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/* Accepts html-like input.
How to compile:
bison --defines --output-file="parser.c" --name-prefix="test" parser.y
*/
%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#define YYERROR_VERBOSE 1
#define YYPARSE_PARAM scanner
#define YYLEX_PARAM scanner
int yyerror(char* msg);
/* A dummy function. A check against seg-faults in yylval->str. */
int process_text(char* s) {
int total =0;
while(*s) {
total += (int) *s;
++s;
}
return total;
}
%}
%pure_parser
%union {
long unused;
char * str;
}
%token <str> TAGNAME TEXT
%token LT
%token GT
%token LTSLASH "</"
%%
html:
TEXT { process_text($1); free($1);}
| starttag html endtag
| html TEXT { process_text($2); free($2);}
| html starttag html endtag
;
starttag: LT TAGNAME GT { process_text($2); free($2);} ;
endtag: LTSLASH TAGNAME GT { process_text($2);free($2);} ;
%%
int yyerror(char* msg) {
fprintf(stderr,"%s\n",msg);
return 0;
}
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