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/*
This file is part of LilyPond, the GNU music typesetter.
Copyright (C) 2006--2015 Erik Sandberg <mandolaerik@gmail.com>
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 "stream-event.hh"
LY_DEFINE (ly_stream_event_p, "ly:stream-event?",
1, 0, 0, (SCM obj),
"Is @code{@var{obj}} a @code{Stream_event} object?")
{
return scm_from_bool (unsmob<Stream_event> (obj));
}
LY_DEFINE (ly_make_stream_event, "ly:make-stream-event",
1, 1, 0, (SCM cl, SCM proplist),
"Create a stream event of class @var{cl} with the given"
" mutable property list.")
{
LY_ASSERT_TYPE (ly_is_pair, cl, 1);
/* should be scm_list_p, but scm_list_p is expensive. */
LY_ASSERT_TYPE (scm_is_pair, proplist, 2);
if (SCM_UNBNDP (proplist))
proplist = SCM_EOL;
Stream_event *e = new Stream_event (cl, proplist);
return e->unprotect ();
}
LY_DEFINE (ly_event_property, "ly:event-property",
2, 1, 0, (SCM sev, SCM sym, SCM val),
"Get the property @var{sym} of stream event @var{sev}."
" If @var{sym} is undefined, return @var{val} or"
" @code{'()} if @var{val} is not specified.")
{
LY_ASSERT_SMOB (Stream_event, sev, 1);
return ly_prob_property (sev, sym, val);
}
LY_DEFINE (ly_event_set_property_x, "ly:event-set-property!",
3, 0, 0, (SCM ev, SCM sym, SCM val),
"Set property @var{sym} in event @var{ev} to @var{val}.")
{
LY_ASSERT_SMOB (Stream_event, ev, 1);
LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
return ly_prob_set_property_x (ev, sym, val);
}
LY_DEFINE (ly_event_deep_copy, "ly:event-deep-copy",
1, 0, 0, (SCM m),
"Copy @var{m} and all sub expressions of@tie{}@var{m}.")
{
SCM copy = m;
if (Stream_event *ev = unsmob<Stream_event> (m))
{
ev = ev->clone ();
copy = ev->unprotect ();
}
else if (scm_is_pair (m))
copy = scm_cons (ly_event_deep_copy (scm_car (m)),
ly_event_deep_copy (scm_cdr (m)));
return copy;
}
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