WP_HTML_Tag_Processor::after_tag()

Source

private function skip_whitespace(): void {
	$this->bytes_already_parsed += strspn( $this->html, " \t\f\r\n", $this->bytes_already_parsed );
}

/**
 * Applies attribute updates and cleans up once a tag is fully parsed.
 *
 * @since 6.2.0
 * @ignore
 */
private function after_tag(): void {
	/*
	 * There could be lexical updates enqueued for an attribute that
	 * also exists on the next tag. In order to avoid conflating the
	 * attributes across the two tags, lexical updates with names
	 * need to be flushed to raw lexical updates.
	 */
	$this->class_name_updates_to_attributes_updates();

	/*
	 * Purge updates if there are too many. The actual count isn't
	 * scientific, but a few values from 100 to a few thousand were
	 * tests to find a practically-useful limit.
	 *
	 * If the update queue grows too big, then the Tag Processor
	 * will spend more time iterating through them and lose the
	 * efficiency gains of deferring applying them.
	 */
	if ( 1000 < count( $this->lexical_updates ) ) {
		$this->get_updated_html();
	}

	foreach ( $this->lexical_updates as $name => $update ) {
		/*
		 * Any updates appearing after the cursor should be applied
		 * before proceeding, otherwise they may be overlooked.
		 */
		if ( $update->start >= $this->bytes_already_parsed ) {
			$this->get_updated_html();
			break;
		}

		if ( is_int( $name ) ) {
			continue;
		}

		$this->lexical_updates[] = $update;
		unset( $this->lexical_updates[ $name ] );
	}

	$this->token_starts_at          = null;
	$this->token_length             = null;

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