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  3. FProperty

FProperty

An UnrealScript variable.

API > API/Runtime > API/Runtime/CoreUObject > API/Runtime/CoreUObject/UObject

Inheritance Hierarchy

References

   
Module CoreUObject
Header /Engine/Source/Runtime/CoreUObject/Public/UObject/UnrealType.h
Include #include "UObject/UnrealType.h"

Syntax

class FProperty : public FField

Remarks

An UnrealScript variable.

Variables

  Type Name Description
Public variable int32 ArrayDim Persistent variables.
Public variable FProperty * DestructorLinkNext In memory only: Linked list of properties requiring destruction.
Public variable int32 ElementSize  
Public variable FProperty * NextRef In memory only: Linked list of object reference properties from most-derived to base
Public variable FProperty * PostConstructLinkNext In memory only: Linked list of properties requiring post constructor initialization.
Public variable EPropertyFlags PropertyFlags  
Public variable FProperty * PropertyLinkNext In memory only: Linked list of properties from most-derived to base
Public variable uint16 RepIndex  
Public variable FName RepNotifyFunc  

Constructors

  Type Name Description
Public function  

FProperty ( UField* InField
)

  
Public function  

FProperty ( EInternal InInernal,
FFieldClass* InClass
)

  
Public function  

FProperty ( FFieldVariant InOwner,
const FName& InName,
EObjectFlags InObjectFlags
)

 Constructors.
Public function  

FProperty ( FFieldVariant InOwner,
const UECodeGen_Private::FPropertyParamsBaseWithOffset& Prop,
EPropertyFlags AdditionalPropertyFlags
)

 Constructor used for constructing compiled-in properties
Public function  

FProperty ( FFieldVariant InOwner,
const UECodeGen_Private::FPropertyParamsBaseWithoutOffset& Prop,
EPropertyFlags AdditionalPropertyFlags
)

 Constructor used for constructing compiled-in properties

Functions

  Type Name Description
Public function Const void * Allocates and initializes memory to hold a value this property represents
Public function Virtual Const void

AppendSchemaHash ( FBlake3& Builder,
bool bSkipEditorOnly
)

 Updates the given HashBuilder with name and type information of this Property.
Public function Virtual Const void

CallGetter ( const void* Container,
void* OutValue
)

 Calls the native getter function for this property
Public function Virtual Const void

CallSetter ( void* Container,
const void* InValue
)

 Calls the native setter function for this property
Public function Virtual Const bool Returns true if the type of this property matches the type name.
Public function Virtual Const void Set the value to it's special unset state.
Public function void

ClearPropertyFlags ( EPropertyFlags NewFlags
)

  
Public function Const void

ClearValue ( void* Data
)

 Zeros the value for this property.
Public function Const void

ClearValue_InContainer ( void* Data,
int32 ArrayIndex
)

 Zeros the value for this property.
Protected function Virtual Const void

ClearValueInternal ( void* Data
)

  
Public function Static FField *

Construct ( const FFieldVariant& InOwner,
const FName& InName,
EObjectFlags InObjectFlags
)

  
Public function Const ValueType const *

ContainerPtrToValuePtr ( UObject const* ContainerPtr,
int32 ArrayIndex
)

  
Public function Const ValueType const *

ContainerPtrToValuePtr ( void const* ContainerPtr,
int32 ArrayIndex
)

  
Public function Const ValueType *

ContainerPtrToValuePtr ( void* ContainerPtr,
int32 ArrayIndex
)

  
Public function Const ValueType *

ContainerPtrToValuePtr ( UObject* ContainerPtr,
int32 ArrayIndex
)

 Get the pointer to property value in a supplied 'container'.
Public function Const ValueType const *

ContainerPtrToValuePtrForDefaults ( UStruct* ContainerClass,
UObject const* ContainerPtr,
int32 ArrayIndex
)

  
Public function Const ValueType *

ContainerPtrToValuePtrForDefaults ( UStruct* ContainerClass,
void* ContainerPtr,
int32 ArrayIndex
)

  
Public function Const ValueType *

ContainerPtrToValuePtrForDefaults ( UStruct* ContainerClass,
UObject* ContainerPtr,
int32 ArrayIndex
)

 Default variants, these accept and return NULL, and also check the property against the size of the container.
Public function Const ValueType const *

ContainerPtrToValuePtrForDefaults ( UStruct* ContainerClass,
void const* ContainerPtr,
int32 ArrayIndex
)

  
Protected function Virtual Const bool

ContainsClearOnFinishDestroyInternal ( TArray< const FStructProperty* >& EncounteredStructProps
)

  
Public function Const bool

ContainsFinishDestroy ( TArray< const FStructProperty* >& EncounteredStructProps
)

 Returns true if the property or any of the child properties should be cleared on FinishDestroy.
Public function Const bool Returns true if this property, or in the case of e.g. array or struct properties any sub- property, contains a UObject reference that is marked CPF_NeedCtorLink (i.e. instanced keyword).
Public function Virtual Const bool

ContainsObjectReference ( TArray< const FStructProperty* >& EncounteredStructProps,
EPropertyObjectReferenceType InReferenceType
)

 Returns true if this property, or in the case of e.g. array or struct properties any sub- property, contains a UObject reference.
Public function Const bool Returns true if this property, or in the case of e.g. array or struct properties any sub- property, contains a weak UObject reference.
Public function Virtual EConvertFromTypeResult

ConvertFromType ( const FPropertyTag& Tag,
FStructuredArchive::FSlot Slot,
uint8* Data,
UStruct* DefaultsStruct,
const uint8* Defaults
)

 Allows a property to implement backwards compatibility handling for tagged properties
Public function Const void

CopyCompleteValue ( void* Dest,
void const* Src
)

 Copy the value for all elements of this property.
Public function Const void

CopyCompleteValue_InContainer ( void* Dest,
void const* Src
)

  
Public function Virtual Const void

CopyCompleteValueFromScriptVM ( void* Dest,
void const* Src
)

 Copy the value for all elements of this property. From the script VM.
Public function Virtual Const void

CopyCompleteValueFromScriptVM_InContainer ( void* OutContainer,
void const* InValue
)

  
Public function Virtual Const void

CopyCompleteValueToScriptVM ( void* Dest,
void const* Src
)

 Copy the value for all elements of this property. To the script VM.
Public function Virtual Const void

CopyCompleteValueToScriptVM_InContainer ( void* OutValue,
void const* InContainer
)

 Equivalent to the above functions, but using the container and aware of getters/setters when the container has them.
Public function Const void

CopySingleValue ( void* Dest,
void const* Src
)

 Copy the value for a single element of this property.
Public function Virtual Const void

CopySingleValueFromScriptVM ( void* Dest,
void const* Src
)

 Copy the value for a single element of this property. From the script VM.
Public function Virtual Const void

CopySingleValueToScriptVM ( void* Dest,
void const* Src
)

 Copy the value for a single element of this property. To the script VM.
Protected function Virtual Const void

CopyValuesInternal ( void* Dest,
void const* Src,
int32 Count
)

  
Public function Const void

DestroyAndFreeValue ( void* InMemory
)

 Destroys and frees memory with a value this property represents
Public function Const void

DestroyValue ( void* Dest
)

 Destroys the value for this property.
Public function Const void

DestroyValue_InContainer ( void* Dest
)

 Destroys the value for this property.
Protected function Virtual Const void

DestroyValueInternal ( void* Dest
)

  
Public function Virtual void

EmitIntrusiveOptionalReferenceInfo ( UE::GC::FSchemaBuilder& Schema,
int32 BaseOffset,
TArray< const FStructProperty* >& EncounteredStructProps,
UE::GC::FPropertyStack& DebugPath
)

 For properties returning true from HasIntrusiveUnsetOptionalState which also contain object references, emit information for the garbage collector to safely gather the references from the value whether the optional value is set or unset.
Public function Virtual void

EmitReferenceInfo ( UE::GC::FSchemaBuilder& Schema,
int32 BaseOffset,
TArray< const FStructProperty* >& EncounteredStructProps,
UE::GC::FPropertyStack& DebugPath
)

 Emits tokens used by realtime garbage collection code to passed in ReferenceTokenStream.
Public function Const PRAGMA_DISABLE_DEPRECATION_WARNINGS void

ExportCppDeclaration ( FOutputDevice& Out,
EExportedDeclaration::Type DeclarationType,
const TCHAR* ArrayDimOverride,
uint32 AdditionalExportCPPFlags,
bool bSkipParameterName,
const FString* ActualCppType,
const FString* ActualExtendedType,
const FString* ActualParameterName
)

  
Public function Const bool

ExportText_Direct ( FString& ValueStr,
const void* Data,
const void* Delta,
UObject* Parent,
int32 PortFlags,
UObject* ExportRootScope
)

  
Public function Const bool

ExportText_InContainer ( int32 Index,
FString& ValueStr,
const void* Data,
const void* Delta,
UObject* Parent,
int32 PortFlags,
UObject* ExportRootScope
)

  
Protected function Virtual Const void

ExportText_Internal ( FString& ValueStr,
const void* PropertyValueOrContainer,
EPropertyPointerType PointerType,
const void* DefaultValue,
UObject* Parent,
int32 PortFlags,
UObject* ExportRootScope
)

  
Public function Const void

ExportTextItem_Direct ( FString& ValueStr,
const void* PropertyValue,
const void* DefaultValue,
UObject* Parent,
int32 PortFlags,
UObject* ExportRootScope
)

  
Public function Const void

ExportTextItem_InContainer ( FString& ValueStr,
const void* Container,
const void* DefaultValue,
UObject* Parent,
int32 PortFlags,
UObject* ExportRootScope
)

  
Public function Static FName

FindRedirectedPropertyName ( const UStruct* ObjectStruct,
FName OldName
)

 Gets a redirected property name, will return NAME_None if no redirection was found
Public function Const void

FinishDestroy ( void* Data
)

 Applies appropriate finish destroy actions for the property if needed.
Public function Const void

FinishDestroy_InContainer ( void* Data
)

 Applies appropriate finish destroy actions for the property if needed.
Protected function Virtual Const void

FinishDestroyInternal ( void* Data
)

  
Public function Const ELifetimeCondition  
Public function Virtual Const PRAGMA_ENABLE_DEPRECATION_WARNINGSFString

GetCPPMacroType ( FString& ExtendedTypeText
)

  
Public function Virtual Const FString

GetCPPType ( FString* ExtendedTypeText,
uint32 CPPExportFlags
)

 Returns the text to use for exporting this property to header file.
Public function Virtual Const FString  
Public function Const int32  
Public function Virtual Const FName

GetID ()

  
Public function Const UE_INTERNALint32 Return the index of the property in its owner.
Public function Virtual Const int32  
Public function Const FString Returns the C++ name of the property, including the _DEPRECATED suffix if the property is deprecated.
Public function Const int32 Return offset of property from container base.
Public function Const int32 Return offset of property from container base.
Public function Const int32 Return offset of property from container base.
Public function Const int32 Return offset of property from container base.
Public function Const int32 Return offset of property from container base.
Public function Const const FProperty *  
Public function FProperty * Returns the first FProperty in this property's Outer chain that does not have a FProperty for an Outer
Public function Const EPropertyFlags Returns this property's propertyflags
Public function FProperty * Returns the replication owner, which is the property itself, or NULL if this isn't important for replication.
Public function Const void

GetSingleValue_InContainer ( const void* InContainer,
void* OutValue,
int32 ArrayIndex
)

 Copies a single value to OutValue even if the property represents a static array of values
Public function Const int32

GetSize ()

 @TODO: Surely this can have an int32 overflow.
Public function UPropertyWrapper * Gets the wrapper object for this property or creates one if it doesn't exist yet
Public function Const void

GetValue_InContainer ( void const* InContainer,
void* OutValue
)

  
Public function Virtual Const void *

GetValueAddressAtIndex_Direct ( const FProperty* Inner,
void* InValueAddress,
int32 Index
)

 Gets value address at given index inside of a static array or container
Public function Const uint32

GetValueTypeHash ( const void* Src
)

 Returns the hash value for an element of this property.
Protected function Virtual Const uint32

GetValueTypeHashInternal ( const void* Src
)

  
Public function Const bool

HasAllPropertyFlags ( uint64 FlagsToCheck
)

 Used to safely check whether all of the passed in flags are set.
Public function Const bool

HasAnyPropertyFlags ( uint64 FlagsToCheck
)

 Used to safely check whether any of the passed in flags are set.
Public function Virtual Const bool Checks if this property as a native getter function
Public function Virtual Const bool Returns whether this type has a special state for an unset TOptional meaning the size TOptional and T are the same.
Public function Virtual Const bool Checks if this property as a native setter function
Public function Virtual Const bool Checks if this property as a native setter or getter function
Public function Virtual Const bool

Identical ( const void* A,
const void* B,
uint32 PortFlags
)

 Determines whether the property values are identical.
Public function Const bool

Identical_InContainer ( const void* A,
const void* B,
int32 ArrayIndex,
uint32 PortFlags
)

 Determines whether the property values are identical.
Public function Static const TCHAR *

ImportSingleProperty ( const TCHAR* Str,
void* DestData,
const UStruct* ObjectStruct,
UObject* SubobjectOuter,
int32 PortFlags,
FOutputDevice* Warn,
TArray< struct FDefinedProperty >& DefinedProperties
)

 Parses and imports a text definition of a single property's value (if array, may be an individual element) also includes parsing of special operations for array properties (Add/Remove/RemoveIndex/Empty)
Public function Const const TCHAR *

ImportText_Direct ( const TCHAR* Buffer,
void* PropertyPtr,
UObject* OwnerObject,
int32 PortFlags,
FOutputDevice* ErrorText
)

 Import a text value
Public function Const const TCHAR *

ImportText_InContainer ( const TCHAR* Buffer,
void* Container,
UObject* OwnerObject,
int32 PortFlags,
FOutputDevice* ErrorText
)

 Import a text value
Protected function Virtual Const const TCHAR *

ImportText_Internal ( const TCHAR* Buffer,
void* ContainerOrPropertyPtr,
EPropertyPointerType PointerType,
UObject* OwnerObject,
int32 PortFlags,
FOutputDevice* ErrorText
)

  
Protected function void

Init ()

 Initializes internal state.
Public function Virtual Const void Initialize the value at the given address to an unset TOptional using an intrusive state rather than a trailing boolean.
Public function Const void

InitializeValue ( void* Dest
)

 Zeros, copies from the default, or calls the constructor for on the value for this property.
Public function Const void Zeros, copies from the default, or calls the constructor for on the value for this property.
Protected function Virtual Const void

InitializeValueInternal ( void* Dest
)

  
Public function Virtual void

InstanceSubobjects ( void* Data,
void const* DefaultData,
UObject* Owner,
FObjectInstancingGraph* InstanceGraph
)

 Creates new copies of components
Public function Const bool Editor-only properties are those that only are used with the editor is present or cannot be removed from serialisation.
Public function Const bool

IsInContainer ( int32 ContainerSize
)

 See if the offset of this property is below the supplied container size
Public function Const bool

IsInContainer ( const UStruct* ContainerClass
)

 See if the offset of this property is below the supplied container size
Public function Virtual Const bool

IsIntrusiveOptionalValueSet ( const void* Data
)

 Returns whether an optional value of this inner type is unset.
Public function int32

Link ( FArchive& Ar
)

  
Protected function Virtual void  
Public function void  
Public function Virtual bool Restores this property and its owned properties from the type name.
Public function Virtual Const bool

NetSerializeItem ( FArchive& Ar,
UPackageMap* Map,
void* Data,
TArray< uint8 >* MetaData
)

  
Public function Virtual Const bool  
Public function Const void

PerformOperationWithGetter ( void* OutContainer,
const void* DirectPropertyAddress,
TFunctionRef< void(const void*)> DirectValueAccessFunc
)

 Helper function for getting container / struct property value and performing operation directly on the value memory
Public function Const void

PerformOperationWithSetter ( void* OutContainer,
void* DirectPropertyAddress,
TFunctionRef< void(void*)> DirectValueAccessFunc
)

 Helper function for setting container / struct property value and performing operation directly on the value memory
Protected function Const void *

PointerToValuePtr ( void const* ContainerOrPropertyPtr,
EPropertyPointerType PropertyPointerType,
int32 ArrayIndex
)

  
Public function Virtual Const void *

ResolveVisitedPathInfo ( void* Data,
const FPropertyVisitorInfo& Info
)

 Attempt to resolve the given inner path info against this outer property to get the inner property value.
Public function Virtual Const bool

SameType ( const FProperty* Other
)

 Returns true, if Other is property of exactly the same type
Public function Virtual Const void Saves the type name of this property and its owned properties.
Public function void

SerializeBinProperty ( FStructuredArchive::FSlot Slot,
void* Data,
int32 ArrayIdx
)

 Serializes the property with the struct's data residing in Data.
Public function Virtual Const void

SerializeItem ( FStructuredArchive::FSlot Slot,
void* Value,
void const* Defaults
)

  
Public function void

SerializeNonMatchingBinProperty ( FStructuredArchive::FSlot Slot,
void* Data,
void const* DefaultData,
UStruct* DefaultStruct
)

 Serializes the property with the struct's data residing in Data, unless it matches the default
Public function void

SetBlueprintReplicationCondition ( ELifetimeCondition InBlueprintReplicationCondition
)

  
Public function void

SetElementSize ( int32 NewSize
)

 ElementSize accessors to facilitate underlying type change.
Protected function void

SetOffset_Internal ( int32 NewOffset
)

 Set the alignment offset for this property - added for FMapProperty
Public function void

SetPropertyFlags ( EPropertyFlags NewFlags
)

  
Public function Const void

SetSingleValue_InContainer ( void* OutContainer,
const void* InValue,
int32 ArrayIndex
)

 Copies a single value to the property even if the property represents a static array of values
Public function Const void

SetValue_InContainer ( void* OutContainer,
const void* InValue
)

  
Public function Const bool Determines whether this property value is eligible for copying when duplicating an object
Public function Const bool

ShouldPort ( uint32 PortFlags
)

  
Public function Const bool  
Public function Static FFieldClass *  
Public function Static uint64  
Public function Static uint64  
Public function Virtual Const bool  
Public function Virtual Const bool  
Public function Const bool

ValidateImportFlags ( uint32 PortFlags,
FOutputDevice* ErrorText
)

 Verify that modifying this property's value via ImportText is allowed.
Public function Const EPropertyVisitorControlFlow Visits this property and allows recursion into the inner properties This method allows callers to visit inner properties without knowing about its container type as opposed to TPropertyIterator.
Public function Virtual Const EPropertyVisitorControlFlow Visits this property and allows recursion into the inner properties This method allows callers to visit inner properties without knowing about its container type as opposed to TPropertyIterator.

Overridden from FField

  Type Name Description
Public function Virtual Const SIZE_T  
Public function Virtual void

PostDuplicate ( const FField& InField
)

 Fixups after duplicating a Field
Public function Virtual void Begin UObject interface: the following functions mimic UObject interface for easier transition from UProperties to FProperties.

Operators

  Type Name Description
Public function void

operator delete ( void* InMem
)

  
Public function void *

operator new ( const size_t InSize,
void* InMem
)

  
Public function void *

operator new ( const size_t InSize
)

  

Typedefs

Name Description
Super  
ThisClass  

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