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@ -45,6 +45,7 @@ class EventDispatcher
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protected $loader;
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protected $process;
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protected $listeners;
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private $eventStack;
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/**
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* Constructor.
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@ -58,6 +59,7 @@ class EventDispatcher
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$this->composer = $composer;
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$this->io = $io;
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$this->process = $process ?: new ProcessExecutor($io);
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$this->eventStack = array();
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}
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/**
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@ -145,6 +147,8 @@ class EventDispatcher
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{
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$listeners = $this->getListeners($event);
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$this->pushEvent($event);
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$return = 0;
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foreach ($listeners as $callable) {
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if (!is_string($callable) && is_callable($callable)) {
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@ -198,6 +202,8 @@ class EventDispatcher
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}
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}
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$this->popEvent();
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return $return;
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}
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@ -381,4 +387,31 @@ class EventDispatcher
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{
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return '@' === substr($callable, 0, 1);
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}
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/**
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* Push an event to the stack of active event
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*
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* @param Event $event
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* @throws \RuntimeException
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* @return number
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*/
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protected function pushEvent(Event $event)
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{
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$eventName = $event->getName();
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if (in_array($eventName, $this->eventStack)) {
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throw new \RuntimeException(sprintf("Recursive call to '%s' detected", $eventName));
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}
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return array_push($this->eventStack, $eventName);
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}
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/**
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* Pops the active event from the stack
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*
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* @return mixed
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*/
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protected function popEvent()
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{
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return array_pop($this->eventStack);
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}
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}
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