ic void unrecovered_syntax_error(Symbol cur_token)</tt>
</dt><dd>This method is called by the parser if it is unable to recover from a 
    syntax error.  In the default implementation it calls:
    <tt>report_fatal_error("Couldn't repair and continue parse", null);</tt>.
</dd><dt><tt> protected int error_sync_size()</tt>
</dt><dd>This method is called by the parser to determine how many tokens it must
    successfully parse in order to consider an error recovery successful.
    The default implementation r