struct OkOrFail

template <typename T, typename E, bool include_message>

struct OkOrFail

Defined at line 401 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

Public Methods

bool IsOk (const V & val)

Checks if V is ok or fail

Defined at line 413 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

T Unwrap (V && val)

Turns V into a success value

Defined at line 416 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

OkOrFail<V> Fail (V && v)

Consumes V when it's a fail value

Defined at line 426 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

Result<std::conditional_t<impl::IsNumeric<C>, impl::Never, C>, E, include_message> operator android::base::expected<std::conditional<impl::IsNumeric<__decay(decltype(std::declval<android::base::expected<type-parameter-0-0, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > >().error().code()))>, android::base::impl::Never, __decay(decltype(std::declval<android::base::expected<type-parameter-0-0, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > >().error().code()))>::type, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > ()

We specialize as much as possible to avoid ambiguous conversion with templated expected ctor.

We don't need this specialization if `C` is numeric because that case is already covered by

`NumericConversions`.

Defined at line 434 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

Result<std::conditional_t<impl::IsNumeric<C>, impl::Never, C>, E, include_message> operator android::base::expected<std::conditional<impl::IsNumeric<__decay(decltype(std::declval<android::base::expected<type-parameter-0-0, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > >().error().code()))>, android::base::impl::Never, __decay(decltype(std::declval<android::base::expected<type-parameter-0-0, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > >().error().code()))>::type, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > ()

Defined at line 438 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

template <Universal U>
Result<U, E, include_message> operator android::base::expected<type-parameter-1-0, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > ()

The idea here is to match this template method to any type (not simply trivial types).

The reason for including a constraint is to take advantage of the fact that a constrained

method always has strictly lower precedence than a non-constrained method in template

specialization rules (thus avoiding ambiguity). So we use a universally matching constraint to

mark this function as less preferable (but still accepting of all types).

Defined at line 449 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

template <Universal U>
Result<U, E, include_message> operator android::base::expected<type-parameter-1-0, android::base::ResultError<type-parameter-0-1, value-parameter-0-2> > ()

Defined at line 453 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h

const std::string & ErrorMessage (const V & val)

Defined at line 467 of file ../../third_party/android/platform/system/libbase/include/android-base/result.h