/*
* #%L
* org.gitools.ui.app
* %%
* Copyright (C) 2013 - 2014 Universitat Pompeu Fabra - Biomedical Genomics group
* %%
* 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 3 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, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
/* ===================================================
* JFreeSVG : an SVG library for the Java(tm) platform
* ===================================================
*
* (C)opyright 2013, 2014, by Object Refinery Limited. All rights reserved.
*
* Project Info: http://www.jfree.org/jfreesvg/index.html
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* If you do not wish to be bound by the terms of the AGPL, an alternative
* commercial license can be purchased. For details, please see visit the
* JFreeSVG home page:
*
* http://www.jfree.org/jfreesvg
*
*/
package org.gitools.ui.app.svg.jfreesvg;
/**
* A utility class that performs checks for method argument validity.
*/
public class Args {
private Args() {
// no need to instantiate this
}
/**
* Checks that an argument is non-<code>null</code> and throws an
* <code>IllegalArgumentException</code> otherwise.
*
* @param obj the object to check for <code>null</code>.
* @param ref the text name for the parameter (to include in the exception
* message).
*/
public static void nullNotPermitted(Object obj, String ref) {
if (obj == null) {
throw new IllegalArgumentException("Null '" + ref + "' argument.");
}
}
/**
* Checks an array to ensure it has the correct length and throws an
* <code>IllegalArgumentException</code> if it does not.
*
* @param length the required length.
* @param array the array to check.
* @param ref the text name of the array parameter (to include in the
* exception message).
*/
public static void arrayMustHaveLength(int length, boolean[] array,
String ref) {
nullNotPermitted(array, "array");
if (array.length != length) {
throw new IllegalArgumentException("Array '" + ref
+ "' requires length " + length);
}
}
/**
* Checks an array to ensure it has the correct length and throws an
* <code>IllegalArgumentException</code> if it does not.
*
* @param length the required length.
* @param array the array to check.
* @param ref the text name of the array parameter (to include in the
* exception message).
*/
public static void arrayMustHaveLength(int length, double[] array,
String ref) {
nullNotPermitted(array, "array");
if (array.length != length) {
throw new IllegalArgumentException("Array '" + ref
+ "' requires length " + length);
}
}
}