2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2010 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/>.
20 #include "protected-scm.hh"
22 Protected_scm::Protected_scm ()
24 object_
= SCM_UNDEFINED
;
27 Protected_scm::Protected_scm (SCM s
)
29 object_
= SCM_NIMP (s
) ? scm_gc_protect_object (s
) : s
;
32 Protected_scm::Protected_scm (Protected_scm
const &s
)
34 object_
= (SCM_NIMP (s
.object_
) ? scm_gc_protect_object (s
.object_
)
38 Protected_scm::~Protected_scm ()
40 if (SCM_NIMP (object_
))
41 scm_gc_unprotect_object (object_
);
45 Protected_scm::operator = (SCM s
)
50 if (SCM_NIMP (object_
))
51 scm_gc_unprotect_object (object_
);
53 object_
= SCM_NIMP (s
) ? scm_gc_protect_object (s
) : s
;
58 Protected_scm::operator = (Protected_scm
const &s
)
60 return operator = (s
.object_
);
63 Protected_scm::operator SCM () const
69 Protected_scm::to_SCM () const