/*
* This file is part of JGAP.
*
* JGAP offers a dual license model containing the LGPL as well as the MPL.
*
* For licensing information please see the file license.txt included with JGAP
* or have a look at the top of class org.jgap.Chromosome which representatively
* includes the JGAP license policy applicable for any file delivered with JGAP.
*/
package org.jgap.gp.function;
import org.apache.commons.lang.builder.*;
import org.jgap.*;
import org.jgap.gp.*;
import org.jgap.gp.impl.*;
import org.jgap.gp.terminal.*;
import org.jgap.util.*;
/**
* The for-loop loop from 0 to X-1.
*
* @author Klaus Meffert
* @since 3.0
*/
public class ForXLoop
extends CommandGene implements ICloneable {
/** String containing the CVS revision. Read out via reflection!*/
private final static String CVS_REVISION = "$Revision: 1.12 $";
private Class m_type;
public ForXLoop(final GPConfiguration a_conf, Class a_type)
throws InvalidConfigurationException {
super(a_conf, 1, CommandGene.VoidClass);
m_type = a_type;
}
public String toString() {
return "for(int i=0;i<X;i++) { &1 }";
}
/**
* @return textual name of this command
*
* @author Klaus Meffert
* @since 3.2
*/
public String getName() {
return "ForXLoop";
}
public void execute_void(ProgramChromosome c, int n, Object[] args) {
check(c);
int index = c.getVariableWithReturnType(0, m_type);
if (index < 0) {
throw new IllegalStateException("Variable missing for forX");
}
/**@todo only consider variables appearing before FORX in the program tree*/
Variable var = (Variable) c.getNode(index);
int x;
// Get variable's value as integer ("for" cannot do anything else here).
// ---------------------------------------------------------------------
if (m_type == CommandGene.IntegerClass) {
x = ( (Integer) var.getValue()).intValue();
}
else if (m_type == CommandGene.LongClass) {
x = ( (Long) var.getValue()).intValue();
}
else if (m_type == CommandGene.DoubleClass) {
x = ( (Double) var.getValue()).intValue();
}
else if (m_type == CommandGene.FloatClass) {
x = ( (Float) var.getValue()).intValue();
}
else {
throw new RuntimeException("Type " + m_type + " unknown in ForXCommand");
}
if (x > 15) {
x = 15;
}
for (int i = 0; i < x; i++) {
c.execute_void(n, 0, args);
}
}
public boolean isValid(ProgramChromosome a_program) {
return a_program.getVariableWithReturnType(0, m_type) >= 0;
}
public Class getChildType(IGPProgram a_ind, int a_chromNum) {
return CommandGene.VoidClass;
}
public Class getReturnType() {
return super.getReturnType();
}
/**
* The compareTo-method.
* @param a_other the other object to compare
* @return -1, 0, 1
*
* @author Klaus Meffert
* @since 3.0
*/
public int compareTo(Object a_other) {
int result = super.compareTo(a_other);
if (result != 0) {
return result;
}
ForXLoop other = (ForXLoop) a_other;
return new CompareToBuilder()
.append(m_type, other.m_type)
.toComparison();
}
/**
* The equals-method.
* @param a_other the other object to compare
* @return true if the objects are seen as equal
*
* @author Klaus Meffert
* @since 3.0
*/
public boolean equals(Object a_other) {
try {
ForXLoop other = (ForXLoop) a_other;
return super.equals(a_other) && new EqualsBuilder()
.append(m_type, other.m_type)
.append(size(), other.size())
.isEquals();
} catch (ClassCastException cex) {
return false;
}
}
/**
* Clones the object. Simple and straight forward implementation here.
*
* @return cloned instance of this object
*
* @author Klaus Meffert
* @since 3.4
*/
public Object clone() {
try {
ForXLoop result = new ForXLoop(getGPConfiguration(), m_type);
return result;
} catch (Exception ex) {
throw new CloneException(ex);
}
}
}