private Element InternalMutate(Element element, int mutationDepth, int currentDepth)
{
if (!_canStillSwap)
{
return element;
}
if (currentDepth == mutationDepth)
{
var valueElement = element as ValueElement;
if (valueElement != null)
{
return MutateValueElement();
}
var binaryElement = element as BinaryOperator;
if (binaryElement != null)
{
return MutateBinaryElement(binaryElement);
}
}
else
{
var binaryOperator = element as BinaryOperator;
if (binaryOperator != null)
{
var leftChild = binaryOperator.LeftElement;
var rightChild = binaryOperator.RightElement;
++currentDepth;
leftChild = InternalMutate(leftChild, mutationDepth, currentDepth);
rightChild = InternalMutate(rightChild, mutationDepth, currentDepth);
binaryOperator.LeftElement = leftChild;
binaryOperator.RightElement = rightChild;
}
}
return element;
}
public void AddOperations(Element element)
{
_nodes = element;
GetTreeDepth();
}
public void Mutate()
{
_canStillSwap = true;
var mutationDepth = GetMutationDepth();
var currentDepth = 0;
_nodes = InternalMutate(_nodes, mutationDepth, currentDepth);
}
