Method FromClass

python/pyarrow/src/arrow/python/extension_type.cc:200–206

}

Status PyExtensionType::FromClass(const std::shared_ptr<DataType> storage_type,
                                  const std::string extension_name, PyObject* typ,
                                  std::shared_ptr<ExtensionType>* out) {
  Py_INCREF(typ);
  out->reset(new PyExtensionType(storage_type, std::move(extension_name), typ));
  return Status::OK();
}

Status RegisterPyExtensionType(const std::shared_ptr<DataType>& type) {
  ARROW_DCHECK_EQ(type->id(), Type::EXTENSION);