fix: Panic on SimpleReplace with multiports
#1324
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #1324 +/- ##
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+ Coverage 87.31% 87.45% +0.13%
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Files 108 108
Lines 19784 19791 +7
Branches 17520 17527 +7
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+ Hits 17275 17308 +33
+ Misses 1724 1717 -7
+ Partials 785 766 -19
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doug-q
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Jul 19, 2024
| /// Returns the hugr and the nodes of the NOT gates, in order. | ||
| #[fixture] | ||
| pub(in crate::hugr::rewrite) fn dfg_hugr_half_not_bools() -> (Hugr, Vec<Node>) { | ||
| fn build() -> Result<(Hugr, Vec<Node>), BuildError> { |
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I would prefer to not return a result, instead unwrap everywhere. This makes failures much easier to debug.
| #[rstest] | ||
| fn test_half_nots( | ||
| dfg_hugr_half_not_bools: (Hugr, Vec<Node>), | ||
| ) -> Result<(), Box<dyn std::error::Error>> { |
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| let subgraph = SiblingSubgraph::try_from_nodes(vec![input_not, output_not_0], &hugr)?; | ||
| // A map from (target ports of edges from the Input node of `replacement`) to (target ports of | ||
| // edges from nodes not in `removal` to nodes in `removal`). |
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I'm glad I'm not the only one who finds this v confusing
Co-authored-by: Douglas Wilson <141026920+doug-q@users.noreply.github.com>
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## 🤖 New release * `hugr`: 0.8.0 -> 0.9.0 * `hugr-core`: 0.5.0 -> 0.6.0 * `hugr-passes`: 0.5.0 -> 0.6.0 * `hugr-cli`: 0.1.4 -> 0.2.0 <details><summary><i><b>Changelog</b></i></summary><p> ## `hugr` <blockquote> ## 0.9.0 (2024-07-19) ### Bug Fixes - Add op's extension to signature check in `resolve_opaque_op` ([#1317](#1317)) - Panic on `SimpleReplace` with multiports ([#1324](#1324)) ### Refactor - [**breaking**] Separate Signature from FuncValueType by parametrizing Type(/Row)/etc. ([#1138](#1138)) ### Testing - Verify order edges ([#1293](#1293)) - Add failing test case for [#1315](#1315) ([#1316](#1316)) </blockquote> ## `hugr-core` <blockquote> ## 0.6.0 (2024-07-19) ### Bug Fixes - Add op's extension to signature check in `resolve_opaque_op` ([#1317](#1317)) - Panic on `SimpleReplace` with multiports ([#1324](#1324)) ### Refactor - [**breaking**] Separate Signature from FuncValueType by parametrizing Type(/Row)/etc. ([#1138](#1138)) ### Testing - Verify order edges ([#1293](#1293)) - Add failing test case for [#1315](#1315) ([#1316](#1316)) </blockquote> ## `hugr-passes` <blockquote> ## 0.6.0 (2024-07-19) ### Refactor - [**breaking**] Separate Signature from FuncValueType by parametrizing Type(/Row)/etc. ([#1138](#1138)) </blockquote> ## `hugr-cli` <blockquote> ## 0.2.0 (2024-07-19) ### Refactor - [**breaking**] Separate Signature from FuncValueType by parametrizing Type(/Row)/etc. ([#1138](#1138)) </blockquote> </p></details> --- This PR was generated with [release-plz](https://github.com/MarcoIeni/release-plz/). --------- Co-authored-by: Douglas Wilson <douglas.wilson@quantinuum.com>
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Closes #416. Requires ~CQCL/hugr#1295 CQCL/hugr#1324 to be released.
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Fixes #1323
This fix generalises the one from #1191.
SimpleReplace was too eager in disconnecting/connecting edges to the replacement graph, and that caused issues when querying the neighbours of multiports.
This gets resolved by delaying all new connections to the replacement until after we have computed all of them.
We don't need to do explicit disconnections to the replaced subgraph, since the nodes get removed anyway.