stl_list.h

mingw32.rar

       *  This function will insert copies of the data in the range [@a
       *  first,@a last) into the %list before the location specified by
       *  @a position.
       *
       *  Due to the nature of a %list this operation can be done in
       *  constant time, and does not invalidate iterators and
       *  references.
       */
      template<typename _InputIterator>
        void
        insert(iterator __position, _InputIterator __first,
	       _InputIterator __last)
        {
	  // Check whether it's an integral type.  If so, it's not an iterator.
	  typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
	  _M_insert_dispatch(__position, __first, __last, _Integral());
	}

      /**
       *  @brief  Remove element at given position.
       *  @param  position  Iterator pointing to element to be erased.
       *  @return  An iterator pointing to the next element (or end()).
       *
       *  This function will erase the element at the given position and thus
       *  shorten the %list by one.
       *
       *  Due to the nature of a %list this operation can be done in
       *  constant time, and only invalidates iterators/references to
       *  the element being removed.  The user is also cautioned that
       *  this function only erases the element, and that if the element
       *  is itself a pointer, the pointed-to memory is not touched in
       *  any way.  Managing the pointer is the user's responsibilty.
       */
      iterator
      erase(iterator __position);

      /**
       *  @brief  Remove a range of elements.
       *  @param  first  Iterator pointing to the first element to be erased.
       *  @param  last  Iterator pointing to one past the last element to be
       *                erased.
       *  @return  An iterator pointing to the element pointed to by @a last
       *           prior to erasing (or end()).
       *
       *  This function will erase the elements in the range @a
       *  [first,last) and shorten the %list accordingly.
       *
       *  Due to the nature of a %list this operation can be done in
       *  constant time, and only invalidates iterators/references to
       *  the element being removed.  The user is also cautioned that
       *  this function only erases the elements, and that if the
       *  elements themselves are pointers, the pointed-to memory is not
       *  touched in any way.  Managing the pointer is the user's
       *  responsibilty.
       */
      iterator
      erase(iterator __first, iterator __last)
      {
	while (__first != __last)
	  __first = erase(__first);
	return __last;
      }

      /**
       *  @brief  Swaps data with another %list.
       *  @param  x  A %list of the same element and allocator types.
       *
       *  This exchanges the elements between two lists in constant
       *  time.  Note that the global std::swap() function is
       *  specialized such that std::swap(l1,l2) will feed to this
       *  function.
       */
      void
      swap(list& __x)
      { _List_node_base::swap(this->_M_impl._M_node,__x._M_impl._M_node); }

      /**
       *  Erases all the elements.  Note that this function only erases
       *  the elements, and that if the elements themselves are
       *  pointers, the pointed-to memory is not touched in any way.
       *  Managing the pointer is the user's responsibilty.
       */
      void
      clear()
      {
        _Base::_M_clear();
        _Base::_M_init();
      }

      // [23.2.2.4] list operations
      /**
       *  @brief  Insert contents of another %list.
       *  @param  position  Iterator referencing the element to insert before.
       *  @param  x  Source list.
       *
       *  The elements of @a x are inserted in constant time in front of
       *  the element referenced by @a position.  @a x becomes an empty
       *  list.
       */
      void
      splice(iterator __position, list& __x)
      {
	if (!__x.empty())
	  this->_M_transfer(__position, __x.begin(), __x.end());
      }

      /**
       *  @brief  Insert element from another %list.
       *  @param  position  Iterator referencing the element to insert before.
       *  @param  x  Source list.
       *  @param  i  Iterator referencing the element to move.
       *
       *  Removes the element in list @a x referenced by @a i and
       *  inserts it into the current list before @a position.
       */
      void
      splice(iterator __position, list&, iterator __i)
      {
	iterator __j = __i;
	++__j;
	if (__position == __i || __position == __j)
	  return;
	this->_M_transfer(__position, __i, __j);
      }

      /**
       *  @brief  Insert range from another %list.
       *  @param  position  Iterator referencing the element to insert before.
       *  @param  x  Source list.
       *  @param  first  Iterator referencing the start of range in x.
       *  @param  last  Iterator referencing the end of range in x.
       *
       *  Removes elements in the range [first,last) and inserts them
       *  before @a position in constant time.
       *
       *  Undefined if @a position is in [first,last).
       */
      void
      splice(iterator __position, list&, iterator __first, iterator __last)
      {
	if (__first != __last)
	  this->_M_transfer(__position, __first, __last);
      }

      /**
       *  @brief  Remove all elements equal to value.
       *  @param  value  The value to remove.
       *
       *  Removes every element in the list equal to @a value.
       *  Remaining elements stay in list order.  Note that this
       *  function only erases the elements, and that if the elements
       *  themselves are pointers, the pointed-to memory is not
       *  touched in any way.  Managing the pointer is the user's
       *  responsibilty.
       */
      void
      remove(const _Tp& __value);

      /**
       *  @brief  Remove all elements satisfying a predicate.
       *  @param  Predicate  Unary predicate function or object.
       *
       *  Removes every element in the list for which the predicate
       *  returns true.  Remaining elements stay in list order.  Note
       *  that this function only erases the elements, and that if the
       *  elements themselves are pointers, the pointed-to memory is
       *  not touched in any way.  Managing the pointer is the user's
       *  responsibilty.
       */
      template<typename _Predicate>
      void
      remove_if(_Predicate);

      /**
       *  @brief  Remove consecutive duplicate elements.
       *
       *  For each consecutive set of elements with the same value,
       *  remove all but the first one.  Remaining elements stay in
       *  list order.  Note that this function only erases the
       *  elements, and that if the elements themselves are pointers,
       *  the pointed-to memory is not touched in any way.  Managing
       *  the pointer is the user's responsibilty.
       */
      void
      unique();

      /**
       *  @brief  Remove consecutive elements satisfying a predicate.
       *  @param  BinaryPredicate  Binary predicate function or object.
       *
       *  For each consecutive set of elements [first,last) that
       *  satisfy predicate(first,i) where i is an iterator in
       *  [first,last), remove all but the first one.  Remaining
       *  elements stay in list order.  Note that this function only
       *  erases the elements, and that if the elements themselves are
       *  pointers, the pointed-to memory is not touched in any way.
       *  Managing the pointer is the user's responsibilty.
       */
      template<typename _BinaryPredicate>
        void
        unique(_BinaryPredicate);

      /**
       *  @brief  Merge sorted lists.
       *  @param  x  Sorted list to merge.
       *
       *  Assumes that both @a x and this list are sorted according to
       *  operator<().  Merges elements of @a x into this list in
       *  sorted order, leaving @a x empty when complete.  Elements in
       *  this list precede elements in @a x that are equal.
       */
      void
      merge(list& __x);

      /**
       *  @brief  Merge sorted lists according to comparison function.
       *  @param  x  Sorted list to merge.
       *  @param StrictWeakOrdering Comparison function definining
       *  sort order.
       *
       *  Assumes that both @a x and this list are sorted according to
       *  StrictWeakOrdering.  Merges elements of @a x into this list
       *  in sorted order, leaving @a x empty when complete.  Elements
       *  in this list precede elements in @a x that are equivalent
       *  according to StrictWeakOrdering().
       */
      template<typename _StrictWeakOrdering>
        void
        merge(list&, _StrictWeakOrdering);

      /**
       *  @brief  Reverse the elements in list.
       *
       *  Reverse the order of elements in the list in linear time.
       */
      void
      reverse()
      { this->_M_impl._M_node.reverse(); }

      /**
       *  @brief  Sort the elements.
       *
       *  Sorts the elements of this list in NlogN time.  Equivalent
       *  elements remain in list order.
       */
      void
      sort();

      /**
       *  @brief  Sort the elements according to comparison function.
       *
       *  Sorts the elements of this list in NlogN time.  Equivalent
       *  elements remain in list order.
       */
      template<typename _StrictWeakOrdering>
        void
        sort(_StrictWeakOrdering);

    protected:
      // Internal assign functions follow.

      // Called by the range assign to implement [23.1.1]/9
      template<typename _Integer>
        void
        _M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
        {
	  _M_fill_assign(static_cast<size_type>(__n),
			 static_cast<value_type>(__val));
	}

      // Called by the range assign to implement [23.1.1]/9
      template<typename _InputIterator>
        void
        _M_assign_dispatch(_InputIterator __first, _InputIterator __last,
			   __false_type);

      // Called by assign(n,t), and the range assign when it turns out
      // to be the same thing.
      void
      _M_fill_assign(size_type __n, const value_type& __val);


      // Internal insert functions follow.

      // Called by the range insert to implement [23.1.1]/9
      template<typename _Integer>
        void
        _M_insert_dispatch(iterator __pos, _Integer __n, _Integer __x,
			   __true_type)
        {
	  _M_fill_insert(__pos, static_cast<size_type>(__n),
			 static_cast<value_type>(__x));
	}

      // Called by the range insert to implement [23.1.1]/9
      template<typename _InputIterator>
        void
        _M_insert_dispatch(iterator __pos,
			   _InputIterator __first, _InputIterator __last,
			   __false_type)
        {
	  for ( ; __first != __last; ++__first)
	    _M_insert(__pos, *__first);
	}

      // Called by insert(p,n,x), and the range insert when it turns out
      // to be the same thing.
      void
      _M_fill_insert(iterator __pos, size_type __n, const value_type& __x)
      {
	for ( ; __n > 0; --__n)
	  _M_insert(__pos, __x);
      }


      // Moves the elements from [first,last) before position.
      void
      _M_transfer(iterator __position, iterator __first, iterator __last)
      { __position._M_node->transfer(__first._M_node,__last._M_node); }

      // Inserts new element at position given and with value given.
      void
      _M_insert(iterator __position, const value_type& __x)
      {
        _Node* __tmp = _M_create_node(__x);
        __tmp->hook(__position._M_node);
      }

      // Erases element at position given.
      void
      _M_erase(iterator __position)
      {
        __position._M_node->unhook();
        _Node* __n = static_cast<_Node*>(__position._M_node);
        std::_Destroy(&__n->_M_data);
        _M_put_node(__n);
      }
    };

  /**
   *  @brief  List equality comparison.
   *  @param  x  A %list.
   *  @param  y  A %list of the same type as @a x.
   *  @return  True iff the size and elements of the lists are equal.
   *
   *  This is an equivalence relation.  It is linear in the size of
   *  the lists.  Lists are considered equivalent if their sizes are
   *  equal, and if corresponding elements compare equal.
  */
  template<typename _Tp, typename _Alloc>
    inline bool
    operator==(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
    {
      typedef typename list<_Tp,_Alloc>::const_iterator const_iterator;
      const_iterator __end1 = __x.end();
      const_iterator __end2 = __y.end();

      const_iterator __i1 = __x.begin();
      const_iterator __i2 = __y.begin();
      while (__i1 != __end1 && __i2 != __end2 && *__i1 == *__i2)
	{
	  ++__i1;
	  ++__i2;
	}
      return __i1 == __end1 && __i2 == __end2;
    }

  /**
   *  @brief  List ordering relation.
   *  @param  x  A %list.
   *  @param  y  A %list of the same type as @a x.
   *  @return  True iff @a x is lexicographically less than @a y.
   *
   *  This is a total ordering relation.  It is linear in the size of the
   *  lists.  The elements must be comparable with @c <.
   *
   *  See std::lexicographical_compare() for how the determination is made.
  */
  template<typename _Tp, typename _Alloc>
    inline bool
    operator<(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
    { return std::lexicographical_compare(__x.begin(), __x.end(),
					  __y.begin(), __y.end()); }

  /// Based on operator==
  template<typename _Tp, typename _Alloc>
    inline bool
    operator!=(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
    { return !(__x == __y); }

  /// Based on operator<
  template<typename _Tp, typename _Alloc>
    inline bool
    operator>(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
    { return __y < __x; }

  /// Based on operator<
  template<typename _Tp, typename _Alloc>
    inline bool
    operator<=(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
    { return !(__y < __x); }

  /// Based on operator<
  template<typename _Tp, typename _Alloc>
    inline bool
    operator>=(const list<_Tp,_Alloc>& __x, const list<_Tp,_Alloc>& __y)
    { return !(__x < __y); }

  /// See std::list::swap().
  template<typename _Tp, typename _Alloc>
    inline void
    swap(list<_Tp, _Alloc>& __x, list<_Tp, _Alloc>& __y)
    { __x.swap(__y); }
} // namespace std

#endif /* _LIST_H */