public void ReplaceBy(Node node)
{
if(parent_node != null)
{
parent_node.ReplaceChild(this, node);
}
}
protected Node CloneNode(Node node)
{
if(node != null)
{
return (Node) node.Clone();
}
return null;
}
protected string ToString(Node node)
{
if(node != null)
{
return node.ToString();
}
return "";
}
internal abstract void ReplaceChild(Node oldChild, Node newChild);
internal abstract void RemoveChild(Node child);
internal void Parent(Node parent_node)
{
this.parent_node = parent_node;
}
