private IList GetProjectItems()

in ArchivedSamples/Source_Control_Provider_Status_Bar_Integration/C#/SccProvider.cs [1206:1267]
50 lines of code
14 McCabe index (conditional complexity)

        private IList<uint> GetProjectItems(IVsHierarchy pHier, uint startItemid)
        {
            List<uint> projectNodes = new List<uint>();

            // The method does a breadth-first traversal of the project's hierarchy tree
            Queue<uint> nodesToWalk = new Queue<uint>();
            nodesToWalk.Enqueue(startItemid);

            while (nodesToWalk.Count > 0)
            {
                uint node = nodesToWalk.Dequeue();
                projectNodes.Add(node);

                DebugWalkingNode(pHier, node);

                object property = null;
                if (pHier.GetProperty(node, (int)__VSHPROPID.VSHPROPID_FirstChild, out property) == VSConstants.S_OK)
                {
                    uint childnode = (uint)(int)property;
                    if (childnode == VSConstants.VSITEMID_NIL)
                    {
                        continue;
                    }

                    DebugWalkingNode(pHier, childnode);

                    if ((pHier.GetProperty(childnode, (int)__VSHPROPID.VSHPROPID_Expandable, out property) == VSConstants.S_OK && (int)property != 0) ||
                        (pHier.GetProperty(childnode, (int)__VSHPROPID2.VSHPROPID_Container, out property) == VSConstants.S_OK && (bool)property))
                    {
                        nodesToWalk.Enqueue(childnode);
                    }
                    else
                    {
                        projectNodes.Add(childnode);
                    }

                    while (pHier.GetProperty(childnode, (int)__VSHPROPID.VSHPROPID_NextSibling, out property) == VSConstants.S_OK)
                    {
                        childnode = (uint)(int)property;
                        if (childnode == VSConstants.VSITEMID_NIL)
                        {
                            break;
                        }

                        DebugWalkingNode(pHier, childnode);

                        if ((pHier.GetProperty(childnode, (int)__VSHPROPID.VSHPROPID_Expandable, out property) == VSConstants.S_OK && (int)property != 0) ||
                            (pHier.GetProperty(childnode, (int)__VSHPROPID2.VSHPROPID_Container, out property) == VSConstants.S_OK && (bool)property)  ) 
                        {
                            nodesToWalk.Enqueue(childnode);
                        }
                        else
                        {
                            projectNodes.Add(childnode);
                        }
                    }
                }

            }

            return projectNodes;
        }