external/bsd/bind/dist/lib/dns/rdatasetiter.c

   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
  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
  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
  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
  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 }