5// This file is part of Spot, a model checking library.
6//
7// Spot is free software; you can redistribute it and/or modify it
8// under the terms of the GNU General Public License as published by
9// the Free Software Foundation; either version 3 of the License, or
10// (at your option) any later version.
11//
12// Spot is distributed in the hope that it will be useful, but WITHOUT
13// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15// License for more details.
16//
17// You should have received a copy of the GNU General Public License
18// along with this program. If not, see <http://www.gnu.org/licenses/>.
19
20#pragma once
21
22// We usually write code like
23// subclass* i = down_cast<subclass*>(m);
24// assert(i);
25// ... use i ...
26// When NDEBUG is set, the down_cast is a fast static_cast
27// and the assert has no effect.
28// Otherwise, the down_cast is a dynamic_cast and may return 0
29// on error, which the assert catches.
30
31#if NDEBUG
32# define down_cast static_cast
33#else
34# define down_cast dynamic_cast
35#endif
Please direct any question, comment, or bug report to the Spot mailing list at spot@lrde.epita.fr.
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