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
30 void init_from_scheme (SCM definition);
31 TRANSLATOR_DECLARATIONS_NO_LISTENER (Scheme_engraver);
36 void stop_translation_timestep ();
37 void start_translation_timestep ();
38 void process_music ();
39 void process_acknowledged ();
41 virtual void initialize ();
42 virtual void finalize ();
43 virtual void derived_mark () const;
44 virtual SCM get_listener_list () const;
45 virtual bool must_be_last () const;
48 void acknowledge_grob_by_hash (Grob_info info, SCM iface_function_hash);
49 void init_acknowledgers (SCM alist, SCM *hash);
51 DECLARE_ACKNOWLEDGER (grob);
52 DECLARE_END_ACKNOWLEDGER (grob);
56 SCM acknowledge_grob_function_;
57 SCM stop_translation_timestep_function_;
58 SCM start_translation_timestep_function_;
59 SCM process_music_function_;
60 SCM process_acknowledged_function_;
61 SCM initialize_function_;
62 SCM finalize_function_;
64 // hashq table of interface-symbol -> scheme-function
65 SCM interface_acknowledger_hash_;
66 SCM interface_end_acknowledger_hash_;
68 // Alist of listened-symbol . scheme-function
71 // We dont use this, but need it for the documentation boilerplate.
72 static Protected_scm listener_list_;
73 SCM per_instance_listeners_;
76 #endif /* SCHEME_ENGRAVER_HH */