pub struct Invariant {
pub name: Ident,
pub predicate: Expr,
pub documentation: Option<String>,
pub span: Span,
pub trivia: Trivia,
}Expand description
An agent invariant (v0.80 §14). A named predicate over the agent’s state
fields that must hold of every committed state; a commit that would violate
it faults (InvariantViolation) before the state is persisted. The
predicate references state fields by bare name, mirroring the design-notes
worked examples (status == Paid implies paymentRef.isSome()).
Fields§
§name: Ident§predicate: ExprThe predicate expression — an ordinary Bool-typed expression over the
state fields, plus implies and is. The parsed-predicate-on-a-
declaration shape mirrors ActorRefinement::predicate.
documentation: Option<String>§span: Span§trivia: TriviaTrait Implementations§
Auto Trait Implementations§
impl Freeze for Invariant
impl RefUnwindSafe for Invariant
impl Send for Invariant
impl Sync for Invariant
impl Unpin for Invariant
impl UnsafeUnpin for Invariant
impl UnwindSafe for Invariant
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