Enum ProjectionError 

pub enum ProjectionError {
    InvalidIdentifier(&'static str),
    DuplicateFact(FactId),
    MissingFact(FactId),
    UnknownProvider(ProjectionKindRef),
    DuplicateProvider(ProjectionKindRef),
    ConfigShapeMismatch,
    InvalidConfig(String),
    InvalidPathSelection(String),
    CodeIdentityMismatch,
    UnqualifiedProjector(String),
    UnavailableConfinement(String),
    UndeclaredAccess {
        accessed: FactId,
    },
    UnreadDependency(FactId),
    BudgetExceeded(&'static str),
    Canonical(String),
    MissingExplanation {
        conclusion: ConclusionId,
        fact: FactId,
    },
}

Fail-closed projection refusal with distinct policy boundaries.

Variants

InvalidIdentifier(&'static str)

An identifier was empty.

DuplicateFact(FactId)

A world declared the same fact twice.

MissingFact(FactId)

A selected fact was absent.

UnknownProvider(ProjectionKindRef)

No loaded provider owns the requested open kind.

DuplicateProvider(ProjectionKindRef)

More than one loaded provider claimed the same kind.

ConfigShapeMismatch

Loaded provider and requested config Shape disagree.

InvalidConfig(String)

Configuration did not satisfy its declared Shape.

InvalidPathSelection(String)

A path selector or logical path was not canonical or valid.

CodeIdentityMismatch

Provider code identity differs from qualified loaded code.

UnqualifiedProjector(String)

Projector qualification is missing or invalid.

UnavailableConfinement(String)

Required confinement is absent or unavailable.

UndeclaredAccess

Provider read and dependency declarations disagree.

Fields

accessed: FactId

Fact read without a matching dependency claim.

UnreadDependency(FactId)

Provider claimed a dependency it never read.

BudgetExceeded(&'static str)

A configured budget was exceeded.

Canonical(String)

Canonical projection identity could not be constructed.

MissingExplanation

A requested explanation path does not exist.

Fields

conclusion: ConclusionId

Requested conclusion.

fact: FactId

Requested leaf fact.

Trait Implementations

impl Clone for ProjectionError

fn clone(&self) -> ProjectionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectionError

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

Formats the value using the given formatter.

impl Display for ProjectionError

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

Formats the value using the given formatter.

impl Eq for ProjectionError

impl Error for ProjectionError

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 ProjectionError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProjectionError