protected LinkedListNode <Node> ReplaceSelfWithResult(LinkedListNode <Node> node, double result)
{
var value = new NumberNode(result);
var resultNode = node.List !.AddAfter(node.Next !, value);
resultNode.List !.Remove(resultNode.Previous !.Previous !.Previous !);
resultNode.List !.Remove(resultNode.Previous !.Previous !);
resultNode.List !.Remove(resultNode.Previous !);
return(resultNode);
}
public override LinkedListNode <Node> Apply(LinkedListNode <Node> node)
{
var a = ((ValueNode)node.Previous !.Value).GetValue();
var b = ((ValueNode)node.Next !.Value).GetValue();
var value = new NumberNode(Type == NodeType.PlusOperator ? a + b : a - b);
var result = node.List !.AddAfter(node.Next !, value);
result.List !.Remove(result.Previous !.Previous !.Previous !);
result.List !.Remove(result.Previous !.Previous !);
result.List !.Remove(result.Previous !);
return(result);
}
