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 SCM tab = scm_make_vector (scm_int2num (19), SCM_BOOL_F);
36 context ()->set_property ("acceptHashTable", tab);
40 translator_accepts_any_of (Translator *tr, SCM ifaces)
42 SCM ack_ifs = scm_assoc (ly_symbol2scm ("events-accepted"),
43 tr->translator_description ());
44 ack_ifs = scm_cdr (ack_ifs);
45 for (SCM s = ifaces; scm_is_pair (s); s = scm_cdr (s))
46 if (scm_c_memq (scm_car (s), ack_ifs) != SCM_BOOL_F)
52 find_accept_translators (SCM gravlist, SCM ifaces)
55 for (SCM s = gravlist; scm_is_pair (s); s = scm_cdr (s))
57 Translator *tr = unsmob_translator (scm_car (s));
58 if (translator_accepts_any_of (tr, ifaces))
59 l = scm_cons (tr->self_scm (), l);
61 l = scm_reverse_x (l, SCM_EOL);
67 Translator_group::try_music (Music *m)
69 SCM tab = get_property ("acceptHashTable");
70 SCM name = scm_sloppy_assq (ly_symbol2scm ("name"),
71 m->get_property_alist (false));
73 if (!scm_is_pair (name))
76 name = scm_cdr (name);
77 SCM accept_list = scm_hashq_ref (tab, name, SCM_UNDEFINED);
78 if (accept_list == SCM_BOOL_F)
80 accept_list = find_accept_translators (get_simple_trans_list (),
81 m->get_property ("types"));
82 scm_hashq_set_x (tab, name, accept_list);
85 for (SCM p = accept_list; scm_is_pair (p); p = scm_cdr (p))
87 Translator *t = unsmob_translator (scm_car (p));
88 if (t && t->try_music (m))
95 Translator_group::get_simple_trans_list ()
97 return simple_trans_list_;
101 recurse_over_translators (Context *c, Translator_method ptr, Direction dir)
104 = dynamic_cast<Translator_group *> (c->implementation ());
111 translator_each (tg->get_simple_trans_list (),
117 for (SCM s = c->children_contexts (); scm_is_pair (s);
120 recurse_over_translators (unsmob_context (scm_car (s)), ptr, dir);
125 translator_each (tg->get_simple_trans_list (),
132 Translator_group::Translator_group ()
134 simple_trans_list_ = SCM_EOL;
138 Translator_group::derived_mark () const
140 scm_gc_mark (simple_trans_list_);