Enum ErrorSite 

#[non_exhaustive]
pub enum ErrorSite {
    MethodIndex(usize),
    Method(RelationshipId, usize),
    Relationship(RelationshipId),
    Cell(CellId),
    Conditional(ConditionalId),
}

Identifies a single sheet component an error implicates, for translating back to a source location. An Error’s sites() is an ordered list of these: the primary culprit first, followed by related context (e.g. the other method(s) and cell(s) involved in a structural conflict, or the remaining members of a cycle).

Examples

See the error example.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

MethodIndex(usize)

Index into the methods Vec passed to add_relationship, before any RelationshipId exists for it.

Method(RelationshipId, usize)

A method within an already-registered relationship.

Relationship(RelationshipId)

A relationship as a whole (no single method within it is implicated).

Cell(CellId)

A single cell, including the cell governed by a failing requirement.

Conditional(ConditionalId)

The live conditional whose match expression failed.

Trait Implementations

impl Clone for ErrorSite

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ErrorSite

impl Debug for ErrorSite

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

Formats the value using the given formatter.

impl Eq for ErrorSite

impl Hash for ErrorSite

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ErrorSite

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ErrorSite