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// Licensed 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

// https://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.

#ifndef THIRD_PARTY_CEL_PYTHON_PY_CEL_ARENA_H_

#define THIRD_PARTY_CEL_PYTHON_PY_CEL_ARENA_H_

#include <memory>

#include "absl/status/statusor.h"

#include "google/protobuf/arena.h"

#include <pybind11/pybind11.h>

namespace cel_python {

// Internal class. All implementation details are private. Use `py_cel.Arena()`

// to obtain an instance

class PyCelArena {

public:

static void DefinePythonBindings(pybind11::module& m);

~PyCelArena();

// Visible for testing

static int GetInstanceCount();

google::protobuf::Arena* GetArena() { return &arena_; };

static absl::StatusOr<std::shared_ptr<PyCelArena>> FromProtoArena(

google::protobuf::Arena* proto_arena);

friend std::shared_ptr<PyCelArena> NewArena();

private:

// Private constructor. Use `NewArena()` to obtain an instance.

PyCelArena();

google::protobuf::Arena arena_;

};

std::shared_ptr<PyCelArena> NewArena();

} // namespace cel_python

#endif // THIRD_PARTY_CEL_PYTHON_PY_CEL_ARENA_H_