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--1998 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   for (PCursor<Music*> i (simultaneous_music_l ()->music_p_list_p_->top());
  28        i.ok(); j++, i++)
  29     {
  30       Music_iterator * mi = get_iterator_p (i.ptr());
  31       if (mi->ok())
  32         {
  33           if  (simultaneous_music_l ()->translator_type_str_.empty_b ())
  34             set_translator (mi->report_to_l()->ancestor_l (0));
  35           children_p_list_.bottom().add (mi);
  36         }
  37       else
  38         delete mi;
  39     }
  40 }
  41
  42
  43 void
  44 Simultaneous_music_iterator::do_print() const
  45 {
  46 #ifndef NPRINT
  47   for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
  48     {
  49       i->print();
  50     }
  51 #endif
  52 }
  53
  54 void
  55 Simultaneous_music_iterator::do_process_and_next (Moment until)
  56 {
  57   for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok ();)
  58     {
  59       if  (i->next_moment() == until)
  60         {
  61           i->process_and_next (until);
  62         }
  63       if (!i->ok())
  64         delete i.remove_p();
  65       else
  66         i++;
  67     }
  68   Music_iterator::do_process_and_next (until);
  69 }
  70
  71
  72
  73
  74 Moment
  75 Simultaneous_music_iterator::next_moment() const
  76 {
  77   Moment next;
  78   next.set_infinite (1);
  79   for (PCursor<Music_iterator*> i (children_p_list_.top()); i.ok (); i++)
  80     next = next <? i->next_moment() ;
  81   return next;
  82 }
  83
  84
  85
  86 bool
  87 Simultaneous_music_iterator::ok() const
  88 {
  89   return children_p_list_.size();
  90 }
  91
  92 Simultaneous_music*
  93 Simultaneous_music_iterator::simultaneous_music_l ()const
  94 {
  95   return (  Simultaneous_music *) music_l_;
  96 }