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AK: Elaborate the Error constructors a bit

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The old constraints were making clang mad, so express them in a less
complex way.
This commit is contained in:
Ali Mohammad Pur 2022-12-09 20:08:09 +03:30 • committed by Ali Mohammad Pur
parent 099a6bc45f
commit 58252a7684
Notes: sideshowbarker 2024-07-17 07:38:17 +09:00
1 changed files with 25 additions and 1 deletions
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26
AK/Error.h
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@ -81,9 +81,33 @@ public:
{
}
ALWAYS_INLINE ErrorOr(ErrorOr&&) = default;
ALWAYS_INLINE ErrorOr(ErrorOr const&) = default;
ALWAYS_INLINE ErrorOr& operator=(ErrorOr&&) = default;
ALWAYS_INLINE ErrorOr& operator=(ErrorOr const&) = default;
template<typename U>
ALWAYS_INLINE ErrorOr(ErrorOr<U, ErrorType> const& value)
: m_value_or_error(value.m_value_or_error.visit([](U const& v) -> Variant<T, ErrorType> { return v; }, [](ErrorType const& error) -> Variant<T, ErrorType> { return error; }))
{
}
template<typename U>
ALWAYS_INLINE ErrorOr(ErrorOr<U, ErrorType>& value)
: m_value_or_error(value.m_value_or_error.visit([](U& v) { return Variant<T, ErrorType>(move(v)); }, [](ErrorType& error) { return Variant<T, ErrorType>(move(error)); }))
{
}
template<typename U>
ALWAYS_INLINE ErrorOr(ErrorOr<U, ErrorType>&& value)
: m_value_or_error(value.visit([](U& v) { return Variant<T, ErrorType>(move(v)); }, [](ErrorType& error) { return Variant<T, ErrorType>(move(error)); }))
{
}
template<typename U>
ALWAYS_INLINE ErrorOr(U&& value)
requires(!IsSame<RemoveCVReference<U>, ErrorOr<T, ErrorType>>)
requires(
requires { T(declval<U>()); } || requires { ErrorType(declval<RemoveCVReference<U>>()); })
: m_value_or_error(forward<U>(value))
{
}