mirror of
https://github.com/SerenityOS/serenity
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ad328f852b
This commit un-confuses the many specialisations of AK::Traits, and makes it work correctly for all integral types. Prior to this, `AK::Traits<size_t>` would've been instantiating the base Traits implementation, not `Traits<u32>` or `Traits<u64>`.
52 lines
1.1 KiB
C++
52 lines
1.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Forward.h>
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#include <AK/HashFunctions.h>
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namespace AK {
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template<typename T>
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struct GenericTraits {
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using PeekType = T;
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using ConstPeekType = T;
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static constexpr bool is_trivial() { return false; }
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static constexpr bool equals(const T& a, const T& b) { return a == b; }
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};
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template<typename T>
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struct Traits : public GenericTraits<T> {
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};
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template<typename T>
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requires(IsIntegral<T>) struct Traits<T> : public GenericTraits<T> {
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static constexpr bool is_trivial() { return true; }
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static constexpr unsigned hash(T value)
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{
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if constexpr (sizeof(T) < 8)
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return int_hash(value);
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else
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return u64_hash(value);
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}
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};
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template<typename T>
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struct Traits<T*> : public GenericTraits<T*> {
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static unsigned hash(const T* p)
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{
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return int_hash((unsigned)(__PTRDIFF_TYPE__)p);
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}
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static constexpr bool is_trivial() { return true; }
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static bool equals(const T* a, const T* b) { return a == b; }
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};
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}
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using AK::GenericTraits;
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using AK::Traits;
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