doCompile example

            // on empty template just return header             if ($_content == '') {
                if ($this->suppressTemplatePropertyHeader) {
                    $code = '';
                } else {
                    $code = $template_header . $template->createTemplateCodeFrame();
                }
                return $code;
            }
            // call compiler             $_compiled_code = $this->doCompile($_content);
        } while ($this->abort_and_recompile);
        $this->template->source->filepath = $saved_filepath;
        // free memory         unset($this->parser->root_buffer, $this->parser->current_buffer, $this->parser, $this->lex, $this->template);
        self::$_tag_objects = array();
        // return compiled code to template object         $merged_code = '';
        if (!$this->suppressMergedTemplates && !empty($this->merged_templates)) {
            foreach ($this->merged_templates as $code) {
                $merged_code .= $code;
            }