2 translator-group.cc -- implement Translator_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "translator-group.hh"
11 #include "output-def.hh"
13 #include "scm-hash.hh"
14 #include "context-def.hh"
20 Translator_group::get_daddy_translator () const
22 return context ()->get_parent_context ()->implementation ();
26 translator_each (SCM list, Translator_method method)
28 for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
29 (unsmob_translator (scm_car (p))->*method) ();
33 Translator_group::initialize ()
35 precompute_method_bindings ();
39 Translator_group::finalize ()
44 translator_accepts_any_of (Translator *tr, SCM ifaces)
46 SCM ack_ifs = scm_assoc (ly_symbol2scm ("events-accepted"),
47 tr->translator_description ());
48 ack_ifs = scm_cdr (ack_ifs);
49 for (SCM s = ifaces; scm_is_pair (s); s = scm_cdr (s))
50 if (scm_c_memq (scm_car (s), ack_ifs) != SCM_BOOL_F)
56 find_accept_translators (SCM gravlist, SCM ifaces)
59 for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s))
61 Translator *tr = unsmob_translator (scm_car (s));
62 if (translator_accepts_any_of (tr, ifaces))
63 l = scm_cons (tr->self_scm (), l);
65 l = scm_reverse_x (l, SCM_EOL);
71 Translator_group::try_music (Music *m)
73 SCM name = scm_sloppy_assq (ly_symbol2scm ("name"),
74 m->get_property_alist (false));
76 if (!scm_is_pair (name))
79 name = scm_cdr (name);
80 SCM accept_list = scm_hashq_ref (accept_hash_table_, name, SCM_UNDEFINED);
81 if (accept_list == SCM_BOOL_F)
83 accept_list = find_accept_translators (get_simple_trans_list (),
84 m->get_property ("types"));
85 scm_hashq_set_x (accept_hash_table_, name, accept_list);
88 for (SCM p = accept_list; scm_is_pair (p); p = scm_cdr (p))
90 Translator *t = unsmob_translator (scm_car (p));
91 if (t && t->try_music (m))
98 Translator_group::get_simple_trans_list ()
100 return simple_trans_list_;
104 precomputed_recurse_over_translators (Context *c, Translator_precompute_index idx, Direction dir)
107 = dynamic_cast<Translator_group *> (c->implementation ());
111 tg->precomputed_translator_foreach (idx);
112 tg->call_precomputed_self_method (idx);
115 for (SCM s = c->children_contexts (); scm_is_pair (s);
117 precomputed_recurse_over_translators (unsmob_context (scm_car (s)), idx, dir);
121 tg->precomputed_translator_foreach (idx);
122 tg->call_precomputed_self_method (idx);
127 recurse_over_translators (Context *c, Translator_method ptr, Translator_group_method tg_ptr, Direction dir)
130 = dynamic_cast<Translator_group *> (c->implementation ());
135 translator_each (tg->get_simple_trans_list (), ptr);
138 for (SCM s = c->children_contexts (); scm_is_pair (s);
140 recurse_over_translators (unsmob_context (scm_car (s)), ptr, tg_ptr, dir);
144 translator_each (tg->get_simple_trans_list (),
151 Translator_group::Translator_group ()
153 simple_trans_list_ = SCM_EOL;
154 accept_hash_table_ = SCM_EOL;
158 accept_hash_table_ = scm_c_make_hash_table (19);
162 Translator_group::derived_mark () const
167 Translator_group::precompute_method_bindings ()
169 for (SCM s = simple_trans_list_; scm_is_pair (s); s = scm_cdr (s))
171 Translator *tr = unsmob_translator (scm_car (s));
172 Translator_void_method_ptr ptrs[TRANSLATOR_METHOD_PRECOMPUTE_COUNT];
173 tr->fetch_precomputable_methods (ptrs);
176 for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++)
179 precomputed_method_bindings_[i].push (Translator_method_binding (tr, ptrs[i]));
183 fetch_precomputable_methods (precomputed_self_method_bindings_);
187 Translator_group::precomputed_translator_foreach (Translator_precompute_index idx)
189 Array<Translator_method_binding> &bindings (precomputed_method_bindings_[idx]);
190 for (int i = 0; i < bindings.size (); i++)
191 bindings[i].invoke ();
195 Translator_group::fetch_precomputable_methods (Translator_group_void_method ptrs[])
197 for (int i = 0; i < TRANSLATOR_METHOD_PRECOMPUTE_COUNT; i++)
202 Translator_group::call_precomputed_self_method (Translator_precompute_index idx)
204 if (precomputed_self_method_bindings_[idx])
205 (*precomputed_self_method_bindings_[idx]) (this);
208 Translator_group::~Translator_group ()
212 #include "ly-smobs.icc"
214 IMPLEMENT_SMOBS (Translator_group);
215 IMPLEMENT_DEFAULT_EQUAL_P (Translator_group);
216 IMPLEMENT_TYPE_P (Translator_group, "ly:translator-group?");
219 Translator_group::print_smob (SCM s, SCM port, scm_print_state *)
221 Translator_group *me = (Translator_group *) SCM_CELL_WORD_1 (s);
222 scm_puts ("#<Translator_group ", port);
223 scm_puts (classname (me), port);
224 scm_display (me->simple_trans_list_, port);
225 scm_puts (" >", port);
230 Translator_group::mark_smob (SCM smob)
232 Translator_group *me = (Translator_group *)SCM_CELL_WORD_1 (smob);
235 scm_gc_mark (me->accept_hash_table_);
236 return me->simple_trans_list_;