static boolean parse_root_(IElementType t, PsiBuilder b, int l) {
    boolean r;
    if (t == EXPRESSION) {
      r = expression(b, l + 1, -1);
    }
    else {
      r = root(b, l + 1);
    }
    return r;
  }
static boolean parse_root_(IElementType t, PsiBuilder b, int l)