* lily/include/book.hh (class Book): idem.

[lilypond.git] / lily / include / smobs.hh

diff --git a/lily/include/smobs.hh b/lily/include/smobs.hh
index c563f6df19aff2121c26c75c3f0b9fe36d7791be..dd384786edc3bc61696f70563aaea19faf5bff76 100644 (file)
--- a/lily/include/smobs.hh
+++ b/lily/include/smobs.hh
@@ -3,13 +3,14 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1999--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1999--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #ifndef SMOBS_HH
 #define SMOBS_HH
 
 #include "lily-guile.hh"
+#include "virtual-methods.hh"
 
 /*
   Smobs are GUILEs mechanism of exporting C(++) objects to the Scheme
@@ -120,7 +121,10 @@
   private:                                     \
   void smobify_self ();                                \
   SCM self_scm_;                               \
+  SCM protection_cons_;                                \
   public:                                      \
+  SCM unprotect ();                            \
+  void protect ();                             \
   SCM self_scm () const { return self_scm_; }  \
   private:
 
@@ -133,5 +137,8 @@
 
 #define DECLARE_TYPE_P(CL) extern SCM CL ## _type_p_proc
 
+void protect_smob (SCM smob, SCM *prot_cons);
+void unprotect_smob (SCM smob, SCM *prot_cons);
+
 #endif /* SMOBS_HH */