1/*	$NetBSD: rdatasetiter.c,v 1.2.6.1 2012/06/05 21:15:02 bouyer Exp $	*/
2
3/*
4 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 1999-2001  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: rdatasetiter.c,v 1.16 2007/06/19 23:47:16 tbox Exp  */
21
22/*! \file */
23
24#include <config.h>
25
26#include <stddef.h>
27
28#include <isc/util.h>
29
30#include <dns/rdataset.h>
31#include <dns/rdatasetiter.h>
32
33void
34dns_rdatasetiter_destroy(dns_rdatasetiter_t **iteratorp) {
35	/*
36	 * Destroy '*iteratorp'.
37	 */
38
39	REQUIRE(iteratorp != NULL);
40	REQUIRE(DNS_RDATASETITER_VALID(*iteratorp));
41
42	(*iteratorp)->methods->destroy(iteratorp);
43
44	ENSURE(*iteratorp == NULL);
45}
46
47isc_result_t
48dns_rdatasetiter_first(dns_rdatasetiter_t *iterator) {
49	/*
50	 * Move the rdataset cursor to the first rdataset at the node (if any).
51	 */
52
53	REQUIRE(DNS_RDATASETITER_VALID(iterator));
54
55	return (iterator->methods->first(iterator));
56}
57
58isc_result_t
59dns_rdatasetiter_next(dns_rdatasetiter_t *iterator) {
60	/*
61	 * Move the rdataset cursor to the next rdataset at the node (if any).
62	 */
63
64	REQUIRE(DNS_RDATASETITER_VALID(iterator));
65
66	return (iterator->methods->next(iterator));
67}
68
69void
70dns_rdatasetiter_current(dns_rdatasetiter_t *iterator,
71			 dns_rdataset_t *rdataset)
72{
73	/*
74	 * Return the current rdataset.
75	 */
76
77	REQUIRE(DNS_RDATASETITER_VALID(iterator));
78	REQUIRE(DNS_RDATASET_VALID(rdataset));
79	REQUIRE(! dns_rdataset_isassociated(rdataset));
80
81	iterator->methods->current(iterator, rdataset);
82}
83