Trait FromData 

pub trait FromData: Sized {
    const SIZE: usize;

    // Required method
    fn parse(data: &[u8]) -> Option<Self>;
}

A trait for parsing raw binary data of fixed size.

This is a low-level, internal trait that should not be used directly.

Required Associated Constants

const SIZE: usize

Object’s raw data size.

Not always the same as mem::size_of.

Required Methods

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

Parses an object from a raw data.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FromData for Option<Offset16>

const SIZE: usize = Offset16::SIZE

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

impl FromData for Option<Offset24>

const SIZE: usize = Offset24::SIZE

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

impl FromData for Option<Offset32>

const SIZE: usize = Offset32::SIZE

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

impl FromData for i8

const SIZE: usize = 1

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

impl FromData for i16

const SIZE: usize = 2

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

impl FromData for i32

const SIZE: usize = 4

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

impl FromData for u8

const SIZE: usize = 1

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

impl FromData for u16

const SIZE: usize = 2

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

impl FromData for u32

const SIZE: usize = 4

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

impl FromData for u64

const SIZE: usize = 8

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

impl FromData for ()

const SIZE: usize = 0

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

Implementors

impl FromData for CompositeMode

const SIZE: usize = 1

impl FromData for GradientExtend

const SIZE: usize = 1

impl FromData for PlatformId

const SIZE: usize = 2

impl FromData for Point

const SIZE: usize = 4

impl FromData for AxisValueMap

const SIZE: usize = 4

impl FromData for SettingName

const SIZE: usize = 4

impl FromData for Metrics

const SIZE: usize = 4

impl FromData for KerningPair

const SIZE: usize = 6

impl FromData for EntryData

const SIZE: usize = 2

impl FromData for GlyphPart

const SIZE: usize = 10

impl FromData for GlyphVariant

const SIZE: usize = 4

impl FromData for PartFlags

const SIZE: usize = 2

impl FromData for ContextualEntryData

const SIZE: usize = 4

impl FromData for Feature

const SIZE: usize = 12

impl FromData for InsertionEntryData

const SIZE: usize = 4

impl FromData for LookupFlags

const SIZE: usize = 2

impl FromData for RangeRecord

const SIZE: usize = 6

impl FromData for SequenceLookupRecord

const SIZE: usize = 4

impl FromData for AxisRecord

const SIZE: usize = 8

impl FromData for AxisValue

const SIZE: usize = 6

impl FromData for AxisValueSubtableFormat1

const SIZE: usize = 10

impl FromData for AxisValueSubtableFormat2

const SIZE: usize = 18

impl FromData for AxisValueSubtableFormat3

const SIZE: usize = 14

impl FromData for Fixed

const SIZE: usize = 4

impl FromData for GlyphId

const SIZE: usize = 2

impl FromData for TableRecord

const SIZE: usize = 16

impl FromData for Tag

const SIZE: usize = 4

impl FromData for VariationAxis

const SIZE: usize = 20

impl FromData for VerticalOriginMetrics

const SIZE: usize = 4

impl<T: FromData> FromData for GenericStateEntry<T>

const SIZE: usize