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style(templates): redefine placeholders such as ForceInit, InPlace, etc.

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This commit is contained in:
_Redstone_c_
2022-03-14 18:03:57 +08:00
parent 8a3b089648
commit 0b4cb1a9e0
4 changed files with 40 additions and 8 deletions
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13
Redcraft.Utility/Source/Public/Templates/Optional.h
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@ -2,6 +2,7 @@
#include "CoreTypes.h"
#include "Templates/Compare.h"
#include "Templates/Placeholders.h"
#include "Concepts/Comparable.h"
#include "TypeTraits/TypeTraits.h"
#include "Miscellaneous/AssertionMacros.h"
@ -19,17 +20,17 @@ public:
constexpr TOptional() : bIsValid(false) { }
constexpr TOptional(EInvalid) : TOptional() { }
constexpr TOptional(FInvalid) : TOptional() { }
template <typename... Types> requires TIsConstructible<OptionalType, Types...>::Value
constexpr explicit TOptional(EInPlace, Types&&... Args)
constexpr explicit TOptional(FInPlace, Types&&... Args)
: bIsValid(true)
{
new(&Value) OptionalType(Forward<Types>(Args)...);
}
template <typename T = OptionalType> requires TIsConstructible<OptionalType, T&&>::Value
&& (!TIsSame<typename TRemoveCVRef<T>::Type, EInPlace>::Value) && (!TIsSame<typename TRemoveCVRef<T>::Type, TOptional>::Value)
&& (!TIsSame<typename TRemoveCVRef<T>::Type, FInPlace>::Value) && (!TIsSame<typename TRemoveCVRef<T>::Type, TOptional>::Value)
constexpr explicit(!TIsConvertible<T&&, OptionalType>::Value) TOptional(T&& InValue)
: TOptional(InPlace, Forward<T>(InValue))
{ }
@ -250,6 +251,12 @@ constexpr bool operator!=(const T& LHS, const TOptional<U>& RHS)
return RHS.IsValid() ? LHS != *RHS : true;
}
template <typename T>
constexpr TOptional<typename TDecay<T>::Type> MakeOptional(FInvalid)
{
return TOptional<typename TDecay<T>::Type>(Invalid);
}
template <typename T>
constexpr TOptional<typename TDecay<T>::Type> MakeOptional(T&& InValue)
{