Enum ReductionError 

pub enum ReductionError {
    Construction {
        source_problem: &'static str,
        target_problem: &'static str,
        cause: ConstructionError,
    },
    IntegerOverflow {
        source_problem: &'static str,
        target_problem: &'static str,
        operation: String,
    },
    NonFiniteResult {
        source_problem: &'static str,
        target_problem: &'static str,
        operation: String,
    },
    InexactFloatConversion {
        source_problem: &'static str,
        target_problem: &'static str,
        cause: ExactI64ToF64Error,
    },
    InvalidTarget {
        source_problem: &'static str,
        target_problem: &'static str,
        message: String,
    },
    SourceTypeMismatch {
        source_problem: &'static str,
        target_problem: &'static str,
        expected: &'static str,
    },
}

Failure to construct a target instance for a registered reduction edge.

Variants

Construction

Fields

source_problem: &'static str

target_problem: &'static str

cause: ConstructionError

IntegerOverflow

Fields

source_problem: &'static str

target_problem: &'static str

operation: String

NonFiniteResult

Fields

source_problem: &'static str

target_problem: &'static str

operation: String

InexactFloatConversion

Fields

source_problem: &'static str

target_problem: &'static str

cause: ExactI64ToF64Error

InvalidTarget

Fields

source_problem: &'static str

target_problem: &'static str

message: String

SourceTypeMismatch

Fields

source_problem: &'static str

target_problem: &'static str

expected: &'static str

Implementations

impl ReductionError

pub fn source_type_mismatch<S: Problem, T: Problem>() -> Self

Report that a type-erased executor received the wrong source problem type.

pub fn integer_overflow<S: Problem, T: Problem>( operation: impl Into<String>, ) -> Self

Report integer overflow while constructing a reduction target.

pub fn inexact_float_conversion<S: Problem, T: Problem>( cause: ExactI64ToF64Error, ) -> Self

Report that an exact integer cannot be represented in a floating-point target field.

pub fn non_finite_result<S: Problem, T: Problem>( operation: impl Into<String>, ) -> Self

Report non-finite arithmetic while constructing a reduction target.

pub fn invalid_target<S: Problem, T: Problem>( message: impl Into<String>, ) -> Self

Report that derived data cannot form a valid reduction target.

pub fn construction<S: Problem, T: Problem>(cause: ConstructionError) -> Self

Preserve a target constructor’s validation error with edge context.

Trait Implementations

impl Clone for ReductionError

fn clone(&self) -> ReductionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReductionError

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

Formats the value using the given formatter.

impl Display for ReductionError

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

Formats the value using the given formatter.

impl Eq for ReductionError

impl Error for ReductionError

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<ReductionError> for ILPSolveError

fn from(source: ReductionError) -> Self

Converts to this type from the input type.

impl PartialEq for ReductionError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ReductionError