/*
- music-wrapper-iterator.cc -- implement Music_wrapper_iterator
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 1998--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ 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/>.
*/
#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
Music_wrapper_iterator::construct_children ()
{
Music *my_music = get_music ();
- Music *child = unsmob_music (my_music->get_property ("element"));
- child_iter_ = unsmob_iterator (get_iterator (child));
+ Music *child = unsmob<Music> (my_music->get_property ("element"));
+ child_iter_ = (child)
+ ? unsmob<Music_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 ();
+ if (child_iter_)
+ return child_iter_->pending_moment ();
+ else
+ return Music_iterator::pending_moment ();
}
-Music_iterator *
-Music_wrapper_iterator::try_music_in_children (Music *m) const
+Context *
+Music_wrapper_iterator::get_outlet () const
{
- return child_iter_->try_music (m);
+ if (child_iter_)
+ return child_iter_->get_outlet ();
+ return Music_iterator::get_outlet ();
+}
+
+void
+Music_wrapper_iterator::set_context (Context *trans)
+{
+ if (child_iter_)
+ child_iter_->set_context (trans);
+ Music_iterator::set_context (trans);
}
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 ());
}