AttributeBase.php

<?php

namespace Drupal\Component\Plugin\Attribute;


/**
 * Provides a base class for classed attributes.
 */
abstract class AttributeBase implements AttributeInterface {
    
    /**
     * The class used for this attribute class.
     *
     * @var class-string
     */
    protected string $class;
    
    /**
     * The provider of the attribute class.
     */
    protected string|null $provider = NULL;
    
    /**
     * @param string $id
     *   The attribute class ID.
     */
    public function __construct(string $id) {
    }
    
    /**
     * {@inheritdoc}
     */
    public function getProvider() : ?string {
        return $this->provider;
    }
    
    /**
     * {@inheritdoc}
     */
    public function setProvider(string $provider) : void {
        $this->provider = $provider;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getId() : string {
        return $this->id;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getClass() : string {
        return $this->class;
    }
    
    /**
     * {@inheritdoc}
     */
    public function setClass(string $class) : void {
        $this->class = $class;
    }
    
    /**
     * {@inheritdoc}
     */
    public function get() : array|object {
        return array_filter(get_object_vars($this) + [
            'class' => $this->getClass(),
            'provider' => $this->getProvider(),
        ], function ($value, $key) {
            return !($value === NULL && ($key === 'deriver' || $key === 'provider'));
        }, ARRAY_FILTER_USE_BOTH);
    }

}