1 /*
2 This file is part of LilyPond, the GNU music typesetter.
3
4 Copyright (C) 2004--2020 Han-Wen Nienhuys <hanwen@xs4all.nl>
5
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
10
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "context.hh"
21 #include "input.hh"
22 #include "international.hh"
23 #include "music.hh"
24 #include "simple-music-iterator.hh"
25
26 class Apply_context_iterator final : public Simple_music_iterator
27 {
28 public:
29 DECLARE_SCHEME_CALLBACK (constructor, ());
30 protected:
31 void process (Moment) override;
32 };
33
34 void
process(Moment m)35 Apply_context_iterator::process (Moment m)
36 {
37 SCM proc = get_property (get_music (), "procedure");
38 if (ly_is_procedure (proc))
39 with_location (get_property (get_music (), "origin"),
40 proc, get_context ()->self_scm ());
41 else
42 warning (_ ("\\applycontext argument is not a procedure"));
43
44 Simple_music_iterator::process (m);
45 }
46
47 IMPLEMENT_CTOR_CALLBACK (Apply_context_iterator);
48
49