1169691Skan// -*- C++ -*- 2169691Skan 3169691Skan// Copyright (C) 2005, 2006 Free Software Foundation, Inc. 4169691Skan// 5169691Skan// This file is part of the GNU ISO C++ Library. This library is free 6169691Skan// software; you can redistribute it and/or modify it under the terms 7169691Skan// of the GNU General Public License as published by the Free Software 8169691Skan// Foundation; either version 2, or (at your option) any later 9169691Skan// version. 10169691Skan 11169691Skan// This library is distributed in the hope that it will be useful, but 12169691Skan// WITHOUT ANY WARRANTY; without even the implied warranty of 13169691Skan// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14169691Skan// General Public License for more details. 15169691Skan 16169691Skan// You should have received a copy of the GNU General Public License 17169691Skan// along with this library; see the file COPYING. If not, write to 18169691Skan// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19169691Skan// MA 02111-1307, USA. 20169691Skan 21169691Skan// As a special exception, you may use this file as part of a free 22169691Skan// software library without restriction. Specifically, if other files 23169691Skan// instantiate templates or use macros or inline functions from this 24169691Skan// file, or you compile this file and link it with other files to 25169691Skan// produce an executable, this file does not by itself cause the 26169691Skan// resulting executable to be covered by the GNU General Public 27169691Skan// License. This exception does not however invalidate any other 28169691Skan// reasons why the executable file might be covered by the GNU General 29169691Skan// Public License. 30169691Skan 31169691Skan// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32169691Skan 33169691Skan// Permission to use, copy, modify, sell, and distribute this software 34169691Skan// is hereby granted without fee, provided that the above copyright 35169691Skan// notice appears in all copies, and that both that copyright notice 36169691Skan// and this permission notice appear in supporting documentation. None 37169691Skan// of the above authors, nor IBM Haifa Research Laboratories, make any 38169691Skan// representation about the suitability of this software for any 39169691Skan// purpose. It is provided "as is" without express or implied 40169691Skan// warranty. 41169691Skan 42169691Skan/** 43169691Skan * @file type_utils.hpp 44169691Skan * Contains utilities for handnling types. All of these classes are based on 45169691Skan * "Modern C++" by Andrei Alxandrescu. 46169691Skan */ 47169691Skan 48169691Skan#ifndef PB_DS_TYPE_UTILS_HPP 49169691Skan#define PB_DS_TYPE_UTILS_HPP 50169691Skan 51169691Skan#include <cstddef> 52169691Skan#include <utility> 53169691Skan#include <tr1/type_traits> 54169691Skan#include <ext/type_traits.h> 55169691Skan#include <ext/numeric_traits.h> 56169691Skan 57169691Skannamespace pb_ds 58169691Skan{ 59169691Skan namespace detail 60169691Skan { 61169691Skan using std::tr1::is_same; 62169691Skan using std::tr1::is_const; 63169691Skan using std::tr1::is_pointer; 64169691Skan using std::tr1::is_reference; 65169691Skan using std::tr1::is_fundamental; 66169691Skan using std::tr1::is_member_object_pointer; 67169691Skan using std::tr1::is_member_pointer; 68169691Skan using std::tr1::is_base_of; 69169691Skan using std::tr1::remove_const; 70169691Skan using std::tr1::remove_reference; 71169691Skan 72169691Skan // Need integral_const<bool, true> <-> integral_const<int, 1>, so 73169691Skan // because of this use the following typedefs instead of importing 74169691Skan // std::tr1's. 75169691Skan using std::tr1::integral_constant; 76169691Skan typedef std::tr1::integral_constant<int, 1> true_type; 77169691Skan typedef std::tr1::integral_constant<int, 0> false_type; 78169691Skan 79169691Skan using __gnu_cxx::__conditional_type; 80169691Skan using __gnu_cxx::__numeric_traits; 81169691Skan 82169691Skan template<typename T> 83169691Skan struct is_const_pointer 84169691Skan { 85169691Skan enum 86169691Skan { 87169691Skan value = is_const<T>::value && is_pointer<T>::value 88169691Skan }; 89169691Skan }; 90169691Skan 91169691Skan template<typename T> 92169691Skan struct is_const_reference 93169691Skan { 94169691Skan enum 95169691Skan { 96169691Skan value = is_const<T>::value && is_reference<T>::value 97169691Skan }; 98169691Skan }; 99169691Skan 100169691Skan template<typename T> 101169691Skan struct is_simple 102169691Skan { 103169691Skan enum 104169691Skan { 105169691Skan value = is_fundamental<typename remove_const<T>::type>::value 106169691Skan || is_pointer<typename remove_const<T>::type>::value 107169691Skan || is_member_pointer<T>::value 108169691Skan }; 109169691Skan }; 110169691Skan 111169691Skan template<typename T> 112169691Skan class is_pair 113169691Skan { 114169691Skan private: 115169691Skan template<typename U> 116169691Skan struct is_pair_imp 117169691Skan { 118169691Skan enum 119169691Skan { 120169691Skan value = 0 121169691Skan }; 122169691Skan }; 123169691Skan 124169691Skan template<typename U, typename V> 125169691Skan struct is_pair_imp<std::pair<U,V> > 126169691Skan { 127169691Skan enum 128169691Skan { 129169691Skan value = 1 130169691Skan }; 131169691Skan }; 132169691Skan 133169691Skan public: 134169691Skan enum 135169691Skan { 136169691Skan value = is_pair_imp<T>::value 137169691Skan }; 138169691Skan }; 139169691Skan 140169691Skan 141169691Skan template<bool> 142169691Skan struct static_assert; 143169691Skan 144169691Skan template<> 145169691Skan struct static_assert<true> 146169691Skan { }; 147169691Skan 148169691Skan template<int> 149169691Skan struct static_assert_dumclass 150169691Skan { 151169691Skan enum 152169691Skan { 153169691Skan v = 1 154169691Skan }; 155169691Skan }; 156169691Skan 157169691Skan template<typename Type> 158169691Skan struct type_to_type 159169691Skan { 160169691Skan typedef Type type; 161169691Skan }; 162169691Skan } // namespace detail 163169691Skan} // namespace pb_ds 164169691Skan 165169691Skan#endif 166