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 ()
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_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 (gh_car (p)));
59 trg->check_removal ();
60 if (trg->removable_b())
61 terminate_translator (trg);
67 Translator_group::add_translator (SCM list, Translator *t)
69 list = gh_append2 (list, gh_cons (t->self_scm (), SCM_EOL));
70 t->daddy_trans_l_ = this;
71 t->output_def_l_ = output_def_l_;
77 Translator_group::add_group_translator (Translator *t)
79 trans_group_list_ = add_translator (trans_group_list_,t);
85 Translator_group::removable_b() const
87 return trans_group_list_ == SCM_EOL && ! iterator_count_;
91 Translator_group::find_existing_translator_l (String n, String id)
93 if (is_alias_b (n) && (id_str_ == id || id.empty_b ()))
96 Translator_group* r = 0;
97 for (SCM p = trans_group_list_; !r && gh_pair_p (p); p = gh_cdr (p))
99 Translator * t = unsmob_translator (gh_car (p));
101 r = dynamic_cast<Translator_group*> (t)->find_existing_translator_l (n, id);
111 Translator_group::find_create_translator_l (String n, String id)
113 Translator_group * existing = find_existing_translator_l (n,id);
117 Link_array<Translator_def> path
118 = unsmob_translator_def (definition_)->path_to_acceptable_translator (gh_str02scm (n.ch_C()), output_def_l ());
122 Translator_group * current = this;
124 // start at 1. The first one (index 0) will be us.
125 for (int i=0; i < path.size (); i++)
127 Translator_group * new_group = path[i]->instantiate (output_def_l_);
129 current->add_group_translator (new_group);
132 current->id_str_ = id;
136 Translator_group *ret = 0;
138 ret = daddy_trans_l_->find_create_translator_l (n,id);
141 warning (_f ("can't find or create `%s' called `%s'", n, id));
148 Translator_group::try_music_on_nongroup_children (Music *m)
150 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::do_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;
211 should not use, instead: use properties to communicate between engravers.
214 Translator_group::get_simple_translator (String type) const
216 for (SCM p = simple_trans_list_; gh_pair_p (p); p =gh_cdr (p))
218 if (classname (unsmob_translator (gh_car (p))) == type)
219 return unsmob_translator (gh_car (p));
222 return daddy_trans_l_->get_simple_translator (type);
228 Translator_group::is_bottom_translator_b () const
230 return unsmob_translator_def (definition_)->accepts_name_list_ == SCM_EOL;
234 Translator_group::get_default_interpreter()
236 if (!is_bottom_translator_b ())
238 SCM nm = unsmob_translator_def (definition_)->accepts_name_list_;
239 SCM st = output_def_l ()->find_translator_l (gh_car (nm));
241 Translator_def *t = unsmob_translator_def (st);
244 warning (_f ("can't find or create: `%s'", ly_scm2string (nm).ch_C()));
245 t = unsmob_translator_def (this->definition_);
247 Translator_group *tg = t->instantiate (output_def_l_);
248 add_group_translator (tg);
250 if (!tg->is_bottom_translator_b ())
251 return tg->get_default_interpreter ();
259 static_each (SCM list, Method_pointer method)
261 for (SCM p = list; gh_pair_p (p); p = gh_cdr(p))
262 (unsmob_translator (gh_car (p))->*method) ();
267 Translator_group::each (Method_pointer method)
269 static_each (simple_trans_list_, method);
270 static_each (trans_group_list_, method);
274 Translator_group::do_print() const
281 Translator_group::do_add_processing ()
283 for (SCM s = simple_trans_list_; gh_pair_p (s) ; s = gh_cdr (s))
285 Translator * t = unsmob_translator (gh_car (s));
286 t->add_processing ();
294 Translator_group::where_defined (SCM sym) const
296 if (properties_dict ()->elem_b (sym))
298 return (Translator_group*)this;
301 return (daddy_trans_l_) ? daddy_trans_l_->where_defined (sym) : 0;
305 Translator_group::get_property (SCM sym) const
307 if (properties_dict ()->elem_b (sym))
309 return properties_dict ()->get (sym);
313 return daddy_trans_l_->get_property (sym);
315 return SCM_UNDEFINED;
319 Translator_group::set_property (String id, SCM val)
321 set_property (ly_symbol2scm (id.ch_C()), val);
325 Translator_group::set_property (SCM sym, SCM val)
327 properties_dict ()->set (sym, val);
331 Push or pop (depending on value of VAL) a single entry (ELTPROP . VAL)
332 entry from a translator property list by name of PROP
335 Translator_group::execute_single_pushpop_property (SCM prop, SCM eltprop, SCM val)
337 if (gh_symbol_p(prop))
339 if (val != SCM_UNDEFINED)
341 SCM prev = get_property (prop);
343 prev = gh_cons (gh_cons (eltprop, val), prev);
344 set_property (prop, prev);
348 SCM prev = get_property (prop);
350 SCM newprops= SCM_EOL ;
351 while (gh_pair_p (prev) && gh_caar (prev) != eltprop)
353 newprops = gh_cons (gh_car (prev), newprops);
354 prev = gh_cdr (prev);
357 if (gh_pair_p (prev))
359 newprops = scm_reverse_x (newprops, gh_cdr (prev));
360 set_property (prop, newprops);
374 Translator_group::do_pre_move_processing ()
376 each (&Translator::pre_move_processing);
380 Translator_group::do_post_move_processing ()
382 each (&Translator::post_move_processing);
386 Translator_group::do_process_music ()
388 each (&Translator::process_music);
392 Translator_group::do_creation_processing ()
394 each (&Translator::creation_processing);
398 Translator_group::do_removal_processing ()
400 each (&Translator::removal_processing);