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@@ -1,643 +0,0 @@
-// Safe iterator implementation -*- C++ -*-
-
-// Copyright (C) 2003, 2004, 2005, 2006, 2009
-// 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/safe_iterator.h
- * This file is a GNU debug extension to the Standard C++ Library.
- */
-
-#ifndef _GLIBCXX_DEBUG_SAFE_ITERATOR_H
-#define _GLIBCXX_DEBUG_SAFE_ITERATOR_H 1
-
-#include <debug/debug.h>
-#include <debug/macros.h>
-#include <debug/functions.h>
-#include <debug/formatter.h>
-#include <debug/safe_base.h>
-#include <bits/stl_pair.h>
-#include <ext/type_traits.h>
-
-namespace __gnu_debug
-{
- /** Iterators that derive from _Safe_iterator_base but that aren't
- * _Safe_iterators can be determined singular or non-singular via
- * _Safe_iterator_base.
- */
- inline bool
- __check_singular_aux(const _Safe_iterator_base* __x)
- { return __x->_M_singular(); }
-
- /** \brief Safe iterator wrapper.
- *
- * The class template %_Safe_iterator is a wrapper around an
- * iterator that tracks the iterator's movement among sequences and
- * checks that operations performed on the "safe" iterator are
- * legal. In additional to the basic iterator operations (which are
- * validated, and then passed to the underlying iterator),
- * %_Safe_iterator has member functions for iterator invalidation,
- * attaching/detaching the iterator from sequences, and querying
- * the iterator's state.
- */
- template<typename _Iterator, typename _Sequence>
- class _Safe_iterator : public _Safe_iterator_base
- {
- typedef _Safe_iterator _Self;
-
- /** The precision to which we can calculate the distance between
- * two iterators.
- */
- enum _Distance_precision
- {
- __dp_equality, //< Can compare iterator equality, only
- __dp_sign, //< Can determine equality and ordering
- __dp_exact //< Can determine distance precisely
- };
-
- /// The underlying iterator
- _Iterator _M_current;
-
- /// Determine if this is a constant iterator.
- bool
- _M_constant() const
- {
- typedef typename _Sequence::const_iterator const_iterator;
- return __is_same<const_iterator, _Safe_iterator>::value;
- }
-
- typedef std::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;
-
- /// @post the iterator is singular and unattached
- _Safe_iterator() : _M_current() { }
-
- /**
- * @brief Safe iterator construction from an unsafe iterator and
- * its sequence.
- *
- * @pre @p seq is not NULL
- * @post this is not singular
- */
- _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"));
- }
-
- /**
- * @brief Copy construction.
- * @pre @p x is not singular
- */
- _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"));
- }
-
- /**
- * @brief Converting constructor from a mutable iterator to a
- * constant iterator.
- *
- * @pre @p x is not singular
- */
- template<typename _MutableIterator>
- _Safe_iterator(
- const _Safe_iterator<_MutableIterator,
- typename __gnu_cxx::__enable_if<(std::__are_same<_MutableIterator,
- typename _Sequence::iterator::_Base_iterator>::__value),
- _Sequence>::__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"));
- }
-
- /**
- * @brief Copy assignment.
- * @pre @p x is not singular
- */
- _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;
- }
-
- /**
- * @brief Iterator dereference.
- * @pre iterator is dereferenceable
- */
- reference
- operator*() const
- {
-
- _GLIBCXX_DEBUG_VERIFY(this->_M_dereferenceable(),
- _M_message(__msg_bad_deref)
- ._M_iterator(*this, "this"));
- return *_M_current;
- }
-
- /**
- * @brief Iterator dereference.
- * @pre iterator is dereferenceable
- * @todo Make this correct w.r.t. iterators that return proxies
- * @todo Use addressof() instead of & operator
- */
- pointer
- operator->() const
- {
- _GLIBCXX_DEBUG_VERIFY(this->_M_dereferenceable(),
- _M_message(__msg_bad_deref)
- ._M_iterator(*this, "this"));
- return &*_M_current;
- }
-
- // ------ Input iterator requirements ------
- /**
- * @brief Iterator preincrement
- * @pre iterator is incrementable
- */
- _Safe_iterator&
- operator++()
- {
- _GLIBCXX_DEBUG_VERIFY(this->_M_incrementable(),
- _M_message(__msg_bad_inc)
- ._M_iterator(*this, "this"));
- ++_M_current;
- return *this;
- }
-
- /**
- * @brief Iterator postincrement
- * @pre iterator is incrementable
- */
- _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;
- }
-
- // ------ Bidirectional iterator requirements ------
- /**
- * @brief Iterator predecrement
- * @pre iterator is decrementable
- */
- _Safe_iterator&
- operator--()
- {
- _GLIBCXX_DEBUG_VERIFY(this->_M_decrementable(),
- _M_message(__msg_bad_dec)
- ._M_iterator(*this, "this"));
- --_M_current;
- return *this;
- }
-
- /**
- * @brief Iterator postdecrement
- * @pre iterator is decrementable
- */
- _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;
- }
-
- // ------ Random access iterator requirements ------
- 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;
- }
-
- // ------ Utilities ------
- /**
- * @brief Return the underlying iterator
- */
- _Iterator
- base() const { return _M_current; }
-
- /**
- * @brief Conversion to underlying non-debug iterator to allow
- * better interaction with non-debug containers.
- */
- operator _Iterator() const { return _M_current; }
-
- /** Attach iterator to the given sequence. */
- void
- _M_attach(const _Sequence* __seq)
- {
- _Safe_iterator_base::_M_attach(const_cast<_Sequence*>(__seq),
- _M_constant());
- }
-
- /** Likewise, but not thread-safe. */
- void
- _M_attach_single(const _Sequence* __seq)
- {
- _Safe_iterator_base::_M_attach_single(const_cast<_Sequence*>(__seq),
- _M_constant());
- }
-
- /** Invalidate the iterator, making it singular. */
- void
- _M_invalidate();
-
- /** Likewise, but not thread-safe. */
- void
- _M_invalidate_single();
-
- /// Is the iterator dereferenceable?
- bool
- _M_dereferenceable() const
- { return !this->_M_singular() && !_M_is_end(); }
-
- /// Is the iterator incrementable?
- bool
- _M_incrementable() const { return this->_M_dereferenceable(); }
-
- // Is the iterator decrementable?
- bool
- _M_decrementable() const { return !_M_singular() && !_M_is_begin(); }
-
- // Can we advance the iterator @p __n steps (@p __n may be negative)
- bool
- _M_can_advance(const difference_type& __n) const;
-
- // Is the iterator range [*this, __rhs) valid?
- template<typename _Other>
- bool
- _M_valid_range(const _Safe_iterator<_Other, _Sequence>& __rhs) const;
-
- // The sequence this iterator references.
- const _Sequence*
- _M_get_sequence() const
- { return static_cast<const _Sequence*>(_M_sequence); }
-
- /** Determine the distance between two iterators with some known
- * precision.
- */
- template<typename _Iterator1, typename _Iterator2>
- static std::pair<difference_type, _Distance_precision>
- _M_get_distance(const _Iterator1& __lhs, const _Iterator2& __rhs)
- {
- typedef typename std::iterator_traits<_Iterator1>::iterator_category
- _Category;
- return _M_get_distance(__lhs, __rhs, _Category());
- }
-
- template<typename _Iterator1, typename _Iterator2>
- static std::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 std::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);
- }
-
- /// Is this iterator equal to the sequence's begin() iterator?
- bool _M_is_begin() const
- { return *this == static_cast<const _Sequence*>(_M_sequence)->begin(); }
-
- /// Is this iterator equal to the sequence's end() iterator?
- 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();
- }
-
- // _GLIBCXX_RESOLVE_LIB_DEFECTS
- // According to the resolution of DR179 not only the various comparison
- // operators but also operator- must accept mixed iterator/const_iterator
- // parameters.
- 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 typename _Safe_iterator<_Iterator, _Sequence>::difference_type
- 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_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; }
-} // namespace __gnu_debug
-
-#ifndef _GLIBCXX_EXPORT_TEMPLATE
-# include <debug/safe_iterator.tcc>
-#endif
-
-#endif