Fix rest-dot-position.ly

[lilypond.git] / lily / grob-property.cc

diff --git a/lily/grob-property.cc b/lily/grob-property.cc
index 084ea42fbdb60ede609beddcf35b61cf8889f876..d7f29aed3db1e29b7d9ade31f27ed6178dad5f64 100644 (file)
--- a/lily/grob-property.cc
+++ b/lily/grob-property.cc
@@ -19,8 +19,22 @@
 #include "profile.hh"
 #include "simple-closure.hh"
 #include "warn.hh"
+#include "protected-scm.hh"
+
+Protected_scm grob_property_callback_stack = SCM_EOL;
 
 #ifndef NDEBUG
+extern bool debug_property_callbacks;
+
+static void
+print_property_callback_stack ()
+{
+  int frame = 0;
+  for (SCM s = grob_property_callback_stack; scm_is_pair (s); s = scm_cdr (s))
+    message (_f ("%d: %s", frame++, ly_scm_write_string (scm_car (s)).c_str ()));
+}
+
+
 static SCM modification_callback = SCM_EOL;
 static SCM cache_callback = SCM_EOL;
 
@@ -56,6 +70,7 @@ LY_DEFINE (ly_set_property_cache_callback, "ly:set-property-cache-callback",
   cache_callback = cb;
   return SCM_UNSPECIFIED;
 }
+#endif
 
 void
 Grob::instrumented_set_property (SCM sym, SCM v,
@@ -63,6 +78,7 @@ Grob::instrumented_set_property (SCM sym, SCM v,
                                 int line,
                                 char const *fun)
 {
+#ifndef NDEBUG
   if (ly_is_procedure (modification_callback))
     scm_apply_0 (modification_callback,
                 scm_list_n (self_scm (),
@@ -70,9 +86,10 @@ Grob::instrumented_set_property (SCM sym, SCM v,
                             scm_from_int (line),
                             scm_from_locale_string (fun),
                             sym, v, SCM_UNDEFINED));
+#endif
+  
   internal_set_property (sym, v);
 }
-#endif
 
 SCM
 Grob::get_property_alist_chain (SCM def) const
@@ -146,9 +163,16 @@ Grob::internal_get_property (SCM sym) const
 
 #ifndef NDEBUG
   if (val == ly_symbol2scm ("calculation-in-progress"))
-    programming_error (_f ("cyclic dependency: calculation-in-progress encountered for #'%s (%s)",
-                          ly_symbol2string (sym).c_str (),
-                          name ().c_str ()));
+    {
+      programming_error (_f ("cyclic dependency: calculation-in-progress encountered for #'%s (%s)",
+                            ly_symbol2string (sym).c_str (),
+                            name ().c_str ()));
+      if (debug_property_callbacks)
+       {
+         message ("backtrace: ");
+         print_property_callback_stack ();
+       }
+    }
 #endif
   
   if (ly_is_procedure (val)
@@ -161,13 +185,6 @@ Grob::internal_get_property (SCM sym) const
   return val;
 }
 
-#ifndef NDEBUG
-#include "protected-scm.hh"
-
-Protected_scm grob_property_callback_stack = SCM_EOL;
-bool debug_property_callbacks = 0;
-#endif
-
 SCM
 Grob::try_callback_on_alist (SCM *alist, SCM sym, SCM proc)
 {      
@@ -180,7 +197,7 @@ Grob::try_callback_on_alist (SCM *alist, SCM sym, SCM proc)
 
 #ifndef NDEBUG
   if (debug_property_callbacks)
-    grob_property_callback_stack = scm_acons (sym, proc, grob_property_callback_stack);
+    grob_property_callback_stack = scm_cons (scm_list_3 (self_scm (), sym, proc), grob_property_callback_stack);
 #endif
 
   SCM value = SCM_EOL;