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refactor(templates): refactor Swap into a member function

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This commit is contained in:
_Redstone_c_
2022-04-14 22:41:22 +08:00
parent 5c82ab1e0d
commit 018d3afb73
6 changed files with 145 additions and 141 deletions
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44
Redcraft.Utility/Source/Public/Templates/Optional.h
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@ -225,6 +225,28 @@ public:
}
}
template <typename T> requires TIsMoveConstructible<OptionalType>::Value && TIsSwappable<OptionalType>::Value
constexpr void Swap(TOptional& InValue)
{
if (!IsValid() && !InValue.IsValid()) return;
if (IsValid() && !InValue.IsValid())
{
InValue = MoveTemp(*this);
Reset();
return;
}
if (InValue.IsValid() && !IsValid())
{
*this = MoveTemp(InValue);
InValue.Reset();
return;
}
NAMESPACE_REDCRAFT::Swap(GetValue(), InValue.GetValue());
}
private:
TAlignedStorage<sizeof(OptionalType), alignof(OptionalType)>::Type Value;
@ -273,28 +295,6 @@ constexpr TOptional<T> MakeOptional(Types&&... Args)
return TOptional<T>(InPlace, Forward<T>(Args)...);
}
template <typename T> requires TIsMoveConstructible<T>::Value&& TIsSwappable<T>::Value
constexpr void Swap(TOptional<T>& A, TOptional<T>& B)
{
if (!A && !B) return;
if (A && !B)
{
B = MoveTemp(A);
A.Reset();
return;
}
if (B && !A)
{
A = MoveTemp(B);
B.Reset();
return;
}
Swap(*A, *B);
}
template <typename T> struct TIsTOptional : FFalse { };
template <typename T> struct TIsTOptional<TOptional<T>> : FTrue { };