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      1 /*	$NetBSD: statement.h,v 1.3 2022/04/03 01:10:58 christos Exp $	*/
      2 
      3 /* statement.h
      4 
      5    Definitions for executable statements... */
      6 
      7 /*
      8  * Copyright (C) 2004-2022 Internet Systems Consortium, Inc. ("ISC")
      9  * Copyright (c) 1996-2003 by Internet Software Consortium
     10  *
     11  * This Source Code Form is subject to the terms of the Mozilla Public
     12  * License, v. 2.0. If a copy of the MPL was not distributed with this
     13  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
     16  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     17  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
     18  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     19  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     20  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
     21  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     22  *
     23  *   Internet Systems Consortium, Inc.
     24  *   PO Box 360
     25  *   Newmarket, NH 03857 USA
     26  *   <info (at) isc.org>
     27  *   https://www.isc.org/
     28  *
     29  */
     30 
     31 struct executable_statement {
     32 	int refcnt;
     33 	struct executable_statement *next;
     34 	enum statement_op {
     35 		null_statement,
     36 		if_statement,
     37 		add_statement,
     38 		eval_statement,
     39 		break_statement,
     40 		default_option_statement,
     41 		supersede_option_statement,
     42 		append_option_statement,
     43 		prepend_option_statement,
     44 		send_option_statement,
     45 		statements_statement,
     46 		on_statement,
     47 		switch_statement,
     48 		case_statement,
     49 		default_statement,
     50 		set_statement,
     51 		unset_statement,
     52 		let_statement,
     53 		define_statement,
     54 		log_statement,
     55 		return_statement,
     56 		execute_statement,
     57 		vendor_opt_statement
     58 	} op;
     59 	union {
     60 		struct {
     61 			struct executable_statement *tc, *fc;
     62 			struct expression *expr;
     63 		} ie;
     64 		struct expression *eval;
     65 		struct expression *retval;
     66 		struct class *add;
     67 		struct option_cache *option;
     68 		struct option_cache *supersede;
     69 		struct option_cache *prepend;
     70 		struct option_cache *append;
     71 		struct executable_statement *statements;
     72 		struct {
     73 			int evtypes;
     74 #			define ON_COMMIT  1
     75 #			define ON_EXPIRY  2
     76 #			define ON_RELEASE 4
     77 #			define ON_TRANSMISSION 8
     78 			struct executable_statement *statements;
     79 		} on;
     80 		struct {
     81 			struct expression *expr;
     82 			struct executable_statement *statements;
     83 		} s_switch;
     84 		struct expression *c_case;
     85 		struct {
     86 			char *name;
     87 			struct expression *expr;
     88 			struct executable_statement *statements;
     89 		} set, let;
     90 		char *unset;
     91 		struct {
     92 			enum {
     93 				log_priority_fatal,
     94 				log_priority_error,
     95 				log_priority_debug,
     96 				log_priority_info
     97 			} priority;
     98 			struct expression *expr;
     99 		} log;
    100 		struct {
    101 			char *command;
    102 			struct expression *arglist;
    103 			int argc;
    104 		} execute;
    105 	} data;
    106 };
    107