mirror of
https://github.com/ThePhD/sol2.git
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37c3883eb6
now are usable as functions for userdata. allows free functions and lambdas to provide useful operations, like operator+*-/ and other things which may not be implemented as class members.
99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013 Danny Y., Rapptz
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_TUPLE_HPP
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#define SOL_TUPLE_HPP
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#include <tuple>
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#include <cstddef>
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namespace sol {
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template<typename... Ts>
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struct reverse_tuple;
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template<>
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struct reverse_tuple<std::tuple<>> {
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using type = std::tuple<>;
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};
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template<typename T, typename... Ts>
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struct reverse_tuple<std::tuple<T, Ts...>> {
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using head = std::tuple<T>;
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using tail = typename reverse_tuple<std::tuple<Ts...>>::type;
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using type = decltype(std::tuple_cat(std::declval<tail>(), std::declval<head>()));
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};
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template<size_t... Ns>
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struct indices { typedef indices type; };
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template<size_t N, size_t... Ns>
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struct build_indices : build_indices<N - 1, N - 1, Ns...> {};
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template<size_t... Ns>
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struct build_indices<0, Ns...> : indices<Ns...> {};
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template<size_t N, size_t... Ns>
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struct build_reverse_indices : build_reverse_indices<N - 1, Ns..., N - 1> {};
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template<size_t... Ns>
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struct build_reverse_indices<0, Ns...> : indices<Ns...> {};
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template<typename... Args>
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struct types : build_indices<sizeof...(Args)> { typedef types type; };
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namespace detail {
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template<class Acc, class... Args>
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struct reversed_ : Acc{};
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template<typename... RArgs, typename Arg, typename... Args>
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struct reversed_<types<RArgs...>, Arg, Args...> : reversed_<types<Arg, RArgs...>, Args...>{};
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template<typename Arg>
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struct chop_one : types<> {};
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template<typename Arg0, typename Arg1, typename... Args>
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struct chop_one<types<Arg0, Arg1, Args...>> : types<Arg1, Args...> {};
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template<typename Arg, typename... Args>
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struct chop_one<types<Arg, Args...>> : types<Args...> {};
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} // detail
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template<typename... Args>
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struct reversed : detail::reversed_<types<>, Args...>{};
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template<typename... Args>
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struct tuple_types : types<Args...> {};
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template<typename... Args>
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struct tuple_types<std::tuple<Args...>> : types<Args...> {};
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template<typename Arg>
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struct remove_one_type : detail::chop_one<Arg> {};
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template<typename... Tn>
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struct constructors {};
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const auto default_constructor = constructors<types<>>{};
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} // sol
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#endif // SOL_TUPLE_HPP
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