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Edit File : stl_bvector.h \| Size : 32.94 KB
// vector<bool> specialization -- C++ -- // Copyright (C) 2001-2018 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/>. /* * * Copyright (c) 1994 * Hewlett-Packard Company * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Hewlett-Packard Company makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. * * * Copyright (c) 1996-1999 * Silicon Graphics Computer Systems, Inc. * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Silicon Graphics makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. / /* @file bits/stl_bvector.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{vector} / #ifndef _STL_BVECTOR_H #define _STL_BVECTOR_H 1 #if __cplusplus >= 201103L #include <initializer_list> #include <bits/functional_hash.h> #endif namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION _GLIBCXX_BEGIN_NAMESPACE_CONTAINER typedef unsigned long _Bit_type; enum { _S_word_bit = int(__CHAR_BIT__ sizeof(_Bit_type)) }; struct _Bit_reference { _Bit_type * _M_p; _Bit_type _M_mask; _Bit_reference(_Bit_type * __x, _Bit_type __y) : _M_p(__x), _M_mask(__y) { } _Bit_reference() _GLIBCXX_NOEXCEPT : _M_p(0), _M_mask(0) { } operator bool() const _GLIBCXX_NOEXCEPT { return !!(_M_p & _M_mask); } _Bit_reference& operator=(bool __x) _GLIBCXX_NOEXCEPT { if (__x) _M_p \|= _M_mask; else _M_p &= ~_M_mask; return this; } _Bit_reference& operator=(const _Bit_reference& __x) _GLIBCXX_NOEXCEPT { return this = bool(__x); } bool operator==(const _Bit_reference& __x) const { return bool(this) == bool(__x); } bool operator<(const _Bit_reference& __x) const { return !bool(this) && bool(__x); } void flip() _GLIBCXX_NOEXCEPT { _M_p ^= _M_mask; } }; #if __cplusplus >= 201103L inline void swap(_Bit_reference __x, _Bit_reference __y) noexcept { bool __tmp = __x; __x = __y; __y = __tmp; } inline void swap(_Bit_reference __x, bool& __y) noexcept { bool __tmp = __x; __x = __y; __y = __tmp; } inline void swap(bool& __x, _Bit_reference __y) noexcept { bool __tmp = __x; __x = __y; __y = __tmp; } #endif struct _Bit_iterator_base : public std::iterator<std::random_access_iterator_tag, bool> { _Bit_type * _M_p; unsigned int _M_offset; _Bit_iterator_base(_Bit_type * __x, unsigned int __y) : _M_p(__x), _M_offset(__y) { } void _M_bump_up() { if (_M_offset++ == int(_S_word_bit) - 1) { _M_offset = 0; ++_M_p; } } void _M_bump_down() { if (_M_offset-- == 0) { _M_offset = int(_S_word_bit) - 1; --_M_p; } } void _M_incr(ptrdiff_t __i) { difference_type __n = __i + _M_offset; _M_p += __n / int(_S_word_bit); __n = __n % int(_S_word_bit); if (__n < 0) { __n += int(_S_word_bit); --_M_p; } _M_offset = static_cast<unsigned int>(__n); } bool operator==(const _Bit_iterator_base& __i) const { return _M_p == __i._M_p && _M_offset == __i._M_offset; } bool operator<(const _Bit_iterator_base& __i) const { return _M_p < __i._M_p \|\| (_M_p == __i._M_p && _M_offset < __i._M_offset); } bool operator!=(const _Bit_iterator_base& __i) const { return !(this == __i); } bool operator>(const _Bit_iterator_base& __i) const { return __i < this; } bool operator<=(const _Bit_iterator_base& __i) const { return !(__i < this); } bool operator>=(const _Bit_iterator_base& __i) const { return !(this < __i); } }; inline ptrdiff_t operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y) { return (int(_S_word_bit) * (__x._M_p - __y._M_p) + __x._M_offset - __y._M_offset); } struct _Bit_iterator : public _Bit_iterator_base { typedef _Bit_reference reference; typedef _Bit_reference* pointer; typedef _Bit_iterator iterator; _Bit_iterator() : _Bit_iterator_base(0, 0) { } _Bit_iterator(_Bit_type * __x, unsigned int __y) : _Bit_iterator_base(__x, __y) { } iterator _M_const_cast() const { return this; } reference operator() const { return reference(_M_p, 1UL << _M_offset); } iterator& operator++() { _M_bump_up(); return this; } iterator operator++(int) { iterator __tmp = this; _M_bump_up(); return __tmp; } iterator& operator--() { _M_bump_down(); return this; } iterator operator--(int) { iterator __tmp = this; _M_bump_down(); return __tmp; } iterator& operator+=(difference_type __i) { _M_incr(__i); return this; } iterator& operator-=(difference_type __i) { this += -__i; return this; } iterator operator+(difference_type __i) const { iterator __tmp = this; return __tmp += __i; } iterator operator-(difference_type __i) const { iterator __tmp = this; return __tmp -= __i; } reference operator[](difference_type __i) const { return (this + __i); } }; inline _Bit_iterator operator+(ptrdiff_t __n, const _Bit_iterator& __x) { return __x + __n; } struct _Bit_const_iterator : public _Bit_iterator_base { typedef bool reference; typedef bool const_reference; typedef const bool pointer; typedef _Bit_const_iterator const_iterator; _Bit_const_iterator() : _Bit_iterator_base(0, 0) { } _Bit_const_iterator(_Bit_type * __x, unsigned int __y) : _Bit_iterator_base(__x, __y) { } _Bit_const_iterator(const _Bit_iterator& __x) : _Bit_iterator_base(__x._M_p, __x._M_offset) { } _Bit_iterator _M_const_cast() const { return _Bit_iterator(_M_p, _M_offset); } const_reference operator() const { return _Bit_reference(_M_p, 1UL << _M_offset); } const_iterator& operator++() { _M_bump_up(); return this; } const_iterator operator++(int) { const_iterator __tmp = this; _M_bump_up(); return __tmp; } const_iterator& operator--() { _M_bump_down(); return this; } const_iterator operator--(int) { const_iterator __tmp = this; _M_bump_down(); return __tmp; } const_iterator& operator+=(difference_type __i) { _M_incr(__i); return this; } const_iterator& operator-=(difference_type __i) { this += -__i; return this; } const_iterator operator+(difference_type __i) const { const_iterator __tmp = this; return __tmp += __i; } const_iterator operator-(difference_type __i) const { const_iterator __tmp = this; return __tmp -= __i; } const_reference operator[](difference_type __i) const { return (this + __i); } }; inline _Bit_const_iterator operator+(ptrdiff_t __n, const _Bit_const_iterator& __x) { return __x + __n; } inline void __fill_bvector(_Bit_type * __v, unsigned int __first, unsigned int __last, bool __x) { const _Bit_type __fmask = ~0ul << __first; const _Bit_type __lmask = ~0ul >> (_S_word_bit - __last); const _Bit_type __mask = __fmask & __lmask; if (__x) __v \|= __mask; else __v &= ~__mask; } inline void fill(_Bit_iterator __first, _Bit_iterator __last, const bool& __x) { if (__first._M_p != __last._M_p) { _Bit_type* __first_p = __first._M_p; if (__first._M_offset != 0) __fill_bvector(__first_p++, __first._M_offset, _S_word_bit, __x); __builtin_memset(__first_p, __x ? ~0 : 0, (__last._M_p - __first_p) * sizeof(_Bit_type)); if (__last._M_offset != 0) __fill_bvector(__last._M_p, 0, __last._M_offset, __x); } else if (__first._M_offset != __last._M_offset) __fill_bvector(__first._M_p, __first._M_offset, __last._M_offset, __x); } template<typename _Alloc> struct _Bvector_base { typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template rebind<_Bit_type>::other _Bit_alloc_type; typedef typename __gnu_cxx::__alloc_traits<_Bit_alloc_type> _Bit_alloc_traits; typedef typename _Bit_alloc_traits::pointer _Bit_pointer; struct _Bvector_impl_data { _Bit_iterator _M_start; _Bit_iterator _M_finish; _Bit_pointer _M_end_of_storage; _Bvector_impl_data() _GLIBCXX_NOEXCEPT : _M_start(), _M_finish(), _M_end_of_storage() { } #if __cplusplus >= 201103L _Bvector_impl_data(_Bvector_impl_data&& __x) noexcept : _M_start(__x._M_start), _M_finish(__x._M_finish) , _M_end_of_storage(__x._M_end_of_storage) { __x._M_reset(); } void _M_move_data(_Bvector_impl_data&& __x) noexcept { this->_M_start = __x._M_start; this->_M_finish = __x._M_finish; this->_M_end_of_storage = __x._M_end_of_storage; __x._M_reset(); } #endif void _M_reset() _GLIBCXX_NOEXCEPT { _M_start = _M_finish = _Bit_iterator(); _M_end_of_storage = _Bit_pointer(); } }; struct _Bvector_impl : public _Bit_alloc_type, public _Bvector_impl_data { public: _Bvector_impl() _GLIBCXX_NOEXCEPT_IF( is_nothrow_default_constructible<_Bit_alloc_type>::value) : _Bit_alloc_type() { } _Bvector_impl(const _Bit_alloc_type& __a) _GLIBCXX_NOEXCEPT : _Bit_alloc_type(__a) { } #if __cplusplus >= 201103L _Bvector_impl(_Bvector_impl&&) = default; #endif _Bit_type* _M_end_addr() const _GLIBCXX_NOEXCEPT { if (this->_M_end_of_storage) return std::__addressof(this->_M_end_of_storage[-1]) + 1; return 0; } }; public: typedef _Alloc allocator_type; _Bit_alloc_type& _M_get_Bit_allocator() _GLIBCXX_NOEXCEPT { return this->_M_impl; } const _Bit_alloc_type& _M_get_Bit_allocator() const _GLIBCXX_NOEXCEPT { return this->_M_impl; } allocator_type get_allocator() const _GLIBCXX_NOEXCEPT { return allocator_type(_M_get_Bit_allocator()); } #if __cplusplus >= 201103L _Bvector_base() = default; #else _Bvector_base() { } #endif _Bvector_base(const allocator_type& __a) : _M_impl(__a) { } #if __cplusplus >= 201103L _Bvector_base(_Bvector_base&&) = default; #endif ~_Bvector_base() { this->_M_deallocate(); } protected: _Bvector_impl _M_impl; _Bit_pointer _M_allocate(size_t __n) { return _Bit_alloc_traits::allocate(_M_impl, _S_nword(__n)); } void _M_deallocate() { if (_M_impl._M_start._M_p) { const size_t __n = _M_impl._M_end_addr() - _M_impl._M_start._M_p; _Bit_alloc_traits::deallocate(_M_impl, _M_impl._M_end_of_storage - __n, __n); _M_impl._M_reset(); } } #if __cplusplus >= 201103L void _M_move_data(_Bvector_base&& __x) noexcept { _M_impl._M_move_data(std::move(__x._M_impl)); } #endif static size_t _S_nword(size_t __n) { return (__n + int(_S_word_bit) - 1) / int(_S_word_bit); } }; _GLIBCXX_END_NAMESPACE_CONTAINER _GLIBCXX_END_NAMESPACE_VERSION } // namespace std // Declare a partial specialization of vector<T, Alloc>. #include <bits/stl_vector.h> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION _GLIBCXX_BEGIN_NAMESPACE_CONTAINER /** * @brief A specialization of vector for booleans which offers fixed time * access to individual elements in any order. * * @ingroup sequences * * @tparam _Alloc Allocator type. * * Note that vector<bool> does not actually meet the requirements for being * a container. This is because the reference and pointer types are not * really references and pointers to bool. See DR96 for details. @see * vector for function documentation. * * In some terminology a %vector can be described as a dynamic * C-style array, it offers fast and efficient access to individual * elements in any order and saves the user from worrying about * memory and size allocation. Subscripting ( @c [] ) access is * also provided as with C-style arrays. / template<typename _Alloc> class vector<bool, _Alloc> : protected _Bvector_base<_Alloc> { typedef _Bvector_base<_Alloc> _Base; typedef typename _Base::_Bit_pointer _Bit_pointer; typedef typename _Base::_Bit_alloc_traits _Bit_alloc_traits; #if __cplusplus >= 201103L friend struct std::hash<vector>; #endif public: typedef bool value_type; typedef size_t size_type; typedef ptrdiff_t difference_type; typedef _Bit_reference reference; typedef bool const_reference; typedef _Bit_reference pointer; typedef const bool* const_pointer; typedef _Bit_iterator iterator; typedef _Bit_const_iterator const_iterator; typedef std::reverse_iterator<const_iterator> const_reverse_iterator; typedef std::reverse_iterator<iterator> reverse_iterator; typedef _Alloc allocator_type; allocator_type get_allocator() const { return _Base::get_allocator(); } protected: using _Base::_M_allocate; using _Base::_M_deallocate; using _Base::_S_nword; using _Base::_M_get_Bit_allocator; public: #if __cplusplus >= 201103L vector() = default; #else vector() { } #endif explicit vector(const allocator_type& __a) : _Base(__a) { } #if __cplusplus >= 201103L explicit vector(size_type __n, const allocator_type& __a = allocator_type()) : vector(__n, false, __a) { } vector(size_type __n, const bool& __value, const allocator_type& __a = allocator_type()) #else explicit vector(size_type __n, const bool& __value = bool(), const allocator_type& __a = allocator_type()) #endif : _Base(__a) { _M_initialize(__n); _M_initialize_value(__value); } vector(const vector& __x) : _Base(_Bit_alloc_traits::_S_select_on_copy(__x._M_get_Bit_allocator())) { _M_initialize(__x.size()); _M_copy_aligned(__x.begin(), __x.end(), this->_M_impl._M_start); } #if __cplusplus >= 201103L vector(vector&&) = default; vector(vector&& __x, const allocator_type& __a) noexcept(_Bit_alloc_traits::_S_always_equal()) : _Base(__a) { if (__x.get_allocator() == __a) this->_M_move_data(std::move(__x)); else { _M_initialize(__x.size()); _M_copy_aligned(__x.begin(), __x.end(), begin()); __x.clear(); } } vector(const vector& __x, const allocator_type& __a) : _Base(__a) { _M_initialize(__x.size()); _M_copy_aligned(__x.begin(), __x.end(), this->_M_impl._M_start); } vector(initializer_list<bool> __l, const allocator_type& __a = allocator_type()) : _Base(__a) { _M_initialize_range(__l.begin(), __l.end(), random_access_iterator_tag()); } #endif #if __cplusplus >= 201103L template<typename _InputIterator, typename = std::_RequireInputIter<_InputIterator>> vector(_InputIterator __first, _InputIterator __last, const allocator_type& __a = allocator_type()) : _Base(__a) { _M_initialize_dispatch(__first, __last, __false_type()); } #else template<typename _InputIterator> vector(_InputIterator __first, _InputIterator __last, const allocator_type& __a = allocator_type()) : _Base(__a) { typedef typename std::__is_integer<_InputIterator>::__type _Integral; _M_initialize_dispatch(__first, __last, _Integral()); } #endif ~vector() _GLIBCXX_NOEXCEPT { } vector& operator=(const vector& __x) { if (&__x == this) return this; #if __cplusplus >= 201103L if (_Bit_alloc_traits::_S_propagate_on_copy_assign()) { if (this->_M_get_Bit_allocator() != __x._M_get_Bit_allocator()) { this->_M_deallocate(); std::__alloc_on_copy(_M_get_Bit_allocator(), __x._M_get_Bit_allocator()); _M_initialize(__x.size()); } else std::__alloc_on_copy(_M_get_Bit_allocator(), __x._M_get_Bit_allocator()); } #endif if (__x.size() > capacity()) { this->_M_deallocate(); _M_initialize(__x.size()); } this->_M_impl._M_finish = _M_copy_aligned(__x.begin(), __x.end(), begin()); return this; } #if __cplusplus >= 201103L vector& operator=(vector&& __x) noexcept(_Bit_alloc_traits::_S_nothrow_move()) { if (_Bit_alloc_traits::_S_propagate_on_move_assign() \|\| this->_M_get_Bit_allocator() == __x._M_get_Bit_allocator()) { this->_M_deallocate(); this->_M_move_data(std::move(__x)); std::__alloc_on_move(_M_get_Bit_allocator(), __x._M_get_Bit_allocator()); } else { if (__x.size() > capacity()) { this->_M_deallocate(); _M_initialize(__x.size()); } this->_M_impl._M_finish = _M_copy_aligned(__x.begin(), __x.end(), begin()); __x.clear(); } return this; } vector& operator=(initializer_list<bool> __l) { this->assign (__l.begin(), __l.end()); return this; } #endif // assign(), a generalized assignment member function. Two // versions: one that takes a count, and one that takes a range. // The range version is a member template, so we dispatch on whether // or not the type is an integer. void assign(size_type __n, const bool& __x) { _M_fill_assign(__n, __x); } #if __cplusplus >= 201103L template<typename _InputIterator, typename = std::_RequireInputIter<_InputIterator>> void assign(_InputIterator __first, _InputIterator __last) { _M_assign_aux(__first, __last, std::__iterator_category(__first)); } #else template<typename _InputIterator> void assign(_InputIterator __first, _InputIterator __last) { typedef typename std::__is_integer<_InputIterator>::__type _Integral; _M_assign_dispatch(__first, __last, _Integral()); } #endif #if __cplusplus >= 201103L void assign(initializer_list<bool> __l) { _M_assign_aux(__l.begin(), __l.end(), random_access_iterator_tag()); } #endif iterator begin() _GLIBCXX_NOEXCEPT { return this->_M_impl._M_start; } const_iterator begin() const _GLIBCXX_NOEXCEPT { return this->_M_impl._M_start; } iterator end() _GLIBCXX_NOEXCEPT { return this->_M_impl._M_finish; } const_iterator end() const _GLIBCXX_NOEXCEPT { return this->_M_impl._M_finish; } 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 this->_M_impl._M_start; } const_iterator cend() const noexcept { return this->_M_impl._M_finish; } const_reverse_iterator crbegin() const noexcept { return const_reverse_iterator(end()); } const_reverse_iterator crend() const noexcept { return const_reverse_iterator(begin()); } #endif size_type size() const _GLIBCXX_NOEXCEPT { return size_type(end() - begin()); } size_type max_size() const _GLIBCXX_NOEXCEPT { const size_type __isize = __gnu_cxx::__numeric_traits<difference_type>::__max - int(_S_word_bit) + 1; const size_type __asize = _Bit_alloc_traits::max_size(_M_get_Bit_allocator()); return (__asize <= __isize / int(_S_word_bit) ? __asize * int(_S_word_bit) : __isize); } size_type capacity() const _GLIBCXX_NOEXCEPT { return size_type(const_iterator(this->_M_impl._M_end_addr(), 0) - begin()); } bool empty() const _GLIBCXX_NOEXCEPT { return begin() == end(); } reference operator[](size_type __n) { return iterator(this->_M_impl._M_start._M_p + __n / int(_S_word_bit), __n % int(_S_word_bit)); } const_reference operator[](size_type __n) const { return const_iterator(this->_M_impl._M_start._M_p + __n / int(_S_word_bit), __n % int(_S_word_bit)); } protected: void _M_range_check(size_type __n) const { if (__n >= this->size()) __throw_out_of_range_fmt(__N("vector<bool>::_M_range_check: __n " "(which is %zu) >= this->size() " "(which is %zu)"), __n, this->size()); } public: reference at(size_type __n) { _M_range_check(__n); return (this)[__n]; } const_reference at(size_type __n) const { _M_range_check(__n); return (this)[__n]; } void reserve(size_type __n) { if (__n > max_size()) __throw_length_error(__N("vector::reserve")); if (capacity() < __n) _M_reallocate(__n); } reference front() { return begin(); } const_reference front() const { return begin(); } reference back() { return (end() - 1); } const_reference back() const { return (end() - 1); } // _GLIBCXX_RESOLVE_LIB_DEFECTS // DR 464. Suggestion for new member functions in standard containers. // N.B. DR 464 says nothing about vector<bool> but we need something // here due to the way we are implementing DR 464 in the debug-mode // vector class. void data() _GLIBCXX_NOEXCEPT { } void push_back(bool __x) { if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr()) this->_M_impl._M_finish++ = __x; else _M_insert_aux(end(), __x); } void swap(vector& __x) _GLIBCXX_NOEXCEPT { std::swap(this->_M_impl._M_start, __x._M_impl._M_start); std::swap(this->_M_impl._M_finish, __x._M_impl._M_finish); std::swap(this->_M_impl._M_end_of_storage, __x._M_impl._M_end_of_storage); _Bit_alloc_traits::_S_on_swap(_M_get_Bit_allocator(), __x._M_get_Bit_allocator()); } // [23.2.5]/1, third-to-last entry in synopsis listing static void swap(reference __x, reference __y) _GLIBCXX_NOEXCEPT { bool __tmp = __x; __x = __y; __y = __tmp; } iterator #if __cplusplus >= 201103L insert(const_iterator __position, const bool& __x = bool()) #else insert(iterator __position, const bool& __x = bool()) #endif { const difference_type __n = __position - begin(); if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr() && __position == end()) this->_M_impl._M_finish++ = __x; else _M_insert_aux(__position._M_const_cast(), __x); return begin() + __n; } #if __cplusplus >= 201103L template<typename _InputIterator, typename = std::_RequireInputIter<_InputIterator>> iterator insert(const_iterator __position, _InputIterator __first, _InputIterator __last) { difference_type __offset = __position - cbegin(); _M_insert_dispatch(__position._M_const_cast(), __first, __last, __false_type()); return begin() + __offset; } #else template<typename _InputIterator> void insert(iterator __position, _InputIterator __first, _InputIterator __last) { typedef typename std::__is_integer<_InputIterator>::__type _Integral; _M_insert_dispatch(__position, __first, __last, _Integral()); } #endif #if __cplusplus >= 201103L iterator insert(const_iterator __position, size_type __n, const bool& __x) { difference_type __offset = __position - cbegin(); _M_fill_insert(__position._M_const_cast(), __n, __x); return begin() + __offset; } #else void insert(iterator __position, size_type __n, const bool& __x) { _M_fill_insert(__position, __n, __x); } #endif #if __cplusplus >= 201103L iterator insert(const_iterator __p, initializer_list<bool> __l) { return this->insert(__p, __l.begin(), __l.end()); } #endif void pop_back() { --this->_M_impl._M_finish; } iterator #if __cplusplus >= 201103L erase(const_iterator __position) #else erase(iterator __position) #endif { return _M_erase(__position._M_const_cast()); } iterator #if __cplusplus >= 201103L erase(const_iterator __first, const_iterator __last) #else erase(iterator __first, iterator __last) #endif { return _M_erase(__first._M_const_cast(), __last._M_const_cast()); } void resize(size_type __new_size, bool __x = bool()) { if (__new_size < size()) _M_erase_at_end(begin() + difference_type(__new_size)); else insert(end(), __new_size - size(), __x); } #if __cplusplus >= 201103L void shrink_to_fit() { _M_shrink_to_fit(); } #endif void flip() _GLIBCXX_NOEXCEPT { _Bit_type * const __end = this->_M_impl._M_end_addr(); for (_Bit_type * __p = this->_M_impl._M_start._M_p; __p != __end; ++__p) __p = ~__p; } void clear() _GLIBCXX_NOEXCEPT { _M_erase_at_end(begin()); } #if __cplusplus >= 201103L template<typename... _Args> #if __cplusplus > 201402L reference #else void #endif emplace_back(_Args&&... __args) { push_back(bool(__args...)); #if __cplusplus > 201402L return back(); #endif } template<typename... _Args> iterator emplace(const_iterator __pos, _Args&&... __args) { return insert(__pos, bool(__args...)); } #endif protected: // Precondition: __first._M_offset == 0 && __result._M_offset == 0. iterator _M_copy_aligned(const_iterator __first, const_iterator __last, iterator __result) { _Bit_type* __q = std::copy(__first._M_p, __last._M_p, __result._M_p); return std::copy(const_iterator(__last._M_p, 0), __last, iterator(__q, 0)); } void _M_initialize(size_type __n) { if (__n) { _Bit_pointer __q = this->_M_allocate(__n); this->_M_impl._M_end_of_storage = __q + _S_nword(__n); this->_M_impl._M_start = iterator(std::__addressof(__q), 0); } else { this->_M_impl._M_end_of_storage = _Bit_pointer(); this->_M_impl._M_start = iterator(0, 0); } this->_M_impl._M_finish = this->_M_impl._M_start + difference_type(__n); } void _M_initialize_value(bool __x) { if (_Bit_type __p = this->_M_impl._M_start._M_p) __builtin_memset(__p, __x ? ~0 : 0, (this->_M_impl._M_end_addr() - __p) * sizeof(_Bit_type)); } void _M_reallocate(size_type __n); #if __cplusplus >= 201103L bool _M_shrink_to_fit(); #endif // Check whether it's an integral type. If so, it's not an iterator. // _GLIBCXX_RESOLVE_LIB_DEFECTS // 438. Ambiguity in the "do the right thing" clause template<typename _Integer> void _M_initialize_dispatch(_Integer __n, _Integer __x, __true_type) { _M_initialize(static_cast<size_type>(__n)); _M_initialize_value(__x); } template<typename _InputIterator> void _M_initialize_dispatch(_InputIterator __first, _InputIterator __last, __false_type) { _M_initialize_range(__first, __last, std::__iterator_category(__first)); } template<typename _InputIterator> void _M_initialize_range(_InputIterator __first, _InputIterator __last, std::input_iterator_tag) { for (; __first != __last; ++__first) push_back(__first); } template<typename _ForwardIterator> void _M_initialize_range(_ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag) { const size_type __n = std::distance(__first, __last); _M_initialize(__n); std::copy(__first, __last, this->_M_impl._M_start); } #if __cplusplus < 201103L // _GLIBCXX_RESOLVE_LIB_DEFECTS // 438. Ambiguity in the "do the right thing" clause template<typename _Integer> void _M_assign_dispatch(_Integer __n, _Integer __val, __true_type) { _M_fill_assign(__n, __val); } template<class _InputIterator> void _M_assign_dispatch(_InputIterator __first, _InputIterator __last, __false_type) { _M_assign_aux(__first, __last, std::__iterator_category(__first)); } #endif void _M_fill_assign(size_t __n, bool __x) { if (__n > size()) { _M_initialize_value(__x); insert(end(), __n - size(), __x); } else { _M_erase_at_end(begin() + __n); _M_initialize_value(__x); } } template<typename _InputIterator> void _M_assign_aux(_InputIterator __first, _InputIterator __last, std::input_iterator_tag) { iterator __cur = begin(); for (; __first != __last && __cur != end(); ++__cur, ++__first) __cur = __first; if (__first == __last) _M_erase_at_end(__cur); else insert(end(), __first, __last); } template<typename _ForwardIterator> void _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag) { const size_type __len = std::distance(__first, __last); if (__len < size()) _M_erase_at_end(std::copy(__first, __last, begin())); else { _ForwardIterator __mid = __first; std::advance(__mid, size()); std::copy(__first, __mid, begin()); insert(end(), __mid, __last); } } // Check whether it's an integral type. If so, it's not an iterator. // _GLIBCXX_RESOLVE_LIB_DEFECTS // 438. Ambiguity in the "do the right thing" clause template<typename _Integer> void _M_insert_dispatch(iterator __pos, _Integer __n, _Integer __x, __true_type) { _M_fill_insert(__pos, __n, __x); } template<typename _InputIterator> void _M_insert_dispatch(iterator __pos, _InputIterator __first, _InputIterator __last, __false_type) { _M_insert_range(__pos, __first, __last, std::__iterator_category(__first)); } void _M_fill_insert(iterator __position, size_type __n, bool __x); template<typename _InputIterator> void _M_insert_range(iterator __pos, _InputIterator __first, _InputIterator __last, std::input_iterator_tag) { for (; __first != __last; ++__first) { __pos = insert(__pos, __first); ++__pos; } } template<typename _ForwardIterator> void _M_insert_range(iterator __position, _ForwardIterator __first, _ForwardIterator __last, std::forward_iterator_tag); void _M_insert_aux(iterator __position, bool __x); size_type _M_check_len(size_type __n, const char* __s) const { if (max_size() - size() < __n) __throw_length_error(__N(__s)); const size_type __len = size() + std::max(size(), __n); return (__len < size() \|\| __len > max_size()) ? max_size() : __len; } void _M_erase_at_end(iterator __pos) { this->_M_impl._M_finish = __pos; } iterator _M_erase(iterator __pos); iterator _M_erase(iterator __first, iterator __last); }; _GLIBCXX_END_NAMESPACE_CONTAINER _GLIBCXX_END_NAMESPACE_VERSION } // namespace std #if __cplusplus >= 201103L namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION // DR 1182. /// std::hash specialization for vector<bool>. template<typename _Alloc> struct hash<_GLIBCXX_STD_C::vector<bool, _Alloc>> : public __hash_base<size_t, _GLIBCXX_STD_C::vector<bool, _Alloc>> { size_t operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>&) const noexcept; }; _GLIBCXX_END_NAMESPACE_VERSION }// namespace std #endif // C++11 #endif Back

Edit File : stl_bvector.h | Size : 32.94 KB

// vector<bool> specialization -*- C++ -*-

// Copyright (C) 2001-2018 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/>.

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996-1999
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

/** @file bits/stl_bvector.h
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{vector}
 */

#ifndef _STL_BVECTOR_H
#define _STL_BVECTOR_H 1

#if __cplusplus >= 201103L
#include <initializer_list>
#include <bits/functional_hash.h>
#endif

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
_GLIBCXX_BEGIN_NAMESPACE_CONTAINER

typedef unsigned long _Bit_type;
  enum { _S_word_bit = int(__CHAR_BIT__ * sizeof(_Bit_type)) };

struct _Bit_reference
  {
    _Bit_type * _M_p;
    _Bit_type _M_mask;

_Bit_reference(_Bit_type * __x, _Bit_type __y)
    : _M_p(__x), _M_mask(__y) { }

_Bit_reference() _GLIBCXX_NOEXCEPT : _M_p(0), _M_mask(0) { }

operator bool() const _GLIBCXX_NOEXCEPT
    { return !!(*_M_p & _M_mask); }

_Bit_reference&
    operator=(bool __x) _GLIBCXX_NOEXCEPT
    {
      if (__x)
	*_M_p |= _M_mask;
      else
	*_M_p &= ~_M_mask;
      return *this;
    }

_Bit_reference&
    operator=(const _Bit_reference& __x) _GLIBCXX_NOEXCEPT
    { return *this = bool(__x); }

bool
    operator==(const _Bit_reference& __x) const
    { return bool(*this) == bool(__x); }

bool
    operator<(const _Bit_reference& __x) const
    { return !bool(*this) && bool(__x); }

void
    flip() _GLIBCXX_NOEXCEPT
    { *_M_p ^= _M_mask; }
  };

#if __cplusplus >= 201103L
  inline void
  swap(_Bit_reference __x, _Bit_reference __y) noexcept
  {
    bool __tmp = __x;
    __x = __y;
    __y = __tmp;
  }

inline void
  swap(_Bit_reference __x, bool& __y) noexcept
  {
    bool __tmp = __x;
    __x = __y;
    __y = __tmp;
  }

inline void
  swap(bool& __x, _Bit_reference __y) noexcept
  {
    bool __tmp = __x;
    __x = __y;
    __y = __tmp;
  }
#endif

struct _Bit_iterator_base
  : public std::iterator<std::random_access_iterator_tag, bool>
  {
    _Bit_type * _M_p;
    unsigned int _M_offset;

_Bit_iterator_base(_Bit_type * __x, unsigned int __y)
    : _M_p(__x), _M_offset(__y) { }

void
    _M_bump_up()
    {
      if (_M_offset++ == int(_S_word_bit) - 1)
	{
	  _M_offset = 0;
	  ++_M_p;
	}
    }

void
    _M_bump_down()
    {
      if (_M_offset-- == 0)
	{
	  _M_offset = int(_S_word_bit) - 1;
	  --_M_p;
	}
    }

void
    _M_incr(ptrdiff_t __i)
    {
      difference_type __n = __i + _M_offset;
      _M_p += __n / int(_S_word_bit);
      __n = __n % int(_S_word_bit);
      if (__n < 0)
	{
	  __n += int(_S_word_bit);
	  --_M_p;
	}
      _M_offset = static_cast<unsigned int>(__n);
    }

bool
    operator==(const _Bit_iterator_base& __i) const
    { return _M_p == __i._M_p && _M_offset == __i._M_offset; }

bool
    operator<(const _Bit_iterator_base& __i) const
    {
      return _M_p < __i._M_p
	    || (_M_p == __i._M_p && _M_offset < __i._M_offset);
    }

bool
    operator!=(const _Bit_iterator_base& __i) const
    { return !(*this == __i); }

bool
    operator>(const _Bit_iterator_base& __i) const
    { return __i < *this; }

bool
    operator<=(const _Bit_iterator_base& __i) const
    { return !(__i < *this); }

bool
    operator>=(const _Bit_iterator_base& __i) const
    { return !(*this < __i); }
  };

inline ptrdiff_t
  operator-(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
  {
    return (int(_S_word_bit) * (__x._M_p - __y._M_p)
	    + __x._M_offset - __y._M_offset);
  }

struct _Bit_iterator : public _Bit_iterator_base
  {
    typedef _Bit_reference  reference;
    typedef _Bit_reference* pointer;
    typedef _Bit_iterator   iterator;

_Bit_iterator() : _Bit_iterator_base(0, 0) { }

_Bit_iterator(_Bit_type * __x, unsigned int __y)
    : _Bit_iterator_base(__x, __y) { }

iterator
    _M_const_cast() const
    { return *this; }

reference
    operator*() const
    { return reference(_M_p, 1UL << _M_offset); }

iterator&
    operator++()
    {
      _M_bump_up();
      return *this;
    }

iterator
    operator++(int)
    {
      iterator __tmp = *this;
      _M_bump_up();
      return __tmp;
    }

iterator&
    operator--()
    {
      _M_bump_down();
      return *this;
    }

iterator
    operator--(int)
    {
      iterator __tmp = *this;
      _M_bump_down();
      return __tmp;
    }

iterator&
    operator+=(difference_type __i)
    {
      _M_incr(__i);
      return *this;
    }

iterator&
    operator-=(difference_type __i)
    {
      *this += -__i;
      return *this;
    }

iterator
    operator+(difference_type __i) const
    {
      iterator __tmp = *this;
      return __tmp += __i;
    }

iterator
    operator-(difference_type __i) const
    {
      iterator __tmp = *this;
      return __tmp -= __i;
    }

reference
    operator[](difference_type __i) const
    { return *(*this + __i); }
  };

inline _Bit_iterator
  operator+(ptrdiff_t __n, const _Bit_iterator& __x)
  { return __x + __n; }

struct _Bit_const_iterator : public _Bit_iterator_base
  {
    typedef bool                 reference;
    typedef bool                 const_reference;
    typedef const bool*          pointer;
    typedef _Bit_const_iterator  const_iterator;

_Bit_const_iterator() : _Bit_iterator_base(0, 0) { }

_Bit_const_iterator(_Bit_type * __x, unsigned int __y)
    : _Bit_iterator_base(__x, __y) { }

_Bit_const_iterator(const _Bit_iterator& __x)
    : _Bit_iterator_base(__x._M_p, __x._M_offset) { }

_Bit_iterator
    _M_const_cast() const
    { return _Bit_iterator(_M_p, _M_offset); }

const_reference
    operator*() const
    { return _Bit_reference(_M_p, 1UL << _M_offset); }

const_iterator&
    operator++()
    {
      _M_bump_up();
      return *this;
    }

const_iterator
    operator++(int)
    {
      const_iterator __tmp = *this;
      _M_bump_up();
      return __tmp;
    }

const_iterator&
    operator--()
    {
      _M_bump_down();
      return *this;
    }

const_iterator
    operator--(int)
    {
      const_iterator __tmp = *this;
      _M_bump_down();
      return __tmp;
    }

const_iterator&
    operator+=(difference_type __i)
    {
      _M_incr(__i);
      return *this;
    }

const_iterator&
    operator-=(difference_type __i)
    {
      *this += -__i;
      return *this;
    }

const_iterator
    operator+(difference_type __i) const
    {
      const_iterator __tmp = *this;
      return __tmp += __i;
    }

const_iterator
    operator-(difference_type __i) const
    {
      const_iterator __tmp = *this;
      return __tmp -= __i;
    }

const_reference
    operator[](difference_type __i) const
    { return *(*this + __i); }
  };

inline _Bit_const_iterator
  operator+(ptrdiff_t __n, const _Bit_const_iterator& __x)
  { return __x + __n; }

inline void
  __fill_bvector(_Bit_type * __v,
		 unsigned int __first, unsigned int __last, bool __x)
  {
    const _Bit_type __fmask = ~0ul << __first;
    const _Bit_type __lmask = ~0ul >> (_S_word_bit - __last);
    const _Bit_type __mask = __fmask & __lmask;

if (__x)
      *__v |= __mask;
    else
      *__v &= ~__mask;
  }

inline void
  fill(_Bit_iterator __first, _Bit_iterator __last, const bool& __x)
  {
    if (__first._M_p != __last._M_p)
      {
	_Bit_type* __first_p = __first._M_p;
	if (__first._M_offset != 0)
	  __fill_bvector(__first_p++, __first._M_offset, _S_word_bit, __x);

__builtin_memset(__first_p, __x ? ~0 : 0,
			 (__last._M_p - __first_p) * sizeof(_Bit_type));

if (__last._M_offset != 0)
	  __fill_bvector(__last._M_p, 0, __last._M_offset, __x);
      }
    else if (__first._M_offset != __last._M_offset)
      __fill_bvector(__first._M_p, __first._M_offset, __last._M_offset, __x);
  }

template<typename _Alloc>
    struct _Bvector_base
    {
      typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
        rebind<_Bit_type>::other _Bit_alloc_type;
      typedef typename __gnu_cxx::__alloc_traits<_Bit_alloc_type>
	_Bit_alloc_traits;
      typedef typename _Bit_alloc_traits::pointer _Bit_pointer;

struct _Bvector_impl_data
      {
	_Bit_iterator 	_M_start;
	_Bit_iterator 	_M_finish;
	_Bit_pointer 	_M_end_of_storage;

_Bvector_impl_data() _GLIBCXX_NOEXCEPT
	: _M_start(), _M_finish(), _M_end_of_storage()
	{ }

#if __cplusplus >= 201103L
	_Bvector_impl_data(_Bvector_impl_data&& __x) noexcept
	: _M_start(__x._M_start), _M_finish(__x._M_finish)
	, _M_end_of_storage(__x._M_end_of_storage)
	{ __x._M_reset(); }

void
	_M_move_data(_Bvector_impl_data&& __x) noexcept
	{
	  this->_M_start = __x._M_start;
	  this->_M_finish = __x._M_finish;
	  this->_M_end_of_storage = __x._M_end_of_storage;
	  __x._M_reset();
	}
#endif

void
	_M_reset() _GLIBCXX_NOEXCEPT
	{
	  _M_start = _M_finish = _Bit_iterator();
	  _M_end_of_storage = _Bit_pointer();
	}
      };

struct _Bvector_impl
	: public _Bit_alloc_type, public _Bvector_impl_data
	{
	public:
	  _Bvector_impl() _GLIBCXX_NOEXCEPT_IF(
		is_nothrow_default_constructible<_Bit_alloc_type>::value)
	  : _Bit_alloc_type()
	  { }

_Bvector_impl(const _Bit_alloc_type& __a) _GLIBCXX_NOEXCEPT
	  : _Bit_alloc_type(__a)
	  { }

#if __cplusplus >= 201103L
	_Bvector_impl(_Bvector_impl&&) = default;
#endif

_Bit_type*
	_M_end_addr() const _GLIBCXX_NOEXCEPT
	{
	  if (this->_M_end_of_storage)
	    return std::__addressof(this->_M_end_of_storage[-1]) + 1;
	  return 0;
	}
      };

public:
      typedef _Alloc allocator_type;

_Bit_alloc_type&
      _M_get_Bit_allocator() _GLIBCXX_NOEXCEPT
      { return this->_M_impl; }

const _Bit_alloc_type&
      _M_get_Bit_allocator() const _GLIBCXX_NOEXCEPT
      { return this->_M_impl; }

allocator_type
      get_allocator() const _GLIBCXX_NOEXCEPT
      { return allocator_type(_M_get_Bit_allocator()); }

#if __cplusplus >= 201103L
      _Bvector_base() = default;
#else
      _Bvector_base() { }
#endif

_Bvector_base(const allocator_type& __a)
      : _M_impl(__a) { }

#if __cplusplus >= 201103L
      _Bvector_base(_Bvector_base&&) = default;
#endif

~_Bvector_base()
      { this->_M_deallocate(); }

protected:
      _Bvector_impl _M_impl;

_Bit_pointer
      _M_allocate(size_t __n)
      { return _Bit_alloc_traits::allocate(_M_impl, _S_nword(__n)); }

void
      _M_deallocate()
      {
	if (_M_impl._M_start._M_p)
	  {
	    const size_t __n = _M_impl._M_end_addr() - _M_impl._M_start._M_p;
	    _Bit_alloc_traits::deallocate(_M_impl,
					  _M_impl._M_end_of_storage - __n,
					  __n);
	    _M_impl._M_reset();
	  }
      }

#if __cplusplus >= 201103L
      void
      _M_move_data(_Bvector_base&& __x) noexcept
      { _M_impl._M_move_data(std::move(__x._M_impl)); }
#endif

static size_t
      _S_nword(size_t __n)
      { return (__n + int(_S_word_bit) - 1) / int(_S_word_bit); }
    };

_GLIBCXX_END_NAMESPACE_CONTAINER
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

// Declare a partial specialization of vector<T, Alloc>.
#include <bits/stl_vector.h>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
_GLIBCXX_BEGIN_NAMESPACE_CONTAINER

/**
   *  @brief  A specialization of vector for booleans which offers fixed time
   *  access to individual elements in any order.
   *
   *  @ingroup sequences
   *
   *  @tparam _Alloc  Allocator type.
   *
   *  Note that vector<bool> does not actually meet the requirements for being
   *  a container.  This is because the reference and pointer types are not
   *  really references and pointers to bool.  See DR96 for details.  @see
   *  vector for function documentation.
   *
   *  In some terminology a %vector can be described as a dynamic
   *  C-style array, it offers fast and efficient access to individual
   *  elements in any order and saves the user from worrying about
   *  memory and size allocation.  Subscripting ( @c [] ) access is
   *  also provided as with C-style arrays.
  */
  template<typename _Alloc>
    class vector<bool, _Alloc> : protected _Bvector_base<_Alloc>
    {
      typedef _Bvector_base<_Alloc>			_Base;
      typedef typename _Base::_Bit_pointer		_Bit_pointer;
      typedef typename _Base::_Bit_alloc_traits		_Bit_alloc_traits;

#if __cplusplus >= 201103L
      friend struct std::hash<vector>;
#endif

public:
      typedef bool					value_type;
      typedef size_t					size_type;
      typedef ptrdiff_t					difference_type;
      typedef _Bit_reference				reference;
      typedef bool					const_reference;
      typedef _Bit_reference*				pointer;
      typedef const bool*				const_pointer;
      typedef _Bit_iterator				iterator;
      typedef _Bit_const_iterator			const_iterator;
      typedef std::reverse_iterator<const_iterator>	const_reverse_iterator;
      typedef std::reverse_iterator<iterator>		reverse_iterator;
      typedef _Alloc					allocator_type;

allocator_type
      get_allocator() const
      { return _Base::get_allocator(); }

protected:
      using _Base::_M_allocate;
      using _Base::_M_deallocate;
      using _Base::_S_nword;
      using _Base::_M_get_Bit_allocator;

public:
#if __cplusplus >= 201103L
      vector() = default;
#else
      vector() { }
#endif

explicit
      vector(const allocator_type& __a)
      : _Base(__a) { }

#if __cplusplus >= 201103L
      explicit
      vector(size_type __n, const allocator_type& __a = allocator_type())
      : vector(__n, false, __a)
      { }

vector(size_type __n, const bool& __value,
	     const allocator_type& __a = allocator_type())
#else
      explicit
      vector(size_type __n, const bool& __value = bool(),
	     const allocator_type& __a = allocator_type())
#endif
      : _Base(__a)
      {
	_M_initialize(__n);
	_M_initialize_value(__value);
      }

vector(const vector& __x)
      : _Base(_Bit_alloc_traits::_S_select_on_copy(__x._M_get_Bit_allocator()))
      {
	_M_initialize(__x.size());
	_M_copy_aligned(__x.begin(), __x.end(), this->_M_impl._M_start);
      }

#if __cplusplus >= 201103L
      vector(vector&&) = default;

vector(vector&& __x, const allocator_type& __a)
      noexcept(_Bit_alloc_traits::_S_always_equal())
      : _Base(__a)
      {
	if (__x.get_allocator() == __a)
	  this->_M_move_data(std::move(__x));
	else
	  {
	    _M_initialize(__x.size());
	    _M_copy_aligned(__x.begin(), __x.end(), begin());
	    __x.clear();
	  }
      }

vector(const vector& __x, const allocator_type& __a)
      : _Base(__a)
      {
	_M_initialize(__x.size());
	_M_copy_aligned(__x.begin(), __x.end(), this->_M_impl._M_start);
      }

vector(initializer_list<bool> __l,
	     const allocator_type& __a = allocator_type())
      : _Base(__a)
      {
	_M_initialize_range(__l.begin(), __l.end(),
			    random_access_iterator_tag());
      }
#endif

#if __cplusplus >= 201103L
      template<typename _InputIterator,
	       typename = std::_RequireInputIter<_InputIterator>>
	vector(_InputIterator __first, _InputIterator __last,
	       const allocator_type& __a = allocator_type())
	: _Base(__a)
	{ _M_initialize_dispatch(__first, __last, __false_type()); }
#else
      template<typename _InputIterator>
	vector(_InputIterator __first, _InputIterator __last,
	       const allocator_type& __a = allocator_type())
	: _Base(__a)
	{
	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
	  _M_initialize_dispatch(__first, __last, _Integral());
	}
#endif

~vector() _GLIBCXX_NOEXCEPT { }

vector&
      operator=(const vector& __x)
      {
	if (&__x == this)
	  return *this;
#if __cplusplus >= 201103L
	if (_Bit_alloc_traits::_S_propagate_on_copy_assign())
	  {
	    if (this->_M_get_Bit_allocator() != __x._M_get_Bit_allocator())
	      {
		this->_M_deallocate();
		std::__alloc_on_copy(_M_get_Bit_allocator(),
				     __x._M_get_Bit_allocator());
		_M_initialize(__x.size());
	      }
	    else
	      std::__alloc_on_copy(_M_get_Bit_allocator(),
				   __x._M_get_Bit_allocator());
	  }
#endif
	if (__x.size() > capacity())
	  {
	    this->_M_deallocate();
	    _M_initialize(__x.size());
	  }
	this->_M_impl._M_finish = _M_copy_aligned(__x.begin(), __x.end(),
						  begin());
	return *this;
      }

#if __cplusplus >= 201103L
      vector&
      operator=(vector&& __x) noexcept(_Bit_alloc_traits::_S_nothrow_move())
      {
	if (_Bit_alloc_traits::_S_propagate_on_move_assign()
	    || this->_M_get_Bit_allocator() == __x._M_get_Bit_allocator())
	  {
	    this->_M_deallocate();
	    this->_M_move_data(std::move(__x));
	    std::__alloc_on_move(_M_get_Bit_allocator(),
				 __x._M_get_Bit_allocator());
	  }
	else
	  {
	    if (__x.size() > capacity())
	      {
		this->_M_deallocate();
		_M_initialize(__x.size());
	      }
	    this->_M_impl._M_finish = _M_copy_aligned(__x.begin(), __x.end(),
						      begin());
	    __x.clear();
	  }
	return *this;
      }

vector&
      operator=(initializer_list<bool> __l)
      {
	this->assign (__l.begin(), __l.end());
	return *this;
      }
#endif

// assign(), a generalized assignment member function.  Two
      // versions: one that takes a count, and one that takes a range.
      // The range version is a member template, so we dispatch on whether
      // or not the type is an integer.
      void
      assign(size_type __n, const bool& __x)
      { _M_fill_assign(__n, __x); }

#if __cplusplus >= 201103L
      template<typename _InputIterator,
	       typename = std::_RequireInputIter<_InputIterator>>
	void
	assign(_InputIterator __first, _InputIterator __last)
	{ _M_assign_aux(__first, __last, std::__iterator_category(__first)); }
#else
      template<typename _InputIterator>
	void
	assign(_InputIterator __first, _InputIterator __last)
	{
	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
	  _M_assign_dispatch(__first, __last, _Integral());
	}
#endif

#if __cplusplus >= 201103L
      void
      assign(initializer_list<bool> __l)
      { _M_assign_aux(__l.begin(), __l.end(), random_access_iterator_tag()); }
#endif

iterator
      begin() _GLIBCXX_NOEXCEPT
      { return this->_M_impl._M_start; }

const_iterator
      begin() const _GLIBCXX_NOEXCEPT
      { return this->_M_impl._M_start; }

iterator
      end() _GLIBCXX_NOEXCEPT
      { return this->_M_impl._M_finish; }

const_iterator
      end() const _GLIBCXX_NOEXCEPT
      { return this->_M_impl._M_finish; }

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 this->_M_impl._M_start; }

const_iterator
      cend() const noexcept
      { return this->_M_impl._M_finish; }

const_reverse_iterator
      crbegin() const noexcept
      { return const_reverse_iterator(end()); }

const_reverse_iterator
      crend() const noexcept
      { return const_reverse_iterator(begin()); }
#endif

size_type
      size() const _GLIBCXX_NOEXCEPT
      { return size_type(end() - begin()); }

size_type
      max_size() const _GLIBCXX_NOEXCEPT
      {
	const size_type __isize =
	  __gnu_cxx::__numeric_traits<difference_type>::__max
	  - int(_S_word_bit) + 1;
	const size_type __asize
	  = _Bit_alloc_traits::max_size(_M_get_Bit_allocator());
	return (__asize <= __isize / int(_S_word_bit)
		? __asize * int(_S_word_bit) : __isize);
      }

size_type
      capacity() const _GLIBCXX_NOEXCEPT
      { return size_type(const_iterator(this->_M_impl._M_end_addr(), 0)
			 - begin()); }

bool
      empty() const _GLIBCXX_NOEXCEPT
      { return begin() == end(); }

reference
      operator[](size_type __n)
      {
	return *iterator(this->_M_impl._M_start._M_p
			 + __n / int(_S_word_bit), __n % int(_S_word_bit));
      }

const_reference
      operator[](size_type __n) const
      {
	return *const_iterator(this->_M_impl._M_start._M_p
			     + __n / int(_S_word_bit), __n % int(_S_word_bit));
      }

protected:
      void
      _M_range_check(size_type __n) const
      {
	if (__n >= this->size())
	  __throw_out_of_range_fmt(__N("vector<bool>::_M_range_check: __n "
				       "(which is %zu) >= this->size() "
				       "(which is %zu)"),
				   __n, this->size());
      }

public:
      reference
      at(size_type __n)
      { _M_range_check(__n); return (*this)[__n]; }

const_reference
      at(size_type __n) const
      { _M_range_check(__n); return (*this)[__n]; }

void
      reserve(size_type __n)
      {
	if (__n > max_size())
	  __throw_length_error(__N("vector::reserve"));
	if (capacity() < __n)
	  _M_reallocate(__n);
      }

reference
      front()
      { return *begin(); }

const_reference
      front() const
      { return *begin(); }

reference
      back()
      { return *(end() - 1); }

const_reference
      back() const
      { return *(end() - 1); }

// _GLIBCXX_RESOLVE_LIB_DEFECTS
      // DR 464. Suggestion for new member functions in standard containers.
      // N.B. DR 464 says nothing about vector<bool> but we need something
      // here due to the way we are implementing DR 464 in the debug-mode
      // vector class.
      void
      data() _GLIBCXX_NOEXCEPT { }

void
      push_back(bool __x)
      {
	if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr())
	  *this->_M_impl._M_finish++ = __x;
	else
	  _M_insert_aux(end(), __x);
      }

void
      swap(vector& __x) _GLIBCXX_NOEXCEPT
      {
	std::swap(this->_M_impl._M_start, __x._M_impl._M_start);
	std::swap(this->_M_impl._M_finish, __x._M_impl._M_finish);
	std::swap(this->_M_impl._M_end_of_storage,
		  __x._M_impl._M_end_of_storage);
	_Bit_alloc_traits::_S_on_swap(_M_get_Bit_allocator(),
				      __x._M_get_Bit_allocator());
      }

// [23.2.5]/1, third-to-last entry in synopsis listing
      static void
      swap(reference __x, reference __y) _GLIBCXX_NOEXCEPT
      {
	bool __tmp = __x;
	__x = __y;
	__y = __tmp;
      }

iterator
#if __cplusplus >= 201103L
      insert(const_iterator __position, const bool& __x = bool())
#else
      insert(iterator __position, const bool& __x = bool())
#endif
      {
	const difference_type __n = __position - begin();
	if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_addr()
	    && __position == end())
	  *this->_M_impl._M_finish++ = __x;
	else
	  _M_insert_aux(__position._M_const_cast(), __x);
	return begin() + __n;
      }

#if __cplusplus >= 201103L
      template<typename _InputIterator,
	       typename = std::_RequireInputIter<_InputIterator>>
	iterator
	insert(const_iterator __position,
	       _InputIterator __first, _InputIterator __last)
	{
	  difference_type __offset = __position - cbegin();
	  _M_insert_dispatch(__position._M_const_cast(),
			     __first, __last, __false_type());
	  return begin() + __offset;
	}
#else
      template<typename _InputIterator>
	void
	insert(iterator __position,
	       _InputIterator __first, _InputIterator __last)
	{
	  typedef typename std::__is_integer<_InputIterator>::__type _Integral;
	  _M_insert_dispatch(__position, __first, __last, _Integral());
	}
#endif

#if __cplusplus >= 201103L
      iterator
      insert(const_iterator __position, size_type __n, const bool& __x)
      {
	difference_type __offset = __position - cbegin();
	_M_fill_insert(__position._M_const_cast(), __n, __x);
	return begin() + __offset;
      }
#else
      void
      insert(iterator __position, size_type __n, const bool& __x)
      { _M_fill_insert(__position, __n, __x); }
#endif

#if __cplusplus >= 201103L
      iterator
      insert(const_iterator __p, initializer_list<bool> __l)
      { return this->insert(__p, __l.begin(), __l.end()); }
#endif

void
      pop_back()
      { --this->_M_impl._M_finish; }

iterator
#if __cplusplus >= 201103L
      erase(const_iterator __position)
#else
      erase(iterator __position)
#endif
      { return _M_erase(__position._M_const_cast()); }

iterator
#if __cplusplus >= 201103L
      erase(const_iterator __first, const_iterator __last)
#else
      erase(iterator __first, iterator __last)
#endif
      { return _M_erase(__first._M_const_cast(), __last._M_const_cast()); }

void
      resize(size_type __new_size, bool __x = bool())
      {
	if (__new_size < size())
	  _M_erase_at_end(begin() + difference_type(__new_size));
	else
	  insert(end(), __new_size - size(), __x);
      }

#if __cplusplus >= 201103L
      void
      shrink_to_fit()
      { _M_shrink_to_fit(); }
#endif

void
      flip() _GLIBCXX_NOEXCEPT
      {
	_Bit_type * const __end = this->_M_impl._M_end_addr();
	for (_Bit_type * __p = this->_M_impl._M_start._M_p; __p != __end; ++__p)
	  *__p = ~*__p;
      }

void
      clear() _GLIBCXX_NOEXCEPT
      { _M_erase_at_end(begin()); }

#if __cplusplus >= 201103L
      template<typename... _Args>
#if __cplusplus > 201402L
	reference
#else
	void
#endif
	emplace_back(_Args&&... __args)
	{
	  push_back(bool(__args...));
#if __cplusplus > 201402L
	  return back();
#endif
	}

template<typename... _Args>
	iterator
	emplace(const_iterator __pos, _Args&&... __args)
	{ return insert(__pos, bool(__args...)); }
#endif

protected:
      // Precondition: __first._M_offset == 0 && __result._M_offset == 0.
      iterator
      _M_copy_aligned(const_iterator __first, const_iterator __last,
		      iterator __result)
      {
	_Bit_type* __q = std::copy(__first._M_p, __last._M_p, __result._M_p);
	return std::copy(const_iterator(__last._M_p, 0), __last,
			 iterator(__q, 0));
      }

void
      _M_initialize(size_type __n)
      {
	if (__n)
	  {
	    _Bit_pointer __q = this->_M_allocate(__n);
	    this->_M_impl._M_end_of_storage = __q + _S_nword(__n);
	    this->_M_impl._M_start = iterator(std::__addressof(*__q), 0);
	  }
	else
	  {
	    this->_M_impl._M_end_of_storage = _Bit_pointer();
	    this->_M_impl._M_start = iterator(0, 0);
	  }
	this->_M_impl._M_finish = this->_M_impl._M_start + difference_type(__n);

}

void
      _M_initialize_value(bool __x)
      {
	if (_Bit_type* __p = this->_M_impl._M_start._M_p)
	  __builtin_memset(__p, __x ? ~0 : 0,
			   (this->_M_impl._M_end_addr() - __p)
			   * sizeof(_Bit_type));
      }

void
      _M_reallocate(size_type __n);

#if __cplusplus >= 201103L
      bool
      _M_shrink_to_fit();
#endif

// Check whether it's an integral type.  If so, it's not an iterator.

// _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 438. Ambiguity in the "do the right thing" clause
      template<typename _Integer>
	void
	_M_initialize_dispatch(_Integer __n, _Integer __x, __true_type)
	{
	  _M_initialize(static_cast<size_type>(__n));
	  _M_initialize_value(__x);
	}

template<typename _InputIterator>
	void
	_M_initialize_dispatch(_InputIterator __first, _InputIterator __last,
			       __false_type)
	{ _M_initialize_range(__first, __last,
			      std::__iterator_category(__first)); }

template<typename _InputIterator>
	void
	_M_initialize_range(_InputIterator __first, _InputIterator __last,
			    std::input_iterator_tag)
	{
	  for (; __first != __last; ++__first)
	    push_back(*__first);
	}

template<typename _ForwardIterator>
	void
	_M_initialize_range(_ForwardIterator __first, _ForwardIterator __last,
			    std::forward_iterator_tag)
	{
	  const size_type __n = std::distance(__first, __last);
	  _M_initialize(__n);
	  std::copy(__first, __last, this->_M_impl._M_start);
	}

#if __cplusplus < 201103L
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 438. Ambiguity in the "do the right thing" clause
      template<typename _Integer>
	void
	_M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
	{ _M_fill_assign(__n, __val); }

template<class _InputIterator>
	void
	_M_assign_dispatch(_InputIterator __first, _InputIterator __last,
			   __false_type)
	{ _M_assign_aux(__first, __last, std::__iterator_category(__first)); }
#endif

void
      _M_fill_assign(size_t __n, bool __x)
      {
	if (__n > size())
	  {
	    _M_initialize_value(__x);
	    insert(end(), __n - size(), __x);
	  }
	else
	  {
	    _M_erase_at_end(begin() + __n);
	    _M_initialize_value(__x);
	  }
      }

template<typename _InputIterator>
	void
	_M_assign_aux(_InputIterator __first, _InputIterator __last,
		      std::input_iterator_tag)
	{
	  iterator __cur = begin();
	  for (; __first != __last && __cur != end(); ++__cur, ++__first)
	    *__cur = *__first;
	  if (__first == __last)
	    _M_erase_at_end(__cur);
	  else
	    insert(end(), __first, __last);
	}

template<typename _ForwardIterator>
	void
	_M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
		      std::forward_iterator_tag)
	{
	  const size_type __len = std::distance(__first, __last);
	  if (__len < size())
	    _M_erase_at_end(std::copy(__first, __last, begin()));
	  else
	    {
	      _ForwardIterator __mid = __first;
	      std::advance(__mid, size());
	      std::copy(__first, __mid, begin());
	      insert(end(), __mid, __last);
	    }
	}

// Check whether it's an integral type.  If so, it's not an iterator.

// _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 438. Ambiguity in the "do the right thing" clause
      template<typename _Integer>
	void
	_M_insert_dispatch(iterator __pos, _Integer __n, _Integer __x,
			   __true_type)
	{ _M_fill_insert(__pos, __n, __x); }

template<typename _InputIterator>
	void
	_M_insert_dispatch(iterator __pos,
			   _InputIterator __first, _InputIterator __last,
			   __false_type)
	{ _M_insert_range(__pos, __first, __last,
			  std::__iterator_category(__first)); }

void
      _M_fill_insert(iterator __position, size_type __n, bool __x);

template<typename _InputIterator>
	void
	_M_insert_range(iterator __pos, _InputIterator __first,
			_InputIterator __last, std::input_iterator_tag)
	{
	  for (; __first != __last; ++__first)
	    {
	      __pos = insert(__pos, *__first);
	      ++__pos;
	    }
	}

template<typename _ForwardIterator>
	void
	_M_insert_range(iterator __position, _ForwardIterator __first,
			_ForwardIterator __last, std::forward_iterator_tag);

void
      _M_insert_aux(iterator __position, bool __x);

size_type
      _M_check_len(size_type __n, const char* __s) const
      {
	if (max_size() - size() < __n)
	  __throw_length_error(__N(__s));

const size_type __len = size() + std::max(size(), __n);
	return (__len < size() || __len > max_size()) ? max_size() : __len;
      }

void
      _M_erase_at_end(iterator __pos)
      { this->_M_impl._M_finish = __pos; }

iterator
      _M_erase(iterator __pos);

iterator
      _M_erase(iterator __first, iterator __last);
  };

_GLIBCXX_END_NAMESPACE_CONTAINER
_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std

#if __cplusplus >= 201103L

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

// DR 1182.
  /// std::hash specialization for vector<bool>.
  template<typename _Alloc>
    struct hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>
    : public __hash_base<size_t, _GLIBCXX_STD_C::vector<bool, _Alloc>>
    {
      size_t
      operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>&) const noexcept;
    };

_GLIBCXX_END_NAMESPACE_VERSION
}// namespace std

#endif // C++11

#endif

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