gcc/libstdc++-v3/include/debug/deque
Douglas Gregor 1b80d64af2 debug.html: Users are allowed to specialize in namespace __gnu_debug...
2003-11-13  Douglas Gregor  <gregod@cs.rpi.edu>

	* docs/html/debug.html: Users are allowed to specialize in
	namespace __gnu_debug, unlike in the Apple version of the debug
	mode. Clear up a confusing double-negative. Note that
	std::basic_string does provide extra debugging capabilities, but
	not safe iterators.
	* include/bits/basic_string.tcc: Make sure there's never an
	ambiguity when calling __is_null_pointer.
	* include/debug/deque: (deque::erase) Properly handle invalidation
	when erasing at the end of the deque.
	* include/debug/vector: (vector::swap): Swap _M_guaranteed_capacity.
	(vector::clear): Set the guaranteed capacity to 0.
	* testsuite/23_containers/deque/invalidation/4.cc: (test04): Test
	iterator invalidation when erasing at the end of the deque.

From-SVN: r73564
2003-11-14 00:15:00 +00:00

387 lines
10 KiB
C++

// Debugging deque implementation -*- C++ -*-
// Copyright (C) 2003
// 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_DEQUE
#define _GLIBCXX_DEBUG_DEQUE 1
#include <deque>
#include <debug/safe_sequence.h>
#include <debug/safe_iterator.h>
namespace __gnu_debug_def
{
template<typename _Tp, typename _Allocator = std::allocator<_Tp> >
class deque
: public __gnu_norm::deque<_Tp, _Allocator>,
public __gnu_debug::_Safe_sequence<deque<_Tp, _Allocator> >
{
typedef __gnu_norm::deque<_Tp, _Allocator> _Base;
typedef __gnu_debug::_Safe_sequence<deque> _Safe_base;
public:
typedef typename _Allocator::reference reference;
typedef typename _Allocator::const_reference const_reference;
typedef __gnu_debug::_Safe_iterator<typename _Base::iterator,deque>
iterator;
typedef __gnu_debug::_Safe_iterator<typename _Base::const_iterator,deque>
const_iterator;
typedef typename _Base::size_type size_type;
typedef typename _Base::difference_type difference_type;
typedef _Tp value_type;
typedef _Allocator allocator_type;
typedef typename _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;
// 23.2.1.1 construct/copy/destroy:
explicit deque(const _Allocator& __a = _Allocator())
: _Base(__a) { }
explicit deque(size_type __n, const _Tp& __value = _Tp(),
const _Allocator& __a = _Allocator())
: _Base(__n, __value, __a) { }
template<class _InputIterator>
deque(_InputIterator __first, _InputIterator __last,
const _Allocator& __a = _Allocator())
: _Base(__gnu_debug::__check_valid_range(__first, __last), __last, __a)
{ }
deque(const deque<_Tp,_Allocator>& __x) : _Base(__x), _Safe_base() { }
deque(const _Base& __x) : _Base(__x), _Safe_base() { }
~deque() { }
deque<_Tp,_Allocator>&
operator=(const deque<_Tp,_Allocator>& __x)
{
*static_cast<_Base*>(this) = __x;
this->_M_invalidate_all();
return *this;
}
template<class _InputIterator>
void
assign(_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_valid_range(__first, __last);
_Base::assign(__first, __last);
this->_M_invalidate_all();
}
void
assign(size_type __n, const _Tp& __t)
{
_Base::assign(__n, __t);
this->_M_invalidate_all();
}
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()); }
// 23.2.1.2 capacity:
using _Base::size;
using _Base::max_size;
void
resize(size_type __sz, _Tp __c = _Tp())
{
typedef typename _Base::const_iterator _Base_const_iterator;
typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
bool __invalidate_all = __sz > this->size();
if (__sz < this->size())
this->_M_invalidate_if(_After_nth(__sz, _M_base().begin()));
_Base::resize(__sz, __c);
if (__invalidate_all)
this->_M_invalidate_all();
}
using _Base::empty;
// 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();
}
// 23.2.1.3 modifiers:
void
push_front(const _Tp& __x)
{
_Base::push_front(__x);
this->_M_invalidate_all();
}
void
push_back(const _Tp& __x)
{
_Base::push_back(__x);
this->_M_invalidate_all();
}
iterator
insert(iterator __position, const _Tp& __x)
{
__glibcxx_check_insert(__position);
typename _Base::iterator __res = _Base::insert(__position.base(), __x);
this->_M_invalidate_all();
return iterator(__res, this);
}
void
insert(iterator __position, size_type __n, const _Tp& __x)
{
__glibcxx_check_insert(__position);
_Base::insert(__position.base(), __n, __x);
this->_M_invalidate_all();
}
template<class _InputIterator>
void
insert(iterator __position,
_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_insert_range(__position, __first, __last);
_Base::insert(__position.base(), __first, __last);
this->_M_invalidate_all();
}
void
pop_front()
{
__glibcxx_check_nonempty();
iterator __victim = begin();
__victim._M_invalidate();
_Base::pop_front();
}
void
pop_back()
{
__glibcxx_check_nonempty();
iterator __victim = end();
--__victim;
__victim._M_invalidate();
_Base::pop_back();
}
iterator
erase(iterator __position)
{
__glibcxx_check_erase(__position);
if (__position == begin() || __position == end()-1)
{
__position._M_invalidate();
return iterator(_Base::erase(__position.base()), this);
}
else
{
typename _Base::iterator __res = _Base::erase(__position.base());
this->_M_invalidate_all();
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);
if (__first == begin() || __last == end())
{
this->_M_detach_singular();
for (iterator __position = __first; __position != __last; )
{
iterator __victim = __position++;
__victim._M_invalidate();
}
try
{
return iterator(_Base::erase(__first.base(), __last.base()),
this);
}
catch (...)
{
this->_M_revalidate_singular();
__throw_exception_again;
}
}
else
{
typename _Base::iterator __res = _Base::erase(__first.base(),
__last.base());
this->_M_invalidate_all();
return iterator(__res, this);
}
}
void
swap(deque<_Tp,_Allocator>& __x)
{
_Base::swap(__x);
this->_M_swap(__x);
}
void
clear()
{
_Base::clear();
this->_M_invalidate_all();
}
_Base&
_M_base() { return *this; }
const _Base&
_M_base() const { return *this; }
};
template<typename _Tp, typename _Alloc>
inline bool
operator==(const deque<_Tp, _Alloc>& __lhs,
const deque<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() == __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator!=(const deque<_Tp, _Alloc>& __lhs,
const deque<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() != __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator<(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() < __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator<=(const deque<_Tp, _Alloc>& __lhs,
const deque<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() <= __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator>=(const deque<_Tp, _Alloc>& __lhs,
const deque<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() >= __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline bool
operator>(const deque<_Tp, _Alloc>& __lhs, const deque<_Tp, _Alloc>& __rhs)
{ return __lhs._M_base() > __rhs._M_base(); }
template<typename _Tp, typename _Alloc>
inline void
swap(deque<_Tp, _Alloc>& __lhs, deque<_Tp, _Alloc>& __rhs)
{ __lhs.swap(__rhs); }
} // namespace __gnu_debug_def
#endif