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stl_bvector.h
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stl_bvector.h
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// vector<bool> specialization -*- C++ -*-
// Copyright (C) 2001-2022 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
// <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
typedef unsigned long _Bit_type;
enum { _S_word_bit = int(__CHAR_BIT__ * sizeof(_Bit_type)) };
__attribute__((__nonnull__))
_GLIBCXX20_CONSTEXPR
void
__fill_bvector_n(_Bit_type*, size_t, bool) _GLIBCXX_NOEXCEPT;
_GLIBCXX_BEGIN_NAMESPACE_CONTAINER
struct _Bit_reference
{
_Bit_type * _M_p;
_Bit_type _M_mask;
_GLIBCXX20_CONSTEXPR
_Bit_reference(_Bit_type * __x, _Bit_type __y)
: _M_p(__x), _M_mask(__y) { }
_GLIBCXX20_CONSTEXPR
_Bit_reference() _GLIBCXX_NOEXCEPT : _M_p(0), _M_mask(0) { }
#if __cplusplus >= 201103L
_Bit_reference(const _Bit_reference&) = default;
#endif
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
operator bool() const _GLIBCXX_NOEXCEPT
{ return !!(*_M_p & _M_mask); }
_GLIBCXX20_CONSTEXPR
_Bit_reference&
operator=(bool __x) _GLIBCXX_NOEXCEPT
{
if (__x)
*_M_p |= _M_mask;
else
*_M_p &= ~_M_mask;
return *this;
}
#if __cplusplus > 202002L
constexpr const _Bit_reference&
operator=(bool __x) const noexcept
{
if (__x)
*_M_p |= _M_mask;
else
*_M_p &= ~_M_mask;
return *this;
}
#endif // C++23
_GLIBCXX20_CONSTEXPR
_Bit_reference&
operator=(const _Bit_reference& __x) _GLIBCXX_NOEXCEPT
{ return *this = bool(__x); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
bool
operator==(const _Bit_reference& __x) const
{ return bool(*this) == bool(__x); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
bool
operator<(const _Bit_reference& __x) const
{ return !bool(*this) && bool(__x); }
_GLIBCXX20_CONSTEXPR
void
flip() _GLIBCXX_NOEXCEPT
{ *_M_p ^= _M_mask; }
#if __cplusplus >= 201103L
_GLIBCXX20_CONSTEXPR
friend void
swap(_Bit_reference __x, _Bit_reference __y) noexcept
{
bool __tmp = __x;
__x = __y;
__y = __tmp;
}
_GLIBCXX20_CONSTEXPR
friend void
swap(_Bit_reference __x, bool& __y) noexcept
{
bool __tmp = __x;
__x = __y;
__y = __tmp;
}
_GLIBCXX20_CONSTEXPR
friend void
swap(bool& __x, _Bit_reference __y) noexcept
{
bool __tmp = __x;
__x = __y;
__y = __tmp;
}
#endif
};
// Ignore warnings about std::iterator.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
struct _Bit_iterator_base
: public std::iterator<std::random_access_iterator_tag, bool>
{
_Bit_type * _M_p;
unsigned int _M_offset;
_GLIBCXX20_CONSTEXPR
_Bit_iterator_base(_Bit_type * __x, unsigned int __y)
: _M_p(__x), _M_offset(__y) { }
_GLIBCXX20_CONSTEXPR
void
_M_bump_up()
{
if (_M_offset++ == int(_S_word_bit) - 1)
{
_M_offset = 0;
++_M_p;
}
}
_GLIBCXX20_CONSTEXPR
void
_M_bump_down()
{
if (_M_offset-- == 0)
{
_M_offset = int(_S_word_bit) - 1;
--_M_p;
}
}
_GLIBCXX20_CONSTEXPR
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);
}
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR bool
operator==(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
{ return __x._M_p == __y._M_p && __x._M_offset == __y._M_offset; }
#if __cpp_lib_three_way_comparison
[[nodiscard]]
friend constexpr strong_ordering
operator<=>(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
noexcept
{
if (const auto __cmp = __x._M_p <=> __y._M_p; __cmp != 0)
return __cmp;
return __x._M_offset <=> __y._M_offset;
}
#else
_GLIBCXX_NODISCARD
friend bool
operator<(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
{
return __x._M_p < __y._M_p
|| (__x._M_p == __y._M_p && __x._M_offset < __y._M_offset);
}
_GLIBCXX_NODISCARD
friend bool
operator!=(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
{ return !(__x == __y); }
_GLIBCXX_NODISCARD
friend bool
operator>(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
{ return __y < __x; }
_GLIBCXX_NODISCARD
friend bool
operator<=(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
{ return !(__y < __x); }
_GLIBCXX_NODISCARD
friend bool
operator>=(const _Bit_iterator_base& __x, const _Bit_iterator_base& __y)
{ return !(__x < __y); }
#endif // three-way comparison
friend _GLIBCXX20_CONSTEXPR 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);
}
};
#pragma GCC diagnostic pop
struct _Bit_iterator : public _Bit_iterator_base
{
typedef _Bit_reference reference;
#if __cplusplus > 201703L
typedef void pointer;
#else
typedef _Bit_reference* pointer;
#endif
typedef _Bit_iterator iterator;
_GLIBCXX20_CONSTEXPR
_Bit_iterator() : _Bit_iterator_base(0, 0) { }
_GLIBCXX20_CONSTEXPR
_Bit_iterator(_Bit_type * __x, unsigned int __y)
: _Bit_iterator_base(__x, __y) { }
_GLIBCXX20_CONSTEXPR
iterator
_M_const_cast() const
{ return *this; }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
reference
operator*() const
{ return reference(_M_p, 1UL << _M_offset); }
_GLIBCXX20_CONSTEXPR
iterator&
operator++()
{
_M_bump_up();
return *this;
}
_GLIBCXX20_CONSTEXPR
iterator
operator++(int)
{
iterator __tmp = *this;
_M_bump_up();
return __tmp;
}
_GLIBCXX20_CONSTEXPR
iterator&
operator--()
{
_M_bump_down();
return *this;
}
_GLIBCXX20_CONSTEXPR
iterator
operator--(int)
{
iterator __tmp = *this;
_M_bump_down();
return __tmp;
}
_GLIBCXX20_CONSTEXPR
iterator&
operator+=(difference_type __i)
{
_M_incr(__i);
return *this;
}
_GLIBCXX20_CONSTEXPR
iterator&
operator-=(difference_type __i)
{
*this += -__i;
return *this;
}
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
reference
operator[](difference_type __i) const
{ return *(*this + __i); }
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR iterator
operator+(const iterator& __x, difference_type __n)
{
iterator __tmp = __x;
__tmp += __n;
return __tmp;
}
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR iterator
operator+(difference_type __n, const iterator& __x)
{ return __x + __n; }
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR iterator
operator-(const iterator& __x, difference_type __n)
{
iterator __tmp = __x;
__tmp -= __n;
return __tmp;
}
};
struct _Bit_const_iterator : public _Bit_iterator_base
{
typedef bool reference;
typedef bool const_reference;
#if __cplusplus > 201703L
typedef void pointer;
#else
typedef const bool* pointer;
#endif
typedef _Bit_const_iterator const_iterator;
_GLIBCXX20_CONSTEXPR
_Bit_const_iterator() : _Bit_iterator_base(0, 0) { }
_GLIBCXX20_CONSTEXPR
_Bit_const_iterator(_Bit_type * __x, unsigned int __y)
: _Bit_iterator_base(__x, __y) { }
_GLIBCXX20_CONSTEXPR
_Bit_const_iterator(const _Bit_iterator& __x)
: _Bit_iterator_base(__x._M_p, __x._M_offset) { }
_GLIBCXX20_CONSTEXPR
_Bit_iterator
_M_const_cast() const
{ return _Bit_iterator(_M_p, _M_offset); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
const_reference
operator*() const
{ return _Bit_reference(_M_p, 1UL << _M_offset); }
_GLIBCXX20_CONSTEXPR
const_iterator&
operator++()
{
_M_bump_up();
return *this;
}
_GLIBCXX20_CONSTEXPR
const_iterator
operator++(int)
{
const_iterator __tmp = *this;
_M_bump_up();
return __tmp;
}
_GLIBCXX20_CONSTEXPR
const_iterator&
operator--()
{
_M_bump_down();
return *this;
}
_GLIBCXX20_CONSTEXPR
const_iterator
operator--(int)
{
const_iterator __tmp = *this;
_M_bump_down();
return __tmp;
}
_GLIBCXX20_CONSTEXPR
const_iterator&
operator+=(difference_type __i)
{
_M_incr(__i);
return *this;
}
_GLIBCXX20_CONSTEXPR
const_iterator&
operator-=(difference_type __i)
{
*this += -__i;
return *this;
}
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
const_reference
operator[](difference_type __i) const
{ return *(*this + __i); }
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR const_iterator
operator+(const const_iterator& __x, difference_type __n)
{
const_iterator __tmp = __x;
__tmp += __n;
return __tmp;
}
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR const_iterator
operator-(const const_iterator& __x, difference_type __n)
{
const_iterator __tmp = __x;
__tmp -= __n;
return __tmp;
}
_GLIBCXX_NODISCARD
friend _GLIBCXX20_CONSTEXPR const_iterator
operator+(difference_type __n, const const_iterator& __x)
{ return __x + __n; }
};
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
{
#if !_GLIBCXX_INLINE_VERSION
_Bit_iterator _M_start;
#else
// We don't need the offset field for the start, it's always zero.
struct {
_Bit_type* _M_p;
// Allow assignment from iterators (assume offset is zero):
_GLIBCXX20_CONSTEXPR
void operator=(_Bit_iterator __it) { _M_p = __it._M_p; }
} _M_start;
#endif
_Bit_iterator _M_finish;
_Bit_pointer _M_end_of_storage;
_GLIBCXX20_CONSTEXPR
_Bvector_impl_data() _GLIBCXX_NOEXCEPT
: _M_start(), _M_finish(), _M_end_of_storage()
{ }
#if __cplusplus >= 201103L
_Bvector_impl_data(const _Bvector_impl_data&) = default;
_Bvector_impl_data&
operator=(const _Bvector_impl_data&) = default;
_GLIBCXX20_CONSTEXPR
_Bvector_impl_data(_Bvector_impl_data&& __x) noexcept
: _Bvector_impl_data(__x)
{ __x._M_reset(); }
_GLIBCXX20_CONSTEXPR
void
_M_move_data(_Bvector_impl_data&& __x) noexcept
{
*this = __x;
__x._M_reset();
}
#endif
_GLIBCXX20_CONSTEXPR
void
_M_reset() _GLIBCXX_NOEXCEPT
{ *this = _Bvector_impl_data(); }
_GLIBCXX20_CONSTEXPR
void
_M_swap_data(_Bvector_impl_data& __x) _GLIBCXX_NOEXCEPT
{
// Do not use std::swap(_M_start, __x._M_start), etc as it loses
// information used by TBAA.
std::swap(*this, __x);
}
};
struct _Bvector_impl
: public _Bit_alloc_type, public _Bvector_impl_data
{
_GLIBCXX20_CONSTEXPR
_Bvector_impl() _GLIBCXX_NOEXCEPT_IF(
is_nothrow_default_constructible<_Bit_alloc_type>::value)
: _Bit_alloc_type()
{ }
_GLIBCXX20_CONSTEXPR
_Bvector_impl(const _Bit_alloc_type& __a) _GLIBCXX_NOEXCEPT
: _Bit_alloc_type(__a)
{ }
#if __cplusplus >= 201103L
// Not defaulted, to enforce noexcept(true) even when
// !is_nothrow_move_constructible<_Bit_alloc_type>.
_GLIBCXX20_CONSTEXPR
_Bvector_impl(_Bvector_impl&& __x) noexcept
: _Bit_alloc_type(std::move(__x)), _Bvector_impl_data(std::move(__x))
{ }
_GLIBCXX20_CONSTEXPR
_Bvector_impl(_Bit_alloc_type&& __a, _Bvector_impl&& __x) noexcept
: _Bit_alloc_type(std::move(__a)), _Bvector_impl_data(std::move(__x))
{ }
#endif
_GLIBCXX20_CONSTEXPR
_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;
_GLIBCXX20_CONSTEXPR
_Bit_alloc_type&
_M_get_Bit_allocator() _GLIBCXX_NOEXCEPT
{ return this->_M_impl; }
_GLIBCXX20_CONSTEXPR
const _Bit_alloc_type&
_M_get_Bit_allocator() const _GLIBCXX_NOEXCEPT
{ return this->_M_impl; }
_GLIBCXX20_CONSTEXPR
allocator_type
get_allocator() const _GLIBCXX_NOEXCEPT
{ return allocator_type(_M_get_Bit_allocator()); }
#if __cplusplus >= 201103L
_Bvector_base() = default;
#else
_Bvector_base() { }
#endif
_GLIBCXX20_CONSTEXPR
_Bvector_base(const allocator_type& __a)
: _M_impl(__a) { }
#if __cplusplus >= 201103L
_Bvector_base(_Bvector_base&&) = default;
_GLIBCXX20_CONSTEXPR
_Bvector_base(_Bvector_base&& __x, const allocator_type& __a) noexcept
: _M_impl(_Bit_alloc_type(__a), std::move(__x._M_impl))
{ }
#endif
_GLIBCXX20_CONSTEXPR
~_Bvector_base()
{ this->_M_deallocate(); }
protected:
_Bvector_impl _M_impl;
_GLIBCXX20_CONSTEXPR
_Bit_pointer
_M_allocate(size_t __n)
{
_Bit_pointer __p = _Bit_alloc_traits::allocate(_M_impl, _S_nword(__n));
#if __cpp_lib_is_constant_evaluated
if (std::is_constant_evaluated())
{
__n = _S_nword(__n);
for (size_t __i = 0; __i < __n; ++__i)
__p[__i] = 0ul;
}
#endif
return __p;
}
_GLIBCXX20_CONSTEXPR
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
_GLIBCXX20_CONSTEXPR
void
_M_move_data(_Bvector_base&& __x) noexcept
{ _M_impl._M_move_data(std::move(__x._M_impl)); }
#endif
_GLIBCXX_CONSTEXPR
static size_t
_S_nword(size_t __n)
{ return (__n + int(_S_word_bit) - 1) / int(_S_word_bit); }
};
/**
* @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;
_GLIBCXX20_CONSTEXPR
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
_GLIBCXX20_CONSTEXPR
explicit
vector(const allocator_type& __a)
: _Base(__a) { }
#if __cplusplus >= 201103L
_GLIBCXX20_CONSTEXPR
explicit
vector(size_type __n, const allocator_type& __a = allocator_type())
: vector(__n, false, __a)
{ }
_GLIBCXX20_CONSTEXPR
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);
}
_GLIBCXX20_CONSTEXPR
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(), begin());
}
#if __cplusplus >= 201103L
vector(vector&&) = default;
private:
_GLIBCXX20_CONSTEXPR
vector(vector&& __x, const allocator_type& __a, true_type) noexcept
: _Base(std::move(__x), __a)
{ }
_GLIBCXX20_CONSTEXPR
vector(vector&& __x, const allocator_type& __a, false_type)
: _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();
}
}
public:
_GLIBCXX20_CONSTEXPR
vector(vector&& __x, const __type_identity_t<allocator_type>& __a)
noexcept(_Bit_alloc_traits::_S_always_equal())
: vector(std::move(__x), __a,
typename _Bit_alloc_traits::is_always_equal{})
{ }
_GLIBCXX20_CONSTEXPR
vector(const vector& __x, const __type_identity_t<allocator_type>& __a)
: _Base(__a)
{
_M_initialize(__x.size());
_M_copy_aligned(__x.begin(), __x.end(), begin());
}
_GLIBCXX20_CONSTEXPR
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>>
_GLIBCXX20_CONSTEXPR
vector(_InputIterator __first, _InputIterator __last,
const allocator_type& __a = allocator_type())
: _Base(__a)
{
_M_initialize_range(__first, __last,
std::__iterator_category(__first));
}
#else
template<typename _InputIterator>
vector(_InputIterator __first, _InputIterator __last,
const allocator_type& __a = allocator_type())
: _Base(__a)
{
// Check whether it's an integral type. If so, it's not an iterator.
typedef typename std::__is_integer<_InputIterator>::__type _Integral;
_M_initialize_dispatch(__first, __last, _Integral());
}
#endif
_GLIBCXX20_CONSTEXPR
~vector() _GLIBCXX_NOEXCEPT { }
_GLIBCXX20_CONSTEXPR
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
_GLIBCXX20_CONSTEXPR
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;
}
_GLIBCXX20_CONSTEXPR
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.
_GLIBCXX20_CONSTEXPR
void
assign(size_type __n, const bool& __x)
{ _M_fill_assign(__n, __x); }
#if __cplusplus >= 201103L
template<typename _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
_GLIBCXX20_CONSTEXPR
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)
{
// Check whether it's an integral type. If so, it's not an iterator.
typedef typename std::__is_integer<_InputIterator>::__type _Integral;
_M_assign_dispatch(__first, __last, _Integral());
}
#endif
#if __cplusplus >= 201103L
_GLIBCXX20_CONSTEXPR
void
assign(initializer_list<bool> __l)
{ _M_assign_aux(__l.begin(), __l.end(), random_access_iterator_tag()); }
#endif
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
iterator
begin() _GLIBCXX_NOEXCEPT
{ return iterator(this->_M_impl._M_start._M_p, 0); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
const_iterator
begin() const _GLIBCXX_NOEXCEPT
{ return const_iterator(this->_M_impl._M_start._M_p, 0); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
iterator
end() _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_finish; }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
const_iterator
end() const _GLIBCXX_NOEXCEPT
{ return this->_M_impl._M_finish; }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
reverse_iterator
rbegin() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(end()); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
const_reverse_iterator
rbegin() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(end()); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
reverse_iterator
rend() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(begin()); }
_GLIBCXX_NODISCARD _GLIBCXX20_CONSTEXPR
const_reverse_iterator
rend() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(begin()); }
#if __cplusplus >= 201103L
[[__nodiscard__]] _GLIBCXX20_CONSTEXPR
const_iterator
cbegin() const noexcept
{ return const_iterator(this->_M_impl._M_start._M_p, 0); }
[[__nodiscard__]] _GLIBCXX20_CONSTEXPR