/*
    This file is part of TON Blockchain Library.

    TON Blockchain Library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 2 of the License, or
    (at your option) any later version.

    TON Blockchain Library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.

    Copyright 2017-2019 Telegram Systems LLP
*/
#pragma once

namespace td {

namespace detail {

template <class... Fs>
struct overload;

template <class F>
struct overload<F> : public F {
  explicit overload(F f) : F(f) {
  }
};

template <class F, class... Fs>
struct overload<F, Fs...>
    : public overload<F>
    , overload<Fs...> {
  overload(F f, Fs... fs) : overload<F>(f), overload<Fs...>(fs...) {
  }
  using overload<F>::operator();
  using overload<Fs...>::operator();
};

}  // namespace detail

template <class... F>
auto overloaded(F... f) {
  return detail::overload<F...>(f...);
}

}  // namespace td