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