lily/global-translator.cc

   1 /*
   2   global-translator.cc -- implement Global_translator
   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 "debug.hh"
  10 #include "music.hh"
  11 #include "request.hh"
  12 #include "music-list.hh"
  13 #include "music-iterator.hh"
  14 #include "global-translator.hh"
  15
  16 Global_translator::Global_translator ()
  17 {
  18 }
  19
  20 void
  21 Global_translator::add_moment_to_process (Moment m)
  22 {
  23   if (m  > final_mom_)
  24     return;
  25
  26   if (m < now_mom_)
  27     programming_error ("Trying to freeze in time.");
  28
  29   for (int i=0; i <  extra_mom_pq_.size (); i++)
  30     if (extra_mom_pq_[i] == m)
  31       return;
  32   extra_mom_pq_.insert (m);
  33 }
  34
  35 Moment
  36 Global_translator::sneaky_insert_extra_moment (Moment w)
  37 {
  38   while (extra_mom_pq_.size () && extra_mom_pq_.front () <= w)
  39     w = extra_mom_pq_.get ();
  40   return w;
  41 }
  42
  43 int
  44 Global_translator::moments_left_i () const
  45 {
  46   return extra_mom_pq_.size ();
  47 }
  48
  49 void
  50 Global_translator::prepare (Moment m)
  51 {
  52   prev_mom_  = now_mom_;
  53   now_mom_ = m;
  54 }
  55
  56 Moment
  57 Global_translator::now_mom () const
  58 {
  59   return now_mom_;
  60 }
  61
  62
  63
  64 Music_output*
  65 Global_translator::get_output_p ()
  66 {
  67   return 0;
  68 }
  69
  70 void
  71 Global_translator::one_time_step ()
  72 {
  73 }
  74 void
  75 Global_translator::start ()
  76 {
  77 }
  78 void
  79 Global_translator::finish ()
  80 {
  81 }
  82
  83 void
  84 Global_translator::run_iterator_on_me (Music_iterator * iter)
  85 {
  86   if (iter-> ok ())
  87     prev_mom_ = now_mom_ = iter->pending_moment ();
  88
  89   bool first = true;
  90   while (iter->ok () || moments_left_i ())
  91     {
  92       Moment w;
  93       w.set_infinite (1);
  94       if (iter->ok ())
  95         {
  96           w = iter->pending_moment ();
  97         }
  98
  99       w = sneaky_insert_extra_moment (w);
 100
 101       cout << "Proccing " << w << endl;
 102
 103
 104       if (first)
 105         {
 106           first = false;
 107           set_property (ly_symbol2scm ("measurePosition"), w.smobbed_copy ());
 108         }
 109
 110       prepare (w);
 111       if (iter->ok ())
 112         iter->process (w);
 113
 114       one_time_step ();
 115     }
 116 }