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Annotation of researchv10dc/ipc/internet/htable/parse.y, revision 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
        !             8:  * provided that the above copyright notice and this paragraph are
        !             9:  * duplicated in all such forms and that any documentation,
        !            10:  * advertising materials, and other materials related to such
        !            11:  * distribution and use acknowledge that the software was developed
        !            12:  * by the University of California, Berkeley.  The name of the
        !            13:  * University may not be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)parse.y    5.4 (Berkeley) 6/18/88";
        !            22: #endif /* not lint */
        !            23: #include "htable.h"
        !            24: 
        !            25: #include "y.tab.h"
        !            26: %}
        !            27: 
        !            28: %union {
        !            29:        int     number;
        !            30:        struct  addr *addrlist;
        !            31:        struct  name *namelist;
        !            32: }
        !            33: %start Table
        !            34: 
        !            35: %token                 END
        !            36: %token <number>                NUMBER KEYWORD
        !            37: %token <namelist>      NAME
        !            38: 
        !            39: %type <namelist>       Names Cputype Opsys Protos Proto
        !            40: %type <addrlist>       Addresses Address
        !            41: %%
        !            42: Table  :       Entry
        !            43:        |       Table Entry
        !            44:        ;
        !            45: 
        !            46: Entry  :       KEYWORD ':' Addresses ':' Names ':' END
        !            47:        = {
        !            48:                do_entry($1, $3, $5, NONAME, NONAME, NONAME);
        !            49:        }
        !            50:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' END
        !            51:        = {
        !            52:                do_entry($1, $3, $5, $7, NONAME, NONAME);
        !            53:        }
        !            54:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' END
        !            55:        = {
        !            56:                do_entry($1, $3, $5, $7, $9, NONAME);
        !            57:        }
        !            58:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' ':' END
        !            59:        = {
        !            60:                do_entry($1, $3, $5, $7, $9, NONAME);
        !            61:        }
        !            62:        |       KEYWORD ':' Addresses ':' Names ':' Cputype ':' Opsys ':' Protos ':' END
        !            63:        = {
        !            64:                do_entry($1, $3, $5, $7, $9, $11);
        !            65:        }
        !            66:        |       error END
        !            67:        |       END             /* blank line */
        !            68:        ;
        !            69: 
        !            70: Addresses:     Address
        !            71:        = {
        !            72:                $$ = $1;
        !            73:        }
        !            74:        |       Address ',' Addresses
        !            75:        = {
        !            76:                $1->addr_link = $3;
        !            77:                $$ = $1;
        !            78:        }
        !            79:        ;
        !            80: 
        !            81: Address        :       NUMBER '.' NUMBER '.' NUMBER '.' NUMBER
        !            82:        = {
        !            83:                char *a;
        !            84: 
        !            85:                $$ = (struct addr *)malloc(sizeof (struct addr));
        !            86:                a = (char *)&($$->addr_val);
        !            87:                a[0] = $1; a[1] = $3; a[2] = $5; a[3] = $7;
        !            88:                $$->addr_link = NOADDR;
        !            89:        }
        !            90:        ;
        !            91: 
        !            92: Names  :       NAME
        !            93:        = {
        !            94:                $$ = $1;
        !            95:        }
        !            96:        |       NAME ',' Names
        !            97:        = {
        !            98:                $1->name_link = $3;
        !            99:                $$ = $1;
        !           100:        }
        !           101:        ;
        !           102: 
        !           103: Cputype :      /* empty */
        !           104:        = {
        !           105:                $$ = NONAME;
        !           106:        }
        !           107:        |       NAME
        !           108:        = {
        !           109:                $$ = $1;
        !           110:        }
        !           111:        ;
        !           112: 
        !           113: Opsys  :       /* empty */
        !           114:        = {
        !           115:                $$ = NONAME;
        !           116:        }
        !           117:        |       NAME
        !           118:        = {
        !           119:                $$ = $1;
        !           120:        }
        !           121:        ;
        !           122: 
        !           123: Protos :       Proto
        !           124:        = {
        !           125:                $$ = $1;
        !           126:        }
        !           127:        |       Proto ',' Protos
        !           128:        = {
        !           129:                $1->name_link = $3;
        !           130:                $$ = $1;
        !           131:        }
        !           132:        ;
        !           133: 
        !           134: Proto  :       NAME
        !           135:        = {
        !           136:                $$ = $1;
        !           137:        }
        !           138:        ;
        !           139: %%
        !           140: 
        !           141: #include <stdio.h>
        !           142: 
        !           143: extern int yylineno;
        !           144: 
        !           145: yyerror(msg)
        !           146:        char *msg;
        !           147: {
        !           148:        fprintf(stderr, "\"%s\", line %d: %s\n", infile, yylineno, msg);
        !           149: }

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