--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/javax/tools/ForwardingJavaFileManager.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,167 @@
+/*
+ * Copyright 2005-2006 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package javax.tools;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.Iterator;
+import java.util.Set;
+import javax.tools.JavaFileObject.Kind;
+
+/**
+ * Forwards calls to a given file manager.  Subclasses of this class
+ * might override some of these methods and might also provide
+ * additional fields and methods.
+ *
+ * @param <M> the kind of file manager forwarded to by this object
+ * @author Peter von der Ah&eacute;
+ * @since 1.6
+ */
+public class ForwardingJavaFileManager<M extends JavaFileManager> implements JavaFileManager {
+
+    /**
+     * The file manager which all methods are delegated to.
+     */
+    protected final M fileManager;
+
+    /**
+     * Creates a new instance of ForwardingJavaFileManager.
+     * @param fileManager delegate to this file manager
+     */
+    protected ForwardingJavaFileManager(M fileManager) {
+        fileManager.getClass(); // null check
+        this.fileManager = fileManager;
+    }
+
+    /**
+     * @throws SecurityException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public ClassLoader getClassLoader(Location location) {
+        return fileManager.getClassLoader(location);
+    }
+
+    /**
+     * @throws IOException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public Iterable<JavaFileObject> list(Location location,
+                                         String packageName,
+                                         Set<Kind> kinds,
+                                         boolean recurse)
+        throws IOException
+    {
+        return fileManager.list(location, packageName, kinds, recurse);
+    }
+
+    /**
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public String inferBinaryName(Location location, JavaFileObject file) {
+        return fileManager.inferBinaryName(location, file);
+    }
+
+    /**
+     * @throws IllegalArgumentException {@inheritDoc}
+     */
+    public boolean isSameFile(FileObject a, FileObject b) {
+        return fileManager.isSameFile(a, b);
+    }
+
+    /**
+     * @throws IllegalArgumentException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public boolean handleOption(String current, Iterator<String> remaining) {
+        return fileManager.handleOption(current, remaining);
+    }
+
+    public boolean hasLocation(Location location) {
+        return fileManager.hasLocation(location);
+    }
+
+    public int isSupportedOption(String option) {
+        return fileManager.isSupportedOption(option);
+    }
+
+    /**
+     * @throws IllegalArgumentException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public JavaFileObject getJavaFileForInput(Location location,
+                                              String className,
+                                              Kind kind)
+        throws IOException
+    {
+        return fileManager.getJavaFileForInput(location, className, kind);
+    }
+
+    /**
+     * @throws IllegalArgumentException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public JavaFileObject getJavaFileForOutput(Location location,
+                                               String className,
+                                               Kind kind,
+                                               FileObject sibling)
+        throws IOException
+    {
+        return fileManager.getJavaFileForOutput(location, className, kind, sibling);
+    }
+
+    /**
+     * @throws IllegalArgumentException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public FileObject getFileForInput(Location location,
+                                      String packageName,
+                                      String relativeName)
+        throws IOException
+    {
+        return fileManager.getFileForInput(location, packageName, relativeName);
+    }
+
+    /**
+     * @throws IllegalArgumentException {@inheritDoc}
+     * @throws IllegalStateException {@inheritDoc}
+     */
+    public FileObject getFileForOutput(Location location,
+                                       String packageName,
+                                       String relativeName,
+                                       FileObject sibling)
+        throws IOException
+    {
+        return fileManager.getFileForOutput(location, packageName, relativeName, sibling);
+    }
+
+    public void flush() throws IOException {
+        fileManager.flush();
+    }
+
+    public void close() throws IOException {
+        fileManager.close();
+    }
+}