def p_real_inport_list(self, p):
"""real_inport_list : inport_list COMMA real_inport
| real_inport"""
if len(p) == 2:
p[0] = ast.PortList()
p[0].add_child(p[1])
else:
p[1].add_child(p[3])
p[0] = p[1]
def p_inportlist(self, p):
"""inportlist : inportlist COMMA inport
| inport COMMA inport"""
if type(p[1]) is ast.PortList:
p[1].add_child(p[3])
p[0] = p[1]
else:
p[0] = ast.PortList()
p[0].add_child(p[1])
p[0].add_child(p[3])