Enum GraphBuildError 

pub enum GraphBuildError<N, E> {
    DuplicateNode(N),
    DuplicateEdge(E),
    MissingNode {
        edge: E,
        node: N,
    },
    InputHasPredecessor(N),
    OutputHasSuccessor(N),
    Empty,
}

A checked graph-construction refusal.

Variants

DuplicateNode(N)

A stable node identity was supplied more than once.

DuplicateEdge(E)

A stable edge identity was supplied more than once.

MissingNode

An edge names a node absent from the graph.

Fields

edge: E

Rejected edge identity.

node: N

Missing endpoint identity.

InputHasPredecessor(N)

An input boundary has an in-graph predecessor.

OutputHasSuccessor(N)

An output boundary has an in-graph successor.

Empty

A graph without nodes cannot carry a meaningful identity.

Trait Implementations

impl<N: Clone, E: Clone> Clone for GraphBuildError<N, E>

fn clone(&self) -> GraphBuildError<N, E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<N: Debug, E: Debug> Debug for GraphBuildError<N, E>

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

Formats the value using the given formatter.

impl<N: Eq, E: Eq> Eq for GraphBuildError<N, E>

impl<N: PartialEq, E: PartialEq> PartialEq for GraphBuildError<N, E>

fn eq(&self, other: &GraphBuildError<N, E>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<N: PartialEq, E: PartialEq> StructuralPartialEq for GraphBuildError<N, E>