remove sol2 (will re-add as submodule)

1 files changed, 0 insertions, 708 deletions

diff --git a/lib/sol2/include/sol/traits.hpp b/lib/sol2/include/sol/traits.hpp
deleted file mode 100644
index b47fdc9..0000000
--- a/lib/sol2/include/sol/traits.hpp
+++ /dev/null
@@ -1,708 +0,0 @@
-// sol3
-
-// The MIT License (MIT)
-
-// Copyright (c) 2013-2019 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
-// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-#ifndef SOL_TRAITS_HPP
-#define SOL_TRAITS_HPP
-
-#include "tuple.hpp"
-#include "bind_traits.hpp"
-#include "pointer_like.hpp"
-#include "base_traits.hpp"
-#include "string_view.hpp"
-
-#include <type_traits>
-#include <cstdint>
-#include <memory>
-#include <functional>
-#include <array>
-#include <iterator>
-#include <iosfwd>
-
-
-namespace sol {
-	namespace meta {
-		template <typename T>
-		struct unwrapped {
-			typedef T type;
-		};
-
-		template <typename T>
-		struct unwrapped<std::reference_wrapper<T>> {
-			typedef T type;
-		};
-
-		template <typename T>
-		using unwrapped_t = typename unwrapped<T>::type;
-
-		template <typename T>
-		struct unwrap_unqualified : unwrapped<unqualified_t<T>> {};
-
-		template <typename T>
-		using unwrap_unqualified_t = typename unwrap_unqualified<T>::type;
-
-		template <typename T>
-		struct remove_member_pointer;
-
-		template <typename R, typename T>
-		struct remove_member_pointer<R T::*> {
-			typedef R type;
-		};
-
-		template <typename R, typename T>
-		struct remove_member_pointer<R T::*const> {
-			typedef R type;
-		};
-
-		template <typename T>
-		using remove_member_pointer_t = remove_member_pointer<T>;
-
-		template <typename T, typename...>
-		struct all_same : std::true_type {};
-
-		template <typename T, typename U, typename... Args>
-		struct all_same<T, U, Args...> : std::integral_constant<bool, std::is_same<T, U>::value && all_same<T, Args...>::value> {};
-
-		template <typename T, typename...>
-		struct any_same : std::false_type {};
-
-		template <typename T, typename U, typename... Args>
-		struct any_same<T, U, Args...> : std::integral_constant<bool, std::is_same<T, U>::value || any_same<T, Args...>::value> {};
-
-		template <typename T, typename... Args>
-		constexpr inline bool any_same_v = any_same<T, Args...>::value;
-
-		template <bool B>
-		using boolean = std::integral_constant<bool, B>;
-
-		template <bool B>
-		constexpr inline bool boolean_v = boolean<B>::value;
-
-		template <typename T>
-		using neg = boolean<!T::value>;
-
-		template <typename T>
-		constexpr inline bool neg_v = neg<T>::value;
-
-		template <typename... Args>
-		struct all : boolean<true> {};
-
-		template <typename T, typename... Args>
-		struct all<T, Args...> : std::conditional_t<T::value, all<Args...>, boolean<false>> {};
-
-		template <typename... Args>
-		struct any : boolean<false> {};
-
-		template <typename T, typename... Args>
-		struct any<T, Args...> : std::conditional_t<T::value, boolean<true>, any<Args...>> {};
-
-		template <typename T, typename... Args>
-		constexpr inline bool all_v = all<T, Args...>::value;
-
-		template <typename T, typename... Args>
-		constexpr inline bool any_v = any<T, Args...>::value;
-
-		enum class enable_t { _ };
-
-		constexpr const auto enabler = enable_t::_;
-
-		template <bool value, typename T = void>
-		using disable_if_t = std::enable_if_t<!value, T>;
-
-		template <typename... Args>
-		using enable = std::enable_if_t<all<Args...>::value, enable_t>;
-
-		template <typename... Args>
-		using disable = std::enable_if_t<neg<all<Args...>>::value, enable_t>;
-
-		template <typename... Args>
-		using enable_any = std::enable_if_t<any<Args...>::value, enable_t>;
-
-		template <typename... Args>
-		using disable_any = std::enable_if_t<neg<any<Args...>>::value, enable_t>;
-
-		template <typename V, typename... Vs>
-		struct find_in_pack_v : boolean<false> {};
-
-		template <typename V, typename Vs1, typename... Vs>
-		struct find_in_pack_v<V, Vs1, Vs...> : any<boolean<(V::value == Vs1::value)>, find_in_pack_v<V, Vs...>> {};
-
-		namespace meta_detail {
-			template <std::size_t I, typename T, typename... Args>
-			struct index_in_pack : std::integral_constant<std::size_t, SIZE_MAX> {};
-
-			template <std::size_t I, typename T, typename T1, typename... Args>
-			struct index_in_pack<I, T, T1, Args...>
-			: conditional_t<std::is_same<T, T1>::value, std::integral_constant<std::ptrdiff_t, I>, index_in_pack<I + 1, T, Args...>> {};
-		} // namespace meta_detail
-
-		template <typename T, typename... Args>
-		struct index_in_pack : meta_detail::index_in_pack<0, T, Args...> {};
-
-		template <typename T, typename List>
-		struct index_in : meta_detail::index_in_pack<0, T, List> {};
-
-		template <typename T, typename... Args>
-		struct index_in<T, types<Args...>> : meta_detail::index_in_pack<0, T, Args...> {};
-
-		template <std::size_t I, typename... Args>
-		struct at_in_pack {};
-
-		template <std::size_t I, typename... Args>
-		using at_in_pack_t = typename at_in_pack<I, Args...>::type;
-
-		template <std::size_t I, typename Arg, typename... Args>
-		struct at_in_pack<I, Arg, Args...> : std::conditional<I == 0, Arg, at_in_pack_t<I - 1, Args...>> {};
-
-		template <typename Arg, typename... Args>
-		struct at_in_pack<0, Arg, Args...> {
-			typedef Arg type;
-		};
-
-		namespace meta_detail {
-			template <typename, typename TI>
-			using on_even = meta::boolean<(TI::value % 2) == 0>;
-
-			template <typename, typename TI>
-			using on_odd = meta::boolean<(TI::value % 2) == 1>;
-
-			template <typename, typename>
-			using on_always = std::true_type;
-
-			template <template <typename...> class When, std::size_t Limit, std::size_t I, template <typename...> class Pred, typename... Ts>
-			struct count_when_for_pack : std::integral_constant<std::size_t, 0> {};
-			template <template <typename...> class When, std::size_t Limit, std::size_t I, template <typename...> class Pred, typename T, typename... Ts>
-			struct count_when_for_pack<When, Limit, I, Pred, T, Ts...> : conditional_t<
-				sizeof...(Ts) == 0 || Limit < 2,
-					std::integral_constant<std::size_t, I + static_cast<std::size_t>(Limit != 0 && Pred<T>::value)>,
-			     	count_when_for_pack<When, Limit - static_cast<std::size_t>(When<T, std::integral_constant<std::size_t, I>>::value), I + static_cast<std::size_t>(When<T, std::integral_constant<std::size_t, I>>::value && Pred<T>::value), Pred, Ts...>
-			> {};
-		} // namespace meta_detail
-
-		template <template <typename...> class Pred, typename... Ts>
-		struct count_for_pack : meta_detail::count_when_for_pack<meta_detail::on_always, sizeof...(Ts), 0, Pred, Ts...> {};
-
-		template <template <typename...> class Pred, typename... Ts>
-		inline constexpr std::size_t count_for_pack_v = count_for_pack<Pred, Ts...>::value;
-
-		template <template <typename...> class Pred, typename List>
-		struct count_for;
-
-		template <template <typename...> class Pred, typename... Args>
-		struct count_for<Pred, types<Args...>> : count_for_pack<Pred, Args...> {};
-
-		template <std::size_t Limit, template <typename...> class Pred, typename... Ts>
-		struct count_for_to_pack : meta_detail::count_when_for_pack<meta_detail::on_always, Limit, 0, Pred, Ts...> {};
-
-		template <std::size_t Limit, template <typename...> class Pred, typename... Ts>
-		inline constexpr std::size_t count_for_to_pack_v = count_for_to_pack<Limit, Pred, Ts...>::value;
-
-		template <template <typename...> class When, std::size_t Limit, template <typename...> class Pred, typename... Ts>
-		struct count_when_for_to_pack : meta_detail::count_when_for_pack<When, Limit, 0, Pred, Ts...> {};
-
-		template <template <typename...> class When, std::size_t Limit, template <typename...> class Pred, typename... Ts>
-		inline constexpr std::size_t count_when_for_to_pack_v = count_when_for_to_pack<When, Limit, Pred, Ts...>::value;
-
-		template <template <typename...> class Pred, typename... Ts>
-		using count_even_for_pack = count_when_for_to_pack<meta_detail::on_even, sizeof...(Ts), Pred, Ts...>;
-
-		template <template <typename...> class Pred, typename... Ts>
-		inline constexpr std::size_t count_even_for_pack_v = count_even_for_pack<Pred, Ts...>::value;
-
-		template <template <typename...> class Pred, typename... Ts>
-		using count_odd_for_pack = count_when_for_to_pack<meta_detail::on_odd, sizeof...(Ts), Pred, Ts...>;
-
-		template <template <typename...> class Pred, typename... Ts>
-		inline constexpr std::size_t count_odd_for_pack_v = count_odd_for_pack<Pred, Ts...>::value;
-
-		template <typename... Args>
-		struct return_type {
-			typedef std::tuple<Args...> type;
-		};
-
-		template <typename T>
-		struct return_type<T> {
-			typedef T type;
-		};
-
-		template <>
-		struct return_type<> {
-			typedef void type;
-		};
-
-		template <typename... Args>
-		using return_type_t = typename return_type<Args...>::type;
-
-		namespace meta_detail {
-			template <typename>
-			struct always_true : std::true_type {};
-			struct is_invokable_tester {
-				template <typename Fun, typename... Args>
-				static always_true<decltype(std::declval<Fun>()(std::declval<Args>()...))> test(int);
-				template <typename...>
-				static std::false_type test(...);
-			};
-		} // namespace meta_detail
-
-		template <typename T>
-		struct is_invokable;
-		template <typename Fun, typename... Args>
-		struct is_invokable<Fun(Args...)> : decltype(meta_detail::is_invokable_tester::test<Fun, Args...>(0)) {};
-
-		namespace meta_detail {
-
-			template <typename T, typename = void>
-			struct is_callable : std::is_function<std::remove_pointer_t<T>> {};
-
-			template <typename T>
-			struct is_callable<T,
-			     std::enable_if_t<std::is_final<unqualified_t<T>>::value && std::is_class<unqualified_t<T>>::value
-			          && std::is_same<decltype(void(&T::operator())), void>::value>> {};
-
-			template <typename T>
-			struct is_callable<T,
-			     std::enable_if_t<!std::is_final<unqualified_t<T>>::value && std::is_class<unqualified_t<T>>::value
-			          && std::is_destructible<unqualified_t<T>>::value>> {
-				struct F {
-					void operator()() {};
-				};
-				struct Derived : T, F {};
-				template <typename U, U>
-				struct Check;
-
-				template <typename V>
-				static sfinae_no_t test(Check<void (F::*)(), &V::operator()>*);
-
-				template <typename>
-				static sfinae_yes_t test(...);
-
-				static constexpr bool value = std::is_same_v<decltype(test<Derived>(0)), sfinae_yes_t>;
-			};
-
-			template <typename T>
-			struct is_callable<T,
-			     std::enable_if_t<!std::is_final<unqualified_t<T>>::value && std::is_class<unqualified_t<T>>::value
-			          && !std::is_destructible<unqualified_t<T>>::value>> {
-				struct F {
-					void operator()() {};
-				};
-				struct Derived : T, F {
-					~Derived() = delete;
-				};
-				template <typename U, U>
-				struct Check;
-
-				template <typename V>
-				static sfinae_no_t test(Check<void (F::*)(), &V::operator()>*);
-
-				template <typename>
-				static sfinae_yes_t test(...);
-
-				static constexpr bool value = std::is_same_v<decltype(test<Derived>(0)), sfinae_yes_t>;
-			};
-
-			struct has_begin_end_impl {
-				template <typename T, typename U = unqualified_t<T>, typename B = decltype(std::declval<U&>().begin()),
-				     typename E = decltype(std::declval<U&>().end())>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_key_type_impl {
-				template <typename T, typename U = unqualified_t<T>, typename V = typename U::key_type>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_key_comp_impl {
-				template <typename T, typename V = decltype(std::declval<unqualified_t<T>>().key_comp())>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_load_factor_impl {
-				template <typename T, typename V = decltype(std::declval<unqualified_t<T>>().load_factor())>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_mapped_type_impl {
-				template <typename T, typename V = typename unqualified_t<T>::mapped_type>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_value_type_impl {
-				template <typename T, typename V = typename unqualified_t<T>::value_type>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_iterator_impl {
-				template <typename T, typename V = typename unqualified_t<T>::iterator>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			struct has_key_value_pair_impl {
-				template <typename T, typename U = unqualified_t<T>, typename V = typename U::value_type, typename F = decltype(std::declval<V&>().first),
-				     typename S = decltype(std::declval<V&>().second)>
-				static std::true_type test(int);
-
-				template <typename...>
-				static std::false_type test(...);
-			};
-
-			template <typename T>
-			struct has_push_back_test {
-			private:
-				template <typename C>
-				static sfinae_yes_t test(decltype(std::declval<C>().push_back(std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
-				template <typename C>
-				static sfinae_no_t test(...);
-
-			public:
-				static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
-			};
-
-			template <typename T>
-			struct has_insert_test {
-			private:
-				template <typename C>
-				static sfinae_yes_t test(decltype(std::declval<C>().insert(std::declval<std::add_rvalue_reference_t<typename C::const_iterator>>(),
-				     std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
-				template <typename C>
-				static sfinae_no_t test(...);
-
-			public:
-				static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
-			};
-
-			template <typename T>
-			struct has_insert_after_test {
-			private:
-				template <typename C>
-				static sfinae_yes_t test(decltype(std::declval<C>().insert_after(std::declval<std::add_rvalue_reference_t<typename C::const_iterator>>(),
-				     std::declval<std::add_rvalue_reference_t<typename C::value_type>>()))*);
-				template <typename C>
-				static sfinae_no_t test(...);
-
-			public:
-				static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
-			};
-
-			template <typename T>
-			struct has_size_test {
-			private:
-				template <typename C>
-				static sfinae_yes_t test(decltype(std::declval<C>().size())*);
-				template <typename C>
-				static sfinae_no_t test(...);
-
-			public:
-				static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
-			};
-
-			template <typename T>
-			struct has_max_size_test {
-			private:
-				template <typename C>
-				static sfinae_yes_t test(decltype(std::declval<C>().max_size())*);
-				template <typename C>
-				static sfinae_no_t test(...);
-
-			public:
-				static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
-			};
-
-			template <typename T>
-			struct has_to_string_test {
-			private:
-				template <typename C>
-				static sfinae_yes_t test(decltype(std::declval<C>().to_string())*);
-				template <typename C>
-				static sfinae_no_t test(...);
-
-			public:
-				static constexpr bool value = std::is_same_v<decltype(test<T>(0)), sfinae_yes_t>;
-			};
-
-#if defined(_MSC_VER) && _MSC_VER <= 1910
-			template <typename T, typename U, typename = decltype(std::declval<T&>() < std::declval<U&>())>
-			std::true_type supports_op_less_test(std::reference_wrapper<T>, std::reference_wrapper<U>);
-			std::false_type supports_op_less_test(...);
-			template <typename T, typename U, typename = decltype(std::declval<T&>() == std::declval<U&>())>
-			std::true_type supports_op_equal_test(std::reference_wrapper<T>, std::reference_wrapper<U>);
-			std::false_type supports_op_equal_test(...);
-			template <typename T, typename U, typename = decltype(std::declval<T&>() <= std::declval<U&>())>
-			std::true_type supports_op_less_equal_test(std::reference_wrapper<T>, std::reference_wrapper<U>);
-			std::false_type supports_op_less_equal_test(...);
-			template <typename T, typename OS, typename = decltype(std::declval<OS&>() << std::declval<T&>())>
-			std::true_type supports_ostream_op(std::reference_wrapper<T>, std::reference_wrapper<OS>);
-			std::false_type supports_ostream_op(...);
-			template <typename T, typename = decltype(to_string(std::declval<T&>()))>
-			std::true_type supports_adl_to_string(std::reference_wrapper<T>);
-			std::false_type supports_adl_to_string(...);
-#else
-			template <typename T, typename U, typename = decltype(std::declval<T&>() < std::declval<U&>())>
-			std::true_type supports_op_less_test(const T&, const U&);
-			std::false_type supports_op_less_test(...);
-			template <typename T, typename U, typename = decltype(std::declval<T&>() == std::declval<U&>())>
-			std::true_type supports_op_equal_test(const T&, const U&);
-			std::false_type supports_op_equal_test(...);
-			template <typename T, typename U, typename = decltype(std::declval<T&>() <= std::declval<U&>())>
-			std::true_type supports_op_less_equal_test(const T&, const U&);
-			std::false_type supports_op_less_equal_test(...);
-			template <typename T, typename OS, typename = decltype(std::declval<OS&>() << std::declval<T&>())>
-			std::true_type supports_ostream_op(const T&, const OS&);
-			std::false_type supports_ostream_op(...);
-			template <typename T, typename = decltype(to_string(std::declval<T&>()))>
-			std::true_type supports_adl_to_string(const T&);
-			std::false_type supports_adl_to_string(...);
-#endif
-
-			template <typename T, bool b>
-			struct is_matched_lookup_impl : std::false_type {};
-			template <typename T>
-			struct is_matched_lookup_impl<T, true> : std::is_same<typename T::key_type, typename T::value_type> {};
-
-			template <typename T>
-			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>
-		using supports_op_less
-		     = decltype(meta_detail::supports_op_less_test(std::declval<meta_detail::non_void_t<T>&>(), std::declval<meta_detail::non_void_t<U>&>()));
-		template <typename T, typename U = T>
-		using supports_op_equal
-		     = decltype(meta_detail::supports_op_equal_test(std::declval<meta_detail::non_void_t<T>&>(), std::declval<meta_detail::non_void_t<U>&>()));
-		template <typename T, typename U = T>
-		using supports_op_less_equal
-		     = decltype(meta_detail::supports_op_less_equal_test(std::declval<meta_detail::non_void_t<T>&>(), std::declval<meta_detail::non_void_t<U>&>()));
-		template <typename T, typename U = std::ostream>
-		using supports_ostream_op
-		     = decltype(meta_detail::supports_ostream_op(std::declval<meta_detail::non_void_t<T>&>(), std::declval<meta_detail::non_void_t<U>&>()));
-		template <typename T>
-		using supports_adl_to_string = decltype(meta_detail::supports_adl_to_string(std::declval<meta_detail::non_void_t<T>&>()));
-
-		template <typename T>
-		using supports_to_string_member = meta::boolean<meta_detail::has_to_string_test<meta_detail::non_void_t<T>>::value>;
-
-		template <typename T>
-		using is_callable = boolean<meta_detail::is_callable<T>::value>;
-
-		template <typename T>
-		constexpr inline bool is_callable_v = is_callable<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_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, 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 {};
-
-#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES
-		template <typename CharT, typename CharTargetT, typename TraitsT>
-		struct is_string_view_of<std::basic_string_view<CharT, TraitsT>, CharTargetT> : std::is_same<CharT, CharTargetT> {};
-#else
-		template <typename CharT, typename CharTargetT, typename TraitsT>
-		struct is_string_view_of<basic_string_view<CharT, TraitsT>, CharTargetT> : std::is_same<CharT, CharTargetT> {};
-#endif
-
-		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>
-#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES
-		     || is_specialization_of_v<T, std::basic_string_view>
-#else
-		     || is_specialization_of_v<T, basic_string_view>
-#endif
-		     || 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>>
-#if defined(SOL_CXX17_FEATURES) && SOL_CXX17_FEATURES
-		     || is_string_view_of_v<T, CharT>
-#endif
-		     >;
-
-		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_of<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>
-		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 meta
-} // namespace sol
-
-#endif // SOL_TRAITS_HPP