2 property-iterator.cc -- implement Property_iterator
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
9 #include "property-iterator.hh"
11 #include "context-def.hh"
12 #include "global-context.hh"
13 #include "international.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_property ("symbol");
26 if (scm_is_symbol (sym))
28 SCM val = get_music ()->get_property ("value");
31 ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
33 get_outlet ()->internal_set_property (sym, val);
35 Simple_music_iterator::process (m);
39 Property_unset_iterator::process (Moment m)
41 SCM sym = get_music ()->get_property ("symbol");
42 type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));
43 get_outlet ()->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<Context *> (unsmob_context (translator));
55 SCM sym = m->get_property ("symbol");
57 tg->unset_property (sym);
58 return SCM_UNSPECIFIED;
62 Property_iterator::do_quit ()
64 if (to_boolean (get_music ()->get_property ("once")))
66 SCM trans = get_outlet ()->self_scm ();
67 SCM music = get_music ()->self_scm ();
69 Global_context *tg = get_outlet ()->get_global_context ();
70 tg->add_finalization (scm_list_n (once_finalization_proc,
71 trans, music, SCM_UNDEFINED));
76 check_grob (Music *mus, SCM sym)
78 bool g = to_boolean (scm_object_property (sym, ly_symbol2scm ("is-grob?")));
81 mus->origin ()->warning (_f ("not a grob name, `%s'",
82 ly_symbol2string (sym)));
88 get_property_path (Music *m)
90 SCM grob_property_path = m->get_property ("grob-property-path");
92 SCM eprop = m->get_property ("grob-property");
93 if (scm_is_symbol (eprop))
95 grob_property_path = scm_list_1 (eprop);
98 return grob_property_path;
102 Push_property_iterator::process (Moment m)
104 SCM sym = get_music ()->get_property ("symbol");
105 if (check_grob (get_music (), sym))
107 SCM grob_property_path = get_property_path (get_music ());
108 SCM val = get_music ()->get_property ("grob-value");
110 if (to_boolean (get_music ()->get_property ("pop-first"))
111 && !to_boolean (get_music ()->get_property ("once")))
113 execute_general_pushpop_property (get_outlet (), sym, grob_property_path, SCM_UNDEFINED);
115 execute_general_pushpop_property (get_outlet (), sym, grob_property_path, val);
117 Simple_music_iterator::process (m);
120 MAKE_SCHEME_CALLBACK (Push_property_iterator, once_finalization, 2);
122 Push_property_iterator::once_finalization (SCM trans, SCM music)
124 Music *mus = unsmob_music (music);
125 Context *tg = dynamic_cast<Context *> (unsmob_context (trans));
127 SCM sym = mus->get_property ("symbol");
128 if (check_grob (mus, sym))
130 SCM grob_property_path = get_property_path (mus);
132 execute_general_pushpop_property (tg, sym, grob_property_path, SCM_UNDEFINED);
134 return SCM_UNSPECIFIED;
138 Push_property_iterator::do_quit ()
140 if (to_boolean (get_music ()->get_property ("once")))
142 SCM trans = get_outlet ()->self_scm ();
143 SCM music = get_music ()->self_scm ();
145 Global_context *tg = get_outlet ()->get_global_context ();
146 tg->add_finalization (scm_list_n (once_finalization_proc,
147 trans, music, SCM_UNDEFINED));
152 Pop_property_iterator::process (Moment m)
154 SCM sym = get_music ()->get_property ("symbol");
156 if (check_grob (get_music (), sym))
158 SCM grob_property_path = get_property_path (get_music ());
159 execute_general_pushpop_property (get_outlet (), sym, grob_property_path, SCM_UNDEFINED);
161 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);