2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2006--2015 Erik Sandberg <mandolaerik@gmail.com>
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 "stream-event.hh"
22 LY_DEFINE (ly_stream_event_p, "ly:stream-event?",
24 "Is @code{@var{obj}} a @code{Stream_event} object?")
26 return scm_from_bool (unsmob<Stream_event> (obj));
29 LY_DEFINE (ly_make_stream_event, "ly:make-stream-event",
30 1, 1, 0, (SCM cl, SCM proplist),
31 "Create a stream event of class @var{cl} with the given"
32 " mutable property list.")
34 LY_ASSERT_TYPE (ly_is_pair, cl, 1);
36 /* should be scm_list_p, but scm_list_p is expensive. */
37 LY_ASSERT_TYPE (scm_is_pair, proplist, 2);
39 if (SCM_UNBNDP (proplist))
42 Stream_event *e = new Stream_event (cl, proplist);
43 return e->unprotect ();
46 LY_DEFINE (ly_event_property, "ly:event-property",
47 2, 1, 0, (SCM sev, SCM sym, SCM val),
48 "Get the property @var{sym} of stream event @var{sev}."
49 " If @var{sym} is undefined, return @var{val} or"
50 " @code{'()} if @var{val} is not specified.")
52 LY_ASSERT_SMOB (Stream_event, sev, 1);
53 return ly_prob_property (sev, sym, val);
56 LY_DEFINE (ly_event_set_property_x, "ly:event-set-property!",
57 3, 0, 0, (SCM ev, SCM sym, SCM val),
58 "Set property @var{sym} in event @var{ev} to @var{val}.")
60 LY_ASSERT_SMOB (Stream_event, ev, 1);
61 LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
63 return ly_prob_set_property_x (ev, sym, val);
66 LY_DEFINE (ly_event_deep_copy, "ly:event-deep-copy",
68 "Copy @var{m} and all sub expressions of@tie{}@var{m}.")
71 if (Stream_event *ev = unsmob<Stream_event> (m))
74 copy = ev->unprotect ();
76 else if (scm_is_pair (m))
77 copy = scm_cons (ly_event_deep_copy (scm_car (m)),
78 ly_event_deep_copy (scm_cdr (m)));