lily/request-chord-iterator.cc

   1 /*
   2   request-chord-iterator.cc -- implement Request_chord_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "translator-group.hh"
  10 #include "debug.hh"
  11 #include "request-chord-iterator.hh"
  12 #include "music-list.hh"
  13 #include "request.hh"
  14
  15 Request_chord_iterator::Request_chord_iterator ()
  16 {
  17 }
  18
  19 Request_chord_iterator::Request_chord_iterator (Request_chord_iterator const &src)
  20   : Simple_music_iterator (src)
  21 {
  22 }
  23
  24 Translator_group*
  25 Request_chord_iterator::get_req_translator_l ()
  26 {
  27   assert (report_to_l ());
  28   if (report_to_l ()->is_bottom_translator_b ())
  29     return report_to_l ();
  30
  31   set_translator (report_to_l ()->get_default_interpreter ());
  32   return report_to_l ();
  33 }
  34
  35 void
  36 Request_chord_iterator::construct_children ()
  37 {
  38   Simple_music_iterator::construct_children ();
  39   get_req_translator_l ();
  40 }
  41
  42 Request_chord*
  43 Request_chord_iterator::elt_l () const
  44 {
  45   return (Request_chord*) music_l ();
  46 }
  47
  48 SCM
  49 Request_chord_iterator::get_music (Moment) const
  50 {
  51   SCM s = SCM_EOL;
  52   if (last_processed_mom_ < Moment (0))
  53     {
  54       Music_sequence * ms = dynamic_cast<Music_sequence*> (music_l ());
  55
  56       for (SCM m = ms->music_list (); gh_pair_p (m); m = gh_cdr (m))
  57         {
  58           s = gh_cons (gh_car (m) , s);
  59         }
  60     }
  61   return s;
  62 }
  63
  64 void
  65 Request_chord_iterator::process (Moment m)
  66 {
  67   if (last_processed_mom_ < Moment (0))
  68     {
  69       for (SCM s = dynamic_cast<Music_sequence *> (music_l ())->music_list ();
  70            gh_pair_p (s);  s = gh_cdr (s))
  71         {
  72           Music *mus = unsmob_music (gh_car (s));
  73
  74           bool gotcha = try_music (mus);
  75           if (!gotcha)
  76             mus->origin ()->warning (_f ("Junking request: `%s'", classname (mus)));
  77         }
  78     }
  79   skip (m);
  80 }
  81
  82 IMPLEMENT_CTOR_CALLBACK (Request_chord_iterator);