Code Reviewer

Automated code review tools for analyzing pull requests, detecting code quality issues, and generating review reports.

Table of Contents

• Tools
  • PR Analyzer
  • Code Quality Checker
  • Review Report Generator
• Reference Guides
• Languages Supported

Tools

PR Analyzer

Analyzes git diff between branches to assess review complexity and identify risks.

# Analyze current branch against main
python scripts/pr_analyzer.py /path/to/repo

# Compare specific branches
python scripts/pr_analyzer.py . --base main --head feature-branch

# JSON output for integration
python scripts/pr_analyzer.py /path/to/repo --json

What it detects:

• Hardcoded secrets (passwords, API keys, tokens)
• SQL injection patterns (string concatenation in queries)
• Debug statements (debugger, console.log)
• ESLint rule disabling
• TypeScript

  any

  types
• TODO/FIXME comments

Output includes:

• Complexity score (1-10)
• Risk categorization (critical, high, medium, low)
• File prioritization for review order
• Commit message validation

Code Quality Checker

Analyzes source code for structural issues, code smells, and SOLID violations.

# Analyze a directory
python scripts/code_quality_checker.py /path/to/code

# Analyze specific language
python scripts/code_quality_checker.py . --language python

# JSON output
python scripts/code_quality_checker.py /path/to/code --json

What it detects:

• Long functions (>50 lines)
• Large files (>500 lines)
• God classes (>20 methods)
• Deep nesting (>4 levels)
• Too many parameters (>5)
• High cyclomatic complexity
• Missing error handling
• Unused imports
• Magic numbers

Thresholds:

Review Report Generator

Combines PR analysis and code quality findings into structured review reports.

# Generate report for current repo
python scripts/review_report_generator.py /path/to/repo

# Markdown output
python scripts/review_report_generator.py . --format markdown --output review.md

# Use pre-computed analyses
python scripts/review_report_generator.py . \
  --pr-analysis pr_results.json \
  --quality-analysis quality_results.json

Report includes:

• Review verdict (approve, request changes, block)
• Score (0-100)
• Prioritized action items
• Issue summary by severity
• Suggested review order

Verdicts:

Reference Guides

Code Review Checklist

references/code_review_checklist.md

Systematic checklists covering:

• Pre-review checks (build, tests, PR hygiene)
• Correctness (logic, data handling, error handling)
• Security (input validation, injection prevention)
• Performance (efficiency, caching, scalability)
• Maintainability (code quality, naming, structure)
• Testing (coverage, quality, mocking)
• Language-specific checks

Coding Standards

references/coding_standards.md

Language-specific standards for:

• TypeScript (type annotations, null safety, async/await)
• JavaScript (declarations, patterns, modules)
• Python (type hints, exceptions, class design)
• Go (error handling, structs, concurrency)
• Swift (optionals, protocols, errors)
• Kotlin (null safety, data classes, coroutines)

Common Antipatterns

references/common_antipatterns.md

Antipattern catalog with examples and fixes:

• Structural (god class, long method, deep nesting)
• Logic (boolean blindness, stringly typed code)
• Security (SQL injection, hardcoded credentials)
• Performance (N+1 queries, unbounded collections)
• Testing (duplication, testing implementation)
• Async (floating promises, callback hell)

Languages Supported

.py

.ts

.tsx

.js

.jsx

.mjs

.go

.swift

.kt

.kts

Troubleshooting

Error: /path is not a git repository

.git

--base

--head

git branch -a

--base

--head

git diff

--language

.py

.ts

.tsx

.js

.jsx

.mjs

.go

.swift

.kt

.kts

--language

LANGUAGE_EXTENSIONS

(password|secret|api_key|token)\s*[=:]\s*['"][^'"]+['"]

feat:

fix:

commit_issues

Success Criteria

• Review turnaround under 4 hours: Automated pre-screening with PR Analyzer reduces manual triage time so reviewers focus on logic, not hygiene.
• Zero false-positive critical findings: Every critical-severity flag (hardcoded secrets, SQL injection) corresponds to a genuine risk requiring human verification.
• Code quality score above 80 on all merged PRs: Teams gate merges on the Quality Checker score, ensuring consistent baseline quality.
• 100% of PRs reviewed with a structured report: Every pull request gets a Review Report with verdict, score, and prioritized action items before merge.
• Commit message compliance above 95%: PR Analyzer commit validation drives adoption of conventional commit format across the team.
• Reduction in post-merge defects by 30%+: Systematic detection of code smells, SOLID violations, and risky patterns catches issues before they reach production.
• Review order adoption by reviewers: At least 80% of reviewers follow the suggested file priority order, ensuring security-sensitive files are inspected first.

Scope & Limitations

Covers:

• Static pattern-based risk detection in git diffs (secrets, SQL injection, debug statements, lint bypasses)
• Structural code quality analysis: function length, class size, cyclomatic complexity, parameter count, SOLID violations
• PR metadata assessment: file categorization by risk priority, commit message validation, complexity scoring
• Consolidated review reports with verdicts, scores, and prioritized action items across text, markdown, and JSON formats

Does NOT cover:

• Runtime or dynamic analysis -- use

  senior-qa

  for test execution and

  qa-browser-automation

  for end-to-end testing
• Security vulnerability scanning (CVE databases, dependency audits) -- use

  senior-security

  or

  senior-secops

  for SAST/DAST and supply chain analysis
• Performance profiling or benchmarking -- use

  senior-backend

  or

  senior-fullstack

  for performance optimization workflows
• Architecture-level review (system design, service boundaries, API contract validation) -- use

  senior-architect

  for architectural decision records and design review

Integration Points

senior-security

pr_analyzer.py --json

risks.critical[]

senior-qa

block

review_report_generator.py --json

summary.verdict

senior-architect

pr_analyzer.py

summary.complexity_score

senior-fullstack

code_quality_checker.py --json

code_quality_analyzer.py

tdd-guide

smells[]

senior-devops

review_report_generator.py --json

summary.score

Tool Reference

pr_analyzer.py

Purpose: Analyzes git diffs between branches to assess pull request complexity, detect risky patterns, prioritize files for review, and validate commit messages.

Usage:

python scripts/pr_analyzer.py [repo_path] [--base BASE] [--head HEAD] [--json] [--output FILE]

Flags:

repo_path

.

--base

-b

main

--head

-h

HEAD

--json

--output

-o

Example:

python scripts/pr_analyzer.py /path/to/repo --base main --head feature-branch --json

{
  "status": "analyzed",
  "summary": {
    "files_changed": 8,
    "total_additions": 142,
    "total_deletions": 37,
    "complexity_score": 4,
    "complexity_label": "Moderate",
    "commits": 3
  },
  "risks": {
    "critical": [],
    "high": [],
    "medium": [
      {"name": "console_log", "severity": "medium", "message": "Console statement found (remove for production)", "file": "src/api/handler.js", "count": 2}
    ],
    "low": []
  },
  "files": [ ... ],
  "commit_issues": [],
  "review_order": ["src/auth/middleware.ts", "src/api/handler.js", "..."]
}

Output Formats: Human-readable text report (default) or structured JSON (

--json

code_quality_checker.py

Purpose: Analyzes source files or directories for structural code quality issues, code smells (long functions, god classes, deep nesting, magic numbers, commented code), SOLID principle violations, and cyclomatic complexity.

Usage:

python scripts/code_quality_checker.py <path> [--recursive] [--language LANG] [--json] [--output FILE]

Flags:

path

--recursive

-r

true

--language

-l

python

typescript

javascript

go

swift

kotlin

--json

--output

-o

Example:

python scripts/code_quality_checker.py ./src --language typescript --json

{
  "directory": "/absolute/path/to/src",
  "files_analyzed": 12,
  "average_score": 82.5,
  "overall_grade": "B",
  "total_code_smells": 7,
  "total_solid_violations": 1,
  "files": [
    {
      "file": "src/service.ts",
      "language": "typescript",
      "metrics": {
        "lines": {"total": 320, "code": 260, "blank": 40, "comment": 20},
        "functions": 14,
        "classes": 2,
        "avg_complexity": 5.3
      },
      "quality_score": 78,
      "grade": "C",
      "smells": [
        {"type": "long_function", "severity": "medium", "message": "Function 'processOrder' has 68 lines (max: 50)", "location": "processOrder"}
      ],
      "solid_violations": [],
      "function_details": [ ... ],
      "class_details": [ ... ]
    }
  ]
}

Output Formats: Human-readable text report (default) or structured JSON (

--json

review_report_generator.py

Purpose: Generates comprehensive code review reports by combining PR analysis and code quality findings into a single structured report with verdict, score, prioritized action items, and suggested review order. Can run both sub-tools automatically or accept pre-computed JSON inputs.

Usage:

python scripts/review_report_generator.py [repo_path] [--pr-analysis FILE] [--quality-analysis FILE] [--format FORMAT] [--json] [--output FILE]

Flags:

repo_path

.

--pr-analysis

--quality-analysis

--format

-f

text

text

markdown

json

--json

--format json

--output

-o

Example:

python scripts/review_report_generator.py . --format markdown --output review.md

# Code Review Report

**Generated:** 2026-03-21T14:30:00
**Repository:** /path/to/repo

## Executive Summary

**Verdict:** ✅ APPROVE WITH SUGGESTIONS
**Score:** 82/100
**Rationale:** Minor improvements recommended

### Issue Summary

| Severity | Count |
|----------|-------|
| Critical | 0     |
| High     | 1     |
| Medium   | 3     |
| Low      | 2     |

## Action Items

1. 🟠 **[P1]** Break down function into smaller, focused units
2. 🟡 **[P2]** Remove or replace console statements with proper logging
...

Output Formats: Plain text (default), markdown (

--format markdown

--format json

--json

--pr-analysis

--quality-analysis

pr_analyzer.py

code_quality_checker.py