lter_parser.hpp</a></code><span class="special">&gt;</span>
</pre>
<p>
          You can extend filter parser in the similar way you can extend the formatter
          parser - by registering filter factories for your attribute values into
          the library. However, since it takes a considerably more complex syntax
          to describe filters, a filter factory typically implements several generator
          functions.
        </p>
<p>
          Like with formatter parser extension, you can avoid spe