WP_Sitemaps_Taxonomies

17class WP_Sitemaps_Taxonomies extends WP_Sitemaps_Provider {18	/**19	 * WP_Sitemaps_Taxonomies constructor.20	 *21	 * @since 5.5.022	 */23	public function __construct() {24		$this->name        = 'taxonomies';25		$this->object_type = 'term';26	}27 28	/**29	 * Returns all public, registered taxonomies.30	 *31	 * @since 5.5.032	 *33	 * @return WP_Taxonomy[] Array of registered taxonomy objects keyed by their name.34	 */35	public function get_object_subtypes() {36		$taxonomies = get_taxonomies( array( 'public' => true ), 'objects' );37 38		$taxonomies = array_filter( $taxonomies, 'is_taxonomy_viewable' );39 40		/**41		 * Filters the list of taxonomy object subtypes available within the sitemap.42		 *43		 * @since 5.5.044		 *45		 * @param WP_Taxonomy[] $taxonomies Array of registered taxonomy objects keyed by their name.46		 */47		return apply_filters( 'wp_sitemaps_taxonomies', $taxonomies );48	}49 50	/**51	 * Gets a URL list for a taxonomy sitemap.52	 *53	 * @since 5.5.054	 * @since 5.9.0 Renamed `$taxonomy` to `$object_subtype` to match parent class55	 *              for PHP 8 named parameter support.56	 *57	 * @param int    $page_num       Page of results.58	 * @param string $object_subtype Optional. Taxonomy name. Default empty.59	 * @return array[] Array of URL information for a sitemap.60	 */61	public function get_url_list( $page_num, $object_subtype = '' ) {62		// Restores the more descriptive, specific name for use within this method.63		$taxonomy = $object_subtype;64 65		$supported_types = $this->get_object_subtypes();66 67		// Bail early if the queried taxonomy is not supported.68		if ( ! isset( $supported_types[ $taxonomy ] ) ) {69			return array();70		}71 72		/**73		 * Filters the taxonomies URL list before it is generated.74		 *75		 * Returning a non-null value will effectively short-circuit the generation,76		 * returning that value instead.77		 *78		 * @since 5.5.079		 *80		 * @param array[]|null $url_list The URL list. Default null.81		 * @param string       $taxonomy Taxonomy name.82		 * @param int          $page_num Page of results.83		 */84		$url_list = apply_filters(85			'wp_sitemaps_taxonomies_pre_url_list',86			null,87			$taxonomy,88			$page_num89		);90 91		if ( null !== $url_list ) {92			return $url_list;93		}94 95		$url_list = array();96