2 Translator_group.cc -- implement Translator_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 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 "killing-cons.tcc"
16 #include "translator-def.hh"
18 Translator_group::Translator_group (Translator_group const&s)
23 Scheme_hash_table * tab = new Scheme_hash_table (*s.properties_dict ());
24 properties_scm_ = tab->self_scm ();
25 scm_unprotect_object (tab->self_scm( ));
29 Translator_group::properties_dict () const
31 return Scheme_hash_table::unsmob (properties_scm_);
34 Translator_group::~Translator_group ()
37 //assert (removable_b());
41 Translator_group::Translator_group()
44 Scheme_hash_table *tab = new Scheme_hash_table ;
45 properties_scm_ = tab->self_scm ();
47 scm_unprotect_object (tab->self_scm ());
51 Translator_group::check_removal()
54 for (SCM p = trans_group_list_; gh_pair_p (p); p = next)
58 Translator_group *trg = dynamic_cast<Translator_group*> (unsmob_translator (gh_car (p)));
60 trg->check_removal ();
61 if (trg->removable_b())
62 terminate_translator (trg);
68 Translator_group::add_translator (SCM list, Translator *t)
70 list = gh_append2 (list, gh_cons (t->self_scm (), SCM_EOL));
71 t->daddy_trans_l_ = this;
72 t->output_def_l_ = output_def_l_;
74 t->do_creation_processing ();
78 Translator_group::add_group_translator (Translator *t)
80 trans_group_list_ = add_translator (trans_group_list_,t);
86 Translator_group::removable_b() const
88 return trans_group_list_ == SCM_EOL && ! iterator_count_;
92 Translator_group::find_existing_translator_l (String n, String id)
94 if (is_alias_b (n) && (id_str_ == id || id.empty_b ()))
97 Translator_group* r = 0;
98 for (SCM p = trans_group_list_; !r && gh_pair_p (p); p = gh_cdr (p))
100 Translator * t = unsmob_translator (gh_car (p));
102 r = dynamic_cast<Translator_group*> (t)->find_existing_translator_l (n, id);
112 Translator_group::find_create_translator_l (String n, String id)
114 Translator_group * existing = find_existing_translator_l (n,id);
118 Link_array<Translator_def> path
119 = unsmob_translator_def (definition_)->path_to_acceptable_translator (ly_str02scm ((char*)n.ch_C()), output_def_l ());
123 Translator_group * current = this;
125 // start at 1. The first one (index 0) will be us.
126 for (int i=0; i < path.size (); i++)
128 Translator_group * new_group = path[i]->instantiate (output_def_l_);
130 current->add_group_translator (new_group);
133 current->id_str_ = id;
137 Translator_group *ret = 0;
139 ret = daddy_trans_l_->find_create_translator_l (n,id);
142 warning (_f ("can't find or create `%s' called `%s'", n, id));
149 Translator_group::try_music_on_nongroup_children (Music *m)
151 bool hebbes_b =false;
153 for (SCM p = simple_trans_list_; !hebbes_b && gh_pair_p (p); p = gh_cdr (p))
155 hebbes_b = unsmob_translator (gh_car (p))->try_music (m);
161 Translator_group::try_music (Music* m)
163 bool hebbes_b = try_music_on_nongroup_children (m);
165 if (!hebbes_b && daddy_trans_l_)
166 hebbes_b = daddy_trans_l_->try_music (m);
171 Translator_group::depth_i() const
173 return (daddy_trans_l_) ? daddy_trans_l_->depth_i() + 1 : 0;
177 Translator_group::ancestor_l (int level)
179 if (!level || !daddy_trans_l_)
182 return daddy_trans_l_->ancestor_l (level-1);
186 Translator_group::terminate_translator (Translator*r_l)
188 r_l->removal_processing();
190 Return value ignored. GC does the rest.
192 remove_translator_p (r_l);
197 Remove a translator from the hierarchy.
200 Translator_group::remove_translator_p (Translator*trans_l)
204 trans_group_list_ = scm_delq_x (trans_l->self_scm (), trans_group_list_);
205 trans_l->daddy_trans_l_ = 0;
210 Translator_group::is_bottom_translator_b () const
212 return !gh_string_p (unsmob_translator_def (definition_)->default_child_context_name ());
217 Translator_group::get_default_interpreter()
219 if (!is_bottom_translator_b ())
221 SCM nm = unsmob_translator_def (definition_)->default_child_context_name ();
222 SCM st = output_def_l ()->find_translator_l (nm);
224 Translator_def *t = unsmob_translator_def (st);
227 warning (_f ("can't find or create: `%s'", ly_scm2string (nm).ch_C()));
228 t = unsmob_translator_def (this->definition_);
230 Translator_group *tg = t->instantiate (output_def_l_);
231 add_group_translator (tg);
233 if (!tg->is_bottom_translator_b ())
234 return tg->get_default_interpreter ();
242 static_each (SCM list, Method_pointer method)
244 for (SCM p = list; gh_pair_p (p); p = gh_cdr(p))
245 (unsmob_translator (gh_car (p))->*method) ();
250 Translator_group::each (Method_pointer method)
252 static_each (simple_trans_list_, method);
253 static_each (trans_group_list_, method);
259 Translator_group::do_add_processing ()
261 unsmob_translator_def (definition_)->apply_property_operations (this);
262 for (SCM s = simple_trans_list_; gh_pair_p (s) ; s = gh_cdr (s))
264 Translator * t = unsmob_translator (gh_car (s));
265 t->add_processing ();
273 Translator_group::where_defined (SCM sym) const
275 if (properties_dict ()->elem_b (sym))
277 return (Translator_group*)this;
280 return (daddy_trans_l_) ? daddy_trans_l_->where_defined (sym) : 0;
284 return SCM_EOL when not found.
287 Translator_group::get_property (SCM sym) const
290 if (properties_dict ()->try_retrieve (sym, &val))
294 return daddy_trans_l_->get_property (sym);
300 Translator_group::set_property (String id, SCM val)
302 set_property (ly_symbol2scm (id.ch_C()), val);
306 Translator_group::set_property (SCM sym, SCM val)
308 properties_dict ()->set (sym, val);
312 Push or pop (depending on value of VAL) a single entry (ELTPROP . VAL)
313 entry from a translator property list by name of PROP
316 Translator_group::execute_single_pushpop_property (SCM prop, SCM eltprop, SCM val)
318 if (gh_symbol_p(prop))
320 if (val != SCM_UNDEFINED)
322 SCM prev = get_property (prop);
324 if (gh_pair_p (prev) || prev == SCM_EOL)
326 bool ok = type_check_assignment (val, eltprop, ly_symbol2scm ("backend-type?"));
332 prev = gh_cons (gh_cons (eltprop, val), prev);
333 set_property (prop, prev);
344 SCM prev = get_property (prop);
346 SCM newprops= SCM_EOL ;
347 while (gh_pair_p (prev) && gh_caar (prev) != eltprop)
349 newprops = gh_cons (gh_car (prev), newprops);
350 prev = gh_cdr (prev);
353 if (gh_pair_p (prev))
355 newprops = scm_reverse_x (newprops, gh_cdr (prev));
356 set_property (prop, newprops);
370 Translator_group::stop_translation_timestep ()
372 each (&Translator::pre_move_processing);
376 Translator_group::start_translation_timestep ()
378 each (&Translator::post_move_processing);
382 Translator_group::do_announces ()
384 each (&Translator::announces);
388 Translator_group::do_creation_processing ()
390 each (&Translator::do_creation_processing);
394 Translator_group::do_removal_processing ()
396 each (&Translator::removal_processing);
401 type_check_assignment (SCM val, SCM sym, SCM type_symbol)
404 SCM type_p = SCM_EOL;
405 SCM errport = scm_current_error_port ();
408 type_p = scm_object_property (sym, type_symbol);
410 if (type_p != SCM_EOL && !gh_procedure_p (type_p))
412 scm_puts (_("Couldn't find property type-check for `").ch_C(),errport);
413 scm_puts (String ("'").ch_C(), errport);
414 scm_display (sym, errport);
416 scm_puts (_(". Perhaps you made a typing error?\n").ch_C(),errport);
421 && gh_procedure_p (type_p)
422 && gh_call1 (type_p, val) == SCM_BOOL_F)
425 scm_puts (_("Failed typecheck for `").ch_C (),errport);
426 scm_display (sym,errport);
427 scm_puts ( _("', value `").ch_C (), errport);
428 scm_write (val, errport);
429 scm_puts (_("' must be of type ").ch_C (), errport);
430 SCM typefunc = scm_eval2 (ly_symbol2scm ("type-name"), SCM_EOL);
431 scm_display (gh_call1 (typefunc, type_p), errport);
432 scm_puts ("\n", errport);