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1ffe7a456c
As part of work to add more spec support to the HTML API, this patch adds support for SVG and MathML elements, or more generally, "foreign content." The rules in foreign content are a mix of XML and HTML parsing rules and introduce additional complexity into the processor, but is important in order to avoid getting lost when inside these elements. Developed in https://github.com/wordpress/wordpress-develop/pull/6006 Discussed in https://core.trac.wordpress.org/ticket/61576 Props: dmsnell, jonsurrell, westonruter. See #61576. Built from https://develop.svn.wordpress.org/trunk@58867 git-svn-id: http://core.svn.wordpress.org/trunk@58263 1a063a9b-81f0-0310-95a4-ce76da25c4cd
127 lines
3.3 KiB
PHP
127 lines
3.3 KiB
PHP
<?php
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/**
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* HTML API: WP_HTML_Token class
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*
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* @package WordPress
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* @subpackage HTML-API
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* @since 6.4.0
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*/
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/**
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* Core class used by the HTML processor during HTML parsing
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* for referring to tokens in the input HTML string.
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*
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* This class is designed for internal use by the HTML processor.
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*
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* @since 6.4.0
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*
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* @access private
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*
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* @see WP_HTML_Processor
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*/
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class WP_HTML_Token {
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/**
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* Name of bookmark corresponding to source of token in input HTML string.
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*
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* Having a bookmark name does not imply that the token still exists. It
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* may be that the source token and underlying bookmark was wiped out by
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* some modification to the source HTML.
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*
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* @since 6.4.0
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*
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* @var string
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*/
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public $bookmark_name = null;
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/**
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* Name of node; lowercase names such as "marker" are not HTML elements.
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*
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* For HTML elements/tags this value should come from WP_HTML_Processor::get_tag().
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*
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* @since 6.4.0
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*
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* @see WP_HTML_Processor::get_tag()
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*
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* @var string
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*/
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public $node_name = null;
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/**
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* Whether node contains the self-closing flag.
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*
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* A node may have a self-closing flag when it shouldn't. This value
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* only reports if the flag is present in the original HTML.
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*
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* @since 6.4.0
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*
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* @see https://html.spec.whatwg.org/#self-closing-flag
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*
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* @var bool
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*/
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public $has_self_closing_flag = false;
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/**
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* Indicates if the element is an HTML element or if it's inside foreign content.
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*
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* @since 6.7.0
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*
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* @var string 'html', 'svg', or 'math'.
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*/
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public $namespace = 'html';
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/**
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* Indicates which kind of integration point the element is, if any.
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*
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* @since 6.7.0
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*
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* @var string|null 'math', 'html', or null if not an integration point.
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*/
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public $integration_node_type = null;
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/**
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* Called when token is garbage-collected or otherwise destroyed.
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*
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* @var callable|null
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*/
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public $on_destroy = null;
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/**
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* Constructor - creates a reference to a token in some external HTML string.
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*
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* @since 6.4.0
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*
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* @param string|null $bookmark_name Name of bookmark corresponding to location in HTML where token is found,
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* or `null` for markers and nodes without a bookmark.
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* @param string $node_name Name of node token represents; if uppercase, an HTML element; if lowercase, a special value like "marker".
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* @param bool $has_self_closing_flag Whether the source token contains the self-closing flag, regardless of whether it's valid.
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* @param callable|null $on_destroy Optional. Function to call when destroying token, useful for releasing the bookmark.
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*/
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public function __construct( ?string $bookmark_name, string $node_name, bool $has_self_closing_flag, ?callable $on_destroy = null ) {
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$this->bookmark_name = $bookmark_name;
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$this->namespace = 'html';
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$this->node_name = $node_name;
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$this->has_self_closing_flag = $has_self_closing_flag;
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$this->on_destroy = $on_destroy;
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}
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/**
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* Destructor.
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*
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* @since 6.4.0
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*/
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public function __destruct() {
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if ( is_callable( $this->on_destroy ) ) {
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call_user_func( $this->on_destroy, $this->bookmark_name );
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}
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}
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/**
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* Wakeup magic method.
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*
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* @since 6.4.2
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*/
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public function __wakeup() {
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throw new \LogicException( __CLASS__ . ' should never be unserialized' );
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}
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}
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