Macro asn1_cereal::asn1_spec_tag

macro_rules! asn1_spec_tag {
    ({ $count:ident }) => { ... };
    ({ $count:ident } []) => { ... };
    ({ $count:ident } [$($args:tt)*]) => { ... };
    ([$tagnum:expr]) => { ... };
    ([UNIVERSAL $tagnum:expr]) => { ... };
    ([CONTEXT $tagnum:expr]) => { ... };
    ([APPLICATION $tagnum:expr]) => { ... };
    ([PRIVATE $tagnum:expr]) => { ... };
}

This macro parses an ASN.1 tag specification, and returns the appropriate Tag.