DB\Jig\Mapper::token PHP Method

    function token($str)
    {
        $self = $this;
        $str = preg_replace_callback('/(?<!\\w)@(\\w(?:[\\w\\.\\[\\]])*)/', function ($token) use($self) {
            // Convert from JS dot notation to PHP array notation
            return '$' . preg_replace_callback('/(\\.\\w+)|\\[((?:[^\\[\\]]*|(?R))*)\\]/', function ($expr) use($self) {
                $fw = \Base::instance();
                return '[' . ($expr[1] ? $fw->stringify(substr($expr[1], 1)) : (preg_match('/^\\w+/', $mix = $self->token($expr[2])) ? $fw->stringify($mix) : $mix)) . ']';
            }, $token[1]);
        }, $str);
        return trim($str);
    }