sol2/include/sol/overload.hpp

// sol2

// The MIT License (MIT)

// Copyright (c) 2013-2021 Rapptz, ThePhD and contributors

// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:

// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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#ifndef SOL_OVERLOAD_HPP
#define SOL_OVERLOAD_HPP

#include <sol/traits.hpp>
#include <utility>

namespace sol {
	template <typename... Functions>
	struct overload_set {
		std::tuple<Functions...> functions;
		template <typename Arg, typename... Args, meta::disable<std::is_same<overload_set, meta::unqualified_t<Arg>>> = meta::enabler>
		overload_set(Arg&& arg, Args&&... args) : functions(std::forward<Arg>(arg), std::forward<Args>(args)...) {
		}
		overload_set(const overload_set&) = default;
		overload_set(overload_set&&) = default;
		overload_set& operator=(const overload_set&) = default;
		overload_set& operator=(overload_set&&) = default;
	};

	template <typename... Args>
	decltype(auto) overload(Args&&... args) {
		return overload_set<std::decay_t<Args>...>(std::forward<Args>(args)...);
	}
} // namespace sol

#endif // SOL_OVERLOAD_HPP