public static boolean expressionSegment(PsiBuilder b, int l) {
    if (!recursion_guard_(b, l, "expressionSegment")) return false;
    if (!nextTokenIs(b, LBRACKET)) return false;
    boolean r;
    Marker m = enter_section_(b);
    r = consumeToken(b, LBRACKET);
    r = r && nestedExpression_(b, l + 1);
    r = r && consumeToken(b, RBRACKET);
    exit_section_(b, m, EXPRESSION_SEGMENT, r);
    return r;
  }
public static boolean expressionSegment(PsiBuilder b, int l)