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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef INCLUDED_SW_SOURCE_FILTER_WW8_NEEDED_CAST_HXX
21 : #define INCLUDED_SW_SOURCE_FILTER_WW8_NEEDED_CAST_HXX
22 :
23 : #include "staticassert.hxx"
24 :
25 : namespace ww
26 : {
27 874 : template<typename Ret, typename Param> Ret checking_cast(Param in, Ret)
28 : {
29 874 : return static_cast<Ret>(in);
30 : }
31 :
32 : template<typename Ret> Ret checking_cast(Ret in, Ret)
33 : {
34 : OSL_ENSURE( false, "UnnecessaryCast" );
35 : return in;
36 : }
37 :
38 : /*
39 : needed_cast is the same as static_cast except that there will be a compile
40 : time assert when NDEBUG is not defined and the in and out types are the
41 : same. i.e. needed_cast catches unnecessary casts
42 : */
43 874 : template<typename Ret, typename Param> Ret needed_cast(Param in)
44 : {
45 : /*
46 : Massage a single argument and a ret value into two arguments to allow
47 : a determination if the dest type is the same as the sourct type
48 : */
49 874 : return checking_cast(in, Ret());
50 : }
51 : }
52 : #endif
53 :
54 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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