3 // Copyright (C) 2005-2013 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
27 // Permission to use, copy, modify, sell, and distribute this software
28 // is hereby granted without fee, provided that the above copyright
29 // notice appears in all copies, and that both that copyright notice
30 // and this permission notice appear in supporting documentation. None
31 // of the above authors, nor IBM Haifa Research Laboratories, make any
32 // representation about the suitability of this software for any
33 // purpose. It is provided "as is" without express or implied
37 * @file detail/type_utils.hpp
38 * Contains utilities for handnling types. All of these classes are based on
39 * Modern C++ by Andrei Alxandrescu.
42 #ifndef PB_DS_TYPE_UTILS_HPP
43 #define PB_DS_TYPE_UTILS_HPP
47 #include <tr1/type_traits>
48 #include <ext/type_traits.h>
49 #include <ext/numeric_traits.h>
55 using std::tr1::is_same;
56 using std::tr1::is_const;
57 using std::tr1::is_pointer;
58 using std::tr1::is_reference;
59 using std::tr1::is_fundamental;
60 using std::tr1::is_member_object_pointer;
61 using std::tr1::is_member_pointer;
62 using std::tr1::is_base_of;
63 using std::tr1::remove_const;
64 using std::tr1::remove_reference;
66 // Need integral_const<bool, true> <-> integral_const<int, 1>, so
67 // because of this use the following typedefs instead of importing
69 using std::tr1::integral_constant;
70 typedef std::tr1::integral_constant<int, 1> true_type;
71 typedef std::tr1::integral_constant<int, 0> false_type;
73 using __gnu_cxx::__conditional_type;
74 using __gnu_cxx::__numeric_traits;
77 struct is_const_pointer
81 value = is_const<T>::value && is_pointer<T>::value
86 struct is_const_reference
90 value = is_const<T>::value && is_reference<T>::value
99 value = is_fundamental<typename remove_const<T>::type>::value
100 || is_pointer<typename remove_const<T>::type>::value
101 || is_member_pointer<T>::value
118 template<typename U, typename V>
119 struct is_pair_imp<std::pair<U,V> >
130 value = is_pair_imp<T>::value
134 // Use C++0x's static_assert if possible.
135 #if __cplusplus >= 201103L
136 #define PB_DS_STATIC_ASSERT(UNIQUE, E) static_assert(E, #UNIQUE)
139 struct __static_assert;
142 struct __static_assert<true>
146 struct __static_assert_dumclass
154 #define PB_DS_STATIC_ASSERT(UNIQUE, E) \
155 typedef __gnu_pbds::detail::__static_assert_dumclass<sizeof(__gnu_pbds::detail::__static_assert<bool(E)>)> UNIQUE##__static_assert_type
159 template<typename Type>
164 } // namespace detail
165 } // namespace __gnu_pbds