first commit

vendor/symfony/event-dispatcher/.gitattributes

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+/Tests export-ignore
+/phpunit.xml.dist export-ignore
+/.gitignore export-ignore

vendor/symfony/event-dispatcher/CHANGELOG.md

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+CHANGELOG
+=========
+
+4.4.0
+-----
+
+ * `AddEventAliasesPass` has been added, allowing applications and bundles to extend the event alias mapping used by `RegisterListenersPass`.
+ * Made the `event` attribute of the `kernel.event_listener` tag optional for FQCN events.
+
+4.3.0
+-----
+
+ * The signature of the `EventDispatcherInterface::dispatch()` method should be updated to `dispatch($event, string $eventName = null)`, not doing so is deprecated
+ * deprecated the `Event` class, use `Symfony\Contracts\EventDispatcher\Event` instead
+
+4.1.0
+-----
+
+ * added support for invokable event listeners tagged with `kernel.event_listener` by default
+ * The `TraceableEventDispatcher::getOrphanedEvents()` method has been added.
+ * The `TraceableEventDispatcherInterface` has been deprecated.
+
+4.0.0
+-----
+
+ * removed the `ContainerAwareEventDispatcher` class
+ * added the `reset()` method to the `TraceableEventDispatcherInterface`
+
+3.4.0
+-----
+
+  * Implementing `TraceableEventDispatcherInterface` without the `reset()` method has been deprecated.
+
+3.3.0
+-----
+
+  * The ContainerAwareEventDispatcher class has been deprecated. Use EventDispatcher with closure factories instead.
+
+3.0.0
+-----
+
+  * The method `getListenerPriority($eventName, $listener)` has been added to the
+    `EventDispatcherInterface`.
+  * The methods `Event::setDispatcher()`, `Event::getDispatcher()`, `Event::setName()`
+    and `Event::getName()` have been removed.
+    The event dispatcher and the event name are passed to the listener call.
+
+2.5.0
+-----
+
+ * added Debug\TraceableEventDispatcher (originally in HttpKernel)
+ * changed Debug\TraceableEventDispatcherInterface to extend EventDispatcherInterface
+ * added RegisterListenersPass (originally in HttpKernel)
+
+2.1.0
+-----
+
+ * added TraceableEventDispatcherInterface
+ * added ContainerAwareEventDispatcher
+ * added a reference to the EventDispatcher on the Event
+ * added a reference to the Event name on the event
+ * added fluid interface to the dispatch() method which now returns the Event
+   object
+ * added GenericEvent event class
+ * added the possibility for subscribers to subscribe several times for the
+   same event
+ * added ImmutableEventDispatcher

vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcher.php

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+<?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\Debug;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
+use Symfony\Component\EventDispatcher\LegacyEventProxy;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\Stopwatch\Stopwatch;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+
+/**
+ * Collects some data about event listeners.
+ *
+ * This event dispatcher delegates the dispatching to another one.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class TraceableEventDispatcher implements TraceableEventDispatcherInterface
+{
+    protected $logger;
+    protected $stopwatch;
+
+    private $callStack;
+    private $dispatcher;
+    private $wrappedListeners;
+    private $orphanedEvents;
+    private $requestStack;
+    private $currentRequestHash = '';
+
+    public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $stopwatch, LoggerInterface $logger = null, RequestStack $requestStack = null)
+    {
+        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
+        $this->stopwatch = $stopwatch;
+        $this->logger = $logger;
+        $this->wrappedListeners = [];
+        $this->orphanedEvents = [];
+        $this->requestStack = $requestStack;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        $this->dispatcher->addListener($eventName, $listener, $priority);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addSubscriber(EventSubscriberInterface $subscriber)
+    {
+        $this->dispatcher->addSubscriber($subscriber);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeListener($eventName, $listener)
+    {
+        if (isset($this->wrappedListeners[$eventName])) {
+            foreach ($this->wrappedListeners[$eventName] as $index => $wrappedListener) {
+                if ($wrappedListener->getWrappedListener() === $listener) {
+                    $listener = $wrappedListener;
+                    unset($this->wrappedListeners[$eventName][$index]);
+                    break;
+                }
+            }
+        }
+
+        return $this->dispatcher->removeListener($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeSubscriber(EventSubscriberInterface $subscriber)
+    {
+        return $this->dispatcher->removeSubscriber($subscriber);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListeners($eventName = null)
+    {
+        return $this->dispatcher->getListeners($eventName);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListenerPriority($eventName, $listener)
+    {
+        // we might have wrapped listeners for the event (if called while dispatching)
+        // in that case get the priority by wrapper
+        if (isset($this->wrappedListeners[$eventName])) {
+            foreach ($this->wrappedListeners[$eventName] as $index => $wrappedListener) {
+                if ($wrappedListener->getWrappedListener() === $listener) {
+                    return $this->dispatcher->getListenerPriority($eventName, $wrappedListener);
+                }
+            }
+        }
+
+        return $this->dispatcher->getListenerPriority($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasListeners($eventName = null)
+    {
+        return $this->dispatcher->hasListeners($eventName);
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param string|null $eventName
+     */
+    public function dispatch($event/*, string $eventName = null*/)
+    {
+        if (null === $this->callStack) {
+            $this->callStack = new \SplObjectStorage();
+        }
+
+        $currentRequestHash = $this->currentRequestHash = $this->requestStack && ($request = $this->requestStack->getCurrentRequest()) ? spl_object_hash($request) : '';
+        $eventName = 1 < \func_num_args() ? func_get_arg(1) : null;
+
+        if (\is_object($event)) {
+            $eventName = $eventName ?? \get_class($event);
+        } else {
+            @trigger_error(sprintf('Calling the "%s::dispatch()" method with the event name as first argument is deprecated since Symfony 4.3, pass it second and provide the event object first instead.', EventDispatcherInterface::class), E_USER_DEPRECATED);
+            $swap = $event;
+            $event = $eventName ?? new Event();
+            $eventName = $swap;
+
+            if (!$event instanceof Event) {
+                throw new \TypeError(sprintf('Argument 1 passed to "%s::dispatch()" must be an instance of %s, %s given.', EventDispatcherInterface::class, Event::class, \is_object($event) ? \get_class($event) : \gettype($event)));
+            }
+        }
+
+        if (null !== $this->logger && ($event instanceof Event || $event instanceof ContractsEvent || $event instanceof StoppableEventInterface) && $event->isPropagationStopped()) {
+            $this->logger->debug(sprintf('The "%s" event is already stopped. No listeners have been called.', $eventName));
+        }
+
+        $this->preProcess($eventName);
+        try {
+            $this->beforeDispatch($eventName, $event);
+            try {
+                $e = $this->stopwatch->start($eventName, 'section');
+                try {
+                    $this->dispatcher->dispatch($event, $eventName);
+                } finally {
+                    if ($e->isStarted()) {
+                        $e->stop();
+                    }
+                }
+            } finally {
+                $this->afterDispatch($eventName, $event);
+            }
+        } finally {
+            $this->currentRequestHash = $currentRequestHash;
+            $this->postProcess($eventName);
+        }
+
+        return $event;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param Request|null $request The request to get listeners for
+     */
+    public function getCalledListeners(/* Request $request = null */)
+    {
+        if (null === $this->callStack) {
+            return [];
+        }
+
+        $hash = 1 <= \func_num_args() && null !== ($request = func_get_arg(0)) ? spl_object_hash($request) : null;
+        $called = [];
+        foreach ($this->callStack as $listener) {
+            list($eventName, $requestHash) = $this->callStack->getInfo();
+            if (null === $hash || $hash === $requestHash) {
+                $called[] = $listener->getInfo($eventName);
+            }
+        }
+
+        return $called;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param Request|null $request The request to get listeners for
+     */
+    public function getNotCalledListeners(/* Request $request = null */)
+    {
+        try {
+            $allListeners = $this->getListeners();
+        } catch (\Exception $e) {
+            if (null !== $this->logger) {
+                $this->logger->info('An exception was thrown while getting the uncalled listeners.', ['exception' => $e]);
+            }
+
+            // unable to retrieve the uncalled listeners
+            return [];
+        }
+
+        $hash = 1 <= \func_num_args() && null !== ($request = func_get_arg(0)) ? spl_object_hash($request) : null;
+        $calledListeners = [];
+
+        if (null !== $this->callStack) {
+            foreach ($this->callStack as $calledListener) {
+                list(, $requestHash) = $this->callStack->getInfo();
+
+                if (null === $hash || $hash === $requestHash) {
+                    $calledListeners[] = $calledListener->getWrappedListener();
+                }
+            }
+        }
+
+        $notCalled = [];
+        foreach ($allListeners as $eventName => $listeners) {
+            foreach ($listeners as $listener) {
+                if (!\in_array($listener, $calledListeners, true)) {
+                    if (!$listener instanceof WrappedListener) {
+                        $listener = new WrappedListener($listener, null, $this->stopwatch, $this);
+                    }
+                    $notCalled[] = $listener->getInfo($eventName);
+                }
+            }
+        }
+
+        uasort($notCalled, [$this, 'sortNotCalledListeners']);
+
+        return $notCalled;
+    }
+
+    /**
+     * @param Request|null $request The request to get orphaned events for
+     */
+    public function getOrphanedEvents(/* Request $request = null */): array
+    {
+        if (1 <= \func_num_args() && null !== $request = func_get_arg(0)) {
+            return $this->orphanedEvents[spl_object_hash($request)] ?? [];
+        }
+
+        if (!$this->orphanedEvents) {
+            return [];
+        }
+
+        return array_merge(...array_values($this->orphanedEvents));
+    }
+
+    public function reset()
+    {
+        $this->callStack = null;
+        $this->orphanedEvents = [];
+        $this->currentRequestHash = '';
+    }
+
+    /**
+     * Proxies all method calls to the original event dispatcher.
+     *
+     * @param string $method    The method name
+     * @param array  $arguments The method arguments
+     *
+     * @return mixed
+     */
+    public function __call($method, $arguments)
+    {
+        return $this->dispatcher->{$method}(...$arguments);
+    }
+
+    /**
+     * Called before dispatching the event.
+     *
+     * @param object $event
+     */
+    protected function beforeDispatch(string $eventName, $event)
+    {
+        $this->preDispatch($eventName, $event instanceof Event ? $event : new LegacyEventProxy($event));
+    }
+
+    /**
+     * Called after dispatching the event.
+     *
+     * @param object $event
+     */
+    protected function afterDispatch(string $eventName, $event)
+    {
+        $this->postDispatch($eventName, $event instanceof Event ? $event : new LegacyEventProxy($event));
+    }
+
+    /**
+     * @deprecated since Symfony 4.3, will be removed in 5.0, use beforeDispatch instead
+     */
+    protected function preDispatch($eventName, Event $event)
+    {
+    }
+
+    /**
+     * @deprecated since Symfony 4.3, will be removed in 5.0, use afterDispatch instead
+     */
+    protected function postDispatch($eventName, Event $event)
+    {
+    }
+
+    private function preProcess(string $eventName)
+    {
+        if (!$this->dispatcher->hasListeners($eventName)) {
+            $this->orphanedEvents[$this->currentRequestHash][] = $eventName;
+
+            return;
+        }
+
+        foreach ($this->dispatcher->getListeners($eventName) as $listener) {
+            $priority = $this->getListenerPriority($eventName, $listener);
+            $wrappedListener = new WrappedListener($listener instanceof WrappedListener ? $listener->getWrappedListener() : $listener, null, $this->stopwatch, $this);
+            $this->wrappedListeners[$eventName][] = $wrappedListener;
+            $this->dispatcher->removeListener($eventName, $listener);
+            $this->dispatcher->addListener($eventName, $wrappedListener, $priority);
+            $this->callStack->attach($wrappedListener, [$eventName, $this->currentRequestHash]);
+        }
+    }
+
+    private function postProcess(string $eventName)
+    {
+        unset($this->wrappedListeners[$eventName]);
+        $skipped = false;
+        foreach ($this->dispatcher->getListeners($eventName) as $listener) {
+            if (!$listener instanceof WrappedListener) { // #12845: a new listener was added during dispatch.
+                continue;
+            }
+            // Unwrap listener
+            $priority = $this->getListenerPriority($eventName, $listener);
+            $this->dispatcher->removeListener($eventName, $listener);
+            $this->dispatcher->addListener($eventName, $listener->getWrappedListener(), $priority);
+
+            if (null !== $this->logger) {
+                $context = ['event' => $eventName, 'listener' => $listener->getPretty()];
+            }
+
+            if ($listener->wasCalled()) {
+                if (null !== $this->logger) {
+                    $this->logger->debug('Notified event "{event}" to listener "{listener}".', $context);
+                }
+            } else {
+                $this->callStack->detach($listener);
+            }
+
+            if (null !== $this->logger && $skipped) {
+                $this->logger->debug('Listener "{listener}" was not called for event "{event}".', $context);
+            }
+
+            if ($listener->stoppedPropagation()) {
+                if (null !== $this->logger) {
+                    $this->logger->debug('Listener "{listener}" stopped propagation of the event "{event}".', $context);
+                }
+
+                $skipped = true;
+            }
+        }
+    }
+
+    private function sortNotCalledListeners(array $a, array $b)
+    {
+        if (0 !== $cmp = strcmp($a['event'], $b['event'])) {
+            return $cmp;
+        }
+
+        if (\is_int($a['priority']) && !\is_int($b['priority'])) {
+            return 1;
+        }
+
+        if (!\is_int($a['priority']) && \is_int($b['priority'])) {
+            return -1;
+        }
+
+        if ($a['priority'] === $b['priority']) {
+            return 0;
+        }
+
+        if ($a['priority'] > $b['priority']) {
+            return -1;
+        }
+
+        return 1;
+    }
+}

vendor/symfony/event-dispatcher/Debug/TraceableEventDispatcherInterface.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\Debug;
+
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Contracts\Service\ResetInterface;
+
+/**
+ * @deprecated since Symfony 4.1
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface TraceableEventDispatcherInterface extends EventDispatcherInterface, ResetInterface
+{
+    /**
+     * Gets the called listeners.
+     *
+     * @param Request|null $request The request to get listeners for
+     *
+     * @return array An array of called listeners
+     */
+    public function getCalledListeners(/* Request $request = null */);
+
+    /**
+     * Gets the not called listeners.
+     *
+     * @param Request|null $request The request to get listeners for
+     *
+     * @return array An array of not called listeners
+     */
+    public function getNotCalledListeners(/* Request $request = null */);
+}

vendor/symfony/event-dispatcher/Debug/WrappedListener.php

@@ -0,0 +1,136 @@
+<?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\Debug;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Symfony\Component\EventDispatcher\Event;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\EventDispatcher\LegacyEventProxy;
+use Symfony\Component\Stopwatch\Stopwatch;
+use Symfony\Component\VarDumper\Caster\ClassStub;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+
+/**
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @final since Symfony 4.3: the "Event" type-hint on __invoke() will be replaced by "object" in 5.0
+ */
+class WrappedListener
+{
+    private $listener;
+    private $optimizedListener;
+    private $name;
+    private $called;
+    private $stoppedPropagation;
+    private $stopwatch;
+    private $dispatcher;
+    private $pretty;
+    private $stub;
+    private $priority;
+    private static $hasClassStub;
+
+    public function __construct($listener, ?string $name, Stopwatch $stopwatch, EventDispatcherInterface $dispatcher = null)
+    {
+        $this->listener = $listener;
+        $this->optimizedListener = $listener instanceof \Closure ? $listener : (\is_callable($listener) ? \Closure::fromCallable($listener) : null);
+        $this->stopwatch = $stopwatch;
+        $this->dispatcher = $dispatcher;
+        $this->called = false;
+        $this->stoppedPropagation = false;
+
+        if (\is_array($listener)) {
+            $this->name = \is_object($listener[0]) ? \get_class($listener[0]) : $listener[0];
+            $this->pretty = $this->name.'::'.$listener[1];
+        } elseif ($listener instanceof \Closure) {
+            $r = new \ReflectionFunction($listener);
+            if (false !== strpos($r->name, '{closure}')) {
+                $this->pretty = $this->name = 'closure';
+            } elseif ($class = $r->getClosureScopeClass()) {
+                $this->name = $class->name;
+                $this->pretty = $this->name.'::'.$r->name;
+            } else {
+                $this->pretty = $this->name = $r->name;
+            }
+        } elseif (\is_string($listener)) {
+            $this->pretty = $this->name = $listener;
+        } else {
+            $this->name = \get_class($listener);
+            $this->pretty = $this->name.'::__invoke';
+        }
+
+        if (null !== $name) {
+            $this->name = $name;
+        }
+
+        if (null === self::$hasClassStub) {
+            self::$hasClassStub = class_exists(ClassStub::class);
+        }
+    }
+
+    public function getWrappedListener()
+    {
+        return $this->listener;
+    }
+
+    public function wasCalled()
+    {
+        return $this->called;
+    }
+
+    public function stoppedPropagation()
+    {
+        return $this->stoppedPropagation;
+    }
+
+    public function getPretty()
+    {
+        return $this->pretty;
+    }
+
+    public function getInfo($eventName)
+    {
+        if (null === $this->stub) {
+            $this->stub = self::$hasClassStub ? new ClassStub($this->pretty.'()', $this->listener) : $this->pretty.'()';
+        }
+
+        return [
+            'event' => $eventName,
+            'priority' => null !== $this->priority ? $this->priority : (null !== $this->dispatcher ? $this->dispatcher->getListenerPriority($eventName, $this->listener) : null),
+            'pretty' => $this->pretty,
+            'stub' => $this->stub,
+        ];
+    }
+
+    public function __invoke(Event $event, $eventName, EventDispatcherInterface $dispatcher)
+    {
+        if ($event instanceof LegacyEventProxy) {
+            $event = $event->getEvent();
+        }
+
+        $dispatcher = $this->dispatcher ?: $dispatcher;
+
+        $this->called = true;
+        $this->priority = $dispatcher->getListenerPriority($eventName, $this->listener);
+
+        $e = $this->stopwatch->start($this->name, 'event_listener');
+
+        ($this->optimizedListener ?? $this->listener)($event, $eventName, $dispatcher);
+
+        if ($e->isStarted()) {
+            $e->stop();
+        }
+
+        if (($event instanceof Event || $event instanceof ContractsEvent || $event instanceof StoppableEventInterface) && $event->isPropagationStopped()) {
+            $this->stoppedPropagation = true;
+        }
+    }
+}

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($this->dispatcherService)) {
+            return;
+        }
+
+        if ($container->hasParameter($this->eventAliasesParameter)) {
+            $aliases = $container->getParameter($this->eventAliasesParameter);
+            $container->getParameterBag()->remove($this->eventAliasesParameter);
+        } else {
+            $aliases = [];
+        }
+        $definition = $container->findDefinition($this->dispatcherService);
+
+        foreach ($container->findTaggedServiceIds($this->listenerTag, true) as $id => $events) {
+            foreach ($events as $event) {
+                $priority = isset($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())
+            || $type->isBuiltin()
+            || Event::class === ($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;
+    }
+}

vendor/symfony/event-dispatcher/Event.php

@@ -0,0 +1,38 @@
+<?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;
+
+/**
+ * @deprecated since Symfony 4.3, use "Symfony\Contracts\EventDispatcher\Event" instead
+ */
+class Event
+{
+    private $propagationStopped = false;
+
+    /**
+     * @return bool Whether propagation was already stopped for this event
+     *
+     * @deprecated since Symfony 4.3, use "Symfony\Contracts\EventDispatcher\Event" instead
+     */
+    public function isPropagationStopped()
+    {
+        return $this->propagationStopped;
+    }
+
+    /**
+     * @deprecated since Symfony 4.3, use "Symfony\Contracts\EventDispatcher\Event" instead
+     */
+    public function stopPropagation()
+    {
+        $this->propagationStopped = true;
+    }
+}

vendor/symfony/event-dispatcher/EventDispatcher.php

@@ -0,0 +1,314 @@
+<?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;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Symfony\Component\EventDispatcher\Debug\WrappedListener;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+
+/**
+ * The EventDispatcherInterface is the central point of Symfony's event listener system.
+ *
+ * Listeners are registered on the manager and events are dispatched through the
+ * manager.
+ *
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Jonathan Wage <jonwage@gmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Jordi Boggiano <j.boggiano@seld.be>
+ * @author Jordan Alliot <jordan.alliot@gmail.com>
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+class EventDispatcher implements EventDispatcherInterface
+{
+    private $listeners = [];
+    private $sorted = [];
+    private $optimized;
+
+    public function __construct()
+    {
+        if (__CLASS__ === \get_class($this)) {
+            $this->optimized = [];
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param string|null $eventName
+     */
+    public function dispatch($event/*, string $eventName = null*/)
+    {
+        $eventName = 1 < \func_num_args() ? func_get_arg(1) : null;
+
+        if (\is_object($event)) {
+            $eventName = $eventName ?? \get_class($event);
+        } elseif (\is_string($event) && (null === $eventName || $eventName instanceof ContractsEvent || $eventName instanceof Event)) {
+            @trigger_error(sprintf('Calling the "%s::dispatch()" method with the event name as the first argument is deprecated since Symfony 4.3, pass it as the second argument and provide the event object as the first argument instead.', EventDispatcherInterface::class), E_USER_DEPRECATED);
+            $swap = $event;
+            $event = $eventName ?? new Event();
+            $eventName = $swap;
+        } else {
+            throw new \TypeError(sprintf('Argument 1 passed to "%s::dispatch()" must be an object, %s given.', EventDispatcherInterface::class, \is_object($event) ? \get_class($event) : \gettype($event)));
+        }
+
+        if (null !== $this->optimized && null !== $eventName) {
+            $listeners = $this->optimized[$eventName] ?? (empty($this->listeners[$eventName]) ? [] : $this->optimizeListeners($eventName));
+        } else {
+            $listeners = $this->getListeners($eventName);
+        }
+
+        if ($listeners) {
+            $this->callListeners($listeners, $eventName, $event);
+        }
+
+        return $event;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListeners($eventName = null)
+    {
+        if (null !== $eventName) {
+            if (empty($this->listeners[$eventName])) {
+                return [];
+            }
+
+            if (!isset($this->sorted[$eventName])) {
+                $this->sortListeners($eventName);
+            }
+
+            return $this->sorted[$eventName];
+        }
+
+        foreach ($this->listeners as $eventName => $eventListeners) {
+            if (!isset($this->sorted[$eventName])) {
+                $this->sortListeners($eventName);
+            }
+        }
+
+        return array_filter($this->sorted);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListenerPriority($eventName, $listener)
+    {
+        if (empty($this->listeners[$eventName])) {
+            return null;
+        }
+
+        if (\is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure && 2 >= \count($listener)) {
+            $listener[0] = $listener[0]();
+            $listener[1] = $listener[1] ?? '__invoke';
+        }
+
+        foreach ($this->listeners[$eventName] as $priority => &$listeners) {
+            foreach ($listeners as &$v) {
+                if ($v !== $listener && \is_array($v) && isset($v[0]) && $v[0] instanceof \Closure && 2 >= \count($v)) {
+                    $v[0] = $v[0]();
+                    $v[1] = $v[1] ?? '__invoke';
+                }
+                if ($v === $listener) {
+                    return $priority;
+                }
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasListeners($eventName = null)
+    {
+        if (null !== $eventName) {
+            return !empty($this->listeners[$eventName]);
+        }
+
+        foreach ($this->listeners as $eventListeners) {
+            if ($eventListeners) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        $this->listeners[$eventName][$priority][] = $listener;
+        unset($this->sorted[$eventName], $this->optimized[$eventName]);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeListener($eventName, $listener)
+    {
+        if (empty($this->listeners[$eventName])) {
+            return;
+        }
+
+        if (\is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure && 2 >= \count($listener)) {
+            $listener[0] = $listener[0]();
+            $listener[1] = $listener[1] ?? '__invoke';
+        }
+
+        foreach ($this->listeners[$eventName] as $priority => &$listeners) {
+            foreach ($listeners as $k => &$v) {
+                if ($v !== $listener && \is_array($v) && isset($v[0]) && $v[0] instanceof \Closure && 2 >= \count($v)) {
+                    $v[0] = $v[0]();
+                    $v[1] = $v[1] ?? '__invoke';
+                }
+                if ($v === $listener) {
+                    unset($listeners[$k], $this->sorted[$eventName], $this->optimized[$eventName]);
+                }
+            }
+
+            if (!$listeners) {
+                unset($this->listeners[$eventName][$priority]);
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addSubscriber(EventSubscriberInterface $subscriber)
+    {
+        foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
+            if (\is_string($params)) {
+                $this->addListener($eventName, [$subscriber, $params]);
+            } elseif (\is_string($params[0])) {
+                $this->addListener($eventName, [$subscriber, $params[0]], isset($params[1]) ? $params[1] : 0);
+            } else {
+                foreach ($params as $listener) {
+                    $this->addListener($eventName, [$subscriber, $listener[0]], isset($listener[1]) ? $listener[1] : 0);
+                }
+            }
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeSubscriber(EventSubscriberInterface $subscriber)
+    {
+        foreach ($subscriber->getSubscribedEvents() as $eventName => $params) {
+            if (\is_array($params) && \is_array($params[0])) {
+                foreach ($params as $listener) {
+                    $this->removeListener($eventName, [$subscriber, $listener[0]]);
+                }
+            } else {
+                $this->removeListener($eventName, [$subscriber, \is_string($params) ? $params : $params[0]]);
+            }
+        }
+    }
+
+    /**
+     * Triggers the listeners of an event.
+     *
+     * This method can be overridden to add functionality that is executed
+     * for each listener.
+     *
+     * @param callable[] $listeners The event listeners
+     * @param string     $eventName The name of the event to dispatch
+     * @param object     $event     The event object to pass to the event handlers/listeners
+     */
+    protected function callListeners(iterable $listeners, string $eventName, $event)
+    {
+        if ($event instanceof Event) {
+            $this->doDispatch($listeners, $eventName, $event);
+
+            return;
+        }
+
+        $stoppable = $event instanceof ContractsEvent || $event instanceof StoppableEventInterface;
+
+        foreach ($listeners as $listener) {
+            if ($stoppable && $event->isPropagationStopped()) {
+                break;
+            }
+            // @deprecated: the ternary operator is part of a BC layer and should be removed in 5.0
+            $listener($listener instanceof WrappedListener ? new LegacyEventProxy($event) : $event, $eventName, $this);
+        }
+    }
+
+    /**
+     * @deprecated since Symfony 4.3, use callListeners() instead
+     */
+    protected function doDispatch($listeners, $eventName, Event $event)
+    {
+        foreach ($listeners as $listener) {
+            if ($event->isPropagationStopped()) {
+                break;
+            }
+            $listener($event, $eventName, $this);
+        }
+    }
+
+    /**
+     * Sorts the internal list of listeners for the given event by priority.
+     */
+    private function sortListeners(string $eventName)
+    {
+        krsort($this->listeners[$eventName]);
+        $this->sorted[$eventName] = [];
+
+        foreach ($this->listeners[$eventName] as &$listeners) {
+            foreach ($listeners as $k => $listener) {
+                if (\is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure && 2 >= \count($listener)) {
+                    $listener[0] = $listener[0]();
+                    $listener[1] = $listener[1] ?? '__invoke';
+                }
+                $this->sorted[$eventName][] = $listener;
+            }
+        }
+    }
+
+    /**
+     * Optimizes the internal list of listeners for the given event by priority.
+     */
+    private function optimizeListeners(string $eventName): array
+    {
+        krsort($this->listeners[$eventName]);
+        $this->optimized[$eventName] = [];
+
+        foreach ($this->listeners[$eventName] as &$listeners) {
+            foreach ($listeners as &$listener) {
+                $closure = &$this->optimized[$eventName][];
+                if (\is_array($listener) && isset($listener[0]) && $listener[0] instanceof \Closure && 2 >= \count($listener)) {
+                    $closure = static function (...$args) use (&$listener, &$closure) {
+                        if ($listener[0] instanceof \Closure) {
+                            $listener[0] = $listener[0]();
+                            $listener[1] = $listener[1] ?? '__invoke';
+                        }
+                        ($closure = \Closure::fromCallable($listener))(...$args);
+                    };
+                } else {
+                    $closure = $listener instanceof \Closure || $listener instanceof WrappedListener ? $listener : \Closure::fromCallable($listener);
+                }
+            }
+        }
+
+        return $this->optimized[$eventName];
+    }
+}

vendor/symfony/event-dispatcher/EventDispatcherInterface.php

@@ -0,0 +1,82 @@
+<?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;
+
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
+
+/**
+ * The EventDispatcherInterface is the central point of Symfony's event listener system.
+ * Listeners are registered on the manager and events are dispatched through the
+ * manager.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+interface EventDispatcherInterface extends ContractsEventDispatcherInterface
+{
+    /**
+     * Adds an event listener that listens on the specified events.
+     *
+     * @param string   $eventName The event to listen on
+     * @param callable $listener  The listener
+     * @param int      $priority  The higher this value, the earlier an event
+     *                            listener will be triggered in the chain (defaults to 0)
+     */
+    public function addListener($eventName, $listener, $priority = 0);
+
+    /**
+     * Adds an event subscriber.
+     *
+     * The subscriber is asked for all the events it is
+     * interested in and added as a listener for these events.
+     */
+    public function addSubscriber(EventSubscriberInterface $subscriber);
+
+    /**
+     * Removes an event listener from the specified events.
+     *
+     * @param string   $eventName The event to remove a listener from
+     * @param callable $listener  The listener to remove
+     */
+    public function removeListener($eventName, $listener);
+
+    public function removeSubscriber(EventSubscriberInterface $subscriber);
+
+    /**
+     * Gets the listeners of a specific event or all listeners sorted by descending priority.
+     *
+     * @param string|null $eventName The name of the event
+     *
+     * @return array The event listeners for the specified event, or all event listeners by event name
+     */
+    public function getListeners($eventName = null);
+
+    /**
+     * Gets the listener priority for a specific event.
+     *
+     * Returns null if the event or the listener does not exist.
+     *
+     * @param string   $eventName The name of the event
+     * @param callable $listener  The listener
+     *
+     * @return int|null The event listener priority
+     */
+    public function getListenerPriority($eventName, $listener);
+
+    /**
+     * Checks whether an event has any registered listeners.
+     *
+     * @param string|null $eventName The name of the event
+     *
+     * @return bool true if the specified event has any listeners, false otherwise
+     */
+    public function hasListeners($eventName = null);
+}

vendor/symfony/event-dispatcher/EventSubscriberInterface.php

@@ -0,0 +1,46 @@
+<?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;
+
+/**
+ * An EventSubscriber knows itself what events it is interested in.
+ * If an EventSubscriber is added to an EventDispatcherInterface, the manager invokes
+ * {@link getSubscribedEvents} and registers the subscriber as a listener for all
+ * returned events.
+ *
+ * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author Jonathan Wage <jonwage@gmail.com>
+ * @author Roman Borschel <roman@code-factory.org>
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+interface EventSubscriberInterface
+{
+    /**
+     * Returns an array of event names this subscriber wants to listen to.
+     *
+     * The array keys are event names and the value can be:
+     *
+     *  * The method name to call (priority defaults to 0)
+     *  * An array composed of the method name to call and the priority
+     *  * An array of arrays composed of the method names to call and respective
+     *    priorities, or 0 if unset
+     *
+     * For instance:
+     *
+     *  * ['eventName' => 'methodName']
+     *  * ['eventName' => ['methodName', $priority]]
+     *  * ['eventName' => [['methodName1', $priority], ['methodName2']]]
+     *
+     * @return array The event names to listen to
+     */
+    public static function getSubscribedEvents();
+}

vendor/symfony/event-dispatcher/GenericEvent.php

@@ -0,0 +1,175 @@
+<?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;
+
+/**
+ * Event encapsulation class.
+ *
+ * Encapsulates events thus decoupling the observer from the subject they encapsulate.
+ *
+ * @author Drak <drak@zikula.org>
+ */
+class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
+{
+    protected $subject;
+    protected $arguments;
+
+    /**
+     * Encapsulate an event with $subject and $args.
+     *
+     * @param mixed $subject   The subject of the event, usually an object or a callable
+     * @param array $arguments Arguments to store in the event
+     */
+    public function __construct($subject = null, array $arguments = [])
+    {
+        $this->subject = $subject;
+        $this->arguments = $arguments;
+    }
+
+    /**
+     * Getter for subject property.
+     *
+     * @return mixed The observer subject
+     */
+    public function getSubject()
+    {
+        return $this->subject;
+    }
+
+    /**
+     * Get argument by key.
+     *
+     * @param string $key Key
+     *
+     * @return mixed Contents of array key
+     *
+     * @throws \InvalidArgumentException if key is not found
+     */
+    public function getArgument($key)
+    {
+        if ($this->hasArgument($key)) {
+            return $this->arguments[$key];
+        }
+
+        throw new \InvalidArgumentException(sprintf('Argument "%s" not found.', $key));
+    }
+
+    /**
+     * Add argument to event.
+     *
+     * @param string $key   Argument name
+     * @param mixed  $value Value
+     *
+     * @return $this
+     */
+    public function setArgument($key, $value)
+    {
+        $this->arguments[$key] = $value;
+
+        return $this;
+    }
+
+    /**
+     * Getter for all arguments.
+     *
+     * @return array
+     */
+    public function getArguments()
+    {
+        return $this->arguments;
+    }
+
+    /**
+     * Set args property.
+     *
+     * @param array $args Arguments
+     *
+     * @return $this
+     */
+    public function setArguments(array $args = [])
+    {
+        $this->arguments = $args;
+
+        return $this;
+    }
+
+    /**
+     * Has argument.
+     *
+     * @param string $key Key of arguments array
+     *
+     * @return bool
+     */
+    public function hasArgument($key)
+    {
+        return \array_key_exists($key, $this->arguments);
+    }
+
+    /**
+     * ArrayAccess for argument getter.
+     *
+     * @param string $key Array key
+     *
+     * @return mixed
+     *
+     * @throws \InvalidArgumentException if key does not exist in $this->args
+     */
+    public function offsetGet($key)
+    {
+        return $this->getArgument($key);
+    }
+
+    /**
+     * ArrayAccess for argument setter.
+     *
+     * @param string $key   Array key to set
+     * @param mixed  $value Value
+     */
+    public function offsetSet($key, $value)
+    {
+        $this->setArgument($key, $value);
+    }
+
+    /**
+     * ArrayAccess for unset argument.
+     *
+     * @param string $key Array key
+     */
+    public function offsetUnset($key)
+    {
+        if ($this->hasArgument($key)) {
+            unset($this->arguments[$key]);
+        }
+    }
+
+    /**
+     * ArrayAccess has argument.
+     *
+     * @param string $key Array key
+     *
+     * @return bool
+     */
+    public function offsetExists($key)
+    {
+        return $this->hasArgument($key);
+    }
+
+    /**
+     * IteratorAggregate for iterating over the object like an array.
+     *
+     * @return \ArrayIterator
+     */
+    public function getIterator()
+    {
+        return new \ArrayIterator($this->arguments);
+    }
+}

vendor/symfony/event-dispatcher/ImmutableEventDispatcher.php

@@ -0,0 +1,102 @@
+<?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 $dispatcher;
+
+    public function __construct(EventDispatcherInterface $dispatcher)
+    {
+        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param string|null $eventName
+     */
+    public function dispatch($event/*, string $eventName = null*/)
+    {
+        $eventName = 1 < \func_num_args() ? func_get_arg(1) : null;
+
+        if (is_scalar($event)) {
+            // deprecated
+            $swap = $event;
+            $event = $eventName ?? new Event();
+            $eventName = $swap;
+        }
+
+        return $this->dispatcher->dispatch($event, $eventName);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addSubscriber(EventSubscriberInterface $subscriber)
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeListener($eventName, $listener)
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeSubscriber(EventSubscriberInterface $subscriber)
+    {
+        throw new \BadMethodCallException('Unmodifiable event dispatchers must not be modified.');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListeners($eventName = null)
+    {
+        return $this->dispatcher->getListeners($eventName);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListenerPriority($eventName, $listener)
+    {
+        return $this->dispatcher->getListenerPriority($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasListeners($eventName = null)
+    {
+        return $this->dispatcher->hasListeners($eventName);
+    }
+}

vendor/symfony/event-dispatcher/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2004-2019 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/symfony/event-dispatcher/LegacyEventDispatcherProxy.php

@@ -0,0 +1,147 @@
+<?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;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+use Symfony\Contracts\EventDispatcher\EventDispatcherInterface as ContractsEventDispatcherInterface;
+
+/**
+ * A helper class to provide BC/FC with the legacy signature of EventDispatcherInterface::dispatch().
+ *
+ * This class should be deprecated in Symfony 5.1
+ *
+ * @author Nicolas Grekas <p@tchwork.com>
+ */
+final class LegacyEventDispatcherProxy implements EventDispatcherInterface
+{
+    private $dispatcher;
+
+    public static function decorate(?ContractsEventDispatcherInterface $dispatcher): ?ContractsEventDispatcherInterface
+    {
+        if (null === $dispatcher) {
+            return null;
+        }
+        $r = new \ReflectionMethod($dispatcher, 'dispatch');
+        $param2 = $r->getParameters()[1] ?? null;
+
+        if (!$param2 || !$param2->hasType() || $param2->getType()->isBuiltin()) {
+            return $dispatcher;
+        }
+
+        @trigger_error(sprintf('The signature of the "%s::dispatch()" method should be updated to "dispatch($event, string $eventName = null)", not doing so is deprecated since Symfony 4.3.', $r->class), E_USER_DEPRECATED);
+
+        $self = new self();
+        $self->dispatcher = $dispatcher;
+
+        return $self;
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @param string|null $eventName
+     *
+     * @return object
+     */
+    public function dispatch($event/*, string $eventName = null*/)
+    {
+        $eventName = 1 < \func_num_args() ? func_get_arg(1) : null;
+
+        if (\is_object($event)) {
+            $eventName = $eventName ?? \get_class($event);
+        } elseif (\is_string($event) && (null === $eventName || $eventName instanceof ContractsEvent || $eventName instanceof Event)) {
+            @trigger_error(sprintf('Calling the "%s::dispatch()" method with the event name as the first argument is deprecated since Symfony 4.3, pass it as the second argument and provide the event object as the first argument instead.', ContractsEventDispatcherInterface::class), E_USER_DEPRECATED);
+            $swap = $event;
+            $event = $eventName ?? new Event();
+            $eventName = $swap;
+        } else {
+            throw new \TypeError(sprintf('Argument 1 passed to "%s::dispatch()" must be an object, %s given.', ContractsEventDispatcherInterface::class, \is_object($event) ? \get_class($event) : \gettype($event)));
+        }
+
+        $listeners = $this->getListeners($eventName);
+        $stoppable = $event instanceof Event || $event instanceof ContractsEvent || $event instanceof StoppableEventInterface;
+
+        foreach ($listeners as $listener) {
+            if ($stoppable && $event->isPropagationStopped()) {
+                break;
+            }
+            $listener($event, $eventName, $this);
+        }
+
+        return $event;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addListener($eventName, $listener, $priority = 0)
+    {
+        return $this->dispatcher->addListener($eventName, $listener, $priority);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addSubscriber(EventSubscriberInterface $subscriber)
+    {
+        return $this->dispatcher->addSubscriber($subscriber);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeListener($eventName, $listener)
+    {
+        return $this->dispatcher->removeListener($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeSubscriber(EventSubscriberInterface $subscriber)
+    {
+        return $this->dispatcher->removeSubscriber($subscriber);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListeners($eventName = null): array
+    {
+        return $this->dispatcher->getListeners($eventName);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getListenerPriority($eventName, $listener): ?int
+    {
+        return $this->dispatcher->getListenerPriority($eventName, $listener);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasListeners($eventName = null): bool
+    {
+        return $this->dispatcher->hasListeners($eventName);
+    }
+
+    /**
+     * Proxies all method calls to the original event dispatcher.
+     */
+    public function __call($method, $arguments)
+    {
+        return $this->dispatcher->{$method}(...$arguments);
+    }
+}

vendor/symfony/event-dispatcher/LegacyEventProxy.php

@@ -0,0 +1,62 @@
+<?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;
+
+use Psr\EventDispatcher\StoppableEventInterface;
+use Symfony\Contracts\EventDispatcher\Event as ContractsEvent;
+
+/**
+ * @internal to be removed in 5.0.
+ */
+final class LegacyEventProxy extends Event
+{
+    private $event;
+
+    /**
+     * @param object $event
+     */
+    public function __construct($event)
+    {
+        $this->event = $event;
+    }
+
+    /**
+     * @return object $event
+     */
+    public function getEvent()
+    {
+        return $this->event;
+    }
+
+    public function isPropagationStopped(): bool
+    {
+        if (!$this->event instanceof ContractsEvent && !$this->event instanceof StoppableEventInterface) {
+            return false;
+        }
+
+        return $this->event->isPropagationStopped();
+    }
+
+    public function stopPropagation()
+    {
+        if (!$this->event instanceof ContractsEvent) {
+            return;
+        }
+
+        $this->event->stopPropagation();
+    }
+
+    public function __call($name, $args)
+    {
+        return $this->event->{$name}(...$args);
+    }
+}

vendor/symfony/event-dispatcher/README.md

@@ -0,0 +1,15 @@
+EventDispatcher Component
+=========================
+
+The EventDispatcher component provides tools that allow your application
+components to communicate with each other by dispatching events and listening to
+them.
+
+Resources
+---------
+
+  * [Documentation](https://symfony.com/doc/current/components/event_dispatcher/index.html)
+  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+  * [Report issues](https://github.com/symfony/symfony/issues) and
+    [send Pull Requests](https://github.com/symfony/symfony/pulls)
+    in the [main Symfony repository](https://github.com/symfony/symfony)

vendor/symfony/event-dispatcher/composer.json

@@ -0,0 +1,54 @@
+{
+    "name": "symfony/event-dispatcher",
+    "type": "library",
+    "description": "Symfony EventDispatcher Component",
+    "keywords": [],
+    "homepage": "https://symfony.com",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Fabien Potencier",
+            "email": "fabien@symfony.com"
+        },
+        {
+            "name": "Symfony Community",
+            "homepage": "https://symfony.com/contributors"
+        }
+    ],
+    "require": {
+        "php": "^7.1.3",
+        "symfony/event-dispatcher-contracts": "^1.1"
+    },
+    "require-dev": {
+        "symfony/dependency-injection": "^3.4|^4.0|^5.0",
+        "symfony/expression-language": "^3.4|^4.0|^5.0",
+        "symfony/config": "^3.4|^4.0|^5.0",
+        "symfony/http-foundation": "^3.4|^4.0|^5.0",
+        "symfony/service-contracts": "^1.1|^2",
+        "symfony/stopwatch": "^3.4|^4.0|^5.0",
+        "psr/log": "~1.0"
+    },
+    "conflict": {
+        "symfony/dependency-injection": "<3.4"
+    },
+    "provide": {
+        "psr/event-dispatcher-implementation": "1.0",
+        "symfony/event-dispatcher-implementation": "1.1"
+    },
+    "suggest": {
+        "symfony/dependency-injection": "",
+        "symfony/http-kernel": ""
+    },
+    "autoload": {
+        "psr-4": { "Symfony\\Component\\EventDispatcher\\": "" },
+        "exclude-from-classmap": [
+            "/Tests/"
+        ]
+    },
+    "minimum-stability": "dev",
+    "extra": {
+        "branch-alias": {
+            "dev-master": "4.4-dev"
+        }
+    }
+}