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<?php /** * HTML API: WP_HTML_Processor_State class * * @package WordPress * @subpackage HTML-API * @since 6.4.0 */ /** * Core class used by the HTML processor during HTML parsing * for managing the internal parsing state. * * This class is designed for internal use by the HTML processor. * * @since 6.4.0 * * @access private * * @see WP_HTML_Processor */ class WP_HTML_Processor_State { /* * Insertion mode constants. * * These constants exist and are named to make it easier to * discover and recognize the supported insertion modes in * the parser. * * Out of all the possible insertion modes, only those * supported by the parser are listed here. As support * is added to the parser for more modes, add them here * following the same naming and value pattern. * * @see https://html.spec.whatwg.org/#the-insertion-mode */ /** * Initial insertion mode for full HTML parser. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#the-initial-insertion-mode * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_INITIAL = 'insertion-mode-initial'; /** * Before HTML insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#the-before-html-insertion-mode * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_BEFORE_HTML = 'insertion-mode-before-html'; /** * Before head insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-beforehead * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_BEFORE_HEAD = 'insertion-mode-before-head'; /** * In head insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-inhead * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_HEAD = 'insertion-mode-in-head'; /** * In head noscript insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-inheadnoscript * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_HEAD_NOSCRIPT = 'insertion-mode-in-head-noscript'; /** * After head insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-afterhead * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_AFTER_HEAD = 'insertion-mode-after-head'; /** * In body insertion mode for full HTML parser. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#parsing-main-inbody * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_BODY = 'insertion-mode-in-body'; /** * In table insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-intable * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_TABLE = 'insertion-mode-in-table'; /** * In table text insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-intabletext * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_TABLE_TEXT = 'insertion-mode-in-table-text'; /** * In caption insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-incaption * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_CAPTION = 'insertion-mode-in-caption'; /** * In column group insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-incolumngroup * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_COLUMN_GROUP = 'insertion-mode-in-column-group'; /** * In table body insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-intablebody * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_TABLE_BODY = 'insertion-mode-in-table-body'; /** * In row insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-inrow * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_ROW = 'insertion-mode-in-row'; /** * In cell insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-incell * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_CELL = 'insertion-mode-in-cell'; /** * In select insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-inselect * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_SELECT = 'insertion-mode-in-select'; /** * In select in table insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-inselectintable * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_SELECT_IN_TABLE = 'insertion-mode-in-select-in-table'; /** * In template insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-intemplate * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_TEMPLATE = 'insertion-mode-in-template'; /** * After body insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-afterbody * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_AFTER_BODY = 'insertion-mode-after-body'; /** * In frameset insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-inframeset * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_IN_FRAMESET = 'insertion-mode-in-frameset'; /** * After frameset insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#parsing-main-afterframeset * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_AFTER_FRAMESET = 'insertion-mode-after-frameset'; /** * After after body insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#the-after-after-body-insertion-mode * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_AFTER_AFTER_BODY = 'insertion-mode-after-after-body'; /** * After after frameset insertion mode for full HTML parser. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#the-after-after-frameset-insertion-mode * @see WP_HTML_Processor_State::$insertion_mode * * @var string */ const INSERTION_MODE_AFTER_AFTER_FRAMESET = 'insertion-mode-after-after-frameset'; /** * The stack of template insertion modes. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/#the-insertion-mode:stack-of-template-insertion-modes * * @var array<string> */ public $stack_of_template_insertion_modes = array(); /** * Tracks open elements while scanning HTML. * * This property is initialized in the constructor and never null. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#stack-of-open-elements * * @var WP_HTML_Open_Elements */ public $stack_of_open_elements; /** * Tracks open formatting elements, used to handle mis-nested formatting element tags. * * This property is initialized in the constructor and never null. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#list-of-active-formatting-elements * * @var WP_HTML_Active_Formatting_Elements */ public $active_formatting_elements; /** * Refers to the currently-matched tag, if any. * * @since 6.4.0 * * @var WP_HTML_Token|null */ public $current_token = null; /** * Tree construction insertion mode. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#insertion-mode * * @var string */ public $insertion_mode = self::INSERTION_MODE_INITIAL; /** * Context node initializing fragment parser, if created as a fragment parser. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#concept-frag-parse-context * * @var [string, array]|null */ public $context_node = null; /** * The recognized encoding of the input byte stream. * * > The stream of code points that comprises the input to the tokenization * > stage will be initially seen by the user agent as a stream of bytes * > (typically coming over the network or from the local file system). * > The bytes encode the actual characters according to a particular character * > encoding, which the user agent uses to decode the bytes into characters. * * @since 6.7.0 * * @var string|null */ public $encoding = null; /** * The parser's confidence in the input encoding. * * > When the HTML parser is decoding an input byte stream, it uses a character * > encoding and a confidence. The confidence is either tentative, certain, or * > irrelevant. The encoding used, and whether the confidence in that encoding * > is tentative or certain, is used during the parsing to determine whether to * > change the encoding. If no encoding is necessary, e.g. because the parser is * > operating on a Unicode stream and doesn't have to use a character encoding * > at all, then the confidence is irrelevant. * * @since 6.7.0 * * @var string */ public $encoding_confidence = 'tentative'; /** * HEAD element pointer. * * @since 6.7.0 * * @see https://html.spec.whatwg.org/multipage/parsing.html#head-element-pointer * * @var WP_HTML_Token|null */ public $head_element = null; /** * FORM element pointer. * * > points to the last form element that was opened and whose end tag has * > not yet been seen. It is used to make form controls associate with * > forms in the face of dramatically bad markup, for historical reasons. * > It is ignored inside template elements. * * @todo This may be invalidated by a seek operation. * * @see https://html.spec.whatwg.org/#form-element-pointer * * @since 6.7.0 * * @var WP_HTML_Token|null */ public $form_element = null; /** * The frameset-ok flag indicates if a `FRAMESET` element is allowed in the current state. * * > The frameset-ok flag is set to "ok" when the parser is created. It is set to "not ok" after certain tokens are seen. * * @since 6.4.0 * * @see https://html.spec.whatwg.org/#frameset-ok-flag * * @var bool */ public $frameset_ok = true; /** * Constructor - creates a new and empty state value. * * @since 6.4.0 * * @see WP_HTML_Processor */ public function __construct() { $this->stack_of_open_elements = new WP_HTML_Open_Elements(); $this->active_formatting_elements = new WP_HTML_Active_Formatting_Elements(); } }