Enum ResolutionProjectionError 

pub enum ResolutionProjectionError {
    Contract(Box<ResolutionProjectionFailure>),
    KeyLimit {
        fact: &'static str,
        index: usize,
        requested: usize,
    },
}

Failure while deriving bounded canonical keys from parser facts.

Variants

Contract(Box<ResolutionProjectionFailure>)

An extracted or caller-supplied identity violated the graph contract.

KeyLimit

One source fact would exceed the bounded key fan-out.

Fields

fact: &'static str

Kind of parser fact being projected.

index: usize

Index in the owning symbol or relation collection when applicable.

requested: usize

Number of distinct keys requested by the fact.

Trait Implementations

impl Debug for ResolutionProjectionError

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

Formats the value using the given formatter.

impl Display for ResolutionProjectionError

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

Formats the value using the given formatter.

impl Error for ResolutionProjectionError

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 From<GraphContractError> for ResolutionProjectionError

fn from(value: GraphContractError) -> Self

Converts to this type from the input type.