public function RegisterListenersPass::process

You can modify the container here before it is dumped to PHP code.

@api

Parameters

ContainerBuilder $container:

Overrides CompilerPassInterface::process

File

drupal/core/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/DependencyInjection/RegisterListenersPass.php, line 51

Class

RegisterListenersPass

Compiler pass to register tagged services for an event dispatcher.

Namespace

Code

public function process(ContainerBuilder $container) {
  if (!$container
    ->hasDefinition($this->dispatcherService)) {
    return;
  }
  $definition = $container
    ->getDefinition($this->dispatcherService);
  foreach ($container
    ->findTaggedServiceIds($this->listenerTag) as $id => $events) {
    foreach ($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 "kernel.event_listener" tags.', $id));
      }
      if (!isset($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) {

    // 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));
    }
    $definition
      ->addMethodCall('addSubscriberService', array(
      $id,
      $class,
    ));
  }
}