Struct Tag 

pub struct Tag(/* private fields */);

4-byte type tag. Field is private to enforce validated construction via try_new (alphabet-checked) or from_raw_bytes (tooling-only, unvalidated).

Implementations

impl Tag

pub const ENTR: Tag

The v0.1 emit-tag for BIP-39 entropy.

pub fn from_raw_bytes(b: [u8; 4]) -> Self

Construct a Tag from raw 4-byte input WITHOUT alphabet validation. Reserved for tooling (e.g., inspect()) that needs to surface whatever bytes were observed on the wire, including alphabet violators. Encoder

• decoder paths MUST go through try_new instead.

pub fn try_new(s: &str) -> Result<Self>

Construct a Tag from a 4-character string slice. Returns Error::TagInvalidAlphabet if any character is outside the codex32 alphabet.

pub fn as_bytes(&self) -> &[u8; 4]

Borrow the underlying 4 bytes.

pub fn as_str(&self) -> &str

View the tag as a string slice. Always succeeds for try_new-constructed tags (codex32 alphabet is ASCII); for from_raw_bytes-constructed tags containing non-UTF-8 bytes, returns “”.

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Tag

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Tag

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for Tag

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Tag

fn eq(&self, other: &Tag) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Tag

impl Eq for Tag

impl StructuralPartialEq for Tag