3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the terms
7 // of the GNU General Public License as published by the Free Software
8 // Foundation; either version 2, or (at your option) any later
11 // This library is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this library; see the file COPYING. If not, write to
18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19 // MA 02111-1307, USA.
21 // As a special exception, you may use this file as part of a free
22 // software library without restriction. Specifically, if other files
23 // instantiate templates or use macros or inline functions from this
24 // file, or you compile this file and link it with other files to
25 // produce an executable, this file does not by itself cause the
26 // resulting executable to be covered by the GNU General Public
27 // License. This exception does not however invalidate any other
28 // reasons why the executable file might be covered by the GNU General
31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
33 // Permission to use, copy, modify, sell, and distribute this software
34 // is hereby granted without fee, provided that the above copyright
35 // notice appears in all copies, and that both that copyright notice
36 // and this permission notice appear in supporting documentation. None
37 // of the above authors, nor IBM Haifa Research Laboratories, make any
38 // representation about the suitability of this software for any
39 // purpose. It is provided "as is" without express or implied
43 * @file type_utils.hpp
44 * Contains utilities for handnling types. All of these classes are based on
45 * "Modern C++" by Andrei Alxandrescu.
48 #ifndef PB_DS_TYPE_UTILS_HPP
49 #define PB_DS_TYPE_UTILS_HPP
53 #include <tr1/type_traits>
54 #include <ext/type_traits.h>
55 #include <ext/numeric_traits.h>
61 using std::tr1::is_same;
62 using std::tr1::is_const;
63 using std::tr1::is_pointer;
64 using std::tr1::is_reference;
65 using std::tr1::is_fundamental;
66 using std::tr1::is_member_object_pointer;
67 using std::tr1::is_member_pointer;
68 using std::tr1::is_base_of;
69 using std::tr1::remove_const;
70 using std::tr1::remove_reference;
72 // Need integral_const<bool, true> <-> integral_const<int, 1>, so
73 // because of this use the following typedefs instead of importing
75 using std::tr1::integral_constant;
76 typedef std::tr1::integral_constant<int, 1> true_type;
77 typedef std::tr1::integral_constant<int, 0> false_type;
79 using __gnu_cxx::__conditional_type;
80 using __gnu_cxx::__numeric_traits;
83 struct is_const_pointer
87 value = is_const<T>::value && is_pointer<T>::value
92 struct is_const_reference
96 value = is_const<T>::value && is_reference<T>::value
105 value = is_fundamental<typename remove_const<T>::type>::value
106 || is_pointer<typename remove_const<T>::type>::value
107 || is_member_pointer<T>::value
124 template<typename U, typename V>
125 struct is_pair_imp<std::pair<U,V> >
136 value = is_pair_imp<T>::value
142 struct static_assert;
145 struct static_assert<true>
149 struct static_assert_dumclass
157 template<typename Type>
162 } // namespace detail