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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Forward.h>
#include <AK/HashFunctions.h>
namespace AK {
template<typename T>
struct GenericTraits {
using PeekType = T;
static constexpr bool is_trivial() { return false; }
static constexpr bool equals(const T& a, const T& b) { return a == b; }
};
template<typename T>
struct Traits : public GenericTraits<T> {
};
template<>
struct Traits<int> : public GenericTraits<int> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(int i) { return int_hash(i); }
};
template<>
struct Traits<char> : public GenericTraits<char> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(char c) { return int_hash(c); }
};
template<>
struct Traits<i16> : public GenericTraits<i16> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(i16 i) { return int_hash(i); }
};
template<>
struct Traits<i64> : public GenericTraits<i64> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(i64 i) { return u64_hash(i); }
};
template<>
struct Traits<unsigned> : public GenericTraits<unsigned> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(unsigned u) { return int_hash(u); }
};
template<>
struct Traits<u8> : public GenericTraits<u8> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(u8 u) { return int_hash(u); }
};
template<>
struct Traits<u16> : public GenericTraits<u16> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(u16 u) { return int_hash(u); }
};
template<>
struct Traits<u64> : public GenericTraits<u64> {
static constexpr bool is_trivial() { return true; }
static unsigned hash(u64 u) { return u64_hash(u); }
};
template<typename T>
struct Traits<T*> : public GenericTraits<T*> {
static unsigned hash(const T* p)
{
return int_hash((unsigned)(__PTRDIFF_TYPE__)p);
}
static constexpr bool is_trivial() { return true; }
static bool equals(const T* a, const T* b) { return a == b; }
};
}
using AK::GenericTraits;
using AK::Traits;
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