/*
 * Copyright 2013 Yuichiro Moriguchi
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.morilib.c.pre.expr;

import net.morilib.c.pre.CpreArithmeticException;
import net.morilib.c.pre.CpreCastException;
import net.morilib.c.pre.CpreMacros;

public class CpreRemainderOp extends CpreExpression {

	private CpreExpression e1, e2;

	public CpreRemainderOp(CpreExpression e, CpreExpression f) {
		e1 = e;  e2 = f;
	}

	@Override
	public CpreValue eval(int lineno, CpreMacros m) {
		CpreValue e = e1.eval(lineno, m), f = e2.eval(lineno, m);

		try {
			if(e.isLong() && f.isLong()) {
				return new CpreLiteralInteger(e.toLong() % f.toLong());
			} else {
				throw new CpreCastException(lineno);
			}
		} catch(ArithmeticException z) {
			throw new CpreArithmeticException(lineno, z.getMessage());
		}
	}

}
