''

[lilypond.git] / lily / property-iterator.cc

diff --git a/lily/property-iterator.cc b/lily/property-iterator.cc
index 3799ba0e2f514d675238a1fe28f24921817efbaa..7b2dddb1da8d22da6d2946910fee11a6c37b84b2 100644 (file)
--- a/lily/property-iterator.cc
+++ b/lily/property-iterator.cc
@@ -3,7 +3,7 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--2000 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c)  1997--2002 Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 #include "property-iterator.hh"
@@ -11,37 +11,93 @@
 #include "translator-def.hh"
 #include "translator-group.hh"
 
+
+bool check_grob(Music *mus, SCM sym);
+
 /**
-  There is no real processing to a property: just lookup the
-  translation unit, and set the property.
-  */
+   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))
-    report_to_l ()->set_property (sym, music_l_->get_mus_property ("value"));
+  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
-Push_property_iterator::process (Moment m)
+Property_unset_iterator::process (Moment m)
 {
-  SCM syms = music_l_->get_mus_property ("symbols");
-  SCM eprop = music_l_->get_mus_property ("element-property");
-  SCM val = music_l_->get_mus_property ("element-value");
+  SCM sym = music_l ()->get_mus_property ("symbol");
+  type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));  
+  report_to_l ()->unset_property (sym);
 
-  Translator_def::apply_pushpop_property (report_to_l (), syms, eprop, val);
+  Simple_music_iterator::process (m);
+}
+
+
+SCM list_p = 0;
+
+bool
+check_grob(Music *mus, SCM sym)
+{
+  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
+Push_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");
+      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);
 }
 
 void
 Pop_property_iterator::process (Moment m)
 {
-  SCM syms = music_l_->get_mus_property ("symbols");
-  SCM eprop = music_l_->get_mus_property ("element-property");
-  Translator_def::apply_pushpop_property (report_to_l (), syms, eprop, SCM_UNDEFINED);
-  
+  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);