2 scheme-engraver.hh -- declare Scheme_engraver
4 source file of the GNU LilyPond music typesetter
6 Copyright (c) 2009--2015 Han-Wen Nienhuys <hanwen@lilypond.org>
8 LilyPond is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 LilyPond is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef SCHEME_ENGRAVER_HH
23 #define SCHEME_ENGRAVER_HH
25 #include "engraver.hh"
27 class Scheme_engraver : public Engraver
29 void init_from_scheme (SCM definition);
31 TRANSLATOR_FAMILY_DECLARATIONS (Scheme_engraver);
32 Scheme_engraver (SCM definition);
37 void stop_translation_timestep ();
38 void start_translation_timestep ();
39 void process_music ();
40 void process_acknowledged ();
42 virtual void initialize ();
43 virtual void finalize ();
44 virtual void derived_mark () const;
45 virtual SCM get_listener_list () const;
46 virtual bool must_be_last () const;
49 void acknowledge_grob_by_hash (Grob_info info, SCM iface_function_hash);
50 void init_acknowledgers (SCM alist, SCM *hash);
52 DECLARE_ACKNOWLEDGER (grob);
53 DECLARE_END_ACKNOWLEDGER (grob);
57 SCM acknowledge_grob_function_;
58 SCM stop_translation_timestep_function_;
59 SCM start_translation_timestep_function_;
60 SCM process_music_function_;
61 SCM process_acknowledged_function_;
62 SCM initialize_function_;
63 SCM finalize_function_;
65 // hashq table of interface-symbol -> scheme-function
66 SCM interface_acknowledger_hash_;
67 SCM interface_end_acknowledger_hash_;
69 // Alist of listened-symbol . scheme-function
70 SCM per_instance_listeners_;
73 #endif /* SCHEME_ENGRAVER_HH */