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package jcgp.modules.function;
import jcgp.exceptions.InvalidArgumentsException;
import jcgp.parameters.Parameters;
import jcgp.population.Connection;
public class Arithmetic {
public static class Addition extends Function {
private int arity = 2;
@Override
public Integer run(Connection... connections) {
if (connections.length < arity) {
throw new InvalidArgumentsException("Not enough connections were given.");
} else {
Integer arg1 = ((Integer) connections[0].getValue());
Integer arg2 = ((Integer) connections[1].getValue());
Integer result = arg1 + arg2;
if (Parameters.getDebug()) {
System.out.println(arg1 + " + " + arg2 + " = " + result);
}
return result;
}
}
@Override
public int getArity() {
return arity;
}
}
public static class Subtraction extends Function {
private int arity = 2;
@Override
public Integer run(Connection... connections) {
if (connections.length < arity) {
throw new InvalidArgumentsException("Not enough connections were given.");
} else {
Integer arg1 = ((Integer) connections[0].getValue());
Integer arg2 = ((Integer) connections[1].getValue());
Integer result = arg1 - arg2;
if (Parameters.getDebug()) {
System.out.println(arg1 + " - " + arg2 + " = " + result);
}
return result;
}
}
@Override
public int getArity() {
return arity;
}
}
public static class Multiplication extends Function {
private int arity = 2;
@Override
public Integer run(Connection... connections) {
if (connections.length < arity) {
throw new InvalidArgumentsException("Not enough connections were given.");
} else {
Integer arg1 = ((Integer) connections[0].getValue());
Integer arg2 = ((Integer) connections[1].getValue());
Integer result = arg1 * arg2;
if (Parameters.getDebug()) {
System.out.println(arg1 + " * " + arg2 + " = " + result);
}
return result;
}
}
@Override
public int getArity() {
return arity;
}
}
public static class Division extends Function {
private int arity = 2;
@Override
public Integer run(Connection... connections) {
if (connections.length < arity) {
throw new InvalidArgumentsException("Not enough connections were given.");
} else {
Integer arg1 = ((Integer) connections[0].getValue());
Integer arg2 = ((Integer) connections[1].getValue());
Integer result;
if (arg2 == 0) {
result = 0;
} else {
result = arg1 / arg2;
}
if (Parameters.getDebug()) {
System.out.println(arg1 + " / " + arg2 + " = " + result);
}
return result;
}
}
@Override
public int getArity() {
return arity;
}
}
}
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