[Olena-patches] 653: Add basic function to remove '*', '&', "const", and "[]" from types.

2006-10-17 Thierry GERAUD &lt;theo(a)tegucigalpa.lrde.epita.fr&gt; Add basic function to remove '*', '&', "const", and "[]" from types. * mlc/basic.hh: New. * mlc/is_a.hh (mlc_is_a, mlc_is_a_): Use basic_ for T. (mlc_is_not_a, mlc_is_not_a_): Likewise. Index: mlc/basic.hh =================================================================== --- mlc/basic.hh (revision 0) +++ mlc/basic.hh (revision 653) @@ -0,0 +1,78 @@ +// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 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_BASIC_HH +# define MLC_BASIC_HH + + +/** \def mlc_basic(Type) + ** \brief Remove '*', '&', "const", and "[]" from \a Type. + ** + */ +# define mlc_basic(Type) typename mlc::basic_< Type >::ret +/// Likewise, without the leading \c typename keyword. +# define mlc_basic_(Type) mlc::basic_< Type >::ret + + + +namespace mlc +{ + + template <typename T> + struct basic_ + { + typedef T ret; + }; + + template <typename T> + struct basic_ < T*+ { + typedef typename basic_<T>::ret ret; + }; + + template <typename T> + struct basic_< T&+ { + typedef typename basic_<T>::ret ret; + }; + + template <typename T> + struct basic_< const T+ { + typedef typename basic_<T>::ret ret; + }; + + template <typename T> + struct basic_< T[]+ { + typedef typename basic_<T>::ret ret; + }; + +} // end of namespace mlc + + +#endif // ! MLC_BASIC_HH Index: mlc/is_a.hh =================================================================== --- mlc/is_a.hh (revision 652) +++ mlc/is_a.hh (revision 653) @@ -31,6 +31,7 @@ # include <mlc/bool.hh> # include <mlc/bexpr.hh> # include <mlc/wrap.hh> +# include <mlc/basic.hh> // private macro so do _not_ use it @@ -202,7 +203,6 @@ {}; }; - } // end of namespace mlc @@ -238,13 +238,13 @@ ** template < template < class, class > class > class */ -# define mlc_is_a(T, U) \ -mlc::wrap_< \ - typename mlc::is_a_< sizeof(mlc::form::of< U >()) >::template ret< T, U > \ +# define mlc_is_a(T, U) \ +mlc::wrap_< \ + typename mlc::is_a_< sizeof(mlc::form::of< U >()) >::template ret< typename mlc::basic_<T>::ret, U > \ # define mlc_is_a_(T, U) \ -mlc::is_a_< sizeof(mlc::form::of< U >()) >::ret< T, U+mlc::is_a_< sizeof(mlc::form::of< U >()) >::ret< mlc::basic_<T>::ret, U /*! \def mlc_is_not_a(T, U) @@ -255,13 +255,13 @@ ** \see mlc_is_a(T, U) */ -# define mlc_is_not_a(T, U) \ -mlc::not_< \ - typename mlc::is_a_<sizeof(mlc::form::of<U >())>::template ret< T, U > \ +# define mlc_is_not_a(T, U) \ +mlc::not_< \ + typename mlc::is_a_<sizeof(mlc::form::of<U >())>::template ret< typename mlc::basic_<T>::ret, U > \ # define mlc_is_not_a_(T, U) \ -mlc::not_< mlc::is_a_< sizeof(mlc::form::of<U >())>::ret< T, U >+mlc::not_< mlc::is_a_< sizeof(mlc::form::of<U >())>::ret< mlc::basic_<T>::ret, U > #endif // ! MLC_IS_A_HH