macro_rules! extend {
    ($(#[$outer:meta])* $vis:vis $name:ident extends $root:expr; { $( $inst:pat => $func:expr ),+ $(,)? }) => { ... };
    ($(#[$outer:meta])* $vis:vis $name:ident extends $root:expr, $using:item { $( $inst:pat => $func:expr ),+ $(,)? }) => { ... };
    ($(#[$outer:meta])* $name:ident extends $root:expr; { $( $inst:pat => $func:expr ),+ $(,)? }) => { ... };
    ($(#[$outer:meta])* $name:ident extends $root:expr, $using:item { $( $inst:pat => $func:expr ),+ $(,)? }) => { ... };
}
Expand description

Macro to extend any base instruction set