Enum TransformResError 

pub enum TransformResError<E> {
    TransformFunctionError(E),
    NonUniqueOutput(NonUniqueTransformOutputError),
}

Wraps a user-provided error type to also allow returning NonUniqueTransformOutputError.

E is the transform function’s error type. That is, if the transform function provided returns Result<U, E>, AtomTable<V, I>::try_transform_res will have an error type of TransformResError<E>, with an overall return type of Result<AtomTable<U, I>, TransformResError<E>>.

Used by AtomTable<V, I>::try_transform_res

Variants

TransformFunctionError(E)

Wraps a user-provided error type used by a transform function.

NonUniqueOutput(NonUniqueTransformOutputError)

Wraps NonUniqueTransformOutputError, returned when your function does not produce unique outputs.

Implementations

impl<E> TransformResError<E>

pub const fn as_non_unique_output( &self, ) -> Option<NonUniqueTransformOutputError>

Gets the contained NonUniqueTransformOutputError if applicable.

Returns Some(NonUniqueTransformOutputError) if this is TransformResError::NonUniqueOutput, None otherwise.

pub const fn as_transform_function_error(&self) -> Option<&E>

Gets the contained error returned by the provided function, if applicable.

Returns Some if this is TransformResError::TransformFunctionError, None otherwise.

Trait Implementations

impl<E: Debug> Debug for TransformResError<E>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E> Display for TransformResError<E>

where E: Display,

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E> Error for TransformResError<E>

where E: Error + 'static, Self: Debug + Display,

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl<E> From<NonUniqueTransformOutputError> for TransformResError<E>

fn from(source: NonUniqueTransformOutputError) -> Self

Converts to this type from the input type.