#ifndef _GLIBCXX_DEBUG_SAFE_ITERATOR_H
#define _GLIBCXX_DEBUG_SAFE_ITERATOR_H 1
#include <bits/stl_pair.h>
#include <debug/debug.h>
#include <debug/formatter.h>
#include <debug/safe_base.h>
#include <bits/cpp_type_traits.h>
namespace __gnu_debug
{
using std::iterator_traits;
using std::pair;
inline bool __check_singular_aux(const _Safe_iterator_base* __x)
{ return __x->_M_singular(); }
template<typename _Iterator, typename _Sequence>
class _Safe_iterator : public _Safe_iterator_base
{
typedef _Safe_iterator _Self;
enum _Distance_precision
{
__dp_equality, __dp_sign, __dp_exact };
_Iterator _M_current;
bool
_M_constant() const
{
typedef typename _Sequence::const_iterator const_iterator;
return __is_same<const_iterator, _Safe_iterator>::value;
}
typedef iterator_traits<_Iterator> _Traits;
public:
typedef _Iterator _Base_iterator;
typedef typename _Traits::iterator_category iterator_category;
typedef typename _Traits::value_type value_type;
typedef typename _Traits::difference_type difference_type;
typedef typename _Traits::reference reference;
typedef typename _Traits::pointer pointer;
_Safe_iterator() : _M_current() { }
_Safe_iterator(const _Iterator& __i, const _Sequence* __seq)
: _Safe_iterator_base(__seq, _M_constant()), _M_current(__i)
{
_GLIBCXX_DEBUG_VERIFY(! this->_M_singular(),
_M_message(__msg_init_singular)
._M_iterator(*this, "this"));
}
_Safe_iterator(const _Safe_iterator& __x)
: _Safe_iterator_base(__x, _M_constant()), _M_current(__x._M_current)
{
_GLIBCXX_DEBUG_VERIFY(!__x._M_singular(),
_M_message(__msg_init_copy_singular)
._M_iterator(*this, "this")
._M_iterator(__x, "other"));
}
template<typename _MutableIterator>
_Safe_iterator(
const _Safe_iterator<_MutableIterator,
typename std::__enable_if<
_Sequence,
(std::__are_same<_MutableIterator,
typename _Sequence::iterator::_Base_iterator>::__value)
>::__type>& __x)
: _Safe_iterator_base(__x, _M_constant()), _M_current(__x.base())
{
_GLIBCXX_DEBUG_VERIFY(!__x._M_singular(),
_M_message(__msg_init_const_singular)
._M_iterator(*this, "this")
._M_iterator(__x, "other"));
}
_Safe_iterator&
operator=(const _Safe_iterator& __x)
{
_GLIBCXX_DEBUG_VERIFY(!__x._M_singular(),
_M_message(__msg_copy_singular)
._M_iterator(*this, "this")
._M_iterator(__x, "other"));
_M_current = __x._M_current;
this->_M_attach(static_cast<_Sequence*>(__x._M_sequence));
return *this;
}
reference
operator*() const
{
_GLIBCXX_DEBUG_VERIFY(this->_M_dereferenceable(),
_M_message(__msg_bad_deref)
._M_iterator(*this, "this"));
return *_M_current;
}
pointer
operator->() const
{
_GLIBCXX_DEBUG_VERIFY(this->_M_dereferenceable(),
_M_message(__msg_bad_deref)
._M_iterator(*this, "this"));
return &*_M_current;
}
_Safe_iterator&
operator++()
{
_GLIBCXX_DEBUG_VERIFY(this->_M_incrementable(),
_M_message(__msg_bad_inc)
._M_iterator(*this, "this"));
++_M_current;
return *this;
}
_Safe_iterator
operator++(int)
{
_GLIBCXX_DEBUG_VERIFY(this->_M_incrementable(),
_M_message(__msg_bad_inc)
._M_iterator(*this, "this"));
_Safe_iterator __tmp(*this);
++_M_current;
return __tmp;
}
_Safe_iterator&
operator--()
{
_GLIBCXX_DEBUG_VERIFY(this->_M_decrementable(),
_M_message(__msg_bad_dec)
._M_iterator(*this, "this"));
--_M_current;
return *this;
}
_Safe_iterator
operator--(int)
{
_GLIBCXX_DEBUG_VERIFY(this->_M_decrementable(),
_M_message(__msg_bad_dec)
._M_iterator(*this, "this"));
_Safe_iterator __tmp(*this);
--_M_current;
return __tmp;
}
reference
operator[](const difference_type& __n) const
{
_GLIBCXX_DEBUG_VERIFY(this->_M_can_advance(__n)
&& this->_M_can_advance(__n+1),
_M_message(__msg_iter_subscript_oob)
._M_iterator(*this)._M_integer(__n));
return _M_current[__n];
}
_Safe_iterator&
operator+=(const difference_type& __n)
{
_GLIBCXX_DEBUG_VERIFY(this->_M_can_advance(__n),
_M_message(__msg_advance_oob)
._M_iterator(*this)._M_integer(__n));
_M_current += __n;
return *this;
}
_Safe_iterator
operator+(const difference_type& __n) const
{
_Safe_iterator __tmp(*this);
__tmp += __n;
return __tmp;
}
_Safe_iterator&
operator-=(const difference_type& __n)
{
_GLIBCXX_DEBUG_VERIFY(this->_M_can_advance(-__n),
_M_message(__msg_retreat_oob)
._M_iterator(*this)._M_integer(__n));
_M_current += -__n;
return *this;
}
_Safe_iterator
operator-(const difference_type& __n) const
{
_Safe_iterator __tmp(*this);
__tmp -= __n;
return __tmp;
}
_Iterator
base() const { return _M_current; }
operator _Iterator() const { return _M_current; }
void
_M_attach(const _Sequence* __seq)
{
_Safe_iterator_base::_M_attach(const_cast<_Sequence*>(__seq),
_M_constant());
}
void
_M_invalidate();
bool
_M_dereferenceable() const
{ return !this->_M_singular() && !_M_is_end(); }
bool
_M_incrementable() const { return this->_M_dereferenceable(); }
bool
_M_decrementable() const { return !_M_singular() && !_M_is_begin(); }
bool
_M_can_advance(const difference_type& __n) const;
template<typename _Other>
bool
_M_valid_range(const _Safe_iterator<_Other, _Sequence>& __rhs) const;
const _Sequence*
_M_get_sequence() const
{ return static_cast<const _Sequence*>(_M_sequence); }
template<typename _Iterator1, typename _Iterator2>
static pair<difference_type, _Distance_precision>
_M_get_distance(const _Iterator1& __lhs, const _Iterator2& __rhs)
{
typedef typename iterator_traits<_Iterator1>::iterator_category
_Category;
return _M_get_distance(__lhs, __rhs, _Category());
}
template<typename _Iterator1, typename _Iterator2>
static pair<difference_type, _Distance_precision>
_M_get_distance(const _Iterator1& __lhs, const _Iterator2& __rhs,
std::random_access_iterator_tag)
{
return std::make_pair(__rhs.base() - __lhs.base(), __dp_exact);
}
template<typename _Iterator1, typename _Iterator2>
static pair<difference_type, _Distance_precision>
_M_get_distance(const _Iterator1& __lhs, const _Iterator2& __rhs,
std::forward_iterator_tag)
{
return std::make_pair(__lhs.base() == __rhs.base()? 0 : 1,
__dp_equality);
}
bool _M_is_begin() const
{ return *this == static_cast<const _Sequence*>(_M_sequence)->begin(); }
bool _M_is_end() const
{ return *this == static_cast<const _Sequence*>(_M_sequence)->end(); }
};
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline bool
operator==(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_compare_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_compare_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() == __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline bool
operator==(const _Safe_iterator<_Iterator, _Sequence>& __lhs,
const _Safe_iterator<_Iterator, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_compare_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_compare_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() == __rhs.base();
}
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline bool
operator!=(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_compare_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_compare_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() != __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline bool
operator!=(const _Safe_iterator<_Iterator, _Sequence>& __lhs,
const _Safe_iterator<_Iterator, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_compare_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_compare_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() != __rhs.base();
}
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline bool
operator<(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() < __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline bool
operator<(const _Safe_iterator<_Iterator, _Sequence>& __lhs,
const _Safe_iterator<_Iterator, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() < __rhs.base();
}
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline bool
operator<=(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() <= __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline bool
operator<=(const _Safe_iterator<_Iterator, _Sequence>& __lhs,
const _Safe_iterator<_Iterator, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() <= __rhs.base();
}
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline bool
operator>(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() > __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline bool
operator>(const _Safe_iterator<_Iterator, _Sequence>& __lhs,
const _Safe_iterator<_Iterator, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() > __rhs.base();
}
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline bool
operator>=(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() >= __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline bool
operator>=(const _Safe_iterator<_Iterator, _Sequence>& __lhs,
const _Safe_iterator<_Iterator, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_iter_order_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_order_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() >= __rhs.base();
}
template<typename _IteratorL, typename _IteratorR, typename _Sequence>
inline typename _Safe_iterator<_IteratorL, _Sequence>::difference_type
operator-(const _Safe_iterator<_IteratorL, _Sequence>& __lhs,
const _Safe_iterator<_IteratorR, _Sequence>& __rhs)
{
_GLIBCXX_DEBUG_VERIFY(! __lhs._M_singular() && ! __rhs._M_singular(),
_M_message(__msg_distance_bad)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
_GLIBCXX_DEBUG_VERIFY(__lhs._M_can_compare(__rhs),
_M_message(__msg_distance_different)
._M_iterator(__lhs, "lhs")
._M_iterator(__rhs, "rhs"));
return __lhs.base() - __rhs.base();
}
template<typename _Iterator, typename _Sequence>
inline _Safe_iterator<_Iterator, _Sequence>
operator+(typename _Safe_iterator<_Iterator,_Sequence>::difference_type __n,
const _Safe_iterator<_Iterator, _Sequence>& __i)
{ return __i + __n; }
}
#ifndef _GLIBCXX_EXPORT_TEMPLATE
# include <debug/safe_iterator.tcc>
#endif
#endif