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/vendor/zendframework/zend-code/src/Annotation/ -> AnnotationManager.php (source)

   1  <?php
   2  /**
   3   * Zend Framework (http://framework.zend.com/)
   4   *
   5   * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6   * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
   7   * @license   http://framework.zend.com/license/new-bsd New BSD License
   8   */
   9  
  10  namespace Zend\Code\Annotation;
  11  
  12  use Zend\Code\Annotation\Parser\ParserInterface;
  13  use Zend\EventManager\Event;
  14  use Zend\EventManager\EventManager;
  15  use Zend\EventManager\EventManagerAwareInterface;
  16  use Zend\EventManager\EventManagerInterface;
  17  
  18  use function get_class;
  19  use function is_object;
  20  
  21  /**
  22   * Pluggable annotation manager
  23   *
  24   * Simply composes an EventManager. When createAnnotation() is called, it fires
  25   * off an event of the same name, passing it the resolved annotation class, the
  26   * annotation content, and the raw annotation string; the first listener to
  27   * return an object will halt execution of the event, and that object will be
  28   * returned as the annotation.
  29   */
  30  class AnnotationManager implements EventManagerAwareInterface
  31  {
  32      const EVENT_CREATE_ANNOTATION = 'createAnnotation';
  33  
  34      /**
  35       * @var EventManagerInterface
  36       */
  37      protected $events;
  38  
  39      /**
  40       * Set the event manager instance
  41       *
  42       * @param  EventManagerInterface $events
  43       * @return AnnotationManager
  44       */
  45      public function setEventManager(EventManagerInterface $events)
  46      {
  47          $events->setIdentifiers([
  48              __CLASS__,
  49              get_class($this),
  50          ]);
  51          $this->events = $events;
  52  
  53          return $this;
  54      }
  55  
  56      /**
  57       * Retrieve event manager
  58       *
  59       * Lazy loads an instance if none registered.
  60       *
  61       * @return EventManagerInterface
  62       */
  63      public function getEventManager()
  64      {
  65          if (null === $this->events) {
  66              $this->setEventManager(new EventManager());
  67          }
  68  
  69          return $this->events;
  70      }
  71  
  72      /**
  73       * Attach a parser to listen to the createAnnotation event
  74       *
  75       * @param  ParserInterface $parser
  76       * @return AnnotationManager
  77       */
  78      public function attach(ParserInterface $parser)
  79      {
  80          $this->getEventManager()
  81               ->attach(self::EVENT_CREATE_ANNOTATION, [$parser, 'onCreateAnnotation']);
  82  
  83          return $this;
  84      }
  85  
  86      /**
  87       * Create Annotation
  88       *
  89       * @param  string[] $annotationData
  90       * @return false|\stdClass
  91       */
  92      public function createAnnotation(array $annotationData)
  93      {
  94          $event = new Event();
  95          $event->setName(self::EVENT_CREATE_ANNOTATION);
  96          $event->setTarget($this);
  97          $event->setParams([
  98              'class'   => $annotationData[0],
  99              'content' => $annotationData[1],
 100              'raw'     => $annotationData[2],
 101          ]);
 102  
 103          $eventManager = $this->getEventManager();
 104          $results = $eventManager->triggerEventUntil(function ($r) {
 105              return is_object($r);
 106          }, $event);
 107  
 108          $annotation = $results->last();
 109  
 110          return is_object($annotation) ? $annotation : false;
 111      }
 112  }


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