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    <h3>Editing: ExpressionRequestMatcher.php</h3>
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/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

use Symfony\Component\ExpressionLanguage\ExpressionLanguage;

/**
 * ExpressionRequestMatcher uses an expression to match a Request.
 *
 * @author Fabien Potencier &lt;fabien@symfony.com&gt;
 */
class ExpressionRequestMatcher extends RequestMatcher
{
    private $language;
    private $expression;

    public function setExpression(ExpressionLanguage $language, $expression)
    {
        $this-&gt;language = $language;
        $this-&gt;expression = $expression;
    }

    public function matches(Request $request)
    {
        if (!$this-&gt;language) {
            throw new \LogicException('Unable to match the request as the expression language is not available.');
        }

        return $this-&gt;language-&gt;evaluate($this-&gt;expression, [
            'request' =&gt; $request,
            'method' =&gt; $request-&gt;getMethod(),
            'path' =&gt; rawurldecode($request-&gt;getPathInfo()),
            'host' =&gt; $request-&gt;getHost(),
            'ip' =&gt; $request-&gt;getClientIp(),
            'attributes' =&gt; $request-&gt;attributes-&gt;all(),
        ]) &amp;&amp; parent::matches($request);
    }
}
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