source file of the GNU LilyPond music typesetter
- (c) 1997--1998 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#include "property-iterator.hh"
-#include "translation-property.hh"
+#include "music.hh"
+#include "translator-def.hh"
#include "translator-group.hh"
-Property_iterator::Property_iterator (Translation_property *prop_l)
+
+bool check_grob(Music *mus, SCM sym);
+
+/**
+ There is no real processing to a property: just lookup the
+ translation unit, and set the property.
+*/
+void
+Property_iterator::process (Moment m)
+{
+ SCM sym = music_l ()->get_mus_property ("symbol");
+ if (gh_symbol_p (sym))
+ {
+ SCM val = music_l ()->get_mus_property ("value");
+ bool ok= true;
+ if (val != SCM_EOL)
+ ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
+ if (ok)
+ report_to_l ()->internal_set_property (sym, val);
+ }
+ Simple_music_iterator::process (m);
+}
+
+void
+Property_unset_iterator::process (Moment m)
+{
+ SCM sym = music_l ()->get_mus_property ("symbol");
+ type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));
+ report_to_l ()->unset_property (sym);
+
+ Simple_music_iterator::process (m);
+}
+
+
+SCM list_p = 0;
+
+bool
+check_grob(Music *mus, SCM sym)
{
- property_l_ = prop_l;
+ if (!list_p)
+ {
+ list_p = gh_eval_str ("list?");
+ }
+
+
+ SCM type_p = scm_object_property (sym, ly_symbol2scm ("translation-type?"));
+ bool ok = type_p == list_p;
+
+ if (!ok)
+ {
+ mus->origin()->warning (_f("Not a grob name, `%s'." , ly_symbol2string (sym)));
+ }
+ return ok;
}
void
-Property_iterator::process_and_next (Moment m)
+Push_property_iterator::process (Moment m)
{
- if (property_l_->var_str_.length_i ())
- report_to_l ()->set_property (property_l_->var_str_, property_l_->value_);
- Music_iterator::process_and_next (m);
+ SCM sym = music_l ()->get_mus_property ("symbol");
+ if (check_grob (music_l (), sym))
+ {
+ SCM eprop = music_l ()->get_mus_property ("grob-property");
+ SCM val = music_l ()->get_mus_property ("grob-value");
+
+ if (to_boolean (music_l ()->get_mus_property ("pop-first")))
+ Translator_def::apply_pushpop_property (report_to_l (),
+ sym, eprop, SCM_UNDEFINED);
+
+ Translator_def::apply_pushpop_property (report_to_l (), sym, eprop, val);
+ }
+ Simple_music_iterator::process (m);
}
-IMPLEMENT_IS_TYPE_B1(Property_iterator, Music_iterator);
+void
+Pop_property_iterator::process (Moment m)
+{
+ SCM sym = music_l ()->get_mus_property ("symbol");
+ if (check_grob (music_l (), sym))
+ {
+ SCM eprop = music_l ()->get_mus_property ("grob-property");
+ Translator_def::apply_pushpop_property (report_to_l (), sym, eprop, SCM_UNDEFINED);
+ }
+ Simple_music_iterator::process (m);
+}
+
+
+IMPLEMENT_CTOR_CALLBACK (Pop_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);