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Implement HashOf statement and op (#217)

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Ahmad Afuni 2025-05-06 19:14:53 +10:00 • committed by GitHub
parent 53ade6ea26
commit 8cc090c5e0
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6 changed files with 139 additions and 6 deletions
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4
src/middleware/statement.rs
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@ -32,6 +32,7 @@ pub enum NativePredicate {
SumOf = 8,
ProductOf = 9,
MaxOf = 10,
HashOf = 11,
// Syntactic sugar predicates. These predicates are not supported by the backend. The
// frontend compiler is responsible of translating these predicates into the predicates above.
@ -102,6 +103,7 @@ pub enum Statement {
SumOf(AnchoredKey, AnchoredKey, AnchoredKey),
ProductOf(AnchoredKey, AnchoredKey, AnchoredKey),
MaxOf(AnchoredKey, AnchoredKey, AnchoredKey),
HashOf(AnchoredKey, AnchoredKey, AnchoredKey),
Custom(CustomPredicateRef, Vec<WildcardValue>),
}
@ -123,6 +125,7 @@ impl Statement {
Self::SumOf(_, _, _) => Native(NativePredicate::SumOf),
Self::ProductOf(_, _, _) => Native(NativePredicate::ProductOf),
Self::MaxOf(_, _, _) => Native(NativePredicate::MaxOf),
Self::HashOf(_, _, _) => Native(NativePredicate::HashOf),
Self::Custom(cpr, _) => Custom(cpr.clone()),
}
}
@ -140,6 +143,7 @@ impl Statement {
Self::SumOf(ak1, ak2, ak3) => vec![Key(ak1), Key(ak2), Key(ak3)],
Self::ProductOf(ak1, ak2, ak3) => vec![Key(ak1), Key(ak2), Key(ak3)],
Self::MaxOf(ak1, ak2, ak3) => vec![Key(ak1), Key(ak2), Key(ak3)],
Self::HashOf(ak1, ak2, ak3) => vec![Key(ak1), Key(ak2), Key(ak3)],
Self::Custom(_, args) => Vec::from_iter(args.into_iter().map(WildcardLiteral)),
}
}