32 enum class DecodeResult {  enum
57     virtual DecodeResult Decode(std::span<char>* output) = 0;
93     DecodeResult Decode(std::span<char>* output) final {  in Decode()
104             return finished_ ? DecodeResult::Done : DecodeResult::NeedInput;  in Decode()
106         return DecodeResult::MoreOutput;  in Decode()
142     DecodeResult Decode(std::span<char>* output) final {  in Decode()
161                 return finished_ ? DecodeResult::Done : DecodeResult::NeedInput;  in Decode()
163                 return DecodeResult::Error;  in Decode()
168                 return DecodeResult::NeedInput;  in Decode()
170                 return DecodeResult::MoreOutput;  in Decode()
246     DecodeResult Decode(std::span<char>* output) final {  in Decode()
257             return DecodeResult::Error;  in Decode()
265                 return DecodeResult::Error;  in Decode()
273             return input_buffer_.empty() && lz4_done_ ? DecodeResult::Done  in Decode()
274                                                       : DecodeResult::MoreOutput;  in Decode()
277         return DecodeResult::NeedInput;  in Decode()
394     DecodeResult Decode(std::span<char>* output) final {  in Decode()
410             return DecodeResult::Error;  in Decode()
417                 return DecodeResult::Error;  in Decode()
425             return input_buffer_.empty() && zstd_done_ ? DecodeResult::Done  in Decode()
426                                                        : DecodeResult::MoreOutput;  in Decode()
428         return DecodeResult::NeedInput;  in Decode()