// Remove null children of current node, and return true => current node is null
public static bool RemoveNullChildren(this ElementNode node)
{
if (node == null)
{
return(true);
}
var children = node.Children().Cast <ElementNode>().ToList();
foreach (var child in children)
{
// Remove child if it is null => return true
if (RemoveNullChildren(child))
{
node.Remove(child);
}
}
bool currentNodeIsEmpty = !node.Children().Any() && node.Value == null;
bool currentNodeIsFhirResource = node.IsFhirResource();
if (currentNodeIsEmpty && !currentNodeIsFhirResource)
{
return(true);
}
else
{
return(false);
}
}
public override bool Visit(ElementNode node)
{
if (node.IsFhirResource())
{
ProcessResult result = ProcessResourceNode(node);
_contextStack.Push(new Tuple <ElementNode, ProcessResult>(node, result));
}
return(true);
}
public override void EndVisit(ElementNode node)
{
if (node.IsFhirResource())
{
Tuple <ElementNode, ProcessResult> context = _contextStack.Pop();
ProcessResult result = context.Item2;
if (context.Item1 != node)
{
// Should never throw exception here. In case any bug happen, we can get clear message for this exception.
throw new ConstraintException("Internal error: access wrong context.");
}
if (_contextStack.Count() > 0)
{
_contextStack.Peek().Item2.Update(result);
}
if (AddSecurityTag && !node.IsContainedNode())
{
node.AddSecurityTag(result);
}
}
}
