code: def p_assignment_delay(self, p):
          'assignment : ASSIGN delays lvalue EQUALS delays rvalue SEMICOLON'
          p[0] = Assign(p[3], p[6], p[2], p[5], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1)f p_assignment_delay(self, p):
          'assignment : ASSIGN delays lvalue EQUALS delays rvalue SEMICOLON'
          p[0] = Assign(p[3], p[6], p[2], p[5], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1))
docs: assignment : ASSIGN delays lvalue EQUALS delays rvalue SEMICOLON