C++ UProperty::HasAnyPropertyFlags方法代码示例

void UBehaviorTreeGraphNode::DiffProperties(UStruct* Struct, void* DataA, void* DataB, FDiffResults& Results, FDiffSingleResult& Diff)
{
    for (TFieldIterator<UProperty> PropertyIt(Struct, EFieldIteratorFlags::IncludeSuper); PropertyIt; ++PropertyIt)
    {
        UProperty* Prop = *PropertyIt;
        // skip properties we cant see
        if (!Prop->HasAnyPropertyFlags(CPF_Edit|CPF_BlueprintVisible) ||
                Prop->HasAnyPropertyFlags(CPF_Transient) ||
                Prop->HasAnyPropertyFlags(CPF_DisableEditOnInstance) ||
                Prop->IsA(UFunction::StaticClass()) ||
                Prop->IsA(UDelegateProperty::StaticClass()) ||
                Prop->IsA(UMulticastDelegateProperty::StaticClass()))
        {
            continue;
        }

        FString ValueStringA = BlueprintNodeHelpers::DescribeProperty(Prop, Prop->ContainerPtrToValuePtr<uint8>(DataA));
        FString ValueStringB  = BlueprintNodeHelpers::DescribeProperty(Prop, Prop->ContainerPtrToValuePtr<uint8>(DataB));

        if ( ValueStringA != ValueStringB )
        {
            if(Results)
            {
                Diff.DisplayString = FText::Format(LOCTEXT("DIF_NodePropertyFmt", "Property Changed: {0} "), FText::FromString(Prop->GetName()));
                Results.Add(Diff);
            }
        }
    }
}

	void CollectPropertyData(const UObject* Ob, const UClass* StopAtClass, TArray<UProperty*>& PropertyData)
	{
		UE_LOG(LogBehaviorTree, Verbose, TEXT("Looking for runtime properties of class: %s"), *GetNameSafe(Ob->GetClass()));

		PropertyData.Reset();
		for (UProperty* TestProperty = Ob->GetClass()->PropertyLink; TestProperty; TestProperty = TestProperty->PropertyLinkNext)
		{
			// stop when reaching base class
			if (TestProperty->GetOuter() == StopAtClass)
			{
				break;
			}

			// skip properties without any setup data
			if (TestProperty->HasAnyPropertyFlags(CPF_Transient) ||
				TestProperty->HasAnyPropertyFlags(CPF_DisableEditOnInstance) == false)
			{
				continue;
			}

			// serialize only simple types
			if (CanUsePropertyType(TestProperty))
			{
				UE_LOG(LogBehaviorTree, Verbose, TEXT("> name: '%s'"), *GetNameSafe(TestProperty));
				PropertyData.Add(TestProperty);
			}
		}
	}

	FString CollectPropertyDescription(const UObject* Ob, const UClass* StopAtClass, const TArray<UProperty*>& PropertyData)
	{
		FString RetString;
		for (UProperty* TestProperty = Ob->GetClass()->PropertyLink; TestProperty; TestProperty = TestProperty->PropertyLinkNext)
		{
			// stop when reaching base class
			if (TestProperty->GetOuter() == StopAtClass)
			{
				break;
			}

			// skip properties without any setup data	
			if (TestProperty->HasAnyPropertyFlags(CPF_Transient) ||
				TestProperty->HasAnyPropertyFlags(CPF_DisableEditOnInstance) ||
				PropertyData.Contains(TestProperty))
			{
				continue;
			}

			if (TestProperty->IsA(UClassProperty::StaticClass()) ||
				TestProperty->IsA(UStructProperty::StaticClass()) ||
				CanUsePropertyType(TestProperty))
			{
				if (RetString.Len())
				{
					RetString.AppendChar(TEXT('\n'));
				}

				const uint8* PropData = TestProperty->ContainerPtrToValuePtr<uint8>(Ob);
				RetString += DescribeProperty(TestProperty, PropData);
			}
		}

		return RetString;
	}

bool UK2Node::CreatePinsForFunctionEntryExit(const UFunction* Function, bool bForFunctionEntry)
{
	const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();

	// Create the inputs and outputs
	bool bAllPinsGood = true;
	for (TFieldIterator<UProperty> PropIt(Function); PropIt && (PropIt->PropertyFlags & CPF_Parm); ++PropIt)
	{
		UProperty* Param = *PropIt;

		const bool bIsFunctionInput = !Param->HasAnyPropertyFlags(CPF_OutParm) || Param->HasAnyPropertyFlags(CPF_ReferenceParm);

		if (bIsFunctionInput == bForFunctionEntry)
		{
			const EEdGraphPinDirection Direction = bForFunctionEntry ? EGPD_Output : EGPD_Input;

			UEdGraphPin* Pin = CreatePin(Direction, TEXT(""), TEXT(""), NULL, false, false, Param->GetName());
			const bool bPinGood = K2Schema->ConvertPropertyToPinType(Param, /*out*/ Pin->PinType);
			K2Schema->SetPinDefaultValueBasedOnType(Pin);
			
			UK2Node_CallFunction::GeneratePinTooltipFromFunction(*Pin, Function);

			bAllPinsGood = bAllPinsGood && bPinGood;
		}
	}

	return bAllPinsGood;
}

void UK2Node_SpawnActor::CreatePinsForClass(UClass* InClass)
{
	check(InClass != NULL);

	const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();

	for (TFieldIterator<UProperty> PropertyIt(InClass, EFieldIteratorFlags::IncludeSuper); PropertyIt; ++PropertyIt)
	{
		UProperty* Property = *PropertyIt;
		UClass* PropertyClass = CastChecked<UClass>(Property->GetOuter());
		const bool bIsDelegate = Property->IsA(UMulticastDelegateProperty::StaticClass());
		const bool bIsExposedToSpawn = UEdGraphSchema_K2::IsPropertyExposedOnSpawn(Property);
		const bool bIsSettableExternally = !Property->HasAnyPropertyFlags(CPF_DisableEditOnInstance);

		if(	bIsExposedToSpawn &&
			!Property->HasAnyPropertyFlags(CPF_Parm) && 
			bIsSettableExternally &&
			Property->HasAllPropertyFlags(CPF_BlueprintVisible) &&
			!bIsDelegate )
		{
			UEdGraphPin* Pin = CreatePin(EGPD_Input, TEXT(""), TEXT(""), NULL, false, false, Property->GetName());
			const bool bPinGood = (Pin != NULL) && K2Schema->ConvertPropertyToPinType(Property, /*out*/ Pin->PinType);	
		}
	}

	// Change class of output pin
	UEdGraphPin* ResultPin = GetResultPin();
	ResultPin->PinType.PinSubCategoryObject = InClass;
}

bool FJsonObjectConverter::UStructToJsonObject(const UStruct* StructDefinition, const void* Struct, TSharedRef<FJsonObject> OutJsonObject, int64 CheckFlags, int64 SkipFlags)
{
	for(TFieldIterator<UProperty> It(StructDefinition); It; ++It)
	{
		UProperty* Property = *It;

		// Check to see if we should ignore this property
		if (CheckFlags != 0 && !Property->HasAnyPropertyFlags(CheckFlags))
		{
			continue;
		}
		if (Property->HasAnyPropertyFlags(SkipFlags))
		{
			continue;
		}

		FString VariableName = StandardizeCase(Property->GetName());
		const void* Value = Property->ContainerPtrToValuePtr<uint8>(Struct);

		// convert the property to a FJsonValue
		TSharedPtr<FJsonValue> JsonValue = UPropertyToJsonValue(Property, Value, CheckFlags, SkipFlags);
		if (!JsonValue.IsValid())
		{
			UClass* PropClass = Property->GetClass();
			UE_LOG(LogJson, Error, TEXT("UStructToJsonObject - Unhandled property type '%s': %s"), *PropClass->GetName(), *Property->GetPathName());
			return false;
		}

		// set the value on the output object
		OutJsonObject->SetField(VariableName, JsonValue);
	}

	return true;
}

	void CollectBlackboardSelectors(const UObject* Ob, const UClass* StopAtClass, TArray<FName>& KeyNames)
	{
		for (UProperty* TestProperty = Ob->GetClass()->PropertyLink; TestProperty; TestProperty = TestProperty->PropertyLinkNext)
		{
			// stop when reaching base class
			if (TestProperty->GetOuter() == StopAtClass)
			{
				break;
			}

			// skip properties without any setup data	
			if (TestProperty->HasAnyPropertyFlags(CPF_Transient) ||
				TestProperty->HasAnyPropertyFlags(CPF_DisableEditOnInstance))
			{
				continue;
			}

			const UStructProperty* StructProp = Cast<const UStructProperty>(TestProperty);
			if (StructProp && StructProp->GetCPPType(NULL, CPPF_None).Contains(GET_STRUCT_NAME_CHECKED(FBlackboardKeySelector)))
			{
				const FBlackboardKeySelector* PropData = TestProperty->ContainerPtrToValuePtr<FBlackboardKeySelector>(Ob);
				KeyNames.AddUnique(PropData->SelectedKeyName);
			}
		}
	}

bool FJsonObjectConverter::JsonAttributesToUStruct(const TMap< FString, TSharedPtr<FJsonValue> >& JsonAttributes, const UStruct* StructDefinition, void* OutStruct, int64 CheckFlags, int64 SkipFlags)
{
	if (StructDefinition == FJsonObjectWrapper::StaticStruct())
	{
		// Just copy it into the object
		FJsonObjectWrapper* ProxyObject = (FJsonObjectWrapper *)OutStruct;
		ProxyObject->JsonObject = MakeShareable(new FJsonObject());
		ProxyObject->JsonObject->Values = JsonAttributes;
		return true;
	}

	// iterate over the struct properties
	for(TFieldIterator<UProperty> PropIt(StructDefinition); PropIt; ++PropIt)
	{
		UProperty* Property = *PropIt;
		FString PropertyName = Property->GetName();

		// Check to see if we should ignore this property
		if (CheckFlags != 0 && !Property->HasAnyPropertyFlags(CheckFlags))
		{
			continue;
		}
		if (Property->HasAnyPropertyFlags(SkipFlags))
		{
			continue;
		}

		// find a json value matching this property name
		TSharedPtr<FJsonValue> JsonValue;
		for (auto It = JsonAttributes.CreateConstIterator(); It; ++It)
		{
			// use case insensitive search sincd FName may change caseing strangely on us
			if (PropertyName.Equals(It.Key(), ESearchCase::IgnoreCase))
			{
				JsonValue = It.Value();
				break;
			}
		}
		if (!JsonValue.IsValid() || JsonValue->IsNull())
		{
			// we allow values to not be found since this mirrors the typical UObject mantra that all the fields are optional when deserializing
			continue;
		}

		void* Value = Property->ContainerPtrToValuePtr<uint8>(OutStruct);
		if (!JsonValueToUProperty(JsonValue, Property, Value, CheckFlags, SkipFlags))
		{
			UE_LOG(LogJson, Error, TEXT("JsonObjectToUStruct - Unable to parse %s.%s from JSON"), *StructDefinition->GetName(), *PropertyName);
			return false;
		}
	}
	
	return true;
}

bool FJsonObjectConverter::UStructToJsonAttributes(const UStruct* StructDefinition, const void* Struct, TMap< FString, TSharedPtr<FJsonValue> >& OutJsonAttributes, int64 CheckFlags, int64 SkipFlags, const CustomExportCallback* ExportCb)
{
	if (SkipFlags == 0)
	{
		// If we have no specified skip flags, skip deprecated by default when writing
		SkipFlags |= CPF_Deprecated;
	}

	if (StructDefinition == FJsonObjectWrapper::StaticStruct())
	{
		// Just copy it into the object
		const FJsonObjectWrapper* ProxyObject = (const FJsonObjectWrapper *)Struct;

		if (ProxyObject->JsonObject.IsValid())
		{
			OutJsonAttributes = ProxyObject->JsonObject->Values;
		}
		return true;
	}

	for (TFieldIterator<UProperty> It(StructDefinition); It; ++It)
	{
		UProperty* Property = *It;

		// Check to see if we should ignore this property
		if (CheckFlags != 0 && !Property->HasAnyPropertyFlags(CheckFlags))
		{
			continue;
		}
		if (Property->HasAnyPropertyFlags(SkipFlags))
		{
			continue;
		}

		FString VariableName = StandardizeCase(Property->GetName());
		const void* Value = Property->ContainerPtrToValuePtr<uint8>(Struct);

		// convert the property to a FJsonValue
		TSharedPtr<FJsonValue> JsonValue = UPropertyToJsonValue(Property, Value, CheckFlags, SkipFlags, ExportCb);
		if (!JsonValue.IsValid())
		{
			UClass* PropClass = Property->GetClass();
			UE_LOG(LogJson, Error, TEXT("UStructToJsonObject - Unhandled property type '%s': %s"), *PropClass->GetName(), *Property->GetPathName());
			return false;
		}

		// set the value on the output object
		OutJsonAttributes.Add(VariableName, JsonValue);
	}

	return true;
}

void UGatherTextFromMetaDataCommandlet::GatherTextFromUObjects(const TArray<FString>& IncludePaths, const TArray<FString>& ExcludePaths, const FGatherParameters& Arguments)
{
	const FFuzzyPathMatcher FuzzyPathMatcher = FFuzzyPathMatcher(IncludePaths, ExcludePaths);

	for(TObjectIterator<UField> It; It; ++It)
	{
		// Skip editor-only properties if we're not gathering for editor-only data.
		UProperty* Property = Cast<UProperty>(*It);
		if (Property && !ShouldGatherFromEditorOnlyData && Property->HasAnyPropertyFlags(CPF_EditorOnly))
		{
			continue;
		}

		FString SourceFilePath;
		FSourceCodeNavigation::FindClassHeaderPath(*It, SourceFilePath);
		SourceFilePath = FPaths::ConvertRelativePathToFull(SourceFilePath);

		check(!SourceFilePath.IsEmpty());

		const FFuzzyPathMatcher::EPathMatch PathMatch = FuzzyPathMatcher.TestPath(SourceFilePath);
		if (PathMatch != FFuzzyPathMatcher::Included)
		{
			continue;
		}

		GatherTextFromUObject(*It, Arguments);
	}
}

void FNodeHandlingFunctor::ResolveAndRegisterScopedTerm(FKismetFunctionContext& Context, UEdGraphPin* Net, TIndirectArray<FBPTerminal>& NetArray)
{
	// Determine the scope this takes place in
	UStruct* SearchScope = Context.Function;

	UEdGraphPin* SelfPin = CompilerContext.GetSchema()->FindSelfPin(*(Net->GetOwningNode()), EGPD_Input);
	if (SelfPin != NULL)
	{
		SearchScope = Context.GetScopeFromPinType(SelfPin->PinType, Context.NewClass);
	}

	// Find the variable in the search scope
	UProperty* BoundProperty = FKismetCompilerUtilities::FindPropertyInScope(SearchScope, Net, CompilerContext.MessageLog, CompilerContext.GetSchema(), Context.NewClass);
	if (BoundProperty != NULL)
	{
		// Create the term in the list
		FBPTerminal* Term = new (NetArray) FBPTerminal();
		Term->CopyFromPin(Net, Net->PinName);
		Term->AssociatedVarProperty = BoundProperty;
		Context.NetMap.Add(Net, Term);

		// Read-only variables and variables in const classes are both const
		if (BoundProperty->HasAnyPropertyFlags(CPF_BlueprintReadOnly) || Context.IsConstFunction())
		{
			Term->bIsConst = true;
		}

		// Resolve the context term
		if (SelfPin != NULL)
		{
			FBPTerminal** pContextTerm = Context.NetMap.Find(FEdGraphUtilities::GetNetFromPin(SelfPin));
			Term->Context = (pContextTerm != NULL) ? *pContextTerm : NULL;
		}
	}
}

void UDeveloperSettings::ImportConsoleVariableValues()
{
	for (UProperty* Property = GetClass()->PropertyLink; Property; Property = Property->PropertyLinkNext)
	{
		if (!Property->HasAnyPropertyFlags(CPF_Config))
		{
			continue;
		}

		FString CVarName = Property->GetMetaData(DeveloperSettingsConsoleVariableMetaFName);
		if (!CVarName.IsEmpty())
		{
			IConsoleVariable* CVar = IConsoleManager::Get().FindConsoleVariable(*CVarName);
			if (CVar)
			{
				if (Property->ImportText(*CVar->GetString(), Property->ContainerPtrToValuePtr<uint8>(this, 0), PPF_ConsoleVariable, this) == NULL)
				{
					UE_LOG(LogTemp, Error, TEXT("%s import failed for %s on console variable %s (=%s)"), *GetClass()->GetName(), *Property->GetName(), *CVarName, *CVar->GetString());
				}
			}
			else
			{
				UE_LOG(LogTemp, Fatal, TEXT("%s failed to find console variable %s for %s"), *GetClass()->GetName(), *CVarName, *Property->GetName());
			}
		}
	}
}

void AActor::ResetPropertiesForConstruction()
{
	// Get class CDO
	AActor* Default = GetClass()->GetDefaultObject<AActor>();
	// RandomStream struct name to compare against
	const FName RandomStreamName(TEXT("RandomStream"));

	// We don't want to reset references to world object
	const bool bIsLevelScriptActor = IsA(ALevelScriptActor::StaticClass());

	// Iterate over properties
	for( TFieldIterator<UProperty> It(GetClass()) ; It ; ++It )
	{
		UProperty* Prop = *It;
		UStructProperty* StructProp = Cast<UStructProperty>(Prop);
		UClass* PropClass = CastChecked<UClass>(Prop->GetOuter()); // get the class that added this property

		// First see if it is a random stream, if so reset before running construction script
		if( (StructProp != NULL) && (StructProp->Struct != NULL) && (StructProp->Struct->GetFName() == RandomStreamName) )
		{
			FRandomStream* StreamPtr =  StructProp->ContainerPtrToValuePtr<FRandomStream>(this);
			StreamPtr->Reset();
		}
		// If it is a blueprint added variable that is not editable per-instance, reset to default before running construction script
		else if( !bIsLevelScriptActor 
				&& Prop->HasAnyPropertyFlags(CPF_DisableEditOnInstance)
				&& PropClass->HasAnyClassFlags(CLASS_CompiledFromBlueprint) 
				&& !Prop->IsA(UDelegateProperty::StaticClass()) 
				&& !Prop->IsA(UMulticastDelegateProperty::StaticClass()) )
		{
			Prop->CopyCompleteValue_InContainer(this, Default);
		}
	}
}

bool FPropertyTableColumn::CanSortBy() const
{
	TWeakObjectPtr< UObject > Object = DataSource->AsUObject();
	UProperty* Property = Cast< UProperty >( Object.Get() );

	TSharedPtr< FPropertyPath > Path = DataSource->AsPropertyPath();
	if ( Property == NULL && Path.IsValid() )
	{
		Property = Path->GetLeafMostProperty().Property.Get();
	}

	if ( Property != NULL )
	{
		return Property->IsA( UByteProperty::StaticClass() )  ||
			Property->IsA( UIntProperty::StaticClass() )   ||
			Property->IsA( UBoolProperty::StaticClass() )  ||
			Property->IsA( UFloatProperty::StaticClass() ) ||
			Property->IsA( UNameProperty::StaticClass() )  ||
			Property->IsA( UStrProperty::StaticClass() )   ||
			( Property->IsA( UObjectProperty::StaticClass() ) && !Property->HasAnyPropertyFlags(CPF_InstancedReference) );
			//Property->IsA( UTextProperty::StaticClass() );
	}

	return false;
}

void GetKeyablePropertyPaths(UClass* Class, UStruct* PropertySource, TArray<UProperty*>& PropertyPath, FSequencer& Sequencer, TArray<TArray<UProperty*>>& KeyablePropertyPaths)
{
	//@todo need to resolve this between UMG and the level editor sequencer
	const bool bRecurseAllProperties = Sequencer.IsLevelEditorSequencer();

	for (TFieldIterator<UProperty> PropertyIterator(PropertySource); PropertyIterator; ++PropertyIterator)
	{
		UProperty* Property = *PropertyIterator;

		if (Property && !Property->HasAnyPropertyFlags(CPF_Deprecated))
		{
			PropertyPath.Add(Property);

			bool bIsPropertyKeyable = Sequencer.CanKeyProperty(FCanKeyPropertyParams(Class, PropertyPath));
			if (bIsPropertyKeyable)
			{
				KeyablePropertyPaths.Add(PropertyPath);
			}

			if (!bIsPropertyKeyable || bRecurseAllProperties)
			{
				UStructProperty* StructProperty = Cast<UStructProperty>(Property);
				if (StructProperty != nullptr)
				{
					GetKeyablePropertyPaths(Class, StructProperty->Struct, PropertyPath, Sequencer, KeyablePropertyPaths);
				}
			}

			PropertyPath.RemoveAt(PropertyPath.Num() - 1);
		}
	}
}