pub enum TcError<K: Debug + Display> {
MissingTcEdge {
child: K,
parent: K,
grandparent: K,
},
HasCycle {
vertex_with_loop: K,
},
}
Expand description
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
Error raised when TCComputation::EnforceAlreadyComputed
finds that the
TC was in fact not already computed
Fields
§
child: K
Child entity at fault
§
parent: K
Parent entity at fault
§
grandparent: K
Grandparent entity at fault. This is a parent of parent
but not an
ancestor of child
.
HasCycle
Error raised when enforce_dag finds that the graph is not a DAG
Fields
§
vertex_with_loop: K
Because DAG enforcement can only be called after compute_tc/enforce_tc, a cycle will manifest as a vertex with a loop
Trait Implementations§
source§impl<K: Debug + Display> Error for TcError<K>
impl<K: Debug + Display> Error for TcError<K>
1.30.0 · source§fn source(&self) -> Option<&(dyn Error + 'static)>
fn source(&self) -> Option<&(dyn Error + 'static)>
Returns the lower-level source of this error, if any. Read more
1.0.0 · source§fn description(&self) -> &str
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
Auto Trait Implementations§
impl<K> Freeze for TcError<K>where
K: Freeze,
impl<K> RefUnwindSafe for TcError<K>where
K: RefUnwindSafe,
impl<K> Send for TcError<K>where
K: Send,
impl<K> Sync for TcError<K>where
K: Sync,
impl<K> Unpin for TcError<K>where
K: Unpin,
impl<K> UnwindSafe for TcError<K>where
K: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more