X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmelody-engraver.cc;h=65f464c357e16982085603a0d86013508342159d;hb=97a0169312a260933246ab224e4f8b0969871dd5;hp=0ebd1324506ebf7b404a3ab640ba57e746cf4f91;hpb=08560a1b8076630c4fc6cb9b902614d8b74fd6fc;p=lilypond.git

diff --git a/lily/melody-engraver.cc b/lily/melody-engraver.cc
index 0ebd132450..65f464c357 100644
--- a/lily/melody-engraver.cc
+++ b/lily/melody-engraver.cc
@@ -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
@@ -29,14 +29,16 @@ class Melody_engraver : public Engraver
   Grob *stem_;
 protected:
 
-  DECLARE_ACKNOWLEDGER (stem);
-  DECLARE_ACKNOWLEDGER (slur);
+  void acknowledge_stem (Grob_info);
+  void acknowledge_slur (Grob_info);
   TRANSLATOR_DECLARATIONS (Melody_engraver);
   void stop_translation_timestep ();
+  void process_acknowledged ();
   void process_music ();
 };
 
-Melody_engraver::Melody_engraver ()
+Melody_engraver::Melody_engraver (Context *c)
+  : Engraver (c)
 {
   stem_ = 0;
   melody_item_ = 0;
@@ -49,8 +51,12 @@ Melody_engraver::process_music ()
     melody_item_ = 0;
 }
 
+/*
+  Used to be in stop_translation_timestep, but grobs can't
+  be created here.
+*/
 void
-Melody_engraver::stop_translation_timestep ()
+Melody_engraver::process_acknowledged ()
 {
   if (stem_
       && !is_direction (stem_->get_property_data ("neutral-direction")))
@@ -66,6 +72,11 @@ Melody_engraver::stop_translation_timestep ()
           Melody_spanner::add_stem (melody_item_, stem_);
         }
     }
+}
+
+void
+Melody_engraver::stop_translation_timestep ()
+{
   stem_ = 0;
 }
 
@@ -83,8 +94,13 @@ Melody_engraver::acknowledge_stem (Grob_info info)
 
 #include "translator.icc"
 
-ADD_ACKNOWLEDGER (Melody_engraver, stem);
-ADD_ACKNOWLEDGER (Melody_engraver, slur);
+
+void
+Melody_engraver::boot ()
+{
+  ADD_ACKNOWLEDGER (Melody_engraver, stem);
+  ADD_ACKNOWLEDGER (Melody_engraver, slur);
+}
 
 ADD_TRANSLATOR (Melody_engraver,
                 /* doc */