public int Add(T value)
{
if (this._listStore == null)
{
this._listStore = new SingleItemList <T>();
}
FrugalListStoreState state = this._listStore.Add(value);
if (state != FrugalListStoreState.Success)
{
if (FrugalListStoreState.ThreeItemList != state)
{
if (FrugalListStoreState.SixItemList != state)
{
if (FrugalListStoreState.Array != state)
{
throw new InvalidOperationException(System.Xaml.SR.Get("FrugalList_CannotPromoteBeyondArray"));
}
ArrayItemList <T> list3 = new ArrayItemList <T>(this._listStore.Count + 1);
list3.Promote(this._listStore);
this._listStore = list3;
list3.Add(value);
this._listStore = list3;
}
else
{
SixItemList <T> list2 = new SixItemList <T>();
list2.Promote(this._listStore);
this._listStore = list2;
list2.Add(value);
this._listStore = list2;
}
}
else
{
ThreeItemList <T> list = new ThreeItemList <T>();
list.Promote(this._listStore);
list.Add(value);
this._listStore = list;
}
}
return(this._listStore.Count - 1);
}
public override object Clone()
{
ThreeItemList<T> list = new ThreeItemList<T>();
list.Promote((ThreeItemList<T>) this);
return list;
}