Macro euphrates::euphrates_process_instructions

macro_rules! euphrates_process_instructions {
    (@ $macro_name: ident, $d: ident, $e: ident, $n: ident, $nn: ident,
        $(
            [
                $(
                    $content: tt
                )*
            ]
        )*
    ) => { ... };
    ($macro_name: ident, $d: ident, $e: ident, $n: ident, $nn: ident) => { ... };
}