private static boolean paren_list_1(PsiBuilder b, int l, Parser _item) {
    if (!recursion_guard_(b, l, "paren_list_1")) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_);
    r = consumeToken(b, T_LPAREN);
    p = r; // pin = 1
    r = r && report_error_(b, paren_list_inner(b, l + 1, _item));
    r = p && paren_list_1_2(b, l + 1) && r;
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
private static boolean paren_list_1(PsiBuilder b, int l, Parser _item)