| /* PatternSyntaxException - Indicates illegal pattern for regular expression. |
| Copyright (C) 2002 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath 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, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package java.util.regex; |
| |
| /** |
| * Indicates illegal pattern for regular expression. |
| * Includes state to inspect the pattern and what and where the expression |
| * was not valid regular expression. |
| * @since 1.4 |
| */ |
| public class PatternSyntaxException extends IllegalArgumentException |
| { |
| private static final long serialVersionUID = -3864639126226059218L; |
| |
| /** |
| * Human readable escription of the syntax error. |
| */ |
| private final String desc; |
| |
| /** |
| * The original pattern that contained the syntax error. |
| */ |
| private final String pattern; |
| |
| /** |
| * Index of the first character in the String that was probably invalid, |
| * or -1 when unknown. |
| */ |
| private final int index; |
| |
| /** |
| * Creates a new PatternSyntaxException. |
| * |
| * @param description Human readable escription of the syntax error. |
| * @param pattern The original pattern that contained the syntax error. |
| * @param index Index of the first character in the String that was |
| * probably invalid, or -1 when unknown. |
| */ |
| public PatternSyntaxException(String description, |
| String pattern, |
| int index) |
| { |
| super(description); |
| this.desc = description; |
| this.pattern = pattern; |
| this.index = index; |
| } |
| |
| /** |
| * Returns a human readable escription of the syntax error. |
| */ |
| public String getDescription() |
| { |
| return desc; |
| } |
| |
| /** |
| * Returns the original pattern that contained the syntax error. |
| */ |
| public String getPattern() |
| { |
| return pattern; |
| } |
| |
| /** |
| * Returns the index of the first character in the String that was probably |
| * invalid, or -1 when unknown. |
| */ |
| public int getIndex() |
| { |
| return index; |
| } |
| |
| /** |
| * Returns a string containing a line with the description, a line with |
| * the original pattern and a line indicating with a ^ which character is |
| * probably the first invalid character in the pattern if the index is not |
| * negative. |
| */ |
| public String getMessage() |
| { |
| String lineSep = System.getProperty("line.separator"); |
| StringBuffer sb = new StringBuffer(desc); |
| sb.append(lineSep); |
| sb.append('\t'); |
| sb.append(pattern); |
| if (index != -1) |
| { |
| sb.append(lineSep); |
| sb.append('\t'); |
| for (int i=0; i<index; i++) |
| sb.append(' '); |
| sb.append('^'); |
| } |
| return sb.toString(); |
| } |
| |
| } |