __last = __first;
#ifndef _LIBCPP_NO_EXCEPTIONS
try
{
#endif // _LIBCPP_NO_EXCEPTIONS
for (++__f; __f != __l; ++__f, ((void)(__last = __last->__next_)))
{
__h.reset(__node_traits::allocate(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), *__f);
__last->__next_ = __h.release();
}
#ifndef _LIBCPP_NO_EXCEPTIONS
}
catch (...)
{
while (__first != nullptr)
{
__node_pointer __next = __first->__next_;
__node_traits::destroy(__a, _VSTD::addressof(__first->__value_));
__node_traits::deallocate(__a, __first, 1);
__first = __next;
}
throw;
}
#endif // _LIBCPP_NO_EXCEPTIONS
__last->__next_ = __r->__next_;
__r->__next_ = __first;
__r = static_cast<__begin_node_pointer>(__last);
}
return iterator(__r);
}
template <class _Tp, class _Alloc>
typename forward_list<_Tp, _Alloc>::iterator
forward_list<_Tp, _Alloc>::erase_after(const_iterator __f)
{
__begin_node_pointer __p = __f.__get_begin();
__node_pointer __n = __p->__next_;
__p->__next_ = __n->__next_;
__node_allocator& __a = base::__alloc();
__node_traits::destroy(__a, _VSTD::addressof(__n->__value_));
__node_traits::deallocate(__a, __n, 1);
return iterator(__p->__next_);
}
template <class _Tp, class _Alloc>
typename forward_list<_Tp, _Alloc>::iterator
forward_list<_Tp, _Alloc>::erase_after(const_iterator __f, const_iterator __l)
{
__node_pointer __e = __l.__get_unsafe_node_pointer();
if (__f != __l)
{
__begin_node_pointer __bp = __f.__get_begin();
__node_pointer __n = __bp->__next_;
if (__n != __e)
{
__bp->__next_ = __e;
__node_allocator& __a = base::__alloc();
do
{
__node_pointer __tmp = __n->__next_;
__node_traits::destroy(__a, _VSTD::addressof(__n->__value_));
__node_traits::deallocate(__a, __n, 1);
__n = __tmp;
} while (__n != __e);
}
}
return iterator(__e);
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::resize(size_type __n)
{
size_type __sz = 0;
iterator __p = before_begin();
iterator __i = begin();
iterator __e = end();
for (; __i != __e && __sz < __n; ++__p, ++__i, ++__sz)
;
if (__i != __e)
erase_after(__p, __e);
else
{
__n -= __sz;
if (__n > 0)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(nullptr, _Dp(__a, 1));
for (__begin_node_pointer __ptr = __p.__get_begin(); __n > 0; --__n,
__ptr = __ptr->__next_as_begin())
{
__h.reset(__node_traits::allocate(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_));
__h->__next_ = nullptr;
__ptr->__next_ = __h.release();
}
}
}
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::resize(size_type __n, const value_type& __v)
{
size_type __sz = 0;
iterator __p = before_begin();
iterator __i = begin();
iterator __e = end();
for (; __i != __e && __sz < __n; ++__p, ++__i, ++__sz)
;
if (__i != __e)
erase_after(__p, __e);
else
{
__n -= __sz;
if (__n > 0)
{
__node_allocator& __a = base::__alloc();
typedef __allocator_destructor<__node_allocator> _Dp;
unique_ptr<__node, _Dp> __h(nullptr, _Dp(__a, 1));
for (__begin_node_pointer __ptr = __p.__get_begin(); __n > 0; --__n,
__ptr = __ptr->__next_as_begin())
{
__h.reset(__node_traits::allocate(__a, 1));
__node_traits::construct(__a, _VSTD::addressof(__h->__value_), __v);
__h->__next_ = nullptr;
__ptr->__next_ = __h.release();
}
}
}
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::splice_after(const_iterator __p,
forward_list& __x)
{
if (!__x.empty())
{
if (__p.__get_begin()->__next_ != nullptr)
{
const_iterator __lm1 = __x.before_begin();
while (__lm1.__get_begin()->__next_ != nullptr)
++__lm1;
__lm1.__get_begin()->__next_ = __p.__get_begin()->__next_;
}
__p.__get_begin()->__next_ = __x.__before_begin()->__next_;
__x.__before_begin()->__next_ = nullptr;
}
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::splice_after(const_iterator __p,
forward_list& /*__other*/,
const_iterator __i)
{
const_iterator __lm1 = _VSTD::next(__i);
if (__p != __i && __p != __lm1)
{
__i.__get_begin()->__next_ = __lm1.__get_begin()->__next_;
__lm1.__get_begin()->__next_ = __p.__get_begin()->__next_;
__p.__get_begin()->__next_ = __lm1.__get_unsafe_node_pointer();
}
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::splice_after(const_iterator __p,
forward_list& /*__other*/,
const_iterator __f, const_iterator __l)
{
if (__f != __l && __p != __f)
{
const_iterator __lm1 = __f;
while (__lm1.__get_begin()->__next_ != __l.__get_begin())
++__lm1;
if (__f != __lm1)
{
__lm1.__get_begin()->__next_ = __p.__get_begin()->__next_;
__p.__get_begin()->__next_ = __f.__get_begin()->__next_;
__f.__get_begin()->__next_ = __l.__get_unsafe_node_pointer();
}
}
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
forward_list<_Tp, _Alloc>::splice_after(const_iterator __p,
forward_list&& __x)
{
splice_after(__p, __x);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
forward_list<_Tp, _Alloc>::splice_after(const_iterator __p,
forward_list&& __x,
const_iterator __i)
{
splice_after(__p, __x, __i);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
forward_list<_Tp, _Alloc>::splice_after(const_iterator __p,
forward_list&& __x,
const_iterator __f, const_iterator __l)
{
splice_after(__p, __x, __f, __l);
}
#endif // _LIBCPP_CXX03_LANG
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::remove(const value_type& __v)
{
forward_list<_Tp, _Alloc> __deleted_nodes; // collect the nodes we're removing
iterator __e = end();
for (iterator __i = before_begin(); __i.__get_begin()->__next_ != nullptr;)
{
if (__i.__get_begin()->__next_->__value_ == __v)
{
iterator __j = _VSTD::next(__i, 2);
for (; __j != __e && *__j == __v; ++__j)
;
__deleted_nodes.splice_after(__deleted_nodes.before_begin(), *this, __i, __j);
if (__j == __e)
break;
__i = __j;
}
else
++__i;
}
}
template <class _Tp, class _Alloc>
template <class _Predicate>
void
forward_list<_Tp, _Alloc>::remove_if(_Predicate __pred)
{
iterator __e = end();
for (iterator __i = before_begin(); __i.__get_begin()->__next_ != nullptr;)
{
if (__pred(__i.__get_begin()->__next_->__value_))
{
iterator __j = _VSTD::next(__i, 2);
for (; __j != __e && __pred(*__j); ++__j)
;
erase_after(__i, __j);
if (__j == __e)
break;
__i = __j;
}
else
++__i;
}
}
template <class _Tp, class _Alloc>
template <class _BinaryPredicate>
void
forward_list<_Tp, _Alloc>::unique(_BinaryPredicate __binary_pred)
{
for (iterator __i = begin(), __e = end(); __i != __e;)
{
iterator __j = _VSTD::next(__i);
for (; __j != __e && __binary_pred(*__i, *__j); ++__j)
;
if (__i.__get_begin()->__next_ != __j.__get_unsafe_node_pointer())
erase_after(__i, __j);
__i = __j;
}
}
template <class _Tp, class _Alloc>
template <class _Compare>
void
forward_list<_Tp, _Alloc>::merge(forward_list& __x, _Compare __comp)
{
if (this != &__x)
{
base::__before_begin()->__next_ = __merge(base::__before_begin()->__next_,
__x.__before_begin()->__next_,
__comp);
__x.__before_begin()->__next_ = nullptr;
}
}
template <class _Tp, class _Alloc>
template <class _Compare>
typename forward_list<_Tp, _Alloc>::__node_pointer
forward_list<_Tp, _Alloc>::__merge(__node_pointer __f1, __node_pointer __f2,
_Compare& __comp)
{
if (__f1 == nullptr)
return __f2;
if (__f2 == nullptr)
return __f1;
__node_pointer __r;
if (__comp(__f2->__value_, __f1->__value_))
{
__node_pointer __t = __f2;
while (__t->__next_ != nullptr &&
__comp(__t->__next_->__value_, __f1->__value_))
__t = __t->__next_;
__r = __f2;
__f2 = __t->__next_;
__t->__next_ = __f1;
}
else
__r = __f1;
__node_pointer __p = __f1;
__f1 = __f1->__next_;
while (__f1 != nullptr && __f2 != nullptr)
{
if (__comp(__f2->__value_, __f1->__value_))
{
__node_pointer __t = __f2;
while (__t->__next_ != nullptr &&
__comp(__t->__next_->__value_, __f1->__value_))
__t = __t->__next_;
__p->__next_ = __f2;
__f2 = __t->__next_;
__t->__next_ = __f1;
}
__p = __f1;
__f1 = __f1->__next_;
}
if (__f2 != nullptr)
__p->__next_ = __f2;
return __r;
}
template <class _Tp, class _Alloc>
template <class _Compare>
inline
void
forward_list<_Tp, _Alloc>::sort(_Compare __comp)
{
base::__before_begin()->__next_ = __sort(base::__before_begin()->__next_,
_VSTD::distance(begin(), end()), __comp);
}
template <class _Tp, class _Alloc>
template <class _Compare>
typename forward_list<_Tp, _Alloc>::__node_pointer
forward_list<_Tp, _Alloc>::__sort(__node_pointer __f1, difference_type __sz,
_Compare& __comp)
{
switch (__sz)
{
case 0:
case 1:
return __f1;
case 2:
if (__comp(__f1->__next_->__value_, __f1->__value_))
{
__node_pointer __t = __f1->__next_;
__t->__next_ = __f1;
__f1->__next_ = nullptr;
__f1 = __t;
}
return __f1;
}
difference_type __sz1 = __sz / 2;
difference_type __sz2 = __sz - __sz1;
__node_pointer __t = _VSTD::next(iterator(__f1), __sz1 - 1).__get_unsafe_node_pointer();
__node_pointer __f2 = __t->__next_;
__t->__next_ = nullptr;
return __merge(__sort(__f1, __sz1, __comp),
__sort(__f2, __sz2, __comp), __comp);
}
template <class _Tp, class _Alloc>
void
forward_list<_Tp, _Alloc>::reverse() _NOEXCEPT
{
__node_pointer __p = base::__before_begin()->__next_;
if (__p != nullptr)
{
__node_pointer __f = __p->__next_;
__p->__next_ = nullptr;
while (__f != nullptr)
{
__node_pointer __t = __f->__next_;
__f->__next_ = __p;
__p = __f;
__f = __t;
}
base::__before_begin()->__next_ = __p;
}
}
template <class _Tp, class _Alloc>
bool operator==(const forward_list<_Tp, _Alloc>& __x,
const forward_list<_Tp, _Alloc>& __y)
{
typedef forward_list<_Tp, _Alloc> _Cp;
typedef typename _Cp::const_iterator _Ip;
_Ip __ix = __x.begin();
_Ip __ex = __x.end();
_Ip __iy = __y.begin();
_Ip __ey = __y.end();
for (; __ix != __ex && __iy != __ey; ++__ix, ++__iy)
if (!(*__ix == *__iy))
return false;
return (__ix == __ex) == (__iy == __ey);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool operator!=(const forward_list<_Tp, _Alloc>& __x,
const forward_list<_Tp, _Alloc>& __y)
{
return !(__x == __y);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool operator< (const forward_list<_Tp, _Alloc>& __x,
const forward_list<_Tp, _Alloc>& __y)
{
return _VSTD::lexicographical_compare(__x.begin(), __x.end(),
__y.begin(), __y.end());
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool operator> (const forward_list<_Tp, _Alloc>& __x,
const forward_list<_Tp, _Alloc>& __y)
{
return __y < __x;
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool operator>=(const forward_list<_Tp, _Alloc>& __x,
const forward_list<_Tp, _Alloc>& __y)
{
return !(__x < __y);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
bool operator<=(const forward_list<_Tp, _Alloc>& __x,
const forward_list<_Tp, _Alloc>& __y)
{
return !(__y < __x);
}
template <class _Tp, class _Alloc>
inline _LIBCPP_INLINE_VISIBILITY
void
swap(forward_list<_Tp, _Alloc>& __x, forward_list<_Tp, _Alloc>& __y)
_NOEXCEPT_(_NOEXCEPT_(__x.swap(__y)))
{
__x.swap(__y);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP_FORWARD_LIST