PrimitivePowerMultiplier.java

/*******************************************************************************
 * Copyright (c) 2013 Stephen F. Siegel, University of Delaware.
 * 
 * This file is part of SARL.
 * 
 * SARL is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 * 
 * SARL is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with SARL. If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
package edu.udel.cis.vsl.sarl.ideal.common;

import edu.udel.cis.vsl.sarl.IF.number.IntegerNumber;
import edu.udel.cis.vsl.sarl.ideal.IF.IdealFactory;
import edu.udel.cis.vsl.sarl.ideal.IF.PrimitivePower;
import edu.udel.cis.vsl.sarl.util.BinaryOperator;

/**
 * Multiply p^i*p^j, where p is a NumericPrimitive and i and j are positive
 * IntObjects. The answer is p^{i+j}.
 * 
 * @author siegel
 * 
 */
class PrimitivePowerMultiplier implements BinaryOperator<PrimitivePower> {

	private IdealFactory factory;

	public PrimitivePowerMultiplier(IdealFactory factory) {
		this.factory = factory;
	}

	@Override
	public PrimitivePower apply(PrimitivePower arg0, PrimitivePower arg1) {
		return factory.primitivePower(arg0.primitive(factory), factory
				.objectFactory()
				.numberObject((IntegerNumber) factory.numberFactory().add(
						arg0.primitivePowerExponent(factory).getNumber(),
						arg1.primitivePowerExponent(factory).getNumber())));
	}
}