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Initial import.
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320
vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
vendored
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320
vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/Debug/TraceableEventDispatcher.php
vendored
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<?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\Debug;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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use Symfony\Component\EventDispatcher\Event;
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use Symfony\Component\Stopwatch\Stopwatch;
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use Psr\Log\LoggerInterface;
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/**
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* Collects some data about event listeners.
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*
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* This event dispatcher delegates the dispatching to another one.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class TraceableEventDispatcher implements TraceableEventDispatcherInterface
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{
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protected $logger;
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protected $stopwatch;
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private $called;
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private $dispatcher;
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/**
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* Constructor.
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*
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* @param EventDispatcherInterface $dispatcher An EventDispatcherInterface instance
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* @param Stopwatch $stopwatch A Stopwatch instance
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* @param LoggerInterface $logger A LoggerInterface instance
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*/
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public function __construct(EventDispatcherInterface $dispatcher, Stopwatch $stopwatch, LoggerInterface $logger = null)
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{
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$this->dispatcher = $dispatcher;
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$this->stopwatch = $stopwatch;
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$this->logger = $logger;
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$this->called = array();
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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, $priority = 0)
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{
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$this->dispatcher->addListener($eventName, $listener, $priority);
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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 $subscriber)
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{
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$this->dispatcher->addSubscriber($subscriber);
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}
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/**
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* {@inheritdoc}
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*/
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public function removeListener($eventName, $listener)
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{
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return $this->dispatcher->removeListener($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 removeSubscriber(EventSubscriberInterface $subscriber)
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{
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return $this->dispatcher->removeSubscriber($subscriber);
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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 hasListeners($eventName = null)
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{
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return $this->dispatcher->hasListeners($eventName);
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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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if (null === $event) {
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$event = new Event();
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}
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$this->preProcess($eventName);
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$this->preDispatch($eventName, $event);
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$e = $this->stopwatch->start($eventName, 'section');
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$this->dispatcher->dispatch($eventName, $event);
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if ($e->isStarted()) {
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$e->stop();
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}
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$this->postDispatch($eventName, $event);
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$this->postProcess($eventName);
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return $event;
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}
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/**
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* {@inheritdoc}
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*/
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public function getCalledListeners()
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{
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$called = array();
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foreach ($this->called as $eventName => $listeners) {
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foreach ($listeners as $listener) {
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$info = $this->getListenerInfo($listener->getWrappedListener(), $eventName);
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$called[$eventName.'.'.$info['pretty']] = $info;
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}
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}
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return $called;
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}
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/**
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* {@inheritdoc}
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*/
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public function getNotCalledListeners()
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{
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try {
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$allListeners = $this->getListeners();
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} catch (\Exception $e) {
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if (null !== $this->logger) {
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$this->logger->info(sprintf('An exception was thrown while getting the uncalled listeners (%s)', $e->getMessage()), array('exception' => $e));
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}
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// unable to retrieve the uncalled listeners
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return array();
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}
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$notCalled = array();
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foreach ($allListeners as $eventName => $listeners) {
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foreach ($listeners as $listener) {
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$called = false;
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if (isset($this->called[$eventName])) {
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foreach ($this->called[$eventName] as $l) {
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if ($l->getWrappedListener() === $listener) {
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$called = true;
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break;
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}
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}
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}
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if (!$called) {
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$info = $this->getListenerInfo($listener, $eventName);
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$notCalled[$eventName.'.'.$info['pretty']] = $info;
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}
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}
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}
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return $notCalled;
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}
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/**
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* Proxies all method calls to the original event dispatcher.
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*
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* @param string $method The method name
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* @param array $arguments The method arguments
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*
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* @return mixed
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*/
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public function __call($method, $arguments)
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{
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return call_user_func_array(array($this->dispatcher, $method), $arguments);
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}
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/**
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* Called before dispatching the event.
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*
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* @param string $eventName The event name
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* @param Event $event The event
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*/
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protected function preDispatch($eventName, Event $event)
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{
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}
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/**
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* Called after dispatching the event.
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*
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* @param string $eventName The event name
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* @param Event $event The event
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*/
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protected function postDispatch($eventName, Event $event)
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{
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}
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private function preProcess($eventName)
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{
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foreach ($this->dispatcher->getListeners($eventName) as $listener) {
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$this->dispatcher->removeListener($eventName, $listener);
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$info = $this->getListenerInfo($listener, $eventName);
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$name = isset($info['class']) ? $info['class'] : $info['type'];
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$this->dispatcher->addListener($eventName, new WrappedListener($listener, $name, $this->stopwatch, $this));
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}
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}
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private function postProcess($eventName)
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{
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$skipped = false;
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foreach ($this->dispatcher->getListeners($eventName) as $listener) {
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if (!$listener instanceof WrappedListener) { // #12845: a new listener was added during dispatch.
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continue;
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}
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// Unwrap listener
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$this->dispatcher->removeListener($eventName, $listener);
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$this->dispatcher->addListener($eventName, $listener->getWrappedListener());
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$info = $this->getListenerInfo($listener->getWrappedListener(), $eventName);
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if ($listener->wasCalled()) {
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if (null !== $this->logger) {
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$this->logger->debug(sprintf('Notified event "%s" to listener "%s".', $eventName, $info['pretty']));
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}
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if (!isset($this->called[$eventName])) {
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$this->called[$eventName] = new \SplObjectStorage();
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}
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$this->called[$eventName]->attach($listener);
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}
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if (null !== $this->logger && $skipped) {
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$this->logger->debug(sprintf('Listener "%s" was not called for event "%s".', $info['pretty'], $eventName));
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}
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if ($listener->stoppedPropagation()) {
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if (null !== $this->logger) {
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$this->logger->debug(sprintf('Listener "%s" stopped propagation of the event "%s".', $info['pretty'], $eventName));
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}
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$skipped = true;
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}
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}
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}
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/**
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* Returns information about the listener
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*
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* @param object $listener The listener
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* @param string $eventName The event name
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*
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* @return array Information about the listener
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*/
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private function getListenerInfo($listener, $eventName)
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{
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$info = array(
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'event' => $eventName,
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);
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if ($listener instanceof \Closure) {
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$info += array(
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'type' => 'Closure',
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'pretty' => 'closure',
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);
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} elseif (is_string($listener)) {
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try {
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$r = new \ReflectionFunction($listener);
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$file = $r->getFileName();
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$line = $r->getStartLine();
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} catch (\ReflectionException $e) {
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$file = null;
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$line = null;
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}
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$info += array(
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'type' => 'Function',
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'function' => $listener,
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'file' => $file,
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'line' => $line,
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'pretty' => $listener,
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);
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} elseif (is_array($listener) || (is_object($listener) && is_callable($listener))) {
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if (!is_array($listener)) {
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$listener = array($listener, '__invoke');
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}
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$class = is_object($listener[0]) ? get_class($listener[0]) : $listener[0];
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try {
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$r = new \ReflectionMethod($class, $listener[1]);
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$file = $r->getFileName();
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$line = $r->getStartLine();
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} catch (\ReflectionException $e) {
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$file = null;
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$line = null;
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}
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$info += array(
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'type' => 'Method',
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'class' => $class,
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'method' => $listener[1],
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'file' => $file,
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'line' => $line,
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'pretty' => $class.'::'.$listener[1],
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);
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}
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return $info;
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}
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}
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@ -0,0 +1,34 @@
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<?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\Debug;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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interface TraceableEventDispatcherInterface extends EventDispatcherInterface
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{
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/**
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* Gets the called listeners.
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*
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* @return array An array of called listeners
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*/
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public function getCalledListeners();
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/**
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* Gets the not called listeners.
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*
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* @return array An array of not called listeners
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*/
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public function getNotCalledListeners();
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}
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71
vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
vendored
Normal file
71
vendor/symfony/event-dispatcher/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
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@ -0,0 +1,71 @@
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<?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\Debug;
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use Symfony\Component\Stopwatch\Stopwatch;
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use Symfony\Component\EventDispatcher\Event;
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use Symfony\Component\EventDispatcher\EventDispatcherInterface;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class WrappedListener
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{
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private $listener;
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private $name;
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private $called;
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private $stoppedPropagation;
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private $stopwatch;
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private $dispatcher;
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public function __construct($listener, $name, Stopwatch $stopwatch, EventDispatcherInterface $dispatcher = null)
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{
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$this->listener = $listener;
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$this->name = $name;
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$this->stopwatch = $stopwatch;
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$this->dispatcher = $dispatcher;
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$this->called = false;
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$this->stoppedPropagation = false;
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}
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public function getWrappedListener()
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{
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return $this->listener;
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}
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public function wasCalled()
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{
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return $this->called;
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}
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public function stoppedPropagation()
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{
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return $this->stoppedPropagation;
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}
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public function __invoke(Event $event, $eventName, EventDispatcherInterface $dispatcher)
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{
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$this->called = true;
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$e = $this->stopwatch->start($this->name, 'event_listener');
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call_user_func($this->listener, $event, $eventName, $this->dispatcher ?: $dispatcher);
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if ($e->isStarted()) {
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$e->stop();
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}
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if ($event->isPropagationStopped()) {
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$this->stoppedPropagation = true;
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}
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}
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}
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