1 /* $NetBSD: rdatasetiter.c,v 1.3 2020/05/24 19:46:23 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * This Source Code Form is subject to the terms of the Mozilla Public 7 * License, v. 2.0. If a copy of the MPL was not distributed with this 8 * file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 * 10 * See the COPYRIGHT file distributed with this work for additional 11 * information regarding copyright ownership. 12 */ 13 14 /*! \file */ 15 16 #include <stddef.h> 17 18 #include <isc/util.h> 19 20 #include <dns/rdataset.h> 21 #include <dns/rdatasetiter.h> 22 23 void 24 dns_rdatasetiter_destroy(dns_rdatasetiter_t **iteratorp) { 25 /* 26 * Destroy '*iteratorp'. 27 */ 28 29 REQUIRE(iteratorp != NULL); 30 REQUIRE(DNS_RDATASETITER_VALID(*iteratorp)); 31 32 (*iteratorp)->methods->destroy(iteratorp); 33 34 ENSURE(*iteratorp == NULL); 35 } 36 37 isc_result_t 38 dns_rdatasetiter_first(dns_rdatasetiter_t *iterator) { 39 /* 40 * Move the rdataset cursor to the first rdataset at the node (if any). 41 */ 42 43 REQUIRE(DNS_RDATASETITER_VALID(iterator)); 44 45 return (iterator->methods->first(iterator)); 46 } 47 48 isc_result_t 49 dns_rdatasetiter_next(dns_rdatasetiter_t *iterator) { 50 /* 51 * Move the rdataset cursor to the next rdataset at the node (if any). 52 */ 53 54 REQUIRE(DNS_RDATASETITER_VALID(iterator)); 55 56 return (iterator->methods->next(iterator)); 57 } 58 59 void 60 dns_rdatasetiter_current(dns_rdatasetiter_t *iterator, 61 dns_rdataset_t *rdataset) { 62 /* 63 * Return the current rdataset. 64 */ 65 66 REQUIRE(DNS_RDATASETITER_VALID(iterator)); 67 REQUIRE(DNS_RDATASET_VALID(rdataset)); 68 REQUIRE(!dns_rdataset_isassociated(rdataset)); 69 70 iterator->methods->current(iterator, rdataset); 71 } 72