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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 1999--2015 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 "repeated-music.hh"
#include "music-sequence.hh"
#include "pitch.hh"
#include "warn.hh"
#include "program-option.hh"
Music *
Repeated_music::body (Music *me)
{
return unsmob<Music> (me->get_property ("element"));
}
SCM
Repeated_music::alternatives (Music *me)
{
return me->get_property ("elements");
}
Moment
Repeated_music::alternatives_get_length (Music *me, bool fold)
{
SCM alternative_list = alternatives (me);
int len = scm_ilength (alternative_list);
if (len <= 0)
return 0;
if (fold)
return Music_sequence::maximum_length (alternative_list);
Moment m = 0;
int done = 0;
int count = robust_scm2int (me->get_property ("repeat-count"), 0);
SCM p = alternative_list;
while (scm_is_pair (p) && done < count)
{
m = m + unsmob<Music> (scm_car (p))->get_length ();
done++;
if (count - done < len)
p = scm_cdr (p);
}
return m;
}
/*
Sum all duration of all available alternatives. This is for the case
of volta repeats, where the alternatives are iterated just as they
were entered. */
Moment
Repeated_music::alternatives_volta_get_length (Music *me)
{
return Music_sequence::cumulative_length (alternatives (me));
}
/*
Length of the body in THIS. Disregards REPEAT-COUNT.
*/
Moment
Repeated_music::body_get_length (Music *me)
{
Moment m = 0;
if (Music *body = unsmob<Music> (me->get_property ("element")))
m = body->get_length ();
return m;
}
MAKE_SCHEME_CALLBACK (Repeated_music, unfolded_music_length, 1);
SCM
Repeated_music::unfolded_music_length (SCM m)
{
Music *me = unsmob<Music> (m);
Moment l = Moment (repeat_count (me)) * body_get_length (me) + alternatives_get_length (me, false);
return l.smobbed_copy ();
}
MAKE_SCHEME_CALLBACK (Repeated_music, folded_music_length, 1);
SCM
Repeated_music::folded_music_length (SCM m)
{
Music *me = unsmob<Music> (m);
Moment l = body_get_length (me) + alternatives_get_length (me, true);
return l.smobbed_copy ();
}
int
Repeated_music::repeat_count (Music *me)
{
return scm_to_int (me->get_property ("repeat-count"));
}
MAKE_SCHEME_CALLBACK (Repeated_music, volta_music_length, 1);
SCM
Repeated_music::volta_music_length (SCM m)
{
Music *me = unsmob<Music> (m);
Moment l = body_get_length (me) + alternatives_volta_get_length (me);
return l.smobbed_copy ();
}
MAKE_SCHEME_CALLBACK (Repeated_music, minimum_start, 1);
SCM
Repeated_music::minimum_start (SCM m)
{
Music *me = unsmob<Music> (m);
Music *body = unsmob<Music> (me->get_property ("element"));
if (body)
return body->start_mom ().smobbed_copy ();
else
return Music_sequence::minimum_start (me->get_property ("elements")).smobbed_copy ();
}
MAKE_SCHEME_CALLBACK (Repeated_music, first_start, 1);
SCM
Repeated_music::first_start (SCM m)
{
Music *me = unsmob<Music> (m);
Music *body = unsmob<Music> (me->get_property ("element"));
Moment rv = (body) ? body->start_mom ()
: Music_sequence::first_start (me->get_property ("elements"));
return rv.smobbed_copy ();
}
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