t><span class="term">HasState</span></dt>
<dd><p>
                  This is either <code class="computeroutput"><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">true_</span></code>
                  or <code class="computeroutput"><span class="identifier">mpl</span><span class="special">::</span><span class="identifier">false_</span></code>, allowing control as to
                  whether the generated token instances will contain the lexer state
                  