private void UpdateItem(ObjectOrValueNode node, MetadataInfo info)
{
var newInstance = info.GetValue(node.Instance);
if (newInstance == null)
{
node.Metadata[info] = null;
}
else
{
var newItem = RegisterItem(newInstance, node);
node.Metadata[info] = newItem;
}
}
public void NoteMetadataRequirement(MetadataInfo info)
{
MetadataRequirements.Add(info);
}
private void ApplyMetadataRequirement(MetadataInfo info)
{
HashSet<MetadataInfo> members;
if (!_typeMetadataRequirements.TryGetValue(info.Type, out members))
{
members = new HashSet<MetadataInfo>();
_typeMetadataRequirements[info.Type] = members;
}
if (!members.Contains(info))
{
members.Add(info);
// while we are here, update any existing instances with this property
foreach (
var i in
_items.Values.OfType<ObjectOrValueNode>().Where(
x =>
!x.Metadata.ContainsKey(info) && info.Type.IsAssignableFrom(x.Instance.GetType())).ToList())
UpdateItem(i, info);
}
}
