patch::: 1.5.1.jcn2

[lilypond.git] / lily / music-sequence.cc

diff --git a/lily/music-sequence.cc b/lily/music-sequence.cc
index 8d8299a510df7309b7643522e5f8409aa3f99e61..47927f6cb90244c8851144d09f79e1454573b28c 100644 (file)
--- a/lily/music-sequence.cc
+++ b/lily/music-sequence.cc
@@ -3,45 +3,179 @@
   
   source file of the GNU LilyPond music typesetter
   
-  (c) 1998 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   
  */
 #include "music-list.hh"
 #include "debug.hh"
-#include "musical-pitch.hh"
+#include "pitch.hh"
 
-Music_sequence::Music_sequence (Music_sequence const&s)
-  : Music (s)
+
+void
+Music_sequence::truncate (int k)
 {
-  music_p_list_p_ = new Music_list (*s.music_p_list_p_);
-}
+  SCM l = get_mus_property ("elements");
+  if (k == 0)
+    {
+      l = SCM_EOL;
+    }
+  else
+    {
+      SCM s = l;
+      k--;
+      for (; gh_pair_p (s) && k--; s = gh_cdr (s))
+       ;
 
-IMPLEMENT_IS_TYPE_B1(Music_sequence, Music);
+      if (gh_pair_p (s))
+       {
+         gh_set_cdr_x (s, SCM_EOL);
+       }
+    }
+  set_mus_property ("elements", l);
+}
 
-Music_sequence::Music_sequence(Music_list *mlist_p)
+SCM
+Music_sequence::music_list ()const
 {
-  music_p_list_p_ = mlist_p;
+  return get_mus_property ("elements");
 }
 
+/*
+  Ugh this sucks. Linear. do not use.
+ */
 void
-Music_sequence::transpose (Musical_pitch rq)
+Music_sequence::append_music (Music *m)
+{
+  set_mus_property ("elements",
+                   gh_append2 (music_list (), gh_cons (m->self_scm (), SCM_EOL)));
+  scm_gc_unprotect_object (m->self_scm ());
+}
+
+Music_sequence::Music_sequence (SCM l)
+  : Music (l)
 {
-  for (iter (music_p_list_p_->top(),i); i.ok (); i++)
-    i->transpose (rq);    
 }
 
 void
-Music_sequence::do_print() const
+Music_sequence::transpose (Pitch rq)
+{
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    unsmob_music (gh_car (s))->transpose (rq);    
+}
+
+
+
+
+Moment
+Music_sequence::cumulative_length () const
+{
+  Moment cumulative;
+  
+  Moment last_len ; 
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    {
+      Moment l = unsmob_music (gh_car (s))->length_mom ();
+      if (last_len.grace_mom_ && l.main_part_)
+       {
+         last_len.grace_mom_ = Rational (0);
+       }
+      cumulative += last_len;
+      last_len = l;
+    }
+
+  last_len.grace_mom_ = Rational (0);
+  cumulative += last_len;
+  
+  return  cumulative;
+}
+
+Pitch
+Music_sequence::to_relative_octave (Pitch p)
 {
-#ifndef NPRINT
-  for (iter (music_p_list_p_->top(),i); i.ok (); i++)
-    i->print();
-#endif 
+  return do_relative_octave (p, false);
 }
 
 
+Moment
+Music_sequence::maximum_length () const
+{
+  Moment dur = 0;
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    dur = dur >? unsmob_music (gh_car (s))->length_mom ();
+
+  return dur;
+}
+int
+Music_sequence::length_i () const
+{
+  return scm_ilength (music_list ());
+}
+
+Pitch
+Music_sequence::do_relative_octave (Pitch p, bool ret_first)
+{
+  Pitch retval;
+  int count=0;
+
+  Pitch last = p;
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    {
+      last = unsmob_music (gh_car (s))->to_relative_octave (last);
+      if (!count ++)
+       retval = last;
+    }
+
+  if (!ret_first)
+    retval = last;
+  
+  return retval;
+}
+
 void
-Music_sequence::add_music (Music *m_p)
+Music_sequence::compress (Moment m)
 {
-  music_p_list_p_->add_music (m_p);
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    unsmob_music (gh_car (s))->compress (m);
 }
+
+ADD_MUSIC (Music_sequence);
+
+Music_sequence::Music_sequence ()
+  : Music (SCM_EOL)
+{
+  
+}
+
+Moment
+Music_sequence::minimum_start () const
+{
+  Moment m;
+  
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    {
+      m = m <? unsmob_music (gh_car (s))->start_mom ();
+    }
+  return m;
+}
+
+Moment
+Music_sequence::first_start () const
+{
+  Moment m;
+  
+  for (SCM s = music_list (); gh_pair_p (s);  s = gh_cdr (s))
+    {
+      Music * mus = unsmob_music (gh_car (s));
+      Moment l = mus->length_mom ();
+
+      if (l.main_part_)
+       return mus->start_mom ();
+      else if (l.grace_mom_)
+       {
+         m.grace_mom_ = - l.grace_mom_; 
+         return m;
+       }
+    }
+  return m;
+}
+