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refactor: start cleaning up SiblingSubgraph convexity checking #2956

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Merged
acl-cqc merged 4 commits into from
Mar 17, 2026
Merged

refactor: start cleaning up SiblingSubgraph convexity checking #2956

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d457622
Drop unused From instance
acl-cqc Mar 17, 2026
eb88d6d
Derive Clone for ConvexChecker rather than manually implement
acl-cqc Mar 17, 2026
61f2e44
Clarify some types are actually fixed as TopoConvexChecker
acl-cqc Mar 17, 2026
bc6cf8c
Abandon OnceCell initialization
acl-cqc Mar 17, 2026
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25 changes: 4 additions & 21 deletions hugr-core/src/hugr/views/sibling_subgraph.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -228,7 +228,7 @@ impl<N: HugrNode> SiblingSubgraph<N> {

/// Create a new convex sibling subgraph from input and output boundaries.
///
/// Provide a [`ConvexChecker`] instance to avoid constructing one for
/// Provide a [`TopoConvexChecker`] instance to avoid constructing one for
/// faster convexity check. If you do not have one, use
/// [`SiblingSubgraph::try_new`].
///
Expand Down Expand Up @@ -296,7 +296,7 @@ impl<N: HugrNode> SiblingSubgraph<N> {

/// Create a subgraph from a set of nodes.
///
/// Provide a [`ConvexChecker`] instance to avoid constructing one for
/// Provide a [`TopoConvexChecker`] instance to avoid constructing one for
/// faster convexity check. If you do not have one, use
/// [`SiblingSubgraph::try_from_nodes`].
///
Expand Down Expand Up @@ -494,7 +494,7 @@ impl<N: HugrNode> SiblingSubgraph<N> {
let checker_ref = match mode {
ValidationMode::WithChecker(c) => Some(c),
ValidationMode::CheckConvexity => {
checker = ConvexChecker::new(hugr, self.get_parent(hugr));
checker = TopoConvexChecker::new(hugr, self.get_parent(hugr));
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@acl-cqc acl-cqc Mar 17, 2026

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ValidationMode::WithChecker specifically contains a TopoConvexChecker so this must match that

Some(&checker)
}
ValidationMode::SkipConvexity => None,
Expand Down Expand Up @@ -983,6 +983,7 @@ pub type LineConvexChecker<'g, Base> =
/// This type is generic over the convexity checker used. If checking convexity
/// for circuit-like graphs, use [`LineConvexChecker`], otherwise use
/// [`TopoConvexChecker`].
#[derive(Clone)]
pub struct ConvexChecker<'g, Base: HugrView, Checker> {
/// The base HUGR to check convexity on.
base: &'g Base,
Expand All @@ -993,16 +994,6 @@ pub struct ConvexChecker<'g, Base: HugrView, Checker> {
checker: OnceCell<(Checker, Base::RegionPortgraphNodes)>,
}

impl<'g, Base: HugrView, Checker: Clone> Clone for ConvexChecker<'g, Base, Checker> {
fn clone(&self) -> Self {
Self {
base: self.base,
region_parent: self.region_parent,
checker: self.checker.clone(),
}
}
}

impl<'g, Base: HugrView, Checker> ConvexChecker<'g, Base, Checker> {
/// Create a new convexity checker.
pub fn new(base: &'g Base, region_parent: Base::Node) -> Self {
Expand Down Expand Up @@ -1379,14 +1370,6 @@ fn is_non_value_edge<H: HugrView>(hugr: &H, node: H::Node, port: Port) -> bool {
is_other || is_static
}

impl<'a, 'c, G: HugrView, Checker: Clone> From<&'a ConvexChecker<'c, G, Checker>>
for std::borrow::Cow<'a, ConvexChecker<'c, G, Checker>>
{
fn from(value: &'a ConvexChecker<'c, G, Checker>) -> Self {
Self::Borrowed(value)
}
}

/// Errors that can occur while constructing a [`SimpleReplacement`].
#[derive(Debug, Clone, PartialEq, Error)]
#[non_exhaustive]
Expand Down
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