Fix some bugs in the dynamic engraver and PostScript backend

[lilypond.git] / lily / folded-repeat-iterator.cc

diff --git a/lily/folded-repeat-iterator.cc b/lily/folded-repeat-iterator.cc
index 18cfe09204d44fdd842efaea557dbd81ddfe5499..1a4de7c369b828618110634bad5797cd73f7acba 100644 (file)
--- a/lily/folded-repeat-iterator.cc
+++ b/lily/folded-repeat-iterator.cc
@@ -1,69 +1,54 @@
-/*   
-  repeated-music-iterator.cc --  implement Folded_repeat_iterator
-  
-  source file of the GNU LilyPond music typesetter
-  
-  (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
+/*
+  folded-repeat-iterator.cc -- implement Folded_repeat_iterator
 
+  source file of the GNU LilyPond music typesetter
 
-/*
-   Folded repeats are a stupid idea at this point, so we refrain from
-   implementing get_music () and skip ().
+  (c) 1999--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "folded-repeat-iterator.hh"
+
+#include "context.hh"
+#include "input.hh"
+#include "international.hh"
 #include "repeated-music.hh"
-#include "music-list.hh"
 #include "simultaneous-music-iterator.hh"
-#include "translator-group.hh"
 
 Folded_repeat_iterator::Folded_repeat_iterator ()
 {
-  main_iter_p_ = 0;
-  alternative_iter_p_ = 0;
+  main_iter_ = 0;
+  alternative_iter_ = 0;
 }
 
 bool
 Folded_repeat_iterator::ok () const
 {
-  return main_iter_p_ || alternative_iter_p_;
-}
-
-Folded_repeat_iterator::~Folded_repeat_iterator ()
-{
-  delete main_iter_p_;
-  delete alternative_iter_p_;
+  return main_iter_ || alternative_iter_;
 }
-
-Folded_repeat_iterator::Folded_repeat_iterator (Folded_repeat_iterator const &src)
-  : Music_iterator (src)
+void
+Folded_repeat_iterator::do_quit ()
 {
-  main_iter_p_ = src.main_iter_p_ ? src.main_iter_p_->clone () : 0;
-  alternative_iter_p_ = src.alternative_iter_p_ ? src.alternative_iter_p_->clone () : 0;
-  main_length_mom_ = src.main_length_mom_;
+  if (main_iter_)main_iter_->quit ();
+  if (alternative_iter_)alternative_iter_->quit ();
 }
 
 Moment
 Folded_repeat_iterator::pending_moment () const
 {
-  if (main_iter_p_)
-    {
-      return main_iter_p_->pending_moment ();
-    }
+  if (main_iter_)
+    return main_iter_->pending_moment ();
   else
-    return main_length_mom_ + alternative_iter_p_->pending_moment ();
+    return main_length_mom_ + alternative_iter_->pending_moment ();
 }
 
 void
 Folded_repeat_iterator::construct_children ()
 {
-  Repeated_music  *  mus = dynamic_cast<Repeated_music*> (music_l ());
-  main_iter_p_ = get_iterator_p (mus->body ());
-  if (!main_iter_p_->ok ())
+  Music *mus = get_music ();
+  main_iter_ = unsmob_iterator (get_iterator (Repeated_music::body (mus)));
+  if (!main_iter_->ok ())
     {
-     leave_body ();
+      leave_body ();
       enter_alternative ();
     }
 }
@@ -71,32 +56,23 @@ Folded_repeat_iterator::construct_children ()
 void
 Folded_repeat_iterator::process (Moment m)
 {
-  if (!m.to_bool () )
-    {
-      bool success = try_music (music_l ());
-      if (!success)
-       music_l ()->origin ()->warning (_ ("no one to print a repeat brace"));
-    }
-  
-  if (main_iter_p_)
+  if (main_iter_)
     {
-      main_iter_p_->process (m);
-      if (!main_iter_p_->ok ())
+      main_iter_->process (m);
+      if (!main_iter_->ok ())
        leave_body ();
     }
 
-  if (!main_iter_p_ && !alternative_iter_p_)
-    {
-      enter_alternative ();
-    }
-  
-  if (alternative_iter_p_)
+  if (!main_iter_ && !alternative_iter_)
+    enter_alternative ();
+
+  if (alternative_iter_)
     {
-      alternative_iter_p_->process (m - main_length_mom_);
-      if (!alternative_iter_p_->ok ())
+      alternative_iter_->process (m - main_length_mom_);
+      if (!alternative_iter_->ok ())
        {
-         delete alternative_iter_p_;
-         alternative_iter_p_ =0;
+         alternative_iter_->quit ();
+         alternative_iter_ = 0;
        }
     }
 }
@@ -104,38 +80,49 @@ Folded_repeat_iterator::process (Moment m)
 void
 Folded_repeat_iterator::leave_body ()
 {
-  Repeated_music *  mus = dynamic_cast<Repeated_music *> (music_l ());
-  delete main_iter_p_;
-  main_iter_p_ = 0;
-  main_length_mom_ +=  mus->body ()->length_mom ();
+  Music *mus = get_music ();
+
+  main_iter_->quit ();
+  main_iter_ = 0;
+  main_length_mom_ += Repeated_music::body (mus)->get_length ();
 }
 
 void
 Folded_repeat_iterator::enter_alternative ()
 {
-  Repeated_music *  mus = dynamic_cast<Repeated_music *> (music_l ());  
-  if (mus->alternatives ())
+  Music *mus = get_music ();
+  if (scm_is_pair (Repeated_music::alternatives (mus)))
     {
-      Simultaneous_music_iterator * s = new Simultaneous_music_iterator;
-      s->separate_contexts_b_ = true;
-      s->init_translator (mus->alternatives (), report_to_l ());
-  
-      alternative_iter_p_ = s;
-      alternative_iter_p_->construct_children ();
+      /*
+       ugh.
+      */
+      Simultaneous_music_iterator *s = new Simultaneous_music_iterator;
+      s->create_separate_contexts_ = true;
+      s->init_translator (mus, get_outlet ());
+
+      alternative_iter_ = s;
+      alternative_iter_->construct_children ();
+
+      s->unprotect ();
     }
 }
 
+void
+Folded_repeat_iterator::derived_mark () const
+{
+  if (main_iter_)
+    scm_gc_mark (main_iter_->self_scm ());
+  if (alternative_iter_)
+    scm_gc_mark (alternative_iter_->self_scm ());
+}
 
-Music_iterator*
-Folded_repeat_iterator::try_music_in_children (Music * m) const
+void
+Folded_repeat_iterator::derived_substitute (Context *f, Context *t)
 {
-  if (main_iter_p_)
-    {
-      return main_iter_p_->try_music (m);
-    }
-  if (alternative_iter_p_)
-    return alternative_iter_p_->try_music (m);
-  return 0;
+  if (main_iter_)
+    main_iter_->substitute_outlet (f, t);
+  if (alternative_iter_)
+    alternative_iter_->substitute_outlet (f, t);
 }
 
 IMPLEMENT_CTOR_CALLBACK (Folded_repeat_iterator);