Enum Conflict 

pub enum Conflict<T: Literal, S: LiteralStorage<T>> {
    Ground,
    Unit(Clause<T, S>),
    Learned(usize, Clause<T, S>),
    Restart(Clause<T, S>),
}

Represents the outcome of a conflict analysis.

This enum categorises the result of analysing a conflict, which guides the solver’s next actions (e.g. learning a clause, backtracking, restarting).

Type Parameters

• T: The type of Literal used in clauses.
• S: The LiteralStorage type used within clauses.

Variants

Ground

A conflict at decision level 0 (ground level) was found. This means the original formula is unsatisfiable. No clause is learnt.

Unit(Clause<T, S>)

A unit clause was learnt from the conflict. This clause will propagate a literal immediately after backtracking.

Learned(usize, Clause<T, S>)

A non-unit clause was learnt. The usize is the index of the asserting literal within the learnt clause. The Learned variant indicates the clause is asserting at some backtrack level.

Restart(Clause<T, S>)

The conflict analysis suggests a restart is beneficial.

Trait Implementations

impl<T: Clone + Literal, S: Clone + LiteralStorage<T>> Clone for Conflict<T, S>

fn clone(&self) -> Conflict<T, S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Literal, S: Debug + LiteralStorage<T>> Debug for Conflict<T, S>

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

Formats the value using the given formatter.

impl<T: Literal, S: LiteralStorage<T>> Default for Conflict<T, S>

fn default() -> Conflict<T, S>

Returns the “default value” for a type.

impl<T: Hash + Literal, S: Hash + LiteralStorage<T>> Hash for Conflict<T, S>

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Ord + Literal, S: Ord + LiteralStorage<T>> Ord for Conflict<T, S>

fn cmp(&self, other: &Conflict<T, S>) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: PartialEq + Literal, S: PartialEq + LiteralStorage<T>> PartialEq for Conflict<T, S>

fn eq(&self, other: &Conflict<T, S>) -> 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<T: PartialOrd + Literal, S: PartialOrd + LiteralStorage<T>> PartialOrd for Conflict<T, S>

fn partial_cmp(&self, other: &Conflict<T, S>) -> Option<Ordering>

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

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

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

impl<T: Eq + Literal, S: Eq + LiteralStorage<T>> Eq for Conflict<T, S>

impl<T: Literal, S: LiteralStorage<T>> StructuralPartialEq for Conflict<T, S>