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vector
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2005-01-29
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// Debugging vector implementation -*- C++ -*-
// Copyright (C) 2003, 2004
// 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 2, 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.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#ifndef _GLIBCXX_DEBUG_VECTOR
#define _GLIBCXX_DEBUG_VECTOR 1
#include <vector>
#include <debug/safe_sequence.h>
#include <debug/safe_iterator.h>
#include <utility>
namespace __gnu_debug_def
{
template<typename _Tp,
typename _Allocator = std::allocator<_Tp> >
class vector
: public _GLIBCXX_STD::vector<_Tp, _Allocator>,
public __gnu_debug::_Safe_sequence<vector<_Tp, _Allocator> >
{
typedef _GLIBCXX_STD::vector<_Tp, _Allocator> _Base;
typedef __gnu_debug::_Safe_sequence<vector> _Safe_base;
typedef typename _Base::const_iterator _Base_const_iterator;
typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
public:
typedef typename _Base::reference reference;
typedef typename _Base::const_reference const_reference;
typedef __gnu_debug::_Safe_iterator<typename _Base::iterator,vector>
iterator;
typedef __gnu_debug::_Safe_iterator<typename _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 _Allocator::pointer pointer;
typedef typename _Allocator::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:
explicit vector(const _Allocator& __a = _Allocator())
: _Base(__a), _M_guaranteed_capacity(0) { }
explicit vector(size_type __n, const _Tp& __value = _Tp(),
const _Allocator& __a = _Allocator())
: _Base(__n, __value, __a), _M_guaranteed_capacity(__n) { }
template<class _InputIterator>
vector(_InputIterator __first, _InputIterator __last,
const _Allocator& __a = _Allocator())
: _Base(__gnu_debug::__check_valid_range(__first, __last),
__last, __a),
_M_guaranteed_capacity(0)
{ _M_update_guaranteed_capacity(); }
vector(const vector<_Tp,_Allocator>& __x)
: _Base(__x), _Safe_base(), _M_guaranteed_capacity(__x.size()) { }
/// Construction from a release-mode vector
vector(const _Base& __x)
: _Base(__x), _Safe_base(), _M_guaranteed_capacity(__x.size()) { }
~vector() { }
vector<_Tp,_Allocator>&
operator=(const vector<_Tp,_Allocator>& __x)
{
static_cast<_Base&>(*this) = __x;
this->_M_invalidate_all();
_M_update_guaranteed_capacity();
return *this;
}
template<typename _InputIterator>
void
assign(_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_valid_range(__first, __last);
_Base::assign(__first, __last);
this->_M_invalidate_all();
_M_update_guaranteed_capacity();
}
void
assign(size_type __n, const _Tp& __u)
{
_Base::assign(__n, __u);
this->_M_invalidate_all();
_M_update_guaranteed_capacity();
}
using _Base::get_allocator;
// iterators:
iterator
begin()
{ return iterator(_Base::begin(), this); }
const_iterator
begin() const
{ return const_iterator(_Base::begin(), this); }
iterator
end()
{ return iterator(_Base::end(), this); }
const_iterator
end() const
{ return const_iterator(_Base::end(), this); }
reverse_iterator
rbegin()
{ return reverse_iterator(end()); }
const_reverse_iterator
rbegin() const
{ return const_reverse_iterator(end()); }
reverse_iterator
rend()
{ return reverse_iterator(begin()); }
const_reverse_iterator
rend() const
{ return const_reverse_iterator(begin()); }
// 23.2.4.2 capacity:
using _Base::size;
using _Base::max_size;
void
resize(size_type __sz, _Tp __c = _Tp())
{
bool __realloc = _M_requires_reallocation(__sz);
if (__sz < this->size())
this->_M_invalidate_if(_After_nth(__sz, _M_base().begin()));
_Base::resize(__sz, __c);
if (__realloc)
this->_M_invalidate_all();
}
using _Base::capacity;
using _Base::empty;
void
reserve(size_type __n)
{
bool __realloc = _M_requires_reallocation(__n);
_Base::reserve(__n);
if (__n > _M_guaranteed_capacity)
_M_guaranteed_capacity = __n;
if (__realloc)
this->_M_invalidate_all();
}
// element access:
reference
operator[](size_type __n)
{
__glibcxx_check_subscript(__n);
return _M_base()[__n];
}
const_reference
operator[](size_type __n) const
{
__glibcxx_check_subscript(__n);
return _M_base()[__n];
}
using _Base::at;
reference
front()
{
__glibcxx_check_nonempty();
return _Base::front();
}
const_reference
front() const
{
__glibcxx_check_nonempty();
return _Base::front();
}
reference
back()
{
__glibcxx_check_nonempty();
return _Base::back();
}
const_reference
back() const
{
__glibcxx_check_nonempty();
return _Base::back();
}
// 23.2.4.3 modifiers:
void
push_back(const _Tp& __x)
{
bool __realloc = _M_requires_reallocation(this->size() + 1);
_Base::push_back(__x);
if (__realloc)
this->_M_invalidate_all();
_M_update_guaranteed_capacity();
}
void
pop_back()
{
__glibcxx_check_nonempty();
iterator __victim = end() - 1;
__victim._M_invalidate();
_Base::pop_back();
}
iterator
insert(iterator __position, const _Tp& __x)
{
__glibcxx_check_insert(__position);
bool __realloc = _M_requires_reallocation(this->size() + 1);
difference_type __offset = __position - begin();
typename _Base::iterator __res = _Base::insert(__position.base(),__x);
if (__realloc)
this->_M_invalidate_all();
else
this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));
_M_update_guaranteed_capacity();
return iterator(__res, this);
}
void
insert(iterator __position, size_type __n, const _Tp& __x)
{
__glibcxx_check_insert(__position);
bool __realloc = _M_requires_reallocation(this->size() + __n);
difference_type __offset = __position - begin();
_Base::insert(__position.base(), __n, __x);
if (__realloc)
this->_M_invalidate_all();
else
this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));
_M_update_guaranteed_capacity();
}
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. */
typename _Base::iterator __old_begin = _M_base().begin();
difference_type __offset = __position - begin();
_Base::insert(__position.base(), __first, __last);
if (_M_base().begin() != __old_begin)
this->_M_invalidate_all();
else
this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));
_M_update_guaranteed_capacity();
}
iterator
erase(iterator __position)
{
__glibcxx_check_erase(__position);
difference_type __offset = __position - begin();
typename _Base::iterator __res = _Base::erase(__position.base());
this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));
return iterator(__res, this);
}
iterator
erase(iterator __first, iterator __last)
{
// _GLIBCXX_RESOLVE_LIB_DEFECTS
// 151. can't currently clear() empty container
__glibcxx_check_erase_range(__first, __last);
difference_type __offset = __first - begin();
typename _Base::iterator __res = _Base::erase(__first.base(),
__last.base());
this->_M_invalidate_if(_After_nth(__offset, _M_base().begin()));
return iterator(__res, this);
}
void
swap(vector<_Tp,_Allocator>& __x)
{
_Base::swap(__x);
this->_M_swap(__x);
std::swap(_M_guaranteed_capacity, __x._M_guaranteed_capacity);
}
void
clear()
{
_Base::clear();
this->_M_invalidate_all();
_M_guaranteed_capacity = 0;
}
_Base&
_M_base() { return *this; }
const _Base&
_M_base() const { return *this; }
private:
size_type _M_guaranteed_capacity;
bool
_M_requires_reallocation(size_type __elements)
{
#ifdef _GLIBCXX_DEBUG_PEDANTIC
return __elements > this->capacity();
#else
return __elements > _M_guaranteed_capacity;
#endif
}
void
_M_update_guaranteed_capacity()
{
if (this->size() > _M_guaranteed_capacity)
_M_guaranteed_capacity = this->size();
}
};
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 __gnu_debug_def
#endif