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AK+Kernel: Unify Traits<T>::equals()'s argument order on different types

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There was a small mishmash of argument order, as seen on the table:

                 | Traits<T>::equals(U, T) | Traits<T>::equals(T, U)
   ============= | ======================= | =======================
   uses equals() | HashMap                 | Vector, HashTable
defines equals() | *String[^1]             | ByteBuffer

[^1]: String, DeprecatedString, their Fly-type equivalents and KString.

This mostly meant that you couldn't use a StringView for finding a value
in Vector<String>.

I'm changing the order of arguments to make the trait type itself first
(`Traits<T>::equals(T, U)`), as I think it's more expected and makes us
more consistent with the rest of the functions that put the stored type
first (like StringUtils functions and binary_serach). I've also renamed
the variable name "other" in find functions to "entry" to give more
importance to the value.

With this change, each of the following lines will now compile
successfully:

    Vector<String>().contains_slow("WHF!"sv);
    HashTable<String>().contains("WHF!"sv);
    HashMap<ByteBuffer, int>().contains("WHF!"sv.bytes());
This commit is contained in:
Karol Kosek 2023-08-21 16:38:11 +02:00 • committed by Andreas Kling
parent 5ff7448fee
commit e575ee4462
7 changed files with 26 additions and 16 deletions
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10
Kernel/Library/KString.h
View file

@ -91,7 +91,7 @@ struct Traits<NonnullOwnPtr<Kernel::KString>> : public GenericTraits<NonnullOwnP
using ConstPeekType = Kernel::KString const*;
static unsigned hash(NonnullOwnPtr<Kernel::KString> const& p) { return string_hash(p->characters(), p->length()); }
static bool equals(NonnullOwnPtr<Kernel::KString> const& a, NonnullOwnPtr<Kernel::KString> const& b) { return a->view() == b->view(); }
static bool equals(StringView a, NonnullOwnPtr<Kernel::KString> const& b) { return a == b->view(); }
static bool equals(NonnullOwnPtr<Kernel::KString> const& a, StringView b) { return a->view() == b; }
};
template<>
@ -113,11 +113,11 @@ struct Traits<OwnPtr<Kernel::KString>> : public GenericTraits<OwnPtr<Kernel::KSt
return a->view() == b->view();
}
static bool equals(StringView a, OwnPtr<Kernel::KString> const& b)
static bool equals(OwnPtr<Kernel::KString> const& a, StringView b)
{
if (!b)
return a.is_null();
return a == b->view();
if (!a)
return b.is_null();
return a->view() == b;
}
};