/*
 * The TauP Toolkit: Flexible Seismic Travel-Time and Raypath Utilities.
 * Copyright (C) 1998-2000 University of South Carolina
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 * 
 * This program 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA.
 * 
 * The current version can be found at <A
 * HREF="www.seis.sc.edu">http://www.seis.sc.edu</A>
 * 
 * Bug reports and comments should be directed to H. Philip Crotwell,
 * crotwell@seis.sc.edu or Tom Owens, owens@seis.sc.edu
 * 
 */
package edu.sc.seis.TauP;

/**
 * utility class for checking assertions. The methods simply throw an
 * IllegalArguementException if the assertion is not met.
 * 
 * @version 1.1.3 Wed Jul 18 15:00:35 GMT 2001
 * 
 * 
 * 
 */
public class Assert {

    public static void isTrue(boolean b, String s)
            throws IllegalArgumentException {
        if(b == false) {
            throw new IllegalArgumentException(s);
        }
    }

    public static void isFalse(boolean b, String s)
            throws IllegalArgumentException {
        isTrue(!b, s);
    }

    public static void isNotNull(Object o, String s)
            throws IllegalArgumentException {
        if(o == null) {
            throw new IllegalArgumentException(s);
        }
    }
}
