public override bool IncrementToken()
{
if (input.IncrementToken())
{
// capture state lazily - maybe no SinkFilter accepts this state
AttributeSource.State state = null;
for (System.Collections.IEnumerator it = sinks.GetEnumerator(); it.MoveNext();)
{
SinkTokenStream sink = (SinkTokenStream)((System.WeakReference)it.Current).Target;
if (sink != null)
{
if (sink.Accept(this))
{
if (state == null)
{
state = this.CaptureState();
}
sink.AddState(state);
}
}
}
return(true);
}
return(false);
}
internal /*private*/ void AddState(AttributeSource.State state)
{
if (it != null)
{
throw new System.SystemException("The tee must be consumed before sinks are consumed.");
}
cachedStates.Add(state);
}
private void FillCache()
{
while (input.IncrementToken())
{
cache.Add(CaptureState());
}
// capture final state
input.End();
finalState = CaptureState();
}
public override void End()
{
base.End();
AttributeSource.State finalState = CaptureState();
for (System.Collections.IEnumerator it = sinks.GetEnumerator(); it.MoveNext();)
{
SinkTokenStream sink = (SinkTokenStream)((System.WeakReference)it.Current).Target;
if (sink != null)
{
sink.SetFinalState(finalState);
}
}
}
public override bool IncrementToken()
{
// lazy init the iterator
if (it == null)
{
it = cachedStates.GetEnumerator();
}
if (!it.MoveNext())
{
return(false);
}
AttributeSource.State state = (State)it.Current;
RestoreState(state);
return(true);
}
private void FillCache()
{
while (input.IncrementToken())
{
cache.Add(CaptureState());
}
// capture final state
input.End();
finalState = CaptureState();
}
internal /*private*/ void SetFinalState(AttributeSource.State finalState)
{
this.finalState = finalState;
}
internal /*private*/ void SetFinalState(AttributeSource.State finalState)
{
this.finalState = finalState;
}