lily/simple-music-iterator.cc

   1 /*
   2   simple-music-iterator.cc --  implement Simple_music_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 2000--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7
   8  */
   9
  10 #include "simple-music-iterator.hh"
  11 #include "music.hh"
  12 #include "input.hh"
  13
  14 Simple_music_iterator::Simple_music_iterator ()
  15   : Music_iterator ()
  16 {
  17   last_processed_mom_ = -1;
  18 }
  19
  20 bool
  21 Simple_music_iterator::ok ()const
  22 {
  23   return last_processed_mom_ < music_get_length ();
  24 }
  25
  26 /*
  27   TODO: remove last_processed_mom_, and the complete shit.  We should
  28   only process a simple-music once, and that is at its start.
  29
  30   Engravers can detect and event the end-moments to be processed as
  31   well.
  32
  33 */
  34 Moment
  35 Simple_music_iterator::pending_moment ()const
  36 {
  37   if (last_processed_mom_ < Moment (0))
  38     return Moment (0);
  39   else
  40     return music_get_length ();
  41 }
  42
  43
  44 void
  45 Simple_music_iterator::process (Moment m)
  46 {
  47   /*
  48   don't do try_music (), since it would make the function useless for
  49   base classes
  50   */
  51
  52   last_processed_mom_ = m;
  53 }
  54
  55 IMPLEMENT_CTOR_CALLBACK (Simple_music_iterator);