C++ TMap::Remove方法代码示例

void FSlateRHIResourceManager::CreateTextures( const TArray< const FSlateBrush* >& Resources )
{
	DECLARE_SCOPE_CYCLE_COUNTER(TEXT("Loading Slate Textures"), STAT_Slate, STATGROUP_LoadTime);

	TMap<FName,FNewTextureInfo> TextureInfoMap;

	const uint32 Stride = GPixelFormats[PF_R8G8B8A8].BlockBytes;
	for( int32 ResourceIndex = 0; ResourceIndex < Resources.Num(); ++ResourceIndex )
	{
		const FSlateBrush& Brush = *Resources[ResourceIndex];
		const FName TextureName = Brush.GetResourceName();
		if( TextureName != NAME_None && !Brush.HasUObject() && !Brush.IsDynamicallyLoaded() && !ResourceMap.Contains(TextureName) )
		{
			// Find the texture or add it if it doesnt exist (only load the texture once)
			FNewTextureInfo& Info = TextureInfoMap.FindOrAdd( TextureName );
	
			Info.bSrgb = (Brush.ImageType != ESlateBrushImageType::Linear);

			// Only atlas the texture if none of the brushes that use it tile it and the image is srgb
		
			Info.bShouldAtlas &= ( Brush.Tiling == ESlateBrushTileType::NoTile && Info.bSrgb && AtlasSize > 0 );

			// Texture has been loaded if the texture data is valid
			if( !Info.TextureData.IsValid() )
			{
				uint32 Width = 0;
				uint32 Height = 0;
				TArray<uint8> RawData;
				bool bSucceeded = LoadTexture( Brush, Width, Height, RawData );

				Info.TextureData = MakeShareable( new FSlateTextureData( Width, Height, Stride, RawData ) );

				const bool bTooLargeForAtlas = (Width >= 256 || Height >= 256 || Width >= AtlasSize || Height >= AtlasSize );

				Info.bShouldAtlas &= !bTooLargeForAtlas;

				if( !bSucceeded || !ensureMsgf( Info.TextureData->GetRawBytes().Num() > 0, TEXT("Slate resource: (%s) contains no data"), *TextureName.ToString() ) )
				{
					TextureInfoMap.Remove( TextureName );
				}
			}
		}
	}

	// Sort textures by size.  The largest textures are atlased first which creates a more compact atlas
	TextureInfoMap.ValueSort( FCompareFNewTextureInfoByTextureSize() );

	for( TMap<FName,FNewTextureInfo>::TConstIterator It(TextureInfoMap); It; ++It )
	{
		const FNewTextureInfo& Info = It.Value();
		FName TextureName = It.Key();
		FString NameStr = TextureName.ToString();

		checkSlow( TextureName != NAME_None );

		FSlateShaderResourceProxy* NewTexture = GenerateTextureResource( Info );

		ResourceMap.Add( TextureName, NewTexture );
	}
}

	void Unbind(UJavascriptDelegate* DelegateObject)
	{
		static FName NAME_Fire("Fire");

		if (WeakObject.IsValid())
		{
			if (auto p = Cast<UMulticastDelegateProperty>(Property))
			{
				FScriptDelegate Delegate;
				Delegate.BindUFunction(DelegateObject, NAME_Fire);

				auto Target = p->GetPropertyValuePtr_InContainer(WeakObject.Get());
				Target->Remove(Delegate);
			}
			else if (auto p = Cast<UDelegateProperty>(Property))
			{
				auto Target = p->GetPropertyValuePtr_InContainer(WeakObject.Get());
				Target->Clear();
			}
		}

		DelegateObject->JavascriptDelegate = nullptr;
		DelegateObject->RemoveFromRoot();
		DelegateObjects.Remove(DelegateObject);

		if (!bAbandoned)
		{
			functions.Remove(DelegateObject->UniqueId);
		}
	}

bool FChunkManifestGenerator::LoadAssetRegistry(const FString& SandboxPath, const TSet<FName>* PackagesToKeep)
{
	UE_LOG(LogChunkManifestGenerator, Display, TEXT("Loading asset registry."));

	// Load generated registry for each platform
	check(Platforms.Num() == 1);

	for (auto Platform : Platforms)
	{
		/*FString PlatformSandboxPath = SandboxPath.Replace(TEXT("[Platform]"), *Platform->PlatformName());
		FArchive* AssetRegistryReader = IFileManager::Get().CreateFileReader(*PlatformSandboxPath);*/

		FString PlatformSandboxPath = SandboxPath.Replace(TEXT("[Platform]"), *Platform->PlatformName());
		FArrayReader FileContents;
		if (FFileHelper::LoadFileToArray(FileContents, *PlatformSandboxPath) == false)
		{
			continue;
		}
		FArchive* AssetRegistryReader = &FileContents;

		TMap<FName, FAssetData*> SavedAssetRegistryData;
		TArray<FDependsNode*> DependencyData;
		if (AssetRegistryReader)
		{
			AssetRegistry.LoadRegistryData(*AssetRegistryReader, SavedAssetRegistryData, DependencyData);
		}
		for (auto& LoadedAssetData : AssetRegistryData)
		{
			if (PackagesToKeep &&
				PackagesToKeep->Contains(LoadedAssetData.PackageName) == false)
			{
				continue;
			}

			FAssetData* FoundAssetData = SavedAssetRegistryData.FindRef(LoadedAssetData.ObjectPath);
			if ( FoundAssetData )
			{
				LoadedAssetData.ChunkIDs.Append(FoundAssetData->ChunkIDs);
				
				SavedAssetRegistryData.Remove(LoadedAssetData.ObjectPath);
				delete FoundAssetData;
			}
		}

		for (const auto& SavedAsset : SavedAssetRegistryData)
		{
			if (PackagesToKeep && PackagesToKeep->Contains(SavedAsset.Value->PackageName))
			{ 
				AssetRegistryData.Add(*SavedAsset.Value);
			}
			
			delete SavedAsset.Value;
		}
		SavedAssetRegistryData.Empty();
	}
	return true;
}

	virtual void DisassociateSuppress(FLogCategoryBase* Destination)
	{
		FName* Name = Associations.Find(Destination);
		if (Name)
		{
			verify(ReverseAssociations.Remove(*Name, Destination)==1);
			verify(Associations.Remove(Destination) == 1);
		}
	}

void FSlateD3DTextureManager::CreateTextures( const TArray< const FSlateBrush* >& Resources )
{
	TMap<FName,FNewTextureInfo> TextureInfoMap;
	
	for( int32 ResourceIndex = 0; ResourceIndex < Resources.Num(); ++ResourceIndex )
	{
		const FSlateBrush& Brush = *Resources[ResourceIndex];
		const FName TextureName = Brush.GetResourceName();

		if( TextureName != NAME_None && !ResourceMap.Contains(TextureName) )
		{
			// Find the texture or add it if it doesn't exist (only load the texture once)
			FNewTextureInfo& Info = TextureInfoMap.FindOrAdd( TextureName );

			Info.bSrgb = (Brush.ImageType != ESlateBrushImageType::Linear);

			// Only atlas the texture if none of the brushes that use it tile it
			Info.bShouldAtlas &= (Brush.Tiling == ESlateBrushTileType::NoTile && Info.bSrgb );


			if( !Info.TextureData.IsValid())
			{
				uint32 Width = 0;
				uint32 Height = 0;
				TArray<uint8> RawData;
				bool bSucceeded = LoadTexture( Brush, Width, Height, RawData );

				const uint32 Stride = 4; // RGBA

				Info.TextureData = MakeShareable( new FSlateTextureData( Width, Height, Stride, RawData ) );

				const bool bTooLargeForAtlas = (Width >= 256 || Height >= 256);

				Info.bShouldAtlas &= !bTooLargeForAtlas;

				if( !bSucceeded )
				{
					TextureInfoMap.Remove( TextureName );
				}
			}
		}
	}

	TextureInfoMap.ValueSort( FCompareFNewTextureInfoByTextureSize() );

	for( TMap<FName,FNewTextureInfo>::TConstIterator It(TextureInfoMap); It; ++It )
	{
		const FNewTextureInfo& Info = It.Value();
		FName TextureName = It.Key();
		FString NameStr = TextureName.ToString();

		FSlateShaderResourceProxy* NewTexture = GenerateTextureResource( Info );

		ResourceMap.Add( TextureName, NewTexture );
	}
}

void FGAGameEffectContainer::RemoveEffect(FGAGameEffectHandle& HandleIn)
{
	EGAEffectAggregation aggregatiopn = HandleIn.GetEffectRef().GameEffect->EffectAggregation;
	UObject* Instigator = HandleIn.GetContextRef().Instigator.Get();
	TSharedPtr<FGAGameEffect> effect = ActiveEffects.FindAndRemoveChecked(HandleIn);

	if (effect.IsValid())
	{
		switch (aggregatiopn)
		{
			case EGAEffectAggregation::AggregateByInstigator:
			{
				TMap<FGAGameEffectHandle, TSharedPtr<FGAGameEffect>>* effects = InstigatorEffects.Find(Instigator);
				TMap<FName, TSet<FGAGameEffectHandle>>* EffectByClass = InstigatorEffectHandles.Find(Instigator);
				if (EffectByClass)
				{
					//Probabaly need another path for removing just single effect from stack.
					EffectByClass->Remove(HandleIn.GetEffectSpec()->GetFName());
				}
				if (effects)
				{
					effects->FindAndRemoveChecked(HandleIn);
					if (effects->Num() == 0)
					{
						InstigatorEffects.Remove(Instigator);
					}
				}
				break;
			}
			case EGAEffectAggregation::AggregateByTarget:
			{
				//TargetEffects.FindAndRemoveChecked(HandleIn);
				TSet<FGAGameEffectHandle>* Handles = TargetEffectByType.Find(HandleIn.GetEffectSpec()->GetFName());
				//check aggregation type to know which effect to remove exactly ?
				TargetEffectByType.Remove(HandleIn.GetEffectSpec()->GetFName());
				break;
			}
		}
		for (FGAGameEffectModifier& Modifier : effect->GameEffect->Modifiers)
		{
			if (Modifier.Attribute.IsValid())
			{
				FGAAttributeBase* Attribute = OwningComp->GetAttribute(Modifier.Attribute);
				if (Attribute)
				{
					Attribute->RemoveBonus(HandleIn);
				}
			}
		}
		UE_LOG(GameAttributesEffects, Log, TEXT("FGAGameEffectContainer:: Removing Effect"))
			effect.Reset();
	}
}

void FGameplayDebugger::WorldDestroyed(UWorld* InWorld)
{
#if !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
	bool bIsServer = InWorld && InWorld->GetNetMode() < ENetMode::NM_Client; // (Only work on  server)
	if (!bIsServer)
	{
		return;
	}

	// remove global replicator from level
	AllReplicatorsPerWorlds.Remove(InWorld);
#endif //!(UE_BUILD_SHIPPING || UE_BUILD_TEST)
}

void UActorComponent::PostEditUndo()
{
	// Objects marked pending kill don't call PostEditChange() from UObject::PostEditUndo(),
	// so they can leave an EditReregisterContexts entry around if they are deleted by an undo action.
	if( IsPendingKill() )
	{
		// The reregister context won't bother attaching components that are 'pending kill'. 
		FComponentReregisterContext* ReregisterContext = EditReregisterContexts.FindRef(this);
		if(ReregisterContext)
		{
			delete ReregisterContext;
			EditReregisterContexts.Remove(this);
		}
	}
	else
	{
		Owner = GetTypedOuter<AActor>();
		bCanUseCachedOwner = true;

		// Let the component be properly registered, after it was restored.
		if (Owner)
		{
			Owner->AddOwnedComponent(this);
		}

		TArray<UObject*> Children;
		GetObjectsWithOuter(this, Children);

		for (UObject* Child : Children)
		{
			if (UActorComponent* ChildComponent = Cast<UActorComponent>(Child))
			{
				if (ChildComponent->Owner)
				{
					ChildComponent->Owner->RemoveOwnedComponent(ChildComponent);
				}
				ChildComponent->Owner = Owner;
				if (Owner)
				{
					Owner->AddOwnedComponent(ChildComponent);
				}
			}
		}

		if (GetWorld())
		{
			GetWorld()->UpdateActorComponentEndOfFrameUpdateState(this);
		}
	}
	Super::PostEditUndo();
}

void FGAGameEffectContainer::RemoveEffect(FGAGameEffectHandle& HandleIn)
{
	EGAEffectAggregation aggregatiopn = HandleIn.GetEffectRef().GameEffect->EffectAggregation;
	UObject* Instigator = HandleIn.GetContextRef().Instigator.Get();
	TSharedPtr<FGAGameEffect> effect = ActiveEffects.FindAndRemoveChecked(HandleIn);

	if (effect.IsValid())
	{
		switch (aggregatiopn)
		{
		case EGAEffectAggregation::AggregateByInstigator:
		{
			TMap<FGAGameEffectHandle, TSharedPtr<FGAGameEffect>>* effects = InstigatorEffects.Find(Instigator);
			TMap<UClass*, FGAGameEffectHandle>* EffectByClass = InstigatorEffectHandles.Find(Instigator);
			if (EffectByClass)
			{
				EffectByClass->Remove(HandleIn.GetEffectSpec()->StaticClass());
			}
			if (effects)
			{
				effects->FindAndRemoveChecked(HandleIn);
				if (effects->Num() == 0)
				{
					InstigatorEffects.Remove(Instigator);
				}
			}
			break;
		}
		case EGAEffectAggregation::AggregateByTarget:
		{
			TargetEffects.FindAndRemoveChecked(HandleIn);
			break;
		}
		}
		for (FGAGameEffectModifier& Modifier : effect->GameEffect->Modifiers)
		{
			if (Modifier.Attribute.IsValid())
			{
				FGAAttributeBase* Attribute = OwningComp->GetAttribute(Modifier.Attribute);
				if (Attribute)
				{
					Attribute->RemoveBonus(HandleIn);
				}
			}
		}
		UE_LOG(GameAttributesEffects, Log, TEXT("FGAGameEffectContainer:: Removing Effect"))
			effect.Reset();
	}
}

void WriteMergeObjects( TFile *target ) {
  cout << "Writing the merged data." << endl;

  TIterator *nextobj = MergeObjects.MakeIterator();
  TObjString *pathname_obj;
  while( (pathname_obj = (TObjString *)nextobj->Next()) ) {
    TString path,name;
    SplitPathName(pathname_obj->String(),&path,&name);

    TObject *obj = MergeObjects.GetValue(pathname_obj);
    target->cd(path);

    obj->Write( name );

    delete obj;
  }
  MergeObjects.Clear();

  target->Write();

  // Temporarily let multiple root files remain if > 2GB
  // Prevent Target_1.root Target_2.root, ... from happening.
  //  long long max_tree_size = 200000000000LL; // 200 GB
  //  if(TTree::GetMaxTreeSize() < max_tree_size ) {
  //    TTree::SetMaxTreeSize(max_tree_size);
  //  }

  nextobj = MergeChains.MakeIterator();
  TObjString *pathname_obj;
  while( (pathname_obj = (TObjString *)nextobj->Next()) ) {
    TString path,name;
    SplitPathName(pathname_obj->String(),&path,&name);

    TChain *ch = (TChain *)MergeChains.GetValue(pathname_obj);
    target->cd(path);
    ch->Merge(target,0,"KEEP");

    delete ch;

	// in case of multiple objects with same pathname, must remove
	// this one from the list so we don't get the same (deleted)
	// one next time we look up the same name
	MergeChains.Remove(pathname_obj);
  }
  MergeChains.Clear();

  InitializedMergeObjects = false;
}

void UActorComponent::PostEditUndo()
{
	// Objects marked pending kill don't call PostEditChange() from UObject::PostEditUndo(),
	// so they can leave an EditReregisterContexts entry around if they are deleted by an undo action.
	if( IsPendingKill() )
	{
		// The reregister context won't bother attaching components that are 'pending kill'. 
		FComponentReregisterContext* ReregisterContext = EditReregisterContexts.FindRef(this);
		if(ReregisterContext)
		{
			delete ReregisterContext;
			EditReregisterContexts.Remove(this);
		}
	}
	Super::PostEditUndo();
}

static void DeleteFromEnumerateUserFilesComplete(bool bWasSuccessful, const FUniqueNetId& UserId)
{
	IOnlineSubsystem* OnlineSub = IOnlineSubsystem::Get();
	check(OnlineSub); 

	IOnlineUserCloudPtr UserCloud = OnlineSub->GetUserCloudInterface();

	UserCloud->ClearOnEnumerateUserFilesCompleteDelegate_Handle(GOnEnumerateUserFilesCompleteDelegateHandle);
	GPerCloudDeleteFromEnumerateUserFilesCompleteDelegateHandles.Remove(UserCloud.Get());
	if (bWasSuccessful)
	{
		TArray<FCloudFileHeader> UserFiles;
		UserCloud->GetUserFileList(UserId, UserFiles);

		for (int32 Idx=0; Idx < UserFiles.Num(); Idx++)
		{
			UserCloud->DeleteUserFile(UserId, UserFiles[Idx].FileName, true, true);
		}
	}
}

void UActorComponent::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
{
	FComponentReregisterContext* ReregisterContext = EditReregisterContexts.FindRef(this);
	if(ReregisterContext)
	{
		delete ReregisterContext;
		EditReregisterContexts.Remove(this);
	}

	// The component or its outer could be pending kill when calling PostEditChange when applying a transaction.
	// Don't do do a full recreate in this situation, and instead simply detach.
	if( IsPendingKill() )
	{
		// @todo UE4 james should this call UnregsiterComponent instead to remove itself from the RegisteteredComponents array on the owner?
		ExecuteUnregisterEvents();
		World = NULL;
	}

	Super::PostEditChangeProperty(PropertyChangedEvent);
}

/**
 * Virtual destructor, free'ing allocated memory.
 */
FUntypedBulkData::~FUntypedBulkData()
{
	check( LockStatus == LOCKSTATUS_Unlocked );
	// Free memory.
	if( bShouldFreeOnEmpty )
	{
		FMemory::Free( BulkData );
	}
	BulkData = NULL;
	
#if WITH_EDITOR
	// Detach from archive.
	if( AttachedAr )
	{
		AttachedAr->DetachBulkData( this, false );
		check( AttachedAr == NULL );
	}
#endif // WITH_EDITOR

#if TRACK_BULKDATA_USE
	BulkDataToObjectMap.Remove( this );
#endif
}

void UActorComponent::ConsolidatedPostEditChange(const FPropertyChangedEvent& PropertyChangedEvent)
{
	FComponentReregisterContext* ReregisterContext = EditReregisterContexts.FindRef(this);
	if(ReregisterContext)
	{
		delete ReregisterContext;
		EditReregisterContexts.Remove(this);

		AActor* MyOwner = GetOwner();
		if ( MyOwner && !MyOwner->IsTemplate() && PropertyChangedEvent.ChangeType != EPropertyChangeType::Interactive )
		{
			MyOwner->RerunConstructionScripts();
		}
	}

	// The component or its outer could be pending kill when calling PostEditChange when applying a transaction.
	// Don't do do a full recreate in this situation, and instead simply detach.
	if( IsPendingKill() )
	{
		// @todo UE4 james should this call UnregisterComponent instead to remove itself from the RegisteredComponents array on the owner?
		ExecuteUnregisterEvents();
		World = NULL;
	}
}