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+/* 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., 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 gnu.java.util.regex;
+
+import gnu.java.lang.CPStringBuilder;
+
+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;
+ }
+
+ REException (String msg, Throwable cause, int type, int position)
+ {
+ super (msg, cause);
+ 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)};
+ CPStringBuilder sb = new CPStringBuilder ();
+ String prefix = RE.getLocalizedMessage ("error.prefix");
+ sb.append (MessageFormat.format (prefix, args));
+ sb.append ('\n');
+ sb.append (super.getMessage ());
+ return sb.toString ();
+ }
+}