Trait Validate 

pub trait Validate {
    // Required method
    fn validate_impl(&self, ctx: &mut ValidationCtx);

    // Provided method
    fn validate(&self) -> Result<(), ValidationReport> { ... }
}

Pre-compilation validation of tables.

The OpenType specification describes various requirements for different tables that are awkward to encode in the type system, such as requiring certain arrays to have equal lengths. These requirements are enforced via a validation pass.

Required Methods

fn validate_impl(&self, ctx: &mut ValidationCtx)

Validate this table.

If you need to implement this directly, it should look something like:

struct MyRecord {
    my_values: Vec<u16>,
}

impl Validate for MyRecord {
    fn validate_impl(&self, ctx: &mut ValidationCtx) {
        ctx.in_table("MyRecord", |ctx| {
            ctx.in_field("my_values", |ctx| {
                if self.my_values.len() > (u16::MAX as usize) {
                    ctx.report("array is too long");
                }
            })
        })
    }
}

Provided Methods

fn validate(&self) -> Result<(), ValidationReport>

Ensure that this table is well-formed, reporting any errors.

This is an auto-generated method that calls to validate_impl and collects any errors.

Implementations on Foreign Types

impl<T: Validate> Validate for Option<T>

fn validate_impl(&self, ctx: &mut ValidationCtx)

impl<T: Validate> Validate for BTreeSet<T>

fn validate_impl(&self, ctx: &mut ValidationCtx)

impl<T: Validate> Validate for Vec<T>

fn validate_impl(&self, ctx: &mut ValidationCtx)

Implementors

impl Validate for BaseCoord

impl Validate for CmapSubtable

impl Validate for ClipBox

impl Validate for Paint

impl Validate for CaretValue

impl Validate for Glyph

impl Validate for AnchorTable

impl Validate for write_fonts::tables::gpos::ExtensionSubtable

impl Validate for PairPos

impl Validate for PositionLookup

impl Validate for SinglePos

impl Validate for write_fonts::tables::gsub::ExtensionSubtable

impl Validate for SingleSubst

impl Validate for SubstitutionLookup

impl Validate for Ift

Available on crate feature ift only.

impl Validate for ChainedSequenceContext

impl Validate for ClassDef

impl Validate for Condition

impl Validate for CoverageTable

impl Validate for DeviceOrVariationIndex

impl Validate for FeatureParams

impl Validate for SequenceContext

impl Validate for Metadata

impl Validate for AxisValue

impl Validate for DeltaSetIndexMap

impl Validate for PackedPointNumbers

impl Validate for Avar

impl Validate for AxisValueMap

impl Validate for SegmentMaps

impl Validate for Axis

impl Validate for Base

impl Validate for BaseCoordFormat1

impl Validate for BaseCoordFormat2

impl Validate for BaseCoordFormat3

impl Validate for BaseLangSysRecord

impl Validate for BaseScript

impl Validate for BaseScriptList

impl Validate for BaseScriptRecord

impl Validate for BaseTagList

impl Validate for BaseValues

impl Validate for FeatMinMaxRecord

impl Validate for MinMax

impl Validate for Cmap0

impl Validate for Cmap2

impl Validate for Cmap4

impl Validate for Cmap6

impl Validate for Cmap8

impl Validate for Cmap10

impl Validate for Cmap12

impl Validate for Cmap13

impl Validate for Cmap14

impl Validate for Cmap

impl Validate for ConstantMapGroup

impl Validate for DefaultUvs

impl Validate for EncodingRecord

impl Validate for NonDefaultUvs

impl Validate for SequentialMapGroup

impl Validate for SubHeader

impl Validate for UnicodeRange

impl Validate for UvsMapping

impl Validate for VariationSelector

impl Validate for Affine2x3

impl Validate for BaseGlyph

impl Validate for BaseGlyphList

impl Validate for BaseGlyphPaint

impl Validate for Clip

impl Validate for ClipBoxFormat1

impl Validate for ClipBoxFormat2

impl Validate for ClipList

impl Validate for ColorIndex

impl Validate for ColorLine

impl Validate for ColorStop

impl Validate for Colr

impl Validate for Layer

impl Validate for LayerList

impl Validate for PaintColrGlyph

impl Validate for PaintColrLayers

impl Validate for PaintComposite

impl Validate for PaintGlyph

impl Validate for PaintLinearGradient

impl Validate for PaintRadialGradient

impl Validate for PaintRotate

impl Validate for PaintRotateAroundCenter

impl Validate for PaintScale

impl Validate for PaintScaleAroundCenter

impl Validate for PaintScaleUniform

impl Validate for PaintScaleUniformAroundCenter

impl Validate for PaintSkew

impl Validate for PaintSkewAroundCenter

impl Validate for PaintSolid

impl Validate for PaintSweepGradient

impl Validate for PaintTransform

impl Validate for PaintTranslate

impl Validate for PaintVarLinearGradient

impl Validate for PaintVarRadialGradient

impl Validate for PaintVarRotate

impl Validate for PaintVarRotateAroundCenter

impl Validate for PaintVarScale

impl Validate for PaintVarScaleAroundCenter

impl Validate for PaintVarScaleUniform

impl Validate for PaintVarScaleUniformAroundCenter

impl Validate for PaintVarSkew

impl Validate for PaintVarSkewAroundCenter

impl Validate for PaintVarSolid

impl Validate for PaintVarSweepGradient

impl Validate for PaintVarTransform

impl Validate for PaintVarTranslate

impl Validate for VarAffine2x3

impl Validate for VarColorIndex

impl Validate for VarColorLine

impl Validate for VarColorStop

impl Validate for ColorRecord

impl Validate for Cpal

impl Validate for Dsig

impl Validate for SignatureBlockFormat1

impl Validate for SignatureRecord

impl Validate for AxisInstanceArrays

impl Validate for Fvar

impl Validate for InstanceRecord

impl Validate for VariationAxisRecord

impl Validate for Gasp

impl Validate for GaspRange

impl Validate for AttachList

impl Validate for AttachPoint

impl Validate for CaretValueFormat1

impl Validate for CaretValueFormat2

impl Validate for CaretValueFormat3

impl Validate for Gdef

impl Validate for LigCaretList

impl Validate for LigGlyph

impl Validate for MarkGlyphSets

impl Validate for CompositeGlyph

impl Validate for Glyf

impl Validate for SimpleGlyph

impl Validate for AnchorFormat1

impl Validate for AnchorFormat2

impl Validate for AnchorFormat3

impl Validate for BaseArray

impl Validate for BaseRecord

impl Validate for Class1Record

impl Validate for Class2Record

impl Validate for ComponentRecord

impl Validate for CursivePosFormat1

impl Validate for EntryExitRecord

impl Validate for Gpos

impl Validate for LigatureArray

impl Validate for LigatureAttach

impl Validate for Mark2Array

impl Validate for Mark2Record

impl Validate for MarkArray

impl Validate for MarkBasePosFormat1

impl Validate for MarkLigPosFormat1

impl Validate for MarkMarkPosFormat1

impl Validate for MarkRecord

impl Validate for PairPosFormat1

impl Validate for PairPosFormat2

impl Validate for PairSet

impl Validate for PairValueRecord

impl Validate for PositionChainContext

impl Validate for PositionSequenceContext

impl Validate for SinglePosFormat1

impl Validate for SinglePosFormat2

impl Validate for write_fonts::tables::gpos::ValueRecord

impl Validate for AlternateSet

impl Validate for AlternateSubstFormat1

impl Validate for Gsub

impl Validate for Ligature

impl Validate for LigatureSet

impl Validate for LigatureSubstFormat1

impl Validate for MultipleSubstFormat1

impl Validate for ReverseChainSingleSubstFormat1

impl Validate for Sequence

impl Validate for SingleSubstFormat1

impl Validate for SingleSubstFormat2

impl Validate for SubstitutionChainContext

impl Validate for SubstitutionSequenceContext

impl Validate for GlyphVariationData

impl Validate for GlyphVariationDataHeader

impl Validate for Gvar

impl Validate for SharedTuples

impl Validate for Head

impl Validate for Hhea

impl Validate for Hmtx

impl Validate for LongMetric

impl Validate for Hvar

impl Validate for DesignSpaceSegment

Available on crate feature ift only.

impl Validate for EntryData

Available on crate feature ift only.

impl Validate for EntryMapRecord

Available on crate feature ift only.

impl Validate for FeatureMap

Available on crate feature ift only.

impl Validate for write_fonts::tables::ift::FeatureRecord

Available on crate feature ift only.

impl Validate for write_fonts::tables::ift::GlyphData

Available on crate feature ift only.

impl Validate for GlyphKeyedPatch

Available on crate feature ift only.

impl Validate for GlyphMap

Available on crate feature ift only.

impl Validate for GlyphPatches

Available on crate feature ift only.

impl Validate for IdStringData

Available on crate feature ift only.

impl Validate for MappingEntries

Available on crate feature ift only.

impl Validate for PatchMapFormat1

Available on crate feature ift only.

impl Validate for PatchMapFormat2

Available on crate feature ift only.

impl Validate for TableKeyedPatch

Available on crate feature ift only.

impl Validate for TablePatch

Available on crate feature ift only.

impl Validate for ChainedClassSequenceRule

impl Validate for ChainedClassSequenceRuleSet

impl Validate for ChainedSequenceContextFormat1

impl Validate for ChainedSequenceContextFormat2

impl Validate for ChainedSequenceContextFormat3

impl Validate for ChainedSequenceRule

impl Validate for ChainedSequenceRuleSet

impl Validate for CharacterVariantParams

impl Validate for ClassDefFormat1

impl Validate for ClassDefFormat2

impl Validate for ClassRangeRecord

impl Validate for ClassSequenceRule

impl Validate for ClassSequenceRuleSet

impl Validate for ConditionFormat1

impl Validate for ConditionFormat2

impl Validate for ConditionFormat3

impl Validate for ConditionFormat4

impl Validate for ConditionFormat5

impl Validate for ConditionSet

impl Validate for CoverageFormat1

impl Validate for CoverageFormat2

impl Validate for Device

impl Validate for Feature

impl Validate for FeatureList

impl Validate for write_fonts::tables::layout::FeatureRecord

impl Validate for FeatureTableSubstitution

impl Validate for FeatureTableSubstitutionRecord

impl Validate for FeatureVariationRecord

impl Validate for FeatureVariations

impl Validate for LangSys

impl Validate for LangSysRecord

impl Validate for PendingVariationIndex

impl Validate for RangeRecord

impl Validate for Script

impl Validate for ScriptList

impl Validate for ScriptRecord

impl Validate for SequenceContextFormat1

impl Validate for SequenceContextFormat2

impl Validate for SequenceContextFormat3

impl Validate for SequenceLookupRecord

impl Validate for SequenceRule

impl Validate for SequenceRuleSet

impl Validate for SizeParams

impl Validate for StylisticSetParams

impl Validate for VariationIndex

impl Validate for Loca

impl Validate for Maxp

impl Validate for DataMapRecord

impl Validate for Meta

impl Validate for Mvar

impl Validate for write_fonts::tables::mvar::ValueRecord

impl Validate for LangTagRecord

impl Validate for Name

impl Validate for NameRecord

impl Validate for Os2

impl Validate for Post

impl Validate for write_fonts::tables::sbix::GlyphData

impl Validate for Sbix

impl Validate for Strike

impl Validate for AxisRecord

impl Validate for AxisValueArray

impl Validate for AxisValueFormat1

impl Validate for AxisValueFormat2

impl Validate for AxisValueFormat3

impl Validate for AxisValueFormat4

impl Validate for AxisValueRecord

impl Validate for Stat

impl Validate for DeltaSetIndexMapFormat0

impl Validate for DeltaSetIndexMapFormat1

impl Validate for ItemVariationData

impl Validate for ItemVariationStore

impl Validate for PackedDeltas

impl Validate for RegionAxisCoordinates

impl Validate for Tuple

impl Validate for TupleVariationHeader

impl Validate for VariationRegion

impl Validate for VariationRegionList

impl Validate for Vhea

impl Validate for Vmtx

impl Validate for Vvar

impl<T: Validate> Validate for ExtensionPosFormat1<T>

impl<T: Validate> Validate for ExtensionSubstFormat1<T>

impl<T: Validate> Validate for Lookup<T>

impl<T: Validate> Validate for LookupList<T>

impl<const N: usize, T: Validate> Validate for NullableOffsetMarker<T, N>

impl<const N: usize, T: Validate> Validate for OffsetMarker<T, N>