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Annotation of embedaddon/dhcp/includes/statement.h, revision 1.1.1.1

1.1       misho       1: /* statement.h
                      2: 
                      3:    Definitions for executable statements... */
                      4: 
                      5: /*
                      6:  * Copyright (c) 2004,2007,2009 by Internet Systems Consortium, Inc. ("ISC")
                      7:  * Copyright (c) 1996-2003 by Internet Software Consortium
                      8:  *
                      9:  * Permission to use, copy, modify, and distribute this software for any
                     10:  * purpose with or without fee is hereby granted, provided that the above
                     11:  * copyright notice and this permission notice appear in all copies.
                     12:  *
                     13:  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
                     14:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     15:  * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
                     16:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     17:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     18:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
                     19:  * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     20:  *
                     21:  *   Internet Systems Consortium, Inc.
                     22:  *   950 Charter Street
                     23:  *   Redwood City, CA 94063
                     24:  *   <info@isc.org>
                     25:  *   https://www.isc.org/
                     26:  *
                     27:  * This software has been written for Internet Systems Consortium
                     28:  * by Ted Lemon in cooperation with Vixie Enterprises and Nominum, Inc.
                     29:  * To learn more about Internet Systems Consortium, see
                     30:  * ``https://www.isc.org/''.  To learn more about Vixie Enterprises,
                     31:  * see ``http://www.vix.com''.   To learn more about Nominum, Inc., see
                     32:  * ``http://www.nominum.com''.
                     33:  */
                     34: 
                     35: struct executable_statement {
                     36:        int refcnt;
                     37:        struct executable_statement *next;
                     38:        enum statement_op {
                     39:                null_statement,
                     40:                if_statement,
                     41:                add_statement,
                     42:                eval_statement,
                     43:                break_statement,
                     44:                default_option_statement,
                     45:                supersede_option_statement,
                     46:                append_option_statement,
                     47:                prepend_option_statement,
                     48:                send_option_statement,
                     49:                statements_statement,
                     50:                on_statement,
                     51:                switch_statement,
                     52:                case_statement,
                     53:                default_statement,
                     54:                set_statement,
                     55:                unset_statement,
                     56:                let_statement,
                     57:                define_statement,
                     58:                log_statement,
                     59:                return_statement,
                     60:                execute_statement
                     61:        } op;
                     62:        union {
                     63:                struct {
                     64:                        struct executable_statement *tc, *fc;
                     65:                        struct expression *expr;
                     66:                } ie;
                     67:                struct expression *eval;
                     68:                struct expression *retval;
                     69:                struct class *add;
                     70:                struct option_cache *option;
                     71:                struct option_cache *supersede;
                     72:                struct option_cache *prepend;
                     73:                struct option_cache *append;
                     74:                struct executable_statement *statements;
                     75:                struct {
                     76:                        int evtypes;
                     77: #                      define ON_COMMIT  1
                     78: #                      define ON_EXPIRY  2
                     79: #                      define ON_RELEASE 4
                     80: #                      define ON_TRANSMISSION 8
                     81:                        struct executable_statement *statements;
                     82:                } on;
                     83:                struct {
                     84:                        struct expression *expr;
                     85:                        struct executable_statement *statements;
                     86:                } s_switch;
                     87:                struct expression *c_case;
                     88:                struct {
                     89:                        char *name;
                     90:                        struct expression *expr;
                     91:                        struct executable_statement *statements;
                     92:                } set, let;
                     93:                char *unset;
                     94:                struct {
                     95:                        enum {
                     96:                                log_priority_fatal,
                     97:                                log_priority_error,
                     98:                                log_priority_debug,
                     99:                                log_priority_info
                    100:                        } priority;
                    101:                        struct expression *expr;
                    102:                } log;
                    103:                struct {
                    104:                        char *command;
                    105:                        struct expression *arglist;
                    106:                        int argc;
                    107:                } execute;
                    108:        } data;
                    109: };
                    110: