2 Translator_group.cc -- implement Translator_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "music-output-def.hh"
10 #include "translator-group.hh"
11 #include "translator.hh"
14 #include "scm-hash.hh"
15 #include "translator-def.hh"
17 Translator_group::Translator_group (Translator_group const&s)
22 Scheme_hash_table * tab = new Scheme_hash_table (*s.properties_dict ());
23 properties_scm_ = tab->self_scm ();
24 scm_gc_unprotect_object (tab->self_scm ());
28 Translator_group::properties_dict () const
30 return Scheme_hash_table::unsmob (properties_scm_);
33 Translator_group::~Translator_group ()
36 //assert (removable_b ());
40 Translator_group::Translator_group ()
43 Scheme_hash_table *tab = new Scheme_hash_table ;
44 properties_scm_ = tab->self_scm ();
46 scm_gc_unprotect_object (tab->self_scm ());
50 Translator_group::check_removal ()
53 for (SCM p = trans_group_list_; gh_pair_p (p); p = next)
57 Translator_group *trg = dynamic_cast<Translator_group*> (unsmob_translator (ly_car (p)));
59 trg->check_removal ();
60 if (trg->removable_b ())
61 terminate_translator (trg);
66 Translator_group::add_translator (SCM list, Translator *t)
69 Must append, since list ordering must be preserved.
71 list = gh_append2 (list, gh_cons (t->self_scm (), SCM_EOL));
72 t->daddy_trans_l_ = this;
73 t->output_def_l_ = output_def_l_;
79 Translator_group::add_fresh_simple_translator (Translator*t)
81 simple_trans_list_ = add_translator (simple_trans_list_, t);
86 Translator_group::add_used_group_translator (Translator *t)
88 trans_group_list_ = add_translator (trans_group_list_,t);
93 Translator_group::add_fresh_group_translator (Translator*t)
95 Translator_group*tg = dynamic_cast<Translator_group*> (t);
98 trans_group_list_ = add_translator (trans_group_list_,t);
99 unsmob_translator_def (tg->definition_)->apply_property_operations (tg);
106 Translator_group::removable_b () const
108 return trans_group_list_ == SCM_EOL && ! iterator_count_;
112 Translator_group::find_existing_translator_l (String n, String id)
114 if (is_alias_b (n) && (id_str_ == id || id.empty_b ()))
117 Translator_group* r = 0;
118 for (SCM p = trans_group_list_; !r && gh_pair_p (p); p = ly_cdr (p))
120 Translator * t = unsmob_translator (ly_car (p));
122 r = dynamic_cast<Translator_group*> (t)->find_existing_translator_l (n, id);
132 Translator_group::find_create_translator_l (String n, String id)
134 Translator_group * existing = find_existing_translator_l (n,id);
138 Link_array<Translator_def> path
139 = unsmob_translator_def (definition_)->path_to_acceptable_translator (ly_str02scm ((char*)n.ch_C ()), output_def_l ());
143 Translator_group * current = this;
145 // start at 1. The first one (index 0) will be us.
146 for (int i=0; i < path.size (); i++)
148 Translator_group * new_group = path[i]->instantiate (output_def_l_);
150 if (i == path.size () -1)
151 new_group->id_str_ = id;
152 current->add_fresh_group_translator (new_group);
159 Translator_group *ret = 0;
161 ret = daddy_trans_l_->find_create_translator_l (n,id);
164 warning (_f ("can't find or create `%s' called `%s'", n, id));
171 Translator_group::try_music_on_nongroup_children (Music *m)
173 bool hebbes_b =false;
175 for (SCM p = simple_trans_list_; !hebbes_b && gh_pair_p (p); p = ly_cdr (p))
177 hebbes_b = unsmob_translator (ly_car (p))->try_music (m);
183 Translator_group::try_music (Music* m)
185 bool hebbes_b = try_music_on_nongroup_children (m);
187 if (!hebbes_b && daddy_trans_l_)
188 hebbes_b = daddy_trans_l_->try_music (m);
193 Translator_group::depth_i () const
195 return (daddy_trans_l_) ? daddy_trans_l_->depth_i () + 1 : 0;
199 Translator_group::ancestor_l (int level)
201 if (!level || !daddy_trans_l_)
204 return daddy_trans_l_->ancestor_l (level-1);
208 Translator_group::terminate_translator (Translator*r_l)
210 r_l->removal_processing ();
212 Return value ignored. GC does the rest.
214 remove_translator_p (r_l);
219 Remove a translator from the hierarchy.
222 Translator_group::remove_translator_p (Translator*trans_l)
226 trans_group_list_ = scm_delq_x (trans_l->self_scm (), trans_group_list_);
227 trans_l->daddy_trans_l_ = 0;
232 Translator_group::is_bottom_translator_b () const
234 return !gh_string_p (unsmob_translator_def (definition_)->default_child_context_name ());
239 Translator_group::get_default_interpreter ()
241 if (!is_bottom_translator_b ())
243 SCM nm = unsmob_translator_def (definition_)->default_child_context_name ();
244 SCM st = output_def_l ()->find_translator_l (nm);
246 Translator_def *t = unsmob_translator_def (st);
249 warning (_f ("can't find or create: `%s'", ly_scm2string (nm).ch_C ()));
250 t = unsmob_translator_def (this->definition_);
252 Translator_group *tg = t->instantiate (output_def_l_);
253 add_fresh_group_translator (tg);
255 if (!tg->is_bottom_translator_b ())
256 return tg->get_default_interpreter ();
264 static_each (SCM list, Method_pointer method)
266 for (SCM p = list; gh_pair_p (p); p = ly_cdr (p))
267 (unsmob_translator (ly_car (p))->*method) ();
272 Translator_group::each (Method_pointer method)
274 static_each (simple_trans_list_, method);
275 static_each (trans_group_list_, method);
283 Translator_group::where_defined (SCM sym) const
285 if (properties_dict ()->elem_b (sym))
287 return (Translator_group*)this;
290 return (daddy_trans_l_) ? daddy_trans_l_->where_defined (sym) : 0;
294 return SCM_EOL when not found.
297 Translator_group::internal_get_property (SCM sym) const
300 if (properties_dict ()->try_retrieve (sym, &val))
304 return daddy_trans_l_->internal_get_property (sym);
311 Translator_group::internal_set_property (SCM sym, SCM val)
313 properties_dict ()->set (sym, val);
317 TODO: look up to check whether we have inherited var?
320 Translator_group::unset_property (SCM sym)
322 properties_dict ()->remove (sym);
327 Push or pop (depending on value of VAL) a single entry (ELTPROP . VAL)
328 entry from a translator property list by name of PROP
331 Translator_group::execute_single_pushpop_property (SCM prop, SCM eltprop, SCM val)
333 if (gh_symbol_p (prop))
335 if (val != SCM_UNDEFINED)
337 SCM prev = internal_get_property (prop);
339 if (gh_pair_p (prev) || prev == SCM_EOL)
341 bool ok = type_check_assignment (val, eltprop, ly_symbol2scm ("backend-type?"));
345 prev = gh_cons (gh_cons (eltprop, val), prev);
346 internal_set_property (prop, prev);
357 SCM prev = internal_get_property (prop);
359 SCM newprops= SCM_EOL ;
360 while (gh_pair_p (prev) && ly_caar (prev) != eltprop)
362 newprops = gh_cons (ly_car (prev), newprops);
363 prev = ly_cdr (prev);
366 if (gh_pair_p (prev))
368 newprops = scm_reverse_x (newprops, ly_cdr (prev));
369 internal_set_property (prop, newprops);
383 Translator_group::stop_translation_timestep ()
385 each (&Translator::stop_translation_timestep);
389 Translator_group::start_translation_timestep ()
391 each (&Translator::start_translation_timestep);
395 Translator_group::do_announces ()
397 each (&Translator::announces);
401 Translator_group::initialize ()
403 each (&Translator::initialize);
407 Translator_group::finalize ()
409 each (&Translator::removal_processing);
414 type_check_assignment (SCM val, SCM sym, SCM type_symbol)
417 SCM type_p = SCM_EOL;
419 if (gh_symbol_p (sym))
420 type_p = scm_object_property (sym, type_symbol);
422 if (type_p != SCM_EOL && !gh_procedure_p (type_p))
424 warning (_f ("Can't find property type-check for `%s'. Perhaps you made a typing error? Doing assignment anyway.",
425 ly_symbol2string (sym).ch_C ()));
430 && gh_procedure_p (type_p)
431 && gh_call1 (type_p, val) == SCM_BOOL_F)
433 SCM errport = scm_current_error_port ();
435 SCM typefunc = scm_primitive_eval (ly_symbol2scm ("type-name"));
436 SCM type_name = gh_call1 (typefunc, type_p);
438 scm_puts (_f ("Type check for `%s' failed; value `%s' must be of type `%s'",
439 ly_symbol2string (sym).ch_C (),
440 ly_scm2string (ly_write2scm (val)).ch_C (),
441 ly_scm2string (type_name).ch_C ()).ch_C (),
443 scm_puts ("\n", errport);
450 ly_get_trans_property (SCM context, SCM name)
452 Translator *t = unsmob_translator (context);
453 Translator_group* tr= dynamic_cast<Translator_group*> (t);
456 /* programming_error? */
457 warning (_ ("ly-get-trans-property: expecting a Translator_group argument"));
460 return tr->internal_get_property (name);
464 ly_set_trans_property (SCM context, SCM name, SCM val)
467 Translator *t = unsmob_translator (context);
468 Translator_group* tr= dynamic_cast<Translator_group*> (t);
471 tr->internal_set_property (name, val);
473 return SCM_UNSPECIFIED;
480 add_trans_scm_funcs ()
482 scm_c_define_gsubr ("ly-get-trans-property", 2, 0, 0, (Scheme_function_unknown)ly_get_trans_property);
483 scm_c_define_gsubr ("ly-set-trans-property", 3, 0, 0, (Scheme_function_unknown)ly_set_trans_property);
486 ADD_SCM_INIT_FUNC (trans_scm, add_trans_scm_funcs);