// Debugging deque implementation -*- C++ -*- // Copyright (C) 2003-2022 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 // . /** @file debug/deque * This file is a GNU debug extension to the Standard C++ Library. */ #ifndef _GLIBCXX_DEBUG_DEQUE #define _GLIBCXX_DEBUG_DEQUE 1 #pragma GCC system_header #include namespace std _GLIBCXX_VISIBILITY(default) { namespace __debug { template class deque; } } // namespace std::__debug #include #include #include #include namespace std _GLIBCXX_VISIBILITY(default) { namespace __debug { /// Class std::deque with safety/checking/debug instrumentation. template > class deque : public __gnu_debug::_Safe_container< deque<_Tp, _Allocator>, _Allocator, __gnu_debug::_Safe_sequence>, public _GLIBCXX_STD_C::deque<_Tp, _Allocator> { typedef _GLIBCXX_STD_C::deque<_Tp, _Allocator> _Base; typedef __gnu_debug::_Safe_container< deque, _Allocator, __gnu_debug::_Safe_sequence> _Safe; typedef typename _Base::const_iterator _Base_const_iterator; typedef typename _Base::iterator _Base_iterator; typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal; template friend class ::__gnu_debug::_Safe_iterator; // Reference wrapper for base class. Disambiguates deque(const _Base&) // from copy constructor by requiring a user-defined conversion. // See PR libstdc++/90102. struct _Base_ref { _Base_ref(const _Base& __r) : _M_ref(__r) { } const _Base& _M_ref; }; public: typedef typename _Base::reference reference; typedef typename _Base::const_reference const_reference; typedef __gnu_debug::_Safe_iterator<_Base_iterator, deque> iterator; typedef __gnu_debug::_Safe_iterator<_Base_const_iterator, deque> 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 reverse_iterator; typedef std::reverse_iterator const_reverse_iterator; // 23.2.1.1 construct/copy/destroy: #if __cplusplus < 201103L deque() : _Base() { } deque(const deque& __x) : _Base(__x) { } ~deque() { } #else deque() = default; deque(const deque&) = default; deque(deque&&) = default; deque(const deque& __d, const __type_identity_t<_Allocator>& __a) : _Base(__d, __a) { } deque(deque&& __d, const __type_identity_t<_Allocator>& __a) : _Safe(std::move(__d)), _Base(std::move(__d), __a) { } deque(initializer_list __l, const allocator_type& __a = allocator_type()) : _Base(__l, __a) { } ~deque() = default; #endif explicit deque(const _Allocator& __a) : _Base(__a) { } #if __cplusplus >= 201103L explicit deque(size_type __n, const _Allocator& __a = _Allocator()) : _Base(__n, __a) { } deque(size_type __n, const __type_identity_t<_Tp>& __value, const _Allocator& __a = _Allocator()) : _Base(__n, __value, __a) { } #else explicit deque(size_type __n, const _Tp& __value = _Tp(), const _Allocator& __a = _Allocator()) : _Base(__n, __value, __a) { } #endif #if __cplusplus >= 201103L template> #else template #endif deque(_InputIterator __first, _InputIterator __last, const _Allocator& __a = _Allocator()) : _Base(__gnu_debug::__base( __glibcxx_check_valid_constructor_range(__first, __last)), __gnu_debug::__base(__last), __a) { } deque(_Base_ref __x) : _Base(__x._M_ref) { } #if __cplusplus >= 201103L deque& operator=(const deque&) = default; deque& operator=(deque&&) = default; deque& operator=(initializer_list __l) { _Base::operator=(__l); this->_M_invalidate_all(); return *this; } #endif #if __cplusplus >= 201103L template> #else template #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(); } #if __cplusplus >= 201103L void assign(initializer_list __l) { _Base::assign(__l); this->_M_invalidate_all(); } #endif using _Base::get_allocator; // iterators: _GLIBCXX_NODISCARD iterator begin() _GLIBCXX_NOEXCEPT { return iterator(_Base::begin(), this); } _GLIBCXX_NODISCARD const_iterator begin() const _GLIBCXX_NOEXCEPT { return const_iterator(_Base::begin(), this); } _GLIBCXX_NODISCARD iterator end() _GLIBCXX_NOEXCEPT { return iterator(_Base::end(), this); } _GLIBCXX_NODISCARD const_iterator end() const _GLIBCXX_NOEXCEPT { return const_iterator(_Base::end(), this); } _GLIBCXX_NODISCARD reverse_iterator rbegin() _GLIBCXX_NOEXCEPT { return reverse_iterator(end()); } _GLIBCXX_NODISCARD const_reverse_iterator rbegin() const _GLIBCXX_NOEXCEPT { return const_reverse_iterator(end()); } _GLIBCXX_NODISCARD reverse_iterator rend() _GLIBCXX_NOEXCEPT { return reverse_iterator(begin()); } _GLIBCXX_NODISCARD const_reverse_iterator rend() const _GLIBCXX_NOEXCEPT { return const_reverse_iterator(begin()); } #if __cplusplus >= 201103L [[__nodiscard__]] const_iterator cbegin() const noexcept { return const_iterator(_Base::begin(), this); } [[__nodiscard__]] const_iterator cend() const noexcept { return const_iterator(_Base::end(), this); } [[__nodiscard__]] const_reverse_iterator crbegin() const noexcept { return const_reverse_iterator(end()); } [[__nodiscard__]] const_reverse_iterator crend() const noexcept { return const_reverse_iterator(begin()); } #endif private: void _M_invalidate_after_nth(difference_type __n) { typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth; this->_M_invalidate_if(_After_nth(__n, _Base::begin())); } public: // 23.2.1.2 capacity: using _Base::size; using _Base::max_size; #if __cplusplus >= 201103L void resize(size_type __sz) { bool __invalidate_all = __sz > this->size(); if (__sz < this->size()) this->_M_invalidate_after_nth(__sz); _Base::resize(__sz); if (__invalidate_all) this->_M_invalidate_all(); } void resize(size_type __sz, const _Tp& __c) { bool __invalidate_all = __sz > this->size(); if (__sz < this->size()) this->_M_invalidate_after_nth(__sz); _Base::resize(__sz, __c); if (__invalidate_all) this->_M_invalidate_all(); } #else void resize(size_type __sz, _Tp __c = _Tp()) { bool __invalidate_all = __sz > this->size(); if (__sz < this->size()) this->_M_invalidate_after_nth(__sz); _Base::resize(__sz, __c); if (__invalidate_all) this->_M_invalidate_all(); } #endif #if __cplusplus >= 201103L void shrink_to_fit() noexcept { if (_Base::_M_shrink_to_fit()) this->_M_invalidate_all(); } #endif using _Base::empty; // element access: _GLIBCXX_NODISCARD reference operator[](size_type __n) _GLIBCXX_NOEXCEPT { __glibcxx_check_subscript(__n); return _Base::operator[](__n); } _GLIBCXX_NODISCARD const_reference operator[](size_type __n) const _GLIBCXX_NOEXCEPT { __glibcxx_check_subscript(__n); return _Base::operator[](__n); } using _Base::at; _GLIBCXX_NODISCARD reference front() _GLIBCXX_NOEXCEPT { __glibcxx_check_nonempty(); return _Base::front(); } _GLIBCXX_NODISCARD const_reference front() const _GLIBCXX_NOEXCEPT { __glibcxx_check_nonempty(); return _Base::front(); } _GLIBCXX_NODISCARD reference back() _GLIBCXX_NOEXCEPT { __glibcxx_check_nonempty(); return _Base::back(); } _GLIBCXX_NODISCARD const_reference back() const _GLIBCXX_NOEXCEPT { __glibcxx_check_nonempty(); return _Base::back(); } // 23.2.1.3 modifiers: void push_front(const _Tp& __x) { _Base::push_front(__x); this->_M_invalidate_all(); } void push_back(const _Tp& __x) { _Base::push_back(__x); this->_M_invalidate_all(); } #if __cplusplus >= 201103L void push_front(_Tp&& __x) { emplace_front(std::move(__x)); } void push_back(_Tp&& __x) { emplace_back(std::move(__x)); } template #if __cplusplus > 201402L reference #else void #endif emplace_front(_Args&&... __args) { _Base::emplace_front(std::forward<_Args>(__args)...); this->_M_invalidate_all(); #if __cplusplus > 201402L return front(); #endif } template #if __cplusplus > 201402L reference #else void #endif emplace_back(_Args&&... __args) { _Base::emplace_back(std::forward<_Args>(__args)...); this->_M_invalidate_all(); #if __cplusplus > 201402L return back(); #endif } template iterator emplace(const_iterator __position, _Args&&... __args) { __glibcxx_check_insert(__position); _Base_iterator __res = _Base::emplace(__position.base(), std::forward<_Args>(__args)...); this->_M_invalidate_all(); return iterator(__res, 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); _Base_iterator __res = _Base::insert(__position.base(), __x); this->_M_invalidate_all(); return iterator(__res, this); } #if __cplusplus >= 201103L iterator insert(const_iterator __position, _Tp&& __x) { return emplace(__position, std::move(__x)); } iterator insert(const_iterator __position, initializer_list __l) { __glibcxx_check_insert(__position); _Base_iterator __res = _Base::insert(__position.base(), __l); this->_M_invalidate_all(); return iterator(__res, this); } #endif #if __cplusplus >= 201103L iterator insert(const_iterator __position, size_type __n, const _Tp& __x) { __glibcxx_check_insert(__position); _Base_iterator __res = _Base::insert(__position.base(), __n, __x); this->_M_invalidate_all(); return iterator(__res, this); } #else void insert(iterator __position, size_type __n, const _Tp& __x) { __glibcxx_check_insert(__position); _Base::insert(__position.base(), __n, __x); this->_M_invalidate_all(); } #endif #if __cplusplus >= 201103L template> 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); _Base_iterator __res; if (__dist.second >= __gnu_debug::__dp_sign) __res = _Base::insert(__position.base(), __gnu_debug::__unsafe(__first), __gnu_debug::__unsafe(__last)); else __res = _Base::insert(__position.base(), __first, __last); this->_M_invalidate_all(); return iterator(__res, this); } #else template 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); this->_M_invalidate_all(); } #endif void pop_front() _GLIBCXX_NOEXCEPT { __glibcxx_check_nonempty(); this->_M_invalidate_if(_Equal(_Base::begin())); _Base::pop_front(); } void pop_back() _GLIBCXX_NOEXCEPT { __glibcxx_check_nonempty(); this->_M_invalidate_if(_Equal(--_Base::end())); _Base::pop_back(); } iterator #if __cplusplus >= 201103L erase(const_iterator __position) #else erase(iterator __position) #endif { __glibcxx_check_erase(__position); #if __cplusplus >= 201103L _Base_const_iterator __victim = __position.base(); #else _Base_iterator __victim = __position.base(); #endif if (__victim == _Base::begin() || __victim == _Base::end() - 1) { this->_M_invalidate_if(_Equal(__victim)); return iterator(_Base::erase(__victim), this); } else { _Base_iterator __res = _Base::erase(__victim); this->_M_invalidate_all(); return iterator(__res, this); } } iterator #if __cplusplus >= 201103L erase(const_iterator __first, const_iterator __last) #else erase(iterator __first, iterator __last) #endif { // _GLIBCXX_RESOLVE_LIB_DEFECTS // 151. can't currently clear() empty container __glibcxx_check_erase_range(__first, __last); if (__first.base() == __last.base()) #if __cplusplus >= 201103L return iterator(__first.base()._M_const_cast(), this); #else return __first; #endif else if (__first.base() == _Base::begin() || __last.base() == _Base::end()) { this->_M_detach_singular(); for (_Base_const_iterator __position = __first.base(); __position != __last.base(); ++__position) { this->_M_invalidate_if(_Equal(__position)); } __try { return iterator(_Base::erase(__first.base(), __last.base()), this); } __catch(...) { this->_M_revalidate_singular(); __throw_exception_again; } } else { _Base_iterator __res = _Base::erase(__first.base(), __last.base()); this->_M_invalidate_all(); return iterator(__res, this); } } void swap(deque& __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(); } _Base& _M_base() _GLIBCXX_NOEXCEPT { return *this; } const _Base& _M_base() const _GLIBCXX_NOEXCEPT { return *this; } }; #if __cpp_deduction_guides >= 201606 template::value_type, typename _Allocator = allocator<_ValT>, typename = _RequireInputIter<_InputIterator>, typename = _RequireAllocator<_Allocator>> deque(_InputIterator, _InputIterator, _Allocator = _Allocator()) -> deque<_ValT, _Allocator>; template, typename = _RequireAllocator<_Allocator>> deque(size_t, _Tp, _Allocator = _Allocator()) -> deque<_Tp, _Allocator>; #endif template inline bool operator==(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs) { return __lhs._M_base() == __rhs._M_base(); } #if __cpp_lib_three_way_comparison template constexpr __detail::__synth3way_t<_Tp> operator<=>(const deque<_Tp, _Alloc>& __x, const deque<_Tp, _Alloc>& __y) { return __x._M_base() <=> __y._M_base(); } #else template inline bool operator!=(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs) { return __lhs._M_base() != __rhs._M_base(); } template inline bool operator<(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs) { return __lhs._M_base() < __rhs._M_base(); } template inline bool operator<=(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs) { return __lhs._M_base() <= __rhs._M_base(); } template inline bool operator>=(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs) { return __lhs._M_base() >= __rhs._M_base(); } template inline bool operator>(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs) { return __lhs._M_base() > __rhs._M_base(); } #endif // three-way comparison template inline void swap(deque<_Tp, _Alloc>& __lhs, deque<_Tp, _Alloc>& __rhs) _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs))) { __lhs.swap(__rhs); } } // namespace __debug } // namespace std #endif