WP_Interactivity_API::data_wp_context_processor( WP_Interactivity_API_Directives_Processor $p, string $mode, array $context_stack, array $namespace_stack )

Source

 * @since 6.6.0 The function now adds a warning when the namespace is null, falsy, or the directive value is empty.
 * @since 6.6.0 Removed `default_namespace` and `context` arguments.
 * @since 6.6.0 Add support for derived state.
 *
 * @param string|true $directive_value The directive attribute value string or `true` when it's a boolean attribute.
 * @return mixed|null The result of the evaluation. Null if the reference path doesn't exist or the namespace is falsy.
 */
private function evaluate( $directive_value ) {
	$default_namespace = end( $this->namespace_stack );
	$context           = end( $this->context_stack );

	list( $ns, $path ) = $this->extract_directive_value( $directive_value, $default_namespace );
	if ( ! $ns || ! $path ) {
		/* translators: %s: The directive value referenced. */
		$message = sprintf( __( 'Namespace or reference path cannot be empty. Directive value referenced: %s' ), $directive_value );
		_doing_it_wrong( __METHOD__, $message, '6.6.0' );
		return null;
	}

	$store = array(
		'state'   => $this->state_data[ $ns ] ?? array(),
		'context' => $context[ $ns ] ?? array(),
	);

	// Checks if the reference path is preceded by a negation operator (!).
	$should_negate_value = '!' === $path[0];
	$path                = $should_negate_value ? substr( $path, 1 ) : $path;

	// Extracts the value from the store using the reference path.
	$path_segments = explode( '.', $path );
	$current       = $store;
	foreach ( $path_segments as $path_segment ) {
		if ( ( is_array( $current ) || $current instanceof ArrayAccess ) && isset( $current[ $path_segment ] ) ) {

View all references View on Trac View on GitHub