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156ab87500
See: * https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319 * https://discourse.llvm.org/t/rfc-project-hand-in-hand-llvm-libc-libc-code-sharing/77701 We're dropping support for C++03 for Zig due to the first change; it would be insane to ship 1018 duplicate header files just for this outdated use case. As a result of the second change, I had to bring in a subset of the headers from llvm-libc since libc++ now depends on these. Hopefully we can continue to get away with not copying the entirety of llvm-libc.
61 lines
1.7 KiB
C++
Vendored
61 lines
1.7 KiB
C++
Vendored
// -*- 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
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#define _LIBCPP_EXPECTED
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/*
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Header <expected> synopsis
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namespace std {
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// [expected.unexpected], class template unexpected
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template<class E> class unexpected;
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// [expected.bad], class template bad_expected_access
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template<class E> class bad_expected_access;
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// [expected.bad.void], specialization for void
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template<> class bad_expected_access<void>;
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// in-place construction of unexpected values
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struct unexpect_t {
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explicit unexpect_t() = default;
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};
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inline constexpr unexpect_t unexpect{};
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// [expected.expected], class template expected
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template<class T, class E> class expected;
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// [expected.void], partial specialization of expected for void types
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template<class T, class E> requires is_void_v<T> class expected<T, E>;
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}
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*/
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#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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# include <__cxx03/expected>
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#else
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# include <__config>
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# if _LIBCPP_STD_VER >= 23
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# include <__expected/bad_expected_access.h>
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# include <__expected/expected.h>
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# include <__expected/unexpect.h>
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# include <__expected/unexpected.h>
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# endif
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# include <version>
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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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#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
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#endif // _LIBCPP_EXPECTED
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