Struct Tag

#[repr(transparent)]
pub struct Tag(pub u32);

A 4-byte tag.

Tuple Fields

0: u32

Implementations

impl Tag

pub const fn from_bytes(bytes: &[u8; 4]) -> Tag

Creates a Tag from bytes.

Example

println!("{}", ttf_parser::Tag::from_bytes(b"name"));

pub fn from_bytes_lossy(bytes: &[u8]) -> Tag

Creates a Tag from bytes.

In case of empty data will return Tag set to 0.

When bytes are shorter than 4, will set missing bytes to .

Data after first 4 bytes is ignored.

pub const fn to_bytes(self) -> [u8; 4]

Returns tag as 4-element byte array.

pub const fn to_chars(self) -> [char; 4]

Returns tag as 4-element byte array.

pub const fn is_null(&self) -> bool

Checks if tag is null / [0, 0, 0, 0].

pub const fn as_u32(&self) -> u32

Returns tag value as u32 number.

Trait Implementations

impl Clone for Tag

fn clone(&self) -> Tag

Returns a copy 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<(), Error>

Formats the value using the given formatter.

impl Display for Tag

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

Formats the value using the given formatter.

impl FromData for Tag

const SIZE: usize = 4usize

Object’s raw data size.

fn parse(data: &[u8]) -> Option<Tag>

Parses an object from a raw data.

impl Hash for Tag

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 Tag

fn cmp(&self, other: &Tag) -> 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 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 PartialOrd for Tag

fn partial_cmp(&self, other: &Tag) -> 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 Tag

impl Eq for Tag

impl StructuralPartialEq for Tag