lily/music-wrapper-iterator.cc

   1 /*
   2   music-wrapper-iterator.cc --  implement Music_wrapper_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   7  */
   8
   9
  10 #include "music-wrapper-iterator.hh"
  11 #include "music-wrapper.hh"
  12
  13 Music_wrapper_iterator::Music_wrapper_iterator ()
  14 {
  15   child_iter_p_ =0;
  16 }
  17
  18 Music_wrapper_iterator::Music_wrapper_iterator (Music_wrapper_iterator const &src)
  19   : Music_iterator (src)
  20 {
  21   if (src.child_iter_p_)
  22     child_iter_p_ = src.child_iter_p_->clone ();
  23   else
  24     child_iter_p_ = 0;
  25 }
  26
  27 Music_wrapper_iterator::~Music_wrapper_iterator ()
  28 {
  29   delete child_iter_p_;
  30 }
  31
  32
  33 void
  34 Music_wrapper_iterator::construct_children ()
  35 {
  36   child_iter_p_ =
  37     get_iterator_p (dynamic_cast<Music_wrapper const*> (music_l_)->element ());
  38 }
  39
  40 bool
  41 Music_wrapper_iterator::ok () const
  42 {
  43   return child_iter_p_ && child_iter_p_->ok ();
  44 }
  45 void
  46 Music_wrapper_iterator::skip (Moment m)
  47 {
  48   /*
  49     FIXME: should make sure that the initial try_music () is skipped as
  50     well, if you would do
  51
  52     iter = get_iterator (Side_effect_music); // eg. property setting
  53     iter->skip (1/2)
  54     iter->process ()
  55
  56   */
  57   child_iter_p_->skip (m);
  58 }
  59
  60 void
  61 Music_wrapper_iterator::process (Moment m)
  62 {
  63   child_iter_p_->process (m);
  64 }
  65
  66 SCM
  67 Music_wrapper_iterator::get_music (Moment m)const
  68 {
  69   return child_iter_p_->get_music (m);
  70 }
  71
  72 Moment
  73 Music_wrapper_iterator::pending_moment () const
  74 {
  75   return child_iter_p_->pending_moment ();
  76 }
  77
  78 Music_iterator*
  79 Music_wrapper_iterator::try_music_in_children (Music *m) const
  80 {
  81   return child_iter_p_->try_music (m);
  82 }
  83
  84 IMPLEMENT_CTOR_CALLBACK (Music_wrapper_iterator);