c3656afdf1
This reverts commit c861fe8a71e64f3d2108c58147e7375cd9314521. Unfortunately, this use of hidden visibility attributes causes user-defined specializations of standard-library types to also be marked hidden by default, which is incorrect. See discussion thread on #131156. ...and also reverts the follow-up commits: Revert "[libc++] Add explicit ABI annotations to functions from the block runtime declared in <__functional/function.h> (#140592)" This reverts commit 3e4c9dc299c35155934688184319d391b298fff7. Revert "[libc++] Make ABI annotations explicit for windows-specific code (#140507)" This reverts commit f73287e623a6c2e4a3485832bc3e10860cd26eb5. Revert "[libc++][NFC] Replace a few "namespace std" with the correct macro (#140510)" This reverts commit 1d411f27c769a32cb22ce50b9dc4421e34fd40dd.
130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
// -*- 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___SYSTEM_ERROR_ERROR_CONDITION_H
|
|
#define _LIBCPP___SYSTEM_ERROR_ERROR_CONDITION_H
|
|
|
|
#include <__compare/ordering.h>
|
|
#include <__config>
|
|
#include <__functional/hash.h>
|
|
#include <__functional/unary_function.h>
|
|
#include <__system_error/errc.h>
|
|
#include <__system_error/error_category.h>
|
|
#include <string>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
template <class _Tp>
|
|
struct is_error_condition_enum : public false_type {};
|
|
|
|
#if _LIBCPP_STD_VER >= 17
|
|
template <class _Tp>
|
|
inline constexpr bool is_error_condition_enum_v = is_error_condition_enum<_Tp>::value;
|
|
#endif
|
|
|
|
template <>
|
|
struct is_error_condition_enum<errc> : true_type {};
|
|
|
|
#ifdef _LIBCPP_CXX03_LANG
|
|
template <>
|
|
struct is_error_condition_enum<errc::__lx> : true_type {};
|
|
#endif
|
|
|
|
namespace __adl_only {
|
|
// Those cause ADL to trigger but they are not viable candidates,
|
|
// so they are never actually selected.
|
|
void make_error_condition() = delete;
|
|
} // namespace __adl_only
|
|
|
|
class _LIBCPP_EXPORTED_FROM_ABI error_condition {
|
|
int __val_;
|
|
const error_category* __cat_;
|
|
|
|
public:
|
|
_LIBCPP_HIDE_FROM_ABI error_condition() _NOEXCEPT : __val_(0), __cat_(&generic_category()) {}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI error_condition(int __val, const error_category& __cat) _NOEXCEPT
|
|
: __val_(__val),
|
|
__cat_(&__cat) {}
|
|
|
|
template <class _Ep, __enable_if_t<is_error_condition_enum<_Ep>::value, int> = 0>
|
|
_LIBCPP_HIDE_FROM_ABI error_condition(_Ep __e) _NOEXCEPT {
|
|
using __adl_only::make_error_condition;
|
|
*this = make_error_condition(__e);
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI void assign(int __val, const error_category& __cat) _NOEXCEPT {
|
|
__val_ = __val;
|
|
__cat_ = &__cat;
|
|
}
|
|
|
|
template <class _Ep, __enable_if_t<is_error_condition_enum<_Ep>::value, int> = 0>
|
|
_LIBCPP_HIDE_FROM_ABI error_condition& operator=(_Ep __e) _NOEXCEPT {
|
|
using __adl_only::make_error_condition;
|
|
*this = make_error_condition(__e);
|
|
return *this;
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI void clear() _NOEXCEPT {
|
|
__val_ = 0;
|
|
__cat_ = &generic_category();
|
|
}
|
|
|
|
_LIBCPP_HIDE_FROM_ABI int value() const _NOEXCEPT { return __val_; }
|
|
|
|
_LIBCPP_HIDE_FROM_ABI const error_category& category() const _NOEXCEPT { return *__cat_; }
|
|
string message() const;
|
|
|
|
_LIBCPP_HIDE_FROM_ABI explicit operator bool() const _NOEXCEPT { return __val_ != 0; }
|
|
};
|
|
|
|
inline _LIBCPP_HIDE_FROM_ABI error_condition make_error_condition(errc __e) _NOEXCEPT {
|
|
return error_condition(static_cast<int>(__e), generic_category());
|
|
}
|
|
|
|
inline _LIBCPP_HIDE_FROM_ABI bool operator==(const error_condition& __x, const error_condition& __y) _NOEXCEPT {
|
|
return __x.category() == __y.category() && __x.value() == __y.value();
|
|
}
|
|
|
|
#if _LIBCPP_STD_VER <= 17
|
|
|
|
inline _LIBCPP_HIDE_FROM_ABI bool operator!=(const error_condition& __x, const error_condition& __y) _NOEXCEPT {
|
|
return !(__x == __y);
|
|
}
|
|
|
|
inline _LIBCPP_HIDE_FROM_ABI bool operator<(const error_condition& __x, const error_condition& __y) _NOEXCEPT {
|
|
return __x.category() < __y.category() || (__x.category() == __y.category() && __x.value() < __y.value());
|
|
}
|
|
|
|
#else // _LIBCPP_STD_VER <= 17
|
|
|
|
inline _LIBCPP_HIDE_FROM_ABI strong_ordering
|
|
operator<=>(const error_condition& __x, const error_condition& __y) noexcept {
|
|
if (auto __c = __x.category() <=> __y.category(); __c != 0)
|
|
return __c;
|
|
return __x.value() <=> __y.value();
|
|
}
|
|
|
|
#endif // _LIBCPP_STD_VER <= 17
|
|
|
|
template <>
|
|
struct hash<error_condition> : public __unary_function<error_condition, size_t> {
|
|
_LIBCPP_HIDE_FROM_ABI size_t operator()(const error_condition& __ec) const _NOEXCEPT {
|
|
return static_cast<size_t>(__ec.value());
|
|
}
|
|
};
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP___SYSTEM_ERROR_ERROR_CONDITION_H
|