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// Debugging vector implementation -*- C++ -*-
// Copyright (C) 2003-2015 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// <http://www.gnu.org/licenses/>.
/** @file debug/vector
* This file is a GNU debug extension to the Standard C++ Library.
*/
#ifndef _GLIBCXX_DEBUG_VECTOR
#define _GLIBCXX_DEBUG_VECTOR 1
#include <vector>
#include <utility>
#include <debug/safe_sequence.h>
#include <debug/safe_container.h>
#include <debug/safe_iterator.h>
namespace __gnu_debug
{
/** @brief Base class for Debug Mode vector.
*
* Adds information about the guaranteed capacity, which is useful for
* detecting code which relies on non-portable implementation details of
* the libstdc++ reallocation policy.
*/
template<typename _SafeSequence,
typename _BaseSequence>
class _Safe_vector
{
typedef typename _BaseSequence::size_type size_type;
const _SafeSequence&
_M_seq() const { return *static_cast<const _SafeSequence*>(this); }
protected:
_Safe_vector() _GLIBCXX_NOEXCEPT
: _M_guaranteed_capacity(0)
{ _M_update_guaranteed_capacity(); }
_Safe_vector(const _Safe_vector&) _GLIBCXX_NOEXCEPT
: _M_guaranteed_capacity(0)
{ _M_update_guaranteed_capacity(); }
_Safe_vector(size_type __n) _GLIBCXX_NOEXCEPT
: _M_guaranteed_capacity(__n)
{ }
#if __cplusplus >= 201103L
_Safe_vector(_Safe_vector&& __x) noexcept
: _Safe_vector()
{ __x._M_guaranteed_capacity = 0; }
_Safe_vector&
operator=(const _Safe_vector&) noexcept
{
_M_update_guaranteed_capacity();
return *this;
}
_Safe_vector&
operator=(_Safe_vector&& __x) noexcept
{
_M_update_guaranteed_capacity();
__x._M_guaranteed_capacity = 0;
return *this;
}
#endif
size_type _M_guaranteed_capacity;
bool
_M_requires_reallocation(size_type __elements) const _GLIBCXX_NOEXCEPT
{ return __elements > _M_seq().capacity(); }
void
_M_update_guaranteed_capacity() _GLIBCXX_NOEXCEPT
{
if (_M_seq().size() > _M_guaranteed_capacity)
_M_guaranteed_capacity = _M_seq().size();
}
};
}
namespace std _GLIBCXX_VISIBILITY(default)
{
namespace __debug
{
/// Class std::vector with safety/checking/debug instrumentation.
template<typename _Tp,
typename _Allocator = std::allocator<_Tp> >
class vector
: public __gnu_debug::_Safe_container<
vector<_Tp, _Allocator>, _Allocator, __gnu_debug::_Safe_sequence>,
public _GLIBCXX_STD_C::vector<_Tp, _Allocator>,
public __gnu_debug::_Safe_vector<
vector<_Tp, _Allocator>,
_GLIBCXX_STD_C::vector<_Tp, _Allocator> >
{
typedef _GLIBCXX_STD_C::vector<_Tp, _Allocator> _Base;
typedef __gnu_debug::_Safe_container<
vector, _Allocator, __gnu_debug::_Safe_sequence> _Safe;
typedef __gnu_debug::_Safe_vector<vector, _Base> _Safe_vector;
typedef typename _Base::iterator _Base_iterator;
typedef typename _Base::const_iterator _Base_const_iterator;
typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
public:
typedef typename _Base::reference reference;
typedef typename _Base::const_reference const_reference;
typedef __gnu_debug::_Safe_iterator<
_Base_iterator, vector> iterator;
typedef __gnu_debug::_Safe_iterator<
_Base_const_iterator, vector> const_iterator;
typedef typename _Base::size_type size_type;
typedef typename _Base::difference_type difference_type;
typedef _Tp value_type;
typedef _Allocator allocator_type;
typedef typename _Base::pointer pointer;
typedef typename _Base::const_pointer const_pointer;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
// 23.2.4.1 construct/copy/destroy:
#if __cplusplus < 201103L
vector() _GLIBCXX_NOEXCEPT
: _Base() { }
#else
vector() = default;
#endif
explicit
vector(const _Allocator& __a) _GLIBCXX_NOEXCEPT
: _Base(__a) { }
#if __cplusplus >= 201103L
explicit
vector(size_type __n, const _Allocator& __a = _Allocator())
: _Base(__n, __a), _Safe_vector(__n) { }
vector(size_type __n, const _Tp& __value,
const _Allocator& __a = _Allocator())
: _Base(__n, __value, __a) { }
#else
explicit
vector(size_type __n, const _Tp& __value = _Tp(),
const _Allocator& __a = _Allocator())
: _Base(__n, __value, __a) { }
#endif
#if __cplusplus >= 201103L
template<class _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
#else
template<class _InputIterator>
#endif
vector(_InputIterator __first, _InputIterator __last,
const _Allocator& __a = _Allocator())
: _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
__last)),
__gnu_debug::__base(__last), __a) { }
#if __cplusplus < 201103L
vector(const vector& __x)
: _Base(__x) { }
~vector() _GLIBCXX_NOEXCEPT { }
#else
vector(const vector&) = default;
vector(vector&&) = default;
vector(const vector& __x, const allocator_type& __a)
: _Base(__x, __a) { }
vector(vector&& __x, const allocator_type& __a)
: _Safe(std::move(__x._M_safe()), __a),
_Base(std::move(__x._M_base()), __a),
_Safe_vector(std::move(__x)) { }
vector(initializer_list<value_type> __l,
const allocator_type& __a = allocator_type())
: _Base(__l, __a) { }
~vector() = default;
#endif
/// Construction from a normal-mode vector
vector(const _Base& __x)
: _Base(__x) { }
#if __cplusplus < 201103L
vector&
operator=(const vector& __x)
{
this->_M_safe() = __x;
_M_base() = __x;
this->_M_update_guaranteed_capacity();
return *this;
}
#else
vector&
operator=(const vector&) = default;
vector&
operator=(vector&&) = default;
vector&
operator=(initializer_list<value_type> __l)
{
_M_base() = __l;
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
return *this;
}
#endif
#if __cplusplus >= 201103L
template<typename _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
#else
template<typename _InputIterator>
#endif
void
assign(_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_valid_range(__first, __last);
_Base::assign(__gnu_debug::__base(__first),
__gnu_debug::__base(__last));
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
void
assign(size_type __n, const _Tp& __u)
{
_Base::assign(__n, __u);
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
#if __cplusplus >= 201103L
void
assign(initializer_list<value_type> __l)
{
_Base::assign(__l);
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
#endif
using _Base::get_allocator;
// iterators:
iterator
begin() _GLIBCXX_NOEXCEPT
{ return iterator(_Base::begin(), this); }
const_iterator
begin() const _GLIBCXX_NOEXCEPT
{ return const_iterator(_Base::begin(), this); }
iterator
end() _GLIBCXX_NOEXCEPT
{ return iterator(_Base::end(), this); }
const_iterator
end() const _GLIBCXX_NOEXCEPT
{ return const_iterator(_Base::end(), this); }
reverse_iterator
rbegin() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(end()); }
const_reverse_iterator
rbegin() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(end()); }
reverse_iterator
rend() _GLIBCXX_NOEXCEPT
{ return reverse_iterator(begin()); }
const_reverse_iterator
rend() const _GLIBCXX_NOEXCEPT
{ return const_reverse_iterator(begin()); }
#if __cplusplus >= 201103L
const_iterator
cbegin() const noexcept
{ return const_iterator(_Base::begin(), this); }
const_iterator
cend() const noexcept
{ return const_iterator(_Base::end(), this); }
const_reverse_iterator
crbegin() const noexcept
{ return const_reverse_iterator(end()); }
const_reverse_iterator
crend() const noexcept
{ return const_reverse_iterator(begin()); }
#endif
// 23.2.4.2 capacity:
using _Base::size;
using _Base::max_size;
#if __cplusplus >= 201103L
void
resize(size_type __sz)
{
bool __realloc = this->_M_requires_reallocation(__sz);
if (__sz < this->size())
this->_M_invalidate_after_nth(__sz);
_Base::resize(__sz);
if (__realloc)
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
void
resize(size_type __sz, const _Tp& __c)
{
bool __realloc = this->_M_requires_reallocation(__sz);
if (__sz < this->size())
this->_M_invalidate_after_nth(__sz);
_Base::resize(__sz, __c);
if (__realloc)
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
#else
void
resize(size_type __sz, _Tp __c = _Tp())
{
bool __realloc = this->_M_requires_reallocation(__sz);
if (__sz < this->size())
this->_M_invalidate_after_nth(__sz);
_Base::resize(__sz, __c);
if (__realloc)
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
#endif
#if __cplusplus >= 201103L
void
shrink_to_fit()
{
if (_Base::_M_shrink_to_fit())
{
this->_M_guaranteed_capacity = _Base::capacity();
this->_M_invalidate_all();
}
}
#endif
size_type
capacity() const _GLIBCXX_NOEXCEPT
{
#ifdef _GLIBCXX_DEBUG_PEDANTIC
return this->_M_guaranteed_capacity;
#else
return _Base::capacity();
#endif
}
using _Base::empty;
void
reserve(size_type __n)
{
bool __realloc = this->_M_requires_reallocation(__n);
_Base::reserve(__n);
if (__n > this->_M_guaranteed_capacity)
this->_M_guaranteed_capacity = __n;
if (__realloc)
this->_M_invalidate_all();
}
// element access:
reference
operator[](size_type __n) _GLIBCXX_NOEXCEPT
{
__glibcxx_check_subscript(__n);
return _M_base()[__n];
}
const_reference
operator[](size_type __n) const _GLIBCXX_NOEXCEPT
{
__glibcxx_check_subscript(__n);
return _M_base()[__n];
}
using _Base::at;
reference
front() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::front();
}
const_reference
front() const _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::front();
}
reference
back() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::back();
}
const_reference
back() const _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
return _Base::back();
}
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// DR 464. Suggestion for new member functions in standard containers.
using _Base::data;
// 23.2.4.3 modifiers:
void
push_back(const _Tp& __x)
{
bool __realloc = this->_M_requires_reallocation(this->size() + 1);
_Base::push_back(__x);
if (__realloc)
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
#if __cplusplus >= 201103L
template<typename _Up = _Tp>
typename __gnu_cxx::__enable_if<!std::__are_same<_Up, bool>::__value,
void>::__type
push_back(_Tp&& __x)
{ emplace_back(std::move(__x)); }
template<typename... _Args>
void
emplace_back(_Args&&... __args)
{
bool __realloc = this->_M_requires_reallocation(this->size() + 1);
_Base::emplace_back(std::forward<_Args>(__args)...);
if (__realloc)
this->_M_invalidate_all();
this->_M_update_guaranteed_capacity();
}
#endif
void
pop_back() _GLIBCXX_NOEXCEPT
{
__glibcxx_check_nonempty();
this->_M_invalidate_if(_Equal(--_Base::end()));
_Base::pop_back();
}
#if __cplusplus >= 201103L
template<typename... _Args>
iterator
emplace(const_iterator __position, _Args&&... __args)
{
__glibcxx_check_insert(__position);
bool __realloc = this->_M_requires_reallocation(this->size() + 1);
difference_type __offset = __position.base() - _Base::begin();
_Base_iterator __res = _Base::emplace(__position.base(),
std::forward<_Args>(__args)...);
if (__realloc)
this->_M_invalidate_all();
else
this->_M_invalidate_after_nth(__offset);
this->_M_update_guaranteed_capacity();
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);
bool __realloc = this->_M_requires_reallocation(this->size() + 1);
difference_type __offset = __position.base() - _Base::begin();
_Base_iterator __res = _Base::insert(__position.base(), __x);
if (__realloc)
this->_M_invalidate_all();
else
this->_M_invalidate_after_nth(__offset);
this->_M_update_guaranteed_capacity();
return iterator(__res, this);
}
#if __cplusplus >= 201103L
template<typename _Up = _Tp>
typename __gnu_cxx::__enable_if<!std::__are_same<_Up, bool>::__value,
iterator>::__type
insert(const_iterator __position, _Tp&& __x)
{ return emplace(__position, std::move(__x)); }
iterator
insert(const_iterator __position, initializer_list<value_type> __l)
{ return this->insert(__position, __l.begin(), __l.end()); }
#endif
#if __cplusplus >= 201103L
iterator
insert(const_iterator __position, size_type __n, const _Tp& __x)
{
__glibcxx_check_insert(__position);
bool __realloc = this->_M_requires_reallocation(this->size() + __n);
difference_type __offset = __position.base() - _Base::cbegin();
_Base_iterator __res = _Base::insert(__position.base(), __n, __x);
if (__realloc)
this->_M_invalidate_all();
else
this->_M_invalidate_after_nth(__offset);
this->_M_update_guaranteed_capacity();
return iterator(__res, this);
}
#else
void
insert(iterator __position, size_type __n, const _Tp& __x)
{
__glibcxx_check_insert(__position);
bool __realloc = this->_M_requires_reallocation(this->size() + __n);
difference_type __offset = __position.base() - _Base::begin();
_Base::insert(__position.base(), __n, __x);
if (__realloc)
this->_M_invalidate_all();
else
this->_M_invalidate_after_nth(__offset);
this->_M_update_guaranteed_capacity();
}
#endif
#if __cplusplus >= 201103L
template<class _InputIterator,
typename = std::_RequireInputIter<_InputIterator>>
iterator
insert(const_iterator __position,
_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_insert_range(__position, __first, __last);
/* Hard to guess if invalidation will occur, because __last
- __first can't be calculated in all cases, so we just
punt here by checking if it did occur. */
_Base_iterator __old_begin = _M_base().begin();
difference_type __offset = __position.base() - _Base::cbegin();
_Base_iterator __res = _Base::insert(__position.base(),
__gnu_debug::__base(__first),
__gnu_debug::__base(__last));
if (_M_base().begin() != __old_begin)
this->_M_invalidate_all();
else
this->_M_invalidate_after_nth(__offset);
this->_M_update_guaranteed_capacity();
return iterator(__res, this);
}
#else
template<class _InputIterator>
void
insert(iterator __position,
_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_insert_range(__position, __first, __last);
/* Hard to guess if invalidation will occur, because __last
- __first can't be calculated in all cases, so we just
punt here by checking if it did occur. */
_Base_iterator __old_begin = _M_base().begin();
difference_type __offset = __position.base() - _Base::begin();
_Base::insert(__position.base(), __gnu_debug::__base(__first),
__gnu_debug::__base(__last));
if (_M_base().begin() != __old_begin)
this->_M_invalidate_all();
else
this->_M_invalidate_after_nth(__offset);
this->_M_update_guaranteed_capacity();
}
#endif
iterator
#if __cplusplus >= 201103L
erase(const_iterator __position)
#else
erase(iterator __position)
#endif
{
__glibcxx_check_erase(__position);
difference_type __offset = __position.base() - _Base::begin();
_Base_iterator __res = _Base::erase(__position.base());
this->_M_invalidate_after_nth(__offset);
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())
{
difference_type __offset = __first.base() - _Base::begin();
_Base_iterator __res = _Base::erase(__first.base(),
__last.base());
this->_M_invalidate_after_nth(__offset);
return iterator(__res, this);
}
else
#if __cplusplus >= 201103L
return begin() + (__first.base() - cbegin().base());
#else
return __first;
#endif
}
void
swap(vector& __x)
#if __cplusplus >= 201103L
noexcept( noexcept(declval<_Base>().swap(__x)) )
#endif
{
_Safe::_M_swap(__x);
_Base::swap(__x);
std::swap(this->_M_guaranteed_capacity, __x._M_guaranteed_capacity);
}
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; }
private:
void
_M_invalidate_after_nth(difference_type __n) _GLIBCXX_NOEXCEPT
{
typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
this->_M_invalidate_if(_After_nth(__n, _Base::begin()));
}
};
template<typename _Tp, typename _Alloc>
inline bool
operator==(const vector<_Tp, _Alloc>& __lhs,
const vector<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() == __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator!=(const vector<_Tp, _Alloc>& __lhs,
const vector<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() != __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator<(const vector<_Tp, _Alloc>& __lhs,
const vector<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() < __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator<=(const vector<_Tp, _Alloc>& __lhs,
const vector<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() <= __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator>=(const vector<_Tp, _Alloc>& __lhs,
const vector<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() >= __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator>(const vector<_Tp, _Alloc>& __lhs,
const vector<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() > __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline void
swap(vector<_Tp, _Alloc>& __lhs, vector<_Tp, _Alloc>& __rhs)
{ __lhs.swap(__rhs); }
} // namespace __debug
#if __cplusplus >= 201103L
// DR 1182.
/// std::hash specialization for vector<bool>.
template<typename _Alloc>
struct hash<__debug::vector<bool, _Alloc>>
: public __hash_base<size_t, __debug::vector<bool, _Alloc>>
{
size_t
operator()(const __debug::vector<bool, _Alloc>& __b) const noexcept
{ return std::hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>()
(__b._M_base()); }
};
#endif
} // namespace std
namespace __gnu_debug
{
template<typename _Tp, typename _Alloc>
struct _Is_contiguous_sequence<std::__debug::vector<_Tp, _Alloc> >
: std::__true_type
{ };
template<typename _Alloc>
struct _Is_contiguous_sequence<std::__debug::vector<bool, _Alloc> >
: std::__false_type
{ };
}
#endif
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