public function RegisterListenersPass::process in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php \Symfony\Component\EventDispatcher\DependencyInjection\RegisterListenersPass::process()

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

Parameters

ContainerBuilder $container:

Overrides CompilerPassInterface::process

File

vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php, line 51

Class

RegisterListenersPass

Compiler pass to register tagged services for an event dispatcher.

Namespace

Symfony\Component\EventDispatcher\DependencyInjection

Code

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.', $id));
    }
    if ($def
      ->isAbstract()) {
      throw new \InvalidArgumentException(sprintf('The service "%s" must not be abstract 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 = $container
      ->getParameterBag()
      ->resolveValue($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,
    ));
  }
}