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fix(templates): fix requirements for FAny and TAtomic

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This commit is contained in:
_Redstone_c_
2022-12-16 19:30:55 +08:00
parent a8e1852b34
commit 441df3791c
4 changed files with 72 additions and 58 deletions
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37
Redcraft.Utility/Source/Public/Templates/Any.h
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@ -21,6 +21,13 @@ NAMESPACE_MODULE_BEGIN(Utility)
// 3) it is less exception-safe
// But we don't follow the the copy-and-swap idiom, because we assume that no function throws an exception.
NAMESPACE_PRIVATE_BEGIN
template <typename T>
concept CFAnyPlaceable = CDestructible<TDecay<T>> && CCopyConstructible<TDecay<T>> && CMoveConstructible<TDecay<T>> && CSwappable<TDecay<T>>;
NAMESPACE_PRIVATE_END
class alignas(16) FAny
{
public:
@ -79,15 +86,14 @@ public:
}
}
template <typename T, typename... Ts> requires (CDestructible<TDecay<T>>
&& CConstructibleFrom<TDecay<T>, Ts&&...>)
template <typename T, typename... Ts> requires (NAMESPACE_PRIVATE::CFAnyPlaceable<T> && CConstructibleFrom<TDecay<T>, Ts&&...>)
FORCEINLINE explicit FAny(TInPlaceType<T>, Ts&&... Args)
{
EmplaceImpl<T>(Forward<Ts>(Args)...);
}
template <typename T> requires (!CBaseOf<FAny, TDecay<T>> && !CTInPlaceType<TDecay<T>>
&& CDestructible<TDecay<T>> && CConstructibleFrom<TDecay<T>, T&&>)
&& NAMESPACE_PRIVATE::CFAnyPlaceable<T> && CConstructibleFrom<TDecay<T>, T&&>)
FORCEINLINE FAny(T&& InValue) : FAny(InPlaceType<TDecay<T>>, Forward<T>(InValue))
{ }
@ -213,7 +219,7 @@ public:
}
template <typename T> requires (!CBaseOf<FAny, TDecay<T>> && !CTInPlaceType<TDecay<T>>
&& CDestructible<TDecay<T>>&& CConstructibleFrom<TDecay<T>, T&&>)
&& NAMESPACE_PRIVATE::CFAnyPlaceable<T> && CConstructibleFrom<TDecay<T>, T&&>)
FORCEINLINE FAny& operator=(T&& InValue)
{
using DecayedType = TDecay<T>;
@ -231,8 +237,7 @@ public:
return *this;
}
template <typename T, typename... Ts> requires (CDestructible<TDecay<T>>
&& CConstructibleFrom<TDecay<T>, Ts&&...>)
template <typename T, typename... Ts> requires (NAMESPACE_PRIVATE::CFAnyPlaceable<T> && CConstructibleFrom<TDecay<T>, Ts&&...>)
FORCEINLINE TDecay<T>& Emplace(Ts&&... Args)
{
Destroy();
@ -247,22 +252,22 @@ public:
template <typename T> FORCEINLINE constexpr bool HoldsAlternative() const { return IsValid() ? GetTypeInfo() == typeid(T) : false; }
template <typename T> requires (CSameAs<T, TDecay<T>>&& CDestructible<TDecay<T>>)
template <typename T> requires (CSameAs<T, TDecay<T>> && NAMESPACE_PRIVATE::CFAnyPlaceable<T>)
FORCEINLINE constexpr T& GetValue() & { checkf(HoldsAlternative<T>(), TEXT("It is an error to call GetValue() on an wrong TAny. Please either check HoldsAlternative() or use Get(DefaultValue) instead.")); return *reinterpret_cast< T*>(GetStorage()); }
template <typename T> requires (CSameAs<T, TDecay<T>>&& CDestructible<TDecay<T>>)
template <typename T> requires (CSameAs<T, TDecay<T>> && NAMESPACE_PRIVATE::CFAnyPlaceable<T>)
FORCEINLINE constexpr T&& GetValue() && { checkf(HoldsAlternative<T>(), TEXT("It is an error to call GetValue() on an wrong TAny. Please either check HoldsAlternative() or use Get(DefaultValue) instead.")); return MoveTemp(*reinterpret_cast< T*>(GetStorage())); }
template <typename T> requires (CSameAs<T, TDecay<T>>&& CDestructible<TDecay<T>>)
template <typename T> requires (CSameAs<T, TDecay<T>> && NAMESPACE_PRIVATE::CFAnyPlaceable<T>)
FORCEINLINE constexpr const T& GetValue() const& { checkf(HoldsAlternative<T>(), TEXT("It is an error to call GetValue() on an wrong TAny. Please either check HoldsAlternative() or use Get(DefaultValue) instead.")); return *reinterpret_cast<const T*>(GetStorage()); }
template <typename T> requires (CSameAs<T, TDecay<T>>&& CDestructible<TDecay<T>>)
template <typename T> requires (CSameAs<T, TDecay<T>> && NAMESPACE_PRIVATE::CFAnyPlaceable<T>)
FORCEINLINE constexpr const T&& GetValue() const&& { checkf(HoldsAlternative<T>(), TEXT("It is an error to call GetValue() on an wrong TAny. Please either check HoldsAlternative() or use Get(DefaultValue) instead.")); return MoveTemp(*reinterpret_cast<const T*>(GetStorage())); }
template <typename T> requires (CSameAs<T, TDecay<T>> && CDestructible<TDecay<T>>)
template <typename T> requires (CSameAs<T, TDecay<T>> && NAMESPACE_PRIVATE::CFAnyPlaceable<T>)
FORCEINLINE constexpr T& Get( T& DefaultValue) & { return HoldsAlternative<T>() ? GetValue<T>() : DefaultValue; }
template <typename T> requires (CSameAs<T, TDecay<T>> && CDestructible<TDecay<T>>)
template <typename T> requires (CSameAs<T, TDecay<T>> && NAMESPACE_PRIVATE::CFAnyPlaceable<T>)
FORCEINLINE constexpr const T& Get(const T& DefaultValue) const& { return HoldsAlternative<T>() ? GetValue<T>() : DefaultValue; }
FORCEINLINE void Reset()