Enum TcError

pub enum TcError<K: Debug + Display> {
    MissingTcEdge(MissingTcEdge<K>),
    HasCycle(HasCycle<K>),
}

Error type for errors raised during transitive closure computation. This error type is parametrized by a type K which is the type of a unique identifier for graph nodes and the type returned by get_key on the TCNode trait.

Variants

MissingTcEdge(MissingTcEdge<K>)

Error raised when TCComputation::EnforceAlreadyComputed finds that the TC was in fact not already computed

HasCycle(HasCycle<K>)

Error raised when enforce_dag finds that the graph is not a DAG

Trait Implementations

impl<K: Debug + Debug + Display> Debug for TcError<K>

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

Formats the value using the given formatter.

impl<K: Debug + Display> Diagnostic for TcError<K>

fn code<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Unique diagnostic code that can be used to look up more information about this Diagnostic. Ideally also globally unique, and documented in the toplevel crate’s documentation for easy searching. Rust path format (foo::bar::baz) is recommended, but more classic codes like E0123 or enums will work just fine.

fn severity(&self) -> Option<Severity>

Diagnostic severity. This may be used by ReportHandlers to change the display format of this diagnostic.

fn help<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

Additional help text related to this Diagnostic. Do you have any advice for the poor soul who’s just run into this issue?

fn url<'a>(&'a self) -> Option<Box<dyn Display + 'a>>

URL to visit for a more detailed explanation/help about this Diagnostic.

fn source_code(&self) -> Option<&dyn SourceCode>

Source code to apply this Diagnostic’s Diagnostic::labels to.

fn labels(&self) -> Option<Box<dyn Iterator<Item = LabeledSpan> + '_>>

Labels to apply to this Diagnostic’s Diagnostic::source_code

fn related<'a>( &'a self, ) -> Option<Box<dyn Iterator<Item = &'a dyn Diagnostic> + 'a>>

Additional related Diagnostics.

fn diagnostic_source(&self) -> Option<&dyn Diagnostic>

The cause of the error.

impl<K: Debug + Display> Display for TcError<K>

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

Formats the value using the given formatter.

impl<K: Debug + Display> Error for TcError<K>

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.

impl From<TcError<EntityUID>> for EntitiesError

fn from(value: TcError<EntityUID>) -> Self

Converts to this type from the input type.

impl From<TcError<EntityUID>> for TransitiveClosureError

fn from(v: TcError<EntityUID>) -> Self

Converts to this type from the input type.

impl<K: PartialEq + Debug + Display> PartialEq for TcError<K>

fn eq(&self, other: &TcError<K>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<K: Eq + Debug + Display> Eq for TcError<K>

impl<K: Debug + Display> StructuralPartialEq for TcError<K>