code&nbsp;:&nbsp;string;<br>
&nbsp;&nbsp;}<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;engine&nbsp;:&nbsp;<span class="constructor">Lexing</span>.lex_tables&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Lexing</span>.lexbuf&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;new_engine&nbsp;:&nbsp;<span class="constructor">Lexing</span>.lex_tables&nbsp;<span clas