Struct SingleSubBuilder 

pub struct SingleSubBuilder { /* private fields */ }

A builder for SingleSubst subtables.

Implementations

impl SingleSubBuilder

pub fn insert(&mut self, target: GlyphId16, replacement: GlyphId16)

Add this replacement to the builder.

If there is an existing substitution for the provided target, it will be overwritten.

pub fn can_add(&self, target: GlyphId16, replacement: GlyphId16) -> bool

Returns true if all the pairs of items in the two iterators can be added to this lookup.

The iterators are expected to be equal length.

pub fn len(&self) -> usize

Returns the number of rules in the builder.

pub fn is_empty(&self) -> bool

Returns true if there are no rules in this builder.

pub fn iter_pairs(&self) -> impl Iterator<Item = (GlyphId16, GlyphId16)> + '_

👎Deprecated since 0.38.2: use ::iter instead

Iterate all the substitution pairs in this builder.

used when compiling the aalt feature.

pub fn iter(&self) -> impl Iterator<Item = (GlyphId16, GlyphId16)> + '_

Iterate all the substitution pairs in this builder.

pub fn promote_to_multi_sub(self) -> MultipleSubBuilder

Convert this SingleSubBuilder into a MultipleSubBuilder.

This is used by the fea compiler in some cases to reduce the number of generated lookups.

pub fn promote_to_ligature_sub(self) -> LigatureSubBuilder

Convert this SingleSubBuilder into a LigatureSubBuilder.

This is used by the fea compiler in some cases to reduce the number of generated lookups.

Trait Implementations

impl Builder for SingleSubBuilder

type Output = Vec<SingleSubst>

The type produced by this builder.

fn build(self, _: &mut VariationStoreBuilder) -> Self::Output

Finalize the builder, producing the output.

impl Clone for SingleSubBuilder

fn clone(&self) -> SingleSubBuilder

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SingleSubBuilder

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

Formats the value using the given formatter.

impl Default for SingleSubBuilder

fn default() -> SingleSubBuilder

Returns the “default value” for a type.