Struct chalk_engine::SimplifiedAnswer

pub struct SimplifiedAnswer<C: Context> {
    pub subst: C::CanonicalConstrainedSubst,
    pub ambiguous: bool,
}

Fields

subst: C::CanonicalConstrainedSubst

A fully instantiated version of the goal for which the query is true (including region constraints).

ambiguous: bool

If this flag is set, then the answer could be neither proven nor disproven. In general, the existence of a non-empty set of delayed literals simply means the answer's status is UNKNOWN, either because the size of the answer exceeded max_size or because of a negative loop (e.g., P :- not { P }).

Trait Implementations

impl<C: Clone + Context> Clone for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: Clone,

fn clone(&self) -> SimplifiedAnswer<C>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<C: Debug + Context> Debug for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: Debug,

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

Formats the value using the given formatter.

impl<C: PartialEq + Context> PartialEq for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: PartialEq,

fn eq(&self, other: &SimplifiedAnswer<C>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &SimplifiedAnswer<C>) -> bool

This method tests for !=.

impl<C: Eq + Context> Eq for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: Eq,

impl<C: PartialOrd + Context> PartialOrd for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: PartialOrd,

fn partial_cmp(&self, other: &SimplifiedAnswer<C>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &SimplifiedAnswer<C>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &SimplifiedAnswer<C>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &SimplifiedAnswer<C>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &SimplifiedAnswer<C>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<C: Ord + Context> Ord for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: Ord,

fn cmp(&self, other: &SimplifiedAnswer<C>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

impl<C: Hash + Context> Hash for SimplifiedAnswer<C> where     C::CanonicalConstrainedSubst: Hash,

fn hash<__HC: Hasher>(&self, state: &mut __HC)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].