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refactor(templates): remove TOptional<TReferenceWrapper<T>> specialization

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This commit is contained in:
_Redstone_c_ 2022-12-16 22:04:35 +08:00
parent 441df3791c
commit b6c76ceadc
1 changed files with 0 additions and 126 deletions
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126
Redcraft.Utility/Source/Public/Templates/ReferenceWrapper.h
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@ -65,10 +65,6 @@ private:
template <typename T> requires (CObject<T> || CFunction<T>) friend class TReferenceWrapper; template <typename T> requires (CObject<T> || CFunction<T>) friend class TReferenceWrapper;
// Optimize TOptional with these hacking
FORCEINLINE constexpr TReferenceWrapper(FInvalid) : Pointer(nullptr) { };
template <typename T> requires (CDestructible<T>) friend class TOptional;
}; };
template <typename T> template <typename T>
@ -122,128 +118,6 @@ using TUnwrapReference = typename NAMESPACE_PRIVATE::TUnwrapReferenceImpl<T>::Ty
template <typename T> template <typename T>
using TUnwrapRefDecay = typename NAMESPACE_PRIVATE::TUnwrapRefDecayImpl<T>::Type; using TUnwrapRefDecay = typename NAMESPACE_PRIVATE::TUnwrapRefDecayImpl<T>::Type;
NAMESPACE_PRIVATE_BEGIN
template <typename T, typename U>
concept CTOptionalRefAllowUnwrappable =
!(CConstructibleFrom<U, TOptional<T>& >
|| CConstructibleFrom<U, const TOptional<T>& >
|| CConstructibleFrom<U, TOptional<T>&&>
|| CConstructibleFrom<U, const TOptional<T>&&>
|| CConvertibleTo< TOptional<T>&, U>
|| CConvertibleTo<const TOptional<T>&, U>
|| CConvertibleTo< TOptional<T>&&, U>
|| CConvertibleTo<const TOptional<T>&&, U>
|| CAssignableFrom<U&, TOptional<T>& >
|| CAssignableFrom<U&, const TOptional<T>& >
|| CAssignableFrom<U&, TOptional<T>&&>
|| CAssignableFrom<U&, const TOptional<T>&&>);
NAMESPACE_PRIVATE_END
template <typename ReferencedType>
class TOptional<TReferenceWrapper<ReferencedType>>
{
private:
using OptionalType = TReferenceWrapper<ReferencedType>;
public:
using ValueType = OptionalType;
FORCEINLINE constexpr TOptional() : Reference(Invalid) { }
FORCEINLINE constexpr TOptional(FInvalid) : TOptional() { }
template <typename... Ts> requires (CConstructibleFrom<OptionalType, Ts...>)
FORCEINLINE constexpr explicit TOptional(FInPlace, Ts&&... Args)
: Reference(Forward<Ts>(Args)...)
{ }
template <typename T = OptionalType> requires (CConstructibleFrom<OptionalType, T&&>
&& !CSameAs<TRemoveCVRef<T>, FInPlace> && !CBaseOf<TOptional, TRemoveCVRef<T>>)
FORCEINLINE constexpr explicit (!CConvertibleTo<T&&, OptionalType>) TOptional(T&& InValue)
: TOptional(InPlace, Forward<T>(InValue))
{ }
FORCEINLINE TOptional(const TOptional& InValue) = default;
FORCEINLINE TOptional(TOptional&& InValue) = default;
template <typename T = OptionalType> requires (CConstructibleFrom<OptionalType, const T&> && NAMESPACE_PRIVATE::CTOptionalRefAllowUnwrappable<T, OptionalType>)
FORCEINLINE constexpr explicit (!CConvertibleTo<const T&, OptionalType>) TOptional(const TOptional<T>& InValue)
: Reference(InValue.Reference)
{ }
FORCEINLINE ~TOptional() = default;
FORCEINLINE TOptional& operator=(const TOptional& InValue) = default;
FORCEINLINE TOptional& operator=(TOptional&& InValue) = default;
template <typename T = OptionalType> requires (CConstructibleFrom<OptionalType, const T&>
&& CAssignableFrom<OptionalType&, const T&> && NAMESPACE_PRIVATE::CTOptionalRefAllowUnwrappable<T, OptionalType>)
FORCEINLINE constexpr TOptional& operator=(const TOptional<T>& InValue)
{
Reference = InValue.Reference;
return *this;
}
template <typename T = OptionalType> requires (CConstructibleFrom<OptionalType, T&&> && CAssignableFrom<OptionalType&, T&&>)
FORCEINLINE constexpr TOptional& operator=(T&& InValue)
{
Reference = InValue;
return *this;
}
template <typename... ArgTypes> requires (CConstructibleFrom<OptionalType, ArgTypes...>)
FORCEINLINE constexpr OptionalType& Emplace(ArgTypes&&... Args)
{
Reference = TReferenceWrapper<ReferencedType>(Forward<ArgTypes>(Args)...);
return Reference;
}
FORCEINLINE constexpr bool IsValid() const { return Reference.Pointer != nullptr; }
FORCEINLINE constexpr explicit operator bool() const { return Reference.Pointer != nullptr; }
FORCEINLINE constexpr OptionalType& GetValue() & { checkf(IsValid(), TEXT("It is an error to call GetValue() on an unset TOptional. Please either check IsValid() or use Get(DefaultValue) instead.")); return Reference; }
FORCEINLINE constexpr OptionalType&& GetValue() && { checkf(IsValid(), TEXT("It is an error to call GetValue() on an unset TOptional. Please either check IsValid() or use Get(DefaultValue) instead.")); return Reference; }
FORCEINLINE constexpr const OptionalType& GetValue() const& { checkf(IsValid(), TEXT("It is an error to call GetValue() on an unset TOptional. Please either check IsValid() or use Get(DefaultValue) instead.")); return Reference; }
FORCEINLINE constexpr const OptionalType&& GetValue() const&& { checkf(IsValid(), TEXT("It is an error to call GetValue() on an unset TOptional. Please either check IsValid() or use Get(DefaultValue) instead.")); return Reference; }
FORCEINLINE constexpr const OptionalType* operator->() const { return &GetValue(); }
FORCEINLINE constexpr OptionalType* operator->() { return &GetValue(); }
FORCEINLINE constexpr OptionalType& operator*() & { return GetValue(); }
FORCEINLINE constexpr OptionalType&& operator*() && { return GetValue(); }
FORCEINLINE constexpr const OptionalType& operator*() const& { return GetValue(); }
FORCEINLINE constexpr const OptionalType&& operator*() const&& { return GetValue(); }
FORCEINLINE constexpr OptionalType& Get( OptionalType& DefaultValue) & { return IsValid() ? GetValue() : DefaultValue; }
FORCEINLINE constexpr const OptionalType& Get(const OptionalType& DefaultValue) const& { return IsValid() ? GetValue() : DefaultValue; }
FORCEINLINE constexpr void Reset()
{
Reference = Invalid;
}
FORCEINLINE constexpr size_t GetTypeHash() const requires (CHashable<ReferencedType>)
{
if (!IsValid()) return 2824517378;
return Reference.GetTypeHash();
}
FORCEINLINE constexpr void Swap(TOptional& InValue)
{
Reference.Swap(InValue.Reference);
}
private:
TReferenceWrapper<ReferencedType> Reference;
template <typename T> requires (CDestructible<T>) friend class TOptional;
};
NAMESPACE_MODULE_END(Utility) NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft) NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END NAMESPACE_REDCRAFT_END