Enum Error 

#[non_exhaustive]
pub enum Error {
    Tolerance(f64),
    UnknownLayer(LayerId),
    GeometryKind {
        layer: LayerId,
        name: String,
        fid: i64,
        expected: GeometryKind,
        found: GeometryKind,
    },
    NonFinite {
        layer: LayerId,
        name: String,
        fid: i64,
    },
    DuplicateFid {
        layer: LayerId,
        name: String,
        fid: i64,
    },
    Inputs {
        rule: Rule,
        expected: usize,
    },
    SameLayer {
        rule: Rule,
        layer: LayerId,
    },
    NonFiniteLine {
        index: usize,
    },
}

Operational failures are distinct from topology violations.

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.

Tolerance(f64)

A negative or non-finite planar tolerance.

UnknownLayer(LayerId)

A layer index not registered in the topology.

GeometryKind

A feature incompatible with a rule’s required geometry family.

Fields

layer: LayerId

Topology-scoped layer ID.

name: String

Caller-supplied layer name, which need not be unique.

fid: i64

Signed input feature ID.

expected: GeometryKind

Required geometry family.

found: GeometryKind

Actual geometry family.

NonFinite

An input feature contains an infinite or NaN coordinate.

Fields

layer: LayerId

Topology-scoped layer ID.

name: String

Caller-supplied layer name, which need not be unique.

fid: i64

Signed input feature ID.

DuplicateFid

Two features within one layer share an ID.

Fields

layer: LayerId

Topology-scoped layer ID.

name: String

Caller-supplied layer name, which need not be unique.

fid: i64

Repeated signed feature ID.

Inputs

An incorrect number of input layers for a rule.

Fields

rule: Rule

Rule being registered.

expected: usize

Required number of distinct input layers.

SameLayer

One layer supplied as both inputs of a binary rule.

Fields

rule: Rule

Rule being registered.

layer: LayerId

Layer supplied twice.

NonFiniteLine

A line utility input contains an infinite or NaN coordinate.

Fields

index: usize

Zero-based position in the input lines.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.