Enum DerivedShapeProblem 

pub enum DerivedShapeProblem {
    Scalar(Name),
    NoConstructors(Name),
    UnitHasNoElement(Name),
}

What is wrong with the type a derived instance is for, that it has no shape to walk — see Error::DerivedInstanceNoShape.

Variants

Scalar(Name)

A scalar type has no shape for a walk to read, so its instances are written: the type.

NoConstructors(Name)

A type whose constructors are not in scope — one imported without them: the type.

UnitHasNoElement(Name)

() for a class with a member whose derivation walks one value, which has no element to begin at: the class.

Trait Implementations

impl Clone for DerivedShapeProblem

fn clone(&self) -> DerivedShapeProblem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DerivedShapeProblem

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

Formats the value using the given formatter.

impl PartialEq for DerivedShapeProblem

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DerivedShapeProblem