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 <__config>
48#include <__functional/unary_function.h>
49#include <compare>
50#include <typeinfo>
51#include <version>
52
53// TODO: remove these headers
54#include <__functional/binary_function.h>
55#include <__functional/invoke.h>
56#include <__functional/operations.h>
57#include <__functional/reference_wrapper.h>
58#include <__functional/weak_result_type.h>
59#include <__memory/allocator_arg_t.h>
60#include <__memory/uses_allocator.h>
61#include <new>
62
63#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
64#  pragma GCC system_header
65#endif
66
67_LIBCPP_BEGIN_NAMESPACE_STD
68
69class _LIBCPP_TEMPLATE_VIS type_index
70{
71    const type_info* __t_;
72public:
73    _LIBCPP_INLINE_VISIBILITY
74    type_index(const type_info& __y) _NOEXCEPT : __t_(&__y) {}
75
76    _LIBCPP_INLINE_VISIBILITY
77    bool operator==(const type_index& __y) const _NOEXCEPT
78        {return *__t_ == *__y.__t_;}
79    _LIBCPP_INLINE_VISIBILITY
80    bool operator!=(const type_index& __y) const _NOEXCEPT
81        {return *__t_ != *__y.__t_;}
82    _LIBCPP_INLINE_VISIBILITY
83    bool operator< (const type_index& __y) const _NOEXCEPT
84        {return  __t_->before(*__y.__t_);}
85    _LIBCPP_INLINE_VISIBILITY
86    bool operator<=(const type_index& __y) const _NOEXCEPT
87        {return !__y.__t_->before(*__t_);}
88    _LIBCPP_INLINE_VISIBILITY
89    bool operator> (const type_index& __y) const _NOEXCEPT
90        {return  __y.__t_->before(*__t_);}
91    _LIBCPP_INLINE_VISIBILITY
92    bool operator>=(const type_index& __y) const _NOEXCEPT
93        {return !__t_->before(*__y.__t_);}
94
95    _LIBCPP_INLINE_VISIBILITY
96    size_t hash_code() const _NOEXCEPT {return __t_->hash_code();}
97    _LIBCPP_INLINE_VISIBILITY
98    const char* name() const _NOEXCEPT {return __t_->name();}
99};
100
101template <class _Tp> struct _LIBCPP_TEMPLATE_VIS hash;
102
103template <>
104struct _LIBCPP_TEMPLATE_VIS hash<type_index>
105    : public unary_function<type_index, size_t>
106{
107    _LIBCPP_INLINE_VISIBILITY
108    size_t operator()(type_index __index) const _NOEXCEPT
109        {return __index.hash_code();}
110};
111
112_LIBCPP_END_NAMESPACE_STD
113
114#endif // _LIBCPP_TYPEINDEX
115