Macro make_add_macro 

macro_rules! make_add_macro {
    (
        ($d:tt)
        name: $name_:ident;
        type: $type_:path;
        body: {$($body:item)+}
    ) => { ... };
    (
        name: $name:ident;
        type: $type:path;
        body: {$($body:item)+}
    ) => { ... };
}