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venv/lib/python3.10/site-packages/pyarrow/include/arrow/extension/uuid.h

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+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#pragma once
+
+#include "arrow/extension_type.h"
+
+namespace arrow::extension {
+
+/// \brief UuidArray stores array of UUIDs. Underlying storage type is
+/// FixedSizeBinary(16).
+class ARROW_EXPORT UuidArray : public ExtensionArray {
+ public:
+  using ExtensionArray::ExtensionArray;
+};
+
+/// \brief UuidType is a canonical arrow extension type for UUIDs.
+/// UUIDs are stored as FixedSizeBinary(16) with big-endian notation and this
+/// does not interpret the bytes in any way. Specific UUID version is not
+/// required or guaranteed.
+class ARROW_EXPORT UuidType : public ExtensionType {
+ public:
+  /// \brief Construct a UuidType.
+  UuidType() : ExtensionType(fixed_size_binary(16)) {}
+
+  std::string extension_name() const override { return "arrow.uuid"; }
+  std::string ToString(bool show_metadata = false) const override;
+
+  bool ExtensionEquals(const ExtensionType& other) const override;
+
+  /// Create a UuidArray from ArrayData
+  std::shared_ptr<Array> MakeArray(std::shared_ptr<ArrayData> data) const override;
+
+  Result<std::shared_ptr<DataType>> Deserialize(
+      std::shared_ptr<DataType> storage_type,
+      const std::string& serialized) const override;
+
+  std::string Serialize() const override { return ""; }
+
+  /// \brief Create a UuidType instance
+  static Result<std::shared_ptr<DataType>> Make() { return std::make_shared<UuidType>(); }
+
+  static bool IsSupportedStorageType(const std::shared_ptr<DataType>& storage_type);
+};
+
+/// \brief Return a UuidType instance.
+ARROW_EXPORT std::shared_ptr<DataType> uuid();
+
+}  // namespace arrow::extension