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[gsubgpos] Comment

This commit is contained in:
Behdad Esfahbod 2022-11-23 21:14:28 -07:00
parent 7ec1c41a55
commit c15efdec49
1 changed files with 4 additions and 0 deletions
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4
src/hb-ot-layout-gsubgpos.hh
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@ -535,6 +535,8 @@ struct hb_ot_apply_context_t :
bool next (unsigned *unsafe_to = nullptr) bool next (unsigned *unsafe_to = nullptr)
{ {
assert (num_items > 0); assert (num_items > 0);
/* The alternate condition below is faster at string boundaries,
* but produces subpar "unsafe-to-concat" values. */
while (idx + 1/*num_items*/ < end) while (idx + 1/*num_items*/ < end)
{ {
idx++; idx++;
@ -568,6 +570,8 @@ struct hb_ot_apply_context_t :
bool prev (unsigned *unsafe_from = nullptr) bool prev (unsigned *unsafe_from = nullptr)
{ {
assert (num_items > 0); assert (num_items > 0);
/* The alternate condition below is faster at string boundaries,
* but produces subpar "unsafe-to-concat" values. */
while (idx > 0/*num_items - 1*/) while (idx > 0/*num_items - 1*/)
{ {
idx--; idx--;