new file

[lilypond.git] / lily / performer-group-performer.cc

diff --git a/lily/performer-group-performer.cc b/lily/performer-group-performer.cc
index 55776074c00c61d4e60ce672ed57b8e10db26961..053a5f32fce04e61dc2fabdeff25d6e3e6ded9fa 100644 (file)
--- a/lily/performer-group-performer.cc
+++ b/lily/performer-group-performer.cc
@@ -3,59 +3,47 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1996--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-               Jan Nieuwenhuizen <janneke@gnu.org>
- */
+  (c) 1996--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  Jan Nieuwenhuizen <janneke@gnu.org>
+*/
 
 #include "performer-group-performer.hh"
 
+#include "context.hh"
 #include "audio-element.hh"
 #include "warn.hh"
 
-
-ENTER_DESCRIPTION(Performer_group_performer,
-/* descr */       "",
-/* creats*/       "",
-/* accepts */     "",
-/* acks  */      "",
-/* reads */       "",
-/* write */       "");
-
-
+ADD_TRANSLATOR (Performer_group_performer,
+               /* descr */ "",
+               /* creats*/ "",
+               /* accepts */ "",
+               /* acks  */ "",
+               /* reads */ "",
+               /* write */ "");
 
 void
 Performer_group_performer::announce_element (Audio_element_info info)
 {
   announce_infos_.push (info);
-  Performer::announce_element (info);
-}
-
-
+  Translator *t
+    = context ()->get_parent_context ()->implementation ();
 
-void
-Performer_group_performer::create_audio_elements ()
-{
-  for (SCM p = get_simple_trans_list (); gh_pair_p (p); p = ly_cdr (p))
-    {
-      Translator * t = unsmob_translator (ly_car (p));
-      Performer * eng = dynamic_cast<Performer*> (t);
-      if (eng)
-       eng->create_audio_elements ();
-    }
+  if (Performer_group_performer *eg = dynamic_cast<Performer_group_performer *> (t))
+    eg->announce_element (info);
 }
 
 void
 Performer_group_performer::acknowledge_audio_elements ()
 {
-  for (int j =0; j < announce_infos_.size (); j++)
+  for (int j = 0; j < announce_infos_.size (); j++)
     {
       Audio_element_info info = announce_infos_[j];
 
-      for (SCM p = get_simple_trans_list (); gh_pair_p (p); p = ly_cdr (p))
+      for (SCM p = get_simple_trans_list (); scm_is_pair (p); p = scm_cdr (p))
        {
-         Translator * t = unsmob_translator (ly_car (p));
-         Performer * eng = dynamic_cast<Performer*> (t);
-         if (eng && eng!= info.origin_trans_)
+         Translator *t = unsmob_translator (scm_car (p));
+         Performer *eng = dynamic_cast<Performer *> (t);
+         if (eng && eng != info.origin_trans_)
            eng->acknowledge_audio_element (info);
        }
     }
@@ -64,57 +52,31 @@ Performer_group_performer::acknowledge_audio_elements ()
 void
 Performer_group_performer::do_announces ()
 {
-  for (SCM p = trans_group_list_; gh_pair_p (p); p =ly_cdr (p))
-    {
-      Translator * t = unsmob_translator (ly_car (p));
-      dynamic_cast<Performer_group_performer*> (t)->do_announces ();
-    }
-
-  
-  create_audio_elements ();
-    
-  while (announce_infos_.size ())
+  while (1)
     {
-      acknowledge_audio_elements ();
-      announce_infos_.clear ();
       create_audio_elements ();
-    }
+      performer_each (get_simple_trans_list (),
+                     &Performer::create_audio_elements);
 
-  if (announce_infos_.size ())
-    {
-#if 0  //printf?  -> include <stdio.h>     
-      printf ("do_announces: elt: %s\n",
-             classname (announce_infos_[0].elem_));
-#endif      
+      if (!announce_infos_.size ())
+       break;
+
+      acknowledge_audio_elements ();
       announce_infos_.clear ();
     }
 }
 
-Performer_group_performer::Performer_group_performer()
+Performer_group_performer::Performer_group_performer ()
 {
 }
 
-/*
-  C & P from Engraver.
-
-  Should move into Translator ? 
- */
 void
-Performer_group_performer::process_music ()
+performer_each (SCM list, Performer_method method)
 {
-   for (SCM p = get_simple_trans_list (); gh_pair_p (p); p =ly_cdr (p))
-    {
-      Translator * t = unsmob_translator (ly_car (p));
-      Performer * eng = dynamic_cast<Performer*> (t);
-
-      if (eng)
-       eng->process_music ();
-    }
-   for (SCM p = trans_group_list_; gh_pair_p (p); p =ly_cdr (p))
+  for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
     {
-      Translator * t = unsmob_translator (ly_car (p));
-      Performer*eng = dynamic_cast<Performer*> (t);
-      if (eng)
-       eng->process_music ();
+      Performer *e = dynamic_cast<Performer *> (unsmob_translator (scm_car (p)));
+      if (e)
+       (e->*method) ();
     }
 }