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1 <?php 2 /** 3 * HTML API: WP_HTML_Token class 4 * 5 * @package WordPress 6 * @subpackage HTML-API 7 * @since 6.4.0 8 */ 9 10 /** 11 * Core class used by the HTML processor during HTML parsing 12 * for referring to tokens in the input HTML string. 13 * 14 * This class is designed for internal use by the HTML processor. 15 * 16 * @since 6.4.0 17 * 18 * @access private 19 * 20 * @see WP_HTML_Processor 21 */ 22 class WP_HTML_Token { 23 /** 24 * Name of bookmark corresponding to source of token in input HTML string. 25 * 26 * Having a bookmark name does not imply that the token still exists. It 27 * may be that the source token and underlying bookmark was wiped out by 28 * some modification to the source HTML. 29 * 30 * @since 6.4.0 31 * 32 * @var string 33 */ 34 public $bookmark_name = null; 35 36 /** 37 * Name of node; lowercase names such as "marker" are not HTML elements. 38 * 39 * For HTML elements/tags this value should come from WP_HTML_Processor::get_tag(). 40 * 41 * @since 6.4.0 42 * 43 * @see WP_HTML_Processor::get_tag() 44 * 45 * @var string 46 */ 47 public $node_name = null; 48 49 /** 50 * Whether node contains the self-closing flag. 51 * 52 * A node may have a self-closing flag when it shouldn't. This value 53 * only reports if the flag is present in the original HTML. 54 * 55 * @since 6.4.0 56 * 57 * @see https://html.spec.whatwg.org/#self-closing-flag 58 * 59 * @var bool 60 */ 61 public $has_self_closing_flag = false; 62 63 /** 64 * Called when token is garbage-collected or otherwise destroyed. 65 * 66 * @var callable|null 67 */ 68 public $on_destroy = null; 69 70 /** 71 * Constructor - creates a reference to a token in some external HTML string. 72 * 73 * @since 6.4.0 74 * 75 * @param string $bookmark_name Name of bookmark corresponding to location in HTML where token is found. 76 * @param string $node_name Name of node token represents; if uppercase, an HTML element; if lowercase, a special value like "marker". 77 * @param bool $has_self_closing_flag Whether the source token contains the self-closing flag, regardless of whether it's valid. 78 * @param callable $on_destroy Function to call when destroying token, useful for releasing the bookmark. 79 */ 80 public function __construct( $bookmark_name, $node_name, $has_self_closing_flag, $on_destroy = null ) { 81 $this->bookmark_name = $bookmark_name; 82 $this->node_name = $node_name; 83 $this->has_self_closing_flag = $has_self_closing_flag; 84 $this->on_destroy = $on_destroy; 85 } 86 87 /** 88 * Destructor. 89 * 90 * @since 6.4.0 91 */ 92 public function __destruct() { 93 if ( is_callable( $this->on_destroy ) ) { 94 call_user_func( $this->on_destroy, $this->bookmark_name ); 95 } 96 } 97 98 /** 99 * Wakeup magic method. 100 * 101 * @since 6.4.2 102 */ 103 public function __wakeup() { 104 throw new \LogicException( __CLASS__ . ' should never be unserialized' ); 105 } 106 }
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