Struct CountryCode 

pub struct CountryCode { /* private fields */ }

A CAPCO country / country-group code, 2–16 ASCII bytes.

Covers every entry in the CVE country code list:

• 1× 2-char (EU)
• 280× 3-char trigraphs (USA, GBR, AUS, …)
• 58× 4-char tetragraphs / country-group codes (FVEY, ACGU, NATO, RSMA, …)
• 1× 15-char (AUSTRALIA_GROUP)

The inner bytes are private; construction goes through CountryCode::try_new which enforces the CAPCO byte-set invariant (ASCII uppercase letters, ASCII digits, underscore — covers AX2, AX3, AUSTRALIA_GROUP, and the standard alpha trigraphs/ tetragraphs) so that CountryCode::as_str can return a &str infallibly without panicking at runtime.

Copy is preserved so the type composes in iterator chains and BTreeSet-based intersection without manual .clone() calls. The fixed-array form keeps each CountryCode entry inline in IsmAttributes::rel_to (Box<[CountryCode]>) on the parsing hot path — no per-code heap allocation.

Implementations

impl CountryCode

pub const USA: CountryCode

The always-valid USA country code constant.

Constructed via CountryCode::try_new in const context; the expect is statically unreachable for b"USA" (3 bytes, all ASCII uppercase) and exists only to satisfy const unwrap.

pub const fn try_new(bytes: &[u8]) -> Option<CountryCode>

Attempt to construct a country code from a byte slice.

Returns None if bytes:

• is shorter than 2 bytes (EU is the shortest CVE entry) or longer than [COUNTRY_CODE_CAPACITY] bytes
• contains any byte outside the CAPCO country-code byte set (ASCII uppercase letter, ASCII digit, underscore)

Membership in the CVE recognition set is a separate check — see [crate::CapcoTokenSet::is_trigraph] (the trait method covers any known country code, not only 3-char trigraphs).

pub fn as_str(&self) -> &str

Return the country code as a string slice.

Infallible because construction via CountryCode::try_new (or CountryCode::USA) guarantees every active byte is in the CAPCO byte set, which is a subset of ASCII / valid UTF-8.

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

Active byte slice (excludes the zero padding).

pub const fn len(&self) -> usize

Number of active bytes, 2..=COUNTRY_CODE_CAPACITY.

pub const fn is_empty(&self) -> bool

Always false — CountryCode invariants forbid empty codes. Provided for clippy-len_without_is_empty compliance.

Trait Implementations

impl Clone for CountryCode

fn clone(&self) -> CountryCode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CountryCode

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

Formats the value using the given formatter.

impl Display for CountryCode

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

Formats the value using the given formatter.

impl Hash for CountryCode

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

where __H: Hasher,

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 Ord for CountryCode

fn cmp(&self, other: &CountryCode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for CountryCode

fn eq(&self, other: &CountryCode) -> 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 PartialOrd for CountryCode

fn partial_cmp(&self, other: &CountryCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for CountryCode

impl Eq for CountryCode

impl StructuralPartialEq for CountryCode