* The grand 2005-2006 replace.

[lilypond.git] / lily / pointer-group-interface.cc

diff --git a/lily/pointer-group-interface.cc b/lily/pointer-group-interface.cc
index def0d3701bdcf1ca45f45a1f19f7e037a9f74878..4daaff0595c30b2ee92c2bfd5c7bd8931c25ed3a 100644 (file)
--- a/lily/pointer-group-interface.cc
+++ b/lily/pointer-group-interface.cc
@@ -1,15 +1,67 @@
-/*   
-  group-interface.cc --  implement Pointer_group_interface
-  
+/*
+  pointer-group-interface.cc -- implement Pointer_group_interface
+
   source file of the GNU LilyPond music typesetter
-  
-  (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-  
- */
-#include "group-interface.hh"
+
+  (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
+
+#include "pointer-group-interface.hh"
+
+#include "lily-proto.hh"
+#include "item.hh"
+#include "grob-array.hh"
 #include "grob.hh"
 
+int
+Pointer_group_interface::count (Grob *me, SCM sym)
+{
+  Grob_array *arr = unsmob_grob_array (me->internal_get_object (sym));
+  return arr ? arr->size () : 0;
+}
+
+void
+Pointer_group_interface::add_grob (Grob *me, SCM sym, SCM p)
+{
+  add_grob (me, sym, unsmob_grob (p));
+}
+
+void
+Pointer_group_interface::add_grob (Grob *me, SCM sym, Grob *p)
+{
+  SCM scm_arr = me->internal_get_object (sym);
+  Grob_array *arr = unsmob_grob_array (scm_arr);
+  if (!arr)
+    {
+      scm_arr = Grob_array::make_array ();
+      arr = unsmob_grob_array (scm_arr);
+      me->internal_set_object (sym, scm_arr);
+    }
+  arr->add (p);
+}
+
+static Link_array<Grob> empty_array;
 
+Link_array<Grob> const &
+ly_scm2link_array (SCM x)
+{
+  Grob_array *arr = unsmob_grob_array (x);
+  return arr ? arr->array () : empty_array;
+}
 
+Link_array<Grob> const &
+internal_extract_grob_array (Grob const *elt, SCM symbol)
+{
+  return ly_scm2link_array (elt->internal_get_object (symbol));
+}
 
+Link_array<Item>
+internal_extract_item_array (Grob const *elt, SCM symbol)
+{
+  Grob_array *arr = unsmob_grob_array (elt->internal_get_object (symbol));
+  Link_array<Item> items;
+  for (int i = 0; arr && i < arr->size (); i++)
+    items.push (arr->item (i));
 
+  return items;
+}