2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
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.
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.
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/>.
20 #include "change-iterator.hh"
24 #include "international.hh"
29 Change_iterator::error (const string &reason)
31 string to_type = ly_symbol2string (get_music ()->get_property ("change-to-type"));
32 string to_id = ly_scm2string (get_music ()->get_property ("change-to-id"));
34 string warn1 = _f ("cannot change `%s' to `%s'", to_type, to_id)
40 string warn2 = "Change_iterator::process (): "
41 + get_outlet ()->context_name () + " = `"
42 + get_outlet ()->id_string () + "': ";
44 get_music ()->origin ()->warning (warn1);
48 Change_iterator::change_to (Music_iterator &it,
52 string result; // error message
54 // Find the context that should have its parent changed.
55 Context *last = find_context_above_by_parent_type (it.get_outlet (), to_type);
58 // Find the new parent.
59 Context *dest = find_context_near (it.get_outlet (), to_type, to_id);
62 send_stream_event (last, "ChangeParent", it.get_music ()->origin (),
63 ly_symbol2scm ("context"), dest->self_scm ());
66 /* FIXME: constant error message. */
67 it.get_music ()->origin ()->warning (_ ("cannot find context to switch to"));
69 else if (it.get_outlet ()->is_alias (to_type))
71 // No enclosing context was found because the iterator's immediate
72 // context is the kind that was sought.
73 /* We could change the current translator's id, but that would make
76 last->translator_id_string () = get_change
77 ()->change_to_id_string (); */
78 result = _f ("not changing to same context type: %s", ly_symbol2string (to_type).c_str ());
81 /* FIXME: incomprehensible message */
82 result = _ ("none of these in my family");
88 move to construct_children ?
91 Change_iterator::process (Moment m)
93 SCM to_type = get_music ()->get_property ("change-to-type");
94 string to_id = ly_scm2string (get_music ()->get_property ("change-to-id"));
96 string msg = change_to (*this, to_type, to_id);
100 Simple_music_iterator::process (m);
103 IMPLEMENT_CTOR_CALLBACK (Change_iterator);