2 stream-event.cc -- implement Stream_event
4 source file of the GNU LilyPond music typesetter
6 (c) 2005-2006 Erik Sandberg <mandolaerik@gmail.com>
9 #include "stream-event.hh"
11 #include "ly-smobs.icc"
14 #include "input-smob.hh"
16 Stream_event::Stream_event ()
17 : Prob (ly_symbol2scm ("Stream_event"), SCM_EOL)
21 Stream_event::Stream_event (SCM event_class, SCM mutable_props)
22 : Prob (ly_symbol2scm ("Stream_event"),
23 scm_list_1 (scm_cons (ly_symbol2scm ("class"), event_class)))
25 mutable_property_alist_ = mutable_props;
28 Stream_event::Stream_event (SCM property_alist)
29 : Prob (ly_symbol2scm ("Stream_event"), SCM_EOL)
31 mutable_property_alist_ = property_alist;
34 Stream_event::Stream_event (SCM class_name, Input *origin)
35 : Prob (ly_symbol2scm ("Stream_event"),
36 scm_list_1 (scm_cons (ly_symbol2scm ("class"), class_name)))
42 Stream_event::Stream_event (Stream_event *ev)
43 : Prob (ly_symbol2scm ("Stream_event"), SCM_EOL)
45 mutable_property_alist_ = scm_copy_tree (ev->mutable_property_alist_);
46 immutable_property_alist_ = ev->immutable_property_alist_;
50 Stream_event::origin () const
52 Input *i = unsmob_input (get_property ("origin"));
53 return i ? i : &dummy_input_global;
56 void Stream_event::set_spot (Input *i)
58 set_property ("origin", make_input (*i));
61 IMPLEMENT_TYPE_P (Stream_event, "ly:stream-event?");
63 MAKE_SCHEME_CALLBACK (Stream_event, undump, 1);
64 MAKE_SCHEME_CALLBACK (Stream_event, dump, 1);
67 Stream_event::dump (SCM self)
69 Stream_event *ev = unsmob_stream_event (self);
70 // Reversed alists look prettier.
71 return scm_cons (scm_reverse (ev->immutable_property_alist_),
72 scm_reverse (ev->mutable_property_alist_));
76 Stream_event::undump (SCM data)
78 Stream_event *obj = new Stream_event ();
79 obj->immutable_property_alist_ = scm_reverse (scm_car (data));
80 obj->mutable_property_alist_ = scm_reverse (scm_cdr (data));
81 return obj->unprotect ();
85 unsmob_stream_event (SCM m)
87 return dynamic_cast<Stream_event*> (unsmob_prob (m));