X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fchange-iterator.hh;h=1ba16c09071916727300214f903ffbb6d83ea6e5;hb=5af7cd44435fd26fade6e700a3912630e1553a87;hp=71aa7cb8d3abb2b4b98e00a8501c3523b6f72c7b;hpb=31568c504806f35aac420a394c9eab07abd9faa7;p=lilypond.git

diff --git a/lily/include/change-iterator.hh b/lily/include/change-iterator.hh
index 71aa7cb8d3..1ba16c0907 100644
--- a/lily/include/change-iterator.hh
+++ b/lily/include/change-iterator.hh
@@ -1,9 +1,20 @@
 /*
-  change-iterator.hh -- declare Change_iterator
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  LilyPond 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 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond 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 LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #ifndef CHANGE_ITERATOR_HH
@@ -17,10 +28,14 @@ public:
   /* constructor is public */
   virtual void process (Moment);
   DECLARE_SCHEME_CALLBACK (constructor, ());
-  DECLARE_CLASSNAME(Change_iterator);
+  DECLARE_CLASSNAME (Change_iterator);
+
+  // returns an error message (empty on success)
+  static string change_to (Music_iterator &it,
+                           SCM to_type, const string &to_id);
 
 private:
-  void error (string);
+  void error (const string&);
 };
 
 #endif