Enum read_fonts::tables::gsub::SubstitutionSubtables

pub enum SubstitutionSubtables<'a> {
    Single(Subtables<'a, SingleSubst<'a>, ExtensionSubstFormat1<'a, SingleSubst<'a>>>),
    Multiple(Subtables<'a, MultipleSubstFormat1<'a>, ExtensionSubstFormat1<'a, MultipleSubstFormat1<'a>>>),
    Alternate(Subtables<'a, AlternateSubstFormat1<'a>, ExtensionSubstFormat1<'a, AlternateSubstFormat1<'a>>>),
    Ligature(Subtables<'a, LigatureSubstFormat1<'a>, ExtensionSubstFormat1<'a, LigatureSubstFormat1<'a>>>),
    Contextual(Subtables<'a, SubstitutionSequenceContext<'a>, ExtensionSubstFormat1<'a, SubstitutionSequenceContext<'a>>>),
    ChainContextual(Subtables<'a, SubstitutionChainContext<'a>, ExtensionSubstFormat1<'a, SubstitutionChainContext<'a>>>),
    Reverse(Subtables<'a, ReverseChainSingleSubstFormat1<'a>, ExtensionSubstFormat1<'a, ReverseChainSingleSubstFormat1<'a>>>),
}

The subtables from a GPOS lookup.

This type is a convenience that removes the need to dig into the SubstitutionLookup enum in order to access subtables, and it also abstracts away the distinction between extension and non-extension lookups.

Variants

Single(Subtables<'a, SingleSubst<'a>, ExtensionSubstFormat1<'a, SingleSubst<'a>>>)

Multiple(Subtables<'a, MultipleSubstFormat1<'a>, ExtensionSubstFormat1<'a, MultipleSubstFormat1<'a>>>)

Alternate(Subtables<'a, AlternateSubstFormat1<'a>, ExtensionSubstFormat1<'a, AlternateSubstFormat1<'a>>>)

Ligature(Subtables<'a, LigatureSubstFormat1<'a>, ExtensionSubstFormat1<'a, LigatureSubstFormat1<'a>>>)

Contextual(Subtables<'a, SubstitutionSequenceContext<'a>, ExtensionSubstFormat1<'a, SubstitutionSequenceContext<'a>>>)

ChainContextual(Subtables<'a, SubstitutionChainContext<'a>, ExtensionSubstFormat1<'a, SubstitutionChainContext<'a>>>)

Reverse(Subtables<'a, ReverseChainSingleSubstFormat1<'a>, ExtensionSubstFormat1<'a, ReverseChainSingleSubstFormat1<'a>>>)