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fix(generator): preserve shared enum values before regeneration - #5118

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issue-5117-shared-enum-source
Sep 14, 2026
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issue-5117-shared-enum-source

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@thomhurst

@thomhurst thomhurst commented Sep 14, 2026

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AWS, Cobra, documentation, and enhancement paths previously built enums with different member limits and could drop distinct CLI values after name normalization. This change routes them through one factory that preserves exact literals and per-value documentation, deduplicates exact values, disambiguates C# member names, and applies a shared 2–20-member policy. Ambiguous or oversized inferred choices retain a string contract and their source metadata.

This is the generator prerequisite for #5009, extracted from #5091 at b779e94 onto main c107d8c. It includes the tested generation prerequisites: independent enhancement resilience using configured deadlines, authenticated GH extension inventory, and rejection of partial optional-subtree coverage. The only source changes beyond that extraction are the three ConfigureAwait(false) additions and extension-row parser extraction already reviewed in #5116 (ce9af0d).

Validation after rebasing onto main 1456047:

  • Release generator solution build: zero warnings or errors.
  • All 1,771 scraper, type-detection, and generator tests passed under the default 10-minute/2-GB guard.
  • Scoped severity-info formatting applied; git diff --check passed. Severity-info verification still exits 2 with diagnostics that the formatter cannot fully fix; it is not claimed passing.

Rebase preserves main's bracketed-default parsing, repeatable-option lookahead, and gcloud resource arguments alongside the shared enum changes. Current head: 2de0a52.

No generated integration output changes in this PR. Parent #5009 remains open for the full consumer audit, all 47 automatic tools' current-output regeneration, options/services/documentation/API/provenance, and matching runtime checks after source prerequisites land. The stale Redshift/generated-output review thread on #5091 remains unresolved.

Closes #5117

Refs #5009

Summary by CodeRabbit

  • New Features

    • Improved CLI option generation with more accurate enum detection and preservation of case-sensitive values.
    • Better handling of choice lists, punctuation, wrappers, long values, and free-form text.
    • Added asynchronous tool-definition generation, including improved detection of optional CLI extensions.
  • Bug Fixes

    • Prevented ambiguous, numeric-only, incomplete, or oversized value lists from being incorrectly converted into enums.
    • Improved command coverage validation when optional command trees or extensions are unavailable.
    • Preserved existing generated output when coverage information cannot be verified.

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Plan: Advanced

Run ID: 6015f4a0-db51-48ef-a901-8254196ac91f

📥 Commits

Reviewing files that changed from the base of the PR and between 57b2949 and 1685273.

📒 Files selected for processing (3)
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/AwsCliScraperTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/AwsCliScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/CliScraperBase.cs
📝 Walkthrough

Walkthrough

The generator adds shared enum construction and value-hint preservation. CLI tool-definition creation now supports asynchronous installation metadata checks. Coverage validation distinguishes absent command subtrees from partially visible subtrees. Tests cover enum parsing, enhancement, coverage, and authenticated GitHub CLI generation.

Changes

Generator behavior

Layer / File(s) Summary
Shared enum construction and scraper integration
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs, .../Scrapers/**, .../Tests/**
Enum creation is centralized. Literal values, descriptions, casing, punctuation, wrappers, member limits, and fallback descriptions receive expanded coverage.
Async metadata and option enhancement
.../Scrapers/Cli/ICliScraper.cs, .../Scrapers/Cli/GhCliScraper.cs, .../Scrapers/ScrapingOrchestrator.cs, .../TypeDetection/OptionTypeEnhancer.cs, .../Generators/CodeGeneratorOrchestrator.cs
Tool-definition creation uses asynchronous APIs. GitHub CLI metadata is probed before generation. Option enhancement attaches detected enums and preserved descriptions to options.
Coverage validation and generation wiring
.../Generators/CommandCoverageGuard.cs, .github/workflows/generate-cli-options.yml, .../Tests/Scrapers/Cli/GhCommandCoverageTests.cs
Coverage checks allow a missing conditional subtree only when the complete subtree is absent. The workflow supplies GH_TOKEN for gh. Tests cover unreliable inventories and partial subtree visibility.

Priority: ⬇️ Low

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant Generator
  participant ScrapingOrchestrator
  participant GhCliScraper
  participant CommandCoverageGuard
  participant OptionTypeEnhancer
  Generator->>ScrapingOrchestrator: Scrape and enhance CLI definition
  ScrapingOrchestrator->>GhCliScraper: CreateToolDefinitionAsync
  GhCliScraper->>GhCliScraper: Read extension inventory
  ScrapingOrchestrator->>OptionTypeEnhancer: Enhance options
  OptionTypeEnhancer->>OptionTypeEnhancer: Create or preserve enum metadata
  Generator->>CommandCoverageGuard: Validate scraped command coverage
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Merge Risk: 🟡 Moderate · up to 57b29

Some AWS option descriptions can generate an incorrect closed enum instead of retaining a string option, preventing valid values from being represented. Fix the conjunction handling before merge.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 17.16% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 134 functions across 27 files. (2 skipped… Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately describes a central change: preserving shared enum values before regeneration. It is concise and specific.
Linked Issues check ✅ Passed The PR meets the coding requirements in [#5117]. OptionEnumFactory centralizes enum construction for CLI, AWS, Cobra, documentation, and enhancement paths. It preserves literals and descriptions, de…
Out of Scope Changes check ✅ Passed The changes remain within [#5117]. The workflow authentication, asynchronous tool-definition path, coverage-guard changes, parser extraction, ConfigureAwait(false) updates, formatting changes, and p…
Full details: Docstring Coverage

Explanation

Docstring coverage is 17.16% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 134 functions across 27 files. (2 skipped: 2 unsupported.)

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📝 Generate docstrings 💡
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  • Create PR with unit tests
  • Commit unit tests in branch issue-5117-shared-enum-source

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Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review Status Commit Review trigger
📝 Code Review Completed 2026-09-14T17:12:01.424057Z 1685273 Manual request
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@greptile-apps

greptile-apps Bot commented Sep 14, 2026

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Greptile Summary

This PR centralizes inferred CLI enum construction so exact literals and per-value documentation survive regeneration while ambiguous or oversized choices retain their string contracts. Changes since the previous review additionally refine usage-synopsis resolution and positional-operand handling across CLI scrapers.

  • Preserves case-sensitive and normalization-colliding enum values with deterministic C# identifiers.
  • Applies a shared 2–20 distinct-member policy across AWS, Cobra, documentation, and enhancement paths.
  • Retains source choice metadata when enum inference falls back to a string.
  • Resolves option operands versus positional arguments using known option shapes, including inherited flags and alternative invocation forms.
  • Adds focused regression coverage for enum parsing, scraper coverage, optional CLI extensions, and positional operands.

Confidence Score: 5/5

The PR appears safe to merge, with no actionable new defects or outstanding previous findings identified.

The shared enum path preserves exact CLI values and metadata while safely falling back for ambiguous or oversized sets, and the subsequent positional-resolution changes are covered across the affected scraper scenarios. The prior ConfigureAwait finding was fixed and its thread was manually resolved.

Important Files Changed

Filename Overview
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs Introduces the shared enum factory, exact-value deduplication, deterministic member generation, and string-fallback metadata preservation.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/TypeDetection/OptionTypeEnhancer.cs Routes enhanced enum detections through the shared factory while preserving existing documentation; the previously reported await configuration issue is resolved.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/AwsCliScraper.cs Strengthens inferred AWS choice parsing and retains ambiguous input as documented string metadata.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/UsageSynopsisParser.cs Reconciles parsed operands with known option shapes and reranks alternative synopsis forms.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/CliScraperBase.cs Applies resolved option usage consistently and includes effective global options when extracting positional operands.
tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/CargoCliScraper.cs Supports Cargo’s custom clap option headings and uses shared positional-operand resolution.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
  A[CLI help or structured choices] --> B{Authoritative structured values?}
  B -->|Yes| C[Deduplicate exact literals]
  B -->|No| D[Validate inferred hint syntax]
  D -->|Ambiguous or malformed| E[Keep string contract and metadata]
  D -->|Valid| C
  C --> F{2–20 distinct values?}
  F -->|No| E
  F -->|Yes| G[Create deterministic unique C# members]
  G --> H[Preserve literal values and documentation]
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Reviews (5): Last reviewed commit: "fix(generator): reject uppercase ambiguo..." | Re-trigger Greptile

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Review: fix(generator): preserve shared enum values before regeneration

Reviewed the full diff (gh pr diff 5118) against its extensive new test coverage. No pre-existing human/bot review findings were available to cross-check — CodeRabbit hit its OSS review rate limit and the Codex review was still running at review time, so this is a first pass.

What this PR does

Consolidates AWS/Cobra/documentation/enhancement enum construction into a single OptionEnumFactory, fixes several correctness gaps in the process:

  • OptionEnumFactory: one factory (2–20 member policy, StringComparer.Ordinal dedup by exact CLI value, deterministic member-name disambiguation via EnumGenerator.GetUniqueValues) shared by all detection paths. TryCreateFromHint adds a lexical guard (rejects delimiter chars / non-letter-only values) for inferred hints, while TryCreate accepts structured/authoritative choices (including symbols/digits) unguarded — a sensible split since structured sources (e.g. clap --help) are trustworthy but free-text hints are not.
  • AwsCliScraper.TryDetectEnum: reworked regex + ParseEnumChoices to separate real list grammar ("a, b, and c") from ambiguous prose, and to detect a wrapped-value artifact ("- " after whitespace normalization) so a genuinely hyphenated CLI value isn't corrupted by a line-wrapped --help render. I traced this against all the new [Arguments] cases (comma lists, trailing conjunctions, literal "and"/"or" values, bullet-marker "o x o y" parsing, wrapped Redshift --source-type) and the logic matches every expected outcome.
  • CommandCoverageGuard.ValidateCoveragePolicy: the conditional-availability exemption now only covers a subtree when no part of it is still visible in the current scrape (absentConditionalRoots), and then extends the exemption to that subtree's previously-known descendants + sentinels. This closes a real gap: previously any predeclared "conditionally available" root was always exempted regardless of whether it was actually still present. Traced against Missing_Whole_Subtree_Requires_Independent_Absence_Evidence and the extended Only_Extension_Absence_Is_Allowed_At_The_Same_Version cases (including the retainDescendants partial-visibility case) — behavior matches.
  • GhCliScraper.CreateToolDefinitionAsync: now confirms gh stack availability via a live gh extension list call instead of a hardcoded assumption, and fails closed (InvalidOperationException) on any unreliable/malformed output rather than silently trusting a broken probe. Reasonable given the coverage guard now depends on this signal being accurate.
  • OptionTypeEnhancer: stops carrying forward a stale CliEnumDefinition in command.Enums when the option that owned it now has a different (or no) enum after enhancement — avoids generating an orphaned/stale enum class. The name-based exclusion (originalOptionEnums) plus DistinctBy correctly handles the "fell back to string" and "replaced with new values" cases per the new tests.
  • Workflow: scoping GH_TOKEN to only the gh matrix job is appropriately minimal (uses the default github.token, not a new secret).

Notes (non-blocking)

  • AwsCliScraper.ParseEnumChoices's bullet-marker heuristic ("o x o y" pattern) and the general token-splitting branch are still somewhat ad-hoc string heuristics rather than a real grammar; that's consistent with the rest of this file's pre-existing style and is well covered by tests, so not asking for a rework here.
  • Per the PR description, this is an extraction of already-reviewed work from fix(generator): preserve enum values across shared factories #5091, with generated CLI output intentionally out of scope (deferred to Generator: consolidate value-preserving option enum factories #5009). Consistent with CLAUDE.md's guidance to fix scraper/generator logic rather than hand-edit generated options.

No actionable correctness or design issues found.

@thomhurst
thomhurst force-pushed the issue-5117-shared-enum-source branch from dfe5662 to 2de0a52 Compare September 14, 2026 16:11
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Rebased onto current main and preserved both sets of parser regressions. Remote head is 2de0a52. Release build passes, and all 1,771 scraper, type-detection, and generator tests pass. Applied scoped formatter fixes; severity-info verification still reports remaining diagnostics and is not claimed passing. @codex review

@thomhurst
thomhurst deployed to Pull Requests September 14, 2026 16:15 — with GitHub Actions Active
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Review: fix(generator): preserve shared enum values before regeneration

I re-read the full diff at head 2de0a521b3de0fa58bb959c625fa5e77dd78374c independently of the prior automated review on this PR (which was CLEAR at dfe5662..., before the rebase). The two commits on the current head are:

  1. 39cb479e — same logical change as previously reviewed (rebase re-hash), consolidating enum construction into OptionEnumFactory plus the gh-extension-probe / coverage-guard / enhancer fixes.
  2. 2de0a521 — formatting only (primary constructors, collection expressions with with(...), Length != 0 instead of .Any(), ordinal TagName comparisons, brace-wrapped single-line ifs). I diffed this commit in isolation and confirmed no behavioral change.

Key points I traced through the source (not just the tests):

  • OptionEnumFactory (Generators/OptionEnumFactory.cs): single 2–20 member policy, StringComparer.Ordinal grouping so case variants (PUBLIC/public) survive as distinct values, deterministic member disambiguation via EnumGenerator.GetUniqueValues. TryCreateFromHint correctly restricts the letter-only/no-delimiter guard to inferred hints, while TryCreate (used for structured/authoritative sources like clap --help and AWS "Possible values:") accepts symbols/digits. This split is sound: structured sources are a reliable grammar, free-text hints are not.
  • AwsCliScraper.TryDetectEnum/ParseEnumChoices: the new EnumValuesPattern regex stops the capture at a genuine sentence boundary (\. followed by whitespace/end) rather than any dot, so values like net8.0 survive; the "- " wrapped-value check correctly falls back to a string rather than guessing whether a hyphen is a genuine literal or a line-wrap artifact. Conjunction handling (and/or as trailing list glue vs. standalone literal values) matches the added test matrix.
  • CommandCoverageGuard.ValidateCoveragePolicy: now only exempts a conditionally-available subtree when no part of it is still visible (absentConditionalRoots), then extends the exemption to that subtree's descendants sourced from the previous manifest + configured sentinels. This closes the real gap where a predeclared "conditionally available" root was exempted unconditionally regardless of current visibility.
  • GhCliScraper.CreateToolDefinitionAsync: verifies gh stack via a live, validated gh extension list call and fails closed (InvalidOperationException) on any malformed/unreliable output (wrong field count, missing tab-separated command name, non-empty stderr, non-success exit). This is exactly the kind of independent evidence CommandCoverageGuard now requires.
  • OptionTypeEnhancer: no longer lets a stale command.Enums entry shadow an option whose enum was replaced or fell back to a string — it now derives the enum set from the enhanced options first, then adds back only unrelated original enums by name. OptionsGeneratorCommand.CreateTypeEnhancer was correspondingly simplified to pass the raw ProcessCliCommandExecutor, since OptionTypeEnhancer.CreateDefault now does its own ResilientCliCommandExecutor wrapping internally — avoids the previous double-wrap and centralizes the retry/circuit policy in one place.
  • Workflow: GH_TOKEN is scoped only to the gh matrix job via matrix.tool == 'gh' && github.token || '', consistent with least-privilege.

Nothing here reintroduces the gap the earlier review already flagged as fixed, and the rebase didn't silently drop any of the previously-validated AWS/GH/coverage-guard behavior — I checked the new test files line-by-line against the corresponding source logic rather than just trusting the PR description.

Per CLAUDE.md, generated CLI output is out of scope for this PR (deferred to #5009), and no generated output files are touched here — consistent with the description.

No actionable correctness, design, or maintainability issues found.

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Codex Review: Didn't find any major issues. 🚀

Reviewed commit: 2de0a521b3

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Addressed the new ConfigureAwait(false) finding in 57b2949. Remote head confirmed, review thread resolved. Release build and all 16 OptionTypeEnhancer tests pass; scoped default formatting and diff checks pass. @codex review

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Review: fix(generator): preserve shared enum values before regeneration

Re-reviewed the full diff at head 57b2949f299a75c756d2561d54bd92df3401ad6d, independently of prior automated passes on this PR. This head adds one commit since the last review: the ConfigureAwait(false) fix for the three async calls introduced by this PR (CodeGeneratorOrchestrator.cs, GhCliScraper.cs, OptionTypeEnhancer.cs). I confirmed all three await sites now carry ConfigureAwait(false), matching the library-code convention in CLAUDE.md, and that finding is resolved. No new issues introduced by this commit — it's a pure fix to the previously flagged awaits.

Traced the rest of the diff again from scratch to sanity-check the prior passes' conclusions:

  • OptionEnumFactory: single shared 2–20-member policy, StringComparer.Ordinal dedup, deterministic member disambiguation via EnumGenerator.GetUniqueValues. The TryCreateFromHint/TryCreate split (lexical guard only for inferred hints, not structured/authoritative sources) is sound and well-documented in the code comment.
  • AwsCliScraper.TryDetectEnum/ParseEnumChoices: the new grammar (sentence-boundary regex, wrapped-hyphen guard, conjunction-vs-literal handling for "and"/"or", bullet-marker "o x o y" parsing) correctly separates real value lists from prose, matching the added test matrix.
  • CommandCoverageGuard.ValidateCoveragePolicy: conditional-availability exemption now requires the whole subtree to be absent (absentConditionalRoots) before exempting descendants, closing the previous gap where a predeclared root was exempted unconditionally.
  • GhCliScraper.CreateToolDefinitionAsync: verifies gh stack via a live, validated gh extension list call and fails closed on any malformed output. The companion workflow change scopes GH_TOKEN to only the gh matrix entry using the default github.token, which is appropriately minimal.
  • OptionTypeEnhancer: no longer lets a stale command.Enums entry shadow an option whose enum was replaced or fell back to a string. I checked the edge case where re-detection reports enum type/values but OptionEnumFactory.TryCreate rejects the count (outside 2–20): effectiveEnumDef correctly falls back to a string contract with PreserveChoices metadata rather than silently keeping a stale definition — consistent with the PR's stated policy for ambiguous/oversized inferred choices.
  • PublicAPI.Unshipped.txt: correctly tracks the new CreateToolDefinitionAsync surface (interface, base virtual, and GhCliScraper override) and the removed AwsCliScraper.MaxParallelism override — this is hand-maintained analyzer bookkeeping for source code, not generated CLI options, so editing it directly here is correct per CLAUDE.md.

No pre-existing findings remain unaddressed, and I found no new issues in this pass. This looks safe to merge on the current head, contingent on the CI checks the PR description notes (severity-info formatting diagnostics, parent #5009 for full regeneration).

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Codex Review: Didn't find any major issues. Already looking forward to the next diff.

Reviewed commit: 57b2949f29

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Actionable comments posted: 1

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Inline comments:
In
`@tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/AwsCliScraper.cs`:
- Line 536: Update the conjunction detection in the token filtering expression
to compare “and” and “or” using ordinal case-insensitive matching, so uppercase
or mixed-case conjunctions trigger the existing empty-result fallback instead of
being treated as enum values.

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Run ID: 4f7b4df7-9319-4754-a379-a3db8e261804

📥 Commits

Reviewing files that changed from the base of the PR and between 1456047 and 57b2949.

📒 Files selected for processing (29)
  • .github/workflows/generate-cli-options.yml
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/CodeGeneratorOrchestratorTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Generators/OptionEnumFactoryTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/AwsCliScraperTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Base/CliDocumentationScraperBaseTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/Cli/GhCommandCoverageTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/CobraCliScraperTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/Scrapers/DockerDocumentationScraperTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator.Tests/TypeDetection/OptionTypeEnhancerTests.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/CodeGeneratorOrchestrator.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/CommandCoverageGuard.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/EnumGenerator.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Generators/OptionEnumFactory.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Models/CliToolDefinition.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/OptionsGeneratorCommand.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/PublicAPI.Unshipped.txt
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Base/CliDocumentationScraperBase.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/AwsCliScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/CliScraperBase.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/CobraCliScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/GhCliScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/Cli/ICliScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/DockerDocumentationScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/DotNetCliDocumentationScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/HelmDocumentationScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/KubectlDocumentationScraper.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/Scrapers/ScrapingOrchestrator.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/TypeDetection/DescriptionEnumValueParser.cs
  • tools/ModularPipelines.OptionsGenerator/src/ModularPipelines.OptionsGenerator/TypeDetection/OptionTypeEnhancer.cs

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Addressed the latest uppercase conjunction finding in 7127a9d. Remote head confirmed, thread resolved. Release build and all 51 AWS scraper tests pass; scoped default formatting and diff checks pass. @codex review

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Review: fix(generator): preserve shared enum values before regeneration

Re-reviewed at head 7127a9d8beaf009a4925f8ed2a2725f704a69794, which adds exactly one new commit since the last CLEAR pass at 57b2949f: fix(generator): reject uppercase ambiguous enum conjunctions (#5117).

What's new in this commit

AwsCliScraper.ParseEnumChoices's no-comma (prose) branch now checks for "and"/"or" tokens with StringComparison.OrdinalIgnoreCase instead of an ordinal/case-sensitive comparison, so uppercase or mixed-case conjunctions (AND, OR, And, oR) in unlisted prose are correctly treated as ambiguous and rejected (falls back to a string contract) rather than being misread as literal enum values or silently accepted.

I traced this against the new test cases:

  • Enum_Detection_Rejects_Ambiguous_Conjunctions_In_Any_Case("AND"/"OR"/"And"/"oR")"Possible values: alpha {conjunction} beta" (no comma) correctly returns null. Verified by hand: tokens.Length == 3 skips the o-bullet branch (>= 4 required), then the ambiguity check (tokens.Length > 2 && tokens.Any(...OrdinalIgnoreCase...)) now matches on any casing and returns [], which makes TryDetectEnum bail out (values.Length > 0 is false).
  • The comma-delimited cases stay correctly distinguished: "Possible values: AND, OR" and "Possible values: and, or" still retain the literal values (a comma clearly signals a real list, so standalone and/or members are legitimate), while "Possible values: alpha, AND beta" still strips the leading conjunction via the already-case-insensitive LeadingEnumConjunctionPattern/EnumConjunctionPattern regexes and keeps alpha|beta. So this fix only tightens the previously-inconsistent branch, without touching the already-correct comma-list logic.

This is a narrowly scoped, well-tested correctness fix consistent with the file's existing heuristic style, and it doesn't reopen or interact with any of the gaps the three prior reviews on this PR already validated (OptionEnumFactory's shared 2–20 policy, CommandCoverageGuard's subtree-absence exemption, GhCliScraper's live extension probe, OptionTypeEnhancer's stale-enum handling, or the ConfigureAwait(false) additions). I re-skimmed the rest of the cumulative diff for regressions and found none — no other file changed behavior beyond this commit.

No actionable correctness or design issues found.

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Codex Review: Didn't find any major issues. Breezy!

Reviewed commit: 7127a9d8be

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thomhurst deployed to Pull Requests September 14, 2026 17:04 — with GitHub Actions Active
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thomhurst force-pushed the issue-5117-shared-enum-source branch from 7127a9d to 1685273 Compare September 14, 2026 17:07
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Rebased onto main b91cb2b after #5116 merged. The only conflict was an equivalent local-variable rename in the GH coverage regression; main naming was retained. Remote head 1685273 passes the Release generator solution build (zero warnings/errors), all 1,161 scraper tests, and all 23 shared-enum/enhancement tests. Scoped default formatting and git diff --check pass. Existing broader validation limits remain unchanged. @codex review

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Codex Review: Didn't find any major issues. Keep them coming!

Reviewed commit: 1685273fe2

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Review

Reviewed the current head (1685273f), which is a much narrower rebase than what CodeRabbit's cached review saw (that review covered CommandCoverageGuard, CodeGeneratorOrchestrator, GhCliScraper, the workflow file, etc., none of which are in this diff).

Previously-flagged issue is fixed: CodeRabbit's actionable comment about AwsCliScraper.ParseEnumChoices treating "AND"/"OR" as valid enum tokens (only lowercase and/or were being rejected) is resolved here — token.Equals("and", StringComparison.OrdinalIgnoreCase) plus RegexOptions.IgnoreCase on LeadingEnumConjunctionPattern/EnumConjunctionPattern (AwsCliScraper.cs:536-538,685-689), and it's covered by Enum_Detection_Rejects_Ambiguous_Conjunctions_In_Any_Case.

Design assessment of the core change: Centralizing enum construction into OptionEnumFactory (TryCreate for already-validated/structured choices, TryCreateFromHint for lexically-inferred ones) is the right move — it replaces at least three near-duplicate implementations (CliScraperBase, CobraCliScraper, CliDocumentationScraperBase) that previously disagreed on member limits (16/20/30-char cutoffs), case-sensitivity, and description merging. The TryCreate/TryCreateFromHint split cleanly encodes the trust boundary: structured sources (already-parsed CLI metadata) skip the lexical delimiter/letter guard that inferred text hints need. Deterministic ordering via CliEnumDefinition.OrderValues before de-duplication (EnumGenerator.GetUniqueValues) is a nice touch — it makes which duplicate "wins" a member-name collision independent of the order a tool happened to print values in, which otherwise would have made regenerated output flap between runs.

OptionTypeEnhancer fallback behavior (OptionTypeEnhancer.cs:152-167): when the enhancement pipeline re-detects an enum but the shared factory rejects it (e.g., collapses to <2 or >20 distinct values), the code now sets effectiveEnumDef = null unconditionally rather than falling back to the option's pre-existing EnumDefinition, and instead appends the raw candidates to the description via PreserveChoices. That's a real behavior change from the old enumDef ?? option.EnumDefinition fallback, but it matches the stated intent ("option metadata is authoritative after enhancement... an old definition cannot shadow its replacement or fallback") and degrades safely to string? via CliTypeMapper.ToCSharpType's CliOptionType.Enum => "string?" branch — not a defect, just worth flagging since it's a deliberate precedence change over the pre-existing scraped enum.

Resilience wiring (OptionsGeneratorCommand.CreateTypeEnhancer / OptionTypeEnhancer.CreateDefault): moving the ResilientCliCommandExecutor wrap-once responsibility into CreateDefault and having the call site hand over the raw ProcessCliCommandExecutor avoids the double-wrapping that would otherwise stack two independent retry/circuit-breaker layers. Correctly done — each of CLI-first scraping and type-enhancement now gets its own circuit state instead of sharing (or nesting) one.

No correctness issues found in this diff. Test coverage (OptionEnumFactoryTests, updated AwsCliScraperTests/CobraCliScraperTests/CliDocumentationScraperBaseTests/DockerDocumentationScraperTests) exercises the member-limit boundaries (0/1/2/20/21), case-variant preservation, punctuation/leading-digit literals, wrapped/long values, and the conjunction ambiguity cases directly.

@thomhurst
thomhurst merged commit 8ea298f into main Sep 14, 2026
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thomhurst deleted the issue-5117-shared-enum-source branch September 14, 2026 17:28
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Post-merge CI cleanup verified. Cancelled pending current-head run 34872794580 and superseded run 34870280832; the latter required force-cancel after ordinary cancellation did not finish. A paginated branch-run query now shows no pending work. Main and unrelated runs were preserved. Parent #5009 remains open for authoritative generated output and integration verification.

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Land shared value-preserving enum generator before full regeneration

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