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Annotation of 43BSDReno/usr.sbin/htable/parse.y, revision 1.1.1.1

1.1       root        1: %{
                      2: 
                      3: /*
                      4:  * Copyright (c) 1983 Regents of the University of California.
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms are permitted provided
                      8:  * that: (1) source distributions retain this entire copyright notice and
                      9:  * comment, and (2) distributions including binaries display the following
                     10:  * acknowledgement:  ``This product includes software developed by the
                     11:  * University of California, Berkeley and its contributors'' in the
                     12:  * documentation or other materials provided with the distribution and in
                     13:  * all advertising materials mentioning features or use of this software.
                     14:  * Neither the name of the University nor the names of its contributors may
                     15:  * be used to endorse or promote products derived from this software without
                     16:  * specific prior written permission.
                     17:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     18:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     19:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     20:  */
                     21: 
                     22: #ifndef lint
                     23: static char sccsid[] = "@(#)parse.y    5.5 (Berkeley) 6/1/90";
                     24: #endif /* not lint */
                     25: 
                     26: #include "htable.h"
                     27: %}
                     28: 
                     29: %union {
                     30:        int     number;
                     31:        struct  addr *addrlist;
                     32:        struct  name *namelist;
                     33: }
                     34: %start Table
                     35: 
                     36: %token                 END
                     37: %token <number>                NUMBER KEYWORD
                     38: %token <namelist>      NAME
                     39: 
                     40: %type <namelist>       Names Cputype Opsys Protos Proto
                     41: %type <addrlist>       Addresses Address
                     42: %%
                     43: Table  :       Entry
                     44:        |       Table Entry
                     45:        ;
                     46: 
                     47: Entry  :       KEYWORD ':' Addresses ':' Names ':' END
                     48:        = {
                     49:                do_entry($1, $3, $5, NONAME, NONAME, NONAME);
                     50:        }
                     51:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' END
                     52:        = {
                     53:                do_entry($1, $3, $5, $7, NONAME, NONAME);
                     54:        }
                     55:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' END
                     56:        = {
                     57:                do_entry($1, $3, $5, $7, $9, NONAME);
                     58:        }
                     59:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' ':' END
                     60:        = {
                     61:                do_entry($1, $3, $5, $7, $9, NONAME);
                     62:        }
                     63:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' Protos ':' END
                     64:        = {
                     65:                do_entry($1, $3, $5, $7, $9, $11);
                     66:        }
                     67:        |       error END
                     68:        |       END             /* blank line */
                     69:        ;
                     70: 
                     71: Addresses:     Address
                     72:        = {
                     73:                $$ = $1;
                     74:        }
                     75:        |       Address ',' Addresses
                     76:        = {
                     77:                $1->addr_link = $3;
                     78:                $$ = $1;
                     79:        }
                     80:        ;
                     81: 
                     82: Address        :       NUMBER '.' NUMBER '.' NUMBER '.' NUMBER
                     83:        = {
                     84:                char *a;
                     85: 
                     86:                $$ = (struct addr *)malloc(sizeof (struct addr));
                     87:                a = (char *)&($$->addr_val);
                     88:                a[0] = $1; a[1] = $3; a[2] = $5; a[3] = $7;
                     89:                $$->addr_link = NOADDR;
                     90:        }
                     91:        ;
                     92: 
                     93: Names  :       NAME
                     94:        = {
                     95:                $$ = $1;
                     96:        }
                     97:        |       NAME ',' Names
                     98:        = {
                     99:                $1->name_link = $3;
                    100:                $$ = $1;
                    101:        }
                    102:        ;
                    103: 
                    104: Cputype :      /* empty */
                    105:        = {
                    106:                $$ = NONAME;
                    107:        }
                    108:        |       NAME
                    109:        = {
                    110:                $$ = $1;
                    111:        }
                    112:        ;
                    113: 
                    114: Opsys  :       /* empty */
                    115:        = {
                    116:                $$ = NONAME;
                    117:        }
                    118:        |       NAME
                    119:        = {
                    120:                $$ = $1;
                    121:        }
                    122:        ;
                    123: 
                    124: Protos :       Proto
                    125:        = {
                    126:                $$ = $1;
                    127:        }
                    128:        |       Proto ',' Protos
                    129:        = {
                    130:                $1->name_link = $3;
                    131:                $$ = $1;
                    132:        }
                    133:        ;
                    134: 
                    135: Proto  :       NAME
                    136:        = {
                    137:                $$ = $1;
                    138:        }
                    139:        ;
                    140: %%
                    141: 
                    142: #include <stdio.h>
                    143: 
                    144: extern int yylineno;
                    145: 
                    146: yyerror(msg)
                    147:        char *msg;
                    148: {
                    149:        fprintf(stderr, "\"%s\", line %d: %s\n", infile, yylineno, msg);
                    150: }

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