lass="special">,</span> <span class="identifier">space</span><span class="special">,</span> <span class="identifier">ast</span><span class="special">);</span>

    <span class="comment">// ... Some final reports here</span>
<span class="special">}</span>
</pre>
<p>
        Prior to calling <code class="computeroutput"><span class="identifier">phrase_parse</span></code>,
        we first create an AST where parsed data will be stored:
      </p>
<pre class="programlisting"><span class="identifier">std</span>