2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #ifndef SIMULTANEOUS_MUSIC_ITERATOR_HH
21 #define SIMULTANEOUS_MUSIC_ITERATOR_HH
23 #include "music-iterator.hh"
25 class Simultaneous_music_iterator : public Music_iterator
28 Simultaneous_music_iterator ();
29 Simultaneous_music_iterator (Simultaneous_music_iterator const &);
30 virtual void derived_substitute (Context *f, Context *t);
31 virtual void derived_mark () const;
32 DECLARE_SCHEME_CALLBACK (constructor, ());
33 DECLARE_CLASSNAME (Simultaneous_music_iterator);
35 /// make a new context for every child.
36 bool create_separate_contexts_;
38 virtual void construct_children ();
39 virtual Moment pending_moment () const;
40 virtual void do_quit ();
41 virtual bool ok () const;
42 virtual bool run_always () const;
45 virtual void process (Moment);
51 #endif // SIMULTANEOUS_MUSIC_ITERATOR_HH