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|
/* gramble - grammar ramble
*
* team teso
*
* grammar parser
*/
%{
#include <stdio.h>
#include <stdlib.h>
#include "input.h"
extern void * in_grammar;
%}
%union {
unsigned int uint; /* unsigned number (length) */
unsigned char * str; /* generic ASCIIZ string pointer */
void * ugly;
}
%token <str> STR NSSTR NTERM TERM FILTER NEGFILTER SIZE
%token <uint> NUM
/* use % type here */
%type <ugly> prod prodr prodrelem poptl popt
%start prodlist
%%
prodlist:
prodlist prod
{
in_grammar = NULL;
}
| prod
{
in_grammar = NULL;
}
;
prod: NTERM ':' prodr
{
$$ = NULL;
}
;
/* prodr, right side of a production */
prodr: prodr prodrelem
{
$$ = NULL;
}
| prodrelem
{
$$ = NULL;
}
;
/* prodr, right side of a production */
prodrelem: '[' prodr ']' poptl
{
$$ = NULL;
}
| NTERM
{
$$ = NULL;
}
| TERM
{
$$ = NULL;
}
;
/* production option list */
poptl: poptl '(' popt ')'
{
$$ = NULL;
}
|
{
$$ = NULL;
}
;
popt: FILTER ':' '/' NSSTR '/'
{
fprintf (stderr, "FILTER: %s with /%s/\n", $1, $4);
$$ = NULL;
}
| NEGFILTER ':' '/' NSSTR '/'
{
$$ = NULL;
}
| SIZE ':' NUM '-' NUM
{
$$ = NULL;
}
;
%%
/* TODO: includes in parser come here
*/
|
