Struct ttf_parser::Tag

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

A 4-byte tag.

Implementations

impl Tag

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

Creates a Tag from bytes.

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

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.

pub fn to_lowercase(&self) -> Self

Converts tag to lowercase.

pub fn to_uppercase(&self) -> Self

Converts tag to uppercase.

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

Formats the value using the given formatter.

impl Display for Tag

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

Formats the value using the given formatter.

impl FromData for Tag

const SIZE: usize

Object’s raw data size.

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

Parses an object from a raw data.

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, 

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.

#[must_use]

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

Compares and returns the maximum of two values.

#[must_use]

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

Compares and returns the minimum of two values.

#[must_use]

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

Restrict a value to a certain interval.

impl PartialEq<Tag> for Tag

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<Tag> for Tag

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

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

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

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

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

This method 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 StructuralEq for Tag

impl StructuralPartialEq for Tag