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AK: Add RefPtrTraits to allow implementing custom null pointers

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This adds the ability to implement custom null states that allow
storing state in null pointers.
This commit is contained in:
Tom 2020-09-23 10:17:43 -06:00 • committed by Andreas Kling
parent 4dd104607d
commit 3c1ef744f6
5 changed files with 131 additions and 71 deletions
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5
AK/StdLibExtras.h
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@ -298,6 +298,11 @@ struct Conditional<false, TrueType, FalseType> {
typedef FalseType Type;
};
template<typename T>
struct IsNullPointer : IsSame<decltype(nullptr), typename RemoveCV<T>::Type> {
};
template<typename T>
struct RemoveReference {
typedef T Type;