Enum DataProviderError

#[non_exhaustive]
pub enum DataProviderError<E>
where
    E: Display + Debug,
{
    InvalidSymbol(String),
    Other(E),
}

Error returned by DataProvider methods.

Use std::convert::Infallible as E when the provider can only fail with InvalidSymbol and never with Other.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidSymbol(String)

The requested symbol does not exist or is not supported.

When request.security() is called with ignore_invalid_symbol = true, this causes the function to return na instead of a runtime error.

Other(E)

Any other provider-side error.

Trait Implementations

impl<E> Debug for DataProviderError<E>

where E: Display + Debug + Debug,

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

Formats the value using the given formatter.

impl<E> Display for DataProviderError<E>

where E: Display + Debug + Display,

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

Formats the value using the given formatter.

impl<E> Error for DataProviderError<E>

where E: Display + Debug, 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.