Struct PromotionError 

pub struct PromotionError { /* private fields */ }

One promotion failure with a stable code and contextual explanation.

Implementations

impl PromotionError

pub fn new(code: FailureCode, message: impl Into<String>) -> Self

Creates a failure at a specific evidence boundary.

pub const fn code(&self) -> FailureCode

Returns the stable failure code.

pub fn message(&self) -> &str

Returns the human-readable context without changing its stable code.

Trait Implementations

impl Clone for PromotionError

fn clone(&self) -> PromotionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PromotionError

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

Formats the value using the given formatter.

impl Display for PromotionError

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

Formats the value using the given formatter.

impl Error for PromotionError

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 PartialEq for PromotionError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for PromotionError

impl StructuralPartialEq for PromotionError