BTDB.KVDBLayer.BTreeMem.BTreeRoot.CreateOrUpdate C# (CSharp) Method

        public void CreateOrUpdate(CreateOrUpdateCtx ctx)
        {
            ctx.TransactionId = _transactionId;
            if (ctx.Stack == null) ctx.Stack = new List<NodeIdxPair>();
            else ctx.Stack.Clear();
            if (_rootNode == null)
            {
                _rootNode = ctx.WholeKeyLen > BTreeLeafComp.MaxTotalLen ? BTreeLeaf.CreateFirst(ctx) : BTreeLeafComp.CreateFirst(ctx);
                _keyValueCount = 1;
                ctx.Stack.Add(new NodeIdxPair { Node = _rootNode, Idx = 0 });
                ctx.KeyIndex = 0;
                ctx.Created = true;
                return;
            }
            ctx.Depth = 0;
            _rootNode.CreateOrUpdate(ctx);
            if (ctx.Split)
            {
                _rootNode = new BTreeBranch(ctx.TransactionId, ctx.Node1, ctx.Node2);
                ctx.Stack.Insert(0, new NodeIdxPair { Node = _rootNode, Idx = ctx.SplitInRight ? 1 : 0 });
            }
            else if (ctx.Update)
            {
                _rootNode = ctx.Node1;
            }
            if (ctx.Created)
            {
                _keyValueCount++;
            }
        }