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-rw-r--r--Build/source/libs/harfbuzz/harfbuzz-src/src/hb-bit-page.hh9
1 files changed, 8 insertions, 1 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-bit-page.hh b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-bit-page.hh
index 97598366544..cbe918ee401 100644
--- a/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-bit-page.hh
+++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/hb-bit-page.hh
@@ -40,11 +40,18 @@ struct hb_bit_page_t
bool is_empty () const
{
- for (unsigned int i = 0; i < len (); i++)
+ for (unsigned i = 0; i < len (); i++)
if (v[i])
return false;
return true;
}
+ uint32_t hash () const
+ {
+ uint32_t h = 0;
+ for (unsigned i = 0; i < len (); i++)
+ h = h * 31 + hb_hash (v[i]);
+ return h;
+ }
void add (hb_codepoint_t g) { elt (g) |= mask (g); }
void del (hb_codepoint_t g) { elt (g) &= ~mask (g); }