Redstone1024/Redcraft
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

refactor(templates): refactor operator== and operator<=> to member or friend

Browse Source
This commit is contained in:
_Redstone_c_
2022-12-18 19:11:53 +08:00
parent 6cee8a1185
commit d87d292691
6 changed files with 183 additions and 157 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
Redcraft.Utility/Source/Public/Templates/Optional.h
View File

@ -16,6 +16,9 @@ class TOptional;
NAMESPACE_PRIVATE_BEGIN
template <typename T> struct TIsTOptional : FFalse { };
template <typename T> struct TIsTOptional<TOptional<T>> : FTrue { };
template <typename T, typename U>
concept CTOptionalAllowUnwrappable =
!(CConstructibleFrom<U, TOptional<T>& >
@ -33,6 +36,8 @@ concept CTOptionalAllowUnwrappable =
NAMESPACE_PRIVATE_END
template <typename T> concept CTOptional = NAMESPACE_PRIVATE::TIsTOptional<TRemoveCV<T>>::Value;
template <typename OptionalType> requires (CDestructible<OptionalType>)
class TOptional
{
@ -192,6 +197,36 @@ public:
return *this;
}
template <typename T = OptionalType> requires (CWeaklyEqualityComparable<OptionalType, T>)
friend FORCEINLINE constexpr bool operator==(const TOptional& LHS, const TOptional<T>& RHS)
{
if (LHS.IsValid() != RHS.IsValid()) return false;
if (LHS.IsValid() == false) return true;
return *LHS == *RHS;
}
template <typename T = OptionalType> requires (CSynthThreeWayComparable<OptionalType, T>)
friend FORCEINLINE constexpr partial_ordering operator<=>(const TOptional& LHS, const TOptional<T>& RHS)
{
if (LHS.IsValid() != RHS.IsValid()) return partial_ordering::unordered;
if (LHS.IsValid() == false) return partial_ordering::equivalent;
return SynthThreeWayCompare(*LHS, *RHS);
}
template <typename T = OptionalType> requires (!CTOptional<T>&& CWeaklyEqualityComparable<OptionalType, T>)
FORCEINLINE constexpr bool operator==(const T& InValue) const&
{
return IsValid() ? GetValue() == InValue : false;
}
template <typename T = OptionalType> requires (!CTOptional<T>&& CSynthThreeWayComparable<OptionalType, T>)
FORCEINLINE constexpr partial_ordering operator<=>(const T& InValue) const&
{
return IsValid() ? SynthThreeWayCompare(GetValue(), InValue) : partial_ordering::unordered;
}
FORCEINLINE constexpr bool operator==(FInvalid) const& { return !IsValid(); }
template <typename... ArgTypes> requires (CConstructibleFrom<OptionalType, ArgTypes...>)
FORCEINLINE constexpr OptionalType& Emplace(ArgTypes&&... Args)
@ -272,34 +307,6 @@ private:
template <typename T>
TOptional(T) -> TOptional<T>;
template <typename T, typename U> requires (CWeaklyEqualityComparable<T, U>)
FORCEINLINE constexpr bool operator==(const TOptional<T>& LHS, const TOptional<U>& RHS)
{
if (LHS.IsValid() != RHS.IsValid()) return false;
if (LHS.IsValid() == false) return true;
return *LHS == *RHS;
}
template <typename T, typename U> requires (CSynthThreeWayComparable<T, U>)
FORCEINLINE constexpr partial_ordering operator<=>(const TOptional<T>& LHS, const TOptional<U>& RHS)
{
if (LHS.IsValid() != RHS.IsValid()) return partial_ordering::unordered;
if (LHS.IsValid() == false) return partial_ordering::equivalent;
return SynthThreeWayCompare(*LHS, *RHS);
}
template <typename T, typename U> requires (CWeaklyEqualityComparable<T, U>)
FORCEINLINE constexpr bool operator==(const TOptional<T>& LHS, const U& RHS)
{
return LHS.IsValid() ? *LHS == RHS : false;
}
template <typename T>
FORCEINLINE constexpr bool operator==(const TOptional<T>& LHS, FInvalid)
{
return !LHS.IsValid();
}
template <typename T> requires (CDestructible<T>)
FORCEINLINE constexpr TOptional<TDecay<T>> MakeOptional(FInvalid)
{
@ -318,15 +325,6 @@ FORCEINLINE constexpr TOptional<T> MakeOptional(Ts&&... Args)
return TOptional<T>(InPlace, Forward<T>(Args)...);
}
NAMESPACE_PRIVATE_BEGIN
template <typename T> struct TIsTOptional : FFalse { };
template <typename T> struct TIsTOptional<TOptional<T>> : FTrue { };
NAMESPACE_PRIVATE_END
template <typename T> concept CTOptional = NAMESPACE_PRIVATE::TIsTOptional<TRemoveCV<T>>::Value;
NAMESPACE_MODULE_END(Utility)
NAMESPACE_MODULE_END(Redcraft)
NAMESPACE_REDCRAFT_END