std::unique_ptr Decoder::decode()

in hessian2/basic_codec/map_codec.cc [57:95]

• 32 lines of code
• 6 McCabe index (conditional complexity)

std::unique_ptr<UntypedMapObject> Decoder::decode() {
  std::string type;
  Object::UntypedMap obj_map;

  auto result = std::make_unique<UntypedMapObject>();
  values_ref_.push_back(result.get());
  auto ret = reader_->read<uint8_t>();
  ABSL_ASSERT(ret.first);
  auto code = ret.second;
  ABSL_ASSERT(code == 'H');

  ret = reader_->peek<uint8_t>();
  if (!ret.first) {
    return nullptr;
  }

  while (ret.second != 'Z') {
    auto key = decode<Object>();
    if (!key) {
      return nullptr;
    }

    auto value = decode<Object>();
    if (!value) {
      return nullptr;
    }

    obj_map.emplace(std::move(key), std::move(value));
    ret = reader_->peek<uint8_t>();
    if (!ret.first) {
      return nullptr;
    }
  }

  // Skip last 'Z'
  reader_->read<uint8_t>();
  result->setUntypedMap(std::move(obj_map));
  return result;
}