public string[] Transform(string from, string to)
{
if (string.IsNullOrEmpty(from))
{
throw new ArgumentNullException(nameof(from));
}
if (string.IsNullOrEmpty(to))
{
throw new ArgumentNullException(nameof(to));
}
// CONSIDER: for cleanliness, maybe ITransformationTraversal needs a "clear/reset" action
traversal.Embark(nodeFactory.CreateNode(from));
do
{
var node = traversal.Disembark();
if (node.Word == to)
{
// hit goal
return(GetRouteTo(node));
}
ModulateAndTraverse(node);
} while (!traversal.IsEmpty);
// transform not possible
return(new string[0]);
}
public TransformationNode Disembark()
{
var node = core.Disembark();
backlogCount.RawValue--;
rateOfDisembark.RawValue++;
return(node);
}