+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ExpressionLanguage;
+
+/**
+ * Represents an expression.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class Expression
+{
+ protected $expression;
+
+ /**
+ * Constructor.
+ *
+ * @param string $expression An expression
+ */
+ public function __construct($expression)
+ {
+ $this->expression = (string) $expression;
+ }
+
+ /**
+ * Gets the expression.
+ *
+ * @return string The expression
+ */
+ public function __toString()
+ {
+ return $this->expression;
+ }
+}