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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\DependencyInjection\Compiler\RegisterEventSubscribersPass. | |
| */ | |
| namespace Drupal\Core\DependencyInjection\Compiler; | |
| use Symfony\Component\DependencyInjection\ContainerBuilder; | |
| use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface; | |
| /** | |
| * Registers all event subscribers to the event dispatcher. | |
| */ | |
| class RegisterEventSubscribersPass implements CompilerPassInterface { | |
| public function process(ContainerBuilder $container) { | |
| if (!$container->hasDefinition('event_dispatcher')) { | |
| return; | |
| } | |
| $definition = $container->getDefinition('event_dispatcher'); | |
| $event_subscriber_info = []; | |
| foreach ($container->findTaggedServiceIds('event_subscriber') as $id => $attributes) { | |
| // We must assume that the class value has been correctly filled, even if the service is created by a factory | |
| $class = $container->getDefinition($id)->getClass(); | |
| $refClass = new \ReflectionClass($class); | |
| $interface = 'Symfony\Component\EventDispatcher\EventSubscriberInterface'; | |
| if (!$refClass->implementsInterface($interface)) { | |
| throw new \InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, $interface)); | |
| } | |
| // Get all subscribed events. | |
| foreach ($class::getSubscribedEvents() as $event_name => $params) { | |
| if (is_string($params)) { | |
| $priority = 0; | |
| $event_subscriber_info[$event_name][$priority][] = ['service' => [$id, $params]]; | |
| } | |
| elseif (is_string($params[0])) { | |
| $priority = isset($params[1]) ? $params[1] : 0; | |
| $event_subscriber_info[$event_name][$priority][] = ['service' => [$id, $params[0]]]; | |
| } | |
| else { | |
| foreach ($params as $listener) { | |
| $priority = isset($listener[1]) ? $listener[1] : 0; | |
| $event_subscriber_info[$event_name][$priority][] = ['service' => [$id, $listener[0]]]; | |
| } | |
| } | |
| } | |
| } | |
| foreach (array_keys($event_subscriber_info) as $event_name) { | |
| krsort($event_subscriber_info[$event_name]); | |
| } | |
| $definition->addArgument($event_subscriber_info); | |
| } | |
| } |