void RemoveNode(IMetadataObject left, IList<MetadataTreeEntryChanges> changed, Stack<string> stack)
{
var path = stack.ToDataPath();
changed.Add(new MetadataTreeEntryChanges(path, ChangeKind.Deleted, old: left));
var dataAccessor = _modelDataProvider.Get(left.GetType());
foreach (var childProperty in dataAccessor.ChildProperties)
{
stack.Push(childProperty.Name);
foreach (var child in left.Children)
{
stack.Push(child.Id.ToString());
RemoveNode(child, changed, stack);
stack.Pop();
}
stack.Pop();
}
}
void CompareNode(IMetadataObject original, IMetadataObject @new, IList<MetadataTreeEntryChanges> changes, Stack<string> stack)
{
var accessor = _modelDataProvider.Get(original.GetType());
UpdateNodeIfNeeded(original, @new, stack, accessor, changes);
foreach (var childProperty in accessor.ChildProperties)
{
if (!childProperty.ShouldVisitChildren(original) && !childProperty.ShouldVisitChildren(@new))
{
// Do not visit children if they were not generated.
// This means that they were not modified!
continue;
}
stack.Push(childProperty.FolderName);
CompareNodeChildren(original, @new, changes, stack, childProperty);
stack.Pop();
}
}