| // -*- C++ -*- |
| |
| // Copyright (C) 2005, 2006 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the terms |
| // of the GNU General Public License as published by the Free Software |
| // Foundation; either version 2, or (at your option) any later |
| // version. |
| |
| // 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, 59 Temple Place - Suite 330, 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. |
| |
| // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. |
| |
| // Permission to use, copy, modify, sell, and distribute this software |
| // is hereby granted without fee, provided that the above copyright |
| // notice appears in all copies, and that both that copyright notice |
| // and this permission notice appear in supporting documentation. None |
| // of the above authors, nor IBM Haifa Research Laboratories, make any |
| // representation about the suitability of this software for any |
| // purpose. It is provided "as is" without express or implied |
| // warranty. |
| |
| /** |
| * @file type_utils.hpp |
| * Contains utilities for handnling types. All of these classes are based on |
| * "Modern C++" by Andrei Alxandrescu. |
| */ |
| |
| #ifndef PB_DS_TYPE_UTILS_HPP |
| #define PB_DS_TYPE_UTILS_HPP |
| |
| #include <cstddef> |
| #include <utility> |
| #include <tr1/type_traits> |
| #include <ext/type_traits.h> |
| #include <ext/numeric_traits.h> |
| |
| namespace pb_ds |
| { |
| namespace detail |
| { |
| using std::tr1::is_same; |
| using std::tr1::is_const; |
| using std::tr1::is_pointer; |
| using std::tr1::is_reference; |
| using std::tr1::is_fundamental; |
| using std::tr1::is_member_object_pointer; |
| using std::tr1::is_member_pointer; |
| using std::tr1::is_base_of; |
| using std::tr1::remove_const; |
| using std::tr1::remove_reference; |
| |
| // Need integral_const<bool, true> <-> integral_const<int, 1>, so |
| // because of this use the following typedefs instead of importing |
| // std::tr1's. |
| using std::tr1::integral_constant; |
| typedef std::tr1::integral_constant<int, 1> true_type; |
| typedef std::tr1::integral_constant<int, 0> false_type; |
| |
| using __gnu_cxx::__conditional_type; |
| using __gnu_cxx::__numeric_traits; |
| |
| template<typename T> |
| struct is_const_pointer |
| { |
| enum |
| { |
| value = is_const<T>::value && is_pointer<T>::value |
| }; |
| }; |
| |
| template<typename T> |
| struct is_const_reference |
| { |
| enum |
| { |
| value = is_const<T>::value && is_reference<T>::value |
| }; |
| }; |
| |
| template<typename T> |
| struct is_simple |
| { |
| enum |
| { |
| value = is_fundamental<typename remove_const<T>::type>::value |
| || is_pointer<typename remove_const<T>::type>::value |
| || is_member_pointer<T>::value |
| }; |
| }; |
| |
| template<typename T> |
| class is_pair |
| { |
| private: |
| template<typename U> |
| struct is_pair_imp |
| { |
| enum |
| { |
| value = 0 |
| }; |
| }; |
| |
| template<typename U, typename V> |
| struct is_pair_imp<std::pair<U,V> > |
| { |
| enum |
| { |
| value = 1 |
| }; |
| }; |
| |
| public: |
| enum |
| { |
| value = is_pair_imp<T>::value |
| }; |
| }; |
| |
| |
| template<bool> |
| struct static_assert; |
| |
| template<> |
| struct static_assert<true> |
| { }; |
| |
| template<int> |
| struct static_assert_dumclass |
| { |
| enum |
| { |
| v = 1 |
| }; |
| }; |
| |
| template<typename Type> |
| struct type_to_type |
| { |
| typedef Type type; |
| }; |
| } // namespace detail |
| } // namespace pb_ds |
| |
| #endif |