forked from GNUsocial/gnu-social
101 lines
4.2 KiB
PHP
101 lines
4.2 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\EventDispatcher\DependencyInjection;
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use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
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use Symfony\Component\DependencyInjection\ContainerBuilder;
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/**
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* Compiler pass to register tagged services for an event dispatcher.
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*/
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class RegisterListenersPass implements CompilerPassInterface
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{
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protected $dispatcherService;
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protected $listenerTag;
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protected $subscriberTag;
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/**
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* @param string $dispatcherService Service name of the event dispatcher in processed container
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* @param string $listenerTag Tag name used for listener
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* @param string $subscriberTag Tag name used for subscribers
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*/
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public function __construct($dispatcherService = 'event_dispatcher', $listenerTag = 'kernel.event_listener', $subscriberTag = 'kernel.event_subscriber')
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{
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$this->dispatcherService = $dispatcherService;
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$this->listenerTag = $listenerTag;
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$this->subscriberTag = $subscriberTag;
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}
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public function process(ContainerBuilder $container)
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{
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if (!$container->hasDefinition($this->dispatcherService) && !$container->hasAlias($this->dispatcherService)) {
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return;
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}
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$definition = $container->findDefinition($this->dispatcherService);
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foreach ($container->findTaggedServiceIds($this->listenerTag) as $id => $events) {
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$def = $container->getDefinition($id);
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if (!$def->isPublic()) {
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throw new \InvalidArgumentException(sprintf('The service "%s" must be public as event listeners are lazy-loaded.', $id));
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}
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if ($def->isAbstract()) {
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throw new \InvalidArgumentException(sprintf('The service "%s" must not be abstract as event listeners are lazy-loaded.', $id));
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}
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foreach ($events as $event) {
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$priority = isset($event['priority']) ? $event['priority'] : 0;
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if (!isset($event['event'])) {
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throw new \InvalidArgumentException(sprintf('Service "%s" must define the "event" attribute on "%s" tags.', $id, $this->listenerTag));
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}
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if (!isset($event['method'])) {
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$event['method'] = 'on'.preg_replace_callback(array(
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'/(?<=\b)[a-z]/i',
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'/[^a-z0-9]/i',
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), function ($matches) { return strtoupper($matches[0]); }, $event['event']);
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$event['method'] = preg_replace('/[^a-z0-9]/i', '', $event['method']);
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}
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$definition->addMethodCall('addListenerService', array($event['event'], array($id, $event['method']), $priority));
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}
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}
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foreach ($container->findTaggedServiceIds($this->subscriberTag) as $id => $attributes) {
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$def = $container->getDefinition($id);
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if (!$def->isPublic()) {
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throw new \InvalidArgumentException(sprintf('The service "%s" must be public as event subscribers are lazy-loaded.', $id));
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}
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if ($def->isAbstract()) {
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throw new \InvalidArgumentException(sprintf('The service "%s" must not be abstract as event subscribers are lazy-loaded.', $id));
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}
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// We must assume that the class value has been correctly filled, even if the service is created by a factory
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$class = $container->getParameterBag()->resolveValue($def->getClass());
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$interface = 'Symfony\Component\EventDispatcher\EventSubscriberInterface';
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if (!is_subclass_of($class, $interface)) {
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if (!class_exists($class, false)) {
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throw new \InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
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}
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throw new \InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, $interface));
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}
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$definition->addMethodCall('addSubscriberService', array($id, $class));
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}
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}
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}
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