Struct chalk_engine::ExClause

pub struct ExClause<C: Context> {
    pub subst: C::Substitution,
    pub delayed_literals: Vec<DelayedLiteral<C>>,
    pub constraints: Vec<C::RegionConstraint>,
    pub subgoals: Vec<Literal<C>>,
}

The paper describes these as A :- D | G.

Fields

subst: C::Substitution

The substitution which, applied to the goal of our table, would yield A.

delayed_literals: Vec<DelayedLiteral<C>>

Delayed literals: things that we depend on negatively, but which have not yet been fully evaluated.

constraints: Vec<C::RegionConstraint>

Region constraints we have accumulated.

subgoals: Vec<Literal<C>>

Subgoals: literals that must be proven

Trait Implementations

impl<C: Clone + Context> Clone for ExClause<C> where     C::Substitution: Clone,     C::RegionConstraint: Clone,

fn clone(&self) -> ExClause<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 ExClause<C> where     C::Substitution: Debug,     C::RegionConstraint: Debug,

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

Formats the value using the given formatter.

impl<C: PartialEq + Context> PartialEq for ExClause<C> where     C::Substitution: PartialEq,     C::RegionConstraint: PartialEq,

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

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

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

This method tests for !=.

impl<C: Eq + Context> Eq for ExClause<C> where     C::Substitution: Eq,     C::RegionConstraint: Eq,

impl<C: Hash + Context> Hash for ExClause<C> where     C::Substitution: Hash,     C::RegionConstraint: 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].