1 /* $NetBSD: rdatasetiter.c,v 1.4 2014/12/10 04:37:58 christos 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
33 void
dns_rdatasetiter_destroy(dns_rdatasetiter_t ** iteratorp)34 dns_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
47 isc_result_t
dns_rdatasetiter_first(dns_rdatasetiter_t * iterator)48 dns_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
58 isc_result_t
dns_rdatasetiter_next(dns_rdatasetiter_t * iterator)59 dns_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
69 void
dns_rdatasetiter_current(dns_rdatasetiter_t * iterator,dns_rdataset_t * rdataset)70 dns_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