-/*
- music-wrapper.cc -- implement Music_wrapper
-
- source file of the GNU LilyPond music typesetter
-
- (c) 1998--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-
- */
+/*
+ This file is part of LilyPond, the GNU music typesetter.
-#include "music-wrapper.hh"
+ Copyright (C) 1998--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
-Music_wrapper::Music_wrapper (SCM x)
- : Music (x)
-{
- if (!ly_c_procedure_p (length_callback_))
- length_callback_ = length_callback_proc;
-}
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
+*/
-MAKE_SCHEME_CALLBACK(Music_wrapper,length_callback,1);
+#include "music-wrapper.hh"
+
+#include "music.hh"
+
+MAKE_SCHEME_CALLBACK (Music_wrapper, start_callback, 1);
SCM
-Music_wrapper::length_callback (SCM m)
+Music_wrapper::start_callback (SCM m)
{
- Music * me = unsmob_music (m);
+ Music *me = unsmob_music (m);
Music *elt = unsmob_music (me->get_property ("element"));
- return elt->get_length ().smobbed_copy ();
+ 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 ();
-}