public static boolean case_clause(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "case_clause")) return false;
    boolean r, p;
    Marker m = enter_section_(b, l, _NONE_, CASE_CLAUSE, "<case clause>");
    r = newlines(b, l + 1);
    r = r && pattern(b, l + 1);
    r = r && consumeToken(b, RIGHT_PAREN);
    p = r; // pin = 3
    r = r && report_error_(b, newlines(b, l + 1));
    r = p && case_clause_4(b, l + 1) && r;
    exit_section_(b, l, m, r, p, null);
    return r || p;
  }
public static boolean case_clause(PsiBuilder b, int l)