private static function comment()
{
if (self::$css[0] !== '/' || self::$css[1] !== '*') {
return null;
}
$i = 2;
while (isset(self::$css[$i]) && (self::$css[$i] !== '*' || isset(self::$css[$i + 1]) && self::$css[$i + 1] !== '/')) {
++$i;
}
$i += 2;
if (!isset(self::$css[$i - 1])) {
throw new Exception('End of comment missing');
}
$str = substr(self::$css, 2, $i - 2 - 2);
self::$css = substr(self::$css, $i);
self::whitespace();
return array('type' => 'comment', 'comment' => $str);
}
