зеркало из https://github.com/microsoft/STL.git
96 строки
2.6 KiB
C++
96 строки
2.6 KiB
C++
// typeindex standard header
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// Copyright (c) Microsoft Corporation.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef _TYPEINDEX_
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#define _TYPEINDEX_
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#include <yvals_core.h>
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#if _STL_COMPILER_PREPROCESSOR
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#include <typeinfo>
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#if _HAS_CXX20
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#include <compare>
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#include <cstring>
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#endif // _HAS_CXX20
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#pragma pack(push, _CRT_PACKING)
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#pragma warning(push, _STL_WARNING_LEVEL)
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#pragma warning(disable : _STL_DISABLED_WARNINGS)
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_STL_DISABLE_CLANG_WARNINGS
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#pragma push_macro("new")
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#undef new
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_STD_BEGIN
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_EXPORT_STD class type_index { // wraps a typeinfo for indexing
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public:
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type_index(const type_info& _Tinfo) noexcept : _Tptr(&_Tinfo) {}
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_NODISCARD size_t hash_code() const noexcept {
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return _Tptr->hash_code();
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}
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_NODISCARD const char* name() const noexcept {
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return _Tptr->name();
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}
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_NODISCARD bool operator==(const type_index& _Right) const noexcept {
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return *_Tptr == *_Right._Tptr;
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}
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#if _HAS_CXX20
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_NODISCARD strong_ordering operator<=>(const type_index& _Right) const noexcept {
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// TRANSITION, DevCom-10326599, should rely on a stable interface
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if (_Tptr == _Right._Tptr) {
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return strong_ordering::equal;
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}
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#pragma push_macro("raw_name") // TRANSITION, GH-2195
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#undef raw_name
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return _CSTD strcmp(_Tptr->raw_name() + 1, _Right._Tptr->raw_name() + 1) <=> 0;
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#pragma pop_macro("raw_name")
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}
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#else // ^^^ _HAS_CXX20 / !_HAS_CXX20 vvv
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_NODISCARD bool operator!=(const type_index& _Right) const noexcept {
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return !(*this == _Right);
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}
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#endif // ^^^ !_HAS_CXX20 ^^^
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_NODISCARD bool operator<(const type_index& _Right) const noexcept {
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return _Tptr->before(*_Right._Tptr);
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}
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_NODISCARD bool operator>=(const type_index& _Right) const noexcept {
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return !(*this < _Right);
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}
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_NODISCARD bool operator>(const type_index& _Right) const noexcept {
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return _Right < *this;
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}
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_NODISCARD bool operator<=(const type_index& _Right) const noexcept {
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return !(_Right < *this);
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}
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private:
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const type_info* _Tptr;
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};
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template <>
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struct hash<type_index> {
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using _ARGUMENT_TYPE_NAME _CXX17_DEPRECATE_ADAPTOR_TYPEDEFS = type_index;
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using _RESULT_TYPE_NAME _CXX17_DEPRECATE_ADAPTOR_TYPEDEFS = size_t;
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_NODISCARD size_t operator()(const type_index& _Keyval) const noexcept {
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return _Keyval.hash_code();
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}
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};
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_STD_END
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#pragma pop_macro("new")
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_STL_RESTORE_CLANG_WARNINGS
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#pragma warning(pop)
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#pragma pack(pop)
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#endif // _STL_COMPILER_PREPROCESSOR
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#endif // _TYPEINDEX_
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