protected override void OnSet(object key, object oldValue, object newValue)
{
if (oldValue == null && !NameIndexList.Contains(key))
{
OnInsert(key, newValue);
}
}
protected override void OnInsert(object key, object value)
{
//
// NOTE: OnInsert leads one to believe that keys are ordered in the
// base dictionary in that they can be inserted somewhere in the
// middle. However, the base implementation only calls OnInsert
// during the Add operation, so we known it is safe here to simply
// add the new key at the end of the name list.
//
NameIndexList.Add(key);
}
protected override void OnSet(object key, object oldValue, object newValue)
{
//
// NOTE: OnSet is called when the base dictionary is modified via
// the indexer. We need to trap this and detect when a new key is
// being added via the indexer. If the old value is null for the
// key, then there is a big chance it is a new key. But just to be
// sure, we also check out key index if it does not already exist.
// Finally, we just delegate to OnInsert. In effect, we're
// converting OnSet to OnInsert where needed. Ideally, the base
// implementation would have done this for.
//
if (oldValue == null && !NameIndexList.Contains(key))
{
OnInsert(key, newValue);
}
}
protected override void OnClear()
{
NameIndexList.Clear();
}
protected override void OnRemove(object key, object value)
{
NameIndexList.Remove(key);
}
protected override void OnInsert(object key, object value)
{
NameIndexList.Add(key);
}
public virtual new JsonMemberEnumerator GetEnumerator()
{
return(new JsonMemberEnumerator(this, NameIndexList.GetEnumerator()));
}
