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

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This commit is contained in:
_Redstone_c_
2022-05-16 22:42:17 +08:00
parent c316b8f190
commit 413762a90a
16 changed files with 213 additions and 261 deletions
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26
Redcraft.Utility/Source/Public/Templates/Variant.h
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@ -49,7 +49,7 @@ struct TVariantSelectedType;
template <typename T, typename U, typename... Types>
struct TVariantSelectedType<T, U, Types...>
{
using TypeAlternativeA = typename TConditional<TIsConstructible<U, T&&>::Value, U, void>::Type;
using TypeAlternativeA = typename TConditional<CConstructible<U, T&&>, U, void>::Type;
using TypeAlternativeB = typename TVariantSelectedType<T, Types...>::Type;
using Type = typename TConditional<TIsSame<typename TRemoveCVRef<TypeAlternativeA>::Type, void>::Value, TypeAlternativeB,
@ -78,7 +78,7 @@ struct TVariantSelectedType<T>
NAMESPACE_PRIVATE_END
template <typename... Types> requires (true && ... && TIsDestructible<Types>::Value) && (sizeof...(Types) < 0xFF)
template <typename... Types> requires (true && ... && CDestructible<Types>) && (sizeof...(Types) < 0xFF)
struct TVariant
{
static constexpr size_t AlternativeSize = sizeof...(Types);
@ -90,20 +90,20 @@ struct TVariant
constexpr TVariant(FInvalid) : TVariant() { };
constexpr TVariant(const TVariant& InValue) requires (true && ... && TIsCopyConstructible<Types>::Value)
constexpr TVariant(const TVariant& InValue) requires (true && ... && CCopyConstructible<Types>)
: TypeIndex(static_cast<uint8>(InValue.GetIndex()))
{
if (IsValid()) CopyConstructImpl[InValue.GetIndex()](&Value, &InValue.Value);
}
constexpr TVariant(TVariant&& InValue) requires (true && ... && TIsMoveConstructible<Types>::Value)
constexpr TVariant(TVariant&& InValue) requires (true && ... && CMoveConstructible<Types>)
: TypeIndex(static_cast<uint8>(InValue.GetIndex()))
{
if (IsValid()) MoveConstructImpl[InValue.GetIndex()](&Value, &InValue.Value);
}
template <size_t I, typename... ArgTypes> requires (I < AlternativeSize)
&& TIsConstructible<typename TAlternativeType<I>::Type, ArgTypes...>::Value
&& CConstructible<typename TAlternativeType<I>::Type, ArgTypes...>
constexpr explicit TVariant(TInPlaceIndex<I>, ArgTypes&&... Args)
: TypeIndex(I)
{
@ -112,7 +112,7 @@ struct TVariant
}
template <typename T, typename... ArgTypes> requires (TAlternativeIndex<T>::Value != INDEX_NONE)
&& TIsConstructible<typename TAlternativeType<TAlternativeIndex<T>::Value>::Type, ArgTypes...>::Value
&& CConstructible<typename TAlternativeType<TAlternativeIndex<T>::Value>::Type, ArgTypes...>
constexpr explicit TVariant(TInPlaceType<T>, ArgTypes&&... Args)
: TVariant(InPlaceIndex<TAlternativeIndex<T>::Value>, Forward<ArgTypes>(Args)...)
{ }
@ -125,10 +125,10 @@ struct TVariant
constexpr ~TVariant()
{
if constexpr (!(true && ... && TIsTriviallyDestructible<Types>::Value)) Reset();
if constexpr (!(true && ... && CTriviallyDestructible<Types>)) Reset();
}
constexpr TVariant& operator=(const TVariant& InValue) requires (true && ... && (TIsCopyConstructible<Types>::Value && TIsCopyAssignable<Types>::Value))
constexpr TVariant& operator=(const TVariant& InValue) requires (true && ... && (CCopyConstructible<Types> && CCopyAssignable<Types>))
{
if (&InValue == this) return *this;
@ -149,7 +149,7 @@ struct TVariant
return *this;
}
constexpr TVariant& operator=(TVariant&& InValue) requires (true && ... && (TIsMoveConstructible<Types>::Value && TIsMoveAssignable<Types>::Value))
constexpr TVariant& operator=(TVariant&& InValue) requires (true && ... && (CMoveConstructible<Types> && CMoveAssignable<Types>))
{
if (&InValue == this) return *this;
@ -187,7 +187,7 @@ struct TVariant
}
template <size_t I, typename... ArgTypes> requires (I < AlternativeSize)
&& TIsConstructible<typename TAlternativeType<I>::Type, ArgTypes...>::Value
&& CConstructible<typename TAlternativeType<I>::Type, ArgTypes...>
constexpr typename TAlternativeType<I>::Type& Emplace(ArgTypes&&... Args)
{
Reset();
@ -200,7 +200,7 @@ struct TVariant
}
template <typename T, typename... ArgTypes> requires (TAlternativeIndex<T>::Value != INDEX_NONE)
&& TIsConstructible<typename TAlternativeType<TAlternativeIndex<T>::Value>::Type, ArgTypes...>::Value
&& CConstructible<typename TAlternativeType<TAlternativeIndex<T>::Value>::Type, ArgTypes...>
constexpr T& Emplace(ArgTypes&&... Args)
{
return Emplace<TAlternativeIndex<T>::Value>(Forward<ArgTypes>(Args)...);
@ -299,7 +299,7 @@ struct TVariant
{
if (GetIndex() == INDEX_NONE) return;
if constexpr (!(true && ... && TIsTriviallyDestructible<Types>::Value))
if constexpr (!(true && ... && CTriviallyDestructible<Types>))
{
DestroyImpl[GetIndex()](&Value);
}
@ -319,7 +319,7 @@ struct TVariant
return HashCombine(GetTypeHash(GetIndex()), HashImpl[GetIndex()](&Value));
}
constexpr void Swap(TVariant& InValue) requires (true && ... && (TIsMoveConstructible<Types>::Value && TIsSwappable<Types>::Value))
constexpr void Swap(TVariant& InValue) requires (true && ... && (CMoveConstructible<Types> && TIsSwappable<Types>::Value))
{
if (!IsValid() && !InValue.IsValid()) return;