from antlr4.error.ErrorListener import * class Python3ErrorListener(ErrorListener): def __init__(self, output): self.output = output self._symbol = '' def syntaxError(self, recognizer, offendingSymbol, line, column, msg, e): self.output.write(msg) self._symbol = offendingSymbol.text stack = recognizer.getRuleInvocationStack() stack.reverse() print("rule stack: {}".format(str(stack))) print("line {} : {} at {} : {}".format(str(line), str(column), str(offendingSymbol).replace(" ", u'\u23B5'), msg.replace(" ", u'\u23B5'))) @property def symbol(self): return self._symbol def output(self): return self.output