2 stream-event.cc -- implement Scheme bindings for Stream_event
4 source file of the GNU LilyPond music typesetter
6 (c) 2006--2007 Erik Sandberg <mandolaerik@gmail.com>
9 #include "stream-event.hh"
11 LY_DEFINE (ly_make_stream_event, "ly:make-stream-event",
12 1, 1, 0, (SCM cl, SCM proplist),
13 "Creates a stream event of class @var{cl} with the given mutable property list.\n" )
15 LY_ASSERT_TYPE (ly_is_symbol, cl, 1);
17 /* should be scm_list_p, but scm_list_p is expensive. */
18 LY_ASSERT_TYPE (scm_is_pair, proplist, 2);
20 if (proplist == SCM_UNDEFINED)
23 Stream_event *e = new Stream_event (cl, proplist);
24 return e->unprotect ();
27 LY_DEFINE (ly_event_property, "ly:event-property",
28 2, 0, 0, (SCM sev, SCM sym),
29 "Get the property @var{sym} of stream event @var{mus}.\n"
30 "If @var{sym} is undefined, return @code{'()}.\n")
32 LY_ASSERT_SMOB (Stream_event, sev, 1);
33 LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
35 Stream_event *e = unsmob_stream_event (sev);
37 return e->internal_get_property (sym);
40 LY_DEFINE (ly_event_set_property_x, "ly:event-set-property!",
41 3, 0, 0, (SCM ev, SCM sym, SCM val),
42 "Set property @var{sym} in event @var{ev} to @var{val}.")
44 LY_ASSERT_SMOB (Stream_event, ev, 1);
45 LY_ASSERT_TYPE (ly_is_symbol, sym, 2);
47 return ly_prob_set_property_x (ev, sym, val);
50 LY_DEFINE (ly_event_deep_copy, "ly:event-deep-copy",
52 "Copy @var{m} and all sub expressions of @var{m}")
55 if (Stream_event *ev = unsmob_stream_event (m))
58 copy = ev->unprotect ();
60 else if (scm_is_pair (m))
61 copy = scm_cons (ly_event_deep_copy (scm_car (m)),
62 ly_event_deep_copy (scm_cdr (m)));