343 enum class FileStatus { Continue, Done, Error };  enum
345 FileStatus fileStatus(FILE* fd) {  in fileStatus()
347     return FileStatus::Done;  in fileStatus()
349     return FileStatus::Error;  in fileStatus()
351   return FileStatus::Continue;  in fileStatus()
360 static FileStatus
370     if (status != FileStatus::Continue) {  in readData()
374   return FileStatus::Continue;  in readData()
392   auto status = FileStatus::Continue;  in asyncCompressChunks()
393   while (status == FileStatus::Continue && !state.errorHolder.hasError()) {  in asyncCompressChunks()
410   state.errorHolder.check(status != FileStatus::Error, "Error reading input");  in asyncCompressChunks()
505   auto status = FileStatus::Continue;  in asyncDecompressFrames()
506   while (status == FileStatus::Continue && !state.errorHolder.hasError()) {  in asyncDecompressFrames()
521       if (bytesRead == 0 && status != FileStatus::Continue) {  in asyncDecompressFrames()
545       while (status == FileStatus::Continue && !state.errorHolder.hasError()) {  in asyncDecompressFrames()
554   state.errorHolder.check(status != FileStatus::Error, "Error reading input");  in asyncDecompressFrames()