From 2be8b6e2eac24f9f576c5591cc9e7bf49244a19f Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien.potencier@gmail.com>
Date: Mon, 12 Jan 2015 14:42:13 +0100
Subject: [PATCH] [TwigBundle] optimized the hinclude fragement renderer when
 only Twig is used

---
 .../DependencyInjection/Compiler/ExtensionPass.php   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
index 953a9dd9dd..b325836281 100644
--- a/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
+++ b/src/Symfony/Bundle/TwigBundle/DependencyInjection/Compiler/ExtensionPass.php
@@ -13,6 +13,7 @@ namespace Symfony\Bundle\TwigBundle\DependencyInjection\Compiler;
 
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
 
 /**
  * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
@@ -41,6 +42,17 @@ class ExtensionPass implements CompilerPassInterface
 
         if ($container->has('fragment.handler')) {
             $container->getDefinition('twig.extension.httpkernel')->addTag('twig.extension');
+
+            // inject Twig in the hinclude service if Twig is the only registered templating engine
+            if (
+                !$container->hasParameter('templating.engines')
+                || array('twig') == $container->getParameter('templating.engines')
+            ) {
+                $container->getDefinition('fragment.renderer.hinclude')
+                    ->addTag('kernel.fragment_renderer', array('alias' => 'hinclude'))
+                    ->replaceArgument(0, new Reference('twig'))
+                ;
+            }
         }
 
         if ($container->has('request_stack')) {