org\parser\driver\Markdown::doLists PHP Метод

    protected function doLists($text)
    {
        #
        # Form HTML ordered (numbered) and unordered (bulleted) lists.
        #
        $less_than_tab = $this->tab_width - 1;
        # Re-usable patterns to match list item bullets and number markers:
        $marker_ul_re = '[*+-]';
        $marker_ol_re = '\\d+[\\.]';
        $marker_any_re = "(?:{$marker_ul_re}|{$marker_ol_re})";
        $markers_relist = array($marker_ul_re => $marker_ol_re, $marker_ol_re => $marker_ul_re);
        foreach ($markers_relist as $marker_re => $other_marker_re) {
            # Re-usable pattern to match any entirel ul or ol list:
            $whole_list_re = '
				(								# $1 = whole list
				  (								# $2
					([ ]{0,' . $less_than_tab . '})	# $3 = number of spaces
					(' . $marker_re . ')			# $4 = first list item marker
					[ ]+
				  )
				  (?s:.+?)
				  (								# $5
					  \\z
					|
					  \\n{2,}
					  (?=\\S)
					  (?!						# Negative lookahead for another list item marker
						[ ]*
						' . $marker_re . '[ ]+
					  )
					|
					  (?=						# Lookahead for another kind of list
					    \\n
						\\3						# Must have the same indentation
						' . $other_marker_re . '[ ]+
					  )
				  )
				)
			';
            // mx
            # We use a different prefix before nested lists than top-level lists.
            # See extended comment in _ProcessListItems().
            if ($this->list_level) {
                $text = preg_replace_callback('{
						^
						' . $whole_list_re . '
					}mx', array(&$this, '_doLists_callback'), $text);
            } else {
                $text = preg_replace_callback('{
						(?:(?<=\\n)\\n|\\A\\n?) # Must eat the newline
						' . $whole_list_re . '
					}mx', array(&$this, '_doLists_callback'), $text);
            }
        }
        return $text;
    }