Enum StorageError 

pub enum StorageError {
    InvalidAccess,
    ReadOnly,
    AssetConsumed,
    AssetBorrowed,
    AssetReadOnly,
    IndexOutOfRange,
    OwnedFieldReadOnly,
    EmptyList,
}

Errors returned by storage operations.

Each variant maps to a specific Python exception via From<StorageError> for PyErr.

Variants

InvalidAccess

Accessed outside system execution (→ RuntimeError)

ReadOnly

Write on read-only component (→ RuntimeError)

AssetConsumed

Asset already consumed by Assets<T>.add() (→ RuntimeError)

AssetBorrowed

Can’t take ownership of borrowed asset (→ RuntimeError)

AssetReadOnly

Can’t modify read-only asset (→ RuntimeError)

IndexOutOfRange

List index out of range (→ IndexError)

OwnedFieldReadOnly

Mutation on a field extracted from an owned/temporary component (→ RuntimeError)

EmptyList

Pop from empty list (→ IndexError)

Trait Implementations

impl Clone for StorageError

fn clone(&self) -> StorageError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StorageError

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

Formats the value using the given formatter.

impl Display for StorageError

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

Formats the value using the given formatter.

impl Error for StorageError

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.