2 translator-group.cc -- implement Translator_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>,
7 Erik Sandberg <mandolaerik@gmail.com>
10 #include "translator-group.hh"
12 #include "context-def.hh"
14 #include "dispatcher.hh"
17 #include "output-def.hh"
18 #include "scm-hash.hh"
19 #include "stream-event.hh"
23 Translator_group::get_daddy_translator () const
25 return context ()->get_parent_context ()->implementation ();
29 translator_each (SCM list, Translator_method method)
31 for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
32 (unsmob_translator (scm_car (p))->*method) ();
36 Translator_group::initialize ()
38 precompute_method_bindings ();
42 Translator_group::connect_to_context (Context *c)
45 programming_error ("already connected to a context");
47 c->event_source ()->add_listener (GET_LISTENER (eat_event), ly_symbol2scm ("MusicEvent"));
51 Translator_group::finalize ()
56 translator_accepts_any_of (Translator *tr, SCM ifaces)
58 SCM ack_ifs = scm_assoc (ly_symbol2scm ("events-accepted"),
59 tr->translator_description ());
60 ack_ifs = scm_cdr (ack_ifs);
61 for (SCM s = ifaces; scm_is_pair (s); s = scm_cdr (s))
62 if (scm_c_memq (scm_car (s), ack_ifs) != SCM_BOOL_F)
68 find_accept_translators (SCM gravlist, SCM ifaces)
71 for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s))
73 Translator *tr = unsmob_translator (scm_car (s));
74 if (translator_accepts_any_of (tr, ifaces))
75 l = scm_cons (tr->self_scm (), l);
77 l = scm_reverse_x (l, SCM_EOL);
82 IMPLEMENT_LISTENER (Translator_group, eat_event);
84 Translator_group::eat_event (SCM sev)
86 Stream_event *ev = unsmob_stream_event (sev);
87 SCM sm = ev->get_property ("music");
88 Music *m = unsmob_music (sm);
93 Translator_group::try_music (Music *m)
95 SCM name = scm_sloppy_assq (ly_symbol2scm ("name"),
96 m->get_property_alist (false));
98 if (!scm_is_pair (name))
101 name = scm_cdr (name);
102 SCM accept_list = scm_hashq_ref (accept_hash_table_, name, SCM_UNDEFINED);
103 if (accept_list == SCM_BOOL_F)
105 accept_list = find_accept_translators (get_simple_trans_list (),
106 m->get_property ("types"));
107 scm_hashq_set_x (accept_hash_table_, name, accept_list);
110 for (SCM p = accept_list; scm_is_pair (p); p = scm_cdr (p))
112 Translator *t = unsmob_translator (scm_car (p));
113 if (t && t->try_music (m))
120 Translator_group::get_simple_trans_list ()
122 return simple_trans_list_;
126 precomputed_recurse_over_translators (Context *c, Translator_precompute_index idx, Direction dir)
129 = dynamic_cast<Translator_group *> (c->implementation ());
133 tg->precomputed_translator_foreach (idx);
134 tg->call_precomputed_self_method (idx);
137 for (SCM s = c->children_contexts (); scm_is_pair (s);
139 precomputed_recurse_over_translators (unsmob_context (scm_car (s)), idx, dir);
143 tg->precomputed_translator_foreach (idx);
144 tg->call_precomputed_self_method (idx);
149 recurse_over_translators (Context *c, Translator_method ptr, Translator_group_method tg_ptr, Direction dir)
152 = dynamic_cast<Translator_group *> (c->implementation ());
157 translator_each (tg->get_simple_trans_list (), ptr);
160 for (SCM s = c->children_contexts (); scm_is_pair (s);
162 recurse_over_translators (unsmob_context (scm_car (s)), ptr, tg_ptr, dir);
166 translator_each (tg->get_simple_trans_list (),
173 Translator_group::Translator_group ()
175 simple_trans_list_ = SCM_EOL;
176 accept_hash_table_ = SCM_EOL;
180 accept_hash_table_ = scm_c_make_hash_table (19);
184 Translator_group::derived_mark () const
189 Translator_group::precompute_method_bindings ()
191 for (SCM s = simple_trans_list_; scm_is_pair (s); s = scm_cdr (s))
193 Translator *tr = unsmob_translator (scm_car (s));
194 Translator_void_method_ptr ptrs[TRANSLATOR_METHOD_PRECOMPUTE_COUNT];
195 tr->fetch_precomputable_methods (ptrs);
198 for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++)
201 precomputed_method_bindings_[i].push_back (Translator_method_binding (tr, ptrs[i]));
205 fetch_precomputable_methods (precomputed_self_method_bindings_);
209 Translator_group::precomputed_translator_foreach (Translator_precompute_index idx)
211 vector<Translator_method_binding> &bindings (precomputed_method_bindings_[idx]);
212 for (vsize i = 0; i < bindings.size (); i++)
213 bindings[i].invoke ();
217 Translator_group::fetch_precomputable_methods (Translator_group_void_method ptrs[])
219 for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++)
224 Translator_group::call_precomputed_self_method (Translator_precompute_index idx)
226 if (precomputed_self_method_bindings_[idx])
227 (*precomputed_self_method_bindings_[idx]) (this);
230 Translator_group::~Translator_group ()
234 #include "ly-smobs.icc"
236 IMPLEMENT_SMOBS (Translator_group);
237 IMPLEMENT_DEFAULT_EQUAL_P (Translator_group);
238 IMPLEMENT_TYPE_P (Translator_group, "ly:translator-group?");
241 Translator_group::print_smob (SCM s, SCM port, scm_print_state *)
243 Translator_group *me = (Translator_group *) SCM_CELL_WORD_1 (s);
244 scm_puts ("#<Translator_group ", port);
245 scm_puts (me->class_name (), port);
246 scm_display (me->simple_trans_list_, port);
247 scm_puts (" >", port);
252 Translator_group::mark_smob (SCM smob)
254 Translator_group *me = (Translator_group *)SCM_CELL_WORD_1 (smob);
257 scm_gc_mark (me->accept_hash_table_);
258 return me->simple_trans_list_;