Chris@14: <?php
Chris@14: 
Chris@14: /*
Chris@14:  * This file is part of the Symfony package.
Chris@14:  *
Chris@14:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@14:  *
Chris@14:  * For the full copyright and license information, please view the LICENSE
Chris@14:  * file that was distributed with this source code.
Chris@14:  */
Chris@14: 
Chris@14: namespace Symfony\Component\DependencyInjection\Compiler;
Chris@14: 
Chris@14: use Psr\Container\ContainerInterface;
Chris@14: use Symfony\Component\DependencyInjection\Definition;
Chris@14: use Symfony\Component\DependencyInjection\Reference;
Chris@14: 
Chris@14: /**
Chris@14:  * Compiler pass to inject their service locator to service subscribers.
Chris@14:  *
Chris@14:  * @author Nicolas Grekas <p@tchwork.com>
Chris@14:  */
Chris@14: class ResolveServiceSubscribersPass extends AbstractRecursivePass
Chris@14: {
Chris@14:     private $serviceLocator;
Chris@14: 
Chris@14:     protected function processValue($value, $isRoot = false)
Chris@14:     {
Chris@14:         if ($value instanceof Reference && $this->serviceLocator && ContainerInterface::class === $this->container->normalizeId($value)) {
Chris@14:             return new Reference($this->serviceLocator);
Chris@14:         }
Chris@14: 
Chris@14:         if (!$value instanceof Definition) {
Chris@14:             return parent::processValue($value, $isRoot);
Chris@14:         }
Chris@14: 
Chris@14:         $serviceLocator = $this->serviceLocator;
Chris@16:         $this->serviceLocator = null;
Chris@16: 
Chris@16:         if ($value->hasTag('container.service_subscriber.locator')) {
Chris@16:             $this->serviceLocator = $value->getTag('container.service_subscriber.locator')[0]['id'];
Chris@16:             $value->clearTag('container.service_subscriber.locator');
Chris@16:         }
Chris@14: 
Chris@14:         try {
Chris@14:             return parent::processValue($value);
Chris@14:         } finally {
Chris@14:             $this->serviceLocator = $serviceLocator;
Chris@14:         }
Chris@14:     }
Chris@14: }