public void AddSequence(Member mem, TypeNode type) {
ContentNode n = (ContentNode)stack.Pop();
InternalNode inNode = new SequenceNode(mem, type);
inNode.LeftChild = n;
n.Parent = inNode;
stack.Push(inNode);
}
public bool CloseGroup() {
ContentNode node = (ContentNode)stack.Pop();
if (node == null) {
return false;
}
if (stack.Count == 0) {
contentNode = node;
isPartial = false;
}
else {
if (stack.Peek() == null) {
stack.Pop();
contentNode = node;
isPartial = false;
} else {
isPartial = true;
// we are extending an existing content model (probably via subclassing,
// so we simply add the node to the existing model as a new child particle).
ContentNode parentModel = (ContentNode)stack.Pop();
if (parentModel is InternalNode) {
InternalNode pc = (InternalNode)parentModel;
if (pc.RightChild == null) {
pc.RightChild = node;
node.Parent = pc;
} else {
InternalNode nc = pc.Clone();
nc.LeftChild = pc;
nc.RightChild = node;
node.Parent = pc.Parent = nc;
pc = nc;
}
node = pc;
} else {
SequenceNode nc = new SequenceNode(null, null);
nc.LeftChild = parentModel;
nc.RightChild = node;
parentModel.Parent = node.Parent = nc;
node = nc;
}
}
stack.Push(node);
}
return true;
}