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Files:
admin-bar.php
atomlib.php
author-template.php
block-bindings.php
block-editor.php
block-patterns.php
block-template-utils.php
block-template.php
blocks.php
bookmark-template.php
bookmark.php
cache-compat.php
cache.php
canonical.php
capabilities.php
category-template.php
category.php
class-IXR.php
class-avif-info.php
class-feed.php
class-http.php
class-json.php
class-oembed.php
class-phpass.php
class-phpmailer.php
class-pop3.php
class-requests.php
class-simplepie.php
class-smtp.php
class-snoopy.php
class-walker-category-dropdown.php
class-walker-category.php
class-walker-comment.php
class-walker-nav-menu.php
class-walker-page-dropdown.php
class-walker-page.php
class-wp-admin-bar.php
class-wp-ajax-response.php
class-wp-application-passwords.php
class-wp-block-bindings-registry.php
class-wp-block-bindings-source.php
class-wp-block-editor-context.php
class-wp-block-list.php
class-wp-block-parser-block.php
class-wp-block-parser-frame.php
class-wp-block-parser.php
class-wp-block-pattern-categories-registry.php
class-wp-block-patterns-registry.php
class-wp-block-styles-registry.php
class-wp-block-supports.php
class-wp-block-template.php
class-wp-block-type-registry.php
class-wp-block-type.php
class-wp-block.php
class-wp-classic-to-block-menu-converter.php
class-wp-comment-query.php
class-wp-comment.php
class-wp-customize-control.php
class-wp-customize-manager.php
class-wp-customize-nav-menus.php
class-wp-customize-panel.php
class-wp-customize-section.php
class-wp-customize-setting.php
class-wp-customize-widgets.php
class-wp-date-query.php
class-wp-dependencies.php
class-wp-dependency.php
class-wp-duotone.php
class-wp-editor.php
class-wp-embed.php
class-wp-error.php
class-wp-fatal-error-handler.php
class-wp-feed-cache-transient.php
class-wp-feed-cache.php
class-wp-hook.php
class-wp-http-cookie.php
class-wp-http-curl.php
class-wp-http-encoding.php
class-wp-http-ixr-client.php
class-wp-http-proxy.php
class-wp-http-requests-hooks.php
class-wp-http-requests-response.php
class-wp-http-response.php
class-wp-http-streams.php
class-wp-http.php
class-wp-image-editor-gd.php
class-wp-image-editor-imagick.php
class-wp-image-editor.php
class-wp-list-util.php
class-wp-locale-switcher.php
class-wp-locale.php
class-wp-matchesmapregex.php
class-wp-meta-query.php
class-wp-metadata-lazyloader.php
class-wp-navigation-fallback.php
class-wp-network-query.php
class-wp-network.php
class-wp-object-cache.php
class-wp-oembed-controller.php
class-wp-oembed.php
class-wp-paused-extensions-storage.php
class-wp-plugin-dependencies.php
class-wp-post-type.php
class-wp-post.php
class-wp-query.php
class-wp-recovery-mode-cookie-service.php
class-wp-recovery-mode-email-service.php
class-wp-recovery-mode-key-service.php
class-wp-recovery-mode-link-service.php
class-wp-recovery-mode.php
class-wp-rewrite.php
class-wp-role.php
class-wp-roles.php
class-wp-script-modules.php
class-wp-scripts.php
class-wp-session-tokens.php
class-wp-simplepie-file.php
class-wp-simplepie-sanitize-kses.php
class-wp-site-query.php
class-wp-site.php
class-wp-styles.php
class-wp-tax-query.php
class-wp-taxonomy.php
class-wp-term-query.php
class-wp-term.php
class-wp-text-diff-renderer-inline.php
class-wp-text-diff-renderer-table.php
class-wp-textdomain-registry.php
class-wp-theme-json-data.php
class-wp-theme-json-resolver.php
class-wp-theme-json-schema.php
class-wp-theme-json.php
class-wp-theme.php
class-wp-token-map.php
class-wp-user-meta-session-tokens.php
class-wp-user-query.php
class-wp-user-request.php
class-wp-user.php
class-wp-walker.php
class-wp-widget-factory.php
class-wp-widget.php
class-wp-xmlrpc-server.php
class-wp.php
class-wpdb.php
class.wp-dependencies.php
class.wp-scripts.php
class.wp-styles.php
comment-template.php
comment.php
compat.php
cron.php
date.php
default-constants.php
default-filters.php
default-widgets.php
deprecated.php
embed-template.php
embed.php
error-protection.php
feed-atom-comments.php
feed-atom.php
feed-rdf.php
feed-rss.php
feed-rss2-comments.php
feed-rss2.php
feed.php
fonts.php
formatting.php
functions.php
functions.wp-scripts.php
functions.wp-styles.php
general-template.php
global-styles-and-settings.php
http.php
https-detection.php
https-migration.php
kses.php
l10n.php
link-template.php
load.php
locale.php
media-template.php
media.php
meta.php
ms-blogs.php
ms-default-constants.php
ms-default-filters.php
ms-deprecated.php
ms-files.php
ms-functions.php
ms-load.php
ms-network.php
ms-settings.php
ms-site.php
nav-menu-template.php
nav-menu.php
option.php
pluggable-deprecated.php
pluggable.php
plugin.php
post-formats.php
post-template.php
post-thumbnail-template.php
post.php
query.php
registration-functions.php
registration.php
rest-api.php
revision.php
rewrite.php
robots-template.php
rss-functions.php
rss.php
script-loader.php
script-modules.php
session.php
shortcodes.php
sitemaps.php
spl-autoload-compat.php
style-engine.php
taxonomy.php
template-canvas.php
template-loader.php
template.php
theme-previews.php
theme-templates.php
theme.php
update.php
user.php
vars.php
version.php
widgets.php
wp-db.php
wp-diff.php
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Edit File: class-wp-block-parser.php
<?php /** * Block Serialization Parser * * @package WordPress */ /** * 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\n<!-- wp:paragraph -->This is inside a block!<!-- /wp:paragraph -->" * * @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; /** * 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(); 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<closer>\/)?wp:(?P<namespace>[a-z][a-z0-9_-]*\/)?(?P<name>[a-z][a-z0-9_-]*)\s+(?P<attrs>{(?:(?:[^}]+|}+(?=})|(?!}\s+\/?-->).)*+)?}\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 ) : array(); /* * 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 $inner_html HTML content of block. * @return WP_Block_Parser_Block freeform block object. */ public function freeform( $inner_html ) { return new WP_Block_Parser_Block( null, array(), array(), $inner_html, array( $inner_html ) ); } /** * 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; } } /** * WP_Block_Parser_Block class. * * Required for backward compatibility in WordPress Core. */ require_once __DIR__ . '/class-wp-block-parser-block.php'; /** * WP_Block_Parser_Frame class. * * Required for backward compatibility in WordPress Core. */ require_once __DIR__ . '/class-wp-block-parser-frame.php';
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