fix(generator): normalize parenthesized enum hints - #5330
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Included review availability: Your plan provides up to 4 included reviews per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe option generator now supports parenthesized choice hints and improved Snyk handling for optional wrappers, empty hints, malformed choices, and shared enum parsing. Tests cover these cases and empty-list defaults. ChangesHint parsing
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant SnykCliScraper
participant OptionEnumFactory
participant GeneratedOption
SnykCliScraper->>SnykCliScraper: Capture optional wrapper and raw hint
SnykCliScraper->>OptionEnumFactory: Normalize and parse hint
OptionEnumFactory-->>SnykCliScraper: Enum definition or fallback
SnykCliScraper->>GeneratedOption: Set option type and description
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation The diff implements the parenthesized wrapper in
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Claude Review
The PR fixes the shared CLI hint parser (OptionEnumFactory.UnwrapChoiceHint and its delimiter guard) so parenthesized choice hints like "(json|yaml)" unwrap correctly instead of producing literal "(json"/"yaml)" enum values, and unmatched parens are now rejected as leftover syntax. The change is small, well-targeted, and covered by new regression tests in the factory, base-scraper, and Cobra-scraper test suites. However, the fix is not applied everywhere hint text is pipe-split into enum values: SnykCliScraper.CreateEnumDefinition implements its own independent parsing path that bypasses the shared factory and remains exposed to the same class of bug.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Verified HintSyntaxDelimiters now includes '()' so inferred hints containing stray parens are rejected, and UnwrapChoiceHint strips a fully matched '(' ... ')' wrapper before pipe-splitting, correctly turning '(json|yaml)' into 'json|yaml' instead of leaving literal '(json'/'yaml)' values.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Confirmed new cases cover both the wrapped success case '(json|yaml)' (and a spaced variant) unwrapping to ['json','yaml'], and unmatched/mismatched paren cases '(json|yaml', 'json|yaml)', '(json|yaml]' being rejected via DetectEnumValues returning null.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/CobraCliScraperTests.cs: Verified the added '(json|yaml)' argument exercises the real Cobra option-parsing pipeline end-to-end and asserts the resulting EnumDefinition values are exactly ['json','yaml'], not the literal paren-prefixed strings.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs: Checked that TryCreateFromHint rejects '(json'/'yaml)' as leftover syntax while TryCreate (authoritative/structured path) still preserves those exact literal values, matching the PR's stated invariant that structured enum sources keep their original punctuation.
SnykCliScraper.CreateEnumDefinition (tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs:403,473-497) reimplements pipe-delimited enum-value parsing independently of the shared OptionEnumFactory that this PR just fixed. Line 403 trims only '<','>','[',']' from the captured value hint (parens and braces are left untouched), and CreateEnumDefinition then does a raw valueHint.Split('|', ...) with no delimiter guard at all. A Snyk help hint written as (json|yaml) would still be parsed into literal enum values (json and yaml), exactly the bug this PR sets out to fix, because this code path never calls OptionEnumFactory.UnwrapChoiceHint or TryCreateFromHint. Since the PR's description explicitly frames the fix as normalizing parens 'in the shared hint parser', this remaining path should either be migrated to call OptionEnumFactory.UnwrapChoiceHint/TryCreateFromHint (as CobraCliScraper and CliDocumentationScraperBase already do), or the PR description/issue should be updated to scope the fix to only the Cobra/documentation-adapter paths and file a follow-up for Snyk. Routing Snyk through the shared factory is the better long-term architecture: it collapses three slightly different ad hoc hint-stripping/guard implementations (base scraper, Cobra scraper, Snyk scraper) into one tested code path, so future syntax fixes like this one only need to land in a single place instead of being rediscovered per-scraper.
Optional follow-up notes
IsBooleanValueHint in SnykCliScraper.cs:583 also does its own valueHint.Split('|', ...) without going through the shared hint utilities; if the enum-parsing path above is consolidated onto OptionEnumFactory, consider whether boolean-hint detection should share the same unwrap step for consistency (lower priority than the enum-value finding since a mis-detected boolean is a narrower correctness gap).
The PR description says checked-in generated enums contain no parenthesized values and regeneration is still being audited; since Snyk's independent parser is the one remaining path with this bug, it would be worth specifically auditing Snyk's checked-in package for any enum members that look like stray '(' / ')' prefixes/suffixes before closing out the broader audit mentioned in the description.
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Addressed the Claude review-body finding in 8536891, confirmed on the remote PR head. Snyk now uses shared wrapper parsing and OptionEnumFactory, including wrapped true/false value options. Eight Snyk regressions failed before the fix; all 138 focused factory/Cobra/documentation/Snyk tests now pass. Malformed hints retain their text in string-option descriptions. Scoped formatting passes. Fresh Snyk output will follow source merge, after the active Google snapshot has been accepted. |
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The Claude rerun found no source defects and accepted separate Snyk regeneration, but publication failed because its evidence included src/ModularPipelines.Snyk/Enums/SnykFailOn.Generated.cs, which is outside this source-only diff. This is a review-publication failure, not a code/test failure. Please keep review evidence limited to changed source/test files; the generated-output follow-up remains explicitly tracked in #5009. |
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Inline comments:
In
`@tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs`:
- Line 403: Update the Snyk CLI option parsing around SnykOptionPattern,
OptionEnumFactory.UnwrapChoiceHint, and CreateOption so a captured empty () hint
is treated as a malformed value hint rather than a flag. Preserve the raw () in
PreserveValueHint, classify the option as a string? value option, and retain =
as its separator; add a regression test covering --mode=().
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Claude Review
PR routes SnykCliScraper's choice-hint parsing through the shared OptionEnumFactory (UnwrapChoiceHint/TryCreateFromHint/PreserveValueHint), replacing Snyk's independent '<>[]' trim-and-split logic. This closes the parenthesized-hint bug for Snyk that the prior Claude review flagged as blocking, adds regression coverage for wrapped choices, wrapped boolean value-options, and malformed/unmatched delimiter hints, and removes RemoveEmptyEntries so double-pipe/empty-segment hints are now rejected as enums instead of silently dropping a value.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Unchanged in this diff from the already-merged parenthesis fix; re-verified HintSyntaxDelimiters includes '()' and UnwrapChoiceHint/TryCreateFromHint/PreserveValueHint behave as the new Snyk call sites expect (single-pass matched-pair unwrap, letter+delimiter guard, metadata-append helper).
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Confirmed CreateOption/CreateEnumDefinition now call OptionEnumFactory.UnwrapChoiceHint and TryCreateFromHint instead of a bespoke '<>[]' Trim+Split, so '(json|yaml)' hints now unwrap and enumerate correctly; verified isBoolean short-circuits the enum path and PreserveValueHint only appends metadata when no enum was created, matching the new tests.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Traced each new test case (wrapped choices, wrapped true/false, and four malformed hints) against the current SnykCliScraper implementation and confirmed the resulting CSharpType/IsFlag/EnumDefinition/Description assertions align with the actual control flow, including the empty-entry rejection after removing RemoveEmptyEntries from the '|' splits.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs: Parameterized test now also covers the '(json'/'yaml)' unmatched-parenthesis case alongside the existing bracket case, consistent with TryCreateFromHint rejecting it while TryCreate (authoritative path) preserves the literal values.
No actionable findings.
Optional follow-up notes
SnykCliScraper.CreateEnumDefinition and IsBooleanValueHint both still call valueHint.Split('|', StringSplitOptions.TrimEntries) independently rather than sharing one split helper from OptionEnumFactory; a follow-up could add a small OptionEnumFactory.SplitChoiceValues(hint) used by both call sites (and by CliDocumentationScraperBase) to fully consolidate the pipe-splitting policy, not just the wrap/creation logic, so future split-option changes (e.g. handling ||) only need to land once.
The P1 finding about the checked-in Snyk generated package (e.g. SnykFailOn.Generated.cs) now being stale relative to the new 'Allowed values for --x.' description format and the new single-pass unwrap semantics is already tracked via #5009 and acknowledged in the PR thread; per AGENTS.md this source-only fix should merge first and Snyk should be regenerated afterward, so it's not an action item for this diff, just a reminder that the regeneration follow-up is still open.
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Late CodeRabbit empty-wrapper finding is fixed in 2cb1782 and its thread resolved after remote-head confirmation. Explicit empty wrappers remain string value options with equals separators and lossless descriptions. Five new regression cases reproduced; all 143 focused cases pass. The separate generated-output thread remains open pending the source-merge dependency and fresh Snyk acceptance. |
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Claude Review
PR fixes parenthesized CLI choice-hint parsing across OptionEnumFactory (shared delimiter guard/unwrap) and migrates SnykCliScraper off its independent bracket-trim/split logic onto that shared factory. The latest commit (2cb1782) additionally fixes a CodeRabbit-flagged regression where an explicit empty () hint was unwrapped before flag classification, causing --mode=() to be misclassified as a bool? flag instead of a string? value option. I traced the full CreateOption control flow for every new/updated test case (wrapped enums, wrapped booleans, and nine malformed-hint variants including (), [], {}, <>, unmatched parens, and double pipes) against the current source and confirmed each assertion (CSharpType, IsFlag, ValueSeparator, EnumDefinition, Description) is produced correctly by the implemented logic.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Confirmed HintSyntaxDelimiters includes '()', UnwrapChoiceHint strips a matched paren pair before pipe-splitting, and the new PreserveValueHint condition (adding UnwrapChoiceHint(valueHint).Length != 0) correctly causes empty wrappers like '()'/'[]'/'{}'/'<>' to fall through to metadata-appending instead of being silently dropped, without affecting normal non-wrapped, non-pipe type hints used by other scrapers.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end: rawValueHint (unmodified capture) now drives IsFlagOption so '()' is no longer treated as empty/flag, while the unwrapped valueHint drives enum/boolean inference and CreateEnumDefinition delegates to the shared OptionEnumFactory.TryCreateFromHint, closing the parenthesized-hint bug previously unique to Snyk's independent parser.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Manually replayed all nine Malformed_Choice_Hints_Remain_In_String_Descriptions cases and both Choice_Hints_Use_Shared_Wrapper_Parsing/Wrapped_Boolean_Choices_Remain_Value_Options cases against current SnykCliScraper/OptionEnumFactory logic; every assertion (CSharpType, IsFlag, ValueSeparator, EnumDefinition nullness, Description containment) matches the implemented control flow, including the new '()' empty-wrapper regression case.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Verified new parenthesis test cases (matched, spaced, and mismatched/unmatched) resolve correctly through the already-shared DetectEnumValues -> OptionEnumFactory.UnwrapChoiceHint/TryCreateFromHint path, confirming the base scraper (and by extension Docker/DotNet/Helm/Kubectl/Azure scrapers that reuse it) benefits from the delimiter fix without needing separate production changes.
No actionable findings.
Optional follow-up notes
SnykCliScraper.CreateEnumDefinition and IsBooleanValueHint still call valueHint.Split('|', StringSplitOptions.TrimEntries) independently rather than through a shared OptionEnumFactory split helper. This was already flagged by a prior reviewer as low-priority follow-up; consolidating pipe-splitting into OptionEnumFactory (e.g. a SplitChoiceValues helper reused by the base scraper, Cobra, and Snyk) would ensure future split-policy changes (like handling ||) land once instead of being re-implemented per scraper. Not blocking since behavior is currently correct and covered by tests.
The private IsFlagOption(string longForm, string valueHint, bool isNumeric) parameter is still named valueHint even though the call site now passes rawValueHint (the un-unwrapped capture). Renaming the parameter to rawValueHint would make the raw-vs-unwrapped distinction self-documenting at the call site and prevent a future contributor from accidentally passing the unwrapped valueHint variable instead.
The generated Snyk package regeneration (tracked in #5009, flagged by Codex as P1 and explicitly deferred per AGENTS.md's 'fix source, then regenerate separately' policy) remains outstanding after this merges. This is consistent with repo policy for this source-only PR, but the regeneration PR should be produced and reviewed promptly once merged, since checked-in Snyk enum descriptions are now stale relative to the new shared-factory description format.
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Claude Review
This PR fixes parenthesized/angle-bracket CLI choice-hint parsing in OptionEnumFactory (shared delimiter guard and unwrap logic) and migrates SnykCliScraper off its own bespoke bracket-trim/split logic onto that shared factory, closing a bug where hints like "(json|yaml)" produced literal "(json"/"yaml)" enum members. The latest commit additionally widens the Snyk regex capture group so incomplete/mismatched angle-bracket hints (e.g. "<json|yaml" with no closing ">") are captured with their leading delimiter intact, letting the shared validation reject them consistently instead of silently treating them as valid two-value enums.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Verified HintSyntaxDelimiters now includes '()' and UnwrapChoiceHint strips a matched '(' ... ')' wrapper before pipe-splitting; PreserveValueHint's added UnwrapChoiceHint(valueHint).Length != 0 check correctly routes explicitly-empty wrappers like '()'/'[]'/'{}'/'<>' into the metadata-append path instead of dropping them.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end: IsFlagOption now uses rawValueHint (fixing the '()' flag-misclassification regression), CreateEnumDefinition/CreateOption delegate to OptionEnumFactory.UnwrapChoiceHint/TryCreateFromHint, and the widened SnykOptionPattern regex captures the leading '<' for incomplete angle-bracket hints so malformed cases are rejected by the shared delimiter guard rather than misparsed as valid enums.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Manually replayed all wrapped-choice, wrapped-boolean, and twelve malformed-hint cases (including '()','[]','{}','<>', unmatched/mismatched delimiters, and double-pipe hints) against current SnykCliScraper/OptionEnumFactory logic; every CSharpType/IsFlag/ValueSeparator/EnumDefinition/Description assertion matches the traced control flow.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Confirmed new parenthesis-wrapped and unmatched-paren cases exercise the shared DetectEnumValues -> OptionEnumFactory path, verifying the base scraper (and Docker/DotNet/Helm/Kubectl/Azure scrapers reusing it) is covered by the delimiter fix without needing separate production changes.
No actionable findings.
Optional follow-up notes
Two prior review threads (CodeRabbit's SnykCliScraper.CreateEnumDefinition/IsBooleanValueHint duplicate pipe-splitting, and the IsFlagOption parameter still named valueHint despite receiving rawValueHint) remain open as low-priority follow-ups; neither is a correctness issue in the current diff and both were already explicitly deferred by prior reviewers as non-blocking.
The generated Snyk package (e.g. SnykFailOn.Generated.cs) is now stale relative to the new shared-factory 'Allowed values for --x.' description format; this is a known, intentionally deferred follow-up tracked in #5009 per AGENTS.md's source-first/regenerate-separately policy, not an action item for this source-only PR.
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Claude Review
This PR normalizes parenthesized (and previously-mismatched angle-bracket) CLI choice hints such as "(json|yaml)" in the shared OptionEnumFactory, and migrates SnykCliScraper off its own bespoke "<>[]" trim/split logic onto that shared factory (UnwrapChoiceHint/TryCreateFromHint/PreserveValueHint). I independently traced UnwrapChoiceHint, the widened Snyk angle-bracket regex capture, IsFlagOption's use of the raw (pre-unwrap) hint, and PreserveValueHint's empty-wrapper guard against every new test case (wrapped enums, wrapped true/false booleans, and the malformed/empty/mismatched-delimiter cases) and confirmed the control flow produces the expected CSharpType, IsFlag, ValueSeparator, EnumDefinition, and Description in each case.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Verified HintSyntaxDelimiters now includes '()' so inferred choices with stray parens are rejected, UnwrapChoiceHint strips one matched '(' / ')' (as well as '<>','{}','[]') pair before pipe-splitting, and PreserveValueHint's added UnwrapChoiceHint(valueHint).Length != 0 check correctly routes explicitly empty wrappers like '()' into the metadata-preserving fallback instead of silently dropping them, without changing behavior for plain non-wrapped hints.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end: rawValueHint (unmodified regex capture) now drives IsFlagOption so '()' is not misclassified as a flag, the unwrapped valueHint drives enum/boolean inference, CreateEnumDefinition delegates to OptionEnumFactory.TryCreateFromHint, and the widened SnykOptionPattern regex captures the leading '<' for incomplete angle-bracket hints so they are rejected by the shared delimiter guard instead of being misparsed as valid two-value enums.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Manually replayed all new wrapped-choice, wrapped-boolean, and twelve malformed/empty/mismatched-delimiter cases against the current SnykCliScraper/OptionEnumFactory logic; every CSharpType/IsFlag/ValueSeparator/EnumDefinition/Description assertion matches the traced control flow, including the '()' empty-wrapper and unmatched-angle-bracket regressions fixed in later commits on this head.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Confirmed the added parenthesis-wrapped, spaced, and unmatched/mismatched-paren cases exercise the already-shared DetectEnumValues -> OptionEnumFactory.UnwrapChoiceHint/TryCreateFromHint path, so the base scraper (and Docker/DotNet/Helm/Kubectl/Azure scrapers reusing it) is covered by the delimiter fix without separate production changes.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs: Checked that TryCreateFromHint rejects both '[json'/'yaml]' and '(json'/'yaml)' unmatched-delimiter cases as leftover syntax while TryCreate (the authoritative/structured path) still preserves the exact literal values, matching the stated invariant that structured enum sources keep their original punctuation.
No actionable findings.
Optional follow-up notes
SnykCliScraper.CreateEnumDefinition and IsBooleanValueHint (SnykCliScraper.cs:485, :575) still each call valueHint.Split('|', StringSplitOptions.TrimEntries) independently instead of sharing one split helper from OptionEnumFactory; a follow-up OptionEnumFactory.SplitChoiceValues(hint) reused by these two call sites, CliDocumentationScraperBase, and CobraCliScraper would fully consolidate the pipe-splitting policy so future changes (e.g. handling ||) land once. Already flagged by prior reviewers as low-priority and non-blocking.
The private IsFlagOption(string longForm, string valueHint, bool isNumeric) parameter is still named valueHint even though the call site (SnykCliScraper.cs:416) now passes rawValueHint; renaming the parameter would make the raw-vs-unwrapped distinction self-documenting and reduce the risk of a future contributor swapping in the unwrapped variable by mistake.
Per the PR description and the linked #5009 tracking issue, the checked-in Snyk generated package (e.g. SnykFailOn.Generated.cs) is now stale relative to the new shared-factory 'Allowed values for --x.' description format; this is an intentionally deferred, source-only PR per AGENTS.md's fix-then-regenerate-separately policy, not an action item for this diff, but the regeneration PR should follow promptly after merge.
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Claude Review
PR normalizes parenthesized (and previously-mismatched angle-bracket) CLI choice hints in the shared OptionEnumFactory and migrates SnykCliScraper off its own bespoke bracket-trim/pipe-split logic onto that shared factory (UnwrapChoiceHint/TryCreateFromHint/PreserveValueHint), fixing the case where hints like "(json|yaml)" previously produced literal "(json"/"yaml)" enum members. I traced the current source at head b13bbd2 end-to-end against every new/updated test case and confirmed the two previously-flagged regressions (empty () misclassified as a flag, and incomplete <json|yaml angle-bracket hints being silently accepted as a valid enum) are both fixed in the code currently on this head, matching what the prior review thread recorded.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Verified HintSyntaxDelimiters includes '()' so inferred choices with stray parens are rejected; UnwrapChoiceHint strips a single matched '<>' /'{}'/'[]'/'()' pair before pipe-splitting; and PreserveValueHint's added UnwrapChoiceHint(valueHint).Length != 0 check correctly routes explicitly-empty wrappers like '()' into the metadata-preserving fallback instead of silently dropping them, without altering behavior for ordinary non-wrapped, non-pipe hints.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end: rawValueHint (raw regex capture) now drives IsFlagOption so '()' is not misclassified as a flag; the unwrapped valueHint drives enum/boolean inference; CreateEnumDefinition delegates to OptionEnumFactory.TryCreateFromHint; and the widened SnykOptionPattern regex (line 826) now captures the leading '<' plus optional trailing '>' as part of the value group, so incomplete/mismatched angle-bracket hints are rejected by the shared delimiter guard rather than being misparsed as valid two-value enums.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Manually replayed all wrapped-choice, wrapped-boolean, and twelve malformed/empty/mismatched-delimiter cases (including '()', '[]', '{}', '<>', unmatched and mismatched parens/brackets, and double-pipe hints) against the current SnykCliScraper/OptionEnumFactory control flow; every CSharpType/IsFlag/ValueSeparator/EnumDefinition/Description assertion matches what the code currently produces.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Confirmed the added parenthesis-wrapped, spaced, and unmatched/mismatched-paren cases (e.g. '(json|yaml]') correctly flow through DetectEnumValues -> EnumPipePattern -> OptionEnumFactory.TryCreateFromHint and are rejected due to the leftover '(' delimiter, verifying the base scraper (and Docker/DotNet/Helm/Kubectl/Azure scrapers reusing it) benefits from the fix without separate production changes.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs: Checked that the parameterized Syntax_Delimiters_Are_Rejected_Only_For_Inferred_Choices test correctly exercises both '[json'/'yaml]' and '(json'/'yaml)' unmatched-delimiter cases, confirming TryCreateFromHint rejects them while TryCreate (the authoritative/structured path) still preserves the literal values as intended.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/CobraCliScraperTests.cs: Verified the added '(json|yaml)' argument to Type_Hint_Strips_Choice_Wrappers exercises the real Cobra option-parsing pipeline end-to-end and asserts the resulting EnumDefinition values are exactly ['json','yaml'].
No actionable findings.
Optional follow-up notes
SnykCliScraper.CreateEnumDefinition (line 485) and IsBooleanValueHint (line 575) each independently call valueHint.Split('|', StringSplitOptions.TrimEntries) instead of sharing one split helper from OptionEnumFactory. A follow-up OptionEnumFactory.SplitChoiceValues(hint) reused by these two call sites, CliDocumentationScraperBase, and CobraCliScraper would fully consolidate the pipe-splitting policy so future changes (e.g. handling '||') land once instead of being re-implemented per scraper. Already flagged by prior reviewers as low-priority and non-blocking.
The private IsFlagOption(string longForm, string valueHint, bool isNumeric) parameter at SnykCliScraper.cs:446 is still named 'valueHint' even though the call site (line 416) now passes 'rawValueHint' (the un-unwrapped capture). Renaming the parameter to 'rawValueHint' would make the raw-vs-unwrapped distinction self-documenting and reduce the risk of a future contributor accidentally passing the unwrapped variable instead.
OptionEnumFactory.PreserveValueHint's new 'UnwrapChoiceHint(valueHint).Length != 0' guard (Generators/OptionEnumFactory.cs:77) affects every caller (Docker/DotNet/Helm/Kubectl/Cobra scrapers), not just Snyk: a bare empty wrapper like '<>' or '[]' passed as a valueType hint anywhere will now append '[value type: ...]' metadata instead of being silently skipped, whereas previously it fell through unchanged. This looks like an intentional and correct generalization of the fix (consistent with the PR's stated goal of preserving malformed/empty hints), and no existing test in those other scrapers' suites exercises an empty-wrapper valueType, so there is no observed regression risk, but it's worth being aware this widens the fix's blast radius beyond Snyk.
The checked-in generated Snyk package (e.g. SnykFailOn.Generated.cs) is stale relative to the new shared-factory 'Allowed values for --x.' description format; this is an intentionally deferred, source-only PR per AGENTS.md's fix-then-regenerate-separately policy and is already tracked via #5009 and acknowledged multiple times in the PR thread, so it is not an action item for this diff.
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Claude Review
PR normalizes parenthesized (and previously mismatched angle-bracket) CLI choice hints such as "(json|yaml)" in the shared OptionEnumFactory (delimiter guard + UnwrapChoiceHint), and migrates SnykCliScraper off its own bespoke bracket-trim/pipe-split logic onto that shared factory (UnwrapChoiceHint/TryCreateFromHint/PreserveValueHint). Across this review thread's iterations, two regressions were found and fixed: an explicit empty wrapper () being misclassified as a flag, and an incomplete <json|yaml angle-bracket hint being silently accepted as a valid two-value enum. I re-traced the current head (dbf382d) end-to-end for every new/updated test case and confirmed both prior regressions remain fixed and no new defect is present.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Verified HintSyntaxDelimiters includes '()' so inferred choices with stray parens are rejected; UnwrapChoiceHint strips one matched '<>'/'{}'/'[]'/'()' pair before pipe-splitting; and PreserveValueHint's added UnwrapChoiceHint(valueHint).Length != 0 check correctly routes explicitly-empty wrappers like '()' into the metadata-preserving fallback instead of silently dropping them, without altering behavior for ordinary non-wrapped, non-pipe hints used by other scrapers.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end at the current head: rawValueHint (unmodified regex capture) drives IsFlagOption so '()' is not misclassified as a flag; the unwrapped valueHint drives enum/boolean inference; CreateEnumDefinition delegates to OptionEnumFactory.TryCreateFromHint; and the widened SnykOptionPattern regex (line 826) captures the leading '<' plus optional trailing '>' as part of the value group, so incomplete/mismatched angle-bracket hints like '<json|yaml' are rejected by the shared delimiter guard instead of being misparsed as valid two-value enums.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Manually replayed all wrapped-choice, wrapped-boolean, and twelve malformed/empty/mismatched-delimiter cases (including '()', '[]', '{}', '<>', unmatched and mismatched parens/brackets, and double-pipe hints) against the current SnykCliScraper/OptionEnumFactory control flow; every CSharpType/IsFlag/ValueSeparator/EnumDefinition/Description assertion matches what the code currently produces, confirming --mode is not in NumericOptions/ValueOptionsWithoutHelpPlaceholders so the flag-classification logic behaves as the tests expect.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs: Checked that the parameterized Syntax_Delimiters_Are_Rejected_Only_For_Inferred_Choices test correctly exercises both '[json'/'yaml]' and '(json'/'yaml)' unmatched-delimiter cases, confirming TryCreateFromHint rejects them while TryCreate (the authoritative/structured path) still preserves the exact literal values as intended.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Confirmed the added parenthesis-wrapped, spaced, and unmatched/mismatched-paren cases correctly flow through the already-shared DetectEnumValues -> OptionEnumFactory.UnwrapChoiceHint/TryCreateFromHint path, so the base scraper (and Docker/DotNet/Helm/Kubectl/Azure scrapers reusing it) benefits from the delimiter fix without needing separate production changes.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/CobraCliScraperTests.cs: Verified the added '(json|yaml)' argument to Type_Hint_Strips_Choice_Wrappers exercises the real Cobra option-parsing pipeline end-to-end and asserts the resulting EnumDefinition values are exactly ['json','yaml'], not literal paren-prefixed strings.
No actionable findings.
Optional follow-up notes
SnykCliScraper.CreateEnumDefinition and IsBooleanValueHint each independently call valueHint.Split('|', StringSplitOptions.TrimEntries) instead of sharing one split helper from OptionEnumFactory. Consolidating into a shared OptionEnumFactory.SplitChoiceValues(hint) used by these two call sites plus CliDocumentationScraperBase and CobraCliScraper would ensure future split-policy changes (e.g. handling ||) land in one place. This is a maintainability improvement, not a correctness issue, and was already flagged as low-priority by prior reviewers.
The private IsFlagOption(string longForm, string valueHint, bool isNumeric) parameter is still named 'valueHint' even though the call site (SnykCliScraper.cs:416) now passes 'rawValueHint' (the un-unwrapped capture). Renaming the parameter to 'rawValueHint' would make the raw-vs-unwrapped distinction self-documenting and reduce the risk of a future contributor accidentally passing the unwrapped variable instead.
OptionEnumFactory.PreserveValueHint's new 'UnwrapChoiceHint(valueHint).Length != 0' guard affects every caller (Docker/DotNet/Helm/Kubectl/Cobra scrapers), not just Snyk: a bare empty wrapper like '<>' or '[]' passed as a valueType hint anywhere will now append '[value type: ...]' metadata instead of being silently dropped. This looks like an intentional, correct generalization consistent with the PR's stated goal, and no existing test in those other scrapers exercises an empty-wrapper valueType, so there's no observed regression risk, but it's worth flagging that the fix's blast radius extends beyond Snyk.
Per the PR description and linked #5009, the checked-in generated Snyk package (e.g. SnykFailOn.Generated.cs) is now stale relative to the new shared-factory 'Allowed values for --x.' description format. This is an intentionally deferred, source-only PR per AGENTS.md's fix-then-regenerate-separately policy and is already tracked via #5009 and acknowledged multiple times in the PR thread (including Codex's outstanding P1 comment on this exact head), so it is not an action item for this diff.
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Claude Review
This source-only fix normalizes parenthesized/angle-bracket CLI choice hints in the shared OptionEnumFactory and migrates SnykCliScraper's ad hoc bracket-trim/pipe-split logic onto that shared factory. I re-traced the current head (e33651e) against every regression test, including the two Codex P2 findings from the prior head (optional-heading bracket leakage into value hints, and empty '[]' defaults being mislabeled as value-type metadata), and confirmed both are fixed correctly with no new defects introduced.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Confirmed HintSyntaxDelimiters now includes '()', UnwrapChoiceHint strips a matched (),{},[],<> pair, and PreserveValueHint's guard (no '|' and no leading '{') leaves plain empty-list defaults like '[]' untouched, satisfying the Docker/Kubectl empty-default regression test.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end: the widened optional-bracket/angle-bracket regex plus the new 'strip one trailing ] when optional matched' logic correctly separates a heading's closing bracket from the value hint before calling UnwrapChoiceHint, and rawValueHint (not the unwrapped hint) drives IsFlagOption and the empty-placeholder metadata append, so '()' stays a string option and '[--mode=[json|yaml]]' still yields a two-value enum.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Manually replayed the wrapped-choice, wrapped-boolean, optional-heading (bracket/paren/brace/angle), empty-placeholder, and malformed/unmatched-delimiter cases against the current control flow; every CSharpType/IsFlag/ValueSeparator/EnumDefinition/Description assertion is produced correctly by the traced logic.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/DockerDocumentationScraperTests.cs: Verified the new Empty_List_Default_Does_Not_Become_Value_Type_Metadata end-to-end test exercises the shared PreserveValueHint guard through the real Docker table scraper and confirms a '[]' default cell does not get relabeled as '[value type: []]'.
No actionable findings.
Optional follow-up notes
This is the final commit (e33651e) of a long review thread; both outstanding Codex P2 findings from the previous head (optional-bracket leakage into the value hint at SnykCliScraper.cs:404-408, and empty-list defaults like Docker's '[]' being mislabeled as '[value type: []]' via the shared PreserveValueHint) are fixed at this head and independently reverified by re-tracing the control flow rather than relying on the prior thread's self-report.
Non-blocking, previously flagged and still true: SnykCliScraper.CreateEnumDefinition (line ~494) and IsBooleanValueHint each independently call valueHint.Split('|', StringSplitOptions.TrimEntries) instead of a shared OptionEnumFactory helper; consolidating into one OptionEnumFactory.SplitChoiceValues(hint) reused by Snyk, CliDocumentationScraperBase, and CobraCliScraper would ensure future split-policy changes (e.g. handling '||') land once instead of being re-implemented per scraper.
Non-blocking, previously flagged and still true: the private IsFlagOption(string longForm, string valueHint, bool isNumeric) parameter is still named 'valueHint' even though CreateOption now passes 'rawValueHint' (the un-unwrapped capture); renaming the parameter would make the raw-vs-unwrapped distinction self-documenting and reduce the risk of a future contributor swapping in the unwrapped variable.
Per AGENTS.md and the PR's own description, the checked-in generated Snyk package (e.g. SnykFailOn.Generated.cs) is now stale relative to the new shared-factory 'Allowed values for --x.' description format; this is an intentionally deferred, source-only PR with regeneration tracked separately via #5009 and should not be treated as an action item for this diff.
…-parentheses-20260921
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Claude Review
This source-only fix normalizes parenthesized (and previously mismatched angle-bracket) CLI choice hints in the shared OptionEnumFactory and migrates SnykCliScraper off its own bespoke bracket-trim/pipe-split logic onto that shared factory. I re-traced the code at the current review head (e844196, which merges main's unrelated Google fixes on top of the already-reviewed e33651e state) against every regression test added across this PR's long review thread — wrapped choices, wrapped true/false booleans, optional-heading brackets/parens/braces/angles, explicit empty placeholders, and a dozen malformed/unmatched-delimiter cases — and confirmed all previously reported P1/P2 regressions (empty '()' misclassified as a flag, incomplete angle-bracket hints silently accepted as valid enums, optional-heading brackets leaking into the value hint, and empty-list defaults being mislabeled as value-type metadata) remain fixed with no new defects introduced.
Review evidence
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs: Verified HintSyntaxDelimiters now includes '()' so inferred choices with stray parens are rejected, and UnwrapChoiceHint strips a single matched '(' / ')' pair (alongside '<>','{}','[]') before pipe-splitting, so '(json|yaml)' now yields 'json','yaml' instead of literal '(json'/'yaml)' members; PreserveValueHint itself is untouched by this diff, which is correct since the empty-wrapper handling was relocated to the Snyk call site instead of widening the shared helper's blast radius.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/SnykCliScraper.cs: Traced CreateOption end-to-end at head e844196: the widened SnykOptionPattern regex captures an optional leading '[' heading bracket and the value token (including a full '<...>' delimiter pair) separately; CreateOption strips one trailing ']' only when the heading bracket matched, then calls UnwrapChoiceHint on the remainder so '[--mode=[json|yaml]]' still isolates 'json|yaml' rather than leaving a stray ']'. IsFlagOption now receives rawValueHint so an explicit empty '()' is not misclassified as a flag, and the explicit-empty-placeholder branch (rawValueHint.Length>0 && valueHint.Length==0) appends '[value type: ...]' directly so malformed/empty wrappers keep their exact text without relying on the shared PreserveValueHint's now-unchanged, narrower guard. CreateEnumDefinition/IsBooleanValueHint delegate enum creation to OptionEnumFactory.TryCreateFromHint, closing the parenthesized-hint bug that was previously unique to Snyk's independent bracket-trim/split parser.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/SnykCliScraperTests.cs: Replayed all added cases (optional-heading brackets/parens/braces/angles, empty placeholders in each wrapper, wrapped true/false booleans, and twelve malformed/unmatched-delimiter hints) against the current SnykCliScraper/OptionEnumFactory control flow; every CSharpType/IsFlag/ValueSeparator/EnumDefinition/Description assertion matches what the traced code currently produces, including AppendMetadata's containment check preventing the '{}' case from duplicating its '[value type: {}]' annotation when both the Snyk-side append and PreserveValueHint's fallback path run.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs: Confirmed the new parenthesis-wrapped, spaced, and unmatched/mismatched-paren cases correctly flow through the already-shared DetectEnumValues -> OptionEnumFactory.UnwrapChoiceHint/TryCreateFromHint path, so Docker/DotNet/Helm/Kubectl/Azure scrapers that reuse this base class benefit from the delimiter fix without any separate production change, and unmatched wrappers are still rejected.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs: Checked TryCreateFromHint rejects both '[json'/'yaml]' and the new '(json'/'yaml)' unmatched-delimiter cases as leftover syntax while TryCreate (the authoritative/structured path) still preserves the literal punctuation, matching the PR's stated invariant that structured enum sources retain exact values; also confirmed PreserveValueHint(null, 'Set labels.', '[]') stays unchanged so empty-list defaults aren't mislabeled as value-type metadata.
No actionable findings.
Optional follow-up notes
SnykCliScraper.CreateEnumDefinition and IsBooleanValueHint each independently call valueHint.Split('|', StringSplitOptions.TrimEntries) instead of sharing one split helper from OptionEnumFactory. A follow-up OptionEnumFactory.SplitChoiceValues(hint), reused by these two call sites plus CliDocumentationScraperBase and CobraCliScraper, would fully consolidate the pipe-splitting policy so future changes (e.g. handling '||') land in one place instead of being re-implemented per scraper. This is a maintainability improvement only; behavior is currently correct and covered by tests, and this was already flagged as low-priority by earlier review rounds on this same PR.
The private IsFlagOption(string longForm, string valueHint, bool isNumeric) parameter is still named 'valueHint' even though CreateOption's call site now passes 'rawValueHint' (the pre-unwrap capture). Renaming the parameter to 'rawValueHint' would make the raw-vs-unwrapped distinction self-documenting at the call site and reduce the risk of a future contributor swapping in the unwrapped variable by mistake. Non-blocking cosmetic issue, previously flagged.
Per the PR description, AGENTS.md's source-first/regenerate-separately policy, and Codex's outstanding P1 comment, the checked-in generated Snyk package (e.g. SnykFailOn.Generated.cs) is now stale relative to the shared-factory 'Allowed values for --x.' description format produced by this source-only change. This is intentionally deferred and tracked via #5009, so it is not an action item for this diff, but the regeneration PR should be produced and reviewed promptly after this merges.
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Parenthesized CLI choice hints such as
(json|yaml)emitted parentheses as literal enum values. The shared factory now unwraps matching choice delimiters and rejects unmatched delimiters while preserving structured enum punctuation. Snyk uses the shared factory, separates optional heading brackets from value wrappers, and preserves boolean and empty value placeholders correctly.Validation: 112 focused Snyk, shared-factory, and Docker documentation tests pass. Nine review regression cases fail before the fixes and pass afterward. Full generator CI passes all 3,376 tests at e844196; scoped formatting and diff checks pass. Current-head reviews confirm no source defects.
Refs #5009. As required by AGENTS.md, this source-only fix precedes authoritative Snyk regeneration from latest main. The separate generated-output acceptance remains tracked in #5009. No generated options or API baselines are edited here.