← Back
Editing: list
// Debugging list implementation -*- C++ -*- // Copyright (C) 2003-2018 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; } }; #if __cpp_deduction_guides >= 201606 template<typename _InputIterator, typename _ValT = typename iterator_traits<_InputIterator>::value_type, typename _Allocator = allocator<_ValT>, typename = _RequireInputIter<_InputIterator>, typename = _RequireAllocator<_Allocator>> list(_InputIterator, _InputIterator, _Allocator = _Allocator()) -> list<_ValT, _Allocator>; #endif 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
Save File
Cancel