class Deserializer:
__codec_cache: CodecCache
__reader: ByteIo
def __init__(self, codec_cache: CodecCache, reader: BinaryIO):
super().__init__()
self.__codec_cache = codec_cache
self.__reader = ByteIo(reader)
def read(self, codec: None or Codec[T] = None) -> T:
if codec is not None:
return codec.read(self.__reader)
found: Codec = self.__codec_cache.get(self.__reader.peek())
return found.read(self.__reader)
def close(self) -> None:
self.__reader.close()
class Serializer:
__codec_cache: CodecCache
__writer: ByteIo
def __init__(self, codec_cache: CodecCache, writer: BinaryIO):
super().__init__()
self.__codec_cache = codec_cache
self.__writer = ByteIo(writer)
def append(self, value: T, codec: None or Codec[T]) -> None:
if codec is not None:
codec.write(self.__writer, value)
return
codec: Codec[T] = self.__codec_cache.codec_for(value)
if codec is None:
raise ValueError(f"Missing codec for {type(value)}")
codec.write(self.__writer, value)
def close(self) -> None:
self.__writer.close()