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_;
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;
154 for (SCM p = simple_trans_list_; !hebbes_b && gh_pair_p (p); p = gh_cdr (p))
156 hebbes_b = unsmob_translator (gh_car (p))->try_music (m);
162 Translator_group::do_try_music (Music* m)
164 bool hebbes_b = try_music_on_nongroup_children (m);
166 if (!hebbes_b && daddy_trans_l_)
167 hebbes_b = daddy_trans_l_->try_music (m);
172 Translator_group::depth_i() const
174 return (daddy_trans_l_) ? daddy_trans_l_->depth_i() + 1 : 0;
178 Translator_group::ancestor_l (int level)
180 if (!level || !daddy_trans_l_)
183 return daddy_trans_l_->ancestor_l (level-1);
187 Translator_group::terminate_translator (Translator*r_l)
189 r_l->removal_processing();
191 Return value ignored. GC does the rest.
193 remove_translator_p (r_l);
198 Remove a translator from the hierarchy.
201 Translator_group::remove_translator_p (Translator*trans_l)
205 trans_group_list_ = scm_delq_x (trans_l->self_scm (), trans_group_list_);
206 trans_l->daddy_trans_l_ = 0;
212 should not use, instead: use properties to communicate between engravers.
215 Translator_group::get_simple_translator (String type) const
217 for (SCM p = simple_trans_list_; gh_pair_p (p); p =gh_cdr (p))
219 if (classname (unsmob_translator (gh_car (p))) == type)
220 return unsmob_translator (gh_car (p));
223 return daddy_trans_l_->get_simple_translator (type);
229 Translator_group::is_bottom_translator_b () const
231 return unsmob_translator_def (definition_)->accepts_name_list_ == SCM_EOL;
235 Translator_group::get_default_interpreter()
237 if (!is_bottom_translator_b ())
239 SCM nm = unsmob_translator_def (definition_)->accepts_name_list_;
240 SCM st = output_def_l ()->find_translator_l (gh_car (nm));
242 Translator_def *t = unsmob_translator_def (st);
245 warning (_f ("can't find or create: `%s'", ly_scm2string (nm).ch_C()));
246 t = unsmob_translator_def (this->definition_);
248 Translator_group *tg = t->instantiate (output_def_l_);
249 add_group_translator (tg);
251 if (!tg->is_bottom_translator_b ())
252 return tg->get_default_interpreter ();
260 static_each (SCM list, Method_pointer method)
262 for (SCM p = list; gh_pair_p (p); p = gh_cdr(p))
263 (unsmob_translator (gh_car (p))->*method) ();
268 Translator_group::each (Method_pointer method)
270 static_each (simple_trans_list_, method);
271 static_each (trans_group_list_, method);
275 Translator_group::do_print() const
282 Translator_group::do_add_processing ()
284 for (SCM s = simple_trans_list_; gh_pair_p (s) ; s = gh_cdr (s))
286 Translator * t = unsmob_translator (gh_car (s));
287 t->add_processing ();
295 Translator_group::where_defined (SCM sym) const
297 if (properties_dict ()->elem_b (sym))
299 return (Translator_group*)this;
302 return (daddy_trans_l_) ? daddy_trans_l_->where_defined (sym) : 0;
306 Translator_group::get_property (SCM sym) const
308 if (properties_dict ()->elem_b (sym))
310 return properties_dict ()->get (sym);
314 return daddy_trans_l_->get_property (sym);
316 return SCM_UNDEFINED;
320 Translator_group::set_property (String id, SCM val)
322 set_property (ly_symbol2scm (id.ch_C()), val);
326 Translator_group::set_property (SCM sym, SCM val)
328 properties_dict ()->set (sym, val);
332 Push or pop (depending on value of VAL) a single entry (ELTPROP . VAL)
333 entry from a translator property list by name of PROP
336 Translator_group::execute_single_pushpop_property (SCM prop, SCM eltprop, SCM val)
338 if (gh_symbol_p(prop))
340 if (val != SCM_UNDEFINED)
342 SCM prev = get_property (prop);
344 prev = gh_cons (gh_cons (eltprop, val), prev);
345 set_property (prop, prev);
349 SCM prev = get_property (prop);
351 SCM newprops= SCM_EOL ;
352 while (gh_pair_p (prev) && gh_caar (prev) != eltprop)
354 newprops = gh_cons (gh_car (prev), newprops);
355 prev = gh_cdr (prev);
358 if (gh_pair_p (prev))
360 newprops = scm_reverse_x (newprops, gh_cdr (prev));
361 set_property (prop, newprops);
375 Translator_group::do_pre_move_processing ()
377 each (&Translator::pre_move_processing);
381 Translator_group::do_post_move_processing ()
383 each (&Translator::post_move_processing);
387 Translator_group::do_process_music ()
389 each (&Translator::process_music);
393 Translator_group::do_creation_processing ()
395 each (&Translator::creation_processing);
399 Translator_group::do_removal_processing ()
401 each (&Translator::removal_processing);