[Olena-patches] 962: Add metalic unconst.

https://svn.lrde.epita.fr/svn/oln/trunk/metalic Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Add metalic unconst. * mlc/unconst.hh: New. unconst.hh | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 72 insertions(+) Index: mlc/unconst.hh --- mlc/unconst.hh (revision 0) +++ mlc/unconst.hh (revision 0) @@ -0,0 +1,72 @@ +// Copyright (C) 2007 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 +// General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef MLC_UNCONST_HH +# define MLC_UNCONST_HH + + + +/// Macro mlc_unconst(T). + +# define mlc_unconst(T) typename mlc::unconst_< T >::ret + + + +namespace mlc +{ + + template <typename T> + struct unconst_ + { + typedef T ret; + }; + + template <typename T> + struct unconst_< const T > + { + typedef T ret; + }; + + + template <typename T> + T& unconst_cast(const T& obj) + { + return const_cast<T&>(obj); + } + + template <typename T> + T* unconst_cast(const T* ptr) + { + return const_cast<T*>(ptr); + } + + + +} // end of namespace mlc + + +#endif // ! MLC_UNCONST_HH