Struct ParseLangError 

pub struct ParseLangError(/* private fields */);

Error returned by LANG’s FromStr impl when the input is not a recognised language name.

Holds the offending input verbatim so wrapper layers can format their own user-facing message; mirrors ParseMetricError.

Implementations

impl ParseLangError

pub fn input(&self) -> &str

The rejected input that failed to parse as a language name.

Lets callers recover the offending string programmatically rather than scraping it out of the Display output. Mirrors ParseMetricError::input.

Trait Implementations

impl Clone for ParseLangError

fn clone(&self) -> ParseLangError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParseLangError

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

Formats the value using the given formatter.

impl Display for ParseLangError

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

Formats the value using the given formatter.

impl Eq for ParseLangError

impl Error for ParseLangError

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 ParseLangError

fn eq(&self, other: &ParseLangError) -> 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 StructuralPartialEq for ParseLangError