Enum InstanceError 

pub enum InstanceError {
    CaptureMismatch {
        expected: usize,
        actual: usize,
    },
    CaptureNameMismatch {
        index: usize,
        expected: String,
        actual: String,
    },
    ManagedEdge(StrongEdgeMutationError),
}

Failure to construct a managed function instance.

Variants

CaptureMismatch

Capture cells must exactly follow the plan’s declared slots.

Fields

expected: usize

Number of capture descriptors in the plan.

actual: usize

Number of supplied managed binding cells.

CaptureNameMismatch

A supplied cell did not match the corresponding frozen capture slot.

Fields

index: usize

Zero-based position in the frozen capture sequence.

expected: String

Name declared by the immutable function plan.

actual: String

Name carried by the supplied shared binding cell.

ManagedEdge(StrongEdgeMutationError)

The shared managed node refused a capture edge.

Trait Implementations

impl Debug for InstanceError

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

Formats the value using the given formatter.

impl Display for InstanceError

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

Formats the value using the given formatter.

impl Error for InstanceError

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.