-/*
- music-wrapper.cc -- implement Music_wrapper
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+/*
+ music-wrapper.cc -- implement Music_wrapper
+ source file of the GNU LilyPond music typesetter
+ (c) 1998--2009 Han-Wen Nienhuys <hanwen@xs4all.nl>
+*/
#include "music-wrapper.hh"
+#include "music.hh"
-Music_wrapper::Music_wrapper ()
- : Music ()
-{
-}
-
-Moment
-Music_wrapper::get_length () const
+MAKE_SCHEME_CALLBACK (Music_wrapper, start_callback, 1);
+SCM
+Music_wrapper::start_callback (SCM m)
{
- return element ()->get_length ();
+ Music *me = unsmob_music (m);
+ Music *elt = unsmob_music (me->get_property ("element"));
+ if (elt)
+ return elt->start_mom ().smobbed_copy ();
+ else
+ return Moment ().smobbed_copy ();
}
-Music*
-Music_wrapper::element () const
+MAKE_SCHEME_CALLBACK (Music_wrapper, length_callback, 1);
+SCM
+Music_wrapper::length_callback (SCM m)
{
- return unsmob_music (get_property ("element"));
+ Music *me = unsmob_music (m);
+ Music *elt = unsmob_music (me->get_property ("element"));
+ if (elt)
+ return elt->get_length ().smobbed_copy ();
+ else
+ return Moment (0).smobbed_copy ();
}
-
-ADD_MUSIC (Music_wrapper);
-
-
-Moment
-Music_wrapper::start_mom () const
-{
- return element ()->start_mom ();
-}