/*
 *
 * From org/jgap/gp/function/And.java
 *
 * Makes it applicable to Integer and Double
 *
 */

import org.jgap.*;
import org.jgap.gp.*;
import org.jgap.gp.impl.*;
import org.jgap.util.*;

/**
 * The boolean and operation on a double.
 *
 * @author Hakan Kjellerstrand
 */
public class AndD
    extends MathCommand implements IMutateable, ICloneable {

  public AndD(final GPConfiguration a_conf)
      throws InvalidConfigurationException {
    this(a_conf, CommandGene.DoubleClass);
  }

  public AndD(final GPConfiguration a_conf, Class a_returnType)
      throws InvalidConfigurationException {
    super(a_conf, 2, a_returnType);
  }

  public CommandGene applyMutation(int index, double a_percentage)
      throws InvalidConfigurationException {
    CommandGene mutant;
    if (a_percentage < 0.5d) {
      mutant = new XorD(getGPConfiguration());
    }
    else {
      mutant = new OrD(getGPConfiguration());
    }
    return mutant;
  }

  /**
   * Clones the object. Simple and straight forward implementation here.
   *
   * @return cloned instance of this object
   *
   * @author Hakan Kjellerstrand (based on Klaus Meffert method)
   */
  public Object clone() {
    try {
      AndD result = new AndD(getGPConfiguration(), getReturnType());
      return result;
    } catch (Exception ex) {
      throw new CloneException(ex);
    }
  }

  public String toString() {
    return "&1 && &2";
  }

  /**
   * @return textual name of this command
   *
   * @author Hakan Kjellerstrand
   * @since 3.2
   */
  public String getName() {
    return "AndD";
  }

    public double execute_double(ProgramChromosome c, int n, Object[] args) {
        double d1 = c.execute_double(n, 0, args);
        double d2 = c.execute_double(n, 1, args);
        boolean b1 = true;
        boolean b2 = true;
        
        if (d1 < 1.0d) {
            b1 = false;
        }
        if (d2 < 1.0d) {
            b2 = false;
        }

        if (b1 & b2) {
            return 1.0d;
        } else {
            return 0.0d;
        }
    }
}