contrib/bind-9.2.4rc7/lib/isccc/include/isccc/sexpr.h

   1 /*
   2  * Portions Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Portions Copyright (C) 2001  Internet Software Consortium.
   4  * Portions Copyright (C) 2001  Nominum, Inc.
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
  11  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
  12  * OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY
  13  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 /* $Id: sexpr.h,v 1.3.2.1 2004/03/09 06:12:28 marka Exp $ */
  20
  21 #ifndef ISCCC_SEXPR_H
  22 #define ISCCC_SEXPR_H 1
  23
  24 #include <stdio.h>
  25
  26 #include <isc/lang.h>
  27 #include <isccc/types.h>
  28
  29 ISC_LANG_BEGINDECLS
  30
  31 struct isccc_dottedpair {
  32         isccc_sexpr_t *car;
  33         isccc_sexpr_t *cdr;
  34 };
  35
  36 struct isccc_sexpr {
  37         unsigned int                    type;
  38         union {
  39                 char *                  as_string;
  40                 isccc_dottedpair_t      as_dottedpair;
  41                 isccc_region_t          as_region;
  42         }                               value;
  43 };
  44
  45 #define ISCCC_SEXPRTYPE_NONE            0x00    /* Illegal. */
  46 #define ISCCC_SEXPRTYPE_T                       0x01
  47 #define ISCCC_SEXPRTYPE_STRING          0x02
  48 #define ISCCC_SEXPRTYPE_DOTTEDPAIR      0x03
  49 #define ISCCC_SEXPRTYPE_BINARY          0x04
  50
  51 #define ISCCC_SEXPR_CAR(s)              (s)->value.as_dottedpair.car
  52 #define ISCCC_SEXPR_CDR(s)              (s)->value.as_dottedpair.cdr
  53
  54 isccc_sexpr_t *
  55 isccc_sexpr_cons(isccc_sexpr_t *car, isccc_sexpr_t *cdr);
  56
  57 isccc_sexpr_t *
  58 isccc_sexpr_tconst(void);
  59
  60 isccc_sexpr_t *
  61 isccc_sexpr_fromstring(const char *str);
  62
  63 isccc_sexpr_t *
  64 isccc_sexpr_frombinary(const isccc_region_t *region);
  65
  66 void
  67 isccc_sexpr_free(isccc_sexpr_t **sexprp);
  68
  69 void
  70 isccc_sexpr_print(isccc_sexpr_t *sexpr, FILE *stream);
  71
  72 isccc_sexpr_t *
  73 isccc_sexpr_car(isccc_sexpr_t *list);
  74
  75 isccc_sexpr_t *
  76 isccc_sexpr_cdr(isccc_sexpr_t *list);
  77
  78 void
  79 isccc_sexpr_setcar(isccc_sexpr_t *pair, isccc_sexpr_t *car);
  80
  81 void
  82 isccc_sexpr_setcdr(isccc_sexpr_t *pair, isccc_sexpr_t *cdr);
  83
  84 isccc_sexpr_t *
  85 isccc_sexpr_addtolist(isccc_sexpr_t **l1p, isccc_sexpr_t *l2);
  86
  87 isc_boolean_t
  88 isccc_sexpr_listp(isccc_sexpr_t *sexpr);
  89
  90 isc_boolean_t
  91 isccc_sexpr_emptyp(isccc_sexpr_t *sexpr);
  92
  93 isc_boolean_t
  94 isccc_sexpr_stringp(isccc_sexpr_t *sexpr);
  95
  96 isc_boolean_t
  97 isccc_sexpr_binaryp(isccc_sexpr_t *sexpr);
  98
  99 char *
 100 isccc_sexpr_tostring(isccc_sexpr_t *sexpr);
 101
 102 isccc_region_t *
 103 isccc_sexpr_tobinary(isccc_sexpr_t *sexpr);
 104
 105 ISC_LANG_ENDDECLS
 106
 107 #endif /* ISCCC_SEXPR_H */