1 // C++0x typeindex -*- C++ -*-
3 // Copyright (C) 2010 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
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
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.
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 /** @file include/typeindex
26 * This is a Standard C++ Library header.
29 #ifndef _GLIBCXX_TYPEINDEX
30 #define _GLIBCXX_TYPEINDEX 1
32 #pragma GCC system_header
34 #ifndef __GXX_EXPERIMENTAL_CXX0X__
35 # include <bits/c++0x_warning.h>
40 namespace std _GLIBCXX_VISIBILITY(default)
42 _GLIBCXX_BEGIN_NAMESPACE_VERSION
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).
51 type_index(const type_info& __rhs)
52 : _M_target(&__rhs) { }
55 operator==(const type_index& __rhs) const
56 { return *_M_target == *__rhs._M_target; }
59 operator!=(const type_index& __rhs) const
60 { return *_M_target != *__rhs._M_target; }
63 operator<(const type_index& __rhs) const
64 { return _M_target->before(*__rhs._M_target); }
67 operator<=(const type_index& __rhs) const
68 { return !__rhs._M_target->before(*_M_target); }
71 operator>(const type_index& __rhs) const
72 { return __rhs._M_target->before(*_M_target); }
75 operator>=(const type_index& __rhs) const
76 { return !_M_target->before(*__rhs._M_target); }
80 { return _M_target->hash_code(); }
84 { return _M_target->name(); }
87 const type_info* _M_target;
90 template<typename _Tp> struct hash;
92 /// std::hash specialization for type_index.
94 struct hash<type_index>
96 typedef size_t result_type;
97 typedef type_index argument_type;
100 operator()(const type_index& __ti) const
101 { return __ti.hash_code(); }
104 _GLIBCXX_END_NAMESPACE_VERSION
107 #endif // __GXX_EXPERIMENTAL_CXX0X__
109 #endif // _GLIBCXX_TYPEINDEX