Ensure shared flow nodes are cached #41408
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Flow nodes that optionally provide a flow type will delegate to their antecedent to determine a flow type using a loop in `getFlowTypeOfReference`. If these nodes are marked as shared then their result should be cached for future lookups, but the registration inside `getFlowTypeOfReference` did only consider the most-recently processed flow node. Any flow nodes up to that point that did not provide a type but were marked as shared would therefore not be cached at all. This commit keeps track of the first seen shared flow node and ensures that the result type is cached for that node.
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@JoostK First, thanks for diagnosing this issue. You are indeed right, we end up not caching in cases where flow nodes are skipped and that's not a good thing. In terms of a fix, I think it can be even simpler than this PR. I will put up an alternative PR and run the full suite of tests on it. |
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Closing as resolved in #41665. |
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Fixes #41124
Alternative to #41387.
Flow nodes that optionally provide a flow type will delegate to their antecedent
to determine a flow type using a loop in
getFlowTypeOfReference. If these nodesare marked as shared then their result should be cached for future lookups, but
the registration inside
getFlowTypeOfReferencedid only consider the most-recentlyprocessed flow node. Any flow nodes up to that point that did not provide a type
but were marked as shared would therefore not be cached at all.
This commit keeps track of the first seen shared flow node and ensures that the
result type is cached for that node.