HarfBuzz: Update to version 6.0.0

1 files changed, 53 insertions, 8 deletions

diff --git a/thirdparty/harfbuzz/src/hb-subset-accelerator.hh b/thirdparty/harfbuzz/src/hb-subset-accelerator.hh
index 34bd0534fb..63ae6d77e2 100644
--- a/thirdparty/harfbuzz/src/hb-subset-accelerator.hh
+++ b/thirdparty/harfbuzz/src/hb-subset-accelerator.hh
@@ -31,21 +31,34 @@
 #include "hb.hh"
 
 #include "hb-map.hh"
+#include "hb-multimap.hh"
 #include "hb-set.hh"
 
+extern HB_INTERNAL hb_user_data_key_t _hb_subset_accelerator_user_data_key;
+
+namespace CFF {
+struct cff_subset_accelerator_t;
+}
+
+namespace OT {
+struct SubtableUnicodesCache;
+};
+
 struct hb_subset_accelerator_t
 {
   static hb_user_data_key_t* user_data_key()
   {
-    static hb_user_data_key_t key;
-    return &key;
+    return &_hb_subset_accelerator_user_data_key;
   }
 
   static hb_subset_accelerator_t* create(const hb_map_t& unicode_to_gid_,
-                                         const hb_set_t& unicodes_) {
+					 const hb_multimap_t gid_to_unicodes_,
+					 const hb_set_t& unicodes_,
+					 bool has_seac_) {
     hb_subset_accelerator_t* accel =
         (hb_subset_accelerator_t*) hb_malloc (sizeof(hb_subset_accelerator_t));
-    new (accel) hb_subset_accelerator_t (unicode_to_gid_, unicodes_);
+    new (accel) hb_subset_accelerator_t (unicode_to_gid_, gid_to_unicodes_, unicodes_);
+    accel->has_seac = has_seac_;
     return accel;
   }
 
@@ -53,22 +66,54 @@ struct hb_subset_accelerator_t
     if (!value) return;
 
     hb_subset_accelerator_t* accel = (hb_subset_accelerator_t*) value;
+
+    if (accel->cff_accelerator && accel->destroy_cff_accelerator)
+      accel->destroy_cff_accelerator ((void*) accel->cff_accelerator);
+
+    if (accel->cmap_cache && accel->destroy_cmap_cache)
+      accel->destroy_cmap_cache ((void*) accel->cmap_cache);
+
     accel->~hb_subset_accelerator_t ();
     hb_free (accel);
   }
 
-  hb_subset_accelerator_t(const hb_map_t& unicode_to_gid_,
+  hb_subset_accelerator_t (const hb_map_t& unicode_to_gid_,
+			   const hb_multimap_t& gid_to_unicodes_,
                           const hb_set_t& unicodes_)
-      : unicode_to_gid(unicode_to_gid_), unicodes(unicodes_) {}
+      : unicode_to_gid(unicode_to_gid_), gid_to_unicodes (gid_to_unicodes_), unicodes(unicodes_),
+        cmap_cache(nullptr), destroy_cmap_cache(nullptr),
+        has_seac(false), cff_accelerator(nullptr), destroy_cff_accelerator(nullptr)
+  { sanitized_table_cache_lock.init (); }
+
+  ~hb_subset_accelerator_t ()
+  { sanitized_table_cache_lock.fini (); }
+
+  // Generic
+
+  mutable hb_mutex_t sanitized_table_cache_lock;
+  mutable hb_hashmap_t<hb_tag_t, hb::unique_ptr<hb_blob_t>> sanitized_table_cache;
 
   const hb_map_t unicode_to_gid;
+  const hb_multimap_t gid_to_unicodes;
   const hb_set_t unicodes;
+
+  // cmap
+  const OT::SubtableUnicodesCache* cmap_cache;
+  hb_destroy_func_t destroy_cmap_cache;
+
+  // CFF
+  bool has_seac;
+  const CFF::cff_subset_accelerator_t* cff_accelerator;
+  hb_destroy_func_t destroy_cff_accelerator;
+
   // TODO(garretrieger): cumulative glyf checksum map
-  // TODO(garretrieger): sanitized table cache.
 
   bool in_error () const
   {
-    return unicode_to_gid.in_error() || unicodes.in_error ();
+    return unicode_to_gid.in_error () ||
+	   gid_to_unicodes.in_error () ||
+	   unicodes.in_error () ||
+	   sanitized_table_cache.in_error ();
   }
 };