Macro lut::accessor_all

macro_rules! accessor_all {
    (pub $name:ident = $($subname:ident)&+) => { ... };
    (pub($($vis:tt)*) $name:ident = $($subname:ident)&+) => { ... };
    ($name:ident = $($subname:ident)&+) => { ... };
    (@IMPL ($($vis:tt)*) $name:ident = $($subname:ident)&+) => { ... };
}