2 recording-group-engraver.cc -- implement Recording_group_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 2003--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "recording-group-engraver.hh"
13 Recording_group_engraver::derived_mark () const
15 Engraver_group::derived_mark ();
16 scm_gc_mark (now_events_);
17 scm_gc_mark (accumulator_);
20 Recording_group_engraver::Recording_group_engraver ()
22 accumulator_ = SCM_EOL;
23 now_events_ = SCM_EOL;
27 Recording_group_engraver::add_music (SCM music, SCM success)
29 now_events_ = scm_cons (scm_cons (music, success), now_events_);
33 Recording_group_engraver::stop_translation_timestep ()
35 accumulator_ = scm_acons (scm_cons (context ()->now_mom ().smobbed_copy (),
36 context ()->get_property ("instrumentTransposition")),
39 now_events_ = SCM_EOL;
43 Recording_group_engraver::finalize ()
45 SCM proc = context ()->get_property ("recordEventSequence");
47 if (ly_is_procedure (proc))
48 scm_call_2 (proc, context ()->self_scm (), scm_cdr (accumulator_));
52 Recording_group_engraver::try_music (Music *m)
54 bool retval = Translator_group::try_music (m);
56 add_music (m->self_scm (), ly_bool2scm (retval));
61 recording_engraver (Translator_group *tg)
63 Recording_group_engraver *rg = dynamic_cast<Recording_group_engraver *> (tg);
64 rg->stop_translation_timestep ();
68 Recording_group_engraver::fetch_precomputable_methods (Translator_group_void_method ptrs[])
70 Translator_group::fetch_precomputable_methods (ptrs);
71 ptrs[STOP_TRANSLATION_TIMESTEP] = &recording_engraver;
74 ADD_TRANSLATOR_GROUP (Recording_group_engraver,
75 "Engraver_group that records all music events "
76 "for this context. Calls the procedure "
77 "in @code{recordEventSequence} when finished.",
80 "recordEventSequence",