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Diffstat (limited to 'sw/source/filter/ww8/needed_cast.hxx')
-rw-r--r-- | sw/source/filter/ww8/needed_cast.hxx | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sw/source/filter/ww8/needed_cast.hxx b/sw/source/filter/ww8/needed_cast.hxx new file mode 100644 index 000000000000..f240374883b5 --- /dev/null +++ b/sw/source/filter/ww8/needed_cast.hxx @@ -0,0 +1,63 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil -*- */ +#ifndef WW_NEEDED_CAST_HXX +#define WW_NEEDED_CAST_HXX + +#include <tools/debug.hxx> +# include "staticassert.hxx" + +namespace ww +{ + template<typename Ret, typename Param> Ret checking_cast(Param in, Ret) + { + return static_cast<Ret>(in); + } + + template<typename Ret> Ret checking_cast(Ret in, Ret) + { + DBG_ASSERT( false, "UnnecessaryCast" ); + return in; + } + + /* + needed_cast is the same as static_cast except that there will be a compile + time assert when NDEBUG is not defined and the in and out types are the + same. i.e. needed_cast catches unneccessary casts + */ + template<typename Ret, typename Param> Ret needed_cast(Param in) + { + /* + Massage a single argument and a ret value into two arguments to allow + a determination if the dest type is the same as the sourct type + */ + return checking_cast(in, Ret()); + } +} +#endif +/* vi:set tabstop=4 shiftwidth=4 expandtab: */ |