Struct NullOperation 

pub struct NullOperation<H: HostTypes> { /* private fields */ }

Phase 2 (orphan-closure) — resolver-absent default impl of Operation<H>. Every accessor returns H::EMPTY_* sentinels (for scalar / host-typed returns) or a 'static-lifetime reference to a sibling Null*’s ABSENT const (for trait-typed returns). Downstream provides concrete impls; this stub closes the ontology-derived trait orphan.

Implementations

impl<H: HostTypes> NullOperation<H>

pub const ABSENT: NullOperation<H>

Absent-value sentinel. &Self::ABSENT gives every trait-typed accessor a 'static-lifetime reference target.

Trait Implementations

impl<H: Clone + HostTypes> Clone for NullOperation<H>

fn clone(&self) -> NullOperation<H>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<H: Debug + HostTypes> Debug for NullOperation<H>

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

Formats the value using the given formatter.

impl<H: HostTypes> Default for NullOperation<H>

fn default() -> Self

Returns the “default value” for a type.

impl<H: Hash + HostTypes> Hash for NullOperation<H>

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<H: HostTypes> Operation<H> for NullOperation<H>

type OperationTarget = NullOperation<H>

Associated type for Operation.

fn arity(&self) -> u64

The number of arguments this operation takes. 1 for unary operations, 2 for binary operations.

fn has_geometric_character(&self) -> GeometricCharacter

The geometric role of this operation in the UOR ring and hypercube geometry. Functional: each operation has exactly one geometric character.

fn inverse(&self) -> &Self::OperationTarget

The inverse operation: the operation inv_op such that op(x, inv_op(x)) = e for all x, where e is the identity.

fn composed_of(&self) -> &H::HostString

Ordered list of operations this operation is composed from. Uses rdf:List to preserve application order (first element applied innermost). E.g., succ = neg ∘ bnot is encoded as [op:neg, op:bnot] meaning neg applied to the result of bnot.

fn is_ring_op(&self) -> bool

True iff this Operation participates in the Z/(2^n)Z ring-arithmetic vocabulary. Annotation drives the Lean RingOp class generation in UOR/Enforcement.lean.

impl<H: PartialEq + HostTypes> PartialEq for NullOperation<H>

fn eq(&self, other: &NullOperation<H>) -> 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<H: Copy + HostTypes> Copy for NullOperation<H>

impl<H: Eq + HostTypes> Eq for NullOperation<H>

impl<H: HostTypes> StructuralPartialEq for NullOperation<H>