8187443: Forest Consolidation: Move files to unified layout

Reviewed-by: darcy, ihse

src/java.base/share/classes/java/util/regex/PatternSyntaxException.java

@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.util.regex;
+
+import sun.security.action.GetPropertyAction;
+
+
+/**
+ * Unchecked exception thrown to indicate a syntax error in a
+ * regular-expression pattern.
+ *
+ * @author  unascribed
+ * @since 1.4
+ * @spec JSR-51
+ */
+
+public class PatternSyntaxException
+    extends IllegalArgumentException
+{
+    private static final long serialVersionUID = -3864639126226059218L;
+
+    private final String desc;
+    private final String pattern;
+    private final int index;
+
+    /**
+     * Constructs a new instance of this class.
+     *
+     * @param  desc
+     *         A description of the error
+     *
+     * @param  regex
+     *         The erroneous pattern
+     *
+     * @param  index
+     *         The approximate index in the pattern of the error,
+     *         or {@code -1} if the index is not known
+     */
+    public PatternSyntaxException(String desc, String regex, int index) {
+        this.desc = desc;
+        this.pattern = regex;
+        this.index = index;
+    }
+
+    /**
+     * Retrieves the error index.
+     *
+     * @return  The approximate index in the pattern of the error,
+     *         or {@code -1} if the index is not known
+     */
+    public int getIndex() {
+        return index;
+    }
+
+    /**
+     * Retrieves the description of the error.
+     *
+     * @return  The description of the error
+     */
+    public String getDescription() {
+        return desc;
+    }
+
+    /**
+     * Retrieves the erroneous regular-expression pattern.
+     *
+     * @return  The erroneous pattern
+     */
+    public String getPattern() {
+        return pattern;
+    }
+
+    private static final String nl =
+            GetPropertyAction.privilegedGetProperty("line.separator");
+
+    /**
+     * Returns a multi-line string containing the description of the syntax
+     * error and its index, the erroneous regular-expression pattern, and a
+     * visual indication of the error index within the pattern.
+     *
+     * @return  The full detail message
+     */
+    public String getMessage() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(desc);
+        if (index >= 0) {
+            sb.append(" near index ");
+            sb.append(index);
+        }
+        sb.append(nl);
+        sb.append(pattern);
+        if (index >= 0) {
+            sb.append(nl);
+            for (int i = 0; i < index; i++) sb.append(' ');
+            sb.append('^');
+        }
+        return sb.toString();
+    }
+
+}