{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"check_emission(check_rhs(sess,"}]}
        check_emission(check_rhs(sess, &rhs_tt));
        let rhs_tt = parse_one_tt(rhs_tt, RulePart::Body, sess, node_id, features, edition);
        check_emission(macro_check::check_meta_variables(&sess.psess, node_id, &lhs_tt, &rhs_tt));