Update

trunk/_vendor/symfony/assetic-bundle/DependencyInjection/Compiler/AssetManagerPass.php

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+<?php
+
+/*
+ * This file is part of the Symfony framework.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace Symfony\Bundle\AsseticBundle\DependencyInjection\Compiler;
+
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Reference;
+
+/**
+ * Adds services tagged as assets to the asset manager.
+ *
+ * @author Kris Wallsmith <kris@symfony.com>
+ */
+class AssetManagerPass implements CompilerPassInterface
+{
+    public function process(ContainerBuilder $container)
+    {
+        if (!$container->hasDefinition('assetic.asset_manager')) {
+            return;
+        }
+
+        $am = $container->getDefinition('assetic.asset_manager');
+
+        // add assets
+        foreach ($container->findTaggedServiceIds('assetic.asset') as $id => $attributes) {
+            foreach ($attributes as $attr) {
+                if (isset($attr['alias'])) {
+                    $am->addMethodCall('set', array($attr['alias'], new Reference($id)));
+                }
+            }
+        }
+
+        // add loaders
+        $loaders = array();
+        foreach ($container->findTaggedServiceIds('assetic.formula_loader') as $id => $attributes) {
+            foreach ($attributes as $attr) {
+                if (isset($attr['alias'])) {
+                    $loaders[$attr['alias']] = new Reference($id);
+                }
+            }
+        }
+        $am->replaceArgument(1, $loaders);
+
+        // add resources
+        foreach ($container->findTaggedServiceIds('assetic.formula_resource') as $id => $attributes) {
+            foreach ($attributes as $attr) {
+                if (isset($attr['loader'])) {
+                    $am->addMethodCall('addResource', array(new Reference($id), $attr['loader']));
+                }
+            }
+        }
+    }
+}