private static Dictionary <AssetViewModel, List <ItemToReload> > PrepareAssemblyReloading(SessionViewModel session, UnloadingVisitor visitor, IUndoRedoService actionService)
{
var assetItemsToReload = new Dictionary <AssetViewModel, List <ItemToReload> >();
// Serialize old objects from unloaded assemblies to Yaml streams
foreach (var asset in session.LocalPackages.SelectMany(x => x.Assets))
{
// Asset has no quantum graph (eg. text asset), let's skip it
if (asset.PropertyGraph == null)
{
continue;
}
// Generate missing ids for safetly
AssetCollectionItemIdHelper.GenerateMissingItemIds(asset.Asset);
// Serialize objects with types to unload to Yaml
// Objects that were already IUnloadable will also be included
var rootNode = session.AssetNodeContainer.GetNode(asset.Asset);
var itemsToReload = visitor.Run(asset.PropertyGraph);
if (itemsToReload.Count > 0)
{
// We apply changes in opposite visit order so that indices remains valid when we remove objects while iterating
for (int index = itemsToReload.Count - 1; index >= 0; index--)
{
var itemToReload = itemsToReload[index];
// Transform path to Quantum
itemToReload.GraphPath = GraphNodePath.From(rootNode, itemToReload.Path, out itemToReload.GraphPathIndex);
// Remove (collections) or replace nodes with null (members) so that we can unload assemblies
ClearNode(actionService, asset, itemToReload);
}
// Add to list of items to reload for PostAssemblyReloading
assetItemsToReload.Add(asset, new List <ItemToReload>(itemsToReload));
}
}
return(assetItemsToReload);
}
protected override bool ProcessObject(object obj, Type expectedType)
{
// TODO: More advanced checks if IUnloadable is supposed to be a type from the unloaded assembly (this would avoid processing unecessary IUnloadable)
if (obj != null && (UnloadedAssemblies.Contains(obj.GetType().Assembly) || obj is IUnloadable))
{
NodeIndex index;
var settings = new SerializerContextSettings(Log);
var path = GraphNodePath.From(propertyGraph.RootNode, CurrentPath, out index);
var overrides = AssetPropertyGraph.GenerateOverridesForSerialization(path.GetNode());
overrides = RemoveFirstIndexInYamlPath(overrides, index);
if (overrides != null)
{
settings.Properties.Add(AssetObjectSerializerBackend.OverrideDictionaryKey, overrides);
}
var objectReferences = propertyGraph.GenerateObjectReferencesForSerialization(path.GetNode());
objectReferences = RemoveFirstIndexInYamlPath(objectReferences, index);
if (objectReferences != null)
{
settings.Properties.Add(AssetObjectSerializerBackend.ObjectReferencesKey, objectReferences);
}
var parsingEvents = new List <ParsingEvent>();
AssetYamlSerializer.Default.Serialize(new ParsingEventListEmitter(parsingEvents), obj, expectedType, settings);
// Buid parent path
var parentPath = CurrentPath.Clone();
parentPath.Pop();
ItemsToReload.Add(new ItemToReload(parentPath, CurrentPath.Clone(), parsingEvents, expectedType));
// Don't recurse inside
return(true);
}
return(false);
}