Fix some bugs in the dynamic engraver and PostScript backend

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

diff --git a/lily/property-iterator.cc b/lily/property-iterator.cc
index 0af9420ebffb729a435fc4369b7e25d9f09462f9..a4c993b75644a943fa5ce77255385bf71793c367 100644 (file)
--- a/lily/property-iterator.cc
+++ b/lily/property-iterator.cc
@@ -3,23 +3,166 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+  (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #include "property-iterator.hh"
-#include "translation-property.hh"
-#include "translator-group.hh"
+
+#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.
-  */
+   There is no real processing to a property: just lookup the
+   translation unit, and set the property.
+*/
 void
-Property_iterator::do_process_and_next (Moment m)
+Property_iterator::process (Moment m)
 {
-  Translation_property const * prop = dynamic_cast<Translation_property const*> (music_l_);
-  if (prop->var_str_.length_i ())
-    report_to_l ()->set_property (prop->var_str_, prop->value_);
-  Music_iterator::do_process_and_next (m);
+  SCM sym = get_music ()->get_property ("symbol");
+  if (scm_is_symbol (sym))
+    {
+      SCM val = get_music ()->get_property ("value");
+      bool ok = true;
+      if (val != SCM_EOL)
+       ok = type_check_assignment (sym, val, ly_symbol2scm ("translation-type?"));
+      if (ok)
+       get_outlet ()->internal_set_property (sym, val);
+    }
+  Simple_music_iterator::process (m);
 }
 
+void
+Property_unset_iterator::process (Moment m)
+{
+  SCM sym = get_music ()->get_property ("symbol");
+  type_check_assignment (sym, SCM_EOL, ly_symbol2scm ("translation-type?"));
+  get_outlet ()->unset_property (sym);
+
+  Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Property_iterator, once_finalization, 2);
+SCM
+Property_iterator::once_finalization (SCM translator, SCM music)
+{
+  Music *m = unsmob_music (music);
+  Context *tg
+    = dynamic_cast<Context *> (unsmob_context (translator));
+  SCM sym = m->get_property ("symbol");
+
+  tg->unset_property (sym);
+  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")))
+       
+       execute_general_pushpop_property (get_outlet (), sym, grob_property_path, SCM_UNDEFINED);
+
+      execute_general_pushpop_property (get_outlet (), sym, grob_property_path, val);
+    }
+  Simple_music_iterator::process (m);
+}
+
+MAKE_SCHEME_CALLBACK (Push_property_iterator, once_finalization, 2);
+SCM
+Push_property_iterator::once_finalization (SCM trans, SCM music)
+{
+  Music *mus = unsmob_music (music);
+  Context *tg = dynamic_cast<Context *> (unsmob_context (trans));
+
+  SCM sym = mus->get_property ("symbol");
+  if (check_grob (mus, sym))
+    {
+      SCM grob_property_path = get_property_path (mus);
+
+      execute_general_pushpop_property (tg, sym, grob_property_path, SCM_UNDEFINED);
+    }
+  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 ());
+      execute_general_pushpop_property (get_outlet (), sym, grob_property_path, 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);
+