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[SYCL] Add copy/move ctors and assignment operators to sycl::detail::… #19834

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Merged
merged 1 commit into from
Aug 21, 2025
+24 −0
Merged

[SYCL] Add copy/move ctors and assignment operators to sycl::detail::… #19834

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24 changes: 24 additions & 0 deletions sycl/include/sycl/detail/optional.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,15 @@ template <typename T> class optional {
public:
constexpr optional() noexcept {}
constexpr optional(std::nullopt_t) noexcept : optional() {}
constexpr optional(const optional &Other)
: ContainsValue{Other.ContainsValue} {
if (Other.ContainsValue)
new (Storage) T(Other.value());
}
constexpr optional(optional &&Other) : ContainsValue{Other.ContainsValue} {
new (Storage) T(std::move(Other.value()));
Other.ContainsValue = false;
}

template <typename U>
constexpr optional(const optional<U> &Other)
Expand Down Expand Up @@ -60,6 +69,21 @@ template <typename T> class optional {
return *this;
}

optional &operator=(const optional<T> &Other) {
if (has_value())
reinterpret_cast<T *>(Storage)->~T();
ContainsValue = Other.has_value();
new (Storage) T(Other.value());
return *this;
}
optional &operator=(optional<T> &&Other) noexcept {
if (has_value())
reinterpret_cast<T *>(Storage)->~T();
ContainsValue = Other.has_value();
new (Storage) T(std::move(Other.value()));
return *this;
}

template <typename U> optional &operator=(const optional<U> &Other) {
if (has_value())
reinterpret_cast<T *>(Storage)->~T();
Expand Down