1// -*- C++ -*-
2//===-------------------------- typeindex ---------------------------------===//
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 <__config>
48#include <typeinfo>
49#include <__functional_base>
50
51#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
52#pragma GCC system_header
53#endif
54
55_LIBCPP_BEGIN_NAMESPACE_STD
56
57class _LIBCPP_TEMPLATE_VIS type_index
58{
59 const type_info* __t_;
60public:
61 _LIBCPP_INLINE_VISIBILITY
62 type_index(const type_info& __y) _NOEXCEPT : __t_(&__y) {}
63
64 _LIBCPP_INLINE_VISIBILITY
65 bool operator==(const type_index& __y) const _NOEXCEPT
66 {return *__t_ == *__y.__t_;}
67 _LIBCPP_INLINE_VISIBILITY
68 bool operator!=(const type_index& __y) const _NOEXCEPT
69 {return *__t_ != *__y.__t_;}
70 _LIBCPP_INLINE_VISIBILITY
71 bool operator< (const type_index& __y) const _NOEXCEPT
72 {return __t_->before(*__y.__t_);}
73 _LIBCPP_INLINE_VISIBILITY
74 bool operator<=(const type_index& __y) const _NOEXCEPT
75 {return !__y.__t_->before(*__t_);}
76 _LIBCPP_INLINE_VISIBILITY
77 bool operator> (const type_index& __y) const _NOEXCEPT
78 {return __y.__t_->before(*__t_);}
79 _LIBCPP_INLINE_VISIBILITY
80 bool operator>=(const type_index& __y) const _NOEXCEPT
81 {return !__t_->before(*__y.__t_);}
82
83 _LIBCPP_INLINE_VISIBILITY
84 size_t hash_code() const _NOEXCEPT {return __t_->hash_code();}
85 _LIBCPP_INLINE_VISIBILITY
86 const char* name() const _NOEXCEPT {return __t_->name();}
87};
88
89template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
90
91template <>
92struct _LIBCPP_TEMPLATE_VIS hash<type_index>
93 : public unary_function<type_index, size_t>
94{
95 _LIBCPP_INLINE_VISIBILITY
96 size_t operator()(type_index __index) const _NOEXCEPT
97 {return __index.hash_code();}
98};
99
100_LIBCPP_END_NAMESPACE_STD
101
102#endif // _LIBCPP_TYPEINDEX
103