2 property-iterator.cc -- implement Property_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2003 Han-Wen Nienhuys <hanwen@cs.uu.nl>
9 #include "property-iterator.hh"
11 #include "translator-def.hh"
12 #include "translator-group.hh"
13 #include "global-translator.hh"
16 bool check_grob(Music *mus, SCM sym);
19 There is no real processing to a property: just lookup the
20 translation unit, and set the property.
23 Property_iterator::process (Moment m)
25 SCM sym = get_music ()->get_mus_property ("symbol");
26 if (gh_symbol_p (sym))
28 SCM val = get_music ()->get_mus_property ("value");
31 ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
33 report_to ()->internal_set_property (sym, val);
35 Simple_music_iterator::process (m);
39 Property_unset_iterator::process (Moment m)
41 SCM sym = get_music ()->get_mus_property ("symbol");
42 type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));
43 report_to ()->unset_property (sym);
45 Simple_music_iterator::process (m);
48 MAKE_SCHEME_CALLBACK(Property_iterator,once_finalization, 2);
50 Property_iterator::once_finalization(SCM translator, SCM music )
52 Music * m = unsmob_music (music);
54 = dynamic_cast<Translator_group*> (unsmob_translator (translator));
55 SCM sym = m->get_mus_property ("symbol");
57 tg->unset_property (sym);
58 return SCM_UNSPECIFIED;
62 Property_iterator::do_quit ()
64 if (to_boolean (get_music ()->get_mus_property ("once")))
66 SCM trans = report_to()->self_scm();
67 SCM music = get_music()->self_scm();
69 Global_translator * tg= report_to()->top_translator ();
71 tg->add_finalization (scm_list_n (once_finalization_proc,
72 trans, music, SCM_UNDEFINED));
80 check_grob(Music *mus, SCM sym)
84 list_p = gh_eval_str ("list?");
88 SCM type = scm_object_property (sym, ly_symbol2scm ("translation-type?"));
89 bool ok = type == list_p;
93 mus->origin()->warning (_f("Not a grob name, `%s'." , ly_symbol2string (sym)));
99 Push_property_iterator::process (Moment m)
101 SCM sym = get_music ()->get_mus_property ("symbol");
102 if (check_grob (get_music (), sym))
104 SCM eprop = get_music ()->get_mus_property ("grob-property");
105 SCM val = get_music ()->get_mus_property ("grob-value");
107 if (to_boolean (get_music ()->get_mus_property ("pop-first"))
108 && !to_boolean (get_music ()->get_mus_property ("once"))
110 Translator_def::apply_pushpop_property (report_to (),
111 sym, eprop, SCM_UNDEFINED);
113 Translator_def::apply_pushpop_property (report_to (), sym, eprop, val);
115 Simple_music_iterator::process (m);
118 MAKE_SCHEME_CALLBACK(Push_property_iterator,once_finalization, 2);
120 Push_property_iterator::once_finalization (SCM trans, SCM music)
122 Music * mus = unsmob_music (music);
124 = dynamic_cast<Translator_group*> (unsmob_translator (trans));
126 SCM sym = mus->get_mus_property ("symbol");
127 if (check_grob (mus, sym))
129 SCM eprop = mus->get_mus_property ("grob-property");
131 Translator_def::apply_pushpop_property (tg, sym, eprop, SCM_UNDEFINED);
133 return SCM_UNSPECIFIED;
137 Push_property_iterator::do_quit ()
139 if (to_boolean (get_music ()->get_mus_property ("once")))
141 SCM trans = report_to()->self_scm();
142 SCM music = get_music ()->self_scm();
144 Global_translator * tg= report_to()->top_translator ();
145 tg->add_finalization (scm_list_n (once_finalization_proc,
146 trans, music, SCM_UNDEFINED));
151 Pop_property_iterator::process (Moment m)
153 SCM sym = get_music ()->get_mus_property ("symbol");
154 if (check_grob (get_music (), sym))
156 SCM eprop = get_music ()->get_mus_property ("grob-property");
157 Translator_def::apply_pushpop_property (report_to (), sym, eprop, SCM_UNDEFINED);
159 Simple_music_iterator::process (m);
164 IMPLEMENT_CTOR_CALLBACK (Pop_property_iterator);
165 IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
166 IMPLEMENT_CTOR_CALLBACK (Property_iterator);
167 IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);