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Ligation breakdown for C-likes 1 (#1555)

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This commit is contained in:
be5invis 2023-02-20 22:53:57 -08:00
parent 5d594676de
commit d3b8e339a2
9 changed files with 1132 additions and 843 deletions
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33
font-src/derive-spacing.mjs
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@ -97,39 +97,6 @@ async function deriveFixed_DropFeatures(font, fFixed) {
feature.params = null;
}
}
markSweepLookups(font.gsub);
}
function markSweepLookups(table) {
let lookupSet = new Set();
for (const feature of table.features) {
for (const lookup of feature.lookups) {
lookupSet.add(lookup);
}
}
do {
let sizeBefore = lookupSet.size;
for (const lookup of table.lookups) {
if (lookup instanceof Ot.Gsub.Chaining || lookup instanceof Ot.Gpos.Chaining) {
for (const rule of lookup.rules) {
for (const app of rule.applications) lookupSet.add(app.apply);
}
}
}
let sizeAfter = lookupSet.size;
if (sizeBefore >= sizeAfter) break;
} while (true);
let front = 0;
for (let rear = 0; rear < table.lookups.length; rear++) {
if (lookupSet.has(table.lookups[rear])) {
table.lookups[front++] = table.lookups[rear];
}
}
table.lookups.length = front;
return lookupSet;
}
async function readTTF(argv) {