--- /dev/null
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Psr\Container\ContainerInterface;
+
+/**
+ * Lazily loads Twig runtime implementations from a PSR-11 container.
+ *
+ * Note that the runtime services MUST use their class names as identifiers.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Robin Chalas <robin.chalas@gmail.com>
+ */
+class Twig_ContainerRuntimeLoader implements Twig_RuntimeLoaderInterface
+{
+ private $container;
+
+ public function __construct(ContainerInterface $container)
+ {
+ $this->container = $container;
+ }
+
+ public function load($class)
+ {
+ if ($this->container->has($class)) {
+ return $this->container->get($class);
+ }
+ }
+}