803a603e69
Completes Phase 217: Validates Pattern 3 multi-carrier if-sum support with **ZERO additional code** - Phase 195/214/215 boxes compose perfectly. ## The Surprise Expected: Modify lowerers for multi-carrier support Actual: Everything just works out-of-the-box! 🎉 ## Test Results (All Passing) ### Primary Target - phase217_if_sum_multi_min.hako: RC=2 ✅ - Carriers: sum + count (2 accumulators) - Loop: i=0..2, both increment when i>0 - Returns sum=2 ### Regression Tests - loop_if_phi.hako (P3, 1 carrier): RC=2 ✅ - phase212_if_sum_min.hako (P3, 1 carrier): RC=2 ✅ - loop_min_while.hako (P1): RC=2 ✅ ## Why It Just Worked Box composition from previous phases: **Phase 195 (Multi-Carrier PHI Box)**: - CarrierInfo tracks N carriers automatically - Exit PHI generation handles arbitrary count - ExitLineReconnector updates variable_map for all **Phase 214 (Dynamic Inputs Box)**: - Removed hardcoded 3-input assumption - `join_inputs = (0..total_inputs).map(ValueId)` - Auto-scales: 1 loop_var + N carriers = N+1 inputs **Phase 215 (ExprResult Contract Box)**: - Marks first carrier as expr_result - Propagates through Boundary → ExitLine → Return - Works regardless of carrier count Result: Boxes A + B + C = Multi-carrier support (no glue code!) ## Architecture Verification Dynamic scaling confirmed: ```rust // Automatic for 2 carriers (sum, count) total_inputs = 1 + 2 = 3 join_inputs = [ValueId(0), ValueId(1), ValueId(2)] host_inputs = [loop_var_id, sum_binding, count_binding] ``` Exit PHI generation: ``` Loop Header: %i_phi = phi [0, entry], [%i_next, back] %sum_phi = phi [0, entry], [%sum_exit, back] ← Carrier 1 %count_phi = phi [0, entry], [%count_exit, back] ← Carrier 2 ``` ## Box Theory Validation **「箱理論」の勝利！** Well-designed boxes compose without modification: - Each box has single responsibility - Clear contracts between boxes - No tight coupling - New capabilities emerge from composition Phase 217 proves this philosophy works in practice. ## Documentation - Added: docs/development/current/main/phase217-if-sum-multi.md - Added: apps/tests/phase217_if_sum_multi_min.hako (test case) - Updated: CURRENT_TASK.md (Phase 217 complete status) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 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。