Enum Error 

#[non_exhaustive]
pub enum Error {
    MissingField(&'static str),
    ShortRow {
        field: &'static str,
        row: usize,
        expected: usize,
        got: usize,
    },
    BadFloat {
        field: &'static str,
        row: usize,
        value: String,
    },
    BadId {
        field: &'static str,
        row: usize,
        message: String,
    },
    UnbalancedBrackets(&'static str),
    UnknownBus {
        bus_id: BusId,
        element_index: usize,
    },
    ZeroImpedance {
        row: usize,
    },
    NonFiniteSusceptance {
        row: usize,
    },
    DegenerateTap {
        row: usize,
        tap: f64,
    },
    MissingGenCost {
        gen_index: usize,
    },
    NonFiniteGenCost {
        field: &'static str,
        value: f64,
    },
    InvalidGenCostPatch {
        row: usize,
        reason: String,
    },
    GenCostCountMismatch {
        gens: usize,
        gencost: usize,
    },
    DcLineCostCountMismatch {
        dclines: usize,
        dclinecost: usize,
    },
    NoReferenceBus,
    ReferenceBusCount {
        found: usize,
    },
    InvalidBaseMva {
        base: f64,
    },
    InvalidNormalizeOption {
        field: &'static str,
        value: f64,
    },
    UngroundedComponent {
        components: usize,
    },
    ClosedSwitch {
        row: usize,
        from: BusId,
        to: BusId,
        closed: usize,
    },
    BusMergeRule {
        message: String,
    },
    MergedFlowShape {
        what: &'static str,
        expected: usize,
        got: usize,
    },
    Io(Error),
    UnlocatedElements {
        buses: usize,
        branches: usize,
    },
    FormatRead {
        format: &'static str,
        message: String,
    },
    Emit {
        format: &'static str,
        message: String,
    },
    UnknownFormat(String),
    WriteUnsupported {
        format: &'static str,
    },
}

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.

MissingField(&'static str)

ShortRow

Fields

field: &'static str

row: usize

expected: usize

got: usize

BadFloat

Fields

field: &'static str

row: usize

value: String

BadId

Fields

field: &'static str

row: usize

message: String

UnbalancedBrackets(&'static str)

UnknownBus

Fields

bus_id: BusId

element_index: usize

ZeroImpedance

Fields

row: usize

NonFiniteSusceptance

Fields

row: usize

DegenerateTap

Fields

row: usize

tap: f64

MissingGenCost

Fields

gen_index: usize

NonFiniteGenCost

Fields

field: &'static str

value: f64

InvalidGenCostPatch

Fields

row: usize

reason: String

GenCostCountMismatch

Fields

gens: usize

gencost: usize

DcLineCostCountMismatch

Fields

dclines: usize

dclinecost: usize

NoReferenceBus

Normalization could not establish a reference bus. The reference set is derived from generator presence: a bus keeps REF only while it hosts an in-service generator, so a REF typed bus with no generator does not count, and with no in-service generator there is nothing to promote.

ReferenceBusCount

An index or solver table build needs exactly one reference bus.

Fields

found: usize

InvalidBaseMva

Fields

base: f64

InvalidNormalizeOption

Fields

field: &'static str

value: f64

UngroundedComponent

Fields

components: usize

ClosedSwitch

Closed switches join buses that a calculation which models no switches would leave apart: raised by IndexedNetwork::check_closed_switches and by normalization under ClosedSwitchPolicy::Refuse or when its requested merge leaves an eligible closed switch in place.

Fields

row: usize

from: BusId

to: BusId

closed: usize

BusMergeRule

A BusMergeRule that cannot be applied.

Fields

message: String

MergedFlowShape

A merged network solution whose shape does not match the merge.

Fields

what: &'static str

expected: usize

got: usize

Io(Error)

UnlocatedElements

Fields

buses: usize

branches: usize

FormatRead

Fields

format: &'static str

message: String

Emit

Fields

format: &'static str

message: String

UnknownFormat(String)

WriteUnsupported

The target format is recognized but read only: it has no writer. A same-format write can still echo retained source; everything else is refused with this error rather than a misleading Error::UnknownFormat.

Fields

format: &'static str

Implementations

impl Error

pub fn reference_bus_count(found: usize) -> Self

An index or solver table build needs exactly one reference bus and the case states found.

pub fn code(&self) -> &'static DiagnosticInfo

The registry entry for this error. The match is exhaustive over the variant set (no wildcard), so adding an Error variant is a compile error here until it is coded.

pub fn category(&self) -> ErrorCategory

Classify this error. The match is exhaustive over the variant set (no wildcard), so adding an Error variant is a compile error here until it is categorized — categorization can’t silently drift as the enum grows.

Trait Implementations

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.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.