Example #1
0
 public function process(ContainerBuilder $container)
 {
     if (!$container->hasDefinition($this->dispatcherService) && !$container->hasAlias($this->dispatcherService)) {
         return;
     }
     $definition = $container->findDefinition($this->dispatcherService);
     foreach ($container->findTaggedServiceIds($this->listenerTag) as $id => $events) {
         $def = $container->getDefinition($id);
         if (!$def->isPublic()) {
             throw new \InvalidArgumentException(sprintf('The service "%s" must be public as event listeners are lazy-loaded.', $id));
         }
         if ($def->isAbstract()) {
             throw new \InvalidArgumentException(sprintf('The service "%s" must not be abstract as event listeners are lazy-loaded.', $id));
         }
         foreach ($events as $event) {
             $priority = isset($event['priority']) ? $event['priority'] : 0;
             if (!isset($event['event'])) {
                 throw new \InvalidArgumentException(sprintf('Service "%s" must define the "event" attribute on "%s" tags.', $id, $this->listenerTag));
             }
             if (!isset($event['method'])) {
                 $event['method'] = 'on' . preg_replace_callback(array('/(?<=\\b)[a-z]/i', '/[^a-z0-9]/i'), function ($matches) {
                     return strtoupper($matches[0]);
                 }, $event['event']);
                 $event['method'] = preg_replace('/[^a-z0-9]/i', '', $event['method']);
             }
             $definition->addMethodCall('addListenerService', array($event['event'], array($id, $event['method']), $priority));
         }
     }
     foreach ($container->findTaggedServiceIds($this->subscriberTag) as $id => $attributes) {
         $def = $container->getDefinition($id);
         if (!$def->isPublic()) {
             throw new \InvalidArgumentException(sprintf('The service "%s" must be public as event subscribers are lazy-loaded.', $id));
         }
         // We must assume that the class value has been correctly filled, even if the service is created by a factory
         $class = $def->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));
         }
         $definition->addMethodCall('addSubscriberService', array($id, $class));
     }
 }