llvm/Support/ErrorOr.h

50 /// is held in a std::reference_wrapper<std::remove_reference<T>::type>, and
59   static const bool isRef = std::is_reference<T>::value;
61   using wrap = std::reference_wrapper<typename std::remove_reference<T>::type>;
64   using storage_type = typename std::conditional<isRef, wrap, T>::type;
67   using reference = typename std::remove_reference<T>::type &;
68   using const_reference = const typename std::remove_reference<T>::type &;
69   using pointer = typename std::remove_reference<T>::type *;
70   using const_pointer = const typename std::remove_reference<T>::type *;
75           typename std::enable_if<std::is_error_code_enum<E>::value ||
76                                       std::is_error_condition_enum<E>::value,
79     new (getErrorStorage()) std::error_code(make_error_code(ErrorCode));
82   ErrorOr(std::error_code EC) : HasError(true) {
83     new (getErrorStorage()) std::error_code(EC);
88           typename std::enable_if<std::is_convertible<OtherT, T>::value>::type
91     new (getStorage()) storage_type(std::forward<OtherT>(Val));
101       typename std::enable_if<std::is_convertible<OtherT, T>::value>::type * =
109       typename std::enable_if<
110           !std::is_convertible<OtherT, const T &>::value>::type * = nullptr) {
115     moveConstruct(std::move(Other));
121       typename std::enable_if<std::is_convertible<OtherT, T>::value>::type * =
123     moveConstruct(std::move(Other));
131       typename std::enable_if<!std::is_convertible<OtherT, T>::value>::type * =
133     moveConstruct(std::move(Other));
142     moveAssign(std::move(Other));
159   std::error_code getError() const {
160     return HasError ? *getErrorStorage() : std::error_code();
185       new (getErrorStorage()) std::error_code(Other.getError());
213       new (getStorage()) storage_type(std::move(*Other.getStorage()));
217       new (getErrorStorage()) std::error_code(Other.getError());
227     new (this) ErrorOr(std::move(Other));
252   std::error_code *getErrorStorage() {
254     return reinterpret_cast<std::error_code *>(ErrorStorage.buffer);
257   const std::error_code *getErrorStorage() const {
263     AlignedCharArrayUnion<std::error_code> ErrorStorage;
269 typename std::enable_if<std::is_error_code_enum<E>::value ||
270                             std::is_error_condition_enum<E>::value,