Runs the adoption agency algorithm.

Description

See also

• https://html.spec.whatwg.org/#adoption-agency-algorithm

Source

	return true;

/*
 * > An end tag whose tag name is "html"
 */
case '-HTML':
	if ( ! $this->state->stack_of_open_elements->has_element_in_scope( 'BODY' ) ) {
		// Parse error: ignore the token.
		return $this->step();
	}

	/*
	 * > Otherwise, if there is a node in the stack of open elements that is not either a
	 * > dd element, a dt element, an li element, an optgroup element, an option element,
	 * > a p element, an rb element, an rp element, an rt element, an rtc element, a tbody
	 * > element, a td element, a tfoot element, a th element, a thread element, a tr
	 * > element, the body element, or the html element, then this is a parse error.
	 *
	 * There is nothing to do for this parse error, so don't check for it.
	 */

	$this->state->insertion_mode = WP_HTML_Processor_State::INSERTION_MODE_AFTER_BODY;
	return $this->step( self::REPROCESS_CURRENT_NODE );

/*
 * > A start tag whose tag name is one of: "address", "article", "aside",
 * > "blockquote", "center", "details", "dialog", "dir", "div", "dl",
 * > "fieldset", "figcaption", "figure", "footer", "header", "hgroup",
 * > "main", "menu", "nav", "ol", "p", "search", "section", "summary", "ul"
 */
case '+ADDRESS':
case '+ARTICLE':
case '+ASIDE':
case '+BLOCKQUOTE':
case '+CENTER':
case '+DETAILS':
case '+DIALOG':
case '+DIR':
case '+DIV':
case '+DL':
case '+FIELDSET':
case '+FIGCAPTION':
case '+FIGURE':
case '+FOOTER':
case '+HEADER':
case '+HGROUP':
case '+MAIN':
case '+MENU':
case '+NAV':
case '+OL':
case '+P':
case '+SEARCH':
case '+SECTION':
case '+SUMMARY':
case '+UL':
	if ( $this->state->stack_of_open_elements->has_p_in_button_scope() ) {
		$this->close_a_p_element();
	}

	$this->insert_html_element( $this->state->current_token );
	return true;

/*
 * > A start tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"
 */
case '+H1':
case '+H2':
case '+H3':
case '+H4':
case '+H5':
case '+H6':
	if ( $this->state->stack_of_open_elements->has_p_in_button_scope() ) {
		$this->close_a_p_element();
	}

	if (
		in_array(
			$this->state->stack_of_open_elements->current_node()->node_name,
			array( 'H1', 'H2', 'H3', 'H4', 'H5', 'H6' ),
			true
		)
	) {
		// @todo Indicate a parse error once it's possible.
		$this->state->stack_of_open_elements->pop();
	}

	$this->insert_html_element( $this->state->current_token );
	return true;

/*
 * > A start tag whose tag name is one of: "pre", "listing"
 */
case '+PRE':
case '+LISTING':
	if ( $this->state->stack_of_open_elements->has_p_in_button_scope() ) {
		$this->close_a_p_element();
	}

	/*
	 * > If the next token is a U+000A LINE FEED (LF) character token,
	 * > then ignore that token and move on to the next one. (Newlines

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