mute/mute-interpreter/src/macros.rs

#[macro_export]
macro_rules! arg_count {
    ($expected:expr, $given:expr) => {
        if $expected != $given {
            Err(Error::MismatchedArgCount($expected, $given))?
        }
    };

    (modulo: $modulo:expr, $given:expr) => {
        if $given % $modulo != 0 {
            Err(Error::MismatchedArgCount(
                ($given / $modulo) * $modulo + $modulo,
                $given,
            ))?
        }
    };
}