def parse_binary(self, expr1, token, p):
tag = token.tag
q = binary_ops[tag]
if q < p:
return None
self.consume()
if tag not in right_binary_ops:
q += 1
expr2 = self.parse_exp(q)
# flatten or associate
if tag in nonassoc_binary_ops and expr1.get_head_name() == tag and not expr1.parenthesised:
self.tokeniser.sntx_message(token.pos)
raise InvalidSyntaxError()
result = Node(tag, expr1, expr2)
if tag in flat_binary_ops:
result.flatten()
return result
def parse_binary(self, expr1, token, p):
tag = token.tag
q = binary_ops[tag]
if q < p:
return None
self.consume()
if tag not in right_binary_ops:
q += 1
expr2 = self.parse_exp(q)
# flatten or associate
if tag in nonassoc_binary_ops and expr1.get_head_name(
) == tag and not expr1.parenthesised:
self.tokeniser.sntx_message(token.pos)
raise InvalidSyntaxError()
result = Node(tag, expr1, expr2)
if tag in flat_binary_ops:
result.flatten()
return result
