112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_TYPEINDEX
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#define _LIBCPP_TYPEINDEX
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/*
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typeindex synopsis
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namespace std
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{
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class type_index
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{
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public:
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type_index(const type_info& rhs) noexcept;
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bool operator==(const type_index& rhs) const noexcept;
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bool operator!=(const type_index& rhs) const noexcept; // removed in C++20
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bool operator< (const type_index& rhs) const noexcept;
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bool operator<=(const type_index& rhs) const noexcept;
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bool operator> (const type_index& rhs) const noexcept;
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bool operator>=(const type_index& rhs) const noexcept;
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strong_ordering operator<=>(const type_index& rhs) const noexcept; // C++20
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size_t hash_code() const noexcept;
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const char* name() const noexcept;
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};
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template <>
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struct hash<type_index>
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: public unary_function<type_index, size_t>
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{
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size_t operator()(type_index index) const noexcept;
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};
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} // std
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*/
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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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# include <__cxx03/typeindex>
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#else
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# include <__config>
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# include <__functional/unary_function.h>
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# include <typeinfo>
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# include <version>
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// standard-mandated includes
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# include <compare>
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# if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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# endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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class type_index {
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const type_info* __t_;
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public:
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_LIBCPP_HIDE_FROM_ABI type_index(const type_info& __y) _NOEXCEPT : __t_(&__y) {}
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_LIBCPP_HIDE_FROM_ABI bool operator==(const type_index& __y) const _NOEXCEPT { return *__t_ == *__y.__t_; }
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# if _LIBCPP_STD_VER <= 17
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_LIBCPP_HIDE_FROM_ABI bool operator!=(const type_index& __y) const _NOEXCEPT { return *__t_ != *__y.__t_; }
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# endif
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_LIBCPP_HIDE_FROM_ABI bool operator<(const type_index& __y) const _NOEXCEPT { return __t_->before(*__y.__t_); }
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_LIBCPP_HIDE_FROM_ABI bool operator<=(const type_index& __y) const _NOEXCEPT { return !__y.__t_->before(*__t_); }
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_LIBCPP_HIDE_FROM_ABI bool operator>(const type_index& __y) const _NOEXCEPT { return __y.__t_->before(*__t_); }
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_LIBCPP_HIDE_FROM_ABI bool operator>=(const type_index& __y) const _NOEXCEPT { return !__t_->before(*__y.__t_); }
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# if _LIBCPP_STD_VER >= 20
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_LIBCPP_HIDE_FROM_ABI strong_ordering operator<=>(const type_index& __y) const noexcept {
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if (*__t_ == *__y.__t_)
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return strong_ordering::equal;
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if (__t_->before(*__y.__t_))
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return strong_ordering::less;
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return strong_ordering::greater;
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}
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# endif
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_LIBCPP_HIDE_FROM_ABI size_t hash_code() const _NOEXCEPT { return __t_->hash_code(); }
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_LIBCPP_HIDE_FROM_ABI const char* name() const _NOEXCEPT { return __t_->name(); }
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};
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template <class _Tp>
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struct hash;
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template <>
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struct hash<type_index> : public __unary_function<type_index, size_t> {
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_LIBCPP_HIDE_FROM_ABI size_t operator()(type_index __index) const _NOEXCEPT { return __index.hash_code(); }
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};
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_LIBCPP_END_NAMESPACE_STD
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# if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
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# include <cstddef>
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# include <iosfwd>
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# include <new>
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# include <utility>
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# endif
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#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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#endif // _LIBCPP_TYPEINDEX
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