wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\DataModel\Serializers;

use Serializers\Exceptions\UnsupportedObjectException;
use Serializers\Serializer;
use Wikibase\DataModel\Term\Term;
use Wikibase\DataModel\Term\TermFallback;

/**
 * Package private
 *
 * @license GPL-2.0-or-later
 * @author Addshore
 */
class TermSerializer implements Serializer {

    /**
     * @param Term $object
     *
     * @return string[]
     */
    public function serialize( $object ) {
        $this->assertIsSerializerFor( $object );
        return $this->getSerialized( $object );
    }

    private function assertIsSerializerFor( $object ) {
        if ( !( $object instanceof Term ) ) {
            throw new UnsupportedObjectException(
                $object,
                'TermSerializer can only serialize Term objects'
            );
        }
    }

    /**
     * @param Term $term
     *
     * @return string[]
     */
    private function getSerialized( Term $term ) {
        $result = [
            'language' => $term->getLanguageCode(),
            'value' => $term->getText(),
        ];

        if ( $term instanceof TermFallback ) {
            $result['language'] = $term->getActualLanguageCode();
            $result['source'] = $term->getSourceLanguageCode();
        }

        return $result;
    }

}