Enum ExtensionsError 

#[non_exhaustive]
pub enum ExtensionsError {
    Io(String),
    Invalid(String),
    Backend(String),
    Unsupported(String),
}

Shared error type for all extension traits.

Non-exhaustive by design: Ent backends may surface new failure classes via ExtensionsError::Backend rather than new variants.

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.

Io(String)

The backing store or file could not be read/written.

Invalid(String)

Input or stored data was malformed (e.g. config parse failure).

Backend(String)

The backend itself failed (connection lost, sealed, …).

Unsupported(String)

The operation is not supported by this implementation.

Trait Implementations

impl Clone for ExtensionsError

fn clone(&self) -> ExtensionsError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExtensionsError

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

Formats the value using the given formatter.

impl Display for ExtensionsError

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

Formats the value using the given formatter.

impl Error for ExtensionsError

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 From<ConfigError> for ExtensionsError

fn from(e: ConfigError) -> Self

Config parse failures map to ExtensionsError::Invalid, preserving ConfigError’s path-precise Display (“config error at {path}: {message}”).

impl From<Error> for ExtensionsError

fn from(e: Error) -> Self

I/O failures map to the ExtensionsError::Io class, carrying the OS error message. Call sites needing more context (e.g. the file path) still hand-format — this conversion covers the common case (#128, DW-004 review).

impl From<ExtensionsError> for Error

fn from(e: ExtensionsError) -> Self

Converts to this type from the input type.

impl PartialEq for ExtensionsError

fn eq(&self, other: &ExtensionsError) -> 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 ExtensionsError

impl StructuralPartialEq for ExtensionsError