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* Portions Copyright (C) Internet Systems Consortium, Inc. ("ISC")

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* This Source Code Form is subject to the terms of the Mozilla Public

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* License, v. 2.0. If a copy of the MPL was not distributed with this

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* file, you can obtain one at https://mozilla.org/MPL/2.0/.

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* See the COPYRIGHT file distributed with this work for additional

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* information regarding copyright ownership.

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* Permission to use, copy, modify, and/or distribute this software for any

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* purpose with or without fee is hereby granted, provided that the above

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* copyright notice and this permission notice appear in all copies.

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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL

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* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES

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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY

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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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#ifndef ISCCC_SEXPR_H

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#define ISCCC_SEXPR_H 1

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/*! \file isccc/sexpr.h */

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#include <stdbool.h>

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#include <stdio.h>

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#include <isc/lang.h>

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#include <isccc/types.h>

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ISC_LANG_BEGINDECLS

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/*% dotted pair structure */

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struct isccc_dottedpair {

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isccc_sexpr_t *car;

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isccc_sexpr_t *cdr;

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};

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/*% iscc_sexpr structure */

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struct isccc_sexpr {

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unsigned int type;

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union {

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char * as_string;

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isccc_dottedpair_t as_dottedpair;

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isccc_region_t as_region;

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} value;

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};

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#define ISCCC_SEXPRTYPE_NONE 0x00 /*%< Illegal. */

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#define ISCCC_SEXPRTYPE_T 0x01

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#define ISCCC_SEXPRTYPE_STRING 0x02

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#define ISCCC_SEXPRTYPE_DOTTEDPAIR 0x03

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#define ISCCC_SEXPRTYPE_BINARY 0x04

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#define ISCCC_SEXPR_CAR(s) (s)->value.as_dottedpair.car

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#define ISCCC_SEXPR_CDR(s) (s)->value.as_dottedpair.cdr

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isccc_sexpr_t *

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isccc_sexpr_cons(isccc_sexpr_t *car, isccc_sexpr_t *cdr);

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isccc_sexpr_t *

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isccc_sexpr_tconst(void);

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isccc_sexpr_t *

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isccc_sexpr_fromstring(const char *str);

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isccc_sexpr_t *

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isccc_sexpr_frombinary(const isccc_region_t *region);

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void

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isccc_sexpr_free(isccc_sexpr_t **sexprp);

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void

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isccc_sexpr_print(isccc_sexpr_t *sexpr, FILE *stream);

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isccc_sexpr_t *

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isccc_sexpr_car(isccc_sexpr_t *list);

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isccc_sexpr_t *

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isccc_sexpr_cdr(isccc_sexpr_t *list);

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void

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isccc_sexpr_setcar(isccc_sexpr_t *pair, isccc_sexpr_t *car);

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void

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isccc_sexpr_setcdr(isccc_sexpr_t *pair, isccc_sexpr_t *cdr);

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isccc_sexpr_t *

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isccc_sexpr_addtolist(isccc_sexpr_t **l1p, isccc_sexpr_t *l2);

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bool

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isccc_sexpr_listp(isccc_sexpr_t *sexpr);

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bool

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isccc_sexpr_emptyp(isccc_sexpr_t *sexpr);

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bool

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isccc_sexpr_stringp(isccc_sexpr_t *sexpr);

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bool

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isccc_sexpr_binaryp(isccc_sexpr_t *sexpr);

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char *

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isccc_sexpr_tostring(isccc_sexpr_t *sexpr);

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isccc_region_t *

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isccc_sexpr_tobinary(isccc_sexpr_t *sexpr);

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ISC_LANG_ENDDECLS

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#endif /* ISCCC_SEXPR_H */

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