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[OTLayout] Reuse context in collect_glyphs() recursion

This commit is contained in:
Behdad Esfahbod 2012-12-04 17:13:09 -05:00
parent 8303593ba1
commit 4a350d0eb2
1 changed files with 15 additions and 4 deletions
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19
src/hb-ot-layout-gsubgpos-private.hh
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@ -158,13 +158,24 @@ struct hb_collect_glyphs_context_t
/* Note that GPOS sets recurse_func to NULL already, so it doesn't get
* past the previous check. For GSUB, we only want to collect the output
* glyphs in the recursion. If those are not requested, we can go home now. */
* glyphs in the recursion. If output is not requested, we can go home now. */
if (output == hb_set_get_empty ())
return VOID;
hb_set_t *old_before = before;
hb_set_t *old_input = input;
hb_set_t *old_after = after;
before = input = after = hb_set_get_empty ();
nesting_level_left--;
/* Only collect output glyphs in the recursion. */
hb_collect_glyphs_context_t new_c (this->face, NULL, NULL, NULL, output, nesting_level_left);
recurse_func (&new_c, lookup_index);
recurse_func (this, lookup_index);
nesting_level_left++;
before = old_before;
input = old_input;
after = old_after;
return VOID;
}