38   virtual size_t TotalSize() const override {  in TotalSize()
49   const void* data() const override {  in data()
53   size_t size() const override { return len_; }  in size()
55   bool Next(const void** data, size_t* size) override {  in Next()
65   void BackUp(size_t count) override {  in BackUp()
73   bool CanRewind() const override { return true; }  in CanRewind()
75   bool Rewind() override {  in Rewind()
80   size_t ByteCount() const override { return next_read_ - offset_; }  in ByteCount()
82   bool HadError() const override { return false; }  in HadError()
100   const void* data() const override { return map_.getDataPtr(); }  in data()
102   size_t size() const override { return map_.getDataLength(); }  in size()
104   bool Next(const void** data, size_t* size) override {  in Next()
114   void BackUp(size_t count) override {  in BackUp()
122   bool CanRewind() const override { return true; }  in CanRewind()
124   bool Rewind() override {  in Rewind()
129   size_t ByteCount() const override { return next_read_; }  in ByteCount()
131   bool HadError() const override { return false; }  in HadError()
148   const void* data() const override { return data_.get(); }  in data()
150   size_t size() const override { return size_; }  in size()
152   bool Next(const void** data, size_t* size) override {  in Next()
162   void BackUp(size_t count) override {  in BackUp()
170   bool CanRewind() const override { return true; }  in CanRewind()
172   bool Rewind() override {  in Rewind()
177   size_t ByteCount() const override { return next_read_; }  in ByteCount()
179   bool HadError() const override { return false; }  in HadError()
194   const void* data() const override {  in data()
199   size_t size() const override { return 0u; }  in size()
201   bool Next(const void** /*data*/, size_t* /*size*/) override { return false; }  in Next()
203   void BackUp(size_t /*count*/) override {}  in BackUp()
205   bool CanRewind() const override { return true; }  in CanRewind()
207   bool Rewind() override { return true; }  in Rewind()
209   size_t ByteCount() const override { return 0u; }  in ByteCount()
211   bool HadError() const override { return false; }  in HadError()