2 simultaneous-music-iterator.hh -- declare Simultaneous_music_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #ifndef SIMULTANEOUS_MUSIC_ITERATOR_HH
11 #define SIMULTANEOUS_MUSIC_ITERATOR_HH
13 #include "music-iterator.hh"
15 class Simultaneous_music_iterator : public Music_iterator
18 Simultaneous_music_iterator ();
19 Simultaneous_music_iterator (Simultaneous_music_iterator const&);
20 virtual void derived_substitute (Context *f, Context *t) ;
21 virtual void derived_mark () const;
22 DECLARE_SCHEME_CALLBACK(constructor, ());
24 /// make a new context for every child.
25 bool create_separate_contexts_;
27 virtual void construct_children ();
28 virtual Moment pending_moment () const;
29 virtual void do_quit();
30 virtual bool ok () const;
31 virtual bool run_always () const;
34 virtual void process (Moment);
35 virtual Music_iterator *try_music_in_children (Music *) const;
41 #endif // SIMULTANEOUS_MUSIC_ITERATOR_HH