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3 liveuser 1 
<?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;
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/**
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 * A read-only proxy for an event dispatcher.
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 *
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 * @author Bernhard Schussek <bschussek@gmail.com>
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 */
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class ImmutableEventDispatcher implements EventDispatcherInterface
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{
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    /**
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     * The proxied dispatcher.
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     *
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     * @var EventDispatcherInterface
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     */
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    private $dispatcher;
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    /**
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     * Creates an unmodifiable proxy for an event dispatcher.
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     *
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     * @param EventDispatcherInterface $dispatcher The proxied event dispatcher
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     */
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    public function __construct(EventDispatcherInterface $dispatcher)
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    {
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        $this->dispatcher = $dispatcher;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function dispatch($eventName, Event $event = null)
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    {
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        return $this->dispatcher->dispatch($eventName, $event);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function addListener($eventName, $listener, $priority = 0)
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    {
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        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function addSubscriber(EventSubscriberInterface $subscriber)
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    {
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        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function removeListener($eventName, $listener)
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    {
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        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function removeSubscriber(EventSubscriberInterface $subscriber)
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    {
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        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function getListeners($eventName = null)
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    {
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        return $this->dispatcher->getListeners($eventName);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function getListenerPriority($eventName, $listener)
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    {
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        return $this->dispatcher->getListenerPriority($eventName, $listener);
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function hasListeners($eventName = null)
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    {
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        return $this->dispatcher->hasListeners($eventName);
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    }
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}