// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef GOOGLE_PROTOBUF_PYTHON_CPP_DESCRIPTOR_DATABASE_H__
#define GOOGLE_PROTOBUF_PYTHON_CPP_DESCRIPTOR_DATABASE_H__

#define PY_SSIZE_T_CLEAN
#include <Python.h>

#include <google/protobuf/descriptor_database.h>

namespace google {
namespace protobuf {
namespace python {

class PyDescriptorDatabase : public DescriptorDatabase {
 public:
  explicit PyDescriptorDatabase(PyObject* py_database);
  ~PyDescriptorDatabase() override;

  // Implement the abstract interface. All these functions fill the output
  // with a copy of FileDescriptorProto.

  // Find a file by file name.
  bool FindFileByName(const std::string& filename,
                      FileDescriptorProto* output) override;

  // Find the file that declares the given fully-qualified symbol name.
  bool FindFileContainingSymbol(const std::string& symbol_name,
                                FileDescriptorProto* output) override;

  // Find the file which defines an extension extending the given message type
  // with the given field number.
  // Containing_type must be a fully-qualified type name.
  // Python objects are not required to implement this method.
  bool FindFileContainingExtension(const std::string& containing_type,
                                   int field_number,
                                   FileDescriptorProto* output) override;

  // Finds the tag numbers used by all known extensions of
  // containing_type, and appends them to output in an undefined
  // order.
  // Python objects are not required to implement this method.
  bool FindAllExtensionNumbers(const std::string& containing_type,
                               std::vector<int>* output) override;

 private:
  // The python object that implements the database. The reference is owned.
  PyObject* py_database_;
};

}  // namespace python
}  // namespace protobuf
}  // namespace google

#endif  // GOOGLE_PROTOBUF_PYTHON_CPP_DESCRIPTOR_DATABASE_H__