docs: def p_conditional_expr(self, p):
          """
          conditional_expr \
              : logical_or_expr
              | logical_or_expr CONDOP assignment_expr COLON assignment_expr
          """
          if len(p) == 2:
              p[0] = p[1]
          else:
              p[0] = ast.Conditional(
                  predicate=p[1], consequent=p[3], alternative=p[5])