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AnnotationManager.php
001 <?php
002 /**
003 * Zend Framework (http://framework.zend.com/)
004 *
005 * @link http://github.com/zendframework/zf2 for the canonical source repository
006 * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
007 * @license http://framework.zend.com/license/new-bsd New BSD License
008 */
009
010 namespace Zend\Code\Annotation;
011
012 use Zend\Code\Annotation\Parser\ParserInterface;
013 use Zend\EventManager\Event;
014 use Zend\EventManager\EventManager;
015 use Zend\EventManager\EventManagerAwareInterface;
016 use Zend\EventManager\EventManagerInterface;
017
018 use function get_class;
019 use function is_object;
020
021 /**
022 * Pluggable annotation manager
023 *
024 * Simply composes an EventManager. When createAnnotation() is called, it fires
025 * off an event of the same name, passing it the resolved annotation class, the
026 * annotation content, and the raw annotation string; the first listener to
027 * return an object will halt execution of the event, and that object will be
028 * returned as the annotation.
029 */
030 class AnnotationManager implements EventManagerAwareInterface
031 {
032 const EVENT_CREATE_ANNOTATION = 'createAnnotation';
033
034 /**
035 * @var EventManagerInterface
036 */
037 protected $events;
038
039 /**
040 * Set the event manager instance
041 *
042 * @param EventManagerInterface $events
043 * @return AnnotationManager
044 */
045 public function setEventManager(EventManagerInterface $events)
046 {
047 $events->setIdentifiers([
048 __CLASS__,
049 get_class($this),
050 ]);
051 $this->events = $events;
052
053 return $this;
054 }
055
056 /**
057 * Retrieve event manager
058 *
059 * Lazy loads an instance if none registered.
060 *
061 * @return EventManagerInterface
062 */
063 public function getEventManager()
064 {
065 if (null === $this->events) {
066 $this->setEventManager(new EventManager());
067 }
068
069 return $this->events;
070 }
071
072 /**
073 * Attach a parser to listen to the createAnnotation event
074 *
075 * @param ParserInterface $parser
076 * @return AnnotationManager
077 */
078 public function attach(ParserInterface $parser)
079 {
080 $this->getEventManager()
081 ->attach(self::EVENT_CREATE_ANNOTATION, [$parser, 'onCreateAnnotation']);
082
083 return $this;
084 }
085
086 /**
087 * Create Annotation
088 *
089 * @param string[] $annotationData
090 * @return false|\stdClass
091 */
092 public function createAnnotation(array $annotationData)
093 {
094 $event = new Event();
095 $event->setName(self::EVENT_CREATE_ANNOTATION);
096 $event->setTarget($this);
097 $event->setParams([
098 'class' => $annotationData[0],
099 '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 }
113