1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_TYPEINDEX 11#define _LIBCPP_TYPEINDEX 12 13/* 14 15 typeindex synopsis 16 17namespace std 18{ 19 20class type_index 21{ 22public: 23 type_index(const type_info& rhs) noexcept; 24 25 bool operator==(const type_index& rhs) const noexcept; 26 bool operator!=(const type_index& rhs) const noexcept; 27 bool operator< (const type_index& rhs) const noexcept; 28 bool operator<=(const type_index& rhs) const noexcept; 29 bool operator> (const type_index& rhs) const noexcept; 30 bool operator>=(const type_index& rhs) const noexcept; 31 32 size_t hash_code() const noexcept; 33 const char* name() const noexcept; 34}; 35 36template <> 37struct hash<type_index> 38 : public unary_function<type_index, size_t> 39{ 40 size_t operator()(type_index index) const noexcept; 41}; 42 43} // std 44 45*/ 46 47#include <__assert> // all public C++ headers provide the assertion handler 48#include <__config> 49#include <__functional/unary_function.h> 50#include <typeinfo> 51#include <version> 52 53#ifndef _LIBCPP_REMOVE_TRANSITIVE_INCLUDES 54# include <iosfwd> 55# include <new> 56# include <utility> 57#endif 58 59// standard-mandated includes 60#include <compare> 61 62#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 63# pragma GCC system_header 64#endif 65 66_LIBCPP_BEGIN_NAMESPACE_STD 67 68class _LIBCPP_TEMPLATE_VIS type_index 69{ 70 const type_info* __t_; 71public: 72 _LIBCPP_INLINE_VISIBILITY 73 type_index(const type_info& __y) _NOEXCEPT : __t_(&__y) {} 74 75 _LIBCPP_INLINE_VISIBILITY 76 bool operator==(const type_index& __y) const _NOEXCEPT 77 {return *__t_ == *__y.__t_;} 78 _LIBCPP_INLINE_VISIBILITY 79 bool operator!=(const type_index& __y) const _NOEXCEPT 80 {return *__t_ != *__y.__t_;} 81 _LIBCPP_INLINE_VISIBILITY 82 bool operator< (const type_index& __y) const _NOEXCEPT 83 {return __t_->before(*__y.__t_);} 84 _LIBCPP_INLINE_VISIBILITY 85 bool operator<=(const type_index& __y) const _NOEXCEPT 86 {return !__y.__t_->before(*__t_);} 87 _LIBCPP_INLINE_VISIBILITY 88 bool operator> (const type_index& __y) const _NOEXCEPT 89 {return __y.__t_->before(*__t_);} 90 _LIBCPP_INLINE_VISIBILITY 91 bool operator>=(const type_index& __y) const _NOEXCEPT 92 {return !__t_->before(*__y.__t_);} 93 94 _LIBCPP_INLINE_VISIBILITY 95 size_t hash_code() const _NOEXCEPT {return __t_->hash_code();} 96 _LIBCPP_INLINE_VISIBILITY 97 const char* name() const _NOEXCEPT {return __t_->name();} 98}; 99 100template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash; 101 102template <> 103struct _LIBCPP_TEMPLATE_VIS hash<type_index> 104 : public __unary_function<type_index, size_t> 105{ 106 _LIBCPP_INLINE_VISIBILITY 107 size_t operator()(type_index __index) const _NOEXCEPT 108 {return __index.hash_code();} 109}; 110 111_LIBCPP_END_NAMESPACE_STD 112 113#endif // _LIBCPP_TYPEINDEX 114