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e1c3eab4ce
As part of work to add more spec support to the HTML API, this patch adds stubs for all of the remaining parser insertion modes in the HTML Processor. These modes are not all supported yet, but they will be necessary to continue adding support for other tags and markup. Developed in https://github.com/WordPress/wordpress-develop/pull/6973 Discussed in https://core.trac.wordpress.org/ticket/61576 Props dmsnell, jonsurrell. See #61576. Built from https://develop.svn.wordpress.org/trunk@58679 git-svn-id: http://core.svn.wordpress.org/trunk@58081 1a063a9b-81f0-0310-95a4-ce76da25c4cd
418 lines
9.7 KiB
PHP
418 lines
9.7 KiB
PHP
<?php
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/**
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* HTML API: WP_HTML_Processor_State 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 managing the internal parsing state.
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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_Processor_State {
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/*
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* Insertion mode constants.
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*
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* These constants exist and are named to make it easier to
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* discover and recognize the supported insertion modes in
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* the parser.
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*
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* Out of all the possible insertion modes, only those
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* supported by the parser are listed here. As support
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* is added to the parser for more modes, add them here
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* following the same naming and value pattern.
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*
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* @see https://html.spec.whatwg.org/#the-insertion-mode
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*/
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/**
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* Initial insertion mode for full HTML parser.
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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/#the-initial-insertion-mode
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_INITIAL = 'insertion-mode-initial';
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/**
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* Before HTML insertion mode for full HTML parser.
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*
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* @since 6.4.0
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*
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* @see https://html.spec.whatwg.org/#the-before-html-insertion-mode
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_BEFORE_HTML = 'insertion-mode-before-html';
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/**
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* Before head insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-beforehead
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_BEFORE_HEAD = 'insertion-mode-before-head';
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/**
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* In head insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inhead
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_HEAD = 'insertion-mode-in-head';
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/**
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* In head noscript insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inheadnoscript
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_HEAD_NOSCRIPT = 'insertion-mode-in-head-noscript';
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/**
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* After head insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-afterhead
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_AFTER_HEAD = 'insertion-mode-after-head';
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/**
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* In body insertion mode for full HTML parser.
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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/#parsing-main-inbody
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_BODY = 'insertion-mode-in-body';
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/**
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* In table insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-intable
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_TABLE = 'insertion-mode-in-table';
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/**
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* In table text insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-intabletext
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_TABLE_TEXT = 'insertion-mode-in-table-text';
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/**
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* In caption insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-incaption
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_CAPTION = 'insertion-mode-in-caption';
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/**
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* In column group insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-incolumngroup
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_COLUMN_GROUP = 'insertion-mode-in-column-group';
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/**
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* In table body insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-intablebody
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_TABLE_BODY = 'insertion-mode-in-table-body';
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/**
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* In row insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inrow
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_ROW = 'insertion-mode-in-row';
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/**
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* In cell insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-incell
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_CELL = 'insertion-mode-in-cell';
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/**
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* In select insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inselect
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_SELECT = 'insertion-mode-in-select';
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/**
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* In select in table insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inselectintable
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_SELECT_IN_TABLE = 'insertion-mode-in-select-in-table';
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/**
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* In template insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-intemplate
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_TEMPLATE = 'insertion-mode-in-template';
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/**
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* After body insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-afterbody
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_AFTER_BODY = 'insertion-mode-after-body';
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/**
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* In frameset insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inframeset
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_FRAMESET = 'insertion-mode-in-frameset';
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/**
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* After frameset insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-afterframeset
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_AFTER_FRAMESET = 'insertion-mode-after-frameset';
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/**
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* After after body insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#the-after-after-body-insertion-mode
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_AFTER_AFTER_BODY = 'insertion-mode-after-after-body';
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/**
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* After after frameset insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#the-after-after-frameset-insertion-mode
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_AFTER_AFTER_FRAMESET = 'insertion-mode-after-after-frameset';
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/**
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* In foreign content insertion mode for full HTML parser.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#parsing-main-inforeign
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* @see WP_HTML_Processor_State::$insertion_mode
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*
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* @var string
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*/
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const INSERTION_MODE_IN_FOREIGN_CONTENT = 'insertion-mode-in-foreign-content';
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/**
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* The stack of template insertion modes.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/#the-insertion-mode:stack-of-template-insertion-modes
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*
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* @var array<string>
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*/
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public $stack_of_template_insertion_modes = array();
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/**
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* Tracks open elements while scanning HTML.
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*
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* This property is initialized in the constructor and never null.
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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/#stack-of-open-elements
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*
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* @var WP_HTML_Open_Elements
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*/
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public $stack_of_open_elements = null;
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/**
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* Tracks open formatting elements, used to handle mis-nested formatting element tags.
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*
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* This property is initialized in the constructor and never null.
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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/#list-of-active-formatting-elements
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*
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* @var WP_HTML_Active_Formatting_Elements
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*/
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public $active_formatting_elements = null;
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/**
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* Refers to the currently-matched tag, if any.
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*
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* @since 6.4.0
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*
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* @var WP_HTML_Token|null
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*/
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public $current_token = null;
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/**
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* Tree construction insertion mode.
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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/#insertion-mode
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*
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* @var string
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*/
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public $insertion_mode = self::INSERTION_MODE_INITIAL;
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/**
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* Context node initializing fragment parser, if created as a fragment parser.
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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/#concept-frag-parse-context
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*
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* @var [string, array]|null
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*/
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public $context_node = null;
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/**
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* HEAD element pointer.
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*
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* @since 6.7.0
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*
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* @see https://html.spec.whatwg.org/multipage/parsing.html#head-element-pointer
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*
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* @var WP_HTML_Token|null
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*/
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public $head_element = null;
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/**
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* The frameset-ok flag indicates if a `FRAMESET` element is allowed in the current state.
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*
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* > The frameset-ok flag is set to "ok" when the parser is created. It is set to "not ok" after certain tokens are seen.
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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/#frameset-ok-flag
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*
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* @var bool
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*/
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public $frameset_ok = true;
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/**
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* Constructor - creates a new and empty state value.
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*
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* @since 6.4.0
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*
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* @see WP_HTML_Processor
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*/
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public function __construct() {
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$this->stack_of_open_elements = new WP_HTML_Open_Elements();
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$this->active_formatting_elements = new WP_HTML_Active_Formatting_Elements();
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}
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}
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