| /* gnu/regexp/REException.java |
| Copyright (C) 1998-2001, 2004 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., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 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 gnu.regexp; |
| |
| import java.text.MessageFormat; |
| |
| /** |
| * This is the regular expression exception class. An exception of this type |
| * defines the three attributes: |
| * <OL> |
| * <LI> A descriptive message of the error. |
| * <LI> An integral type code equivalent to one of the statically |
| * defined symbols listed below. |
| * <LI> The approximate position in the input string where the error |
| * occurred. |
| * </OL> |
| * |
| * @author <A HREF="mailto:wes@cacas.org">Wes Biggs</A> |
| */ |
| |
| public class REException extends Exception { |
| private int type; |
| private int pos; |
| |
| // Error conditions from GNU regcomp(3) manual |
| |
| /** |
| * Error flag. |
| * Invalid use of repetition operators such as using |
| * `*' as the first character. |
| */ |
| public static final int REG_BADRPT = 1; |
| |
| /** |
| * Error flag. |
| * Invalid use of back reference operator. |
| */ |
| public static final int REG_BADBR = 2; |
| |
| /** |
| * Error flag. |
| * Un-matched brace interval operators. |
| */ |
| public static final int REG_EBRACE = 3; |
| |
| /** |
| * Error flag. |
| * Un-matched bracket list operators. |
| */ |
| public static final int REG_EBRACK = 4; |
| |
| /** |
| * Error flag. |
| * Invalid use of the range operator, eg. the ending |
| * point of the range occurs prior to the starting |
| * point. |
| */ |
| public static final int REG_ERANGE = 5; |
| |
| /** |
| * Error flag. |
| * Unknown character class name. <B>Not implemented</B>. |
| */ |
| public static final int REG_ECTYPE = 6; |
| |
| /** |
| * Error flag. |
| * Un-matched parenthesis group operators. |
| */ |
| public static final int REG_EPAREN = 7; |
| |
| /** |
| * Error flag. |
| * Invalid back reference to a subexpression. |
| */ |
| public static final int REG_ESUBREG = 8; |
| |
| /** |
| * Error flag. |
| * Non specific error. <B>Not implemented</B>. |
| */ |
| public static final int REG_EEND = 9; |
| |
| /** |
| * Error flag. |
| * Invalid escape sequence. <B>Not implemented</B>. |
| */ |
| public static final int REG_ESCAPE = 10; |
| |
| /** |
| * Error flag. |
| * Invalid use of pattern operators such as group or list. |
| */ |
| public static final int REG_BADPAT = 11; |
| |
| /** |
| * Error flag. |
| * Compiled regular expression requires a pattern |
| * buffer larger than 64Kb. <B>Not implemented</B>. |
| */ |
| public static final int REG_ESIZE = 12; |
| |
| /** |
| * Error flag. |
| * The regex routines ran out of memory. <B>Not implemented</B>. |
| */ |
| public static final int REG_ESPACE = 13; |
| |
| REException(String msg, int type, int position) { |
| super(msg); |
| this.type = type; |
| this.pos = position; |
| } |
| |
| /** |
| * Returns the type of the exception, one of the constants listed above. |
| */ |
| |
| public int getType() { |
| return type; |
| } |
| |
| /** |
| * Returns the position, relative to the string or character array being |
| * compiled, where the error occurred. This position is generally the point |
| * where the error was detected, not necessarily the starting index of |
| * a bad subexpression. |
| */ |
| public int getPosition() { |
| return pos; |
| } |
| |
| /** |
| * Reports the descriptive message associated with this exception |
| * as well as its index position in the string or character array |
| * being compiled. |
| */ |
| public String getMessage() { |
| Object[] args = {new Integer(pos)}; |
| StringBuffer sb = new StringBuffer(); |
| String prefix = RE.getLocalizedMessage("error.prefix"); |
| sb.append(MessageFormat.format(prefix, args)); |
| sb.append('\n'); |
| sb.append(super.getMessage()); |
| return sb.toString(); |
| } |
| } |