--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.javadoc/share/classes/com/sun/tools/javadoc/main/SourcePositionImpl.java	Mon May 09 16:52:15 2016 -0700
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2001, 2015, 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 com.sun.tools.javadoc.main;
+
+import java.io.File;
+import javax.tools.FileObject;
+
+import com.sun.javadoc.SourcePosition;
+import com.sun.tools.javac.util.Position;
+
+/**
+ * A source position: filename, line number, and column number.
+ *
+ *  <p><b>This is NOT part of any supported API.
+ *  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>
+ *
+ * @since J2SE1.4
+ * @author Neal M Gafter
+ * @author Michael Van De Vanter (position representation changed to char offsets)
+ */
+public class SourcePositionImpl implements SourcePosition {
+    FileObject filename;
+    int position;
+    Position.LineMap lineMap;
+
+    /** The source file. Returns null if no file information is
+     *  available. */
+    public File file() {
+        return (filename == null) ? null : new File(filename.getName());
+    }
+
+    /** The source file. Returns null if no file information is
+     *  available. */
+    public FileObject fileObject() {
+        return filename;
+    }
+
+    /** The line in the source file. The first line is numbered 1;
+     *  0 means no line number information is available. */
+    public int line() {
+        if (lineMap == null) {
+            return 0;
+        } else {
+            return lineMap.getLineNumber(position);
+        }
+    }
+
+    /** The column in the source file. The first column is
+     *  numbered 1; 0 means no column information is available.
+     *  Columns count characters in the input stream; a tab
+     *  advances the column number to the next 8-column tab stop.
+     */
+    public int column() {
+        if (lineMap == null) {
+            return 0;
+        }else {
+            return lineMap.getColumnNumber(position);
+        }
+    }
+
+    private SourcePositionImpl(FileObject file, int position,
+                               Position.LineMap lineMap) {
+        super();
+        this.filename = file;
+        this.position = position;
+        this.lineMap = lineMap;
+    }
+
+    public static SourcePosition make(FileObject file, int pos,
+                                      Position.LineMap lineMap) {
+        if (file == null) return null;
+        return new SourcePositionImpl(file, pos, lineMap);
+    }
+
+    public String toString() {
+        // Backwards compatibility hack. ZipFileObjects use the format
+        // zipfile(zipentry) but javadoc has been using zipfile/zipentry
+        String fn = filename.getName();
+        if (fn.endsWith(")")) {
+            int paren = fn.lastIndexOf("(");
+            if (paren != -1) {
+                int i = paren+1;
+                if (fn.charAt(i) == '/')
+                    i++;
+                fn = fn.substring(0, paren)
+                        + File.separatorChar
+                        + fn.substring(i, fn.length() - 1);
+            }
+        }
+
+        if (position == Position.NOPOS)
+            return fn;
+        else
+            return fn + ":" + line();
+    }
+}