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/*
 * Copyright (C) 2019 Open Source Robotics Foundation
 *
 * 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 RMF_UTILS__OPTIONAL_HPP
#define RMF_UTILS__OPTIONAL_HPP

#include <optional>

namespace rmf_utils {

template<typename T>
using optional = std::optional<T>;

inline constexpr std::nullopt_t nullopt{std::nullopt};

template<typename T>
std::optional<T> pointer_to_opt(const T* const ptr)
{
  if (ptr)
    return *ptr;

  return std::nullopt;
}

} // namespace rmf_utils

#endif // RMF_UTILS__OPTIONAL_HPP