Split android-reviewer review-rules.md into conditional rule files#11266
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jonathanpeppers wants to merge 6 commits intomainfrom
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Split android-reviewer review-rules.md into conditional rule files#11266jonathanpeppers wants to merge 6 commits intomainfrom
jonathanpeppers wants to merge 6 commits intomainfrom
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Split the monolithic review-rules.md (297 lines) into 8 focused files that the skill loads conditionally based on which file types changed in the PR: Always loaded: - repo-conventions.md: formatting, style, localization, repo patterns - ai-pitfalls.md: common AI-generated code mistakes Conditionally loaded: - csharp-rules.md: nullable, async, error handling, performance, code org - msbuild-rules.md: MSBuild task conventions and target/XML rules - native-rules.md: C/C++ memory, best practices, symbols, platform code - interop-rules.md: managed-native boundary (P/Invoke, JNI, marshalling) - testing-rules.md: test conventions and best practices - security-rules.md: zip slip, command injection, path traversal Updated SKILL.md step 5 to describe the conditional loading logic. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
…ile presence The previous heuristic loaded interop rules only when both C# and native files changed. This missed cases where a C#-only diff touches JNI/P/Invoke boundary code (e.g., DllImport, [Register], JNIEnv, [MarshalAs], [StructLayout]). Now triggers based on actual interop markers in the diff. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Cross-referenced with dotnet/android-tools#355 to align shared rules and adopt new relevant ones. New rules added (6): - ai-pitfalls: Confidently wrong domain facts - ai-pitfalls: Over-mocking - ai-pitfalls: Debug.WriteLine for logging - msbuild-rules: Use appropriate log levels (MessageImportance) - msbuild-rules: Don't redirect stdout/stderr without draining - msbuild-rules: Include stdout in error diagnostics Wording aligned with android-tools for sharing: - security: Zip Slip adds ZipFile.ExtractToDirectory() warning - security: Path traversal adds directory boundary example - security: Command injection adds "never interpolate" note - security: Reorganized into Archive & Process subsections - ai-pitfalls: Reinventing the wheel adds "hundreds of lines" emphasis - ai-pitfalls: Swallowed errors adds exit code checking - ai-pitfalls: Null-forgiving expanded with IsNullOrEmpty suggestion - ai-pitfalls: Unused parameters adds injection risk note - testing: Bug fixes uses generic "#N" placeholder - testing: Assertions adds NUnit constraint examples Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
This PR refactors the android-reviewer skill’s rule reference material by replacing the single monolithic review-rules.md with multiple focused rule files intended to be loaded conditionally based on what a PR changes.
Changes:
- Delete the legacy monolithic
references/review-rules.md. - Add 8 focused rule reference files (repo conventions, AI pitfalls, and per-area rule sets like C#, MSBuild, native, interop, testing, security).
- Update
SKILL.mdto describe the new always/conditional rule-loading behavior.
Reviewed changes
Copilot reviewed 10 out of 10 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| .github/skills/android-reviewer/SKILL.md | Updates step 5 to load the new split rule files (always + conditional sets). |
| .github/skills/android-reviewer/references/review-rules.md | Removes the legacy monolithic rule file. |
| .github/skills/android-reviewer/references/repo-conventions.md | Adds always-loaded repo-specific conventions (formatting/localization/patterns). |
| .github/skills/android-reviewer/references/ai-pitfalls.md | Adds always-loaded AI pitfall guidance. |
| .github/skills/android-reviewer/references/csharp-rules.md | Adds conditional C# rules (nullable/async/error handling/perf/organization). |
| .github/skills/android-reviewer/references/msbuild-rules.md | Adds conditional MSBuild rules (tasks/targets/process management). |
| .github/skills/android-reviewer/references/native-rules.md | Adds conditional native rules (memory/C++/visibility/platform). |
| .github/skills/android-reviewer/references/interop-rules.md | Adds conditional interop boundary rules (P/Invoke/JNI/shared structs). |
| .github/skills/android-reviewer/references/testing-rules.md | Adds conditional test guidance. |
| .github/skills/android-reviewer/references/security-rules.md | Adds conditional security checks (zip slip/path traversal/command injection). |
- android-reviewer.md: Remove reference to deleted review-rules.md, point to SKILL.md which handles rule file loading (step 5) - interop-rules.md: Align header load-condition wording with SKILL.md to mention interop markers (DllImport, [Register], etc.) Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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✅ LGTM
Well-structured refactoring that splits the monolithic 297-line review-rules.md into 8 focused files with conditional loading. Verified:
- 0 rules lost — All 150 original rules present across the 8 new files
- 6 new rules added — Domain facts, over-mocking, logging patterns, process management (matches PR description)
- 8 enhanced rules — Security rules (Zip Slip, path traversal, command injection) meaningfully improved with concrete examples and additional guidance
- SKILL.md updated correctly — Conditional loading instructions match the actual file set
- Postmortem references — All consistently backtick-wrapped (
#N) to prevent GitHub auto-linking - CI is green — All 6 checks passing
Positive callouts:
- The conditional loading strategy (21-33% savings per the evaluation) is a pragmatic way to reduce context for the AI reviewer without losing coverage
- Grouping security rules into "Archive & Path Safety" and "Process & Command Safety" subsections improves scannability
- Generalizing
#1234→#Nin testing-rules.md makes the rules portable across repos
1 suggestion filed inline about reducing duplication between always-loaded and conditionally-loaded null-forgiving operator rules.
Generated by Android PR Reviewer for issue #11266 · ● 11M
Keep ai-pitfalls.md concise with a cross-reference to csharp-rules.md for the full NRT details. Saves ~500 tokens of duplicate context since ai-pitfalls is always loaded and csharp-rules is loaded for most PRs. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
jonathanpeppers
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Split the monolithic
review-rules.md(297 lines, 150 rules) into 8 focused files that the skill loads conditionally based on which file types changed in the PR.Always loaded:
repo-conventions.md— formatting, style, localization, repo-specific patternsai-pitfalls.md— common AI-generated code mistakesConditionally loaded:
csharp-rules.md(46 rules) — nullable, async, error handling, performance, code organization — when.csfiles changedmsbuild-rules.md(20 rules) — MSBuild task conventions, process management, and target/XML rules — when.targets/.props/.csprojchangednative-rules.md(27 rules) — memory management, C++ best practices, symbol visibility, platform-specific code — when.c/.cpp/.h/.hppchangedinterop-rules.md(5 rules) — managed-native boundary (P/Invoke, JNI, marshalling) — when diff contains interop markers (DllImport,[Register],JNIEnv,[MarshalAs],[StructLayout])testing-rules.md(7 rules) — test conventions and best practices — whentests/or**/Tests/files changedsecurity-rules.md(3 rules) — zip slip, command injection, path traversal — when any code files changedDeep Audit
All 150 original rules verified preserved via word-for-word content comparison:
6 new rules (from cross-referencing with dotnet/android-tools#355)
Debug.WriteLinefor logging8 intentionally modified rules (aligned wording with android-tools)
ZipFile.ExtractToDirectory()warning#1234→#N(generalized for sharing)Does.Contain,Is.EqualTo)Evaluation
Tested the split against 3 real merged PRs with different file-type profiles:
Key findings:
DllImport,[Register]) rather than just file presence