83ce139721
We already have a clang-tidy check for making sure that `_LIBCPP_HIDE_FROM_ABI` is on free functions. This patch extends this to class members. The places where we don't check for `_LIBCPP_HIDE_FROM_ABI` are classes for which we have an instantiation in the library. Reviewed By: ldionne, Mordante, #libc Spies: jplehr, mikhail.ramalho, sstefan1, libcxx-commits, krytarowski, miyuki, smeenai Differential Revision: https://reviews.llvm.org/D142332
64 lines
2.5 KiB
C++
64 lines
2.5 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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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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#ifndef _LIBCPP___EXPECTED_BAD_EXPECTED_ACCESS_H
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#define _LIBCPP___EXPECTED_BAD_EXPECTED_ACCESS_H
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#include <__config>
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#include <__exception/exception.h>
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#include <__utility/move.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#if _LIBCPP_STD_VER >= 23
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _Err>
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class bad_expected_access;
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template <>
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class bad_expected_access<void> : public exception {
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protected:
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_LIBCPP_HIDE_FROM_ABI bad_expected_access() noexcept = default;
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_LIBCPP_HIDE_FROM_ABI bad_expected_access(const bad_expected_access&) = default;
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_LIBCPP_HIDE_FROM_ABI bad_expected_access(bad_expected_access&&) = default;
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_LIBCPP_HIDE_FROM_ABI bad_expected_access& operator=(const bad_expected_access&) = default;
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_LIBCPP_HIDE_FROM_ABI bad_expected_access& operator=(bad_expected_access&&) = default;
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_LIBCPP_HIDE_FROM_ABI_VIRTUAL ~bad_expected_access() override = default;
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public:
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// The way this has been designed (by using a class template below) means that we'll already
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// have a profusion of these vtables in TUs, and the dynamic linker will already have a bunch
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// of work to do. So it is not worth hiding the <void> specialization in the dylib, given that
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// it adds deployment target restrictions.
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_LIBCPP_HIDE_FROM_ABI_VIRTUAL const char* what() const noexcept override { return "bad access to std::expected"; }
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};
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template <class _Err>
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class bad_expected_access : public bad_expected_access<void> {
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public:
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_LIBCPP_HIDE_FROM_ABI explicit bad_expected_access(_Err __e) : __unex_(std::move(__e)) {}
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_LIBCPP_HIDE_FROM_ABI _Err& error() & noexcept { return __unex_; }
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_LIBCPP_HIDE_FROM_ABI const _Err& error() const& noexcept { return __unex_; }
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_LIBCPP_HIDE_FROM_ABI _Err&& error() && noexcept { return std::move(__unex_); }
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_LIBCPP_HIDE_FROM_ABI const _Err&& error() const&& noexcept { return std::move(__unex_); }
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private:
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_Err __unex_;
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};
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 23
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#endif // _LIBCPP___EXPECTED_BAD_EXPECTED_ACCESS_H
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