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<?php
/**
* HTML API: WP_HTML_Unsupported_Exception class
*
* @package WordPress
* @subpackage HTML-API
* @since 6.4.0
*/
/**
* Core class used by the HTML processor during HTML parsing
* for indicating that a given operation is unsupported.
*
* This class is designed for internal use by the HTML processor.
*
* The HTML API aims to operate in compliance with the HTML5
* specification, but does not implement the full specification.
* In cases where it lacks support it should not cause breakage
* or unexpected behavior. In the cases where it recognizes that
* it cannot proceed, this class is used to abort from any
* operation and signify that the given HTML cannot be processed.
*
* @since 6.4.0
* @since 6.7.0 Gained contextual information for use in debugging parse failures.
*
* @access private
*
* @see WP_HTML_Processor
*/
class WP_HTML_Unsupported_Exception extends Exception {
/**
* Name of the matched token when the exception was raised,
* if matched on a token.
*
* This does not imply that the token itself was unsupported, but it
* may have been the case that the token triggered part of the HTML
* parsing that isn't supported, such as the adoption agency algorithm.
*
* @since 6.7.0
*
* @var string
*/
public $token_name;
/**
* Number of bytes into the input HTML document where the parser was
* parsing when the exception was raised.
*
* Use this to reconstruct context for the failure.
*
* @since 6.7.0
*
* @var int
*/
public $token_at;
/**
* Full raw text of the matched token when the exception was raised,
* if matched on a token.
*
* Whereas the `$token_name` will be normalized, this contains the full
* raw text of the token, including original casing, duplicated attributes,
* and other syntactic variations that are normally abstracted in the HTML API.
*
* @since 6.7.0
*
* @var string
*/
public $token;
/**
* Stack of open elements when the exception was raised.
*
* Use this to trace the parsing circumstances which led to the exception.
*
* @since 6.7.0
*
* @var string[]
*/
public $stack_of_open_elements = array();
/**
* List of active formatting elements when the exception was raised.
*
* Use this to trace the parsing circumstances which led to the exception.
*
* @since 6.7.0
*
* @var string[]
*/
public $active_formatting_elements = array();
/**
* Constructor function.
*
* @since 6.7.0
*
* @param string $message Brief message explaining what is unsupported, the reason this exception was raised.
* @param string $token_name Normalized name of matched token when this exception was raised.
* @param int $token_at Number of bytes into source HTML document where matched token starts.
* @param string $token Full raw text of matched token when this exception was raised.
* @param string[] $stack_of_open_elements Stack of open elements when this exception was raised.
* @param string[] $active_formatting_elements List of active formatting elements when this exception was raised.
*/
public function __construct( string $message, string $token_name, int $token_at, string $token, array $stack_of_open_elements, array $active_formatting_elements ) {
parent::__construct( $message );
$this->token_name = $token_name;
$this->token_at = $token_at;
$this->token = $token;
$this->stack_of_open_elements = $stack_of_open_elements;
$this->active_formatting_elements = $active_formatting_elements;
}
}
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