// Copyright 2023 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

//

//     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_CPP_RUNTIME_INTERNAL_RUNTIME_FRIEND_ACCESS_H_

#define THIRD_PARTY_CEL_CPP_RUNTIME_INTERNAL_RUNTIME_FRIEND_ACCESS_H_

#include "common/native_type.h"

#include "runtime/runtime.h"

#include "runtime/runtime_builder.h"

namespace cel::runtime_internal {

// Provide accessors for friend-visibility internal runtime details.

//

// CEL supported runtime extensions need implementation specific details to work

// correctly. We restrict access to prevent external usages since we don't

// guarantee stability on the implementation details.

class RuntimeFriendAccess {

 public:

  // Access underlying runtime instance.

  static Runtime& GetMutableRuntime(RuntimeBuilder& builder) {

    return builder.runtime();

  }

  // Return the internal type_id for the runtime instance for checked down

  // casting.

  static NativeTypeId RuntimeTypeId(Runtime& runtime) {

    return runtime.GetNativeTypeId();

  }

};

}  // namespace cel::runtime_internal

#endif  // THIRD_PARTY_CEL_CPP_EXTENSIONS_RUNTIME_EXTENSIONS_FRIEND_ACCESS_H_