b6e31cf8ca
Phase 184 implements the foundation for body-local variable support in update expressions, completing the three-box architecture: LoopBodyLocalEnv (storage), UpdateEnv (composition), and CarrierUpdateEmitter (emission). ## Implementation Summary ### Task 184-1: Design Document - Created phase184-body-local-mir-lowering.md - Two-Environment System design (ConditionEnv + LoopBodyLocalEnv) - Box-First design principles documented ### Task 184-2: LoopBodyLocalEnv Implementation - New file: src/mir/join_ir/lowering/loop_body_local_env.rs (216 lines) - Storage box for body-local variable name → ValueId mappings - BTreeMap for deterministic ordering (PHI consistency) - 7 unit tests: empty env, single/multiple locals, get/contains, iteration ### Task 184-3: UpdateEnv Implementation - New file: src/mir/join_ir/lowering/update_env.rs (237 lines) - Composition box for unified variable resolution - Priority order: ConditionEnv (condition vars) → LoopBodyLocalEnv (body-local) - 8 unit tests: priority, fallback, not found, combined lookup ### Task 184-4: CarrierUpdateEmitter Integration - Modified: src/mir/join_ir/lowering/carrier_update_emitter.rs - Added emit_carrier_update_with_env() (UpdateEnv version) - Kept emit_carrier_update() for backward compatibility - 4 new unit tests: body-local variable, priority, not found, const update - Total 10 tests PASS (6 existing + 4 new) ### Task 184-5: Representative Test Cases - apps/tests/phase184_body_local_update.hako (Pattern1 baseline) - apps/tests/phase184_body_local_with_break.hako (Pattern2, Phase 185 target) ### Task 184-6: Documentation Updates - Updated: docs/development/current/main/joinir-architecture-overview.md - Updated: CURRENT_TASK.md (Phase 184 completion record) ## Test Results All 25 unit tests PASS: - LoopBodyLocalEnv: 7 tests - UpdateEnv: 8 tests - CarrierUpdateEmitter: 10 tests (6 existing + 4 new) Build: ✅ Success (0 errors) ## Design Constraints Following 箱理論 (Box Theory) principles: - Single Responsibility: Each box has one clear purpose - Deterministic: BTreeMap ensures consistent ordering - Conservative: Pattern5 (Trim) integration deferred to Phase 185 - Fail-Fast: Explicit errors for unsupported patterns ## Scope Limitation Phase 184 provides the **infrastructure only**: - ✅ Storage box (LoopBodyLocalEnv) - ✅ Composition box (UpdateEnv) - ✅ Emission support (CarrierUpdateEmitter) - ❌ Pattern2/4 integration (requires body-local collection, Phase 185) ## Next Steps Phase 185: Pattern2/4 Integration - Integrate LoopBodyLocalEnv into Pattern2/4 lowerers - Add body-local variable collection from loop body AST - Enable full E2E body-local variable support in update expressions 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <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。