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[gsubgpos] Simplify OT::ClassDefFormat2::intersected_class_glyphs()

This commit is contained in:
Behdad Esfahbod 2022-05-11 13:39:30 -06:00
parent 3261e05bdb
commit 137af3612b
1 changed files with 19 additions and 20 deletions
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39
src/hb-ot-layout-common.hh
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@ -2057,8 +2057,9 @@ struct ClassDefFormat1
unsigned count = classValue.len; unsigned count = classValue.len;
if (klass == 0) if (klass == 0)
{ {
unsigned start_glyph = startGlyph;
for (unsigned g = HB_SET_VALUE_INVALID; for (unsigned g = HB_SET_VALUE_INVALID;
hb_set_next (glyphs, &g) && g < startGlyph;) hb_set_next (glyphs, &g) && g < start_glyph;)
intersect_glyphs->add (g); intersect_glyphs->add (g);
for (unsigned g = startGlyph + count - 1; for (unsigned g = startGlyph + count - 1;
@ -2070,7 +2071,19 @@ struct ClassDefFormat1
for (unsigned i = 0; i < count; i++) for (unsigned i = 0; i < count; i++)
if (classValue[i] == klass && glyphs->has (startGlyph + i)) if (classValue[i] == klass && glyphs->has (startGlyph + i))
intersect_glyphs->add (startGlyph + i); intersect_glyphs->add (startGlyph + i);
return;
#if 0
/* The following implementation is faster asymptotically, but slower
* in practice. */
unsigned start_glyph = startGlyph;
unsigned end_glyph = start_glyph + count;
for (unsigned g = startGlyph - 1;
hb_set_next (glyphs, &g) && g < end_glyph;)
if (classValue.arrayZ[g - start_glyph] == klass)
intersect_glyphs->add (g);
#endif
} }
void intersected_classes (const hb_set_t *glyphs, hb_set_t *intersect_classes) const void intersected_classes (const hb_set_t *glyphs, hb_set_t *intersect_classes) const
@ -2297,28 +2310,14 @@ struct ClassDefFormat2
return; return;
} }
hb_codepoint_t g = HB_SET_VALUE_INVALID;
for (unsigned int i = 0; i < count; i++) for (unsigned int i = 0; i < count; i++)
{ {
if (rangeRecord[i].value != klass) continue; if (rangeRecord[i].value != klass) continue;
if (g != HB_SET_VALUE_INVALID) unsigned end = rangeRecord[i].last + 1;
{ for (hb_codepoint_t g = rangeRecord[i].first - 1;
if (g >= rangeRecord[i].first && hb_set_next (glyphs, &g) && g < end;)
g <= rangeRecord[i].last) intersect_glyphs->add (g);
intersect_glyphs->add (g);
if (g > rangeRecord[i].last)
continue;
}
g = rangeRecord[i].first - 1;
while (hb_set_next (glyphs, &g))
{
if (g >= rangeRecord[i].first && g <= rangeRecord[i].last)
intersect_glyphs->add (g);
else if (g > rangeRecord[i].last)
break;
}
} }
} }