Function resolveRootSerializer

integration_tests/idl_tests/javascript/roundtrip.ts:127–162

(fory: Fory, bytes: Uint8Array)

}

function resolveRootSerializer(fory: Fory, bytes: Uint8Array): Serializer {
  fory.readContext.reset(bytes);
  const reader = fory.readContext.reader;
  const bitmap = reader.readUint8();
  const supportedBitmap =
    ConfigFlags.isCrossLanguageFlag | ConfigFlags.isOutOfBandFlag;
  if ((bitmap & ~supportedBitmap) !== 0) {
    throw new Error("unsupported root header bitmap");
  }
  if (
    (bitmap & ConfigFlags.isCrossLanguageFlag) !==
    ConfigFlags.isCrossLanguageFlag
  ) {
    throw new Error("support crosslanguage mode only");
  }
  if ((bitmap & ConfigFlags.isOutOfBandFlag) === ConfigFlags.isOutOfBandFlag) {
    throw new Error("outofband mode is not supported now");
  }
  const refFlag = fory.readContext.readRefFlag();
  if (refFlag === RefFlags.NullFlag) {
    throw new Error("IDL roundtrip does not support null root payloads");
  }
  if (refFlag === RefFlags.RefFlag) {
    throw new Error("IDL roundtrip root payload must not be a back reference");
  }
  // Generated JS IDL outputs are plain interfaces, so generic serialize(value)
  // cannot rediscover the root struct serializer. Reuse the runtime's existing
  // serializer detection from the payload, then map back to the local
  // registered serializer when available.
  const detectedSerializer = AnyHelper.detectSerializer(fory.readContext);
  const resolvedSerializer =
    fory.typeResolver.getSerializerByTypeInfo(
      detectedSerializer.getTypeInfo(),
    ) ?? detectedSerializer;
  return resolvedSerializer;
}

function runFileRoundTrip<T>(
  envVar: string,