Struct VisitOutcome 

pub struct VisitOutcome<T> {
    pub value: Option<T>,
    pub residual: Option<Predicate>,
}

Result produced while evaluating parts of a predicate tree.

Fields

value: Option<T>

Computed value for the evaluated portion, when available.

residual: Option<Predicate>

Residual predicate that still needs evaluation elsewhere.

Implementations

impl<T> VisitOutcome<T>

pub fn value(value: T) -> Self

Outcome containing only a computed value.

pub fn residual(residual: Predicate) -> Self

Outcome containing only a residual predicate.

pub fn empty() -> Self

Outcome without value or residual.

Trait Implementations

impl<T: Clone> Clone for VisitOutcome<T>

fn clone(&self) -> VisitOutcome<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for VisitOutcome<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for VisitOutcome<T>

fn default() -> VisitOutcome<T>

Returns the “default value” for a type.