David 'Digit' Turner | 3523514 | 2014-06-03 15:18:04 +0200 | [diff] [blame] | 1 | // C++11 <typeindex> -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2010-2013 Free Software Foundation, Inc. |
| 4 | // |
| 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 |
| 7 | // terms of the GNU General Public License as published by the |
| 8 | // Free Software Foundation; either version 3, or (at your option) |
| 9 | // any later version. |
| 10 | |
| 11 | // This library is distributed in the hope that it will be useful, |
| 12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | // GNU General Public License for more details. |
| 15 | |
| 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. |
| 19 | |
| 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/>. |
| 24 | |
| 25 | /** @file include/typeindex |
| 26 | * This is a Standard C++ Library header. |
| 27 | */ |
| 28 | |
| 29 | #ifndef _GLIBCXX_TYPEINDEX |
| 30 | #define _GLIBCXX_TYPEINDEX 1 |
| 31 | |
| 32 | #pragma GCC system_header |
| 33 | |
| 34 | #if __cplusplus < 201103L |
| 35 | # include <bits/c++0x_warning.h> |
| 36 | #else |
| 37 | |
| 38 | #include <typeinfo> |
| 39 | |
| 40 | namespace std _GLIBCXX_VISIBILITY(default) |
| 41 | { |
| 42 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| 43 | |
| 44 | /** |
| 45 | * @brief Class type_index |
| 46 | * @ingroup utilities |
| 47 | * |
| 48 | * The class type_index provides a simple wrapper for type_info |
| 49 | * which can be used as an index type in associative containers |
| 50 | * (23.6) and in unordered associative containers (23.7). |
| 51 | */ |
| 52 | struct type_index |
| 53 | { |
| 54 | type_index(const type_info& __rhs) noexcept |
| 55 | : _M_target(&__rhs) { } |
| 56 | |
| 57 | bool |
| 58 | operator==(const type_index& __rhs) const noexcept |
| 59 | { return *_M_target == *__rhs._M_target; } |
| 60 | |
| 61 | bool |
| 62 | operator!=(const type_index& __rhs) const noexcept |
| 63 | { return *_M_target != *__rhs._M_target; } |
| 64 | |
| 65 | bool |
| 66 | operator<(const type_index& __rhs) const noexcept |
| 67 | { return _M_target->before(*__rhs._M_target); } |
| 68 | |
| 69 | bool |
| 70 | operator<=(const type_index& __rhs) const noexcept |
| 71 | { return !__rhs._M_target->before(*_M_target); } |
| 72 | |
| 73 | bool |
| 74 | operator>(const type_index& __rhs) const noexcept |
| 75 | { return __rhs._M_target->before(*_M_target); } |
| 76 | |
| 77 | bool |
| 78 | operator>=(const type_index& __rhs) const noexcept |
| 79 | { return !_M_target->before(*__rhs._M_target); } |
| 80 | |
| 81 | size_t |
| 82 | hash_code() const noexcept |
| 83 | { return _M_target->hash_code(); } |
| 84 | |
| 85 | const char* |
| 86 | name() const |
| 87 | { return _M_target->name(); } |
| 88 | |
| 89 | private: |
| 90 | const type_info* _M_target; |
| 91 | }; |
| 92 | |
| 93 | template<typename _Tp> struct hash; |
| 94 | |
| 95 | /// std::hash specialization for type_index. |
| 96 | template<> |
| 97 | struct hash<type_index> |
| 98 | { |
| 99 | typedef size_t result_type; |
| 100 | typedef type_index argument_type; |
| 101 | |
| 102 | size_t |
| 103 | operator()(const type_index& __ti) const noexcept |
| 104 | { return __ti.hash_code(); } |
| 105 | }; |
| 106 | |
| 107 | _GLIBCXX_END_NAMESPACE_VERSION |
| 108 | } // namespace std |
| 109 | |
| 110 | #endif // C++11 |
| 111 | |
| 112 | #endif // _GLIBCXX_TYPEINDEX |