typeindex revision 262801 
1// -*- C++ -*-
2//===-------------------------- typeindex ---------------------------------===//
3//
4//                     The LLVM Compiler Infrastructure
5//
6// This file is dual licensed under the MIT and the University of Illinois Open
7// Source Licenses. See LICENSE.TXT for details.
8//
9//===----------------------------------------------------------------------===//
10
11#ifndef _LIBCPP_TYPEINDEX
12#define _LIBCPP_TYPEINDEX
13
14/*
15
16    typeindex synopsis
17
18namespace std
19{
20
21class type_index
22{
23public:
24    type_index(const type_info& rhs) noexcept;
25
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    bool operator>=(const type_index& rhs) const noexcept;
32
33    size_t hash_code() const noexcept;
34    const char* name() const noexcept;
35};
36
37template <>
38struct hash<type_index>
39    : public unary_function<type_index, size_t>
40{
41    size_t operator()(type_index index) const noexcept;
42};
43
44}  // std
45
46*/
47
48#include <__config>
49#include <typeinfo>
50#include <__functional_base>
51
52#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
53#pragma GCC system_header
54#endif
55
56_LIBCPP_BEGIN_NAMESPACE_STD
57
58class _LIBCPP_TYPE_VIS_ONLY type_index
59{
60    const type_info* __t_;
61public:
62    _LIBCPP_INLINE_VISIBILITY
63    type_index(const type_info& __y) _NOEXCEPT : __t_(&__y) {}
64
65    _LIBCPP_INLINE_VISIBILITY
66    bool operator==(const type_index& __y) const _NOEXCEPT
67        {return *__t_ == *__y.__t_;}
68    _LIBCPP_INLINE_VISIBILITY
69    bool operator!=(const type_index& __y) const _NOEXCEPT
70        {return *__t_ != *__y.__t_;}
71    _LIBCPP_INLINE_VISIBILITY
72    bool operator< (const type_index& __y) const _NOEXCEPT
73        {return  __t_->before(*__y.__t_);}
74    _LIBCPP_INLINE_VISIBILITY
75    bool operator<=(const type_index& __y) const _NOEXCEPT
76        {return !__y.__t_->before(*__t_);}
77    _LIBCPP_INLINE_VISIBILITY
78    bool operator> (const type_index& __y) const _NOEXCEPT
79        {return  __y.__t_->before(*__t_);}
80    _LIBCPP_INLINE_VISIBILITY
81    bool operator>=(const type_index& __y) const _NOEXCEPT
82        {return !__t_->before(*__y.__t_);}
83
84    _LIBCPP_INLINE_VISIBILITY
85    size_t hash_code() const _NOEXCEPT {return __t_->hash_code();}
86    _LIBCPP_INLINE_VISIBILITY
87    const char* name() const _NOEXCEPT {return __t_->name();}
88};
89
90template <class _Tp> struct _LIBCPP_TYPE_VIS_ONLY hash;
91
92template <>
93struct _LIBCPP_TYPE_VIS_ONLY hash<type_index>
94    : public unary_function<type_index, size_t>
95{
96    _LIBCPP_INLINE_VISIBILITY
97    size_t operator()(type_index __index) const _NOEXCEPT
98        {return __index.hash_code();}
99};
100
101_LIBCPP_END_NAMESPACE_STD
102
103#endif  // _LIBCPP_TYPEINDEX
104