Upgrading to 1.0.0-beta1 version of the API PHP implementation.

vendor/symfony/event-dispatcher/DependencyInjection/RegisterListenersPass.php

@@ -0,0 +1,135 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\EventDispatcher\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Compiler pass to register tagged services for an event dispatcher.
+ */
+class RegisterListenersPass implements CompilerPassInterface
+{
+    /**
+     * @var string
+     */
+    protected $dispatcherService;
+
+    /**
+     * @var string
+     */
+    protected $listenerTag;
+
+    /**
+     * @var string
+     */
+    protected $subscriberTag;
+
+    /**
+     * Constructor.
+     *
+     * @param string $dispatcherService Service name of the event dispatcher in processed container
+     * @param string $listenerTag       Tag name used for listener
+     * @param string $subscriberTag     Tag name used for subscribers
+     */
+    public function __construct($dispatcherService = 'event_dispatcher', $listenerTag = 'kernel.event_listener', $subscriberTag = 'kernel.event_subscriber')
+    {
+        $this->dispatcherService = $dispatcherService;
+        $this->listenerTag = $listenerTag;
+        $this->subscriberTag = $subscriberTag;
+    }
+
+    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, true) as $id => $events) {
+            $def = $container->getDefinition($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']);
+                }
+
+                $definition->addMethodCall('addListener', array($event['event'], array(new ServiceClosureArgument(new Reference($id)), $event['method']), $priority));
+            }
+        }
+
+        $extractingDispatcher = new ExtractingEventDispatcher();
+
+        foreach ($container->findTaggedServiceIds($this->subscriberTag, true) as $id => $attributes) {
+            $def = $container->getDefinition($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());
+            $interface = 'Symfony\Component\EventDispatcher\EventSubscriberInterface';
+
+            if (!is_subclass_of($class, $interface)) {
+                if (!class_exists($class, false)) {
+                    throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
+                }
+
+                throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, $interface));
+            }
+            $container->addObjectResource($class);
+
+            ExtractingEventDispatcher::$subscriber = $class;
+            $extractingDispatcher->addSubscriber($extractingDispatcher);
+            foreach ($extractingDispatcher->listeners as $args) {
+                $args[1] = array(new ServiceClosureArgument(new Reference($id)), $args[1]);
+                $definition->addMethodCall('addListener', $args);
+            }
+            $extractingDispatcher->listeners = array();
+        }
+    }
+}
+
+/**
+ * @internal
+ */
+class ExtractingEventDispatcher extends EventDispatcher implements EventSubscriberInterface
+{
+    public $listeners = array();
+
+    public static $subscriber;
+
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        $this->listeners[] = array($eventName, $listener[1], $priority);
+    }
+
+    public static function getSubscribedEvents()
+    {
+        $callback = array(self::$subscriber, 'getSubscribedEvents');
+
+        return $callback();
+    }
+}