Polyglot Coding Standards Analyzer

Purpose & When-To-Use

Trigger conditions:

• Reviewing code quality before merge/commit
• Establishing baseline standards for multi-language codebases
• Training developers on language-agnostic and language-specific best practices
• Automated code review workflows requiring consistent quality gates

Not for:

• Runtime debugging or performance profiling
• Vulnerability scanning (use dedicated security tools)
• Complete rewrite automation (provides suggestions only)

Pre-Checks

Time normalization:

• Compute NOW_ET using NIST/time.gov semantics (America/New_York, ISO-8601)
• Use NOW_ET for all citation access dates

Input validation:

• code_path must exist and be readable
• language must be one of: go, javascript, kotlin, python, rust, shell, swift, typescript, or null (auto-detect)
• ruleset must be: "universal", "language-specific", or "both"
• severity_threshold must be: "error", "warning", or "info"

Source freshness:

• Style guide links must be accessible (HTTP 200)
• If language-specific rules reference versioned specs, verify version matches target language version

Procedure

T1: Universal Principles (≤2k tokens)

Fast path for common cases:

1. Language Detection (if not provided)

   • Use file extension and shebang analysis
   • Fallback to syntax pattern matching

2. Universal Rules Application

   • DRY (Don't Repeat Yourself): Flag duplicate code blocks >5 lines
   • SOLID Principles: Detect single-responsibility violations (functions >50 lines)
   • Naming Conventions: Check snake_case, camelCase, PascalCase per language norms
   • Magic Numbers: Identify hardcoded constants without explanation
   • Documentation: Require docstrings/comments for public APIs

3. Quick Score

   • Calculate preliminary score: 100 - (errors×10 + warnings×3 + info×1)

Decision: If ruleset == "universal" → STOP at T1; otherwise proceed to T2.

T2: Language-Specific Rules (≤6k tokens)

Extended validation with style guides:

1. Route to Language Module (see resources/language-rules.json)

   • Python: PEP 8 compliance (line length ≤79, import order, naming) accessed 2025-10-25T21:30:36-04:00
   • Go: Effective Go patterns (error handling, receiver names, package comments) accessed 2025-10-25T21:30:36-04:00
   • JavaScript/TypeScript: Airbnb style (const/let, arrow functions, template literals) accessed 2025-10-25T21:30:36-04:00
   • Kotlin: Official conventions (property declarations, lambda syntax) accessed 2025-10-25T21:30:36-04:00
   • Rust: API guidelines (method naming, trait bounds, error types) accessed 2025-10-25T21:30:36-04:00
   • Swift: Google Swift style (access control, guard clauses) accessed 2025-10-25T21:30:36-04:00
   • Shell: Google Shell guide (quoting, function names, error handling) accessed 2025-10-25T21:30:36-04:00

2. Automated Fix Generation

   • Provide diff-ready patches for mechanical issues (formatting, imports)
   • Surface manual-review items for logic/architecture changes

3. Final Scoring

   • Adjust score based on language-specific violations
   • Apply severity weights: critical=15, error=10, warning=3, info=1
   • Cap score at 0 (minimum)

T3: Deep Dive (not implemented in v1.0.0)

Reserved for:

• Cross-file dependency analysis
• Architecture pattern validation
• Performance anti-pattern detection

Decision Rules

Language Detection Confidence:

• If confidence <80%, return error requesting explicit language parameter

Abort Conditions:

• code_path not readable → error "File/directory not accessible"
• Unsupported language → error "Language not in supported set"
• Parse failure (syntax errors) → return partial results with "unparseable code" warning

Severity Filtering:

• Only include issues at or above severity_threshold in final report
• Always compute full score regardless of threshold (for metrics consistency)

Ambiguity Handling:

• Mixed-language directories: analyze per-file, aggregate scores
• Conflicting rules (e.g., line length): prefer language-specific over universal

Output Contract

Schema (JSON):

{
  "code_path": "string",
  "language": "string",
  "score": "integer (0-100)",
  "issues": [
    {
      "file": "string",
      "line": "integer",
      "column": "integer (optional)",
      "severity": "error | warning | info",
      "rule": "string (e.g., 'PEP8-E501')",
      "message": "string",
      "fix": "string (optional, diff or instruction)"
    }
  ],
  "metrics": {
    "total_lines": "integer",
    "error_count": "integer",
    "warning_count": "integer",
    "info_count": "integer"
  },
  "timestamp": "ISO-8601 string (NOW_ET)"
}

Required Fields:

• code_path, language, score, issues, metrics, timestamp

Fix Suggestions (Markdown):

• Grouped by severity
• Max 5 suggestions per severity level (prioritize high-impact fixes)
• Include code snippets and references to style guides

Examples

Example 1: Python PEP 8 Analysis

INPUT: {code_path: "src/calc.py", language: "python", ruleset: "both"}

T1 (Universal):
- ✗ Function exceeds 50 lines (42-105)
- ✗ Magic number: 86400 (line 57)
- ✗ Missing docstrings: 4 functions

T2 (PEP 8):
- ✗ E501: Line too long (12 instances)
- ✗ N806: Variable 'X' should be lowercase

OUTPUT:
{
  "score": 68,
  "issues": [{
    "line": 57,
    "rule": "UNIVERSAL-MAGIC",
    "message": "Magic number 86400",
    "fix": "SECONDS_PER_DAY = 86400"
  }],
  "metrics": {"warnings": 17}
}

Quality Gates

Token Budgets:

• T1: ≤2k tokens (language detection + universal rules)
• T2: ≤6k tokens (language-specific analysis + fix generation)

Safety:

• No code execution; static analysis only
• Sandbox file reads (no writes without explicit user consent)
• Redact any accidentally detected secrets before output

Auditability:

• Log all rule applications with source citations
• Include style guide versions in output metadata
• Emit deterministic results (same input → same output)

Performance:

• T1 response time: <2 seconds for files ≤1000 lines
• T2 response time: <5 seconds for files ≤1000 lines
• Fail fast on files >10,000 lines (recommend splitting)

Resources

Language-Specific Rule Mappings:

• /resources/language-rules.json - Complete rule ID to description mappings

Official Style Guides (accessed 2025-10-25T21:30:36-04:00):

1. Google Style Guides (multi-language)
2. Kotlin Coding Conventions
3. Effective Go
4. PEP 8 – Style Guide for Python Code
5. Rust API Guidelines
6. Airbnb JavaScript Style Guide

Community Standards:

• Swift.org API Design Guidelines
• ShellCheck Wiki

Tool Integration Guides:

• ESLint, Pylint, golangci-lint, ktlint, Clippy configuration templates in resources/tool-configs/