lily/repeated-music-iterator.cc

   1 /*
   2   repeated-music-iterator.cc --  implement Repeated_music_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998 Jan Nieuwenhuizen <janneke@gnu.org>
   7
   8  */
   9
  10 #include "repeated-music-iterator.hh"
  11 #include "repeated-music.hh"
  12 #include "musical-request.hh"
  13 #include "translator-group.hh"
  14 #include "command-request.hh"
  15
  16 Repeated_music_iterator::Repeated_music_iterator ()
  17 {
  18   repeat_iter_p_ = 0;
  19   alternative_iter_p_ = 0;
  20 }
  21
  22 Repeated_music_iterator::~Repeated_music_iterator ()
  23 {
  24   delete repeat_iter_p_;
  25   delete alternative_iter_p_;
  26 }
  27
  28 void
  29 Repeated_music_iterator::do_print () const
  30 {
  31   if (repeat_iter_p_) repeat_iter_p_->print ();
  32   if (alternative_iter_p_) alternative_iter_p_->print ();
  33 }
  34
  35 void
  36 Repeated_music_iterator::construct_children ()
  37 {
  38   repeat_iter_p_ = get_iterator_p (repeated_music_l ()->repeat_p_);
  39 }
  40
  41 void
  42 Repeated_music_iterator::do_process_and_next (Moment m)
  43 {
  44   if (first_b_)
  45     {
  46       bool success = report_to_l ()->try_music (repeated_music_l ());
  47       if (!success)
  48         music_l_->warning ( _("No one to print a volta bracket"));
  49     }
  50   if (repeat_iter_p_->ok ())
  51     repeat_iter_p_->process_and_next (m);
  52   else
  53     {
  54       if (!alternative_iter_p_)
  55         {
  56           delete repeat_iter_p_;
  57           repeat_iter_p_ = 0;
  58           alternative_iter_p_ = dynamic_cast<Sequential_music_iterator*>
  59             (get_iterator_p (repeated_music_l ()->alternative_p_));
  60         }
  61       alternative_iter_p_->process_and_next (m);
  62     }
  63   Music_iterator::do_process_and_next (m);
  64 }
  65
  66 Moment
  67 Repeated_music_iterator::next_moment () const
  68 {
  69   if (repeat_iter_p_)
  70     return repeat_iter_p_->next_moment ();
  71   else if (alternative_iter_p_)
  72     return alternative_iter_p_->next_moment ();
  73   return 0;
  74 }
  75
  76 bool
  77 Repeated_music_iterator::ok () const
  78 {
  79   if (repeat_iter_p_)
  80     return repeat_iter_p_->ok ();
  81   else if (alternative_iter_p_)
  82     return alternative_iter_p_->ok ();
  83   return false;
  84 }
  85
  86 Repeated_music*
  87 Repeated_music_iterator::repeated_music_l () const
  88 {
  89   return (Repeated_music*)Music_iterator::music_l_;
  90 }
  91