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// C++11 -*- C++ -*- |
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// Copyright (C) 2010-2015 Free Software Foundation, Inc. |
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// |
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// This file is part of the GNU ISO C++ Library. This library is free |
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// software; you can redistribute it and/or modify it under the |
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// terms of the GNU General Public License as published by the |
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// Free Software Foundation; either version 3, or (at your option) |
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// any later version. |
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// This library is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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// Under Section 7 of GPL version 3, you are granted additional |
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// permissions described in the GCC Runtime Library Exception, version |
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// 3.1, as published by the Free Software Foundation. |
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// You should have received a copy of the GNU General Public License and |
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// a copy of the GCC Runtime Library Exception along with this program; |
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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// . |
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/** @file include/typeindex |
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* This is a Standard C++ Library header. |
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*/ |
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#ifndef _GLIBCXX_TYPEINDEX |
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#define _GLIBCXX_TYPEINDEX 1 |
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#pragma GCC system_header |
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#if __cplusplus < 201103L |
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# include |
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#else |
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#include |
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namespace std _GLIBCXX_VISIBILITY(default) |
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{ |
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_GLIBCXX_BEGIN_NAMESPACE_VERSION |
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/** |
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* @brief Class type_index |
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* @ingroup utilities |
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* |
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* The class type_index provides a simple wrapper for type_info |
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* which can be used as an index type in associative containers |
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* (23.6) and in unordered associative containers (23.7). |
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*/ |
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struct type_index |
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{ |
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type_index(const type_info& __rhs) noexcept |
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: _M_target(&__rhs) { } |
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bool |
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operator==(const type_index& __rhs) const noexcept |
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{ return *_M_target == *__rhs._M_target; } |
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bool |
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operator!=(const type_index& __rhs) const noexcept |
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{ return *_M_target != *__rhs._M_target; } |
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bool |
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operator<(const type_index& __rhs) const noexcept |
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{ return _M_target->before(*__rhs._M_target); } |
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bool |
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operator<=(const type_index& __rhs) const noexcept |
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{ return !__rhs._M_target->before(*_M_target); } |
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bool |
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operator>(const type_index& __rhs) const noexcept |
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{ return __rhs._M_target->before(*_M_target); } |
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bool |
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operator>=(const type_index& __rhs) const noexcept |
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{ return !_M_target->before(*__rhs._M_target); } |
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size_t |
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hash_code() const noexcept |
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{ return _M_target->hash_code(); } |
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const char* |
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name() const noexcept |
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{ return _M_target->name(); } |
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private: |
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const type_info* _M_target; |
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}; |
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template struct hash; |
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/// std::hash specialization for type_index. |
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template<> |
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struct hash |
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{ |
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typedef size_t result_type; |
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typedef type_index argument_type; |
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size_t |
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operator()(const type_index& __ti) const noexcept |
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{ return __ti.hash_code(); } |
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}; |
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_GLIBCXX_END_NAMESPACE_VERSION |
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} // namespace std |
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#endif // C++11 |
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#endif // _GLIBCXX_TYPEINDEX |