Method _parseTemplate

/**
 * Parse a document template
 *
 * @return  HtmlDocument  instance of $this to allow chaining
 *
 * @since   1.7.0
 */
protected function _parseTemplate()
{
    $matches = array();
    if (preg_match_all('#<jdoc:include\\ type="([^"]+)"(.*)\\/>#iU', $this->_template, $matches)) {
        $messages = [];
        $template_tags_first = [];
        $template_tags_last = [];
        // Step through the jdocs in reverse order.
        for ($i = \count($matches[0]) - 1; $i >= 0; $i--) {
            $type = $matches[1][$i];
            $attribs = empty($matches[2][$i]) ? array() : Utility::parseAttributes($matches[2][$i]);
            $name = $attribs['name'] ?? null;
            // Separate buffers to be executed first and last
            if ($type === 'module' || $type === 'modules') {
                $template_tags_first[$matches[0][$i]] = ['type' => $type, 'name' => $name, 'attribs' => $attribs];
            } elseif ($type === 'message') {
                $messages = [$matches[0][$i] => ['type' => $type, 'name' => $name, 'attribs' => $attribs]];
            } else {
                $template_tags_last[$matches[0][$i]] = ['type' => $type, 'name' => $name, 'attribs' => $attribs];
            }
        }
        $this->_template_tags = $template_tags_first + $messages + array_reverse($template_tags_last);
    }
    return $this;
}