freebsd-dev/crypto/heimdal/lib/sl/parse.y
2001-02-13 16:46:19 +00:00

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%{
/*
* Copyright (c) 1998 - 2000 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "make_cmds.h"
RCSID("$Id: parse.y,v 1.7 2000/06/27 02:37:18 assar Exp $");
static void yyerror (char *s);
struct string_list* append_string(struct string_list*, char*);
void free_string_list(struct string_list *list);
unsigned string_to_flag(const char *);
/* This is for bison */
#if !defined(alloca) && !defined(HAVE_ALLOCA)
#define alloca(x) malloc(x)
#endif
%}
%union {
char *string;
unsigned number;
struct string_list *list;
}
%token TABLE REQUEST UNKNOWN UNIMPLEMENTED END
%token <string> STRING
%type <number> flag flags
%type <list> aliases
%%
file : /* */
| statements
;
statements : statement
| statements statement
;
statement : TABLE STRING ';'
{
table_name = $2;
}
| REQUEST STRING ',' STRING ',' aliases ',' '(' flags ')' ';'
{
add_command($2, $4, $6, $9);
}
| REQUEST STRING ',' STRING ',' aliases ';'
{
add_command($2, $4, $6, 0);
}
| UNIMPLEMENTED STRING ',' STRING ',' aliases ';'
{
free($2);
free($4);
free_string_list($6);
}
| UNKNOWN aliases ';'
{
free_string_list($2);
}
| END ';'
{
YYACCEPT;
}
;
aliases : STRING
{
$$ = append_string(NULL, $1);
}
| aliases ',' STRING
{
$$ = append_string($1, $3);
}
;
flags : flag
{
$$ = $1;
}
| flags ',' flag
{
$$ = $1 | $3;
}
;
flag : STRING
{
$$ = string_to_flag($1);
free($1);
}
;
%%
static void
yyerror (char *s)
{
error_message ("%s\n", s);
}
struct string_list*
append_string(struct string_list *list, char *str)
{
struct string_list *sl = malloc(sizeof(*sl));
sl->string = str;
sl->next = NULL;
if(list) {
*list->tail = sl;
list->tail = &sl->next;
return list;
}
sl->tail = &sl->next;
return sl;
}
void
free_string_list(struct string_list *list)
{
while(list) {
struct string_list *sl = list->next;
free(list->string);
free(list);
list = sl;
}
}
unsigned
string_to_flag(const char *string)
{
return 0;
}