Util.java Source File

00001 package edu.ksu.cis.bandera.bui;
00002 
00003 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
00004  * Bandera, a Java(TM) analysis and transformation toolkit           *
00005  * Copyright (C) 2000   Robby (robby@cis.ksu.edu)                    *
00006  * All rights reserved.                                              *
00007  *                                                                   *
00008  * This work was done as a project in the SAnToS Laboratory,         *
00009  * Department of Computing and Information Sciences, Kansas State    *
00010  * University, USA (http://www.cis.ksu.edu/santos).                  *
00011  * It is understood that any modification not identified as such is  *
00012  * not covered by the preceding statement.                           *
00013  *                                                                   *
00014  * This work is free software; you can redistribute it and/or        *
00015  * modify it under the terms of the GNU Library General Public       *
00016  * License as published by the Free Software Foundation; either      *
00017  * version 2 of the License, or (at your option) any later version.  *
00018  *                                                                   *
00019  * This work is distributed in the hope that it will be useful,      *
00020  * but WITHOUT ANY WARRANTY; without even the implied warranty of    *
00021  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU *
00022  * Library General Public License for more details.                  *
00023  *                                                                   *
00024  * You should have received a copy of the GNU Library General Public *
00025  * License along with this toolkit; if not, write to the             *
00026  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,      *
00027  * Boston, MA  02111-1307, USA.                                      *
00028  *                                                                   *
00029  * Java is a trademark of Sun Microsystems, Inc.                     *
00030  *                                                                   *
00031  * To submit a bug report, send a comment, or get the latest news on *
00032  * this project and other SAnToS projects, please visit the web-site *
00033  *                http://www.cis.ksu.edu/santos                      *
00034  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
00035 public class Util {
00036 /**
00037  * 
00038  * @return boolean
00039  * @param s java.lang.String
00040  */
00041 public static boolean isValidId(String s) {
00042     int length = s.length();
00043     boolean f = length == 0;
00044     
00045     for (int i = 0; i < length; i++) {
00046         char c = s.charAt(i);
00047         if (i == 0) {
00048             if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c == '$') || (c == '_'))) {
00049                 f = true;
00050                 break;
00051             }
00052         } else {
00053             if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
00054                      || (c >= '0' && c <= '9') || (c == '$') || (c == '_'))) {
00055                 f = true;
00056                 break;
00057             }
00058         }
00059     }
00060     return !f;
00061 }
00062 }