C# (CSharp) CHashSet.UnionWith Exemples

Exemple #1

        public static void Closure(CachedGrammar inst, LinkedHashSet <LRxItem> items)
        {
            Grammar g = inst.m_value;
            IForwardIterator <LRxItem> e1 = items.Begin();
            IForwardIterator <LRxItem> e2 = items.Begin();

            for (; e1.IsAlive; e1.Add())
            {
                LRxItem current = e1.Value;
                if (current.IsEnd)
                {
                    continue;
                }

                int ms = current.MarkSymbol;
                if (!ms.IsTerminal())
                {
                    CHashSet <int> la =
                        current.IsLast
                        ? new CHashSet <int>(current.lookahead)
                        : inst.GetFirst(current.express, current.index + 1);

                    IForwardIterator <GItem> e3 = g.Find(ms);
                    do
                    {
                        LRxItem newit = new LRxItem(e3.Value, la);

                        for (; e2.IsAlive; e2.Add())
                        {
                            if (newit.CoreEquals(e2.Value))
                            {
                                CHashSet <int> ela = e2.Value.lookahead;
                                if (!ela.IsSupersetOf(la))
                                {
                                    ela.UnionWith(la);
                                }

                                goto exit;
                            }
                        }

                        items.Add(newit);

exit:
                        e2.Reset();
                    } while (e3.LazyAdd());
                    e3.Dispose();
                }
            }

            e1.Dispose();
        }