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diff --git a/ACE/apps/gperf/src/Iterator.h b/ACE/apps/gperf/src/Iterator.h
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+// -*- C++ -*-
+
+// $Id$
+
+// Copyright (C) 1989 Free Software Foundation, Inc.
+// written by Douglas C. Schmidt (schmidt@cs.wustl.edu)
+
+// This file is part of GNU GPERF.
+
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+
+// This program 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 for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+#ifndef ITERATOR_H
+#define ITERATOR_H
+
+#include "ace/config-all.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "Options.h"
+
+#if defined (ACE_HAS_GPERF)
+class Iterator
+{
+  // = TITLE
+  //   Provides an Iterator that expands and decodes a control string
+  //   containing digits and ranges, returning an integer every time the
+  //   generator function is called.
+  //
+  // = DESCRIPTION
+  //   This class is used to decode the user's key position requests.
+  //   For example: "-k 1,2,5-10,$" will return 1, 2, 5, 6, 7, 8, 9,
+  //   10, and 0 ( representing the abstract ``last character of the
+  //   key'' on successive calls to the member function operator ().
+  //   No errors are handled in these routines, they are passed back
+  //   to the calling routines via a user-supplied Error_Value */
+public:
+  Iterator (char *s,
+            int lo,
+            int hi,
+            int word_end,
+            int bad_val,
+            int key_end);
+  int operator () (void);
+
+private:
+  char *str;
+  // A pointer to the string provided by the user.
+
+  int end;
+  // Value returned after last key is processed.
+
+  int end_word;
+  // A value marking the abstract ``end of word'' (usually '$').
+
+  int error_value;
+  // Error value returned when input is syntactically erroneous.
+
+  int hi_bound;
+  // Greatest possible value, inclusive.
+
+  int lo_bound;
+  // Smallest possible value, inclusive.
+};
+
+#endif /* ACE_HAS_GPERF */
+#endif /* ITERATOR_H */