--- /dev/null
+/*
+ * gnu/regexp/REException.java
+ * Copyright (C) 1998-2001 Wes Biggs
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+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();
+ }
+}