Macro tpm_bitflags 

macro_rules! tpm_bitflags {
    (
        $(#[$outer:meta])*
        $vis:vis struct $name:ident($repr:ty) {
            $(
                $(#[$inner:meta])*
                const $field:ident = $value:expr, $string_name:literal;
            )*
        }
    ) => { ... };
}