bool IEnumerator.MoveNext()
{
try
{
switch (_state)
{
case 0:
_state = OurListEnumeratorState.FurtherEnumerationIsNotPossible;
_enumerator = Parent._list.GetEnumerator();
_state = OurListEnumeratorState.ParentEnumeratorCreated;
break;
case OurListEnumeratorState.AwaitingNextMove:
_state = OurListEnumeratorState.ParentEnumeratorCreated;
break;
default:
return(false);
}
if (_enumerator.MoveNext())
{
_current = _enumerator.Current;
_state = OurListEnumeratorState.AwaitingNextMove;
return(true);
}
Dispose();
_enumerator = null;
return(false);
}
finally
{
Dispose();
}
}
bool IEnumerator.MoveNext()
{
// ISSUE: fault handler
try
{
switch (_state)
{
case OurListEnumeratorState.EnumeratorCreated:
_state = OurListEnumeratorState.FurtherEnumerationIsNotPossible;
_enumerator = _list.GetEnumerator();
_state = OurListEnumeratorState.ParentEnumeratorCreated;
break;
case OurListEnumeratorState.AwaitingNextMove:
_state = OurListEnumeratorState.ParentEnumeratorCreated;
break;
default:
return(false);
}
if (_enumerator.MoveNext())
{
_current = _getValue(_enumerator.Current);
_state = OurListEnumeratorState.AwaitingNextMove;
return(true);
}
Dispose();
_enumerator = (IEnumerator <TElement>)null;
return(false);
}
finally
{
Dispose();
}
}
public IEnumerator <TResult> GetEnumerator()
{
SelectEnumerable <TElement, TResult> enumerator;
if (_state == OurListEnumeratorState.EnumeratorNotCreated && _initialThreadId == Environment.CurrentManagedThreadId)
{
_state = OurListEnumeratorState.EnumeratorCreated;
enumerator = this;
}
else
{
enumerator = new SelectEnumerable <TElement, TResult>(OurListEnumeratorState.EnumeratorCreated);
}
enumerator._list = List;
enumerator._getValue = GeValue;
return(enumerator);
}
public void Dispose()
{
_state = OurListEnumeratorState.FurtherEnumerationIsNotPossible;
_enumerator?.Dispose();
}
public OurEnumerator(OurListEnumeratorState state)
{
_state = state;
}
public SelectEnumerable(OurListEnumeratorState initState)
{
_state = initState;
_initialThreadId = Environment.CurrentManagedThreadId;
}
