safe_iterator.h

mingw32.rar

      /**
       * @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());
      }

      /** Invalidate the iterator, making it singular. */
      void
      _M_invalidate();

      /// 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 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);
      }

      /// 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 _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