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refactor(templates): trivializes TOptional and TVariant operations for types that use trivially copy/move operations

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This commit is contained in:
_Redstone_c_
2022-11-17 23:17:50 +08:00
parent f96c000b9e
commit a4ac19673f
2 changed files with 36 additions and 12 deletions
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24
Redcraft.Utility/Source/Public/Templates/Variant.h
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@ -157,13 +157,17 @@ public:
constexpr TVariant(FInvalid) : TVariant() { };
constexpr TVariant(const TVariant& InValue) requires (true && ... && CCopyConstructible<Ts>)
constexpr TVariant(const TVariant& InValue) requires (true && ... && CTriviallyCopyConstructible<Ts>) = default;
constexpr TVariant(const TVariant& InValue) requires ((true && ... && CCopyConstructible<Ts>) && !(true && ... && CTriviallyCopyConstructible<Ts>))
: TypeIndex(static_cast<uint8>(InValue.GetIndex()))
{
if (IsValid()) CopyConstructImpl[InValue.GetIndex()](&Value, &InValue.Value);
}
constexpr TVariant(TVariant&& InValue) requires (true && ... && CMoveConstructible<Ts>)
constexpr TVariant(TVariant&& InValue) requires (true && ... && CTriviallyMoveConstructible<Ts>) = default;
constexpr TVariant(TVariant&& InValue) requires ((true && ... && CMoveConstructible<Ts>) && !(true && ... && CTriviallyMoveConstructible<Ts>))
: TypeIndex(static_cast<uint8>(InValue.GetIndex()))
{
if (IsValid()) MoveConstructImpl[InValue.GetIndex()](&Value, &InValue.Value);
@ -189,12 +193,17 @@ public:
constexpr TVariant(T&& InValue) : TVariant(InPlaceType<typename NAMESPACE_PRIVATE::TVariantSelectedType<TRemoveReference<T>, Ts...>::Type>, Forward<T>(InValue))
{ }
constexpr ~TVariant()
constexpr ~TVariant() requires (true && ... && CTriviallyDestructible<Ts>) = default;
constexpr ~TVariant() requires (!(true && ... && CTriviallyDestructible<Ts>))
{
if constexpr (!(true && ... && CTriviallyDestructible<Ts>)) Reset();
Reset();
}
constexpr TVariant& operator=(const TVariant& InValue) requires (true && ... && (CCopyConstructible<Ts> && CCopyAssignable<Ts>))
constexpr TVariant& operator=(const TVariant& InValue) requires (true && ... && (CTriviallyCopyConstructible<Ts> && CTriviallyCopyAssignable<Ts>)) = default;
constexpr TVariant& operator=(const TVariant& InValue) requires ((true && ... && (CCopyConstructible<Ts> && CCopyAssignable<Ts>))
&& !(true && ... && (CTriviallyCopyConstructible<Ts> && CTriviallyCopyAssignable<Ts>)))
{
if (&InValue == this) return *this;
@ -215,7 +224,10 @@ public:
return *this;
}
constexpr TVariant& operator=(TVariant&& InValue) requires (true && ... && (CMoveConstructible<Ts> && CMoveAssignable<Ts>))
constexpr TVariant& operator=(TVariant&& InValue) requires (true && ... && (CTriviallyMoveConstructible<Ts> && CTriviallyMoveAssignable<Ts>)) = default;
constexpr TVariant& operator=(TVariant&& InValue) requires ((true && ... && (CMoveConstructible<Ts> && CMoveAssignable<Ts>))
&& !(true && ... && (CTriviallyMoveConstructible<Ts> && CTriviallyMoveAssignable<Ts>)))
{
if (&InValue == this) return *this;