-/*
+/*
recording-group-engraver.cc -- implement Recording_group_engraver
source file of the GNU LilyPond music typesetter
- (c) 2003--2004 Han-Wen Nienhuys <hanwen@xs4all.nl>
-
- */
+ (c) 2003--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+#include "recording-group-engraver.hh"
#include "context.hh"
-#include "engraver-group-engraver.hh"
-#include "protected-scm.hh"
-class Recording_group_engraver : public Engraver_group_engraver
-{
- void start ();
-public:
- TRANSLATOR_DECLARATIONS (Recording_group_engraver);
- virtual bool try_music (Music *m);
- virtual void start_translation_timestep ();
- virtual void stop_translation_timestep ();
- virtual void finalize ();
- virtual void initialize ();
- virtual void derived_mark () const;
- SCM accumulator_;
-};
void
Recording_group_engraver::derived_mark () const
{
- Engraver_group_engraver::derived_mark();
+ Engraver_group_engraver::derived_mark ();
+ scm_gc_mark (now_events_);
scm_gc_mark (accumulator_);
}
-void
-Recording_group_engraver::initialize ()
-{
- Engraver_group_engraver::initialize ();
- start ();
-}
-
Recording_group_engraver::Recording_group_engraver ()
{
accumulator_ = SCM_EOL;
+ now_events_ = SCM_EOL;
}
void
-Recording_group_engraver::start_translation_timestep ()
-{
- Engraver_group_engraver::start_translation_timestep ();
-
-
- /*
- We have to do this both in initialize () and
- start_translation_timestep (), since start_translation_timestep ()
- isn't called on the first time-step.
- */
- start () ;
-}
-
-void
-Recording_group_engraver::start ()
+Recording_group_engraver::add_music (SCM music, SCM success)
{
- if (!scm_is_pair (accumulator_))
- accumulator_ = scm_cons (SCM_EOL, SCM_EOL);
- if (!scm_is_pair (ly_car (accumulator_)))
- {
- /*
- Need to store transposition for every moment; transposition changes during pieces.
- */
- scm_set_car_x (accumulator_, scm_cons (scm_cons (now_mom ().smobbed_copy (),
- get_property ("instrumentTransposition")),
- SCM_EOL));
- }
+ now_events_ = scm_cons (scm_cons (music, success), now_events_);
}
void
Recording_group_engraver::stop_translation_timestep ()
{
- Engraver_group_engraver::stop_translation_timestep ();
- scm_set_cdr_x (accumulator_, scm_cons (ly_car (accumulator_), ly_cdr (accumulator_)));
-
- scm_set_car_x (accumulator_, SCM_EOL);
+ accumulator_ = scm_acons (scm_cons (context ()->now_mom ().smobbed_copy (),
+ context ()->get_property ("instrumentTransposition")),
+ now_events_,
+ accumulator_);
+ now_events_ = SCM_EOL;
}
void
Recording_group_engraver::finalize ()
{
- Engraver_group_engraver::finalize ();
- SCM proc = get_property ("recordEventSequence");
-
- if (ly_c_procedure_p (proc))
- scm_call_2 (proc, context ()->self_scm (), ly_cdr (accumulator_));
+ SCM proc = context()->get_property ("recordEventSequence");
- accumulator_ = SCM_EOL;
+ if (ly_is_procedure (proc))
+ scm_call_2 (proc, context ()->self_scm (), scm_cdr (accumulator_));
}
bool
-Recording_group_engraver::try_music (Music *m)
+Recording_group_engraver::try_music (Music *m)
{
bool retval = Translator_group::try_music (m);
- SCM seq = ly_cdar (accumulator_);
- seq = scm_cons (scm_cons (m->self_scm (), ly_bool2scm (retval)),
- seq);
-
- scm_set_cdr_x (ly_car (accumulator_), seq);
-
+ add_music (m->self_scm (), ly_bool2scm (retval));
return retval;
}
+void
+recording_engraver (Translator_group *tg)
+{
+ Recording_group_engraver *rg = dynamic_cast<Recording_group_engraver*> (tg);
+ rg->stop_translation_timestep ();
+}
+
+void
+Recording_group_engraver::fetch_precomputable_methods (Translator_group_void_method ptrs[])
+{
+ Translator_group::fetch_precomputable_methods (ptrs);
+ ptrs[STOP_TRANSLATION_TIMESTEP] = &recording_engraver;
+}
-ENTER_DESCRIPTION (Recording_group_engraver,
- "Engraver_group_engraver that records all music events "
- "for this context. Calls the procedure "
- "in @code{recordEventSequence} when finished.",
- "",
- "",
- "",
- "recordEventSequence",
- "");
+ADD_TRANSLATOR_GROUP (Recording_group_engraver,
+ "Engraver_group_engraver that records all music events "
+ "for this context. Calls the procedure "
+ "in @code{recordEventSequence} when finished.",
+ "",
+ "",
+ "recordEventSequence",
+ "");