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<?php |
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namespace Intraxia\Jaxion\Core; |
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use Doctrine\Common\Annotations\AnnotationReader; |
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use Doctrine\Common\Annotations\AnnotationRegistry; |
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use ReflectionClass; |
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/** |
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* HooksReader class. |
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*/ |
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class HooksReader { |
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/** |
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* Construct a new HooksReader instance. |
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*/ |
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private function __construct() { |
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$this->reader = new AnnotationReader(); |
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AnnotationRegistry::registerFile( |
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__DIR__ . '/Annotations.php' |
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); |
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} |
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/** |
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* Get the Annotation reader. |
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* |
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* @return AnnotationReader |
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*/ |
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private function reader() { |
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return $this->reader; |
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} |
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/** |
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* Get the shared reader instance. |
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* |
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* @return HooksReader |
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*/ |
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static private function instance() { |
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static $instance; |
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if ( ! $instance ) { |
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$instance = new HooksReader(); |
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} |
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return $instance; |
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} |
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/** |
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* Shared implementation of hook reading logic. |
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* |
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* @param object $target Object to read annotations from. |
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* @param \Closure $condition Whether the annotation should be registered. |
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* @return array |
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*/ |
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static public function read( $target, $condition ) { |
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$reader = static::instance()->reader(); |
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$rmethods = (new ReflectionClass( $target ))->getMethods(); |
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$hooks = []; |
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foreach ( $rmethods as $rmethod ) { |
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foreach ( $reader->getMethodAnnotations( $rmethod ) as $annotation ) { |
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if ( $condition( $annotation ) ) { |
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$hooks[] = [ |
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'hook' => $annotation->hook, |
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'method' => $rmethod->getName(), |
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'priority' => $annotation->priority, |
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'args' => $annotation->args, |
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]; |
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} |
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} |
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} |
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return $hooks; |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: