6a05243f10
Phase 65-2-B 完了：P3-B（Box コンストラクタ）型ヒント実装
## 実装内容
### 1. JoinInst::NewBox に type_hint 追加
- `src/mir/join_ir/mod.rs`: `type_hint: Option<MirType>` フィールド追加
- 段階的拡大のため Optional 設計（既存コード破壊なし）
### 2. expr.rs で型ヒント自動推論
- `infer_box_type()` 関数使用で Box 名から型を自動推論
- ArrayBox → Box("ArrayBox")
- StringBox → String
- MapBox → Box("MapBox")
- IntegerBox → Integer
- BoolBox → Bool
### 3. convert.rs/json.rs で型ヒント対応
- パターンマッチに type_hint 追加（Phase 65-3 で活用予定）
- JSON シリアライズ対応
## テスト結果
- ✅ type_inference モジュール: 8/8 PASS
- ✅ ビルド: 0 エラー
## 次のステップ
- Phase 65-3: lifecycle.rs で P3-A/P3-B 型ヒント統合
---
🌟 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
JoinIR → VM bridge layer
Responsibilities:
- Convert normalized JoinIR modules into MIR for the Rust VM without changing semantics.
- Provide a thin runner helper that executes a JoinIR entry via the VM.
- Host experimental metadata-aware paths (Phase 40-1) behind clearly marked helpers.
Boundaries:
- No new control-flow semantics or heuristics here; this layer only maps structures already normalized by JoinIR.
- Keep type information minimal (MirType::Unknown) and avoid adding inference or guessing.
- Debug/diagnostic output must stay behind
NYASH_JOINIR_VM_BRIDGE_DEBUG=1.
File layout:
mod.rs: public surface + shared helpers (naming, error, logging)convert.rs: JoinIR→MIR lowering (functions/blocks/instructions)runner.rs: VM execution entry (run_joinir_via_vm)meta.rs: experimental metadata-aware conversion hookstests.rs: bridge-specific unit tests (kept local to avoid cross-layer leakage)