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py_descriptor_database.h

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py_descriptor_database.h

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/*
* Copyright 2025 Google LLC
*
* 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
*
* 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.
*/
#ifndef THIRD_PARTY_CEL_PYTHON_PY_DESCRIPTOR_DATABASE_H_
#define THIRD_PARTY_CEL_PYTHON_PY_DESCRIPTOR_DATABASE_H_
#include <Python.h> // IWYU pragma: keep - Needed for PyObject
#include <string_view> // IWYU pragma: keep - Needed for string_view in OSS
#include "google/protobuf/descriptor.pb.h"
#include "google/protobuf/descriptor_database.h"
namespace cel_python {
// A DescriptorDatabase that uses a Python DescriptorPool to find descriptors.
class PyDescriptorDatabase : public google::protobuf::DescriptorDatabase {
private:
using StringViewArg = std::string_view;
public:
explicit PyDescriptorDatabase(PyObject* py_descriptor_pool);
~PyDescriptorDatabase() override;
bool FindFileByName(StringViewArg filename,
google::protobuf::FileDescriptorProto* output) override;
bool FindFileContainingSymbol(StringViewArg symbol_name,
google::protobuf::FileDescriptorProto* output) override;
bool FindFileContainingExtension(
StringViewArg containing_type, int field_number,
google::protobuf::FileDescriptorProto* output) override;
private:
PyObject* py_descriptor_pool_;
google::protobuf::DescriptorPool standard_pool_;
};
} // namespace cel_python
#endif // THIRD_PARTY_CEL_PYTHON_PY_DESCRIPTOR_DATABASE_H_
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