Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\HttpKernel\DependencyInjection;
Chris@0: 
Chris@0: use Symfony\Component\DependencyInjection\ContainerBuilder;
Chris@0: use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
Chris@0: use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
Chris@0: 
Chris@0: /**
Chris@0:  * Adds services tagged kernel.fragment_renderer as HTTP content rendering strategies.
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  */
Chris@0: class FragmentRendererPass implements CompilerPassInterface
Chris@0: {
Chris@0:     private $handlerService;
Chris@0:     private $rendererTag;
Chris@0: 
Chris@0:     /**
Chris@0:      * @param string $handlerService Service name of the fragment handler in the container
Chris@0:      * @param string $rendererTag    Tag name used for fragments
Chris@0:      */
Chris@0:     public function __construct($handlerService = 'fragment.handler', $rendererTag = 'kernel.fragment_renderer')
Chris@0:     {
Chris@0:         $this->handlerService = $handlerService;
Chris@0:         $this->rendererTag = $rendererTag;
Chris@0:     }
Chris@0: 
Chris@0:     public function process(ContainerBuilder $container)
Chris@0:     {
Chris@0:         if (!$container->hasDefinition($this->handlerService)) {
Chris@0:             return;
Chris@0:         }
Chris@0: 
Chris@0:         $definition = $container->getDefinition($this->handlerService);
Chris@0:         foreach ($container->findTaggedServiceIds($this->rendererTag) as $id => $tags) {
Chris@0:             $def = $container->getDefinition($id);
Chris@0:             if (!$def->isPublic()) {
Chris@0:                 throw new InvalidArgumentException(sprintf('The service "%s" must be public as fragment renderer are lazy-loaded.', $id));
Chris@0:             }
Chris@0: 
Chris@0:             if ($def->isAbstract()) {
Chris@0:                 throw new InvalidArgumentException(sprintf('The service "%s" must not be abstract as fragment renderer are lazy-loaded.', $id));
Chris@0:             }
Chris@0: 
Chris@0:             $class = $container->getParameterBag()->resolveValue($def->getClass());
Chris@0:             $interface = 'Symfony\Component\HttpKernel\Fragment\FragmentRendererInterface';
Chris@0: 
Chris@0:             if (!is_subclass_of($class, $interface)) {
Chris@0:                 if (!class_exists($class, false)) {
Chris@0:                     throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
Chris@0:                 }
Chris@0: 
Chris@0:                 throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, $interface));
Chris@0:             }
Chris@0: 
Chris@0:             foreach ($tags as $tag) {
Chris@0:                 $definition->addMethodCall('addRendererService', array($tag['alias'], $id));
Chris@0:             }
Chris@0:         }
Chris@0:     }
Chris@0: }