Enum Lane 

pub enum Lane {
    Rejected,
    Denied,
    Transient,
    Fatal,
}

Which of the four lanes an outcome travels in.

Variants

Rejected

Denied

Transient

Fatal

Implementations

impl Lane

pub fn of(e: &(dyn Error + 'static)) -> Option<Lane>

Walks source() looking for a concrete lane payload, reporting only which lane it found. Allocation-free, so it is the one to reach for in a predicate; find_in (private — reached through Fault::classify) is the same walk when you need the payload.

None means either the chain is not lanes-aware, or it bottoms out in a Rejected(D) whose D is not known here — a caller that needs the rejected value must go through crate::Failure instead.

A bare Exhausted (not wrapped in a Fatal, which is how [crate::profile::NarrowTransient] always produces one) is still Fatal: it is a terminal outcome by construction, and its own source() is the last Transient it gave up on, which this walker must not mistake for the chain’s own classification.

impl Lane

pub fn as_str(self) -> &'static str

Trait Implementations

impl Clone for Lane

fn clone(&self) -> Lane

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Lane

impl Debug for Lane

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

Formats the value using the given formatter.

impl Display for Lane

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

Formats the value using the given formatter.

impl Eq for Lane

impl Hash for Lane

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Lane

fn eq(&self, other: &Lane) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Lane