protected CommonAST(CommonAST another)
{
// don't include child/sibling pointers in Clone()/dup()
//down = another.down;
//right = another.right;
ttype = another.ttype;
text = (another.text == null) ? null : String.Copy(another.text);
}
protected CommonAST(CommonAST another)
{
// don't include child/sibling pointers in Clone()/dup()
//down = another.down;
//right = another.right;
ttype = another.ttype;
text = (another.text==null) ? null : String.Copy(another.text);
}