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 Magic

const SIZE: usize = 4

impl FromData for PlatformId

const SIZE: usize = 2

impl FromData for OffsetSize

const SIZE: usize = 1

impl FromData for LookupSegment

const SIZE: usize = 6

impl FromData for LookupSingle

const SIZE: usize = 4

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 FeatureTableSubstitutionRecord

const SIZE: usize = 6

impl FromData for FeatureVariationRecord

const SIZE: usize = 8

impl FromData for TagRecord

const SIZE: usize = 6

impl FromData for RangeRecord

const SIZE: usize = 6

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 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 GlyphIdOffsetPair

const SIZE: usize = 4

impl FromData for ttf_parser::tables::cff::charset::Format1Range

const SIZE: usize = 3

impl FromData for Format2Range

const SIZE: usize = 4

impl FromData for ttf_parser::tables::cff::encoding::Format1Range

const SIZE: usize = 2

impl FromData for Supplement

const SIZE: usize = 3

impl FromData for StringId

const SIZE: usize = 2

impl FromData for SubHeaderRecord

const SIZE: usize = 8

impl FromData for SequentialMapGroup

const SIZE: usize = 12

impl FromData for UVSMappingRecord

const SIZE: usize = 5

impl FromData for UnicodeRangeRecord

const SIZE: usize = 4

impl FromData for VariationSelectorRecord

const SIZE: usize = 11

impl FromData for EncodingRecord

const SIZE: usize = 8

impl FromData for BaseGlyphPaintRecord

const SIZE: usize = 6

impl FromData for BaseGlyphRecord

const SIZE: usize = 6

impl FromData for ClipRecord

const SIZE: usize = 7

impl FromData for ColorStopRaw

const SIZE: usize = 6

impl FromData for LayerRecord

const SIZE: usize = 4

impl FromData for VarColorStopRaw

Available on crate feature variable-fonts only.

const SIZE: usize = 10

impl FromData for BgraColor

const SIZE: usize = 4

impl FromData for FeatureNameRecord

const SIZE: usize = 12

impl FromData for EntryExitRecord

const SIZE: usize = 4

impl FromData for MarkRecord

const SIZE: usize = 4

impl FromData for ValueFormatFlags

const SIZE: usize = 2

impl FromData for Control

const SIZE: usize = 1

impl FromData for AATCoverage

const SIZE: usize = 1

impl FromData for OTCoverage

const SIZE: usize = 1

impl FromData for KernInfoRecord

const SIZE: usize = 8

impl FromData for MathValueRecord

const SIZE: usize = 4

impl FromData for ValueRecord

const SIZE: usize = 8

impl FromData for NameRecord

const SIZE: usize = 12

impl FromData for SvgDocumentRecord

const SIZE: usize = 12

impl FromData for TrackTableRecord

const SIZE: usize = 8

impl FromData for RegionAxisCoordinatesRecord

const SIZE: usize = 6

impl FromData for VerticalOriginMetrics

const SIZE: usize = 4

impl FromData for F2DOT14

const SIZE: usize = 2

impl FromData for Offset16

const SIZE: usize = 2

impl FromData for Offset24

const SIZE: usize = 3

impl FromData for Offset32

const SIZE: usize = 4

impl FromData for U24

const SIZE: usize = 3

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

const SIZE: usize