StructTypeBitSet.h File Reference

#include "Containers/BitArray.h"
#include "Misc/StringOutputDevice.h"
#include "StructUtils/StructUtilsTypes.h"
#include "StructUtils/InstancedStruct.h"
#include "Templates/FunctionFwd.h"

Go to the source code of this file.

Classes
struct	FStructTypeBitSet::FConstBitSetContainer
struct	FStructTypeBitSet::FBitSetContainer
struct	FStructTracker
struct	TTypeBitSetBase< TImplementation, TBaseStruct, TStructType, TBitSetContainer, bTestInheritanceAtRuntime >
struct	TTypeBitSetBase< TImplementation, TBaseStruct, TStructType, TBitSetContainer, bTestInheritanceAtRuntime >::FIndexIterator
struct	TStructTypeBitSet< TBaseStruct, TStructTrackerWrapper, TUStructType >

Namespaces
namespace	FStructTypeBitSet

Macros
#define	UE_API   COREUOBJECT_API
#define	_DECLARE_TYPEBITSET_IMPL(EXPORTED_API, ContainerTypeName, BaseType, BaseUStructType)
#define	DECLARE_STRUCTTYPEBITSET_EXPORTED(EXPORTED_API, ContainerTypeName, BaseStructType)   _DECLARE_TYPEBITSET_IMPL(EXPORTED_API, ContainerTypeName, BaseStructType, UScriptStruct)
#define	DECLARE_STRUCTTYPEBITSET(ContainerTypeName, BaseStructType)   _DECLARE_TYPEBITSET_IMPL(, ContainerTypeName, BaseStructType, UScriptStruct)
#define	DECLARE_CLASSTYPEBITSET_EXPORTED(EXPORTED_API, ContainerTypeName, BaseStructType)   _DECLARE_TYPEBITSET_IMPL(EXPORTED_API, ContainerTypeName, BaseStructType, UClass)
#define	DECLARE_CLASSTYPEBITSET(ContainerTypeName, BaseStructType)   _DECLARE_TYPEBITSET_IMPL(, ContainerTypeName, BaseStructType, UClass)
#define	DEFINE_TYPEBITSET(ContainerTypeName)    FStructTracker ContainerTypeName##StructTrackerWrapper::StructTracker([](){ return UE::StructUtils::GetAsUStruct<ContainerTypeName##StructTrackerWrapper::FBaseStructType>();});

Macro Definition Documentation

_DECLARE_TYPEBITSET_IMPL

#define _DECLARE_TYPEBITSET_IMPL	(		EXPORTED_API,
			ContainerTypeName,
			BaseType,
			BaseUStructType
	)

Value:

    struct ContainerTypeName##StructTrackerWrapper \
    { \
        using FBaseStructType = BaseType; \
        EXPORTED_API static FStructTracker StructTracker; \
    }; \
    using ContainerTypeName = TStructTypeBitSet<BaseType, ContainerTypeName##StructTrackerWrapper, BaseUStructType>; \
	static_assert(std::is_move_constructible_v<ContainerTypeName> && std::is_move_assignable_v<ContainerTypeName>)

We're declaring StructTracker this way rather than being a static member variable of TStructTypeBitSet to avoid linking issues. We've run into all sorts of issues depending on compiler and whether strict mode was on, and this is the best way we could come up with to solve it. Thankfully the user doesn't need to even know about this class's existence as long as they are using the macros below.

DECLARE_CLASSTYPEBITSET

#define DECLARE_CLASSTYPEBITSET	(		ContainerTypeName,
			BaseStructType
	)		_DECLARE_TYPEBITSET_IMPL(, ContainerTypeName, BaseStructType, UClass)

DECLARE_CLASSTYPEBITSET_EXPORTED

#define DECLARE_CLASSTYPEBITSET_EXPORTED	(		EXPORTED_API,
			ContainerTypeName,
			BaseStructType
	)		_DECLARE_TYPEBITSET_IMPL(EXPORTED_API, ContainerTypeName, BaseStructType, UClass)

DECLARE_STRUCTTYPEBITSET

#define DECLARE_STRUCTTYPEBITSET	(		ContainerTypeName,
			BaseStructType
	)		_DECLARE_TYPEBITSET_IMPL(, ContainerTypeName, BaseStructType, UScriptStruct)

DECLARE_STRUCTTYPEBITSET_EXPORTED

#define DECLARE_STRUCTTYPEBITSET_EXPORTED	(		EXPORTED_API,
			ContainerTypeName,
			BaseStructType
	)		_DECLARE_TYPEBITSET_IMPL(EXPORTED_API, ContainerTypeName, BaseStructType, UScriptStruct)

DEFINE_TYPEBITSET

#define DEFINE_TYPEBITSET

(

ContainerTypeName

)

FStructTracker ContainerTypeName##StructTrackerWrapper::StructTracker([](){ return UE::StructUtils::GetAsUStruct<ContainerTypeName##StructTrackerWrapper::FBaseStructType>();});

UE_API

#define UE_API   COREUOBJECT_API