TypeHash.h File Reference

#include "CoreTypes.h"
#include "Templates/Requires.h"
#include "Misc/Crc.h"
#include <stdint.h>
#include <type_traits>

Go to the source code of this file.

Namespaces
namespace	UE
namespace	UE::Private

Functions
uint32	UE::Private::MurmurFinalize32 (uint32 Hash)
constexpr uint32	HashCombine (uint32 A, uint32 C)
template<typename... Types>
constexpr uint32	HashCombine (uint32 A, Types... Vals)
constexpr uint32	HashCombineFast (uint32 A, uint32 B)
template<typename... Types>
constexpr uint32	HashCombineFast (uint32 A, Types... Vals)
uint32	PointerHash (const void *Key)
uint32	PointerHash (const void *Key, uint32 C)
template<typename ScalarType , std::enable_if_t< std::is_scalar_v< ScalarType > &&!std::is_same_v< ScalarType, TCHAR * > &&!std::is_same_v< ScalarType, const TCHAR * > > * = nullptr>
uint32	GetTypeHash (ScalarType Value)
template<typename T , uint32 N, std::enable_if_t<!std::is_same_v< const T, const TCHAR > > * = nullptr>
uint32	GetTypeHash (T(&Array)[N])
template<typename T , std::enable_if_t< std::is_same_v< const T, const TCHAR > > * = nullptr>
uint32	GetTypeHash (T *Value)
template<typename T >
uint32	GetArrayHash (const T *Ptr, uint64 Size, uint32 PreviousHash=0)
template<typename T >
UE_FORCEINLINE_HINT uint32	GetTypeHashHelper (const T &V)
template<typename BuilderType , typename ArgType >
void	DispatchAppendHash (BuilderType &Builder, const ArgType &Arg)

Function Documentation

DispatchAppendHash()

template<typename BuilderType , typename ArgType >

void DispatchAppendHash ( BuilderType &  Builder, const ArgType &  Arg  )

inline

GetArrayHash()

template<typename T >

uint32 GetArrayHash ( const T *  Ptr, uint64  Size, uint32  PreviousHash = 0  )

inline

GetTypeHash() [1/3]

template<typename ScalarType , std::enable_if_t< std::is_scalar_v< ScalarType > &&!std::is_same_v< ScalarType, TCHAR * > &&!std::is_same_v< ScalarType, const TCHAR * > > * = nullptr>

uint32 GetTypeHash ( ScalarType  Value )

inline

GetTypeHash() [2/3]

template<typename T , std::enable_if_t< std::is_same_v< const T, const TCHAR > > * = nullptr>

uint32 GetTypeHash ( T *  Value )

inline

GetTypeHash() [3/3]

template<typename T , uint32 N, std::enable_if_t<!std::is_same_v< const T, const TCHAR > > * = nullptr>

uint32 GetTypeHash ( T(&)  Array[N] )

inline

GetTypeHashHelper()

template<typename T >

UE_FORCEINLINE_HINT uint32 GetTypeHashHelper

(

const T &

V

)

HashCombine() [1/2]

template<typename... Types>

constexpr uint32 HashCombine ( uint32  A, Types...  Vals  )

inlineconstexpr

HashCombine() [2/2]

constexpr uint32 HashCombine ( uint32  A, uint32  C  )

inlineconstexpr

Combines two hash values to get a third. Note - this function is not commutative.

This function cannot change for backward compatibility reasons. You may want to choose HashCombineFast for a better in-memory hash combining function.

HashCombineFast() [1/2]

template<typename... Types>

constexpr uint32 HashCombineFast ( uint32  A, Types...  Vals  )

inlineconstexpr

HashCombineFast() [2/2]

constexpr uint32 HashCombineFast ( uint32  A, uint32  B  )

inlineconstexpr

Combines two hash values to get a third. Note - this function is not commutative.

WARNING! This function is subject to change and should only be used for creating combined hash values which don't leave the running process, e.g. GetTypeHash() overloads.

PointerHash() [1/2]

uint32 PointerHash ( const void *  Key )

inline

PointerHash() [2/2]

uint32 PointerHash ( const void *  Key, uint32  C  )

inline