diff options
Diffstat (limited to 'src/typeinfo.cpp')
-rw-r--r-- | src/typeinfo.cpp | 45 |
1 files changed, 41 insertions, 4 deletions
diff --git a/src/typeinfo.cpp b/src/typeinfo.cpp index 02778f368704..0cb193b77d9e 100644 --- a/src/typeinfo.cpp +++ b/src/typeinfo.cpp @@ -9,11 +9,48 @@ #include "typeinfo" +#if defined(_LIBCPP_ABI_MICROSOFT) +#include <string.h> + +int std::type_info::__compare(const type_info &__rhs) const _NOEXCEPT { + if (&__data == &__rhs.__data) + return 0; + return strcmp(&__data.__decorated_name[1], &__rhs.__data.__decorated_name[1]); +} + +const char *std::type_info::name() const _NOEXCEPT { + // TODO(compnerd) cache demangled &__data.__decorated_name[1] + return &__data.__decorated_name[1]; +} + +size_t std::type_info::hash_code() const _NOEXCEPT { +#if defined(_WIN64) + constexpr size_t fnv_offset_basis = 14695981039346656037ull; + constexpr size_t fnv_prime = 10995116282110ull; +#else + constexpr size_t fnv_offset_basis = 2166136261ull; + constexpr size_t fnv_prime = 16777619ull; +#endif + + size_t value = fnv_offset_basis; + for (const char* c = &__data.__decorated_name[1]; *c; ++c) { + value ^= static_cast<size_t>(static_cast<unsigned char>(*c)); + value *= fnv_prime; + } + +#if defined(_WIN64) + value ^= value >> 32; +#endif + + return value; +} +#endif // _LIBCPP_ABI_MICROSOFT + // FIXME: Remove __APPLE__ default here once buildit is gone. -#if (!defined(_LIBCPP_ABI_MICROSOFT) && !defined(LIBCXX_BUILDING_LIBCXXABI) && \ - !defined(LIBCXXRT) && !defined(__GLIBCXX__) && \ - !defined(__APPLE__)) || \ - defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) // FIXME: remove this configuration. +// FIXME: Remove the _LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY configuration. +#if (!defined(LIBCXX_BUILDING_LIBCXXABI) && !defined(LIBCXXRT) && \ + !defined(__GLIBCXX__) && !defined(__APPLE__)) || \ + defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) std::type_info::~type_info() { } |