statement.h

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/* statement.h
 
   Definitions for executable statements... */
 
/*
 * Copyright (c) 2014-2015 by Internet Systems Consortium, Inc. ("ISC")
 * Copyright (c) 2004,2007,2009 by Internet Systems Consortium, Inc. ("ISC")
 * Copyright (c) 1996-2003 by Internet Software Consortium
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 *   Internet Systems Consortium, Inc.
 *   950 Charter Street
 *   Redwood City, CA 94063
 *   <info@isc.org>
 *   https://www.isc.org/
 *
 */
 
struct executable_statement {
        int refcnt;
        struct executable_statement *next;
        enum statement_op {
                null_statement,
                if_statement,
                add_statement,
                eval_statement,
                break_statement,
                default_option_statement,
                supersede_option_statement,
                append_option_statement,
                prepend_option_statement,
                send_option_statement,
                statements_statement,
                on_statement,
                switch_statement,
                case_statement,
                default_statement,
                set_statement,
                unset_statement,
                let_statement,
                define_statement,
                log_statement,
                return_statement,
                execute_statement,
                vendor_opt_statement
        } op;
        union {
                struct {
                        struct executable_statement *tc, *fc;
                        struct expression *expr;
                } ie;
                struct expression *eval;
                struct expression *retval;
                struct class *add;
                struct option_cache *option;
                struct option_cache *supersede;
                struct option_cache *prepend;
                struct option_cache *append;
                struct executable_statement *statements;
                struct {
                        int evtypes;
#                       define ON_COMMIT  1
#                       define ON_EXPIRY  2
#                       define ON_RELEASE 4
#                       define ON_TRANSMISSION 8
                        struct executable_statement *statements;
                } on;
                struct {
                        struct expression *expr;
                        struct executable_statement *statements;
                } s_switch;
                struct expression *c_case;
                struct {
                        char *name;
                        struct expression *expr;
                        struct executable_statement *statements;
                } set, let;
                char *unset;
                struct {
                        enum {
                                log_priority_fatal,
                                log_priority_error,
                                log_priority_debug,
                                log_priority_info
                        } priority;
                        struct expression *expr;
                } log;
                struct {
                        char *command;
                        struct expression *arglist;
                        int argc;
                } execute;
        } data;
};