2 Translator_group.cc -- implement Translator_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 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 "context-def.hh"
19 Translator_group::Translator_group (Translator_group const&s)
24 Scheme_hash_table * tab = new Scheme_hash_table (*s.properties_dict ());
25 properties_scm_ = tab->self_scm ();
26 scm_gc_unprotect_object (tab->self_scm ());
30 Translator_group::properties_dict () const
32 return Scheme_hash_table::unsmob (properties_scm_);
35 Translator_group::~Translator_group ()
38 //assert (is_removable ());
42 Translator_group::Translator_group ()
45 Scheme_hash_table *tab = new Scheme_hash_table ;
46 properties_scm_ = tab->self_scm ();
48 scm_gc_unprotect_object (tab->self_scm ());
52 Translator_group::check_removal ()
55 for (SCM p = trans_group_list_; gh_pair_p (p); p = next)
59 Translator_group *trg = dynamic_cast<Translator_group*> (unsmob_translator (ly_car (p)));
61 trg->check_removal ();
62 if (trg->is_removable ())
63 terminate_translator (trg);
68 Translator_group::add_translator (SCM list, Translator *t)
71 Must append, since list ordering must be preserved.
73 list = gh_append2 (list, gh_cons (t->self_scm (), SCM_EOL));
74 t->daddy_trans_ = this;
75 t->output_def_ = output_def_;
82 Translator_group::add_used_group_translator (Translator *t)
84 trans_group_list_ = add_translator (trans_group_list_,t);
89 Translator_group::add_fresh_group_translator (Translator*t)
91 Translator_group*tg = dynamic_cast<Translator_group*> (t);
92 trans_group_list_ = add_translator (trans_group_list_,t);
93 scm_gc_unprotect_object (t->self_scm ());
95 Context_def * td = unsmob_context_def (tg->definition_);
98 this can not move before add_translator(), because \override
99 operations require that we are in the hierarchy.
101 td->apply_default_property_operations (tg);
107 Translator_group::try_music (Music* m)
109 bool hebbes_b = try_music_on_nongroup_children (m);
111 if (!hebbes_b && daddy_trans_)
112 hebbes_b = daddy_trans_->try_music (m);
118 Translator_group::terminate_translator (Translator*r)
122 Return value ignored. GC does the rest.
124 remove_translator (r);
129 Remove a translator from the hierarchy.
132 Translator_group::remove_translator (Translator*trans)
136 trans_group_list_ = scm_delq_x (trans->self_scm (), trans_group_list_);
137 trans->daddy_trans_ = 0;
143 static_each (SCM list, Method_pointer method)
145 for (SCM p = list; gh_pair_p (p); p = ly_cdr (p))
146 (unsmob_translator (ly_car (p))->*method) ();
151 Translator_group::each (Method_pointer method)
153 static_each (get_simple_trans_list (), method);
154 static_each (trans_group_list_, method);
164 Translator_group::stop_translation_timestep ()
166 each (&Translator::stop_translation_timestep);
170 Translator_group::start_translation_timestep ()
172 each (&Translator::start_translation_timestep);
176 Translator_group::do_announces ()
178 each (&Translator::do_announces);
182 Translator_group::initialize ()
184 SCM tab = scm_make_vector (gh_int2scm (19), SCM_BOOL_F);
185 set_property ("acceptHashTable", tab);
186 each (&Translator::initialize);
190 Translator_group::finalize ()
192 each (&Translator::finalize);
196 translator_accepts_any_of (Translator*tr, SCM ifaces)
198 SCM ack_ifs = scm_assoc (ly_symbol2scm ("events-accepted"),
199 tr->translator_description());
200 ack_ifs = gh_cdr (ack_ifs);
201 for (SCM s = ifaces; ly_pair_p (s); s = ly_cdr (s))
202 if (scm_memq (ly_car (s), ack_ifs) != SCM_BOOL_F)
208 find_accept_translators (SCM gravlist, SCM ifaces)
211 for (SCM s = gravlist; ly_pair_p (s); s = ly_cdr (s))
213 Translator* tr = unsmob_translator (ly_car (s));
214 if (translator_accepts_any_of (tr, ifaces))
215 l = scm_cons (tr->self_scm (), l);
217 l = scm_reverse_x (l, SCM_EOL);
223 Translator_group::try_music_on_nongroup_children (Music *m )
225 SCM tab = get_property ("acceptHashTable");
226 SCM name = scm_sloppy_assq (ly_symbol2scm ("name"),
227 m->get_property_alist (false));
229 if (!gh_pair_p (name))
232 name = gh_cdr (name);
233 SCM accept_list = scm_hashq_ref (tab, name, SCM_UNDEFINED);
234 if (accept_list == SCM_BOOL_F)
236 accept_list = find_accept_translators (get_simple_trans_list (),
237 m->get_mus_property ("types"));
238 scm_hashq_set_x (tab, name, accept_list);
241 for (SCM p = accept_list; gh_pair_p (p); p = ly_cdr (p))
243 Translator * t = unsmob_translator (ly_car (p));
244 if (t && t->try_music (m))
251 Translator_group::properties_as_alist () const
253 return properties_dict()->to_alist();
257 Translator_group::context_name () const
259 Context_def * td = unsmob_context_def (definition_ );
260 return ly_symbol2string (td->get_context_name ());
266 names_to_translators (SCM namelist, Translator_group*tg)
269 for (SCM s = namelist; gh_pair_p (s) ; s = ly_cdr (s))
271 Translator * t = get_translator (ly_car (s));
273 warning (_f ("can't find: `%s'", s));
276 Translator * tr = t->clone ();
277 SCM str = tr->self_scm ();
278 l = gh_cons (str, l);
280 tr->daddy_trans_ = tg;
281 tr->output_def_ = tg->output_def_;
283 scm_gc_unprotect_object (str);
291 Translator_group::get_simple_trans_list ()
293 return simple_trans_list_;