source file of the GNU LilyPond music typesetter
- (c) 1997--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
#include "translator.hh"
-#include "debug.hh"
+
+#include "warn.hh"
#include "translator-group.hh"
+#include "context-def.hh"
+#include "dispatcher.hh"
+#include "global-context.hh"
-#include "moment.hh"
+#include "translator.icc"
#include "ly-smobs.icc"
-char const*
-Translator::name () const
-{
- return classname (this);
-}
-
Translator::~Translator ()
{
}
void
Translator::init ()
{
- simple_trans_list_ = SCM_EOL;
- trans_group_list_ = SCM_EOL;
- properties_scm_ = SCM_EOL;
- definition_ = SCM_EOL;
- daddy_trans_l_ =0;
+ must_be_last_ = false;
+ self_scm_ = SCM_EOL;
+ daddy_context_ = 0;
+ smobify_self ();
}
-Translator::Translator ()
+void
+Translator::process_music ()
{
- init ();
- output_def_l_ = 0;
- smobify_self ();
+}
+void
+Translator::process_acknowledged ()
+{
}
-Translator::Translator (Translator const &s)
- : Input (s)
+Translator::Translator ()
{
init ();
- output_def_l_ = s.output_def_l_;
- type_str_ = s.type_str_;
-
- smobify_self ();
}
-bool
-Translator::is_alias_b (String s) const
+Translator::Translator (Translator const &src)
{
- return s == type_str_;
+ init ();
+ must_be_last_ = src.must_be_last_;
}
bool
{
return false;
}
-
Moment
Translator::now_mom () const
{
- return daddy_trans_l_->now_mom ();
+ return daddy_context_->now_mom ();
}
-
-
-
-
-void
-Translator::post_move_processing ()
+Output_def *
+Translator::get_output_def () const
{
- start_translation_timestep ();
+ return daddy_context_->get_output_def ();
}
-void
-Translator::removal_processing ()
+Translator_group *
+Translator::get_daddy_translator () const
{
- finalize ();
+ return daddy_context_->implementation ();
}
-
void
-Translator::announces ()
+Translator::protect_event (SCM ev)
{
- do_announces ();
+ get_daddy_translator ()->protect_event (ev);
}
-
-void
-Translator::pre_move_processing ()
+SCM
+Translator::internal_get_property (SCM sym) const
{
- stop_translation_timestep ();
+ return daddy_context_->internal_get_property (sym);
}
-
-
-Music_output_def *
-Translator::output_def_l () const
+void
+Translator::stop_translation_timestep ()
{
- return output_def_l_;
}
-SCM
-Translator::get_property (char const * id) const
-{
- return daddy_trans_l_->get_property (ly_symbol2scm (id));
-}
+/*
+ this function has 2 properties
-SCM
-Translator::get_property (SCM sym) const
-{
- return daddy_trans_l_->get_property (sym);
-}
+ - It is called before try_music ()
+ - It is called before any user information enters the translators.
+ (i.e. any \property or event is not processed yet.)
+*/
void
-Translator:: stop_translation_timestep ()
+Translator::start_translation_timestep ()
{
}
void
-Translator::start_translation_timestep ()
+Translator::initialize ()
{
}
void
-Translator::do_announces ()
+Translator::finalize ()
{
}
void
-Translator::initialize ()
+Translator::connect_to_context (Context *c)
{
+ for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
+ c->events_below ()->add_listener (r->get_listener_ (this), r->event_class_);
}
void
-Translator::finalize ()
+Translator::disconnect_from_context (Context *c)
{
+ for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
+ c->events_below ()->remove_listener (r->get_listener_ (this), r->event_class_);
}
-
/*
+ Internally called once, statically, for each translator
+ listener. Connects the name of an event class with a procedure that
+ fetches the corresponding listener.
- SMOBS
+ The method should only be called from the macro
+ IMPLEMENT_TRANSLATOR_LISTENER.
+ */
+void
+Translator::add_translator_listener (translator_listener_record **listener_list,
+ translator_listener_record *r,
+ Listener (*get_listener) (void *),
+ const char *ev_class)
+{
+ /* ev_class is the C++ identifier name. Convert to scm symbol */
+ string name = string (ev_class);
+ name = replace_all (name, '_', '-');
+ name = name + "-event";
+ /* It's OK to use scm_gc_protect_object for protection, because r is
+ statically allocated. */
+ r->event_class_ = scm_gc_protect_object (scm_str2symbol (name.c_str ()));
+ r->get_listener_ = get_listener;
+ r->next_ = *listener_list;
+ *listener_list = r;
+}
+/*
+ SMOBS
*/
SCM
Translator::mark_smob (SCM sm)
{
- Translator * me = (Translator*) SCM_CELL_WORD_1 (sm);
- scm_gc_mark (me->simple_trans_list_);
- scm_gc_mark (me->trans_group_list_);
- scm_gc_mark (me->definition_);
- scm_gc_mark (me->properties_scm_);
+ Translator *me = (Translator *) SCM_CELL_WORD_1 (sm);
+ me->derived_mark ();
+ return SCM_EOL;
+}
- return me->properties_scm_;
+Global_context *
+Translator::get_global_context () const
+{
+ return daddy_context_->get_global_context ();
}
+Context *
+Translator::get_score_context () const
+{
+ return daddy_context_->get_score_context ();
+}
+
+IMPLEMENT_SMOBS (Translator);
+IMPLEMENT_DEFAULT_EQUAL_P (Translator);
+IMPLEMENT_TYPE_P (Translator, "ly:translator?");
+
+bool
+Translator::must_be_last () const
+{
+ return must_be_last_;
+}
+
+void
+Translator::derived_mark () const
+{
+}
int
Translator::print_smob (SCM s, SCM port, scm_print_state *)
{
- Translator *sc = (Translator *) gh_cdr (s);
-
+ Translator *me = (Translator *) SCM_CELL_WORD_1 (s);
scm_puts ("#<Translator ", port);
- scm_puts ((char *)sc->name (), port);
- scm_display (sc->simple_trans_list_, port);
- /*
- don't try to print properties, that is too much hassle.
- */
+ scm_puts (me->class_name (), port);
scm_puts (" >", port);
-
return 1;
}
-IMPLEMENT_UNSMOB (Translator, translator);
-IMPLEMENT_SMOBS (Translator);
-IMPLEMENT_DEFAULT_EQUAL_P (Translator);
+void
+add_acknowledger (Engraver_void_function_engraver_grob_info ptr,
+ char const *func_name,
+ vector<Acknowledge_information> *ack_array)
+{
+ Acknowledge_information inf;
+ inf.function_ = ptr;
+
+ string interface_name (func_name);
+
+ interface_name = replace_all (interface_name, '_', '-');
+ interface_name += "-interface";
+
+ inf.symbol_ = scm_gc_protect_object (ly_symbol2scm (interface_name.c_str ()));
+ ack_array->push_back (inf);
+}
+
+Engraver_void_function_engraver_grob_info
+generic_get_acknowledger (SCM sym, vector<Acknowledge_information> const *ack_array)
+{
+ for (vsize i = 0; i < ack_array->size (); i++)
+ {
+ if (ack_array->at (i).symbol_ == sym)
+ return ack_array->at (i).function_;
+ }
+ return 0;
+}
+
+Moment
+get_event_length (Stream_event *e)
+{
+ Moment *m = unsmob_moment (e->get_property ("length"));
+ if (m)
+ return *m;
+ else
+ return Moment (0);
+}
+
+ADD_TRANSLATOR (Translator,
+ "Base class. Unused",
+ "",
+ "",
+ "",
+ "");