Enum ContextAttachmentError 

#[non_exhaustive]
pub enum ContextAttachmentError {
    DuplicateAttachment,
    RoleOccupied(ContextAttachmentRole),
    MissingPlatform,
    ContextDropping,
}

Failure to register an attachment with a Context.

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.

DuplicateAttachment

An attachment with the same marker type is already active.

RoleOccupied(ContextAttachmentRole)

The exclusive platform or renderer role is already occupied.

MissingPlatform

A renderer cannot attach until a platform runtime is registered.

ContextDropping

Context teardown has already started.

Trait Implementations

impl Clone for ContextAttachmentError

fn clone(&self) -> ContextAttachmentError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContextAttachmentError

impl Debug for ContextAttachmentError

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

Formats the value using the given formatter.

impl Display for ContextAttachmentError

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

Formats the value using the given formatter.

impl Eq for ContextAttachmentError

impl Error for ContextAttachmentError

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 ContextAttachmentError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ContextAttachmentError