Struct GuardDnf 

pub struct GuardDnf(/* private fields */);

Disjunction of conjunctions of typed predicates.

Construction removes impossible conjunctions and normalizes exact complementary resolution, absorption, and deduplication.

Implementations

impl GuardDnf

pub fn unconditional() -> Self

Returns the formula that accepts every input.

pub fn never() -> Self

Returns the formula that accepts no input.

pub fn from_conjunction(predicates: impl IntoIterator<Item = Predicate>) -> Self

Builds a normalized DNF from one predicate conjunction.

pub fn from_guards(guards: impl IntoIterator<Item = Guard>) -> Self

Builds a normalized DNF from one guard conjunction.

pub fn from_guard_disjunction( conjunctions: impl IntoIterator<Item = impl IntoIterator<Item = Guard>>, ) -> Self

Builds a normalized DNF from guard conjunction alternatives.

pub fn from_contract_predicate_disjunction( conjunctions: impl IntoIterator<Item = impl IntoIterator<Item = Predicate>>, ) -> Self

Project typed predicate branches to the contract-expressible guard vocabulary while retaining their disjunction as one row condition.

pub fn from_contract_predicate_disjunction_preserving_evidence( conjunctions: impl IntoIterator<Item = impl IntoIterator<Item = Predicate>>, ) -> Self

Retain projected alternatives until their downstream evidence payloads can be compared; early resolution can erase a nullable or strict arm.

pub fn from_contract_predicate_conjunction( predicates: impl IntoIterator<Item = Predicate>, ) -> Self

Projects one predicate conjunction into contract guards.

pub fn normalize_conditional_guard_disjunction( conjunctions: impl IntoIterator<Item = impl IntoIterator<Item = ConditionalGuard>>, ) -> Vec<Vec<ConditionalGuard>>

Canonicalizes a disjunction of conditional-guard conjunctions.

pub fn from_disjunction( conjunctions: impl IntoIterator<Item = impl IntoIterator<Item = Predicate>>, ) -> Self

Builds and minimizes a DNF from predicate conjunction alternatives.

pub fn is_unconditional(&self) -> bool

Reports whether the formula accepts every input.

pub fn is_never(&self) -> bool

Reports whether the formula accepts no input.

pub fn disjuncts(&self) -> &BTreeSet<BTreeSet<Predicate>>

Returns normalized predicate conjunctions in stable order.

pub fn guard_conjunctions(&self) -> Vec<Vec<Guard>>

Projects each predicate conjunction into serializable contract guards.

pub fn single_guard_conjunction(&self) -> Option<Vec<Guard>>

Returns the sole projected guard conjunction, if exactly one exists.

pub fn conjoined(&self, other: &Self) -> Self

Returns the conjunction of this formula and other.

pub fn conjoined_with_guards( &self, guards: impl IntoIterator<Item = Guard>, ) -> Self

Conjoins this formula with one guard conjunction.

pub fn union_preserving_disjuncts(&mut self, other: Self)

Adds alternatives without absorbing subsets that may carry distinct evidence.

pub fn union_absorbing(&mut self, other: Self)

Union conditions after their evidence payloads are known to be equal, re-normalizing so duplicate and subsumed disjuncts are absorbed (unlike Self::union_preserving_disjuncts).

pub fn map_value_paths<F>(&mut self, map: &mut F)

where F: FnMut(&str) -> String,

Rewrites every values path and re-normalizes the formula.

Trait Implementations

impl Clone for GuardDnf

fn clone(&self) -> GuardDnf

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GuardDnf

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

Formats the value using the given formatter.

impl Default for GuardDnf

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for GuardDnf

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for GuardDnf

impl Hash for GuardDnf

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 Ord for GuardDnf

fn cmp(&self, other: &GuardDnf) -> 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 PartialEq for GuardDnf

fn eq(&self, other: &GuardDnf) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for GuardDnf

fn partial_cmp(&self, other: &GuardDnf) -> 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 Serialize for GuardDnf

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for GuardDnf