X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fengraver.cc;fp=lily%2Fengraver.cc;h=12615eb8d6cbc780fc96a8e95cdee2fab6984bc8;hb=941dff9d2a67080e0dd8474f1e70f0c72ace6424;hp=7724b1c395a5c68ec5b19398ce08b8bedf2d0cb4;hpb=5a22d6233a39d3164e1ca043244794c268be4ad0;p=lilypond.git

diff --git a/lily/engraver.cc b/lily/engraver.cc
index 7724b1c395..12615eb8d6 100644
--- a/lily/engraver.cc
+++ b/lily/engraver.cc
@@ -1,9 +1,20 @@
 /*
-  engraver.cc -- implement Engraver
+  This file is part of LilyPond, the GNU music typesetter.
 
-  Sourcefile of GNU LilyPond music type setter
+  Copyright (C) 1997--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
 
-  (c) 1997--2009 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/>.
 */
 
 #include "engraver.hh"
@@ -32,54 +43,43 @@ Engraver::announce_grob (Grob_info inf)
 void
 Engraver::announce_end_grob (Grob_info inf)
 {
+  inf.start_end_ = STOP;
   get_daddy_engraver ()->announce_grob (inf);
 }
 
-/*
-  CAUSE is the object (typically a Stream_event object)  that
-  was the reason for making E.
-*/
-void
-Engraver::announce_grob (Grob *e, SCM cause)
+Grob_info
+Engraver::make_grob_info(Grob *e, SCM cause)
 {
   /* TODO: Remove Music code when it's no longer needed */
   if (Music *m = unsmob_music (cause))
     {
       cause = m->to_event ()->unprotect ();
     }
-  if (unsmob_stream_event (cause) || unsmob_grob (cause))
+  if (e->get_property ("cause") == SCM_EOL
+      && (unsmob_stream_event (cause) || unsmob_grob (cause)))
     e->set_property ("cause", cause);
 
-  Grob_info i (this, e);
-
-  Engraver_group *g = get_daddy_engraver ();
-  if (g)
-    g->announce_grob (i);
+  return Grob_info (this, e);
 }
 
-
 /*
-  CAUSE is the object (typically a Music object)  that
+  CAUSE is the object (typically a Stream_event object)  that
   was the reason for making E.
 */
 void
-Engraver::announce_end_grob (Grob *e, SCM cause)
+Engraver::announce_grob (Grob *e, SCM cause)
 {
-  /* TODO: Remove Music code when it's no longer needed */
-  if (Music *m = unsmob_music (cause))
-    {
-      cause = m->to_event ()->unprotect ();
-    }
-  if (e->get_property ("cause") == SCM_EOL
-      && (unsmob_stream_event (cause) || unsmob_grob (cause)))
-    e->set_property ("cause", cause);
+  announce_grob (make_grob_info (e, cause));
+}
 
-  Grob_info i (this, e);
 
-  i.start_end_ = STOP;
-  Engraver_group *g = get_daddy_engraver ();
-  if (g)
-    g->announce_grob (i);
+/*
+  CAUSE is the object (typically a grob or stream-event object) that
+  was the reason for ending E.  */
+void
+Engraver::announce_end_grob (Grob *e, SCM cause)
+{
+  announce_end_grob (make_grob_info (e, cause));
 }
 
 
@@ -164,13 +164,26 @@ Engraver::internal_make_column (SCM x, char const *name,
 }
 
 Spanner *
-Engraver::internal_make_spanner (SCM x, SCM cause, char const *name, char const *file, int line, char const *fun)
+Engraver::internal_make_spanner (SCM x, SCM cause, char const *name,
+				 char const *file, int line, char const *fun)
 {
   Spanner *sp = dynamic_cast<Spanner *> (internal_make_grob (x, cause, name, file, line, fun));
   assert (sp);
   return sp;
 }
 
+Engraver*
+unsmob_engraver (SCM eng)
+{
+  return dynamic_cast<Engraver*> (unsmob_translator (eng));
+}
+
+bool
+ly_is_grob_cause (SCM obj)
+{
+  return unsmob_grob (obj) || unsmob_stream_event (obj) || (obj == SCM_EOL);
+}
+
 #include "translator.icc"
 
 ADD_TRANSLATOR (Engraver,
@@ -187,3 +200,4 @@ ADD_TRANSLATOR (Engraver,
 		""
 		);
 
+