000335c32e
Implements block-level unreachable code detection using MIR CFG information. Complements Phase 153's method-level HC019 with fine-grained analysis. Core Infrastructure (Complete): - CFG Extractor: Extract block reachability from MirModule - DeadBlockAnalyzerBox: HC020 rule for unreachable blocks - CLI Integration: --dead-blocks flag and rule execution - Test Cases: 4 comprehensive patterns (early return, constant false, infinite loop, break) - Smoke Test: Validation script for all test cases Implementation Details: - src/mir/cfg_extractor.rs: New module for CFG→JSON extraction - tools/hako_check/rules/rule_dead_blocks.hako: HC020 analyzer box - tools/hako_check/cli.hako: Added --dead-blocks flag and HC020 integration - apps/tests/hako_check/test_dead_blocks_*.hako: 4 test cases Architecture: - Follows Phase 153 boxed modular pattern (DeadCodeAnalyzerBox) - Optional CFG field in Analysis IR (backward compatible) - Uses MIR's built-in reachability computation - Gracefully skips if CFG unavailable Known Limitation: - CFG data bridge pending (Phase 155): analysis_consumer.hako needs MIR access - Current: DeadBlockAnalyzerBox implemented, but CFG not yet in Analysis IR - Estimated 2-3 hours to complete bridge in Phase 155 Test Coverage: - Unit tests: cfg_extractor (simple CFG, unreachable blocks) - Integration tests: 4 test cases ready (will activate with bridge) - Smoke test: tools/hako_check_deadblocks_smoke.sh Documentation: - phase154_mir_cfg_inventory.md: CFG structure investigation - phase154_implementation_summary.md: Complete implementation guide - hako_check_design.md: HC020 rule documentation Next Phase 155: - Implement CFG data bridge (extract_mir_cfg builtin) - Update analysis_consumer.hako to call bridge - Activate HC020 end-to-end testing 🤖 Generated with Claude Code (https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Nyash Development Documentation 🔧
開発者向けの進行中タスクと開発計画ドキュメントです。
📂 ディレクトリ構造
current/
CURRENT_TASK.md- 現在進行中のタスク- アクティブな開発作業の詳細
- 最新の実装状況
roadmap/
- phases/ - フェーズ別開発計画
- phase-8/ - AST→MIR変換
- phase-9/ - VM/JIT実装
- phase-10/ - AOT最適化
- native-plan/ - ネイティブビルド計画
- 実行バックエンド統合
- パフォーマンス目標
proposals/
- RFC（Request for Comments）
- 新機能提案
- 設計ディスカッション
🎯 重要な参照先
- 進行状況:
current/CURRENT_TASK.md - 開発計画:
roadmap/phases/ - 技術提案:
proposals/
📝 注意事項
このディレクトリの内容は開発中であり、頻繁に変更されます。
安定した仕様はreference/を参照してください。