lily/context-specced-music-iterator.cc

   1 /*
   2   context-specced-music-iterator.cc -- implement
   3     Context_specced_music_iterator
   4
   5   source file of the GNU LilyPond music typesetter
   6
   7   (c) 2002--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
   8
   9 */
  10
  11 #include "music-wrapper-iterator.hh"
  12 #include "context.hh"
  13
  14 class Context_specced_music_iterator : public Music_wrapper_iterator
  15 {
  16 public:
  17   DECLARE_SCHEME_CALLBACK (constructor,());
  18   virtual void construct_children ();
  19 };
  20
  21 void
  22 Context_specced_music_iterator::construct_children ()
  23 {
  24   SCM ct = get_music ()->get_property ("context-type");
  25
  26   String c_id;
  27   SCM ci = get_music ()->get_property ("context-id");
  28   if (gh_string_p (ci))
  29     c_id = ly_scm2string (ci);
  30   SCM ops = get_music ()->get_property ("property-operations");
  31
  32   Context * a
  33     = get_outlet ()->find_create_context (ct, c_id, ops);
  34
  35   if (a
  36       && to_boolean (get_music ()->get_property ("descend-only"))
  37       && !is_child_context (get_outlet (), a))
  38     a = 0;
  39
  40   if (a)
  41     set_translator (a);
  42
  43   Music_wrapper_iterator::construct_children ();
  44 }
  45
  46 IMPLEMENT_CTOR_CALLBACK (Context_specced_music_iterator);