bool FStructureEditorUtils::CanHaveAMemberVariableOfType(const UBlueprintGeneratedStruct* Struct, const FEdGraphPinType& VarType, FString* OutMsg)
{
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
if ((VarType.PinCategory == K2Schema->PC_Struct) && Struct)
{
if (const UScriptStruct* SubCategoryStruct = Cast<const UScriptStruct>(VarType.PinSubCategoryObject.Get()))
{
const EStructureError Result = IsStructureValid(SubCategoryStruct, Struct, OutMsg);
if (EStructureError::Ok != Result)
{
return false;
}
}
else
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureIncorrectStructType", "Icorrect struct type in a structure member variable.").ToString();
}
return false;
}
}
else if ((VarType.PinCategory == K2Schema->PC_Exec) || (VarType.PinCategory == K2Schema->PC_Meta) || (VarType.PinCategory == K2Schema->PC_Wildcard))
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureIncorrectTypeCategory", "Icorrect type for a structure member variable.").ToString();
}
return false;
}
return true;
}
bool FStructureEditorUtils::CanHaveAMemberVariableOfType(const UUserDefinedStruct* Struct, const FEdGraphPinType& VarType, FString* OutMsg)
{
const UEdGraphSchema_K2* K2Schema = GetDefault<UEdGraphSchema_K2>();
if ((VarType.PinCategory == K2Schema->PC_Struct) && Struct)
{
if (const UScriptStruct* SubCategoryStruct = Cast<const UScriptStruct>(VarType.PinSubCategoryObject.Get()))
{
const EStructureError Result = IsStructureValid(SubCategoryStruct, Struct, OutMsg);
if (EStructureError::Ok != Result)
{
return false;
}
}
else
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureIncorrectStructType", "Incorrect struct type in a structure member variable.").ToString();
}
return false;
}
}
else if ((VarType.PinCategory == K2Schema->PC_Exec)
|| (VarType.PinCategory == K2Schema->PC_Wildcard)
|| (VarType.PinCategory == K2Schema->PC_MCDelegate)
|| (VarType.PinCategory == K2Schema->PC_Delegate))
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureIncorrectTypeCategory", "Incorrect type for a structure member variable.").ToString();
}
return false;
}
else
{
const auto PinSubCategoryClass = Cast<const UClass>(VarType.PinSubCategoryObject.Get());
if (PinSubCategoryClass && PinSubCategoryClass->IsChildOf(UBlueprint::StaticClass()))
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureUseBlueprintReferences", "Struct cannot use any blueprint references").ToString();
}
return false;
}
}
return true;
}
FStructureEditorUtils::EStructureError FStructureEditorUtils::IsStructureValid(const UScriptStruct* Struct, const UStruct* RecursionParent, FString* OutMsg)
{
check(Struct);
if (Struct == RecursionParent)
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureRecursion", "Recursion: Struct cannot have itself as a member variable. Struct '%s', recursive parent '%s'").ToString(),
*Struct->GetFullName(), *RecursionParent->GetFullName());
}
return EStructureError::Recursion;
}
const UScriptStruct* FallbackStruct = GetFallbackStruct();
if (Struct == FallbackStruct)
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureUnknown", "Struct unknown (deleted?)").ToString();
}
return EStructureError::FallbackStruct;
}
if (Struct->GetStructureSize() <= 0)
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureSizeIsZero", "Struct '%s' is empty").ToString(), *Struct->GetFullName());
}
return EStructureError::EmptyStructure;
}
if (const UUserDefinedStruct* UDStruct = Cast<const UUserDefinedStruct>(Struct))
{
if (UDStruct->Status != EUserDefinedStructureStatus::UDSS_UpToDate)
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureNotCompiled", "Struct '%s' is not compiled").ToString(), *Struct->GetFullName());
}
return EStructureError::NotCompiled;
}
for (const UProperty* P = Struct->PropertyLink; P; P = P->PropertyLinkNext)
{
const UStructProperty* StructProp = Cast<const UStructProperty>(P);
if (NULL == StructProp)
{
if (const UArrayProperty* ArrayProp = Cast<const UArrayProperty>(P))
{
StructProp = Cast<const UStructProperty>(ArrayProp->Inner);
}
}
if (StructProp)
{
if ((NULL == StructProp->Struct) || (FallbackStruct == StructProp->Struct))
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureUnknownProperty", "Struct unknown (deleted?). Parent '%s' Property: '%s'").ToString(),
*Struct->GetFullName(), *StructProp->GetName());
}
return EStructureError::FallbackStruct;
}
FString OutMsgInner;
const EStructureError Result = IsStructureValid(
StructProp->Struct,
RecursionParent ? RecursionParent : Struct,
OutMsg ? &OutMsgInner : NULL);
if (EStructureError::Ok != Result)
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructurePropertyErrorTemplate", "Struct '%s' Property '%s' Error ( %s )").ToString(),
*Struct->GetFullName(), *StructProp->GetName(), *OutMsgInner);
}
return Result;
}
}
}
}
return EStructureError::Ok;
}
FStructureEditorUtils::EStructureError FStructureEditorUtils::IsStructureValid(const UScriptStruct* Struct, const UStruct* RecursionParent, FString* OutMsg)
{
check(Struct);
if (Struct == RecursionParent)
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureRecursion", "Recursion: Struct cannot have itself as a member variable. Struct '%s', recursive parent '%s'").ToString(),
*Struct->GetFullName(), *RecursionParent->GetFullName());
}
return EStructureError::Recursion;
}
const UScriptStruct* FallbackStruct = GetFallbackStruct();
if (Struct == FallbackStruct)
{
if (OutMsg)
{
*OutMsg = LOCTEXT("StructureUnknown", "Struct unknown (deleted?)").ToString();
}
return EStructureError::FallbackStruct;
}
if (const UBlueprintGeneratedStruct* BPGStruct = Cast<const UBlueprintGeneratedStruct>(Struct))
{
static const FName BlueprintTypeName(TEXT("BlueprintType"));
if (!Struct->GetBoolMetaData(BlueprintTypeName))
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureNotBlueprintType", "Struct '%s' is not BlueprintType").ToString(), *Struct->GetFullName());
}
return EStructureError::NotBlueprintType;
}
if (BPGStruct->Status != EBlueprintStructureStatus::BSS_UpToDate)
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureNotCompiled", "Struct '%s' is not compiled").ToString(), *Struct->GetFullName());
}
return EStructureError::NotCompiled;
}
for (const UProperty * P = Struct->PropertyLink; P; P = P->PropertyLinkNext)
{
const UStructProperty* StructProp = Cast<const UStructProperty>(P);
if (NULL == StructProp)
{
if (const UArrayProperty* ArrayProp = Cast<const UArrayProperty>(P))
{
StructProp = Cast<const UStructProperty>(ArrayProp->Inner);
}
}
if (StructProp)
{
if ((NULL == StructProp->Struct) || (FallbackStruct == StructProp->Struct))
{
if (OutMsg)
{
*OutMsg = FString::Printf(*LOCTEXT("StructureUnknownProperty", "Struct unknown (deleted?). Parent '%s' Property: '%s").ToString(),
*Struct->GetFullName(), *StructProp->GetName());
}
return EStructureError::FallbackStruct;
}
const EStructureError Result = IsStructureValid(StructProp->Struct, RecursionParent ? RecursionParent : Struct, OutMsg);
if (EStructureError::Ok != Result)
{
return Result;
}
}
}
}
return EStructureError::Ok;
}
