values[i] = static_cast<c_type>(attr->list().list_field(i));           \
    }                                                                        \
  }
DEFINE_GETATTR(TF_OperationGetAttrInt, int64_t, int64_t, i);
DEFINE_GETATTR(TF_OperationGetAttrFloat, float, float, f);
DEFINE_GETATTR(TF_OperationGetAttrBool, unsigned char, bool, b);
DEFINE_GETATTR(TF_OperationGetAttrType, TF_DataType, DataType, type);