// TJP COPYRIGHT HEADER

#pragma once

#include <tjp/core/types/Types.h>

namespace tjp {
namespace core {

u32 hash32(const u8 *begin, size_t size);
u64 hash64(const u8 *begin, size_t size);

template<typename T>
T hash(const u8 *begin, size_t size);

template<typename T, typename U>
T hash_of(const U &u)
{
	auto *begin_ = u.data();
	auto *end_ = begin_ + u.size();
	
	auto *begin = (u8 *)begin_;
	auto *end = (u8 *)end_;
	
	return hash<T>(begin, (end - begin));
}

template<typename T, typename U>
T hash_of_value(const U &u)
{
	auto *begin_ = &u;
	auto *end_ = begin_ + sizeof(u);
	
	auto *begin = (u8 *)begin_;
	auto *end = (u8 *)end_;
	
	return hash<T>(begin, (end - begin));
}

template<>
inline
u32 hash<u32>(const u8 *begin, size_t size) { return hash32(begin, size); }

template<>
inline
s32 hash<s32>(const u8 *begin, size_t size) { return hash32(begin, size); }

template<>
inline
u64 hash<u64>(const u8 *begin, size_t size) { return hash64(begin, size); }

template<>
inline
s64 hash<s64>(const u8 *begin, size_t size) { return hash64(begin, size); }

} // namespace
} // namespace