Enum RegisteredSystemError

pub enum RegisteredSystemError<I: SystemInput = (), O = ()> {
    SystemIdNotRegistered(SystemId<I, O>),
    SystemNotCached,
    Recursive(SystemId<I, O>),
    SelfRemove(SystemId<I, O>),
    InvalidParams {
        system: SystemId<I, O>,
        err: SystemParamValidationError,
    },
}

An operation with stored systems failed.

Variants

SystemIdNotRegistered(SystemId<I, O>)

A system was run by id, but no system with that id was found.

Did you forget to register it?

SystemNotCached

A cached system was removed by value, but no system with its type was found.

Did you forget to register it?

Recursive(SystemId<I, O>)

A system tried to run itself recursively.

SelfRemove(SystemId<I, O>)

A system tried to remove itself.

InvalidParams

System could not be run due to parameters that failed validation. This should not be considered an error if SystemParamValidationError::skipped is true.

Fields

system: SystemId<I, O>

The identifier of the system that was run.

err: SystemParamValidationError

The returned parameter validation error.

Trait Implementations

impl<I: SystemInput, O> Debug for RegisteredSystemError<I, O>

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

Formats the value using the given formatter.

impl<I: SystemInput, O> Display for RegisteredSystemError<I, O>

where SystemId<I, O>: Debug,

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

Formats the value using the given formatter.

impl<I: SystemInput, O> Error for RegisteredSystemError<I, O>

where 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.