package jcgp.function;

import jcgp.exceptions.InvalidArgumentsException;
import jcgp.population.Connection;

public class Multiplication extends Function {

	private int arity = 2;

	@Override
	public Object run(Connection... connections) {
		if (connections.length < arity) {
			throw new InvalidArgumentsException("Not enough connections were given.");
		} else if (connections[0].getValue() instanceof Integer) {
			Integer arg1 = ((Integer) connections[0].getValue());
			Integer arg2 = ((Integer) connections[1].getValue());
			Integer result = arg1 * arg2;
			
			System.out.println(arg1 + " * " + arg2 + " = " + result);
			return result;
		} else {
			throw new InvalidArgumentsException("Wrong data type, this function takes Integer.");
		}
	}

	@Override
	public int getArity() {
		return arity;
	}

}