2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2012 Han-Wen Nienhuys <hanwen@xs4all.nl>
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/>.
21 #include "ly-smobs.icc"
25 DECLARE_SIMPLE_SMOBS (Undead);
28 SCM object () { return object_; }
29 Undead (SCM object = SCM_UNDEFINED) : object_ (object) { };
33 Undead::mark_smob (SCM s)
35 bool saved = parsed_objects_should_be_dead;
36 parsed_objects_should_be_dead = false;
37 scm_gc_mark (Undead::unsmob (s)->object ());
38 parsed_objects_should_be_dead = saved;
43 Undead::print_smob (SCM undead,
47 scm_puts ("#<Undead ", port);
48 scm_display (Undead::unsmob (undead)->object (), port);
49 scm_puts (" >", port);
53 IMPLEMENT_SIMPLE_SMOBS (Undead);
54 IMPLEMENT_DEFAULT_EQUAL_P (Undead);
55 IMPLEMENT_TYPE_P (Undead, "ly:undead?")
57 LY_DEFINE (ly_make_undead, "ly:make-undead",
58 1, 0, 0, (SCM object),
59 "This packages @var{object} in a manner that keeps it from"
60 " triggering \"Parsed object should be dead\" messages.")
62 Undead undead (object);
63 return undead.smobbed_copy ();
66 LY_DEFINE (ly_get_undead, "ly:get-undead",
67 1, 0, 0, (SCM undead),
68 "Get back object from @var{undead}.")
70 LY_ASSERT_SMOB (Undead, undead, 1);
71 return Undead::unsmob (undead)->object ();
75 // These are not protected since the means of protecting them would be
76 // problematic to trigger during the mark pass where the array element
77 // references get set. However, they get set only when in the mark
78 // pass when checking for parsed elements that should be dead, and we
79 // query and clear them immediately afterwards. So there should be no
80 // way in which the references would have become unprotected in the
83 vector<parsed_dead *> parsed_dead::elements;
86 parsed_dead::readout ()
89 for (vsize i = 0; i < elements.size (); i++)
91 SCM elt = elements[i]->readout_one ();
92 if (!SCM_UNBNDP (elt))
93 result = scm_cons (elt, result);
98 LY_DEFINE (ly_parsed_undead_list_x, "ly:parsed-undead-list!",
100 "Return the list of objects that have been found live"
101 " that should have been dead, and clear that list.")
103 return parsed_dead::readout ();