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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