lily/event-chord-iterator.cc

   1 /*
   2   event-chord-iterator.cc -- implement Event_chord_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "translator-group.hh"
  10 #include "warn.hh"
  11 #include "event-chord-iterator.hh"
  12 #include "music-list.hh"
  13 #include "event.hh"
  14
  15 Event_chord_iterator::Event_chord_iterator ()
  16 {
  17 }
  18
  19 Event_chord_iterator::Event_chord_iterator (Event_chord_iterator const &src)
  20   : Simple_music_iterator (src)
  21 {
  22 }
  23
  24 Translator_group*
  25 Event_chord_iterator::get_req_translator ()
  26 {
  27   assert (report_to ());
  28   if (report_to ()->is_bottom_translator_b ())
  29     return report_to ();
  30
  31   set_translator (report_to ()->get_default_interpreter ());
  32   return report_to ();
  33 }
  34
  35 void
  36 Event_chord_iterator::construct_children ()
  37 {
  38   Simple_music_iterator::construct_children ();
  39   get_req_translator ();
  40 }
  41
  42 Event_chord*
  43 Event_chord_iterator::get_elt () const
  44 {
  45   return (Event_chord*) get_music ();
  46 }
  47
  48 SCM
  49 Event_chord_iterator::get_pending_events (Moment) const
  50 {
  51   SCM s = SCM_EOL;
  52   if (last_processed_mom_ < Moment (0))
  53     {
  54       Music_sequence * ms = dynamic_cast<Music_sequence*> (get_music ());
  55
  56       for (SCM m = ms->music_list (); gh_pair_p (m); m = ly_cdr (m))
  57         {
  58           s = gh_cons (ly_car (m) , s);
  59         }
  60     }
  61   return s;
  62 }
  63
  64 void
  65 Event_chord_iterator::process (Moment m)
  66 {
  67   if (last_processed_mom_ < Moment (0))
  68     {
  69       for (SCM s = dynamic_cast<Music_sequence *> (get_music ())->music_list ();
  70            gh_pair_p (s);  s = ly_cdr (s))
  71         {
  72           Music *mus = unsmob_music (ly_car (s));
  73
  74           bool gotcha = try_music (mus);
  75           if (!gotcha)
  76             mus->origin ()->warning (_f ("Junking event: `%s'", mus->name()));
  77         }
  78     }
  79   skip (m);
  80 }
  81
  82 IMPLEMENT_CTOR_CALLBACK (Event_chord_iterator);