public override void Eval(IEvolutionState state, int thread, GPData input, ADFStack stack, GPIndividual individual, IProblem problem)
{
// get the current context
var c = stack.Top(0);
if (c == null)
{
// uh oh
state.Output.Fatal("No context with which to evaluate ADFArgument terminal " + ToStringForError()
+ ". This often happens if you evaluate a tree by hand which is supposed to only be an ADF's associated tree.");
}
c.Evaluate(state, thread, input, stack, individual, problem, Argument);
}
/// <summary>
/// Increases Arguments to accommodate space if necessary. Sets adf to a.
/// You need to then fill out the Arguments yourself.
/// </summary>
public void PrepareADF(ADF a, GPProblem problem)
{
// set to the length requested or longer
if (a.Children.Length > Arguments.Length)
{
var newArguments = new GPData[a.Children.Length];
Array.Copy(Arguments, 0, newArguments, 0, Arguments.Length);
// fill gap -- ugh, luckily this doesn't happen but a few times
for (var x = Arguments.Length; x < newArguments.Length; x++)
{
newArguments[x] = (GPData)problem.Input.Clone();
}
Arguments = newArguments;
}
Adf = a;
}
public override void Eval(IEvolutionState state, int thread, GPData input, ADFStack stack, GPIndividual individual, IProblem problem)
{
// prepare a context
var c = stack.Push(stack.Take());
c.PrepareADM(this);
// evaluate the top of the associatedTree
individual.Trees[AssociatedTree].Child.Eval(state, thread, input, stack, individual, problem);
// pop the context off, and we're done!
if (stack.Pop(1) != 1)
{
state.Output.Fatal("Stack prematurely empty for " + ToStringForError());
}
}
public override void Setup(IEvolutionState state, IParameter paramBase)
{
var def = DefaultBase;
// BRS: MUST set up GPData before ADFStack, so that ADFContext has access to state.Evaluator.p_problem.Data
// This avoids a reference to GPProblem.P_DATA, and thus allows us to use interfaces instead of concrete types
// Important for decoupling and Inversion of Control (IoC).
IParameter p = paramBase.Push(P_DATA);
Input = (GPData)state.Parameters.GetInstanceForParameterEq(p, def.Push(P_DATA), typeof(GPData));
Input.Setup(state, p);
p = paramBase.Push(P_STACK);
Stack = (ADFStack)state.Parameters.GetInstanceForParameterEq(p, def.Push(P_STACK), typeof(ADFStack));
Stack.Setup(state, p);
}
/// <summary>
/// Evaluates the argument number in the current context
/// </summary>
public virtual void Evaluate(IEvolutionState state, int thread, GPData input, ADFStack stack,
GPIndividual individual, IProblem problem, int argument)
{
// do I have that many Arguments?
if ((argument >= Adf.Children.Length) || argument < 0)
// uh oh
{
individual.PrintIndividual(state, 0);
state.Output.Fatal("Invalid argument number for " + Adf.ErrorInfo());
}
// Am I an ADM or an ADF?
//if (Adf == null)
// state.Output.Fatal("ADF is null for " + Adf.ErrorInfo());
//else
if (!(Adf is ADM)) // it's an ADF
{
Arguments[argument].CopyTo(input);
}
else // it's an ADM
{
// get rid of my context temporarily
if (stack.MoveOntoSubstack(1) != 1)
{
state.Output.Fatal("Substack prematurely empty for " + Adf.ErrorInfo());
}
// Call the GPNode
Adf.Children[argument].Eval(state, thread, input, stack, individual, problem);
// restore my context
if (stack.MoveFromSubstack(1) != 1)
{
state.Output.Fatal("Stack prematurely empty for " + Adf.ErrorInfo());
}
}
}
/// <summary>
/// Modifies gpd so that gpd is equivalent to us. You may
/// safely assume that gpd is of the same class as we are.
/// Do not share references with the other object, except to
/// read-only data: instead, copy any read-write data as necessary.
/// </summary>
public virtual void CopyTo(GPData gpd)
{
}