1use crate::hb::ot_layout::LayoutLookup;
2use crate::hb::ot_layout_common::PositioningLookup;
3use crate::hb::ot_layout_gsubgpos::Apply;
4use crate::hb::ot_layout_gsubgpos::OT::hb_ot_apply_context_t;
5use crate::hb::set_digest::{hb_set_digest_ext, hb_set_digest_t};
6
7impl LayoutLookup for PositioningLookup<'_> {
8 fn props(&self) -> u32 {
9 self.props
10 }
11
12 fn is_reverse(&self) -> bool {
13 false
14 }
15
16 fn digest(&self) -> &hb_set_digest_t {
17 &self.set_digest
18 }
19}
20
21impl Apply for PositioningLookup<'_> {
22 fn apply(&self, ctx: &mut hb_ot_apply_context_t) -> Option<()> {
23 if self.digest().may_have_glyph(ctx.buffer.cur(0).as_glyph()) {
24 for subtable: &PositioningSubtable<'_> in &self.subtables {
25 if subtable.apply(ctx).is_some() {
26 return Some(());
27 }
28 }
29 }
30
31 None
32 }
33}
34