update

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

@@ -0,0 +1,42 @@
+<?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\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+/**
+ * This pass allows bundles to extend the list of event aliases.
+ *
+ * @author Alexander M. Turek <me@derrabus.de>
+ */
+class AddEventAliasesPass implements CompilerPassInterface
+{
+    private $eventAliases;
+    private $eventAliasesParameter;
+
+    public function __construct(array $eventAliases, string $eventAliasesParameter = 'event_dispatcher.event_aliases')
+    {
+        $this->eventAliases = $eventAliases;
+        $this->eventAliasesParameter = $eventAliasesParameter;
+    }
+
+    public function process(ContainerBuilder $container): void
+    {
+        $eventAliases = $container->hasParameter($this->eventAliasesParameter) ? $container->getParameter($this->eventAliasesParameter) : [];
+
+        $container->setParameter(
+            $this->eventAliasesParameter,
+            array_merge($eventAliases, $this->eventAliases)
+        );
+    }
+}

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

@@ -0,0 +1,178 @@
+<?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\Compiler\CompilerPassInterface;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\EventDispatcher\Event as LegacyEvent;
+use Symfony\Component\EventDispatcher\EventDispatcher;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Contracts\EventDispatcher\Event;
+
+/**
+ * Compiler pass to register tagged services for an event dispatcher.
+ */
+class RegisterListenersPass implements CompilerPassInterface
+{
+    protected $dispatcherService;
+    protected $listenerTag;
+    protected $subscriberTag;
+    protected $eventAliasesParameter;
+
+    private $hotPathEvents = [];
+    private $hotPathTagName;
+
+    public function __construct(string $dispatcherService = 'event_dispatcher', string $listenerTag = 'kernel.event_listener', string $subscriberTag = 'kernel.event_subscriber', string $eventAliasesParameter = 'event_dispatcher.event_aliases')
+    {
+        $this->dispatcherService = $dispatcherService;
+        $this->listenerTag = $listenerTag;
+        $this->subscriberTag = $subscriberTag;
+        $this->eventAliasesParameter = $eventAliasesParameter;
+    }
+
+    public function setHotPathEvents(array $hotPathEvents, $tagName = 'container.hot_path')
+    {
+        $this->hotPathEvents = array_flip($hotPathEvents);
+        $this->hotPathTagName = $tagName;
+
+        return $this;
+    }
+
+    public function process(ContainerBuilder $container)
+    {
+        if (!$container->hasDefinition($this->dispatcherService) && !$container->hasAlias($this->dispatcherService)) {
+            return;
+        }
+
+        $aliases = [];
+
+        if ($container->hasParameter($this->eventAliasesParameter)) {
+            $aliases = $container->getParameter($this->eventAliasesParameter);
+        }
+
+        $definition = $container->findDefinition($this->dispatcherService);
+
+        foreach ($container->findTaggedServiceIds($this->listenerTag, true) as $id => $events) {
+            foreach ($events as $event) {
+                $priority = $event['priority'] ?? 0;
+
+                if (!isset($event['event'])) {
+                    if ($container->getDefinition($id)->hasTag($this->subscriberTag)) {
+                        continue;
+                    }
+
+                    $event['method'] = $event['method'] ?? '__invoke';
+                    $event['event'] = $this->getEventFromTypeDeclaration($container, $id, $event['method']);
+                }
+
+                $event['event'] = $aliases[$event['event']] ?? $event['event'];
+
+                if (!isset($event['method'])) {
+                    $event['method'] = 'on'.preg_replace_callback([
+                        '/(?<=\b|_)[a-z]/i',
+                        '/[^a-z0-9]/i',
+                    ], function ($matches) { return strtoupper($matches[0]); }, $event['event']);
+                    $event['method'] = preg_replace('/[^a-z0-9]/i', '', $event['method']);
+
+                    if (null !== ($class = $container->getDefinition($id)->getClass()) && ($r = $container->getReflectionClass($class, false)) && !$r->hasMethod($event['method']) && $r->hasMethod('__invoke')) {
+                        $event['method'] = '__invoke';
+                    }
+                }
+
+                $definition->addMethodCall('addListener', [$event['event'], [new ServiceClosureArgument(new Reference($id)), $event['method']], $priority]);
+
+                if (isset($this->hotPathEvents[$event['event']])) {
+                    $container->getDefinition($id)->addTag($this->hotPathTagName);
+                }
+            }
+        }
+
+        $extractingDispatcher = new ExtractingEventDispatcher();
+
+        foreach ($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 = $def->getClass();
+
+            if (!$r = $container->getReflectionClass($class)) {
+                throw new InvalidArgumentException(sprintf('Class "%s" used for service "%s" cannot be found.', $class, $id));
+            }
+            if (!$r->isSubclassOf(EventSubscriberInterface::class)) {
+                throw new InvalidArgumentException(sprintf('Service "%s" must implement interface "%s".', $id, EventSubscriberInterface::class));
+            }
+            $class = $r->name;
+
+            ExtractingEventDispatcher::$aliases = $aliases;
+            ExtractingEventDispatcher::$subscriber = $class;
+            $extractingDispatcher->addSubscriber($extractingDispatcher);
+            foreach ($extractingDispatcher->listeners as $args) {
+                $args[1] = [new ServiceClosureArgument(new Reference($id)), $args[1]];
+                $definition->addMethodCall('addListener', $args);
+
+                if (isset($this->hotPathEvents[$args[0]])) {
+                    $container->getDefinition($id)->addTag($this->hotPathTagName);
+                }
+            }
+            $extractingDispatcher->listeners = [];
+            ExtractingEventDispatcher::$aliases = [];
+        }
+    }
+
+    private function getEventFromTypeDeclaration(ContainerBuilder $container, string $id, string $method): string
+    {
+        if (
+            null === ($class = $container->getDefinition($id)->getClass())
+            || !($r = $container->getReflectionClass($class, false))
+            || !$r->hasMethod($method)
+            || 1 > ($m = $r->getMethod($method))->getNumberOfParameters()
+            || !($type = $m->getParameters()[0]->getType()) instanceof \ReflectionNamedType
+            || $type->isBuiltin()
+            || Event::class === ($name = $type->getName())
+            || LegacyEvent::class === $name
+        ) {
+            throw new InvalidArgumentException(sprintf('Service "%s" must define the "event" attribute on "%s" tags.', $id, $this->listenerTag));
+        }
+
+        return $name;
+    }
+}
+
+/**
+ * @internal
+ */
+class ExtractingEventDispatcher extends EventDispatcher implements EventSubscriberInterface
+{
+    public $listeners = [];
+
+    public static $aliases = [];
+    public static $subscriber;
+
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        $this->listeners[] = [$eventName, $listener[1], $priority];
+    }
+
+    public static function getSubscribedEvents(): array
+    {
+        $events = [];
+
+        foreach ([self::$subscriber, 'getSubscribedEvents']() as $eventName => $params) {
+            $events[self::$aliases[$eventName] ?? $eventName] = $params;
+        }
+
+        return $events;
+    }
+}