expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1);
expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2);
expr->data = constraintExprData_binaryExprSetExpr1 (expr->data, expr1);
expr->data = constraintExprData_binaryExprSetExpr2 (expr->data, expr2);