Actualización

vendor/symfony/twig-bridge/Extension/ExpressionExtension.php

@@ -0,0 +1,49 @@
+<?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\Bridge\Twig\Extension;
+
+use Symfony\Component\ExpressionLanguage\Expression;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+/**
+ * ExpressionExtension gives a way to create Expressions from a template.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ExpressionExtension extends AbstractExtension
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getFunctions()
+    {
+        return array(
+            new TwigFunction('expression', array($this, 'createExpression')),
+        );
+    }
+
+    public function createExpression($expression)
+    {
+        return new Expression($expression);
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'expression';
+    }
+}