Detect $dynamicAnchor in OpenAPI 3.0 documents (DynamicAnchorIn30 rule) - #205
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Closes the 3.1 divergence enumeration. Matching pattern to $dynamicRef: raw_schema key detection, 3.0 only emits, parse stays permissive.
$dynamicAnchor on a 3.0 document warns and raises (JSON Schema 2020-12 dynamic resolution point with no 3.0 equivalent); the same keyword on a 3.1 document stays clean.
takayamaki
marked this pull request as ready for review
August 27, 2026 23:57
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Continuing the OpenAPI 3.1 work from #152.
$dynamicAnchoris the companion of$dynamicReffrom #203.$dynamicRefnames an anchor to resolve against the dynamic scope,and
$dynamicAnchoris what declares such an anchor on a schema.3.0 knows neither: its only referencing keyword is
$ref, resolved statically.This PR adds detection of that version mismatch.
A 3.0 document using
$dynamicAnchoris relying on a keyword its declared version does not define,and
SpecValidatorshould be able to say so.SpecValidator rule
DynamicAnchorIn30reports a violation for each schema in a 3.0 document that uses$dynamicAnchor:Detection inspects
raw_schemakey presence,so it fires whether or not anything references the anchor.
As with #203, this PR does not make
$dynamicAnchortake part in reference resolution.Dynamic resolution has to pick its target while the schema is being evaluated,
which likely means redesigning
SchemaValidatorin this gem.Resolving it is a TODO beyond this series of PRs.