Enum UnitResolveError 

pub enum UnitResolveError {
    UnknownUnit(UnitRef),
    DynamicScale(UnitRef),
    Overflow(RationalError),
}

Why a unit expression could not be resolved.

Carries the failing unit name so callers can produce a precise diagnostic instead of re-scanning the expression to find it (the old Ok(None) return conflated unknown names with dynamic scales).

Variants

UnknownUnit(UnitRef)

A unit name in the expression is not registered.

DynamicScale(UnitRef)

A unit in the expression has a runtime-dependent scale.

Overflow(RationalError)

Dimension exponent arithmetic overflowed.

Trait Implementations

impl Clone for UnitResolveError

fn clone(&self) -> UnitResolveError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UnitResolveError

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

Formats the value using the given formatter.

impl From<RationalError> for UnitResolveError

fn from(err: RationalError) -> Self

Converts to this type from the input type.

impl PartialEq for UnitResolveError

fn eq(&self, other: &UnitResolveError) -> 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 UnitResolveError