Пример #1
0
        public static bool ValidateChain(ChainItem chainItem)
        {
            if (chainItem.PreviousItem != null)
            {
                if (!ValidateChain(chainItem.PreviousItem) || !chainItem.PreviousItem.IsApplicable(chainItem))
                {
                    return(false);
                }
            }

            var hash = chainItem.ComputeHash();

            return(Enumerable.SequenceEqual(chainItem.Hash, hash));
        }
Пример #2
0
        public static bool IsTheSameChainItems(ChainItem chainItem1, ChainItem chainItem2)
        {
            if (chainItem1 == null)
            {
                throw new ArgumentNullException("chainItem1");
            }
            if (chainItem2 == null)
            {
                throw new ArgumentNullException("chainItem2");
            }

            int       offset     = 0;
            ChainItem parentItem = null;
            ChainItem childItem  = null;

            if (chainItem1.Index == chainItem2.Index)
            {
                return(Enumerable.SequenceEqual(chainItem1.Hash, chainItem2.Hash));
            }
            else if (chainItem1.Index < chainItem2.Index)
            {
                offset     = chainItem2.Index - chainItem1.Index;
                childItem  = chainItem1;
                parentItem = chainItem2;
            }
            else if (chainItem1.Index > chainItem2.Index)
            {
                offset     = chainItem1.Index - chainItem2.Index;
                parentItem = chainItem1;
                childItem  = chainItem2;
            }

            while ((offset > 0) && parentItem != null)
            {
                parentItem = parentItem.PreviousItem;
                offset--;
            }

            return(parentItem != null && IsTheSameChainItems(parentItem, childItem));
        }
Пример #3
0
        public ChainItem(ChainItem previousItem, string payload)
        {
            if (previousItem == null)
            {
                throw new ArgumentNullException("previousItem");
            }
            if (!ValidateChain(previousItem))
            {
                throw new ArgumentException("previousItem");
            }

            Index        = previousItem.Index + 1;
            PreviousItem = previousItem;
            Payload      = payload ?? string.Empty;

            Hash = ComputeHash();

            if (!PreviousItem.IsApplicable(this))
            {
                throw new InvalidOperationException("Текущий элемент не может быть добавлен к этой цепочке");
            }
        }
Пример #4
0
        static void Main(string[] args)
        {
            var chain = new List <ChainItem>();
            var root  = new ChainItem("ROOT");

            chain.Add(root);

            var currentItem = root;

            for (int i = 0; i < 100; i++)
            {
                currentItem = new ChainItem(currentItem, "Item " + i.ToString());
                chain.Add(currentItem);
            }

            var branchItem = new ChainItem(chain[40], "Branch");

            var r1 = ChainItem.IsTheSameChainItems(chain[23], chain[45]);
            var r2 = ChainItem.IsTheSameChainItems(chain[23], chain[23]);
            var r3 = ChainItem.IsTheSameChainItems(chain[56], chain[13]);
            var r4 = ChainItem.IsTheSameChainItems(branchItem, chain[13]);
            var r5 = ChainItem.IsTheSameChainItems(branchItem, chain[56]);
        }
Пример #5
0
 protected virtual bool IsApplicable(ChainItem nextChainItem)
 {
     return(true);
 }