/**
* @return array|SubscribesToEvents[]
*/
public function getEventSubscribers() : array
{
if ($this->eventSubscribers === null) {
$this->eventSubscribers = $this->config->getEventSubscribers();
}
return $this->eventSubscribers;
}
/**
* @throws InvalidEventSubscriberCollection
*/
private function guardEventSubscribersAreValid()
{
$eventSubscribers = $this->config->getEventSubscribers();
$invalidSubscribers = array_filter($eventSubscribers, function ($subscriber) {
return !is_object($subscriber) || !$subscriber instanceof SubscribesToEvents;
});
if (!empty($invalidSubscribers)) {
throw (new InvalidEventSubscriberCollection())->withInvalidKeys(array_keys($invalidSubscribers));
}
}
private function registerEventSubscribers()
{
foreach ($this->config->getEventSubscribers() as $subscriber) {
$this->eventPublisher->register($subscriber);
}
}
