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>
*/
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 ();
+ void add_music (SCM, SCM);
virtual void stop_translation_timestep ();
virtual void finalize ();
virtual void initialize ();
virtual void derived_mark () const;
+ SCM now_events_;
SCM accumulator_;
};
Recording_group_engraver::derived_mark () const
{
Engraver_group_engraver::derived_mark();
+ scm_gc_mark (now_events_);
scm_gc_mark (accumulator_);
}
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 ()
+Recording_group_engraver::add_music (SCM music, SCM success)
{
- 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 () ;
+ now_events_ = scm_cons (scm_cons (music, success), now_events_);
}
-void
-Recording_group_engraver::start ()
-{
- if (!scm_is_pair (accumulator_))
- accumulator_ = scm_cons (SCM_EOL, SCM_EOL);
- if (!scm_is_pair (scm_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));
- }
-}
void
Recording_group_engraver::stop_translation_timestep ()
{
Engraver_group_engraver::stop_translation_timestep ();
- scm_set_cdr_x (accumulator_, scm_cons (scm_car (accumulator_), scm_cdr (accumulator_)));
- scm_set_car_x (accumulator_, SCM_EOL);
+ accumulator_ = scm_acons (scm_cons (now_mom ().smobbed_copy (),
+ get_property ("instrumentTransposition")),
+ now_events_,
+ accumulator_);
+ now_events_ = SCM_EOL;
}
void
if (ly_c_procedure_p (proc))
scm_call_2 (proc, context ()->self_scm (), scm_cdr (accumulator_));
-
- accumulator_ = SCM_EOL;
}
bool
{
bool retval = Translator_group::try_music (m);
- SCM seq = scm_cdar (accumulator_);
- seq = scm_cons (scm_cons (m->self_scm (), ly_bool2scm (retval)),
- seq);
-
- scm_set_cdr_x (scm_car (accumulator_), seq);
-
+ add_music (m->self_scm (), ly_bool2scm (retval));
return retval;
}
-ENTER_DESCRIPTION (Recording_group_engraver,
+ADD_TRANSLATOR (Recording_group_engraver,
"Engraver_group_engraver that records all music events "
"for this context. Calls the procedure "
"in @code{recordEventSequence} when finished.",