public override RASTElement Next()
{
//Event Triggering
// Prepare event information
RASTVisitorEventArgs args_prev = new RASTVisitorEventArgs();
// Raise the Node Leave event
m_event.OnNodeLeave(m_item, args_prev);
// Raise the Node Leave event
if (m_endOfContext)
{
m_event.OnContextLeave(m_item, args_prev);
m_endOfContext = false;
}
// Increase iterator
PrepareNext();
// Update item
m_item = m_node.GetChild(m_contextIndex, m_elementIndex);
//Event Triggering
if (m_item != null)
{
// Prepare event information
RASTVisitorEventArgs args_next = new RASTVisitorEventArgs();
// Raise OnContextEnter and OnNodeEnter events
m_event.OnNodeEnter(m_item, args_next);
}
return(m_item);
}
public override RASTElement Begin()
{
// Initialize Iterator
PrepareFirst();
// Update item
m_item = m_node.GetChild(m_contextIndex, m_elementIndex);
//Event Triggering
if (m_item != null)
{
// Prepare event information
RASTVisitorEventArgs args = new RASTVisitorEventArgs();
// Raise OnContextEnter and OnNodeEnter events
m_Event.OnContextEnter(m_item, args);
m_Event.OnNodeEnter(m_item, args);
}
return(m_item);
}
public override RASTElement Begin(object param = null)
{
int context = 0;
// Initialize context from method parameter
if (param != null)
{
if (param is int)
{
context = (int)param;
}
else if (param is ContextType)
{
context = m_node.MapContextToIndex((ContextType)param);
}
else
{
Console.WriteLine("WARNING!!! Iterator initialization didn't work as expected");
}
}
// Initialize Iterator
PrepareFirst(context);
// Update item
m_item = m_node.GetChild(m_contextIndex, m_elementIndex);
//Event Triggering
if (m_item != null)
{
// Prepare event information
RASTVisitorEventArgs args = new RASTVisitorEventArgs();
// Raise OnContextEnter and OnNodeEnter events
m_Event.OnContextEnter(m_item, args);
m_Event.OnNodeEnter(m_item, args);
}
return(m_item);
}
public override bool End()
{
if (m_item == null)
{
return(true);
}
//Event Triggering
// Prepare event information
RASTVisitorEventArgs args = new RASTVisitorEventArgs();
// Raise the Node Leave event
m_Event.OnNodeLeave(m_item, args);
// Raise the Node Leave event
if (m_endOfContext)
{
m_Event.OnContextLeave(m_item, args);
m_endOfContext = false;
}
return(false);
}
public virtual void OnContextLeave(RASTElement node, RASTVisitorEventArgs args)
{
m_OnContextLeave?.Invoke(node, args);
}
public virtual void OnNodeEnter(RASTElement node, RASTVisitorEventArgs args)
{
m_OnNodeEnter?.Invoke(node, args);
}
