rustybuzz 0.20.1

A complete harfbuzz shaping algorithm port to Rust.
Documentation 
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use crate::hb::ot_layout_gsubgpos::OT::hb_ot_apply_context_t;
use crate::hb::ot_layout_gsubgpos::{Apply, WouldApply, WouldApplyContext};
use ttf_parser::gsub::SubstitutionSubtable;

impl WouldApply for SubstitutionSubtable<'_> {
    fn would_apply(&self, ctx: &WouldApplyContext) -> bool {
        match self {
            Self::Single(t) => t.would_apply(ctx),
            Self::Multiple(t) => t.would_apply(ctx),
            Self::Alternate(t) => t.would_apply(ctx),
            Self::Ligature(t) => t.would_apply(ctx),
            Self::Context(t) => t.would_apply(ctx),
            Self::ChainContext(t) => t.would_apply(ctx),
            Self::ReverseChainSingle(t) => t.would_apply(ctx),
        }
    }
}

impl Apply for SubstitutionSubtable<'_> {
    fn apply(&self, ctx: &mut hb_ot_apply_context_t) -> Option<()> {
        match self {
            Self::Single(t) => t.apply(ctx),
            Self::Multiple(t) => t.apply(ctx),
            Self::Alternate(t) => t.apply(ctx),
            Self::Ligature(t) => t.apply(ctx),
            Self::Context(t) => t.apply(ctx),
            Self::ChainContext(t) => t.apply(ctx),
            Self::ReverseChainSingle(t) => t.apply(ctx),
        }
    }
}