// Copyright 2017 Google Inc. All rights reserved.

//

// 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 PORT_PROTOBUF_H_

#define PORT_PROTOBUF_H_

#include <string>

#include "google/protobuf/any.pb.h"

#include "google/protobuf/descriptor.pb.h"

#include "google/protobuf/message.h"

#include "google/protobuf/stubs/common.h"  // for GOOGLE_PROTOBUF_VERSION

#include "google/protobuf/text_format.h"

#include "google/protobuf/util/message_differencer.h"

#include "google/protobuf/wire_format.h"

namespace google {

namespace protobuf {

#if GOOGLE_PROTOBUF_VERSION < 4025000

template <typename T>

const T* DownCastMessage(const Message* message) {

  return static_cast<const T*>(message);

}

template <typename T>

T* DownCastMessage(Message* message) {

  const Message* message_const = message;

  return const_cast<T*>(DownCastMessage<T>(message_const));

}

#elif GOOGLE_PROTOBUF_VERSION < 5029000

template <typename T>

const T* DownCastMessage(const Message* message) {

  return DownCastToGenerated<T>(message);

}

template <typename T>

T* DownCastMessage(Message* message) {

  return DownCastToGenerated<T>(message);

}

#endif  // GOOGLE_PROTOBUF_VERSION

}  // namespace protobuf

}  // namespace google

namespace protobuf_mutator {

namespace protobuf = google::protobuf;

inline bool RequiresUtf8Validation(

    const google::protobuf::FieldDescriptor& descriptor) {

  // commit d85c9944c55fb38f4eae149979a0f680ea125ecb of >= v3(!).22.0

#if GOOGLE_PROTOBUF_VERSION >= 4022000

  return descriptor.requires_utf8_validation();

#else

  return descriptor.type() == google::protobuf::FieldDescriptor::TYPE_STRING &&

         descriptor.file()->syntax() ==

             google::protobuf::FileDescriptor::SYNTAX_PROTO3;

#endif

}

inline bool HasPresence(const google::protobuf::FieldDescriptor& descriptor) {

  // commit bb30225f06c36399757dc698b409d5f79738e8d1 of >=3.12.0

#if GOOGLE_PROTOBUF_VERSION >= 3012000

  return descriptor.has_presence();

#else

  // NOTE: This mimics Protobuf 3.21.12 ("3021012")

  return !descriptor.is_repeated() &&

         (descriptor.cpp_type() ==

              google::protobuf::FieldDescriptor::CppType::CPPTYPE_MESSAGE ||

          descriptor.containing_oneof() ||

          descriptor.file()->syntax() ==

              google::protobuf::FileDescriptor::SYNTAX_PROTO2);

#endif

}

inline void PrepareTextParser(google::protobuf::TextFormat::Parser& parser) {

  // commit d8c2501b43c1b56e3efa74048a18f8ce06ba07fe of >=3.8.0 for .SetRecursionLimit

  // commit 176f7db11d8242b36a3ea6abb1cc436fca5bf75d of >=3.8.0 for .AllowUnknownField

#if GOOGLE_PROTOBUF_VERSION >= 3008000

  parser.SetRecursionLimit(100);

  parser.AllowUnknownField(true);

#endif

}

constexpr bool TextParserCanSetRecursionLimit() {

  // commit d8c2501b43c1b56e3efa74048a18f8ce06ba07fe of >=3.8.0

  return GOOGLE_PROTOBUF_VERSION >= 3008000;

}

constexpr bool TextParserCanAllowUnknownField() {

  // commit 176f7db11d8242b36a3ea6abb1cc436fca5bf75d of >=3.8.0

  return GOOGLE_PROTOBUF_VERSION >= 3008000;

}

}  // namespace protobuf_mutator

#endif  // PORT_PROTOBUF_H_