release: 1.3.8

[lilypond.git] / lily / sequential-music-iterator.cc

diff --git a/lily/sequential-music-iterator.cc b/lily/sequential-music-iterator.cc
index b1a9ab61987cba7f4b72ee9b1a61f0f2a5f54277..58e04051752d014ef79de72abae9c580a06c91d6 100644 (file)
--- a/lily/sequential-music-iterator.cc
+++ b/lily/sequential-music-iterator.cc
@@ -5,11 +5,13 @@
 
   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
-
+#include "grace-iterator.hh"
 #include "translator-group.hh"
 #include "debug.hh"
 #include "sequential-music-iterator.hh"
 #include "music-list.hh"
+#include "request-chord-iterator.hh"
+
 
 void
 Sequential_music_iterator::do_print() const
@@ -28,7 +30,7 @@ Sequential_music_iterator::Sequential_music_iterator ()
 void
 Sequential_music_iterator::construct_children()
 {
-  cursor_ = dynamic_cast<Sequential_music const*> (music_l_)->music_p_list_p_->head_;
+  cursor_ = dynamic_cast<Music_sequence const*> (music_l_)->music_p_list_p_->head_;
   
   while (cursor_)
     {
@@ -39,7 +41,7 @@ Sequential_music_iterator::construct_children()
        }
       else 
        {
-         set_Sequential_music_translator();
+         set_sequential_music_translator();
          break;
        }
     }
@@ -63,15 +65,25 @@ Sequential_music_iterator::start_next_element()
 }
 
 void
-Sequential_music_iterator::set_Sequential_music_translator()
+Sequential_music_iterator::set_sequential_music_translator()
 {
-  if (iter_p_->report_to_l()->depth_i () > report_to_l ()->depth_i ())
-    set_translator (iter_p_->report_to_l());
+  Translator_group  * child_report = child_report = iter_p_->report_to_l ();
+  if (dynamic_cast<Grace_iterator*> (iter_p_))
+    child_report = child_report->daddy_trans_l_;
+    
+  if (report_to_l()->depth_i () < child_report->depth_i ())
+    set_translator (child_report);
 }
 
 Sequential_music_iterator::~Sequential_music_iterator()
 {
-  assert (! iter_p_);
+  if (iter_p_)
+    {
+      if (iter_p_->ok ())
+       music_l_->warning (_ ("Must stop before this music ends"));
+      delete iter_p_;
+      iter_p_ = 0;
+    }
 }
 
 
@@ -80,6 +92,9 @@ Sequential_music_iterator::~Sequential_music_iterator()
 void
 Sequential_music_iterator::do_process_and_next (Moment until)
 {
+  if (!iter_p_)
+    return;
+
   while (1) 
     {
       Moment local_until = until - here_mom_;
@@ -91,20 +106,16 @@ Sequential_music_iterator::do_process_and_next (Moment until)
            
          iter_p_->process_and_next (local_until);
        }
-
+      
       if (!iter_p_->ok()) 
        {
+         set_sequential_music_translator();
          leave_element();
          
          if (cursor_)
-           {
-             start_next_element();
-             set_Sequential_music_translator();
-           }
+           start_next_element();
          else 
-           {
-             goto loopexit;
-           }
+           goto loopexit;
        }
     }
 
@@ -119,9 +130,15 @@ Sequential_music_iterator::next_moment() const
   return iter_p_->next_moment() + here_mom_;
 }
 
+
 bool
 Sequential_music_iterator::ok() const
 {
   return iter_p_;
 }
 
+Music_iterator*
+Sequential_music_iterator::try_music_in_children (Music const *m) const
+{ 
+  return iter_p_ ? iter_p_->try_music (m) : 0;
+}