public bool MoveNext()
{
if (InnerLookup.IsDefaultValue())
{
InnerLookup = CommonImplementation.ToLookupImpl(ref Right, RightKeySelector);
}
continueYielding:
if (!NeedsYield.IsDefaultValue())
{
if (NeedsYield.MoveNext())
{
var rightCur = NeedsYield.Current;
Current = ResultSelector(CurrentKey, rightCur);
return(true);
}
NeedsYield.Dispose();
NeedsYield = default(GroupingEnumerator <TRightItem>);
}
while (Left.MoveNext())
{
var cur = Left.Current;
var curKey = LeftKeySelector(cur);
if (curKey == null)
{
continue;
}
CurrentKey = cur;
NeedsYield = InnerLookup[curKey].GetEnumerator();
goto continueYielding;
}
return(false);
}
public void Dispose()
{
Inner.Dispose();
}