iTextSharp.text.pdf.hyphenation.TernaryTree.Iterator.Up C# (CSharp) Метод

            private int Up() {
                Item i = new Item();
                int res = 0;

                if (ns.Count == 0)
                    return -1;

                if (cur != 0 && parent.sc[cur] == 0)
                    return parent.lo[cur];

                bool climb = true;

                while (climb) {
                    i = (Item)ns.Pop();
                    i.child++;
                    switch (i.child) {
                        case (char)1:
                            if (parent.sc[i.parent] != 0) {
                                res = parent.eq[i.parent];
                                ns.Push(i.Clone());
                                ks.Append(parent.sc[i.parent]);
                            } else {
                                i.child++;
                                ns.Push(i.Clone());
                                res = parent.hi[i.parent];
                            }
                            climb = false;
                            break;

                        case (char)2:
                            res = parent.hi[i.parent];
                            ns.Push(i.Clone());
                            if (ks.Length > 0)
                                ks.Length = ks.Length - 1;    // pop
                            climb = false;
                            break;

                        default:
                            if (ns.Count == 0)
                                return -1;
                            climb = true;
                            break;
                    }
                }
                return res;
            }