sax2dtm2.java

来自「JAVA 所有包」· Java 代码 · 共 2,403 行 · 第 1/5 页

    /**
     * Constructor TypedPrecedingIterator
     *
     *
     * @param type The extended type ID being requested.
     */
    public TypedPrecedingIterator(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;

      if (nodeType >= DTM.NTYPES) {
        while (true) {
          node++;

          if (_sp < 0) {
            node = NULL;
            break;
          }
          else if (node >= _stack[_sp]) {
            if (--_sp < 0) {
              node = NULL;
              break;
            }
          }
          else if (_exptype2(node) == nodeType) {
            break;
          }
        }
      }
      else {
        int expType;

        while (true) {
          node++;

          if (_sp < 0) {
            node = NULL;
            break;
          }
          else if (node >= _stack[_sp]) {
            if (--_sp < 0) {
              node = NULL;
              break;
            }
          }
          else {
            expType = _exptype2(node);
            if (expType < DTM.NTYPES) {
              if (expType == nodeType) {
                break;
              }
            }
            else {
              if (m_extendedTypes[expType].getNodeType() == nodeType) {
                break;
              }
            }
          }
        }
      }

      _currentNode = node;

      return (node == NULL) ? NULL : returnNode(makeNodeHandle(node));
    }
  }  // end of TypedPrecedingIterator

  /**
   * Iterator that returns following nodes of for a given node.
   */
  public class FollowingIterator extends InternalAxisIteratorBase
  {
    //DTMAxisTraverser m_traverser; // easier for now

    public FollowingIterator()
    {
      //m_traverser = getAxisTraverser(Axis.FOLLOWING);
    }

    /**
     * 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 = m_traverser.first(node);

        node = makeNodeIdentity(node);

        int first;
        int type = _type2(node);

        if ((DTM.ATTRIBUTE_NODE == type) || (DTM.NAMESPACE_NODE == type))
        {
          node = _parent2(node);
          first = _firstch2(node);

          if (NULL != first) {
            _currentNode = makeNodeHandle(first);
            return resetPosition();
          }
        }

        do
        {
          first = _nextsib2(node);

          if (NULL == first)
            node = _parent2(node);
        }
        while (NULL == first && NULL != node);

        _currentNode = makeNodeHandle(first);

        // _currentNode precedes possible following(node) nodes
        return resetPosition();
      }

      return this;
    }

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

      int node = _currentNode;

      //_currentNode = m_traverser.next(_startNode, _currentNode);
      int current = makeNodeIdentity(node);

      while (true)
      {
        current++;

        int type = _type2(current);
        if (NULL == type) {
          _currentNode = NULL;
          return returnNode(node);
        }

        if (ATTRIBUTE_NODE == type || NAMESPACE_NODE == type)
          continue;

        _currentNode = makeNodeHandle(current);
        return returnNode(node);
      }
    }

  }  // end of FollowingIterator

  /**
   * Iterator that returns following nodes of a given type for a given node.
   */
  public final class TypedFollowingIterator extends FollowingIterator
  {

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

    /**
     * Constructor TypedFollowingIterator
     *
     *
     * @param type The extended type ID being requested.
     */
    public TypedFollowingIterator(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 current;
      int node;
      int type;

      final int nodeType = _nodeType;
      int currentNodeID = makeNodeIdentity(_currentNode);

      if (nodeType >= DTM.NTYPES) {
        do {
          node = currentNodeID;
	  current = node;

          do {
            current++;
            type = _type2(current);
          }
          while (type != NULL && (ATTRIBUTE_NODE == type || NAMESPACE_NODE == type));

          currentNodeID = (type != NULL) ? current : NULL;
        }
        while (node != DTM.NULL && _exptype2(node) != nodeType);
      }
      else {
        do {
          node = currentNodeID;
	  current = node;

          do {
            current++;
            type = _type2(current);
          }
          while (type != NULL && (ATTRIBUTE_NODE == type || NAMESPACE_NODE == type));

          currentNodeID = (type != NULL) ? current : NULL;
        }
        while (node != DTM.NULL
               && (_exptype2(node) != nodeType && _type2(node) != nodeType));
      }

      _currentNode = makeNodeHandle(currentNodeID);
      return (node == DTM.NULL ? DTM.NULL :returnNode(makeNodeHandle(node)));
    }
  }  // end of TypedFollowingIterator

  /**
   * Iterator that returns the ancestors of a given node in document
   * order.  (NOTE!  This was changed from the XSLTC code!)
   */
  public class AncestorIterator extends InternalAxisIteratorBase
  {
    // The initial size of the ancestor array
    private static final int m_blocksize = 32;

    // The array for ancestor nodes. This array will grow dynamically.
    int[] m_ancestors = new int[m_blocksize];

    // Number of ancestor nodes in the array
    int m_size = 0;

    int m_ancestorsPos;

    int m_markedPos;

    /** The real start node for this axes, since _startNode will be adjusted. */
    int m_realStartNode;

    /**
     * Get start to END should 'close' the iterator,
     * i.e. subsequent call to next() should return END.
     *
     * @return The root node of the iteration.
     */
    public int getStartNode()
    {
      return m_realStartNode;
    }

    /**
     * True if this iterator has a reversed axis.
     *
     * @return true since this iterator is a reversed axis.
     */
    public final 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;  // must set to false for any clone

      try
      {
        final AncestorIterator clone = (AncestorIterator) super.clone();

        clone._startNode = _startNode;

        // 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();
      m_realStartNode = node;

      if (_isRestartable)
      {
        int nodeID = makeNodeIdentity(node);
        m_size = 0;

        if (nodeID == DTM.NULL) {
          _currentNode = DTM.NULL;
          m_ancestorsPos = 0;
          return this;
        }

        // Start from the current node's parent if
        // _includeSelf is false.
        if (!_includeSelf) {
          nodeID = _parent2(nodeID);
          node = makeNodeHandle(nodeID);
        }

        _startNode = node;

        while (nodeID != END) {
          //m_ancestors.addElement(node);
          if (m_size >= m_ancestors.length)
          {
            int[] newAncestors = new int[m_size * 2];
            System.arraycopy(m_ancestors, 0, newAncestors, 0, m_ancestors.length);
            m_ancestors = newAncestors;
          }

          m_ancestors[m_size++] = node;
          nodeID = _parent2(nodeID);
          node = makeNodeHandle(nodeID);
        }

        m_ancestorsPos = m_size - 1;

        _currentNode = (m_ancestorsPos>=0)
                               ? m_ancestors[m_ancestorsPos]
                               : DTM.NULL;

        return resetPosition();
      }

      return this;
    }

    /**
     * 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()
    {

      m_ancestorsPos = m_size - 1;

      _currentNode = (m_ancestorsPos >= 0) ? m_ancestors[m_ancestorsPos]
                                         : DTM.NULL;

      return resetPosition();
    }

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

      int next = _currentNode;

      int pos = --m_ancestorsPos;

      _currentNode = (pos >= 0) ? m_ancestors[m_ancestorsPos]
                                : DTM.NULL;

      return returnNode(next);
    }

    public void setMark() {
        m_markedPos = m_ancestorsPos;
    }

    public void gotoMark() {
        m_ancestorsPos = m_markedPos;
        _currentNode = m_ancestorsPos>=0 ? m_ancestors[m_ancestorsPos]
                                         : DTM.NULL;
    }
  }  // end of AncestorIterator

  /**
   * Typed iterator that returns the ancestors of a given node.
   */
  public final class TypedAncestorIterator extends AncestorIterator
  {

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

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

    /**
     * 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();
      m_realStartNode = node;

      if (_isRestartable)
      {
        int nodeID = makeNodeIdentity(node);
        m_size = 0;

        if (nodeID == DTM.NULL) {
          _currentNode = DTM.NULL;
          m_ancestorsPos = 0;
          return this;
        }

        final int nodeType = _nodeType;

        if (!_includeSelf) {
          nodeID = _parent2(nodeID);
          node = makeNodeHandle(nodeID);
        }

        _startNode = node;

        if (nodeType >= DTM.NTYPES) {
          while (nodeID != END) {
            int eType = _exptype2(nodeID);

            if (eType == nodeType) {