first commit

vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php

@@ -0,0 +1,67 @@
+<?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;
+
+/**
+ * A read-only proxy for an event dispatcher.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class ImmutableEventDispatcher implements EventDispatcherInterface
+{
+    private EventDispatcherInterface $dispatcher;
+
+    public function __construct(EventDispatcherInterface $dispatcher)
+    {
+        $this->dispatcher = $dispatcher;
+    }
+
+    public function dispatch(object $event, ?string $eventName = null): object
+    {
+        return $this->dispatcher->dispatch($event, $eventName);
+    }
+
+    public function addListener(string $eventName, callable|array $listener, int $priority = 0): never
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    public function addSubscriber(EventSubscriberInterface $subscriber): never
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    public function removeListener(string $eventName, callable|array $listener): never
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    public function removeSubscriber(EventSubscriberInterface $subscriber): never
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    public function getListeners(?string $eventName = null): array
+    {
+        return $this->dispatcher->getListeners($eventName);
+    }
+
+    public function getListenerPriority(string $eventName, callable|array $listener): ?int
+    {
+        return $this->dispatcher->getListenerPriority($eventName, $listener);
+    }
+
+    public function hasListeners(?string $eventName = null): bool
+    {
+        return $this->dispatcher->hasListeners($eventName);
+    }
+}