Branch data Line data Source code
1 : : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : : /*************************************************************************
3 : : *
4 : : * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 : : *
6 : : * Copyright 2000, 2010 Oracle and/or its affiliates.
7 : : *
8 : : * OpenOffice.org - a multi-platform office productivity suite
9 : : *
10 : : * This file is part of OpenOffice.org.
11 : : *
12 : : * OpenOffice.org is free software: you can redistribute it and/or modify
13 : : * it under the terms of the GNU Lesser General Public License version 3
14 : : * only, as published by the Free Software Foundation.
15 : : *
16 : : * OpenOffice.org is distributed in the hope that it will be useful,
17 : : * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 : : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 : : * GNU Lesser General Public License version 3 for more details
20 : : * (a copy is included in the LICENSE file that accompanied this code).
21 : : *
22 : : * You should have received a copy of the GNU Lesser General Public License
23 : : * version 3 along with OpenOffice.org. If not, see
24 : : * <http://www.openoffice.org/license.html>
25 : : * for a copy of the LGPLv3 License.
26 : : *
27 : : ************************************************************************/
28 : :
29 : : #ifndef WW_NEEDED_CAST_HXX
30 : : #define WW_NEEDED_CAST_HXX
31 : :
32 : : #include "staticassert.hxx"
33 : :
34 : : namespace ww
35 : : {
36 : 15060 : template<typename Ret, typename Param> Ret checking_cast(Param in, Ret)
37 : : {
38 : 15060 : return static_cast<Ret>(in);
39 : : }
40 : :
41 : : template<typename Ret> Ret checking_cast(Ret in, Ret)
42 : : {
43 : : OSL_ENSURE( false, "UnnecessaryCast" );
44 : : return in;
45 : : }
46 : :
47 : : /*
48 : : needed_cast is the same as static_cast except that there will be a compile
49 : : time assert when NDEBUG is not defined and the in and out types are the
50 : : same. i.e. needed_cast catches unneccessary casts
51 : : */
52 : 15060 : template<typename Ret, typename Param> Ret needed_cast(Param in)
53 : : {
54 : : /*
55 : : Massage a single argument and a ret value into two arguments to allow
56 : : a determination if the dest type is the same as the sourct type
57 : : */
58 : 15060 : return checking_cast(in, Ret());
59 : : }
60 : : }
61 : : #endif
62 : :
63 : : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|