Enum RegisterError 

#[non_exhaustive]
pub enum RegisterError {
    Extension {
        kind: &'static str,
        format: &'static str,
        earlier: &'static str,
        extension: &'static str,
    },
    Id {
        kind: &'static str,
        format: &'static str,
    },
    BadExtension {
        kind: &'static str,
        format: &'static str,
        extension: &'static str,
    },
    Reserved {
        kind: &'static str,
        format: &'static str,
    },
    SectionTwice {
        section: &'static str,
    },
    SectionWithoutDefault {
        section: &'static str,
    },
    SectionAllowsUnknownFields {
        section: &'static str,
    },
}

Why a format, or a section of import settings, could not be registered. More reasons may come (ADR-0039).

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.

Extension

It claims an extension an earlier format of its kind claims.

Fields

kind: &'static str

The kind.

format: &'static str

The format refused.

earlier: &'static str

The format that claims the extension.

extension: &'static str

The extension.

Id

An earlier format of its kind has its id.

Fields

kind: &'static str

The kind.

format: &'static str

The id.

BadExtension

One of its extensions isn’t lowercase, has a dot, or is empty.

Fields

kind: &'static str

The kind.

format: &'static str

The format refused.

extension: &'static str

The extension.

Reserved

It claims meta, the extension of import settings files.

Fields

kind: &'static str

The kind.

format: &'static str

The format refused.

SectionTwice

A section of import settings of its name is registered already.

Fields

section: &'static str

The section’s name.

SectionWithoutDefault

The section’s type can’t read (): a field has no default.

Fields

section: &'static str

The section’s name.

SectionAllowsUnknownFields

The section’s type reads a field it doesn’t have, so a typo would go unseen.

Fields

section: &'static str

The section’s name.

Trait Implementations

impl Clone for RegisterError

fn clone(&self) -> RegisterError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RegisterError

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

Formats the value using the given formatter.

impl Display for RegisterError

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

Formats the value using the given formatter.

impl Eq for RegisterError

impl Error for RegisterError

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 RegisterError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RegisterError