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ðŸ“ ..
ðŸ“ ID3
ðŸ“ IXR
ðŸ“ PHPMailer
ðŸ“ Requests
ðŸ“ SimplePie
ðŸ“ Text
ðŸ“„ admin-bar.php(33.55 KB)
ðŸ“ assets
ðŸ“„ atomlib.php(11.67 KB)
ðŸ“„ author-template.php(18.43 KB)
ðŸ“„ block-editor.php(23.61 KB)
ðŸ“„ block-i18n.json(316 B)
ðŸ“ block-patterns
ðŸ“„ block-patterns.php(15.07 KB)
ðŸ“ block-supports
ðŸ“„ block-template-utils.php(44.99 KB)
ðŸ“„ block-template.php(10.56 KB)
ðŸ“ blocks
ðŸ“„ blocks.php(50.69 KB)
ðŸ“„ bookmark-template.php(12.6 KB)
ðŸ“„ bookmark.php(15 KB)
ðŸ“„ cache-compat.php(5.83 KB)
ðŸ“„ cache.php(13.16 KB)
ðŸ“„ canonical.php(32.55 KB)
ðŸ“„ capabilities.php(39.06 KB)
ðŸ“„ category-template.php(55.67 KB)
ðŸ“„ category.php(12.4 KB)
ðŸ“ certificates
ðŸ“„ class-IXR.php(2.48 KB)
ðŸ“„ class-feed.php(529 B)
ðŸ“„ class-http.php(367 B)
ðŸ“„ class-json.php(42.66 KB)
ðŸ“„ class-oembed.php(401 B)
ðŸ“„ class-phpass.php(6.55 KB)
ðŸ“„ class-phpmailer.php(664 B)
ðŸ“„ class-pop3.php(20.48 KB)
ðŸ“„ class-requests.php(2.18 KB)
ðŸ“„ class-simplepie.php(95.78 KB)
ðŸ“„ class-smtp.php(457 B)
ðŸ“„ class-snoopy.php(36.83 KB)
ðŸ“„ class-walker-category-dropdown.php(2.42 KB)
ðŸ“„ class-walker-category.php(8.27 KB)
ðŸ“„ class-walker-comment.php(13.88 KB)
ðŸ“„ class-walker-nav-menu.php(9.35 KB)
ðŸ“„ class-walker-page-dropdown.php(2.64 KB)
ðŸ“„ class-walker-page.php(7.42 KB)
ðŸ“„ class-wp-admin-bar.php(17.08 KB)
ðŸ“„ class-wp-ajax-response.php(5.14 KB)
ðŸ“„ class-wp-application-passwords.php(11.97 KB)
ðŸ“„ class-wp-block-editor-context.php(1.32 KB)
ðŸ“„ class-wp-block-list.php(4.64 KB)
ðŸ“„ class-wp-block-parser.php(14.89 KB)
ðŸ“„ class-wp-block-pattern-categories-registry.php(5.25 KB)
ðŸ“„ class-wp-block-patterns-registry.php(8.15 KB)
ðŸ“„ class-wp-block-styles-registry.php(5.75 KB)
ðŸ“„ class-wp-block-supports.php(5.37 KB)
ðŸ“„ class-wp-block-template.php(1.8 KB)
ðŸ“„ class-wp-block-type-registry.php(4.56 KB)
ðŸ“„ class-wp-block-type.php(13.68 KB)
ðŸ“„ class-wp-block.php(8.21 KB)
ðŸ“„ class-wp-comment-query.php(46.55 KB)
ðŸ“„ class-wp-comment.php(9.13 KB)
ðŸ“„ class-wp-customize-control.php(25.22 KB)
ðŸ“„ class-wp-customize-manager.php(197.39 KB)
ðŸ“„ class-wp-customize-nav-menus.php(55.96 KB)
ðŸ“„ class-wp-customize-panel.php(10.42 KB)
ðŸ“„ class-wp-customize-section.php(10.98 KB)
ðŸ“„ class-wp-customize-setting.php(29.19 KB)
ðŸ“„ class-wp-customize-widgets.php(69.95 KB)
ðŸ“„ class-wp-date-query.php(34.84 KB)
ðŸ“„ class-wp-dependencies.php(13.73 KB)
ðŸ“„ class-wp-dependency.php(2.57 KB)
ðŸ“„ class-wp-editor.php(70.27 KB)
ðŸ“„ class-wp-embed.php(15.61 KB)
ðŸ“„ class-wp-error.php(7.33 KB)
ðŸ“„ class-wp-fatal-error-handler.php(7.69 KB)
ðŸ“„ class-wp-feed-cache-transient.php(2.53 KB)
ðŸ“„ class-wp-feed-cache.php(996 B)
ðŸ“„ class-wp-hook.php(15.35 KB)
ðŸ“„ class-wp-http-cookie.php(7.24 KB)
ðŸ“„ class-wp-http-curl.php(12.12 KB)
ðŸ“„ class-wp-http-encoding.php(6.53 KB)
ðŸ“„ class-wp-http-ixr-client.php(3.42 KB)
ðŸ“„ class-wp-http-proxy.php(5.84 KB)
ðŸ“„ class-wp-http-requests-hooks.php(1.97 KB)
ðŸ“„ class-wp-http-requests-response.php(4.3 KB)
ðŸ“„ class-wp-http-response.php(2.91 KB)
ðŸ“„ class-wp-http-streams.php(16.31 KB)
ðŸ“„ class-wp-http.php(39.41 KB)
ðŸ“„ class-wp-image-editor-gd.php(16.18 KB)
ðŸ“„ class-wp-image-editor-imagick.php(29.04 KB)
ðŸ“„ class-wp-image-editor.php(16.66 KB)
ðŸ“„ class-wp-list-util.php(7.27 KB)
ðŸ“„ class-wp-locale-switcher.php(6.39 KB)
ðŸ“„ class-wp-locale.php(15.73 KB)
ðŸ“„ class-wp-matchesmapregex.php(1.78 KB)
ðŸ“„ class-wp-meta-query.php(29.8 KB)
ðŸ“„ class-wp-metadata-lazyloader.php(5.25 KB)
ðŸ“„ class-wp-network-query.php(18.83 KB)
ðŸ“„ class-wp-network.php(11.89 KB)
ðŸ“„ class-wp-object-cache.php(17.18 KB)
ðŸ“„ class-wp-oembed-controller.php(6.72 KB)
ðŸ“„ class-wp-oembed.php(30.45 KB)
ðŸ“„ class-wp-paused-extensions-storage.php(4.94 KB)
ðŸ“„ class-wp-post-type.php(25.18 KB)
ðŸ“„ class-wp-post.php(6.33 KB)
ðŸ“„ class-wp-query.php(146.4 KB)
ðŸ“„ class-wp-recovery-mode-cookie-service.php(6.72 KB)
ðŸ“„ class-wp-recovery-mode-email-service.php(10.92 KB)
ðŸ“„ class-wp-recovery-mode-key-service.php(4.4 KB)
ðŸ“„ class-wp-recovery-mode-link-service.php(3.38 KB)
ðŸ“„ class-wp-recovery-mode.php(11.16 KB)
ðŸ“„ class-wp-rewrite.php(61.6 KB)
ðŸ“„ class-wp-role.php(2.46 KB)
ðŸ“„ class-wp-roles.php(8.38 KB)
ðŸ“„ class-wp-scripts.php(18.86 KB)
ðŸ“„ class-wp-session-tokens.php(7.28 KB)
ðŸ“„ class-wp-simplepie-file.php(3.32 KB)
ðŸ“„ class-wp-simplepie-sanitize-kses.php(1.76 KB)
ðŸ“„ class-wp-site-query.php(30.22 KB)
ðŸ“„ class-wp-site.php(7.28 KB)
ðŸ“„ class-wp-styles.php(10.64 KB)
ðŸ“„ class-wp-tax-query.php(19.06 KB)
ðŸ“„ class-wp-taxonomy.php(18.03 KB)
ðŸ“„ class-wp-term-query.php(39.48 KB)
ðŸ“„ class-wp-term.php(5.17 KB)
ðŸ“„ class-wp-text-diff-renderer-inline.php(830 B)
ðŸ“„ class-wp-text-diff-renderer-table.php(16.76 KB)
ðŸ“„ class-wp-textdomain-registry.php(5.83 KB)
ðŸ“„ class-wp-theme-json-data.php(1.52 KB)
ðŸ“„ class-wp-theme-json-resolver.php(23.41 KB)
ðŸ“„ class-wp-theme-json-schema.php(4.22 KB)
ðŸ“„ class-wp-theme-json.php(116.44 KB)
ðŸ“„ class-wp-theme.php(54.16 KB)
ðŸ“„ class-wp-user-meta-session-tokens.php(2.92 KB)
ðŸ“„ class-wp-user-query.php(38.89 KB)
ðŸ“„ class-wp-user-request.php(2.17 KB)
ðŸ“„ class-wp-user.php(22.23 KB)
ðŸ“„ class-wp-walker.php(12.86 KB)
ðŸ“„ class-wp-widget-factory.php(3.27 KB)
ðŸ“„ class-wp-widget.php(17.95 KB)
ðŸ“„ class-wp-xmlrpc-server.php(208.55 KB)
ðŸ“„ class-wp.php(25.39 KB)
ðŸ“„ class-wpdb.php(116.29 KB)
ðŸ“„ class.wp-dependencies.php(373 B)
ðŸ“„ class.wp-scripts.php(343 B)
ðŸ“„ class.wp-styles.php(338 B)
ðŸ“„ comment-template.php(97.57 KB)
ðŸ“„ comment.php(125.63 KB)
ðŸ“„ compat.php(15 KB)
ðŸ“„ cron.php(40.56 KB)
ðŸ“ css
ðŸ“ customize
ðŸ“„ date.php(400 B)
ðŸ“„ default-constants.php(10.29 KB)
ðŸ“„ default-filters.php(30.85 KB)
ðŸ“„ default-widgets.php(2.17 KB)
ðŸ“„ deprecated.php(133.95 KB)
ðŸ“„ embed-template.php(338 B)
ðŸ“„ embed.php(36.58 KB)
ðŸ“„ error-protection.php(4.02 KB)
ðŸ“„ feed-atom-comments.php(5.32 KB)
ðŸ“„ feed-atom.php(2.98 KB)
ðŸ“„ feed-rdf.php(2.61 KB)
ðŸ“„ feed-rss.php(1.16 KB)
ðŸ“„ feed-rss2-comments.php(3.98 KB)
ðŸ“„ feed-rss2.php(3.71 KB)
ðŸ“„ feed.php(22.46 KB)
ðŸ“ fonts
ðŸ“„ formatting.php(325.29 KB)
ðŸ“„ functions.php(255.49 KB)
ðŸ“„ functions.wp-scripts.php(13.2 KB)
ðŸ“„ functions.wp-styles.php(8.38 KB)
ðŸ“„ general-template.php(163.92 KB)
ðŸ“„ global-styles-and-settings.php(13.86 KB)
ðŸ“ html-api
ðŸ“„ http.php(22.62 KB)
ðŸ“„ https-detection.php(6.7 KB)
ðŸ“„ https-migration.php(4.62 KB)
ðŸ“ images
ðŸ“ js
ðŸ“„ kses.php(69.6 KB)
ðŸ“„ l10n.php(60.47 KB)
ðŸ“„ link-template.php(150.32 KB)
ðŸ“„ load.php(50.37 KB)
ðŸ“„ locale.php(162 B)
ðŸ“„ media-template.php(59.9 KB)
ðŸ“„ media.php(188.13 KB)
ðŸ“„ meta.php(61.72 KB)
ðŸ“„ ms-blogs.php(24.93 KB)
ðŸ“„ ms-default-constants.php(4.78 KB)
ðŸ“„ ms-default-filters.php(6.48 KB)
ðŸ“„ ms-deprecated.php(21.25 KB)
ðŸ“„ ms-files.php(2.59 KB)
ðŸ“„ ms-functions.php(89.14 KB)
ðŸ“„ ms-load.php(19.38 KB)
ðŸ“„ ms-network.php(3.71 KB)
ðŸ“„ ms-settings.php(4.03 KB)
ðŸ“„ ms-site.php(39.13 KB)
ðŸ“„ nav-menu-template.php(25.18 KB)
ðŸ“„ nav-menu.php(42.21 KB)
ðŸ“„ option.php(77.86 KB)
ðŸ“ php-compat
ðŸ“„ pluggable-deprecated.php(6.12 KB)
ðŸ“„ pluggable.php(108.27 KB)
ðŸ“„ plugin.php(35.15 KB)
ðŸ“ pomo
ðŸ“„ post-formats.php(6.93 KB)
ðŸ“„ post-template.php(65.28 KB)
ðŸ“„ post-thumbnail-template.php(10.75 KB)
ðŸ“„ post.php(268.82 KB)
ðŸ“„ query.php(36.13 KB)
ðŸ“ random_compat
ðŸ“„ registration-functions.php(200 B)
ðŸ“„ registration.php(200 B)
ðŸ“ rest-api
ðŸ“„ rest-api.php(94.41 KB)
ðŸ“„ revision.php(24.82 KB)
ðŸ“„ rewrite.php(19.04 KB)
ðŸ“„ robots-template.php(5.06 KB)
ðŸ“„ rss-functions.php(255 B)
ðŸ“„ rss.php(22.46 KB)
ðŸ“„ script-loader.php(133.74 KB)
ðŸ“„ session.php(258 B)
ðŸ“„ shortcodes.php(20.93 KB)
ðŸ“ sitemaps
ðŸ“„ sitemaps.php(3.16 KB)
ðŸ“ sodium_compat
ðŸ“„ spl-autoload-compat.php(441 B)
ðŸ“ style-engine
ðŸ“„ style-engine.php(6.25 KB)
ðŸ“„ taxonomy.php(168.15 KB)
ðŸ“„ template-canvas.php(592 B)
ðŸ“„ template-loader.php(2.94 KB)
ðŸ“„ template.php(22.77 KB)
ðŸ“ theme-compat
ðŸ“„ theme-i18n.json(1.12 KB)
ðŸ“„ theme-templates.php(5.38 KB)
ðŸ“„ theme.json(9.81 KB)
ðŸ“„ theme.php(126.88 KB)
ðŸ“„ update.php(33.86 KB)
ðŸ“„ user.php(165.74 KB)
ðŸ“„ vars.php(5.74 KB)
ðŸ“„ version.php(929 B)
ðŸ“ widgets
ðŸ“„ widgets.php(68.22 KB)
ðŸ“„ wlwmanifest.xml(1.02 KB)
ðŸ“„ wp-db.php(445 B)
ðŸ“„ wp-diff.php(647 B)

Editing: class-wp-block-parser.php

<?php
/**
 * Block Serialization Parser
 *
 * @package WordPress
 */

/**
 * Class WP_Block_Parser_Block
 *
 * Holds the block structure in memory
 *
 * @since 5.0.0
 */
class WP_Block_Parser_Block {
	/**
	 * Name of block
	 *
	 * @example "core/paragraph"
	 *
	 * @since 5.0.0
	 * @var string
	 */
	public $blockName;

/**
	 * Optional set of attributes from block comment delimiters
	 *
	 * @example null
	 * @example array( 'columns' => 3 )
	 *
	 * @since 5.0.0
	 * @var array|null
	 */
	public $attrs;

/**
	 * List of inner blocks (of this same class)
	 *
	 * @since 5.0.0
	 * @var WP_Block_Parser_Block[]
	 */
	public $innerBlocks;

/**
	 * Resultant HTML from inside block comment delimiters
	 * after removing inner blocks
	 *
	 * @example "...Just  testing..." -> "Just testing..."
	 *
	 * @since 5.0.0
	 * @var string
	 */
	public $innerHTML;

/**
	 * List of string fragments and null markers where inner blocks were found
	 *
	 * @example array(
	 *   'innerHTML'    => 'BeforeInnerAfter',
	 *   'innerBlocks'  => array( block, block ),
	 *   'innerContent' => array( 'Before', null, 'Inner', null, 'After' ),
	 * )
	 *
	 * @since 4.2.0
	 * @var array
	 */
	public $innerContent;

/**
	 * Constructor.
	 *
	 * Will populate object properties from the provided arguments.
	 *
	 * @since 5.0.0
	 *
	 * @param string $name         Name of block.
	 * @param array  $attrs        Optional set of attributes from block comment delimiters.
	 * @param array  $innerBlocks  List of inner blocks (of this same class).
	 * @param string $innerHTML    Resultant HTML from inside block comment delimiters after removing inner blocks.
	 * @param array  $innerContent List of string fragments and null markers where inner blocks were found.
	 */
	public function __construct( $name, $attrs, $innerBlocks, $innerHTML, $innerContent ) {
		$this->blockName    = $name;
		$this->attrs        = $attrs;
		$this->innerBlocks  = $innerBlocks;
		$this->innerHTML    = $innerHTML;
		$this->innerContent = $innerContent;
	}
}

/**
 * Class WP_Block_Parser_Frame
 *
 * Holds partial blocks in memory while parsing
 *
 * @internal
 * @since 5.0.0
 */
class WP_Block_Parser_Frame {
	/**
	 * Full or partial block
	 *
	 * @since 5.0.0
	 * @var WP_Block_Parser_Block
	 */
	public $block;

/**
	 * Byte offset into document for start of parse token
	 *
	 * @since 5.0.0
	 * @var int
	 */
	public $token_start;

/**
	 * Byte length of entire parse token string
	 *
	 * @since 5.0.0
	 * @var int
	 */
	public $token_length;

/**
	 * Byte offset into document for after parse token ends
	 * (used during reconstruction of stack into parse production)
	 *
	 * @since 5.0.0
	 * @var int
	 */
	public $prev_offset;

/**
	 * Byte offset into document where leading HTML before token starts
	 *
	 * @since 5.0.0
	 * @var int
	 */
	public $leading_html_start;

/**
	 * Constructor
	 *
	 * Will populate object properties from the provided arguments.
	 *
	 * @since 5.0.0
	 *
	 * @param WP_Block_Parser_Block $block              Full or partial block.
	 * @param int                   $token_start        Byte offset into document for start of parse token.
	 * @param int                   $token_length       Byte length of entire parse token string.
	 * @param int                   $prev_offset        Byte offset into document for after parse token ends.
	 * @param int                   $leading_html_start Byte offset into document where leading HTML before token starts.
	 */
	public function __construct( $block, $token_start, $token_length, $prev_offset = null, $leading_html_start = null ) {
		$this->block              = $block;
		$this->token_start        = $token_start;
		$this->token_length       = $token_length;
		$this->prev_offset        = isset( $prev_offset ) ? $prev_offset : $token_start + $token_length;
		$this->leading_html_start = $leading_html_start;
	}
}

/**
 * Class WP_Block_Parser
 *
 * Parses a document and constructs a list of parsed block objects
 *
 * @since 5.0.0
 * @since 4.0.0 returns arrays not objects, all attributes are arrays
 */
class WP_Block_Parser {
	/**
	 * Input document being parsed
	 *
	 * @example "Pre-text\nThis is inside a block!"
	 *
	 * @since 5.0.0
	 * @var string
	 */
	public $document;

/**
	 * Tracks parsing progress through document
	 *
	 * @since 5.0.0
	 * @var int
	 */
	public $offset;

/**
	 * List of parsed blocks
	 *
	 * @since 5.0.0
	 * @var WP_Block_Parser_Block[]
	 */
	public $output;

/**
	 * Stack of partially-parsed structures in memory during parse
	 *
	 * @since 5.0.0
	 * @var WP_Block_Parser_Frame[]
	 */
	public $stack;

/**
	 * Empty associative array, here due to PHP quirks
	 *
	 * @since 4.4.0
	 * @var array empty associative array
	 */
	public $empty_attrs;

/**
	 * Parses a document and returns a list of block structures
	 *
	 * When encountering an invalid parse will return a best-effort
	 * parse. In contrast to the specification parser this does not
	 * return an error on invalid inputs.
	 *
	 * @since 5.0.0
	 *
	 * @param string $document Input document being parsed.
	 * @return array[]
	 */
	public function parse( $document ) {
		$this->document    = $document;
		$this->offset      = 0;
		$this->output      = array();
		$this->stack       = array();
		$this->empty_attrs = json_decode( '{}', true );

while ( $this->proceed() ) {
			continue;
		}

return $this->output;
	}

/**
	 * Processes the next token from the input document
	 * and returns whether to proceed eating more tokens
	 *
	 * This is the "next step" function that essentially
	 * takes a token as its input and decides what to do
	 * with that token before descending deeper into a
	 * nested block tree or continuing along the document
	 * or breaking out of a level of nesting.
	 *
	 * @internal
	 * @since 5.0.0
	 * @return bool
	 */
	public function proceed() {
		$next_token = $this->next_token();
		list( $token_type, $block_name, $attrs, $start_offset, $token_length ) = $next_token;
		$stack_depth = count( $this->stack );

// we may have some HTML soup before the next block.
		$leading_html_start = $start_offset > $this->offset ? $this->offset : null;

switch ( $token_type ) {
			case 'no-more-tokens':
				// if not in a block then flush output.
				if ( 0 === $stack_depth ) {
					$this->add_freeform();
					return false;
				}

/*
				 * Otherwise we have a problem
				 * This is an error
				 *
				 * we have options
				 * - treat it all as freeform text
				 * - assume an implicit closer (easiest when not nesting)
				 */

// for the easy case we'll assume an implicit closer.
				if ( 1 === $stack_depth ) {
					$this->add_block_from_stack();
					return false;
				}

/*
				 * for the nested case where it's more difficult we'll
				 * have to assume that multiple closers are missing
				 * and so we'll collapse the whole stack piecewise
				 */
				while ( 0 < count( $this->stack ) ) {
					$this->add_block_from_stack();
				}
				return false;

case 'void-block':
				/*
				 * easy case is if we stumbled upon a void block
				 * in the top-level of the document
				 */
				if ( 0 === $stack_depth ) {
					if ( isset( $leading_html_start ) ) {
						$this->output[] = (array) $this->freeform(
							substr(
								$this->document,
								$leading_html_start,
								$start_offset - $leading_html_start
							)
						);
					}

$this->output[] = (array) new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() );
					$this->offset   = $start_offset + $token_length;
					return true;
				}

// otherwise we found an inner block.
				$this->add_inner_block(
					new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() ),
					$start_offset,
					$token_length
				);
				$this->offset = $start_offset + $token_length;
				return true;

case 'block-opener':
				// track all newly-opened blocks on the stack.
				array_push(
					$this->stack,
					new WP_Block_Parser_Frame(
						new WP_Block_Parser_Block( $block_name, $attrs, array(), '', array() ),
						$start_offset,
						$token_length,
						$start_offset + $token_length,
						$leading_html_start
					)
				);
				$this->offset = $start_offset + $token_length;
				return true;

case 'block-closer':
				/*
				 * if we're missing an opener we're in trouble
				 * This is an error
				 */
				if ( 0 === $stack_depth ) {
					/*
					 * we have options
					 * - assume an implicit opener
					 * - assume _this_ is the opener
					 * - give up and close out the document
					 */
					$this->add_freeform();
					return false;
				}

// if we're not nesting then this is easy - close the block.
				if ( 1 === $stack_depth ) {
					$this->add_block_from_stack( $start_offset );
					$this->offset = $start_offset + $token_length;
					return true;
				}

/*
				 * otherwise we're nested and we have to close out the current
				 * block and add it as a new innerBlock to the parent
				 */
				$stack_top                        = array_pop( $this->stack );
				$html                             = substr( $this->document, $stack_top->prev_offset, $start_offset - $stack_top->prev_offset );
				$stack_top->block->innerHTML     .= $html;
				$stack_top->block->innerContent[] = $html;
				$stack_top->prev_offset           = $start_offset + $token_length;

$this->add_inner_block(
					$stack_top->block,
					$stack_top->token_start,
					$stack_top->token_length,
					$start_offset + $token_length
				);
				$this->offset = $start_offset + $token_length;
				return true;

default:
				// This is an error.
				$this->add_freeform();
				return false;
		}
	}

/**
	 * Scans the document from where we last left off
	 * and finds the next valid token to parse if it exists
	 *
	 * Returns the type of the find: kind of find, block information, attributes
	 *
	 * @internal
	 * @since 5.0.0
	 * @since 4.6.1 fixed a bug in attribute parsing which caused catastrophic backtracking on invalid block comments
	 * @return array
	 */
	public function next_token() {
		$matches = null;

/*
		 * aye the magic
		 * we're using a single RegExp to tokenize the block comment delimiters
		 * we're also using a trick here because the only difference between a
		 * block opener and a block closer is the leading `/` before `wp:` (and
		 * a closer has no attributes). we can trap them both and process the
		 * match back in PHP to see which one it was.
		 */
		$has_match = preg_match(
			'/).)*+)?}\s+)?(?P<void>\/)?-->/s',
			$this->document,
			$matches,
			PREG_OFFSET_CAPTURE,
			$this->offset
		);

// if we get here we probably have catastrophic backtracking or out-of-memory in the PCRE.
		if ( false === $has_match ) {
			return array( 'no-more-tokens', null, null, null, null );
		}

// we have no more tokens.
		if ( 0 === $has_match ) {
			return array( 'no-more-tokens', null, null, null, null );
		}

list( $match, $started_at ) = $matches[0];

$length    = strlen( $match );
		$is_closer = isset( $matches['closer'] ) && -1 !== $matches['closer'][1];
		$is_void   = isset( $matches['void'] ) && -1 !== $matches['void'][1];
		$namespace = $matches['namespace'];
		$namespace = ( isset( $namespace ) && -1 !== $namespace[1] ) ? $namespace[0] : 'core/';
		$name      = $namespace . $matches['name'][0];
		$has_attrs = isset( $matches['attrs'] ) && -1 !== $matches['attrs'][1];

/*
		 * Fun fact! It's not trivial in PHP to create "an empty associative array" since all arrays
		 * are associative arrays. If we use `array()` we get a JSON `[]`
		 */
		$attrs = $has_attrs
			? json_decode( $matches['attrs'][0], /* as-associative */ true )
			: $this->empty_attrs;

/*
		 * This state isn't allowed
		 * This is an error
		 */
		if ( $is_closer && ( $is_void || $has_attrs ) ) {
			// we can ignore them since they don't hurt anything.
		}

if ( $is_void ) {
			return array( 'void-block', $name, $attrs, $started_at, $length );
		}

if ( $is_closer ) {
			return array( 'block-closer', $name, null, $started_at, $length );
		}

return array( 'block-opener', $name, $attrs, $started_at, $length );
	}

/**
	 * Returns a new block object for freeform HTML
	 *
	 * @internal
	 * @since 3.9.0
	 *
	 * @param string $innerHTML HTML content of block.
	 * @return WP_Block_Parser_Block freeform block object.
	 */
	public function freeform( $innerHTML ) {
		return new WP_Block_Parser_Block( null, $this->empty_attrs, array(), $innerHTML, array( $innerHTML ) );
	}

/**
	 * Pushes a length of text from the input document
	 * to the output list as a freeform block.
	 *
	 * @internal
	 * @since 5.0.0
	 * @param null $length how many bytes of document text to output.
	 */
	public function add_freeform( $length = null ) {
		$length = $length ? $length : strlen( $this->document ) - $this->offset;

if ( 0 === $length ) {
			return;
		}

$this->output[] = (array) $this->freeform( substr( $this->document, $this->offset, $length ) );
	}

/**
	 * Given a block structure from memory pushes
	 * a new block to the output list.
	 *
	 * @internal
	 * @since 5.0.0
	 * @param WP_Block_Parser_Block $block        The block to add to the output.
	 * @param int                   $token_start  Byte offset into the document where the first token for the block starts.
	 * @param int                   $token_length Byte length of entire block from start of opening token to end of closing token.
	 * @param int|null              $last_offset  Last byte offset into document if continuing form earlier output.
	 */
	public function add_inner_block( WP_Block_Parser_Block $block, $token_start, $token_length, $last_offset = null ) {
		$parent                       = $this->stack[ count( $this->stack ) - 1 ];
		$parent->block->innerBlocks[] = (array) $block;
		$html                         = substr( $this->document, $parent->prev_offset, $token_start - $parent->prev_offset );

if ( ! empty( $html ) ) {
			$parent->block->innerHTML     .= $html;
			$parent->block->innerContent[] = $html;
		}

$parent->block->innerContent[] = null;
		$parent->prev_offset           = $last_offset ? $last_offset : $token_start + $token_length;
	}

/**
	 * Pushes the top block from the parsing stack to the output list.
	 *
	 * @internal
	 * @since 5.0.0
	 * @param int|null $end_offset byte offset into document for where we should stop sending text output as HTML.
	 */
	public function add_block_from_stack( $end_offset = null ) {
		$stack_top   = array_pop( $this->stack );
		$prev_offset = $stack_top->prev_offset;

$html = isset( $end_offset )
			? substr( $this->document, $prev_offset, $end_offset - $prev_offset )
			: substr( $this->document, $prev_offset );

if ( ! empty( $html ) ) {
			$stack_top->block->innerHTML     .= $html;
			$stack_top->block->innerContent[] = $html;
		}

if ( isset( $stack_top->leading_html_start ) ) {
			$this->output[] = (array) $this->freeform(
				substr(
					$this->document,
					$stack_top->leading_html_start,
					$stack_top->token_start - $stack_top->leading_html_start
				)
			);
		}

$this->output[] = (array) $stack_top->block;
	}
}

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