protected function catchAsStringUntilSemicolon(array $tokens, $pos) {
        $t = count($tokens);
        $catched = null;
        for ($i = $pos; $i < $t; $i++) {
            if ($tokens[$i] == ';')
                return $catched;
            else if ($tokens[$i] == '\\')
                $catched .= '\\';
            else if (is_array($tokens[$i])) {
                $catched .= $tokens[$i][1];
            }
        }
        return $catched;
    }