lily/include/music-wrapper-iterator.hh

   1 /*
   2   music-wrapper-iterator.hh -- declare Music_wrapper_iterator
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
   7 */
   8
   9 #ifndef MUSIC_WRAPPER_ITERATOR_HH
  10 #define MUSIC_WRAPPER_ITERATOR_HH
  11
  12 #include "music.hh"
  13 #include "music-iterator.hh"
  14
  15 /**
  16    The iterator for a #Music_wrapper#.  Since #Music_wrapper# essentially
  17    does nothing, this iterator creates a child iterator and delegates
  18    all work to that child.
  19 */
  20 class Music_wrapper_iterator : public Music_iterator
  21 {
  22 public:
  23   DECLARE_SCHEME_CALLBACK (constructor, ());
  24   Music_wrapper_iterator ();
  25   DECLARE_CLASSNAME(Music_wrapper_iterator);
  26
  27   virtual void derived_substitute (Context *f, Context *t);
  28   virtual void derived_mark () const;
  29   virtual void construct_children ();
  30   virtual Moment pending_moment () const;
  31   virtual void do_quit ();
  32   virtual bool ok () const;
  33   virtual bool run_always () const;
  34 protected:
  35   virtual void process (Moment);
  36   virtual Music_iterator *try_music_in_children (Music *) const;
  37
  38   Music_iterator *child_iter_;
  39 };
  40
  41 #endif /* MUSIC_WRAPPER_ITERATOR_HH */
  42