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