package com.jclark.xsl.expr;

import com.jclark.xsl.om.*;

public class FollowingNodeIterator implements NodeIterator {
  private NodeIterator iter;
  private Node parent;

  public FollowingNodeIterator(Node node) {
    if (node.getType() == Node.ATTRIBUTE)
      node = node.getParent();
    parent = node.getParent();
    // Don't blow up on the root node
    if (parent == null)
      parent = node;	
    iter = node.getFollowingSiblings();
  }

  public Node next() throws XSLException {
    for (;;) {
      Node node = iter.next();
      if (node != null) {
	parent = node;
	iter = node.getChildren();
	return node;
      }
      else {
	iter = parent.getFollowingSiblings();
	node = parent.getParent();
	if (node == null)
	  break;
	parent = node;
      }
    }
    return null;
  }
}