119     : mWritePointer(aWritePointer)  in Encoder()
128     return mWritePointer.WriteByte(kFlagSequence);  in BeginFrame()
137         VerifyOrExit(mWritePointer.CanWrite(2), error = OT_ERROR_NO_BUFS);  in Encode()
139         IgnoreReturnValue(mWritePointer.WriteByte(kEscapeSequence));  in Encode()
140         IgnoreReturnValue(mWritePointer.WriteByte(aByte ^ 0x20));  in Encode()
144         SuccessOrExit(error = mWritePointer.WriteByte(aByte));  in Encode()
157     Spinel::FrameWritePointer oldPointer = mWritePointer;  in Encode()
168         mWritePointer = oldPointer;  in Encode()
178     Spinel::FrameWritePointer oldPointer = mWritePointer;  in EndFrame()
187     SuccessOrExit(error = mWritePointer.WriteByte(kFlagSequence));  in EndFrame()
193         mWritePointer = oldPointer;  in EndFrame()
202     , mWritePointer(nullptr)  in Decoder()
212     mWritePointer = &aFrameWritePointer;  in Init()
262                         mWritePointer->UndoLastWrites(kFcsSize);  in Decode()
274                 if (mWritePointer->CanWrite(sizeof(uint8_t)))  in Decode()
277                     IgnoreReturnValue(mWritePointer->WriteByte(byte));  in Decode()
292             if (mWritePointer->CanWrite(sizeof(uint8_t)))  in Decode()
296                 IgnoreReturnValue(mWritePointer->WriteByte(byte));  in Decode()