//mutateExpressionTree :: LeagueStatement -> Different LeagueStatement
private LeagueStatement mutateExpressionTree(LeagueStatement expression, double mutationChance)
{
//this is the biggest sticking point in terms of generalizing the approach. How do you
//generalize mutation??
double roll = GetRandomPercent();
List <LeagueStatement> newChildren = new List <LeagueStatement>();
foreach (LeagueStatement child in expression.getChildren())
{
newChildren.Add(mutateExpressionTree(child, mutationChance));
}
LeagueStatement newExpression = (LeagueStatement)expression.Clone();
newExpression.setChildren(newChildren.ToArray());
if (roll < mutationChance) //mutate!
{
newExpression = newExpression.mutate();
}
return(newExpression);
}
public Oracle(LeagueStatement prophecy)
{
this.prophecy = prophecy;
}