wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\DataModel\Serializers;

use Serializers\DispatchableSerializer;
use Serializers\Exceptions\SerializationException;
use Serializers\Exceptions\UnsupportedObjectException;
use Serializers\Serializer;
use Wikibase\DataModel\ReferenceList;

/**
 * Package private
 *
 * @license GPL-2.0-or-later
 * @author Thomas Pellissier Tanon
 */
class ReferenceListSerializer implements DispatchableSerializer {

    /**
     * @var Serializer
     */
    private $referenceSerializer;

    public function __construct( Serializer $referenceSerializer ) {
        $this->referenceSerializer = $referenceSerializer;
    }

    /**
     * @see Serializer::isSerializerFor
     *
     * @param mixed $object
     *
     * @return bool
     */
    public function isSerializerFor( $object ) {
        return $object instanceof ReferenceList;
    }

    /**
     * @see Serializer::serialize
     *
     * @param ReferenceList $object
     *
     * @throws SerializationException
     * @return array[]
     */
    public function serialize( $object ) {
        if ( !$this->isSerializerFor( $object ) ) {
            throw new UnsupportedObjectException(
                $object,
                'ReferenceListSerializer can only serialize ReferenceList objects'
            );
        }

        return $this->getSerialized( $object );
    }

    private function getSerialized( ReferenceList $references ) {
        $serialization = [];

        foreach ( $references as $reference ) {
            $serialization[] = $this->referenceSerializer->serialize( $reference );
        }

        return $serialization;
    }

}