1 files changed, 71 insertions, 0 deletions
diff --git a/lib/dns/rdatasetiter.c b/lib/dns/rdatasetiter.c
new file mode 100644
index 0000000..8e8159f
--- /dev/null
+++ b/lib/dns/rdatasetiter.c
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <stddef.h>
+
+#include <isc/util.h>
+
+#include <dns/rdataset.h>
+#include <dns/rdatasetiter.h>
+
+void
+dns_rdatasetiter_destroy(dns_rdatasetiter_t **iteratorp) {
+	/*
+	 * Destroy '*iteratorp'.
+	 */
+
+	REQUIRE(iteratorp != NULL);
+	REQUIRE(DNS_RDATASETITER_VALID(*iteratorp));
+
+	(*iteratorp)->methods->destroy(iteratorp);
+
+	ENSURE(*iteratorp == NULL);
+}
+
+isc_result_t
+dns_rdatasetiter_first(dns_rdatasetiter_t *iterator) {
+	/*
+	 * Move the rdataset cursor to the first rdataset at the node (if any).
+	 */
+
+	REQUIRE(DNS_RDATASETITER_VALID(iterator));
+
+	return (iterator->methods->first(iterator));
+}
+
+isc_result_t
+dns_rdatasetiter_next(dns_rdatasetiter_t *iterator) {
+	/*
+	 * Move the rdataset cursor to the next rdataset at the node (if any).
+	 */
+
+	REQUIRE(DNS_RDATASETITER_VALID(iterator));
+
+	return (iterator->methods->next(iterator));
+}
+
+void
+dns_rdatasetiter_current(dns_rdatasetiter_t *iterator,
+			 dns_rdataset_t *rdataset) {
+	/*
+	 * Return the current rdataset.
+	 */
+
+	REQUIRE(DNS_RDATASETITER_VALID(iterator));
+	REQUIRE(DNS_RDATASET_VALID(rdataset));
+	REQUIRE(!dns_rdataset_isassociated(rdataset));
+
+	iterator->methods->current(iterator, rdataset);
+}