FieldValue Converter::ConvertAny()

in blogs/sept-2021/converter.cc [106:142]

• 25 lines of code
• 12 McCabe index (conditional complexity)

FieldValue Converter::ConvertAny(const Variant& from, bool within_array) const {
  switch (from.type()) {
      // Primitives -- one-to-one mapping.

    case Variant::Type::kTypeNull:
      return FieldValue::Null();
    case Variant::Type::kTypeBool:
      return FieldValue::Boolean(from.bool_value());
    case Variant::Type::kTypeInt64:
      return FieldValue::Integer(from.int64_value());
    case Variant::Type::kTypeDouble:
      return FieldValue::Double(from.double_value());

      // Firestore does not have a distinction between static and mutable
      // strings and blobs. In all cases, the resulting `FieldValue` has
      // ownership of the underlying string or blob.

    case Variant::Type::kTypeStaticString:
    case Variant::Type::kTypeMutableString:
      return FieldValue::String(from.string_value());

    case Variant::Type::kTypeStaticBlob:
    case Variant::Type::kTypeMutableBlob:
      return FieldValue::Blob(from.blob_data(), from.blob_size());

      // Containers are converted recursively.

    case Variant::Type::kTypeVector:
      return ConvertArray(from.vector(), within_array);
    case Variant::Type::kTypeMap:
      return ConvertMap(from.map());

    default:
      assert(false && "Unknown Variant type");
      std::terminate();
  }
}