Actualización

vendor/symfony/twig-bundle/ContainerAwareRuntimeLoader.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\Bundle\TwigBundle;
+
+use Psr\Log\LoggerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Twig\RuntimeLoader\RuntimeLoaderInterface;
+
+/**
+ * Loads Twig extension runtimes via the service container.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ContainerAwareRuntimeLoader implements RuntimeLoaderInterface
+{
+    private $container;
+    private $mapping;
+    private $logger;
+
+    public function __construct(ContainerInterface $container, array $mapping, LoggerInterface $logger = null)
+    {
+        $this->container = $container;
+        $this->mapping = $mapping;
+        $this->logger = $logger;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function load($class)
+    {
+        if (isset($this->mapping[$class])) {
+            return $this->container->get($this->mapping[$class]);
+        }
+
+        if (null !== $this->logger) {
+            $this->logger->warning(sprintf('Class "%s" is not configured as a Twig runtime. Add the "twig.runtime" tag to the related service in the container.', $class));
+        }
+    }
+}