static boolean shift_sign(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "shift_sign")) return false;
    if (!nextTokenIsFast(b, T_GT, T_LT)) return false;
    boolean r;
    r = left_shift_sign(b, l + 1);
    if (!r) r = right_shift_unsigned_sign(b, l + 1);
    if (!r) r = right_shift_sign(b, l + 1);
    return r;
  }
static boolean shift_sign(PsiBuilder b, int l)