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 = 2usize

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

impl FromData for Option<Offset24>

const SIZE: usize = 3usize

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

impl FromData for Option<Offset32>

const SIZE: usize = 4usize

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

impl FromData for i8

const SIZE: usize = 1usize

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

impl FromData for i16

const SIZE: usize = 2usize

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

impl FromData for i32

const SIZE: usize = 4usize

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

impl FromData for u8

const SIZE: usize = 1usize

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

impl FromData for u16

const SIZE: usize = 2usize

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

impl FromData for u32

const SIZE: usize = 4usize

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

impl FromData for u64

const SIZE: usize = 8usize

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

impl FromData for ()

const SIZE: usize = 0usize

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

Implementors

impl FromData for CompositeMode

const SIZE: usize = 1usize

impl FromData for GradientExtend

const SIZE: usize = 1usize

impl FromData for Magic

const SIZE: usize = 4usize

impl FromData for PlatformId

const SIZE: usize = 2usize

impl FromData for OffsetSize

const SIZE: usize = 1usize

impl FromData for LookupSegment

const SIZE: usize = 6usize

impl FromData for LookupSingle

const SIZE: usize = 4usize

impl FromData for Point

const SIZE: usize = 4usize

impl FromData for AxisValueMap

const SIZE: usize = 4usize

impl FromData for SettingName

const SIZE: usize = 4usize

impl FromData for FeatureTableSubstitutionRecord

const SIZE: usize = 6usize

impl FromData for FeatureVariationRecord

const SIZE: usize = 8usize

impl FromData for TagRecord

const SIZE: usize = 6usize

impl FromData for RangeRecord

const SIZE: usize = 6usize

impl FromData for Metrics

const SIZE: usize = 4usize

impl FromData for KerningPair

const SIZE: usize = 6usize

impl FromData for EntryData

const SIZE: usize = 2usize

impl FromData for GlyphPart

const SIZE: usize = 10usize

impl FromData for GlyphVariant

const SIZE: usize = 4usize

impl FromData for PartFlags

const SIZE: usize = 2usize

impl FromData for ContextualEntryData

const SIZE: usize = 4usize

impl FromData for Feature

const SIZE: usize = 12usize

impl FromData for InsertionEntryData

const SIZE: usize = 4usize

impl FromData for LookupFlags

const SIZE: usize = 2usize

impl FromData for SequenceLookupRecord

const SIZE: usize = 4usize

impl FromData for F2DOT14

const SIZE: usize = 2usize

impl FromData for Offset16

const SIZE: usize = 2usize

impl FromData for Offset24

const SIZE: usize = 3usize

impl FromData for Offset32

const SIZE: usize = 4usize

impl FromData for U24

const SIZE: usize = 3usize

impl FromData for AxisRecord

const SIZE: usize = 8usize

impl FromData for AxisValue

const SIZE: usize = 6usize

impl FromData for AxisValueSubtableFormat1

const SIZE: usize = 10usize

impl FromData for AxisValueSubtableFormat2

const SIZE: usize = 18usize

impl FromData for AxisValueSubtableFormat3

const SIZE: usize = 14usize

impl FromData for Fixed

const SIZE: usize = 4usize

impl FromData for GlyphId

const SIZE: usize = 2usize

impl FromData for TableRecord

const SIZE: usize = 16usize

impl FromData for Tag

const SIZE: usize = 4usize

impl FromData for VariationAxis

const SIZE: usize = 20usize

impl FromData for GlyphIdOffsetPair

const SIZE: usize = 4usize

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

const SIZE: usize = 3usize

impl FromData for Format2Range

const SIZE: usize = 4usize

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

const SIZE: usize = 2usize

impl FromData for Supplement

const SIZE: usize = 3usize

impl FromData for StringId

const SIZE: usize = 2usize

impl FromData for SubHeaderRecord

const SIZE: usize = 8usize

impl FromData for SequentialMapGroup

const SIZE: usize = 12usize

impl FromData for UVSMappingRecord

const SIZE: usize = 5usize

impl FromData for UnicodeRangeRecord

const SIZE: usize = 4usize

impl FromData for VariationSelectorRecord

const SIZE: usize = 11usize

impl FromData for EncodingRecord

const SIZE: usize = 8usize

impl FromData for BaseGlyphPaintRecord

const SIZE: usize = 6usize

impl FromData for BaseGlyphRecord

const SIZE: usize = 6usize

impl FromData for ClipRecord

const SIZE: usize = 7usize

impl FromData for ColorStopRaw

const SIZE: usize = 6usize

impl FromData for LayerRecord

const SIZE: usize = 4usize

impl FromData for VarColorStopRaw

const SIZE: usize = 10usize

impl FromData for BgraColor

const SIZE: usize = 4usize

impl FromData for FeatureNameRecord

const SIZE: usize = 12usize

impl FromData for EntryExitRecord

const SIZE: usize = 4usize

impl FromData for MarkRecord

const SIZE: usize = 4usize

impl FromData for ValueFormatFlags

const SIZE: usize = 2usize

impl FromData for Control

const SIZE: usize = 1usize

impl FromData for AATCoverage

const SIZE: usize = 1usize

impl FromData for OTCoverage

const SIZE: usize = 1usize

impl FromData for KernInfoRecord

const SIZE: usize = 8usize

impl FromData for MathValueRecord

const SIZE: usize = 4usize

impl FromData for ValueRecord

const SIZE: usize = 8usize

impl FromData for NameRecord

const SIZE: usize = 12usize

impl FromData for SvgDocumentRecord

const SIZE: usize = 12usize

impl FromData for TrackTableRecord

const SIZE: usize = 8usize

impl FromData for RegionAxisCoordinatesRecord

const SIZE: usize = 6usize

impl FromData for VerticalOriginMetrics

const SIZE: usize = 4usize

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

const SIZE: usize