lily/simultaneous-music-iterator.cc

   1 /*
   2   Simultaneous_music-iterator.cc -- implement Simultaneous_music_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7 */
   8
   9 #include "translator-group.hh"
  10 #include "debug.hh"
  11 #include "simultaneous-music-iterator.hh"
  12
  13 #include "music-list.hh"
  14
  15 Simultaneous_music_iterator::Simultaneous_music_iterator ()
  16 {
  17 }
  18
  19 Simultaneous_music_iterator::~Simultaneous_music_iterator ()
  20 {
  21 }
  22
  23 void
  24 Simultaneous_music_iterator::construct_children()
  25 {
  26   int j = 0;
  27   Simultaneous_music const *sim = dynamic_cast<Simultaneous_music const*> (music_l_);
  28   for (PCursor<Music*> i (sim->music_p_list_p_->top());
  29        i.ok(); j++, i++)
  30     {
  31       Music_iterator * mi = get_iterator_p (i.ptr());
  32       if (mi->ok())
  33         {
  34           if  (sim->translator_type_str_.empty_b ())
  35             set_translator (mi->report_to_l()->ancestor_l (0)); // huh?
  36           children_p_list_.bottom().add (mi);
  37         }
  38       else
  39         delete mi;
  40     }
  41 }
  42
  43
  44 void
  45 Simultaneous_music_iterator::do_print() const
  46 {
  47 #ifndef NPRINT
  48   for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
  49     {
  50       i->print();
  51     }
  52 #endif
  53 }
  54
  55 void
  56 Simultaneous_music_iterator::do_process_and_next (Moment until)
  57 {
  58   for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok ();)
  59     {
  60       if  (i->next_moment() == until)
  61         {
  62           i->process_and_next (until);
  63         }
  64       if (!i->ok())
  65         delete i.remove_p();
  66       else
  67         i++;
  68     }
  69   Music_iterator::do_process_and_next (until);
  70 }
  71
  72
  73
  74
  75 Moment
  76 Simultaneous_music_iterator::next_moment() const
  77 {
  78   Moment next;
  79   next.set_infinite (1);
  80   for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
  81     next = next <? i->next_moment() ;
  82   return next;
  83 }
  84
  85
  86
  87 bool
  88 Simultaneous_music_iterator::ok() const
  89 {
  90   return children_p_list_.size();
  91 }
  92