wp-includes/interactivity-api/class-wp-interactivity-api.php:392Processes the interactivity directives contained within the HTML content and updates the markup accordingly.
$htmlstringstring|null private function _process_directives( string $html ) { $p = new WP_Interactivity_API_Directives_Processor( $html ); $tag_stack = array(); $unbalanced = false; $directive_processor_prefixes = array_keys( self::$directive_processors ); $directive_processor_prefixes_reversed = array_reverse( $directive_processor_prefixes ); /* * Save the current size for each stack to restore them in case * the processing finds unbalanced tags. */ $namespace_stack_size = count( $this->namespace_stack ); $context_stack_size = count( $this->context_stack ); while ( $p->next_tag( array( 'tag_closers' => 'visit' ) ) ) { $tag_name = $p->get_tag(); /* * Directives inside SVG and MATH tags are not processed, * as they are not compatible with the Tag Processor yet. * We still process the rest of the HTML. */ if ( 'SVG' === $tag_name || 'MATH' === $tag_name ) { if ( $p->get_attribute_names_with_prefix( 'data-wp-' ) ) { /* translators: 1: SVG or MATH HTML tag, 2: Namespace of the interactive block. */ $message = sprintf( __( 'Interactivity directives were detected on an incompatible %1$s tag when processing "%2$s". These directives will be ignored in the server side render.' ), $tag_name, end( $this->namespace_stack ) ); _doing_it_wrong( __METHOD__, $message, '6.6.0' ); } $p->skip_to_tag_closer(); continue; } if ( $p->is_tag_closer() ) { list( $opening_tag_name, $directives_prefixes ) = end( $tag_stack ); if ( 0 === count( $tag_stack ) || $opening_tag_name !== $tag_name ) { /* * If the tag stack is empty or the matching opening tag is not the * same than the closing tag, it means the HTML is unbalanced and it * stops processing it. */ $unbalanced = true; break; } else { // Remove the last tag from the stack. array_pop( $tag_stack ); } } else { if ( 0 !== count( $p->get_attribute_names_with_prefix( 'data-wp-each-child' ) ) ) { /* * If the tag has a `data-wp-each-child` directive, jump to its closer * tag because those tags have already been processed. */ $p->next_balanced_tag_closer_tag(); continue; } else { $directives_prefixes = array(); // Checks if there is a server directive processor registered for each directive. foreach ( $p->get_attribute_names_with_prefix( 'data-wp-' ) as $attribute_name ) { list( $directive_prefix ) = $this->extract_prefix_and_suffix( $attribute_name ); if ( array_key_exists( $directive_prefix, self::$directive_processors ) ) { $directives_prefixes[] = $directive_prefix; } } /* * If this tag will visit its closer tag, it adds it to the tag stack * so it can process its closing tag and check for unbalanced tags. */ if ( $p->has_and_visits_its_closer_tag() ) { $tag_stack[] = array( $tag_name, $directives_prefixes ); } } } /* * If the matching opener tag didn't have any directives, it can skip the * processing.Introduced in 6.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/interactivity-api/class-wp-interactivity-api.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.