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refactor(typetraits): replaces template class type traits with alias template for TypeTraits/Invocable.h

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This commit is contained in:
_Redstone_c_ 2022-05-22 23:05:11 +08:00
parent 2ce259e7cc
commit 4205a23310
4 changed files with 17 additions and 17 deletions
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6
Redcraft.Utility/Source/Private/Testing/TypeTraitsTesting.cpp
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@ -438,9 +438,9 @@ void TestTypeTraits()
always_check(!(CInvocableResult<int32, int32(int32), FTestStructA>));
always_check(!(CInvocableResult<FTestStructA, int32(int32), int32>));
always_check((CSameAs<int32, TInvokeResult<int32()>::Type>));
always_check((CSameAs<int32, TInvokeResult<int32(int32), int32>::Type>));
// always_check((CSameAs<char(&)[2], TInvokeResult<char(&())[2]>::Type>));
always_check((CSameAs<int32, TInvokeResult<int32()>>));
always_check((CSameAs<int32, TInvokeResult<int32(int32), int32>>));
// always_check((CSameAs<char(&)[2], TInvokeResult<char(&())[2]>>));
always_check((CInvocable <decltype([]( ) -> void { }) >));
always_check((CRegularInvocable <decltype([](int32 A ) -> int32 { return A; }), int32 >));

16
Redcraft.Utility/Source/Public/Templates/Tuple.h
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@ -356,14 +356,14 @@ public:
template <typename F, typename... ArgTypes> requires CInvocable<F, Types..., ArgTypes...> constexpr auto ApplyBefore(F&& Func, ArgTypes&&... Args) volatile&& { return Helper::ApplyBefore(Forward<F>(Func), static_cast< volatile TTuple&&>(*this), Forward<ArgTypes>(Args)...); }
template <typename F, typename... ArgTypes> requires CInvocable<F, Types..., ArgTypes...> constexpr auto ApplyBefore(F&& Func, ArgTypes&&... Args) const volatile&& { return Helper::ApplyBefore(Forward<F>(Func), static_cast<const volatile TTuple&&>(*this), Forward<ArgTypes>(Args)...); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) & { return Helper::Transform(Forward<F>(Func), static_cast< TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) const & { return Helper::Transform(Forward<F>(Func), static_cast<const TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) volatile& { return Helper::Transform(Forward<F>(Func), static_cast< volatile TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) const volatile& { return Helper::Transform(Forward<F>(Func), static_cast<const volatile TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) && { return Helper::Transform(Forward<F>(Func), static_cast< TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) const && { return Helper::Transform(Forward<F>(Func), static_cast<const TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) volatile&& { return Helper::Transform(Forward<F>(Func), static_cast< volatile TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, typename TInvokeResult<F, Types>::Type>)) constexpr auto Transform(F&& Func) const volatile&& { return Helper::Transform(Forward<F>(Func), static_cast<const volatile TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) & { return Helper::Transform(Forward<F>(Func), static_cast< TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) const & { return Helper::Transform(Forward<F>(Func), static_cast<const TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) volatile& { return Helper::Transform(Forward<F>(Func), static_cast< volatile TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) const volatile& { return Helper::Transform(Forward<F>(Func), static_cast<const volatile TTuple& >(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) && { return Helper::Transform(Forward<F>(Func), static_cast< TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) const && { return Helper::Transform(Forward<F>(Func), static_cast<const TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) volatile&& { return Helper::Transform(Forward<F>(Func), static_cast< volatile TTuple&&>(*this)); }
template <typename F> requires (true && ... && (CInvocable<F, Types> && !CSameAs<void, TInvokeResult<F, Types>>)) constexpr auto Transform(F&& Func) const volatile&& { return Helper::Transform(Forward<F>(Func), static_cast<const volatile TTuple&&>(*this)); }
template <typename T> requires CConstructibleFrom<T, Types...> constexpr T Construct() & { return Helper::template Construct<T>(static_cast< TTuple& >(*this)); }
template <typename T> requires CConstructibleFrom<T, Types...> constexpr T Construct() const & { return Helper::template Construct<T>(static_cast<const TTuple& >(*this)); }

8
Redcraft.Utility/Source/Public/Templates/Variant.h
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@ -236,7 +236,7 @@ struct TVariant
{
checkf(IsValid(), TEXT("It is an error to call Visit() on an wrong TVariant. Please either check IsValid()."));
using ReturnType = typename TCommonType<typename TInvokeResult<F, Types>::Type...>::Type;
using ReturnType = typename TCommonType<TInvokeResult<F, Types>...>::Type;
using FInvokeImpl = ReturnType(*)(F&&, void*);
static constexpr FInvokeImpl InvokeImpl[] = { [](F&& Func, void* This) -> ReturnType { return InvokeResult<ReturnType>(Forward<F>(Func), *reinterpret_cast<Types*>(This)); }... };
@ -249,7 +249,7 @@ struct TVariant
{
checkf(IsValid(), TEXT("It is an error to call Visit() on an wrong TVariant. Please either check IsValid()."));
using ReturnType = typename TCommonType<typename TInvokeResult<F, Types>::Type...>::Type;
using ReturnType = typename TCommonType<TInvokeResult<F, Types>...>::Type;
using FInvokeImpl = ReturnType(*)(F&&, void*);
static constexpr FInvokeImpl InvokeImpl[] = { [](F&& Func, void* This) -> ReturnType { return InvokeResult<ReturnType>(Forward<F>(Func), MoveTemp(*reinterpret_cast<Types*>(This))); }... };
@ -262,7 +262,7 @@ struct TVariant
{
checkf(IsValid(), TEXT("It is an error to call Visit() on an wrong TVariant. Please either check IsValid()."));
using ReturnType = typename TCommonType<typename TInvokeResult<F, Types>::Type...>::Type;
using ReturnType = typename TCommonType<TInvokeResult<F, Types>...>::Type;
using FInvokeImpl = ReturnType(*)(F&&, const void*);
static constexpr FInvokeImpl InvokeImpl[] = { [](F&& Func, const void* This) -> ReturnType { return InvokeResult<ReturnType>(Forward<F>(Func), *reinterpret_cast<const Types*>(This)); }... };
@ -275,7 +275,7 @@ struct TVariant
{
checkf(IsValid(), TEXT("It is an error to call Visit() on an wrong TVariant. Please either check IsValid()."));
using ReturnType = typename TCommonType<typename TInvokeResult<F, Types>::Type...>::Type;
using ReturnType = typename TCommonType<TInvokeResult<F, Types>...>::Type;
using FInvokeImpl = ReturnType(*)(F&&, const void*);
static constexpr FInvokeImpl InvokeImpl[] = { [](F&& Func, const void* This) -> ReturnType { return InvokeResult<ReturnType>(Forward<F>(Func), MoveTemp(*reinterpret_cast<const Types*>(This))); }... };

4
Redcraft.Utility/Source/Public/TypeTraits/Invocable.h
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@ -12,13 +12,13 @@ NAMESPACE_MODULE_BEGIN(Utility)
template <typename F, typename... Args> concept CInvocable = NAMESPACE_STD::is_invocable_v<F, Args...>;
template <typename R, typename F, typename... Args> concept CInvocableResult = NAMESPACE_STD::is_invocable_r_v<R, F, Args...>; // FIXME: The result for char(&())[2] is wrong on MSVC
template <typename F, typename... Args> struct TInvokeResult { using Type = NAMESPACE_STD::invoke_result_t<F, Args...>; }; // FIXME: The result for char(&())[2] is wrong on MSVC
template <typename F, typename... Args> using TInvokeResult = NAMESPACE_STD::invoke_result_t<F, Args...>; // FIXME: The result for char(&())[2] is wrong on MSVC
template <typename F, typename... Types>
concept CRegularInvocable = CInvocable<F, Types...>;
template <typename F, typename... Types>
concept CPredicate = CRegularInvocable<F, Types...> && CBooleanTestable<typename TInvokeResult<F, Types...>::Type>;
concept CPredicate = CRegularInvocable<F, Types...> && CBooleanTestable<TInvokeResult<F, Types...>>;
template <typename R, typename T, typename U>
concept CRelation =