// Debugging list implementation -*- C++ -*-
// Copyright (C) 2003-2017 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file debug/list
* This file is a GNU debug extension to the Standard C++ Library.
*/
#ifndef _GLIBCXX_DEBUG_LIST
#define _GLIBCXX_DEBUG_LIST 1
#pragma GCC system_header
#include <list>
#include <debug/safe_sequence.h>
#include <debug/safe_container.h>
#include <debug/safe_iterator.h>
namespace std _GLIBCXX_VISIBILITY(default)
{
namespace __debug
{
/// Class std::list with safety/checking/debug instrumentation.
template<typename _Tp, typename _Allocator = std::allocator<_Tp> >
class list
: public __gnu_debug::_Safe_container<
list<_Tp, _Allocator>, _Allocator,
__gnu_debug::_Safe_node_sequence>,
public _GLIBCXX_STD_C::list<_Tp, _Allocator>
{
typedef _GLIBCXX_STD_C::list<_Tp, _Allocator> _Base;
typedef __gnu_debug::_Safe_container<
list, _Allocator, __gnu_debug::_Safe_node_sequence> _Safe;
typedef typename _Base::iterator _Base_iterator;
typedef typename _Base::const_iterator _Base_const_iterator;
typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
typedef __gnu_debug::_Not_equal_to<_Base_const_iterator> _Not_equal;
public:
typedef typename _Base::reference reference;
typedef typename _Base::const_reference const_reference;
typedef __gnu_debug::_Safe_iterator<_Base_iterator, list>
iterator;
typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, list>
const_iterator;
typedef typename _Base::size_type size_type;
typedef typename _Base::difference_type difference_type;
typedef _Tp value_type;
typedef _Allocator allocator_type;
typedef typename _Base::pointer pointer;
typedef typename _Base::const_pointer const_pointer;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
// 23.2.2.1 construct/copy/destroy:
#if __cplusplus < 201103L
list()
: _Base() { }
list(const list& __x)
: _Base(__x) { }
~list() { }
#else
list() = default;
list(const list&) = default;
list(list&&) = default;
list(initializer_list<value_type> __l,
const allocator_type& __a = allocator_type())
: _Base(__l, __a) { }
~list() = default;
list(const list& __x, const allocator_type& __a)
: _Base(__x, __a) { }
list(list&& __x, const allocator_type& __a)
: _Base(std::move(__x), __a) { }
#endif
explicit
list(const _Allocator& __a) _GLIBCXX_NOEXCEPT
: _Base(__a) { }
#if __cplusplus >= 201103L
explicit
list(size_type __n, const allocator_type& __a = allocator_type())
: _Base(__n, __a) { }
list(size_type __n, const _Tp& __value,
const _Allocator& __a = _Allocator())
: _Base(__n, __value, __a) { }
#else
explicit
list(size_type __n, const _Tp& __value = _Tp(),
const _Allocator& __a = _Allocator())
: _Base(__n, __value, __a) { }
#endif
#if __cplusplus >= 201103L
template<class _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
#else
template<class _InputIterator>
#endif
list(_InputIterator __first, _InputIterator __last,
const _Allocator& __a = _Allocator())
: _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
__last)),
__gnu_debug::__base(__last), __a)
{ }
list(const _Base& __x)
: _Base(__x) { }
#if __cplusplus < 201103L
list&
operator=(const list& __x)
{
this->_M_safe() = __x;
_M_base() = __x;
return *this;
}
#else
list&
operator=(const list&) = default;
list&
operator=(list&&) = default;
list&
operator=(initializer_list<value_type> __l)
{
this->_M_invalidate_all();
_M_base() = __l;
return *this;
}
void
assign(initializer_list<value_type> __l)
{
_Base::assign(__l);
this->_M_invalidate_all();
}
#endif
#if __cplusplus >= 201103L
template<class _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
#else
template<class _InputIterator>
#endif
void
assign(_InputIterator __first, _InputIterator __last)
{
typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
__glibcxx_check_valid_range2(__first, __last, __dist);
if (__dist.second >= __gnu_debug::__dp_sign)
_Base::assign(__gnu_debug::__unsafe(__first),
__gnu_debug::__unsafe(__last));
else
_Base::assign(__first, __last);
this->_M_invalidate_all();
}
void
assign(size_type __n, const _Tp& __t)
{
_Base::assign(__n, __t);
this->_M_invalidate_all();
}
using _Base::get_allocator;
// iterators:
iterator
begin() _GLIBCXX_NOEXCEPT
{ return iterator(_Base::begin(), this); }
const_iterator
begin() const _GLIBCXX_NOEXCEPT
{ return const_iterator(_Base::begin(), this); }
iterator
end() _GLIBCXX_NOEXCEPT
{ return iterator(_Base::end(), this); }
const_iterator
end() const _GLIBCXX_NOEXCEPT
{ return const_iterator(_Base::end(), this); }
reverse_iterator
rbegin() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(end()); }
const_reverse_iterator
rbegin() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(end()); }
reverse_iterator
rend() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(begin()); }
const_reverse_iterator
rend() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(begin()); }
#if __cplusplus >= 201103L
const_iterator
cbegin() const noexcept
{ return const_iterator(_Base::begin(), this); }
const_iterator
cend() const noexcept
{ return const_iterator(_Base::end(), this); }
const_reverse_iterator
crbegin() const noexcept
{ return const_reverse_iterator(end()); }
const_reverse_iterator
crend() const noexcept
{ return const_reverse_iterator(begin()); }
#endif
// 23.2.2.2 capacity:
using _Base::empty;
using _Base::size;
using _Base::max_size;
#if __cplusplus >= 201103L
void
resize(size_type __sz)
{
this->_M_detach_singular();
// if __sz < size(), invalidate all iterators in [begin + __sz, end())
_Base_iterator __victim = _Base::begin();
_Base_iterator __end = _Base::end();
for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
++__victim;
for (; __victim != __end; ++__victim)
this->_M_invalidate_if(_Equal(__victim));
__try
{
_Base::resize(__sz);
}
__catch(...)
{
this->_M_revalidate_singular();
__throw_exception_again;
}
}
void
resize(size_type __sz, const _Tp& __c)
{
this->_M_detach_singular();
// if __sz < size(), invalidate all iterators in [begin + __sz, end())
_Base_iterator __victim = _Base::begin();
_Base_iterator __end = _Base::end();
for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
++__victim;
for (; __victim != __end; ++__victim)
this->_M_invalidate_if(_Equal(__victim));
__try
{
_Base::resize(__sz, __c);
}
__catch(...)
{
this->_M_revalidate_singular();
__throw_exception_again;
}
}
#else
void
resize(size_type __sz, _Tp __c = _Tp())
{
this->_M_detach_singular();
// if __sz < size(), invalidate all iterators in [begin + __sz, end())
_Base_iterator __victim = _Base::begin();
_Base_iterator __end = _Base::end();
for (size_type __i = __sz; __victim != __end && __i > 0; --__i)
++__victim;
for (; __victim != __end; ++__victim)
this->_M_invalidate_if(_Equal(__victim));
__try
{
_Base::resize(__sz, __c);
}
__catch(...)
{
this->_M_revalidate_singular();
__throw_exception_again;
}
}
#endif
// element access:
reference
front() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::front();
}
const_reference
front() const _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::front();
}
reference
back() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::back();
}
const_reference
back() const _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::back();
}
// 23.2.2.3 modifiers:
using _Base::push_front;
#if __cplusplus >= 201103L
using _Base::emplace_front;
#endif
void
pop_front() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
this->_M_invalidate_if(_Equal(_Base::begin()));
_Base::pop_front();
}
using _Base::push_back;
#if __cplusplus >= 201103L
using _Base::emplace_back;
#endif
void
pop_back() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
this->_M_invalidate_if(_Equal(--_Base::end()));
_Base::pop_back();
}
#if __cplusplus >= 201103L
template<typename... _Args>
iterator
emplace(const_iterator __position, _Args&&... __args)
{
__glibcxx_check_insert(__position);
return iterator(_Base::emplace(__position.base(),
std::forward<_Args>(__args)...), this);
}
#endif
iterator
#if __cplusplus >= 201103L
insert(const_iterator __position, const _Tp& __x)
#else
insert(iterator __position, const _Tp& __x)
#endif
{
__glibcxx_check_insert(__position);
return iterator(_Base::insert(__position.base(), __x), this);
}
#if __cplusplus >= 201103L
iterator
insert(const_iterator __position, _Tp&& __x)
{ return emplace(__position, std::move(__x)); }
iterator
insert(const_iterator __p, initializer_list<value_type> __l)
{
__glibcxx_check_insert(__p);
return iterator(_Base::insert(__p.base(), __l), this);
}
#endif
#if __cplusplus >= 201103L
iterator
insert(const_iterator __position, size_type __n, const _Tp& __x)
{
__glibcxx_check_insert(__position);
return iterator(_Base::insert(__position.base(), __n, __x), this);
}
#else
void
insert(iterator __position, size_type __n, const _Tp& __x)
{
__glibcxx_check_insert(__position);
_Base::insert(__position.base(), __n, __x);
}
#endif
#if __cplusplus >= 201103L
template<class _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
iterator
insert(const_iterator __position, _InputIterator __first,
_InputIterator __last)
{
typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
__glibcxx_check_insert_range(__position, __first, __last, __dist);
if (__dist.second >= __gnu_debug::__dp_sign)
return
{
_Base::insert(__position.base(),
__gnu_debug::__unsafe(__first),
__gnu_debug::__unsafe(__last)),
this
};
else
return { _Base::insert(__position.base(), __first, __last), this };
}
#else
template<class _InputIterator>
void
insert(iterator __position, _InputIterator __first,
_InputIterator __last)
{
typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
__glibcxx_check_insert_range(__position, __first, __last, __dist);
if (__dist.second >= __gnu_debug::__dp_sign)
_Base::insert(__position.base(), __gnu_debug::__unsafe(__first),
__gnu_debug::__unsafe(__last));
else
_Base::insert(__position.base(), __first, __last);
}
#endif
private:
_Base_iterator
#if __cplusplus >= 201103L
_M_erase(_Base_const_iterator __position) noexcept
#else
_M_erase(_Base_iterator __position)
#endif
{
this->_M_invalidate_if(_Equal(__position));
return _Base::erase(__position);
}
public:
iterator
#if __cplusplus >= 201103L
erase(const_iterator __position) noexcept
#else
erase(iterator __position)
#endif
{
__glibcxx_check_erase(__position);
return iterator(_M_erase(__position.base()), this);
}
iterator
#if __cplusplus >= 201103L
erase(const_iterator __first, const_iterator __last) noexcept
#else
erase(iterator __first, iterator __last)
#endif
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 151. can't currently clear() empty container
__glibcxx_check_erase_range(__first, __last);
for (_Base_const_iterator __victim = __first.base();
__victim != __last.base(); ++__victim)
{
_GLIBCXX_DEBUG_VERIFY(__victim != _Base::end(),
_M_message(__gnu_debug::__msg_valid_range)
._M_iterator(__first, "position")
._M_iterator(__last, "last"));
this->_M_invalidate_if(_Equal(__victim));
}
return iterator(_Base::erase(__first.base(), __last.base()), this);
}
void
swap(list& __x)
_GLIBCXX_NOEXCEPT_IF( noexcept(declval<_Base&>().swap(__x)) )
{
_Safe::_M_swap(__x);
_Base::swap(__x);
}
void
clear() _GLIBCXX_NOEXCEPT
{
_Base::clear();
this->_M_invalidate_all();
}
// 23.2.2.4 list operations:
void
#if __cplusplus >= 201103L
splice(const_iterator __position, list&& __x) noexcept
#else
splice(iterator __position, list& __x)
#endif
{
_GLIBCXX_DEBUG_VERIFY(std::__addressof(__x) != this,
_M_message(__gnu_debug::__msg_self_splice)
._M_sequence(*this, "this"));
this->_M_transfer_from_if(__x, _Not_equal(__x._M_base().end()));
_Base::splice(__position.base(), _GLIBCXX_MOVE(__x._M_base()));
}
#if __cplusplus >= 201103L
void
splice(const_iterator __position, list& __x) noexcept
{ splice(__position, std::move(__x)); }
#endif
void
#if __cplusplus >= 201103L
splice(const_iterator __position, list&& __x, const_iterator __i) noexcept
#else
splice(iterator __position, list& __x, iterator __i)
#endif
{
__glibcxx_check_insert(__position);
// We used to perform the splice_alloc check: not anymore, redundant
// after implementing the relevant bits of N1599.
_GLIBCXX_DEBUG_VERIFY(__i._M_dereferenceable(),
_M_message(__gnu_debug::__msg_splice_bad)
._M_iterator(__i, "__i"));
_GLIBCXX_DEBUG_VERIFY(__i._M_attached_to(std::__addressof(__x)),
_M_message(__gnu_debug::__msg_splice_other)
._M_iterator(__i, "__i")._M_sequence(__x, "__x"));
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 250. splicing invalidates iterators
this->_M_transfer_from_if(__x, _Equal(__i.base()));
_Base::splice(__position.base(), _GLIBCXX_MOVE(__x._M_base()),
__i.base());
}
#if __cplusplus >= 201103L
void
splice(const_iterator __position, list& __x, const_iterator __i) noexcept
{ splice(__position, std::move(__x), __i); }
#endif
void
#if __cplusplus >= 201103L
splice(const_iterator __position, list&& __x, const_iterator __first,
const_iterator __last) noexcept
#else
splice(iterator __position, list& __x, iterator __first,
iterator __last)
#endif
{
__glibcxx_check_insert(__position);
__glibcxx_check_valid_range(__first, __last);
_GLIBCXX_DEBUG_VERIFY(__first._M_attached_to(std::__addressof(__x)),
_M_message(__gnu_debug::__msg_splice_other)
._M_sequence(__x, "x")
._M_iterator(__first, "first"));
// We used to perform the splice_alloc check: not anymore, redundant
// after implementing the relevant bits of N1599.
for (_Base_const_iterator __tmp = __first.base();
__tmp != __last.base(); ++__tmp)
{
_GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
_M_message(__gnu_debug::__msg_valid_range)
._M_iterator(__first, "first")
._M_iterator(__last, "last"));
_GLIBCXX_DEBUG_VERIFY(std::__addressof(__x) != this
|| __tmp != __position.base(),
_M_message(__gnu_debug::__msg_splice_overlap)
._M_iterator(__tmp, "position")
._M_iterator(__first, "first")
._M_iterator(__last, "last"));
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 250. splicing invalidates iterators
this->_M_transfer_from_if(__x, _Equal(__tmp));
}
_Base::splice(__position.base(), _GLIBCXX_MOVE(__x._M_base()),
__first.base(), __last.base());
}
#if __cplusplus >= 201103L
void
splice(const_iterator __position, list& __x,
const_iterator __first, const_iterator __last) noexcept
{ splice(__position, std::move(__x), __first, __last); }
#endif
void
remove(const _Tp& __value)
{
for (_Base_iterator __x = _Base::begin(); __x != _Base::end(); )
{
if (*__x == __value)
__x = _M_erase(__x);
else
++__x;
}
}
template<class _Predicate>
void
remove_if(_Predicate __pred)
{
for (_Base_iterator __x = _Base::begin(); __x != _Base::end(); )
{
if (__pred(*__x))
__x = _M_erase(__x);
else
++__x;
}
}
void
unique()
{
_Base_iterator __first = _Base::begin();
_Base_iterator __last = _Base::end();
if (__first == __last)
return;
_Base_iterator __next = __first; ++__next;
while (__next != __last)
{
if (*__first == *__next)
__next = _M_erase(__next);
else
__first = __next++;
}
}
template<class _BinaryPredicate>
void
unique(_BinaryPredicate __binary_pred)
{
_Base_iterator __first = _Base::begin();
_Base_iterator __last = _Base::end();
if (__first == __last)
return;
_Base_iterator __next = __first; ++__next;
while (__next != __last)
{
if (__binary_pred(*__first, *__next))
__next = _M_erase(__next);
else
__first = __next++;
}
}
void
#if __cplusplus >= 201103L
merge(list&& __x)
#else
merge(list& __x)
#endif
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 300. list::merge() specification incomplete
if (this != std::__addressof(__x))
{
__glibcxx_check_sorted(_Base::begin(), _Base::end());
__glibcxx_check_sorted(__x.begin().base(), __x.end().base());
this->_M_transfer_from_if(__x, _Not_equal(__x._M_base().end()));
_Base::merge(_GLIBCXX_MOVE(__x._M_base()));
}
}
#if __cplusplus >= 201103L
void
merge(list& __x)
{ merge(std::move(__x)); }
#endif
template<class _Compare>
void
#if __cplusplus >= 201103L
merge(list&& __x, _Compare __comp)
#else
merge(list& __x, _Compare __comp)
#endif
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 300. list::merge() specification incomplete
if (this != std::__addressof(__x))
{
__glibcxx_check_sorted_pred(_Base::begin(), _Base::end(),
__comp);
__glibcxx_check_sorted_pred(__x.begin().base(), __x.end().base(),
__comp);
this->_M_transfer_from_if(__x, _Not_equal(__x._M_base().end()));
_Base::merge(_GLIBCXX_MOVE(__x._M_base()), __comp);
}
}
#if __cplusplus >= 201103L
template<typename _Compare>
void
merge(list& __x, _Compare __comp)
{ merge(std::move(__x), __comp); }
#endif
void
sort() { _Base::sort(); }
template<typename _StrictWeakOrdering>
void
sort(_StrictWeakOrdering __pred) { _Base::sort(__pred); }
using _Base::reverse;
_Base&
_M_base() _GLIBCXX_NOEXCEPT { return *this; }
const _Base&
_M_base() const _GLIBCXX_NOEXCEPT { return *this; }
};
template<typename _Tp, typename _Alloc>
inline bool
operator==(const list<_Tp, _Alloc>& __lhs,
const list<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() == __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator!=(const list<_Tp, _Alloc>& __lhs,
const list<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() != __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator<(const list<_Tp, _Alloc>& __lhs,
const list<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() < __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator<=(const list<_Tp, _Alloc>& __lhs,
const list<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() <= __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator>=(const list<_Tp, _Alloc>& __lhs,
const list<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() >= __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator>(const list<_Tp, _Alloc>& __lhs,
const list<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() > __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline void
swap(list<_Tp, _Alloc>& __lhs, list<_Tp, _Alloc>& __rhs)
_GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs)))
{ __lhs.swap(__rhs); }
} // namespace __debug
} // namespace std
namespace __gnu_debug
{
#ifndef _GLIBCXX_USE_CXX11_ABI
// If not using C++11 list::size() is not in O(1) so we do not use it.
template<typename _Tp, typename _Alloc>
struct _Sequence_traits<std::__debug::list<_Tp, _Alloc> >
{
typedef typename std::__debug::list<_Tp, _Alloc>::iterator _It;
static typename _Distance_traits<_It>::__type
_S_size(const std::__debug::list<_Tp, _Alloc>& __seq)
{
return __seq.empty()
? std::make_pair(0, __dp_exact) : std::make_pair(1, __dp_equality);
}
};
#endif
#ifndef _GLIBCXX_DEBUG_PEDANTIC
template<class _Tp, class _Alloc>
struct _Insert_range_from_self_is_safe<std::__debug::list<_Tp, _Alloc> >
{ enum { __value = 1 }; };
#endif
}
#endif