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AK: Add basic Traits for RefPtr

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This allows RefPtr to be stored in a HashTable<RefPtr<T>> :^)

It's unfortunate about the const_casts. We'll need to fix HashMap::get
to play nice with non-const Traits<T>::PeekType at some point.
This commit is contained in:
Andreas Kling 2020-02-16 19:36:15 +01:00
parent 9794e18a20
commit a6e69bda71
5 changed files with 13 additions and 6 deletions
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8
AK/RefPtr.h
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@ -29,6 +29,7 @@
#include <AK/LogStream.h>
#include <AK/NonnullRefPtr.h>
#include <AK/StdLibExtras.h>
#include <AK/Traits.h>
#include <AK/Types.h>
namespace AK {
@ -274,6 +275,13 @@ inline const LogStream& operator<<(const LogStream& stream, const RefPtr<T>& val
return stream << value.ptr();
}
template<typename T>
struct Traits<RefPtr<T>> : public GenericTraits<RefPtr<T>> {
using PeekType = const T*;
static unsigned hash(const RefPtr<T>& p) { return int_hash((u32)p.ptr()); }
static bool equals(const RefPtr<T>& a, const RefPtr<T>& b) { return a.ptr() == b.ptr(); }
};
}
using AK::RefPtr;