Struct chalk_engine::ExClause

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

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

Fields

subst: I::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<I::RegionConstraint>

Region constraints we have accumulated.

subgoals: Vec<Literal<C, I>>

Subgoals: literals that must be proven

Trait Implementations

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

fn clone(&self) -> ExClause<C, I>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<C: Debug + Context, I: Debug + InferenceContext<C>> Debug for ExClause<C, I> where
    I::Substitution: Debug,
    I::RegionConstraint: Debug, 

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

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

fn eq(&self, __arg_0: &ExClause<C, I>) -> bool

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

fn ne(&self, __arg_0: &ExClause<C, I>) -> bool

This method tests for !=.

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

impl<C: Hash + Context, I: Hash + InferenceContext<C>> Hash for ExClause<C, I> where
    I::Substitution: Hash,
    I::RegionConstraint: Hash, 

fn hash<__HCI: Hasher>(&self, __arg_0: &mut __HCI)

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].