--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/javac/nio/PathFileManager.java	Fri Dec 11 14:26:27 2009 -0800
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2009 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 com.sun.tools.javac.nio;
+
+import java.io.IOException;
+import java.nio.file.FileSystem;
+import java.nio.file.Path;
+import javax.tools.FileObject;
+import javax.tools.JavaFileManager;
+import javax.tools.JavaFileObject;
+
+/**
+ *  File manager based on {@linkplain File java.nio.file.Path}.
+ *
+ *  Eventually, this should be moved to javax.tools.
+ *  Also, JavaCompiler might reasonably provide a method getPathFileManager,
+ *  similar to {@link javax.tools.JavaCompiler#getStandardFileManager
+ *  getStandardFileManager}. However, would need to be handled carefully
+ *  as another forward reference from langtools to jdk.
+ *
+ *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
+ *  you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ */
+public interface PathFileManager extends JavaFileManager {
+    /**
+     * Get the default file system used to create paths. If no value has been
+     * set, the default file system is {@link FileSystems#getDefault}.
+     */
+    FileSystem getDefaultFileSystem();
+
+    /**
+     * Set the default file system used to create paths.
+     * @param fs the default file system used to create any new paths.
+     */
+    void setDefaultFileSystem(FileSystem fs);
+
+    /**
+     * Get file objects representing the given files.
+     *
+     * @param paths a list of paths
+     * @return a list of file objects
+     * @throws IllegalArgumentException if the list of paths includes
+     * a directory
+     */
+    Iterable<? extends JavaFileObject> getJavaFileObjectsFromPaths(
+        Iterable<? extends Path> paths);
+
+    /**
+     * Get file objects representing the given paths.
+     * Convenience method equivalent to:
+     *
+     * <pre>
+     *     getJavaFileObjectsFromPaths({@linkplain java.util.Arrays#asList Arrays.asList}(paths))
+     * </pre>
+     *
+     * @param paths an array of paths
+     * @return a list of file objects
+     * @throws IllegalArgumentException if the array of files includes
+     * a directory
+     * @throws NullPointerException if the given array contains null
+     * elements
+     */
+    Iterable<? extends JavaFileObject> getJavaFileObjects(Path... paths);
+
+    /**
+     * Return the Path for a file object that has been obtained from this
+     * file manager.
+     *
+     * @param fo A file object that has been obtained from this file manager.
+     * @return The underlying Path object.
+     * @throws IllegalArgumentException is the file object was not obtained from
+     * from this file manager.
+     */
+    Path getPath(FileObject fo);
+
+    /**
+     * Get the search path associated with the given location.
+     *
+     * @param location a location
+     * @return a list of paths or {@code null} if this location has no
+     * associated search path
+     * @see #setLocation
+     */
+    Iterable<? extends Path> getLocation(Location location);
+
+    /**
+     * Associate the given search path with the given location.  Any
+     * previous value will be discarded.
+     *
+     * @param location a location
+     * @param searchPath a list of files, if {@code null} use the default
+     * search path for this location
+     * @see #getLocation
+     * @throws IllegalArgumentException if location is an output
+     * location and searchpath does not contain exactly one element
+     * @throws IOException if location is an output location and searchpath
+     * does not represent an existing directory
+     */
+    void setLocation(Location location, Iterable<? extends Path> searchPath) throws IOException;
+}