X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fproperty-iterator.cc;h=97c76dfd7e5b5b82f1ce02186118981ac67a42c9;hb=5b4b0d6e9a197e8f9eb085b7c2ad78b8be3e5cfc;hp=2a191dead80b25da68f43f2a11fb4d3b8c8727ea;hpb=1edc2436a028cb2d1be8786ab0972a95b0985d42;p=lilypond.git

diff --git a/lily/property-iterator.cc b/lily/property-iterator.cc
index 2a191dead8..97c76dfd7e 100644
--- a/lily/property-iterator.cc
+++ b/lily/property-iterator.cc
@@ -3,24 +3,167 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+  (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "property-iterator.hh"
-#include "translation-property.hh"
-#include "translator-group.hh"
 
-Property_iterator::Property_iterator (Translation_property *prop_l)
+#include "context-def.hh"
+#include "global-context.hh"
+#include "international.hh"
+#include "music.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.
+*/
+void
+Property_iterator::process (Moment m)
 {
-  property_l_ = prop_l;
+  send_stream_event (get_outlet (), "SetProperty", get_music ()->origin (),
+		     ly_symbol2scm ("symbol"), get_music ()->get_property ("symbol"),
+		     ly_symbol2scm ("value"), get_music ()->get_property ("value"));
+  
+  Simple_music_iterator::process (m);
 }
 
 void
-Property_iterator::process_and_next (Moment m)
+Property_unset_iterator::process (Moment m)
+{
+  SCM sym = get_music ()->get_property ("symbol");
+  send_stream_event (get_outlet (), "UnsetProperty", get_music ()->origin (),
+		     ly_symbol2scm ("symbol"), sym);
+
+  Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Property_iterator, once_finalization, 2);
+SCM
+Property_iterator::once_finalization (SCM ctx, SCM music)
 {
-  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);
+  Music *m = unsmob_music (music);
+  Context *c = unsmob_context (ctx);
+
+  send_stream_event (c, "UnsetProperty", m->origin (),
+		     ly_symbol2scm ("symbol"), m->get_property ("symbol"));
+  return SCM_UNSPECIFIED;
+}
+
+void
+Property_iterator::do_quit ()
+{
+  if (to_boolean (get_music ()->get_property ("once")))
+    {
+      SCM trans = get_outlet ()->self_scm ();
+      SCM music = get_music ()->self_scm ();
+
+      Global_context *tg = get_outlet ()->get_global_context ();
+      tg->add_finalization (scm_list_n (once_finalization_proc,
+					trans, music, SCM_UNDEFINED));
+    }
+}
+
+bool
+check_grob (Music *mus, SCM sym)
+{
+  bool g = to_boolean (scm_object_property (sym, ly_symbol2scm ("is-grob?")));
+
+  if (!g)
+    mus->origin ()->warning (_f ("not a grob name, `%s'",
+				 ly_symbol2string (sym)));
+
+  return g;
+}
+
+SCM
+get_property_path (Music *m)
+{
+  SCM grob_property_path = m->get_property ("grob-property-path");
+
+  SCM eprop = m->get_property ("grob-property");
+  if (scm_is_symbol (eprop))
+    {
+      grob_property_path = scm_list_1 (eprop);
+    }
+
+  return grob_property_path;
+}
+
+void
+Push_property_iterator::process (Moment m)
+{
+  SCM sym = get_music ()->get_property ("symbol");
+  if (check_grob (get_music (), sym))
+    {
+      SCM grob_property_path = get_property_path (get_music ());
+      SCM val = get_music ()->get_property ("grob-value");
+
+      if (to_boolean (get_music ()->get_property ("pop-first"))
+	  && !to_boolean (get_music ()->get_property ("once")))
+	send_stream_event (get_outlet (), "Revert", get_music ()->origin (),
+			   ly_symbol2scm ("symbol"), sym,
+			   ly_symbol2scm ("property-path"), grob_property_path);
+			
+      send_stream_event (get_outlet (), "Override", get_music ()->origin (),
+			 ly_symbol2scm ("symbol"), sym,
+			 ly_symbol2scm ("property-path"), grob_property_path,
+			 ly_symbol2scm ("value"), val);
+    }
+  Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Push_property_iterator, once_finalization, 2);
+SCM
+Push_property_iterator::once_finalization (SCM ctx, SCM music)
+{
+  Music *mus = unsmob_music (music);
+  Context *c = unsmob_context (ctx);
+
+  SCM sym = mus->get_property ("symbol");
+  if (check_grob (mus, sym))
+    {
+      SCM grob_property_path = get_property_path (mus);
+
+      send_stream_event (c, "Revert", mus->origin (),
+			 ly_symbol2scm ("symbol"), sym,
+			 ly_symbol2scm ("property-path"), grob_property_path);
+    }
+  return SCM_UNSPECIFIED;
+}
+
+void
+Push_property_iterator::do_quit ()
+{
+  if (to_boolean (get_music ()->get_property ("once")))
+    {
+      SCM trans = get_outlet ()->self_scm ();
+      SCM music = get_music ()->self_scm ();
+
+      Global_context *tg = get_outlet ()->get_global_context ();
+      tg->add_finalization (scm_list_n (once_finalization_proc,
+					trans, music, SCM_UNDEFINED));
+    }
+}
+
+void
+Pop_property_iterator::process (Moment m)
+{
+  SCM sym = get_music ()->get_property ("symbol");
+
+  if (check_grob (get_music (), sym))
+    {
+      SCM grob_property_path = get_property_path (get_music ());
+
+      send_stream_event (get_outlet (), "Revert", get_music ()->origin (),
+			 ly_symbol2scm ("symbol"), sym,
+			 ly_symbol2scm ("property-path"), grob_property_path);
+    }
+  Simple_music_iterator::process (m);
 }
 
-IMPLEMENT_IS_TYPE_B1(Property_iterator, Music_iterator);
+IMPLEMENT_CTOR_CALLBACK (Pop_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Push_property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_iterator);
+IMPLEMENT_CTOR_CALLBACK (Property_unset_iterator);