sax2dtm2.java

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        while ((node = _nextsib2(node)) != DTM.NULL && _exptype2(node) < DTM.NTYPES) {}
      }

      _currentNode = node;

      return (node == DTM.NULL)
                      ? DTM.NULL
                      : returnNode(makeNodeHandle(node));
    }

  }  // end of TypedFollowingSiblingIterator

  /**
   * Iterator that returns attribute nodes (of what nodes?)
   */
  public final class AttributeIterator extends InternalAxisIteratorBase
  {

    // assumes caller will pass element nodes

    /**
     * Set start to END should 'close' the iterator,
     * i.e. subsequent call to next() should return END.
     *
     * @param node Sets the root of the iteration.
     *
     * @return A DTMAxisIterator set to the start of the iteration.
     */
    public DTMAxisIterator setStartNode(int node)
    {
//%HZ%: Added reference to DTMDefaultBase.ROOTNODE back in, temporarily
      if (node == DTMDefaultBase.ROOTNODE)
        node = getDocument();
      if (_isRestartable)
      {
        _startNode = node;
        _currentNode = getFirstAttributeIdentity(makeNodeIdentity(node));

        return resetPosition();
      }

      return this;
    }

    /**
     * Get the next node in the iteration.
     *
     * @return The next node handle in the iteration, or END.
     */
    public int next()
    {

      final int node = _currentNode;

      if (node != NULL) {
        _currentNode = getNextAttributeIdentity(node);
        return returnNode(makeNodeHandle(node));
      }

      return NULL;
    }
  }  // end of AttributeIterator

  /**
   * Iterator that returns attribute nodes of a given type
   */
  public final class TypedAttributeIterator extends InternalAxisIteratorBase
  {

    /** The extended type ID that was requested. */
    private final int _nodeType;

    /**
     * Constructor TypedAttributeIterator
     *
     *
     * @param nodeType The extended type ID that is requested.
     */
    public TypedAttributeIterator(int nodeType)
    {
      _nodeType = nodeType;
    }

    // assumes caller will pass element nodes

    /**
     * Set start to END should 'close' the iterator,
     * i.e. subsequent call to next() should return END.
     *
     * @param node Sets the root of the iteration.
     *
     * @return A DTMAxisIterator set to the start of the iteration.
     */
    public DTMAxisIterator setStartNode(int node)
    {
      if (_isRestartable)
      {
        _startNode = node;

        _currentNode = getTypedAttribute(node, _nodeType);

        return resetPosition();
      }

      return this;
    }

    /**
     * Get the next node in the iteration.
     *
     * @return The next node handle in the iteration, or END.
     */
    public int next()
    {

      final int node = _currentNode;

      // singleton iterator, since there can only be one attribute of
      // a given type.
      _currentNode = NULL;

      return returnNode(node);
    }
  }  // end of TypedAttributeIterator

  /**
   * Iterator that returns preceding siblings of a given node
   */
  public class PrecedingSiblingIterator extends InternalAxisIteratorBase
  {

    /**
     * The node identity of _startNode for this iterator
     */
    protected int _startNodeID;

    /**
     * True if this iterator has a reversed axis.
     *
     * @return true.
     */
    public boolean isReverse()
    {
      return true;
    }

    /**
     * Set start to END should 'close' the iterator,
     * i.e. subsequent call to next() should return END.
     *
     * @param node Sets the root of the iteration.
     *
     * @return A DTMAxisIterator set to the start of the iteration.
     */
    public DTMAxisIterator setStartNode(int node)
    {
//%HZ%: Added reference to DTMDefaultBase.ROOTNODE back in, temporarily
      if (node == DTMDefaultBase.ROOTNODE)
        node = getDocument();
      if (_isRestartable)
      {
        _startNode = node;
        node = _startNodeID = makeNodeIdentity(node);

        if(node == NULL)
        {
          _currentNode = node;
          return resetPosition();
        }

        int type = _type2(node);
        if(ExpandedNameTable.ATTRIBUTE == type
           || ExpandedNameTable.NAMESPACE == type )
        {
          _currentNode = node;
        }
        else
        {
          // Be careful to handle the Document node properly
          _currentNode = _parent2(node);
          if(NULL!=_currentNode)
            _currentNode = _firstch2(_currentNode);
          else
            _currentNode = node;
        }

        return resetPosition();
      }

      return this;
    }

    /**
     * Get the next node in the iteration.
     *
     * @return The next node handle in the iteration, or END.
     */
    public int next()
    {

      if (_currentNode == _startNodeID || _currentNode == DTM.NULL)
      {
        return NULL;
      }
      else
      {
        final int node = _currentNode;
        _currentNode = _nextsib2(node);

        return returnNode(makeNodeHandle(node));
      }
    }
  }  // end of PrecedingSiblingIterator

  /**
   * Iterator that returns preceding siblings of a given type for
   * a given node
   */
  public final class TypedPrecedingSiblingIterator
          extends PrecedingSiblingIterator
  {

    /** The extended type ID that was requested. */
    private final int _nodeType;

    /**
     * Constructor TypedPrecedingSiblingIterator
     *
     *
     * @param type The extended type ID being requested.
     */
    public TypedPrecedingSiblingIterator(int type)
    {
      _nodeType = type;
    }

    /**
     * Get the next node in the iteration.
     *
     * @return The next node handle in the iteration, or END.
     */
    public int next()
    {
      int node = _currentNode;

      final int nodeType = _nodeType;
      final int startNodeID = _startNodeID;

      if (nodeType != DTM.ELEMENT_NODE) {
        while (node != NULL && node != startNodeID && _exptype2(node) != nodeType) {
          node = _nextsib2(node);
        }
      }
      else {
        while (node != NULL && node != startNodeID && _exptype2(node) < DTM.NTYPES) {
          node = _nextsib2(node);
        }
      }

      if (node == DTM.NULL || node == startNodeID) {
        _currentNode = NULL;
        return NULL;
      }
      else {
        _currentNode = _nextsib2(node);
        return returnNode(makeNodeHandle(node));
      }
    }

    /**
     * Return the index of the last node in this iterator.
     */
    public int getLast()
    {
      if (_last != -1)
        return _last;

      setMark();

      int node = _currentNode;
      final int nodeType = _nodeType;
      final int startNodeID = _startNodeID;

      int last = 0;
      if (nodeType != DTM.ELEMENT_NODE) {
        while (node != NULL && node != startNodeID) {
          if (_exptype2(node) == nodeType) {
            last++;
          }
          node = _nextsib2(node);
        }
      }
      else {
        while (node != NULL && node != startNodeID) {
          if (_exptype2(node) >= DTM.NTYPES) {
            last++;
          }
          node = _nextsib2(node);
        }
      }

      gotoMark();

      return (_last = last);
    }
  }  // end of TypedPrecedingSiblingIterator

  /**
   * Iterator that returns preceding nodes of a given node.
   * This includes the node set {root+1, start-1}, but excludes
   * all ancestors, attributes, and namespace nodes.
   */
  public class PrecedingIterator extends InternalAxisIteratorBase
  {

    /** The max ancestors, but it can grow... */
    private final int _maxAncestors = 8;

    /**
     * The stack of start node + ancestors up to the root of the tree,
     *  which we must avoid.
     */
    protected int[] _stack = new int[_maxAncestors];

    /** (not sure yet... -sb) */
    protected int _sp, _oldsp;

    protected int _markedsp, _markedNode, _markedDescendant;

    /* _currentNode precedes candidates.  This is the identity, not the handle! */

    /**
     * True if this iterator has a reversed axis.
     *
     * @return true since this iterator is a reversed axis.
     */
    public boolean isReverse()
    {
      return true;
    }

    /**
     * Returns a deep copy of this iterator.   The cloned iterator is not reset.
     *
     * @return a deep copy of this iterator.
     */
    public DTMAxisIterator cloneIterator()
    {
      _isRestartable = false;

      try
      {
        final PrecedingIterator clone = (PrecedingIterator) super.clone();
        final int[] stackCopy = new int[_stack.length];
        System.arraycopy(_stack, 0, stackCopy, 0, _stack.length);

        clone._stack = stackCopy;

        // return clone.reset();
        return clone;
      }
      catch (CloneNotSupportedException e)
      {
        throw new DTMException(XMLMessages.createXMLMessage(XMLErrorResources.ER_ITERATOR_CLONE_NOT_SUPPORTED, null)); //"Iterator clone not supported.");
      }
    }

    /**
     * Set start to END should 'close' the iterator,
     * i.e. subsequent call to next() should return END.
     *
     * @param node Sets the root of the iteration.
     *
     * @return A DTMAxisIterator set to the start of the iteration.
     */
    public DTMAxisIterator setStartNode(int node)
    {
//%HZ%: Added reference to DTMDefaultBase.ROOTNODE back in, temporarily
      if (node == DTMDefaultBase.ROOTNODE)
        node = getDocument();
      if (_isRestartable)
      {
        node = makeNodeIdentity(node);

        // iterator is not a clone
        int parent, index;

       if (_type2(node) == DTM.ATTRIBUTE_NODE)
         node = _parent2(node);

        _startNode = node;
        _stack[index = 0] = node;

       	parent=node;
	while ((parent = _parent2(parent)) != NULL)
	{
	  if (++index == _stack.length)
	  {
	    final int[] stack = new int[index*2];
	    System.arraycopy(_stack, 0, stack, 0, index);
	    _stack = stack;
	  }
	  _stack[index] = parent;
        }

        if(index>0)
	  --index; // Pop actual root node (if not start) back off the stack

        _currentNode=_stack[index]; // Last parent before root node

        _oldsp = _sp = index;

        return resetPosition();
      }

      return this;
    }

    /**
     * Get the next node in the iteration.
     *
     * @return The next node handle in the iteration, or END.
     */
    public int next()
    {
    	// Bugzilla 8324: We were forgetting to skip Attrs and NS nodes.
    	// Also recoded the loop controls for clarity and to flatten out
    	// the tail-recursion.
   	for(++_currentNode; _sp>=0; ++_currentNode)
   	{
   	  if(_currentNode < _stack[_sp])
   	  {
   	    int type = _type2(_currentNode);
   	    if(type != ATTRIBUTE_NODE && type != NAMESPACE_NODE)
   	      return returnNode(makeNodeHandle(_currentNode));
   	  }
   	  else
   	    --_sp;
   	}
   	return NULL;
    }

    // redefine DTMAxisIteratorBase's reset

    /**
     * Resets the iterator to the last start node.
     *
     * @return A DTMAxisIterator, which may or may not be the same as this
     *         iterator.
     */
    public DTMAxisIterator reset()
    {

      _sp = _oldsp;

      return resetPosition();
    }

    public void setMark() {
        _markedsp = _sp;
        _markedNode = _currentNode;
        _markedDescendant = _stack[0];
    }

    public void gotoMark() {
        _sp = _markedsp;
        _currentNode = _markedNode;
    }
  }  // end of PrecedingIterator

  /**
   * Iterator that returns preceding nodes of agiven type for a
   * given node. This includes the node set {root+1, start-1}, but
   * excludes all ancestors.
   */
  public final class TypedPrecedingIterator extends PrecedingIterator
  {

    /** The extended type ID that was requested. */
    private final int _nodeType;