How to use the gprof2dot.XmlParser function in gprof2dot

function_name, file, line = match.groups()
                trace += [(function_name, file, line)]

        self.traces[int(tid)] = trace

    def parse_samples(self):
        self.consume()
        self.consume()

        while not self.lookahead().startswith('CPU'):
            rank, percent_self, percent_accum, count, traceid, method = self.lookahead().split()
            self.samples[int(traceid)] = (int(count), method)
            self.consume()


class SysprofParser(XmlParser):

    def __init__(self, stream):
        XmlParser.__init__(self, stream)

    def parse(self):
        objects = {}
        nodes = {}

        self.element_start('profile')
        while self.token.type == XML_ELEMENT_START:
            if self.token.name_or_data == 'objects':
                assert not objects
                objects = self.parse_items('objects')
            elif self.token.name_or_data == 'nodes':
                assert not nodes
                nodes = self.parse_items('nodes')

def __init__(self, stream):
        XmlParser.__init__(self, stream)