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1 | // C++0x typeindex -*- C++ -*- |
2 | ||
405feeb8 | 3 | // Copyright (C) 2010-2013 Free Software Foundation, Inc. |
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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 | ||
734f5023 | 34 | #if __cplusplus < 201103L |
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35 | # include <bits/c++0x_warning.h> |
36 | #else | |
37 | ||
bafa9791 | 38 | #include <typeinfo> |
bafa9791 | 39 | |
12ffa228 BK |
40 | namespace std _GLIBCXX_VISIBILITY(default) |
41 | { | |
42 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
53dc5044 | 43 | |
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44 | /** |
45 | @brief The class type_index provides a simple wrapper for type_info | |
46 | which can be used as an index type in associative containers (23.6) | |
47 | and in unordered associative containers (23.7). | |
48 | */ | |
49 | struct type_index | |
50 | { | |
2789f415 | 51 | type_index(const type_info& __rhs) noexcept |
bafa9791 PC |
52 | : _M_target(&__rhs) { } |
53 | ||
54 | bool | |
2789f415 | 55 | operator==(const type_index& __rhs) const noexcept |
bafa9791 PC |
56 | { return *_M_target == *__rhs._M_target; } |
57 | ||
58 | bool | |
2789f415 | 59 | operator!=(const type_index& __rhs) const noexcept |
bafa9791 PC |
60 | { return *_M_target != *__rhs._M_target; } |
61 | ||
62 | bool | |
2789f415 | 63 | operator<(const type_index& __rhs) const noexcept |
bafa9791 PC |
64 | { return _M_target->before(*__rhs._M_target); } |
65 | ||
66 | bool | |
2789f415 | 67 | operator<=(const type_index& __rhs) const noexcept |
bafa9791 PC |
68 | { return !__rhs._M_target->before(*_M_target); } |
69 | ||
70 | bool | |
2789f415 | 71 | operator>(const type_index& __rhs) const noexcept |
bafa9791 PC |
72 | { return __rhs._M_target->before(*_M_target); } |
73 | ||
74 | bool | |
2789f415 | 75 | operator>=(const type_index& __rhs) const noexcept |
bafa9791 PC |
76 | { return !_M_target->before(*__rhs._M_target); } |
77 | ||
78 | size_t | |
72f1c34b | 79 | hash_code() const noexcept |
bafa9791 PC |
80 | { return _M_target->hash_code(); } |
81 | ||
82 | const char* | |
83 | name() const | |
84 | { return _M_target->name(); } | |
85 | ||
86 | private: | |
87 | const type_info* _M_target; | |
88 | }; | |
89 | ||
90 | template<typename _Tp> struct hash; | |
91 | ||
92 | /// std::hash specialization for type_index. | |
93 | template<> | |
94 | struct hash<type_index> | |
bafa9791 | 95 | { |
5d64ee19 PC |
96 | typedef size_t result_type; |
97 | typedef type_index argument_type; | |
98 | ||
bafa9791 | 99 | size_t |
72f1c34b | 100 | operator()(const type_index& __ti) const noexcept |
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101 | { return __ti.hash_code(); } |
102 | }; | |
53dc5044 | 103 | |
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104 | _GLIBCXX_END_NAMESPACE_VERSION |
105 | } // namespace | |
bafa9791 | 106 | |
734f5023 | 107 | #endif // C++11 |
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108 | |
109 | #endif // _GLIBCXX_TYPEINDEX |