bbb0f2c759
Our best guess is that the two syntaxes should have exactly equivalent effects, so, let's be consistent with what we do in libcxx/include/. I've left `#include "include/x.h"` and `#include "../y.h"` alone because I'm less sure that they're interchangeable, and they aren't inconsistent with libcxx/include/ because libcxx/include/ never does that kind of thing. Also, use the `_LIBCPP_PUSH_MACROS/POP_MACROS` dance for `<__undef_macros>`, even though it's technically unnecessary in a standalone .cpp file, just so we have consistently one way to do it. Differential Revision: https://reviews.llvm.org/D119561
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include <typeinfo>
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#if defined(_LIBCPP_ABI_MICROSOFT) && !defined(_LIBCPP_ABI_VCRUNTIME)
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#include <string.h>
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int std::type_info::__compare(const type_info &__rhs) const noexcept {
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if (&__data == &__rhs.__data)
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return 0;
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return strcmp(&__data.__decorated_name[1], &__rhs.__data.__decorated_name[1]);
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}
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const char *std::type_info::name() const noexcept {
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// TODO(compnerd) cache demangled &__data.__decorated_name[1]
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return &__data.__decorated_name[1];
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}
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size_t std::type_info::hash_code() const noexcept {
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#if defined(_WIN64)
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constexpr size_t fnv_offset_basis = 14695981039346656037ull;
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constexpr size_t fnv_prime = 10995116282110ull;
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#else
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constexpr size_t fnv_offset_basis = 2166136261ull;
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constexpr size_t fnv_prime = 16777619ull;
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#endif
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size_t value = fnv_offset_basis;
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for (const char* c = &__data.__decorated_name[1]; *c; ++c) {
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value ^= static_cast<size_t>(static_cast<unsigned char>(*c));
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value *= fnv_prime;
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}
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#if defined(_WIN64)
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value ^= value >> 32;
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#endif
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return value;
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}
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#endif // _LIBCPP_ABI_MICROSOFT
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// FIXME: Remove the _LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY configuration.
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#if (!defined(LIBCXX_BUILDING_LIBCXXABI) && \
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!defined(LIBCXXRT) && \
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!defined(__GLIBCXX__) && \
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!defined(_LIBCPP_ABI_VCRUNTIME)) || \
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defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)
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std::type_info::~type_info()
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{
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}
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#endif
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