| // C++11 <typeindex> -*- C++ -*- |
| |
| // Copyright (C) 2010-2013 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| /** @file include/typeindex |
| * This is a Standard C++ Library header. |
| */ |
| |
| #ifndef _GLIBCXX_TYPEINDEX |
| #define _GLIBCXX_TYPEINDEX 1 |
| |
| #pragma GCC system_header |
| |
| #if __cplusplus < 201103L |
| # include <bits/c++0x_warning.h> |
| #else |
| |
| #include <typeinfo> |
| |
| namespace std _GLIBCXX_VISIBILITY(default) |
| { |
| _GLIBCXX_BEGIN_NAMESPACE_VERSION |
| |
| /** |
| * @brief Class type_index |
| * @ingroup utilities |
| * |
| * The class type_index provides a simple wrapper for type_info |
| * which can be used as an index type in associative containers |
| * (23.6) and in unordered associative containers (23.7). |
| */ |
| struct type_index |
| { |
| type_index(const type_info& __rhs) noexcept |
| : _M_target(&__rhs) { } |
| |
| bool |
| operator==(const type_index& __rhs) const noexcept |
| { return *_M_target == *__rhs._M_target; } |
| |
| bool |
| operator!=(const type_index& __rhs) const noexcept |
| { return *_M_target != *__rhs._M_target; } |
| |
| bool |
| operator<(const type_index& __rhs) const noexcept |
| { return _M_target->before(*__rhs._M_target); } |
| |
| bool |
| operator<=(const type_index& __rhs) const noexcept |
| { return !__rhs._M_target->before(*_M_target); } |
| |
| bool |
| operator>(const type_index& __rhs) const noexcept |
| { return __rhs._M_target->before(*_M_target); } |
| |
| bool |
| operator>=(const type_index& __rhs) const noexcept |
| { return !_M_target->before(*__rhs._M_target); } |
| |
| size_t |
| hash_code() const noexcept |
| { return _M_target->hash_code(); } |
| |
| const char* |
| name() const |
| { return _M_target->name(); } |
| |
| private: |
| const type_info* _M_target; |
| }; |
| |
| template<typename _Tp> struct hash; |
| |
| /// std::hash specialization for type_index. |
| template<> |
| struct hash<type_index> |
| { |
| typedef size_t result_type; |
| typedef type_index argument_type; |
| |
| size_t |
| operator()(const type_index& __ti) const noexcept |
| { return __ti.hash_code(); } |
| }; |
| |
| _GLIBCXX_END_NAMESPACE_VERSION |
| } // namespace std |
| |
| #endif // C++11 |
| |
| #endif // _GLIBCXX_TYPEINDEX |