2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2002--2011 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/>.
21 #include "sequential-iterator.hh"
24 class Volta_repeat_iterator
: public Sequential_iterator
27 DECLARE_SCHEME_CALLBACK (constructor
, ());
28 Volta_repeat_iterator ();
30 void add_repeat_command (SCM
);
32 virtual SCM
get_music_list () const;
33 virtual void next_element (bool);
34 virtual void construct_children ();
35 virtual void process (Moment
);
43 Volta_repeat_iterator::Volta_repeat_iterator ()
45 done_count_
= alt_count_
= rep_count_
= 0;
50 Volta_repeat_iterator::get_music_list ()const
52 return scm_cons (get_music ()->get_property ("element"),
53 get_music ()->get_property ("elements"));
57 Volta_repeat_iterator::construct_children ()
59 Sequential_iterator::construct_children ();
61 SCM alts
= get_music ()->get_property ("elements");
63 alt_count_
= scm_ilength (alts
);
64 rep_count_
= scm_to_int (get_music ()->get_property ("repeat-count"));
69 TODO: add source information for debugging
72 Volta_repeat_iterator::add_repeat_command (SCM what
)
74 SCM reps
= ly_symbol2scm ("repeatCommands");
75 SCM current_reps
= SCM_EOL
;
76 Context
*where
= get_outlet ()->where_defined (reps
, ¤t_reps
);
79 && (current_reps
== SCM_EOL
|| scm_is_pair (current_reps
)))
81 current_reps
= scm_cons (what
, current_reps
);
82 where
->set_property (reps
, current_reps
);
87 Volta_repeat_iterator::next_element (bool side_effect
)
91 Sequential_iterator::next_element (side_effect
);
97 string repstr
= to_string (rep_count_
- alt_count_
+ done_count_
) + ".";
100 add_repeat_command (scm_list_n (ly_symbol2scm ("volta"), SCM_BOOL_F
, SCM_UNDEFINED
));
102 if (done_count_
- 1 < alt_count_
)
103 add_repeat_command (ly_symbol2scm ("end-repeat"));
106 if (done_count_
== 1 && alt_count_
< rep_count_
)
107 repstr
= "1.--" + to_string (rep_count_
- alt_count_
+ done_count_
) + ".";
109 if (done_count_
<= alt_count_
)
110 add_repeat_command (scm_list_n (ly_symbol2scm ("volta"),
111 ly_string2scm (repstr
), SCM_UNDEFINED
));
114 add_repeat_command (ly_symbol2scm ("end-repeat"));
119 Volta_repeat_iterator::process (Moment m
)
123 add_repeat_command (ly_symbol2scm ("start-repeat"));
126 Sequential_iterator::process (m
);
129 IMPLEMENT_CTOR_CALLBACK (Volta_repeat_iterator
);