void UEditableGameplayTagQueryExpression::EmitTagTokens(FGameplayTagContainer const& TagsToEmit, TArray<uint8>& TokenStream, TArray<FGameplayTag>& TagDictionary, FString* DebugString) const
{
	uint8 const NumTags = (uint8)TagsToEmit.Num();
	TokenStream.Add(NumTags);

	bool bFirstTag = true;

	for (auto T : TagsToEmit)
	{
		int32 TagIdx = TagDictionary.AddUnique(T);
		check(TagIdx <= 255);
		TokenStream.Add((uint8)TagIdx);

		if (DebugString)
		{
			if (bFirstTag == false)
			{
				DebugString->Append(TEXT(","));
			}

			DebugString->Append(TEXT(" "));
			DebugString->Append(T.ToString());
		}

		bFirstTag = false;
	}
}
void SGameplayTagWidget::VerifyAssetTagValidity()
{
	FGameplayTagContainer LibraryTags;

	// Create a set that is the library of all valid tags
	TArray< TSharedPtr<FGameplayTagNode> > NodeStack;

	UGameplayTagsManager& TagsManager = IGameplayTagsModule::Get().GetGameplayTagsManager();
	
	TagsManager.GetFilteredGameplayRootTags(TEXT(""), NodeStack);

	while (NodeStack.Num() > 0)
	{
		TSharedPtr<FGameplayTagNode> CurNode = NodeStack.Pop();
		if (CurNode.IsValid())
		{
			LibraryTags.AddTag(TagsManager.RequestGameplayTag(CurNode->GetCompleteTag()));
			NodeStack.Append(CurNode->GetChildTagNodes());
		}
	}

	// Find and remove any tags on the asset that are no longer in the library
	for (int32 ContainerIdx = 0; ContainerIdx < TagContainers.Num(); ++ContainerIdx)
	{
		UObject* OwnerObj = TagContainers[ContainerIdx].TagContainerOwner.Get();
		FGameplayTagContainer* Container = TagContainers[ContainerIdx].TagContainer;

		if (Container)
		{
			FGameplayTagContainer EditableContainer = *Container;
			FGameplayTagContainer InvalidTags;
			for (auto It = Container->CreateConstIterator(); It; ++It)
			{
				if (!LibraryTags.HasTag(*It, EGameplayTagMatchType::Explicit, EGameplayTagMatchType::Explicit))
				{
					InvalidTags.AddTag(*It);
				}
			}
			if (InvalidTags.Num() > 0)
			{
				FString InvalidTagNames;

				for (auto InvalidIter = InvalidTags.CreateConstIterator(); InvalidIter; ++InvalidIter)
				{
					EditableContainer.RemoveTag(*InvalidIter);
					InvalidTagNames += InvalidIter->ToString() + TEXT("\n");
				}
				SetContainer(Container, &EditableContainer, OwnerObj);

				FFormatNamedArguments Arguments;
				Arguments.Add(TEXT("Objects"), FText::FromString( InvalidTagNames ));
				FText DialogText = FText::Format( LOCTEXT("GameplayTagWidget_InvalidTags", "Invalid Tags that have been removed: \n\n{Objects}"), Arguments );
				OpenMsgDlgInt( EAppMsgType::Ok, DialogText, LOCTEXT("GameplayTagWidget_Warning", "Warning") );
			}
		}
	}
}
void FGameplayTagContainer::AppendTags(FGameplayTagContainer const& Other)
{
	SCOPE_CYCLE_COUNTER(STAT_FGameplayTagContainer_AppendTags);

	GameplayTags.Reserve(Other.Num());

	//add all the tags
	for(TArray<FGameplayTag>::TConstIterator It(Other.GameplayTags); It; ++It)
	{
		AddTag(*It);
	}
}