Struct Warning 

pub struct Warning {
    pub origin: Origin,
    pub blocked_by: Vec<String>,
    pub hint: Option<String>,
}

A constraint that could not be checked because a needed atom is UNKNOWN.

Fields

origin: Origin

Provenance of the constraint that could not be checked.

blocked_by: Vec<String>

Human labels of the UNKNOWN atoms blocking the check.

hint: Option<String>

A directed fix for the most informative blocking atom, distinguishing the two reasons a check stays blocked: the atom is a free input nothing can determine (→ add a FACT/NOT, or make a PREMISE a RULE so it derives the value), versus the atom is derivable by a RULE that has not fired (→ assert that rule’s antecedent). Advisory text; never changes the verdict.

Trait Implementations

impl Clone for Warning

fn clone(&self) -> Warning

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Warning

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

Formats the value using the given formatter.

impl Eq for Warning

impl PartialEq for Warning

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