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diff --git a/cpp/src/sfntly/table/bitmap/index_sub_table_format3.h b/cpp/src/sfntly/table/bitmap/index_sub_table_format3.h
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+/*
+ * Copyright 2011 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT3_H_
+#define SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT3_H_
+
+#include "sfntly/table/bitmap/index_sub_table.h"
+
+namespace sfntly {
+// Format 3 Index Subtable Entry.
+class IndexSubTableFormat3 : public IndexSubTable,
+                             public RefCounted<IndexSubTableFormat3> {
+ public:
+  class Builder : public IndexSubTable::Builder,
+                  public RefCounted<Builder> {
+   public:
+    class BitmapGlyphInfoIterator
+        : public RefIterator<BitmapGlyphInfo, Builder, IndexSubTable::Builder> {
+     public:
+      explicit BitmapGlyphInfoIterator(Builder* container);
+      virtual ~BitmapGlyphInfoIterator() {}
+
+      virtual bool HasNext();
+      CALLER_ATTACH virtual BitmapGlyphInfo* Next();
+
+     private:
+      int32_t glyph_id_;
+    };
+
+    virtual ~Builder();
+    virtual int32_t NumGlyphs();
+    virtual int32_t GlyphStartOffset(int32_t glyph_id);
+    virtual int32_t GlyphLength(int32_t glyph_id);
+    CALLER_ATTACH virtual BitmapGlyphInfoIterator* GetIterator();
+
+    virtual CALLER_ATTACH FontDataTable* SubBuildTable(ReadableFontData* data);
+    virtual void SubDataSet();
+    virtual int32_t SubDataSizeToSerialize();
+    virtual bool SubReadyToSerialize();
+    virtual int32_t SubSerialize(WritableFontData* new_data);
+
+    void SetOffsetArray(const IntegerList& offset_array);
+
+    static CALLER_ATTACH Builder* CreateBuilder();
+    static CALLER_ATTACH Builder* CreateBuilder(ReadableFontData* data,
+                                                int32_t index_sub_table_offset,
+                                                int32_t first_glyph_index,
+                                                int32_t last_glyph_index);
+    static CALLER_ATTACH Builder* CreateBuilder(WritableFontData* data,
+                                                int32_t index_sub_table_offset,
+                                                int32_t first_glyph_index,
+                                                int32_t last_glyph_index);
+
+   protected:
+    void Revert();
+
+   private:
+    Builder();
+    Builder(WritableFontData* data,
+            int32_t first_glyph_index,
+            int32_t last_glyph_index);
+    Builder(ReadableFontData* data,
+            int32_t first_glyph_index,
+            int32_t last_glyph_index);
+    IntegerList* GetOffsetArray();
+    void Initialize(ReadableFontData* data);
+
+    static int32_t DataLength(ReadableFontData* data,
+                              int32_t index_sub_table_offset,
+                              int32_t first_glyph_index,
+                              int32_t last_glyph_index);
+
+    IntegerList offset_array_;
+  };
+
+  virtual ~IndexSubTableFormat3();
+
+  virtual int32_t NumGlyphs();
+  virtual int32_t GlyphStartOffset(int32_t glyph_id);
+  virtual int32_t GlyphLength(int32_t glyph_id);
+
+  static int32_t GetDataLength(ReadableFontData* data,
+                               int32_t offset,
+                               int32_t first,
+                               int32_t last);
+
+ private:
+  IndexSubTableFormat3(ReadableFontData* data,
+                       int32_t first_glyph_index,
+                       int32_t last_glyph_index);
+  int32_t Loca(int32_t loca_index);
+
+  friend class Builder;
+};
+typedef Ptr<IndexSubTableFormat3> IndexSubTableFormat3Ptr;
+typedef Ptr<IndexSubTableFormat3::Builder> IndexSubTableFormat3BuilderPtr;
+
+}  // namespace sfntly
+
+#endif  // SFNTLY_CPP_SRC_SFNTLY_TABLE_BITMAP_INDEX_SUBTABLE_FORMAT3_H_