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740 lines
25 KiB
C++
740 lines
25 KiB
C++
// sol2
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// The MIT License (MIT)
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// Copyright (c) 2013-2021 Rapptz, ThePhD and contributors
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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_TRAITS_HPP
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#define SOL_TRAITS_HPP
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#include <sol/tuple.hpp>
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#include <sol/bind_traits.hpp>
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#include <sol/pointer_like.hpp>
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#include <sol/base_traits.hpp>
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#include <sol/string_view.hpp>
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#include <type_traits>
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#include <cstdint>
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#include <memory>
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#include <functional>
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#include <array>
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#include <iterator>
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#include <iosfwd>
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#if SOL_IS_ON(SOL_STD_VARIANT_I_)
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#include <variant>
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#endif // variant is weird on XCode, thanks XCode
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namespace sol { namespace meta {
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template <typename T>
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struct unwrapped {
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typedef T type;
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};
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template <typename T>
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struct unwrapped<std::reference_wrapper<T>> {
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typedef T type;
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};
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template <typename T>
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using unwrapped_t = typename unwrapped<T>::type;
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template <typename T>
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struct unwrap_unqualified : unwrapped<unqualified_t<T>> { };
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template <typename T>
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using unwrap_unqualified_t = typename unwrap_unqualified<T>::type;
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template <typename T>
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struct remove_member_pointer;
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template <typename R, typename T>
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struct remove_member_pointer<R T::*> {
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typedef R type;
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};
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template <typename R, typename T>
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struct remove_member_pointer<R T::*const> {
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typedef R type;
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};
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template <typename T>
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using remove_member_pointer_t = remove_member_pointer<T>;
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template <typename T, typename...>
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struct all_same : std::true_type { };
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template <typename T, typename U, typename... Args>
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struct all_same<T, U, Args...> : std::integral_constant<bool, std::is_same<T, U>::value && all_same<T, Args...>::value> { };
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template <typename T, typename...>
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struct any_same : std::false_type { };
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template <typename T, typename U, typename... Args>
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struct any_same<T, U, Args...> : std::integral_constant<bool, std::is_same<T, U>::value || any_same<T, Args...>::value> { };
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template <typename T, typename... Args>
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constexpr inline bool any_same_v = any_same<T, Args...>::value;
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template <bool B>
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using boolean = std::integral_constant<bool, B>;
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template <bool B>
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constexpr inline bool boolean_v = boolean<B>::value;
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template <typename T>
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using neg = boolean<!T::value>;
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template <typename T>
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constexpr inline bool neg_v = neg<T>::value;
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template <typename... Args>
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struct all : boolean<true> { };
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template <typename T, typename... Args>
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struct all<T, Args...> : std::conditional_t<T::value, all<Args...>, boolean<false>> { };
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template <typename... Args>
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struct any : boolean<false> { };
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template <typename T, typename... Args>
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struct any<T, Args...> : std::conditional_t<T::value, boolean<true>, any<Args...>> { };
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template <typename... Args>
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constexpr inline bool all_v = all<Args...>::value;
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template <typename... Args>
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constexpr inline bool any_v = any<Args...>::value;
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enum class enable_t { _ };
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constexpr const auto enabler = enable_t::_;
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template <bool value, typename T = void>
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using disable_if_t = std::enable_if_t<!value, T>;
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template <typename... Args>
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using enable = std::enable_if_t<all<Args...>::value, enable_t>;
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template <typename... Args>
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using disable = std::enable_if_t<neg<all<Args...>>::value, enable_t>;
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template <typename... Args>
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using enable_any = std::enable_if_t<any<Args...>::value, enable_t>;
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template <typename... Args>
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using disable_any = std::enable_if_t<neg<any<Args...>>::value, enable_t>;
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template <typename V, typename... Vs>
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struct find_in_pack_v : boolean<false> { };
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template <typename V, typename Vs1, typename... Vs>
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struct find_in_pack_v<V, Vs1, Vs...> : any<boolean<(V::value == Vs1::value)>, find_in_pack_v<V, Vs...>> { };
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namespace meta_detail {
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template <std::size_t I, typename T, typename... Args>
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struct index_in_pack : std::integral_constant<std::size_t, SIZE_MAX> { };
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template <std::size_t I, typename T, typename T1, typename... Args>
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struct index_in_pack<I, T, T1, Args...>
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: conditional_t<std::is_same<T, T1>::value, std::integral_constant<std::ptrdiff_t, I>, index_in_pack<I + 1, T, Args...>> { };
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} // namespace meta_detail
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template <typename T, typename... Args>
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struct index_in_pack : meta_detail::index_in_pack<0, T, Args...> { };
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template <typename T, typename List>
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struct index_in : meta_detail::index_in_pack<0, T, List> { };
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template <typename T, typename... Args>
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struct index_in<T, types<Args...>> : meta_detail::index_in_pack<0, T, Args...> { };
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template <std::size_t I, typename... Args>
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struct at_in_pack { };
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template <std::size_t I, typename... Args>
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using at_in_pack_t = typename at_in_pack<I, Args...>::type;
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template <std::size_t I, typename Arg, typename... Args>
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struct at_in_pack<I, Arg, Args...> : std::conditional<I == 0, Arg, at_in_pack_t<I - 1, Args...>> { };
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template <typename Arg, typename... Args>
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struct at_in_pack<0, Arg, Args...> {
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typedef Arg type;
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};
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namespace meta_detail {
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template <typename, typename TI>
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using on_even = meta::boolean<(TI::value % 2) == 0>;
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template <typename, typename TI>
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using on_odd = meta::boolean<(TI::value % 2) == 1>;
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template <typename, typename>
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using on_always = std::true_type;
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template <template <typename...> class When, std::size_t Limit, std::size_t I, template <typename...> class Pred, typename... Ts>
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struct count_when_for_pack : std::integral_constant<std::size_t, 0> { };
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template <template <typename...> class When, std::size_t Limit, std::size_t I, template <typename...> class Pred, typename T, typename... Ts>
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struct count_when_for_pack<When, Limit, I, Pred, T, Ts...> : conditional_t < sizeof...(Ts)
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== 0
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|| Limit<2, std::integral_constant<std::size_t, I + static_cast<std::size_t>(Limit != 0 && Pred<T>::value)>,
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count_when_for_pack<When, Limit - static_cast<std::size_t>(When<T, std::integral_constant<std::size_t, I>>::value),
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I + static_cast<std::size_t>(When<T, std::integral_constant<std::size_t, I>>::value&& Pred<T>::value), Pred, Ts...>> { };
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} // namespace meta_detail
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template <template <typename...> class Pred, typename... Ts>
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struct count_for_pack : meta_detail::count_when_for_pack<meta_detail::on_always, sizeof...(Ts), 0, Pred, Ts...> { };
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template <template <typename...> class Pred, typename... Ts>
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inline constexpr std::size_t count_for_pack_v = count_for_pack<Pred, Ts...>::value;
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template <template <typename...> class Pred, typename List>
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struct count_for;
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template <template <typename...> class Pred, typename... Args>
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struct count_for<Pred, types<Args...>> : count_for_pack<Pred, Args...> { };
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template <std::size_t Limit, template <typename...> class Pred, typename... Ts>
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struct count_for_to_pack : meta_detail::count_when_for_pack<meta_detail::on_always, Limit, 0, Pred, Ts...> { };
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template <std::size_t Limit, template <typename...> class Pred, typename... Ts>
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inline constexpr std::size_t count_for_to_pack_v = count_for_to_pack<Limit, Pred, Ts...>::value;
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template <template <typename...> class When, std::size_t Limit, template <typename...> class Pred, typename... Ts>
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struct count_when_for_to_pack : meta_detail::count_when_for_pack<When, Limit, 0, Pred, Ts...> { };
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template <template <typename...> class When, std::size_t Limit, template <typename...> class Pred, typename... Ts>
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inline constexpr std::size_t count_when_for_to_pack_v = count_when_for_to_pack<When, Limit, Pred, Ts...>::value;
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template <template <typename...> class Pred, typename... Ts>
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using count_even_for_pack = count_when_for_to_pack<meta_detail::on_even, sizeof...(Ts), Pred, Ts...>;
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template <template <typename...> class Pred, typename... Ts>
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inline constexpr std::size_t count_even_for_pack_v = count_even_for_pack<Pred, Ts...>::value;
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template <template <typename...> class Pred, typename... Ts>
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using count_odd_for_pack = count_when_for_to_pack<meta_detail::on_odd, sizeof...(Ts), Pred, Ts...>;
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template <template <typename...> class Pred, typename... Ts>
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inline constexpr std::size_t count_odd_for_pack_v = count_odd_for_pack<Pred, Ts...>::value;
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template <typename... Args>
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struct return_type {
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typedef std::tuple<Args...> type;
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};
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template <typename T>
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struct return_type<T> {
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typedef T type;
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};
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template <>
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struct return_type<> {
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typedef void type;
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};
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template <typename... Args>
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using return_type_t = typename return_type<Args...>::type;
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namespace meta_detail {
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template <typename>
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struct always_true : std::true_type { };
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struct is_invokable_tester {
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template <typename Fun, typename... Args>
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static always_true<decltype(std::declval<Fun>()(std::declval<Args>()...))> test(int);
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template <typename...>
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static std::false_type test(...);
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};
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} // namespace meta_detail
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template <typename T>
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struct is_invokable;
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template <typename Fun, typename... Args>
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struct is_invokable<Fun(Args...)> : decltype(meta_detail::is_invokable_tester::test<Fun, Args...>(0)) { };
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namespace meta_detail {
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template <typename T, typename = void>
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struct is_invocable : std::is_function<std::remove_pointer_t<T>> { };
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template <typename T>
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struct is_invocable<T,
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std::enable_if_t<std::is_final<unqualified_t<T>>::value && std::is_class<unqualified_t<T>>::value
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&& std::is_same<decltype(void(&T::operator())), void>::value>> { };
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template <typename T>
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struct is_invocable<T,
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std::enable_if_t<!std::is_final<unqualified_t<T>>::value && std::is_class<unqualified_t<T>>::value
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&& std::is_destructible<unqualified_t<T>>::value>> {
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struct F {
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void operator()() {};
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};
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struct Derived : T, F { };
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template <typename U, U>
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struct Check;
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template <typename V>
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static sfinae_no_t test(Check<void (F::*)(), &V::operator()>*);
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template <typename>
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static sfinae_yes_t test(...);
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static constexpr bool value = std::is_same_v<decltype(test<Derived>(0)), sfinae_yes_t>;
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};
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template <typename T>
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struct is_invocable<T,
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std::enable_if_t<!std::is_final<unqualified_t<T>>::value && std::is_class<unqualified_t<T>>::value
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&& !std::is_destructible<unqualified_t<T>>::value>> {
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struct F {
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void operator()() {};
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};
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struct Derived : T, F {
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~Derived() = delete;
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};
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template <typename U, U>
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struct Check;
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template <typename V>
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static sfinae_no_t test(Check<void (F::*)(), &V::operator()>*);
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template <typename>
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static sfinae_yes_t test(...);
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static constexpr bool value = std::is_same_v<decltype(test<Derived>(0)), sfinae_yes_t>;
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};
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struct has_begin_end_impl {
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template <typename T, typename U = unqualified_t<T>, typename B = decltype(std::declval<U&>().begin()),
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typename E = decltype(std::declval<U&>().end())>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_key_type_impl {
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template <typename T, typename U = unqualified_t<T>, typename V = typename U::key_type>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_key_comp_impl {
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template <typename T, typename V = decltype(std::declval<unqualified_t<T>>().key_comp())>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_load_factor_impl {
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template <typename T, typename V = decltype(std::declval<unqualified_t<T>>().load_factor())>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_mapped_type_impl {
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template <typename T, typename V = typename unqualified_t<T>::mapped_type>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_value_type_impl {
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template <typename T, typename V = typename unqualified_t<T>::value_type>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_iterator_impl {
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template <typename T, typename V = typename unqualified_t<T>::iterator>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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struct has_key_value_pair_impl {
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template <typename T, typename U = unqualified_t<T>, typename V = typename U::value_type, typename F = decltype(std::declval<V&>().first),
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typename S = decltype(std::declval<V&>().second)>
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static std::true_type test(int);
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template <typename...>
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static std::false_type test(...);
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};
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template <typename T>
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struct has_push_back_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().push_back(std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
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template <typename C>
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static sfinae_no_t test(...);
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public:
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static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
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};
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template <typename T>
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struct has_insert_with_iterator_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().insert(
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std::declval<std::add_rvalue_reference_t<typename C::iterator>>(), std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
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template <typename C>
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static sfinae_no_t test(...);
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public:
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static constexpr bool value = !std::is_same_v<decltype(test<T>(0)), sfinae_no_t>;
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};
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template <typename T>
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struct has_insert_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().insert(std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
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template <typename C>
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static sfinae_no_t test(...);
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public:
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static constexpr bool value = !std::is_same_v<decltype(test<T>(0)), sfinae_no_t>;
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};
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template <typename T>
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struct has_insert_after_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().insert_after(std::declval<std::add_rvalue_reference_t<typename C::const_iterator>>(),
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std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
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template <typename C>
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static sfinae_no_t test(...);
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public:
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static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
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};
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template <typename T>
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struct has_size_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().size())*);
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template <typename C>
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static sfinae_no_t test(...);
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public:
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static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
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};
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template <typename T>
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struct has_max_size_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().max_size())*);
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template <typename C>
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static sfinae_no_t test(...);
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public:
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static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
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};
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template <typename T>
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struct has_to_string_test {
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private:
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template <typename C>
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static sfinae_yes_t test(decltype(std::declval<C>().to_string())*);
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template <typename C>
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static sfinae_no_t test(...);
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|
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public:
|
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static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
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};
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|
template <typename T, typename U, typename = void>
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class supports_op_less_test : public std::false_type { };
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template <typename T, typename U>
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class supports_op_less_test<T, U, void_t<decltype(std::declval<T&>() < std::declval<U&>())>>
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: public std::integral_constant<bool,
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|
#if SOL_IS_ON(SOL_STD_VARIANT_I_)
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!is_specialization_of_v<unqualified_t<T>, std::variant> && !is_specialization_of_v<unqualified_t<U>, std::variant>
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#else
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|
true
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#endif
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> {
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};
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|
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template <typename T, typename U, typename = void>
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class supports_op_equal_test : public std::false_type { };
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template <typename T, typename U>
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class supports_op_equal_test<T, U, void_t<decltype(std::declval<T&>() == std::declval<U&>())>>
|
|
: public std::integral_constant<bool,
|
|
#if SOL_IS_ON(SOL_STD_VARIANT_I_)
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|
!is_specialization_of_v<unqualified_t<T>, std::variant> && !is_specialization_of_v<unqualified_t<U>, std::variant>
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|
#else
|
|
true
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|
#endif
|
|
> {
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|
};
|
|
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|
template <typename T, typename U, typename = void>
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|
class supports_op_less_equal_test : public std::false_type { };
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template <typename T, typename U>
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|
class supports_op_less_equal_test<T, U, void_t<decltype(std::declval<T&>() <= std::declval<U&>())>>
|
|
: public std::integral_constant<bool,
|
|
#if SOL_IS_ON(SOL_STD_VARIANT_I_)
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|
!is_specialization_of_v<unqualified_t<T>, std::variant> && !is_specialization_of_v<unqualified_t<U>, std::variant>
|
|
#else
|
|
true
|
|
#endif
|
|
> {
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|
};
|
|
|
|
template <typename T, typename U, typename = void>
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|
class supports_op_left_shift_test : public std::false_type { };
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|
template <typename T, typename U>
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|
class supports_op_left_shift_test<T, U, void_t<decltype(std::declval<T&>() << std::declval<U&>())>> : public std::true_type { };
|
|
|
|
template <typename T, typename = void>
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|
class supports_adl_to_string_test : public std::false_type { };
|
|
template <typename T>
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|
class supports_adl_to_string_test<T, void_t<decltype(to_string(std::declval<const T&>()))>> : public std::true_type { };
|
|
|
|
template <typename T, bool b>
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|
struct is_matched_lookup_impl : std::false_type { };
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|
template <typename T>
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|
struct is_matched_lookup_impl<T, true> : std::is_same<typename T::key_type, typename T::value_type> { };
|
|
|
|
template <typename T>
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|
using non_void_t = meta::conditional_t<std::is_void_v<T>, ::sol::detail::unchecked_t, T>;
|
|
} // namespace meta_detail
|
|
|
|
template <typename T, typename U = T>
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|
class supports_op_less : public meta_detail::supports_op_less_test<T, U> { };
|
|
|
|
template <typename T, typename U = T>
|
|
class supports_op_equal : public meta_detail::supports_op_equal_test<T, U> { };
|
|
|
|
template <typename T, typename U = T>
|
|
class supports_op_less_equal : public meta_detail::supports_op_less_equal_test<T, U> { };
|
|
|
|
template <typename T, typename U = T>
|
|
class supports_op_left_shift : public meta_detail::supports_op_left_shift_test<T, U> { };
|
|
|
|
template <typename T>
|
|
class supports_adl_to_string : public meta_detail::supports_adl_to_string_test<T> { };
|
|
|
|
template <typename T>
|
|
class supports_to_string_member : public meta::boolean<meta_detail::has_to_string_test<meta_detail::non_void_t<T>>::value> { };
|
|
|
|
template <typename T>
|
|
using is_invocable = boolean<meta_detail::is_invocable<T>::value>;
|
|
|
|
template <typename T>
|
|
constexpr inline bool is_invocable_v = is_invocable<T>::value;
|
|
|
|
template <typename T>
|
|
struct has_begin_end : decltype(meta_detail::has_begin_end_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
constexpr inline bool has_begin_end_v = has_begin_end<T>::value;
|
|
|
|
template <typename T>
|
|
struct has_key_value_pair : decltype(meta_detail::has_key_value_pair_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
struct has_key_type : decltype(meta_detail::has_key_type_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
struct has_key_comp : decltype(meta_detail::has_key_comp_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
struct has_load_factor : decltype(meta_detail::has_load_factor_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
struct has_mapped_type : decltype(meta_detail::has_mapped_type_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
struct has_iterator : decltype(meta_detail::has_iterator_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
struct has_value_type : decltype(meta_detail::has_value_type_impl::test<T>(0)) { };
|
|
|
|
template <typename T>
|
|
using has_push_back = meta::boolean<meta_detail::has_push_back_test<T>::value>;
|
|
|
|
template <typename T>
|
|
using has_max_size = meta::boolean<meta_detail::has_max_size_test<T>::value>;
|
|
|
|
template <typename T>
|
|
using has_insert = meta::boolean<meta_detail::has_insert_test<T>::value>;
|
|
|
|
template <typename T>
|
|
using has_insert_with_iterator = meta::boolean<meta_detail::has_insert_with_iterator_test<T>::value>;
|
|
|
|
template <typename T>
|
|
using has_insert_after = meta::boolean<meta_detail::has_insert_after_test<T>::value>;
|
|
|
|
template <typename T>
|
|
using has_size = meta::boolean<meta_detail::has_size_test<T>::value>;
|
|
|
|
template <typename T>
|
|
using is_associative = meta::all<has_key_type<T>, has_key_value_pair<T>, has_mapped_type<T>>;
|
|
|
|
template <typename T>
|
|
using is_lookup = meta::all<has_key_type<T>, has_value_type<T>>;
|
|
|
|
template <typename T>
|
|
using is_ordered = meta::all<has_key_comp<T>, meta::neg<has_load_factor<T>>>;
|
|
|
|
template <typename T>
|
|
using is_matched_lookup = meta_detail::is_matched_lookup_impl<T, is_lookup<T>::value>;
|
|
|
|
template <typename T>
|
|
using is_initializer_list = meta::is_specialization_of<T, std::initializer_list>;
|
|
|
|
template <typename T>
|
|
constexpr inline bool is_initializer_list_v = is_initializer_list<T>::value;
|
|
|
|
template <typename T, typename CharT = char>
|
|
using is_string_literal_array_of = boolean<std::is_array_v<T> && std::is_same_v<std::remove_all_extents_t<T>, CharT>>;
|
|
|
|
template <typename T, typename CharT = char>
|
|
constexpr inline bool is_string_literal_array_of_v = is_string_literal_array_of<T, CharT>::value;
|
|
|
|
template <typename T>
|
|
using is_string_literal_array = boolean<std::is_array_v<T> && any_same_v<std::remove_all_extents_t<T>, char,
|
|
#if SOL_IS_ON(SOL_CHAR8_T_I_)
|
|
char8_t,
|
|
#endif
|
|
char16_t, char32_t, wchar_t>>;
|
|
|
|
template <typename T>
|
|
constexpr inline bool is_string_literal_array_v = is_string_literal_array<T>::value;
|
|
|
|
template <typename T, typename CharT>
|
|
struct is_string_of : std::false_type { };
|
|
|
|
template <typename CharT, typename CharTargetT, typename TraitsT, typename AllocT>
|
|
struct is_string_of<std::basic_string<CharT, TraitsT, AllocT>, CharTargetT> : std::is_same<CharT, CharTargetT> { };
|
|
|
|
template <typename T, typename CharT>
|
|
constexpr inline bool is_string_of_v = is_string_of<T, CharT>::value;
|
|
|
|
template <typename T, typename CharT>
|
|
struct is_string_view_of : std::false_type { };
|
|
|
|
template <typename CharT, typename CharTargetT, typename TraitsT>
|
|
struct is_string_view_of<std::basic_string_view<CharT, TraitsT>, CharTargetT> : std::is_same<CharT, CharTargetT> { };
|
|
|
|
template <typename T, typename CharT>
|
|
constexpr inline bool is_string_view_of_v = is_string_view_of<T, CharT>::value;
|
|
|
|
template <typename T>
|
|
using is_string_like
|
|
= meta::boolean<is_specialization_of_v<T, std::basic_string> || is_specialization_of_v<T, std::basic_string_view> || is_string_literal_array_v<T>>;
|
|
|
|
template <typename T>
|
|
constexpr inline bool is_string_like_v = is_string_like<T>::value;
|
|
|
|
template <typename T, typename CharT = char>
|
|
using is_string_constructible = meta::boolean<
|
|
is_string_literal_array_of_v<T,
|
|
CharT> || std::is_same_v<T, const CharT*> || std::is_same_v<T, CharT> || is_string_of_v<T, CharT> || std::is_same_v<T, std::initializer_list<CharT>> || is_string_view_of_v<T, CharT> || std::is_null_pointer_v<T>>;
|
|
|
|
template <typename T, typename CharT = char>
|
|
constexpr inline bool is_string_constructible_v = is_string_constructible<T, CharT>::value;
|
|
|
|
template <typename T>
|
|
using is_string_like_or_constructible = meta::boolean<is_string_like_v<T> || is_string_constructible_v<T>>;
|
|
|
|
template <typename T>
|
|
struct is_pair : std::false_type { };
|
|
|
|
template <typename T1, typename T2>
|
|
struct is_pair<std::pair<T1, T2>> : std::true_type { };
|
|
|
|
template <typename T, typename Char>
|
|
using is_c_str_of = any<std::is_same<T, const Char*>, std::is_same<T, Char const* const>, std::is_same<T, Char*>, is_string_literal_array_of<T, Char>>;
|
|
|
|
template <typename T, typename Char>
|
|
constexpr inline bool is_c_str_of_v = is_c_str_of<T, Char>::value;
|
|
|
|
template <typename T>
|
|
using is_c_str = is_c_str_of<T, char>;
|
|
|
|
template <typename T>
|
|
constexpr inline bool is_c_str_v = is_c_str<T>::value;
|
|
|
|
template <typename T, typename Char>
|
|
using is_c_str_or_string_of = any<is_c_str_of<T, Char>, is_string_of<T, Char>>;
|
|
|
|
template <typename T, typename Char>
|
|
constexpr inline bool is_c_str_or_string_of_v = is_c_str_or_string_of<T, Char>::value;
|
|
|
|
template <typename T>
|
|
using is_c_str_or_string = is_c_str_or_string_of<T, char>;
|
|
|
|
template <typename T>
|
|
constexpr inline bool is_c_str_or_string_v = is_c_str_or_string<T>::value;
|
|
|
|
template <typename T>
|
|
struct is_move_only : all<neg<std::is_reference<T>>, neg<std::is_copy_constructible<unqualified_t<T>>>, std::is_move_constructible<unqualified_t<T>>> { };
|
|
|
|
template <typename T>
|
|
using is_not_move_only = neg<is_move_only<T>>;
|
|
|
|
namespace meta_detail {
|
|
template <typename T>
|
|
decltype(auto) force_tuple(T&& x) {
|
|
if constexpr (meta::is_specialization_of_v<meta::unqualified_t<T>, std::tuple>) {
|
|
return std::forward<T>(x);
|
|
}
|
|
else {
|
|
return std::tuple<T>(std::forward<T>(x));
|
|
}
|
|
}
|
|
} // namespace meta_detail
|
|
|
|
template <typename... X>
|
|
decltype(auto) tuplefy(X&&... x) {
|
|
return std::tuple_cat(meta_detail::force_tuple(std::forward<X>(x))...);
|
|
}
|
|
|
|
template <typename T, typename = void>
|
|
struct iterator_tag {
|
|
using type = std::input_iterator_tag;
|
|
};
|
|
|
|
template <typename T>
|
|
struct iterator_tag<T, conditional_t<false, typename std::iterator_traits<T>::iterator_category, void>> {
|
|
using type = typename std::iterator_traits<T>::iterator_category;
|
|
};
|
|
|
|
}} // namespace sol::meta
|
|
|
|
#endif // SOL_TRAITS_HPP
|