source file of the GNU LilyPond music typesetter
- (c) 1998--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1998--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "music-wrapper-iterator.hh"
#include "music-wrapper.hh"
+#include "music.hh"
Music_wrapper_iterator::Music_wrapper_iterator ()
{
void
Music_wrapper_iterator::do_quit ()
{
- child_iter_->quit ();
+ if (child_iter_)
+ child_iter_->quit ();
}
void
void
Music_wrapper_iterator::construct_children ()
{
- Music *m = dynamic_cast<Music_wrapper const *> (get_music ())->element ();
- child_iter_ = unsmob_iterator (get_iterator (m));
+ Music *my_music = get_music ();
+ Music *child = unsmob_music (my_music->get_property ("element"));
+ child_iter_ = (child)
+ ? unsmob_iterator (get_iterator (child))
+ : 0;
}
bool
void
Music_wrapper_iterator::process (Moment m)
{
- child_iter_->process (m);
+ if (child_iter_)
+ child_iter_->process (m);
}
Moment
Music_wrapper_iterator::pending_moment () const
{
- return child_iter_->pending_moment ();
-}
-
-Music_iterator *
-Music_wrapper_iterator::try_music_in_children (Music *m) const
-{
- return child_iter_->try_music (m);
+ if (child_iter_)
+ return child_iter_->pending_moment ();
+ else
+ return Music_iterator::pending_moment ();
}
IMPLEMENT_CTOR_CALLBACK (Music_wrapper_iterator);
bool
Music_wrapper_iterator::run_always () const
{
- return child_iter_->run_always ();
+ return (child_iter_ && child_iter_->run_always ());
}