</tr>
<tr>
<td>setVM</td>
<td>X</td>
<td>.</td>
<td>.</td>
<td>.</td>
</tr>
<tr>
<td>stop</td>
<td>.</td>
<td>X</td>
<td>.</td>
<td>.</td>
</tr>
<tr>
<td>variables</td>
<td>.</td>
<td>X</td>
<td>.</td>
<td>.</td>
</tr>
</tbody>
</table>
<h2 id="style-checker-exercises">Section 14.8: Exercises</h2>
<h3 class="exercise">Function length</h3>
<p>Derive a class from <code>Walker</code> that reports the length in lines of each function defined in the code being checked.</p>
<h3 class="exercise">Expression depth</