function yy_parse_failed()
{
if (self::$yyTraceFILE) {
fprintf(self::$yyTraceFILE, "%sFail!\n", self::$yyTracePrompt);
}
while ($this->yyidx >= 0) {
$this->yy_pop_parser_stack();
}
/* Here code is inserted which will be executed whenever the
** parser fails */
}