Program Listing for File enable_self.hpp

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// Copyright 2025 Ekumen, Inc.
//
// 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 BELUGA_MIXINS_ENABLE_SELF_HPP
#define BELUGA_MIXINS_ENABLE_SELF_HPP

namespace beluga {


template <typename MostDerived>
struct enable_self {
  using self_type = MostDerived;

  [[nodiscard]] decltype(auto) self() & { return static_cast<self_type&>(*this); }

  [[nodiscard]] decltype(auto) self() && { return static_cast<self_type&&>(*this); }

  [[nodiscard]] decltype(auto) self() const& { return static_cast<const self_type&>(*this); }

  [[nodiscard]] decltype(auto) self() const&& { return static_cast<const self_type&&>(*this); }
};

}  // namespace beluga

#endif  // BELUGA_MIXINS_ENABLE_SELF_HPP