]> git.donarmstrong.com Git - lilypond.git/blobdiff - lily/music-iterator.cc
catch GUILE errors
[lilypond.git] / lily / music-iterator.cc
index 1ad45da5238e29a404f5cb51923948a5069098cd..dcb596a117071a3d8fe78610b3c8992e0635a25c 100644 (file)
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 /*
   UGH. too many includes.
  */
-#include "debug.hh"
-#include "music-list.hh"
+#include "warn.hh"
 #include "music-iterator.hh"
-#include "property-iterator.hh"
-#include "request-chord-iterator.hh"
-#include "sequential-music-iterator.hh"
-#include "simultaneous-music-iterator.hh"
 #include "translator-group.hh"
-#include "translation-property.hh"
-#include "change-iterator.hh"
-#include "change-translator.hh"
 #include "music-wrapper.hh"
 #include "music-wrapper-iterator.hh"
-#include "time-scaled-music-iterator.hh"
-#include "time-scaled-music.hh"
+#include "simple-music-iterator.hh"
 #include "context-specced-music.hh"
-#include "repeated-music.hh"
-#include "folded-repeat-iterator.hh"
-#include "unfolded-repeat-iterator.hh"
-#include "grace-iterator.hh"
-#include "grace-music.hh"
-#include "lyric-combine-music.hh"
-#include "lyric-combine-music-iterator.hh"
-#include "auto-change-music.hh"
-#include "auto-change-iterator.hh"
-#include "request.hh"
-#include "request-iterator.hh"
-#include "output-property.hh"
-#include "chord-tremolo-iterator.hh"
 
-void
-Music_iterator::do_print() const
+Music_iterator::Music_iterator ()
 {
 }
 
-void
-Music_iterator::print() const
-{
-#ifndef NPRINT
-  if (!flower_dstream)
-    return ;
-  DEBUG_OUT << classname(this) << "{";
-  Translator_group *t =     report_to_l();
-  DEBUG_OUT << "report to " << t->type_str_ << " = " << t->id_str_ << "\n";
-  if (ok())
-    DEBUG_OUT << "next at " << next_moment() << " ";
-  else
-    DEBUG_OUT << "not feeling well today..";
-  do_print();
-  DEBUG_OUT << "}\n";
-#endif
+Music_iterator::Music_iterator (Music_iterator const& src)
+{
+  handle_ = *src.handle_.clone ();
+  music_ = src.music_;
+  music_length_ = src.music_length_;
+  start_mom_ = src.start_mom_;
 }
 
-Translator_group*
-Music_iterator::get_req_translator_l()
+Music_iterator::~Music_iterator ()
 {
-  assert (report_to_l());
-  if (report_to_l()->is_bottom_translator_b ())
-    return report_to_l();
-
-  set_translator (report_to_l()->get_default_interpreter ());
-  return report_to_l();
 }
 
 
+
+
 Translator_group* 
-Music_iterator::report_to_l() const
+Music_iterator::report_to () const
 {
-  return handle_.report_to_l ();
+  return handle_.report_to ();
 }
 
 
 void
-Music_iterator::set_translator (Translator_group*trans)
+Music_iterator::set_translator (Translator_group *trans)
 {
   handle_.set_translator (trans);
 }
 
 void
-Music_iterator::construct_children()
-{
-}
-
-Music_iterator::~Music_iterator()
+Music_iterator::construct_children ()
 {
 }
 
 Moment
-Music_iterator::next_moment() const
+Music_iterator::pending_moment () const
 {
   return 0;
 }
 
-
 void
-Music_iterator::process_and_next (Moment m)
+Music_iterator::process (Moment)
+{
+}
+
+bool
+Music_iterator::ok () const
 {
-  do_process_and_next (m);
+  return false;
 }
 
 void
-Music_iterator::do_process_and_next (Moment)
+Music_iterator::skip (Moment)
 {
-  first_b_ = false;
 }
 
-bool
-Music_iterator::ok() const
+SCM
+Music_iterator::get_pending_events (Moment)const
 {
-  return first_b_;
+  return SCM_EOL;
 }
 
 Music_iterator*
-Music_iterator::static_get_iterator_p (Music const *m)
+Music_iterator::get_static_get_iterator (Music *m)
 {
   Music_iterator * p =0;
 
-  /* It would be nice to do this decentrally, but the order of this is
-     significant.  */
-  if (dynamic_cast<Request_chord  const *> (m))
-    p = new Request_chord_iterator;
-  else if (dynamic_cast<Lyric_combine_music const*> (m))
-    p = new Lyric_combine_music_iterator;
-  else if (dynamic_cast<Simultaneous_music  const *> (m)) 
-    p =  new Simultaneous_music_iterator;
-  else if (dynamic_cast<Sequential_music  const *> (m)) 
-    p =  new Sequential_music_iterator;
-  else if (dynamic_cast<Translation_property  const *> (m))
-    p = new Property_iterator;
-  else if (dynamic_cast<Change_translator  const *> (m))
-    p = new Change_iterator;
-  else if (dynamic_cast<Time_scaled_music  const *> (m))
-    p = new Time_scaled_music_iterator;
-  else if (dynamic_cast<Grace_music const*> (m))
-    p = new Grace_iterator;
-  else if (dynamic_cast<Auto_change_music const*> (m))
-    p = new Auto_change_iterator;
-  else if (dynamic_cast<Music_wrapper  const *> (m))
-    p = new Music_wrapper_iterator;
-  else if (Repeated_music const * n = dynamic_cast<Repeated_music const *> (m))
+  SCM ctor = m->get_mus_property ("iterator-ctor") ;
+  if (unsmob_cxx_function (ctor))
     {
-      if (n->type_ == "tremolo")
-       p = new Chord_tremolo_iterator;
-      else if (n->fold_b_)
-       p = new Folded_repeat_iterator;
-      else
-       p = new Unfolded_repeat_iterator;
+      Cxx_function f =  unsmob_cxx_function (ctor);
+      
+      p = (Music_iterator*) (*f) (SCM_EOL);
     }
+  else if (dynamic_cast<Music_wrapper   *> (m))
+    p = new Music_wrapper_iterator;
   else
     {
       p = new Simple_music_iterator ;
     }
 
-  p->music_l_ = m;
+  p->music_ = m;
+  assert (m);
+  p->music_length_ = m->length_mom ();
+  p->start_mom_ = m->start_mom ();
   return p;
 }
 
+
+Moment
+Music_iterator::music_length_mom () const
+{
+  return music_length_;
+
+}
+
+Moment
+Music_iterator::music_start_mom ()const
+{
+  return start_mom_;
+}
+
 void
-Music_iterator::init_translator (Music const *m, Translator_group  *report_l)
+Music_iterator::init_translator (Music *m, Translator_group *report)
 {
-  music_l_ = m;
-  if (Context_specced_music const * csm =dynamic_cast<Context_specced_music const*>(m))
+  music_ = m;
+  assert (m);
+  if (Context_specced_music * csm =dynamic_cast<Context_specced_music *> (m))
     {
-      Translator_group* a =report_l->
-       find_create_translator_l (csm->translator_type_str_, csm->translator_id_str_);
+      SCM ct = csm->get_mus_property ("context-type");
+      String c_type;
+      if (gh_string_p (ct))
+         c_type =  ly_scm2string (ct);
+      
+      String c_id;
+      SCM ci = csm->get_mus_property ("context-id");
+      if (gh_string_p (ci))
+       c_id = ly_scm2string (ci);
+      
+      Translator_group* a
+       =report->find_create_translator (c_type, c_id);
 
       set_translator (a);
       
     }
 
-  if (! report_to_l())
-    set_translator (report_l);
+  if (! report_to ())
+    set_translator (report);
 }
 
 
 Music_iterator*
-Music_iterator::get_iterator_p (Music const*m) const
+Music_iterator::get_iterator (Music *m) const
 {
-  Music_iterator*p = static_get_iterator_p (m);
-  p->init_translator (m, report_to_l());
+  Music_iterator*p = get_static_get_iterator (m);
+  p->init_translator (m, report_to ());
   
-  p->construct_children();
+  p->construct_children ();
   return p;
 }
 
-Music_iterator::Music_iterator()
-{
-  first_b_ = true;
-}
+/*
+  TODO: rename to prevent confusion between Translator::try_music and
+  Iterator::try_music
+  
+ */
 
 Music_iterator*
-Music_iterator::try_music (Music const *m) const
+Music_iterator::try_music (Music *m) const
 {
-  bool b = report_to_l ()->try_music ((Music*)m); // ugh
+  bool b = report_to ()->try_music ((Music*)m); // ugh
   Music_iterator * it = b ? (Music_iterator*) this : 0;        // ugh
   if (!it)
     it = try_music_in_children (m);
@@ -210,8 +178,15 @@ Music_iterator::try_music (Music const *m) const
 }
 
 Music_iterator*
-Music_iterator::try_music_in_children (Music const *  ) const
+Music_iterator::try_music_in_children (Music *) const
 {
   return 0;
 }
 
+IMPLEMENT_CTOR_CALLBACK (Music_iterator);
+
+Music *
+Music_iterator::get_music () const
+{
+  return music_;
+}