def __init__(self, source, index=0, col=0, lno=1):
    self.col = col
    self.index = index
    self.lno = lno
    self.source = source
def __init__(self, source, index=0, col=0, lno=1):
    self.col = col
    self.index = index
    self.lno = lno
    self.source = source