Struct GffLabel 

pub struct GffLabel { /* private fields */ }

Canonicalized GFF field label.

GFF labels are identifiers with a maximum length of 16 characters. This type stores the exact casing of the label as an inline fixed-size buffer, making it Copy and zero-allocation.

Valid characters are restricted to ASCII alphanumerics, underscores, and spaces ([A-Za-z0-9_ ]).

Implementations

impl GffLabel

pub fn new(value: impl AsRef<str>) -> Result<Self, GffLabelError>

Creates and validates a new GFF label.

Accepted characters are ASCII alphanumerics, underscores, and spaces.

pub const fn from_static(value: &'static str) -> Self

Constructs a GffLabel from a string literal at compile time.

Use this for hardcoded labels in source code. Invalid input becomes a compile error when the call appears in a const context, and panics immediately at the call site otherwise – validation cannot be deferred into a runtime data path.

For runtime input (binary parsing, JSON, user data), use GffLabel::new which returns a Result.

const TAG: GffLabel = GffLabel::from_static("Tag");
assert_eq!(TAG.as_str(), "Tag");

Invalid literals are rejected at compile time when used in a const context:

const BAD: GffLabel = GffLabel::from_static("Tag!");

pub fn as_str(&self) -> &str

Returns the string representation of the label.

pub const fn len(&self) -> usize

Returns the length in bytes (equals character count since all content is ASCII).

pub const fn is_empty(&self) -> bool

Returns true when the label is empty.

Trait Implementations

impl AsRef<str> for GffLabel

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for GffLabel

fn clone(&self) -> GffLabel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GffLabel

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

Formats the value using the given formatter.

impl Display for GffLabel

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

Formats the value using the given formatter.

impl From<GffLabel> for String

fn from(val: GffLabel) -> Self

Converts to this type from the input type.

impl FromStr for GffLabel

type Err = GffLabelError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for GffLabel

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 Ord for GffLabel

fn cmp(&self, other: &GffLabel) -> 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<&str> for GffLabel

fn eq(&self, other: &&str) -> 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 PartialEq<str> for GffLabel

fn eq(&self, other: &str) -> 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 PartialEq for GffLabel

fn eq(&self, other: &GffLabel) -> 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 GffLabel

fn partial_cmp(&self, other: &GffLabel) -> 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 TryFrom<&str> for GffLabel

type Error = GffLabelError

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<String> for GffLabel

type Error = GffLabelError

The type returned in the event of a conversion error.

fn try_from(value: String) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for GffLabel

impl Eq for GffLabel

impl StructuralPartialEq for GffLabel