X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fitem.hh;h=914d2ef7b8311b6c622ae0158d680b1846e9e9e5;hb=8f2f4d6f0af1626a333050d367211a7d73437082;hp=c67b160636b5afa894975abb83dd50694a8ac85d;hpb=072d33dbc1f31fafa96c24ac579b1ba4422d2eee;p=lilypond.git

diff --git a/lily/include/item.hh b/lily/include/item.hh
index c67b160636..914d2ef7b8 100644
--- a/lily/include/item.hh
+++ b/lily/include/item.hh
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1997--2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  Copyright (C) 1997--2015 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
@@ -36,6 +36,13 @@ public:
   Item (SCM);
   Item (Item const &);
 
+  static Item *unsmob (SCM g) {
+    return dynamic_cast <Item *> (Grob::unsmob (g));
+  }
+  static bool is_smob (SCM g) {
+    return Grob::is_smob (g) && unsmob (g);
+  }
+
   virtual Grob *clone () const;
 
   static bool is_non_musical (Grob *);