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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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8
src/middleware/operation.rs
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@ -69,6 +69,7 @@ pub enum NativeOperation {
SumOf = 11,
ProductOf = 12,
MaxOf = 13,
HashOf = 14,
// Syntactic sugar operations. These operations are not supported by the backend. The
// frontend compiler is responsible of translating these operations into the operations above.
@ -119,6 +120,7 @@ impl OperationType {
NativeOperation::SumOf => Some(Predicate::Native(NativePredicate::SumOf)),
NativeOperation::ProductOf => Some(Predicate::Native(NativePredicate::ProductOf)),
NativeOperation::MaxOf => Some(Predicate::Native(NativePredicate::MaxOf)),
NativeOperation::HashOf => Some(Predicate::Native(NativePredicate::HashOf)),
no => unreachable!("Unexpected syntactic sugar op {:?}", no),
},
OperationType::Custom(cpr) => Some(Predicate::Custom(cpr.clone())),
@ -152,6 +154,7 @@ pub enum Operation {
SumOf(Statement, Statement, Statement),
ProductOf(Statement, Statement, Statement),
MaxOf(Statement, Statement, Statement),
HashOf(Statement, Statement, Statement),
Custom(CustomPredicateRef, Vec<Statement>),
}
@ -174,6 +177,7 @@ impl Operation {
Self::SumOf(_, _, _) => OT::Native(SumOf),
Self::ProductOf(_, _, _) => OT::Native(ProductOf),
Self::MaxOf(_, _, _) => OT::Native(MaxOf),
Self::HashOf(_, _, _) => OT::Native(HashOf),
Self::Custom(cpr, _) => OT::Custom(cpr.clone()),
}
}
@ -194,6 +198,7 @@ impl Operation {
Self::SumOf(s1, s2, s3) => vec![s1, s2, s3],
Self::ProductOf(s1, s2, s3) => vec![s1, s2, s3],
Self::MaxOf(s1, s2, s3) => vec![s1, s2, s3],
Self::HashOf(s1, s2, s3) => vec![s1, s2, s3],
Self::Custom(_, args) => args,
}
}
@ -250,6 +255,9 @@ impl Operation {
Self::ProductOf(s1, s2, s3)
}
(NO::MaxOf, (Some(s1), Some(s2), Some(s3)), OA::None, 3) => Self::MaxOf(s1, s2, s3),
(NO::HashOf, (Some(s1), Some(s2), Some(s3)), OA::None, 3) => {
Self::HashOf(s1, s2, s3)
}
_ => Err(Error::custom(format!(
"Ill-formed operation {:?} with arguments {:?}.",
op_code, args