docs: Phase 88-89 完了 + Phase 90 P0 追加
## CURRENT_TASK.md - Phase 88-89 完了を反映 - Phase 90 P0 追加(_parse_string 合成 fixture) - P1/P2 候補を Phase 91/92 に繰り上げ - 最終更新: 2025-12-14 ## 10-Now.md - Phase 88 到達点を追記(continue + 可変ステップ) - Phase 89 P0/P1 到達点を追記(ContinueReturn detector + lowering) - 未検証の断定は書かない(dev-only fixture で固定、と明記) Impact: - 正確な進捗記録 - Phase 90 の明確な方針(fixture → detector → lowering) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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**Reference**: phase87-selfhost-llvm-exe-line.md
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### Phase 89 P0: Continue + Early Return Pattern (2025-12-14) 🚧
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### Phase 88: Continue + 可変ステップ (2025-12-14) ✅
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**Status**: IN PROGRESS - Dev-only fixture isolation
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**Status**: COMPLETE - dev-only fixture 固定完了
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**Goal**:
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- Establish new control axis: Continue + Early Return (loop-internal return)
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- Prevent Pattern4 detector false positives (canonical mismatch)
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- Maintain default behavior (normalized_dev scope only)
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**Achievements**:
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- continue + 可変ステップ(i=i+const 差分加算)を dev-only fixture で固定
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- continue 分岐側での acc 更新を許可
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- Fail-Fast 仕様固定(非 const の i 更新を拒否)
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- StepCalculator Box 抽出(+6 unit tests、再利用可能な純関数設計)
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- エラーメッセージ詳細化(Expected/Found/Hint 形式)
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**Step 0 COMPLETE** (2025-12-14):
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- ✅ Pattern4 detector tightened (require Select + exactly 1 conditional Jump)
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- ✅ Test added: `test_pattern4_detector_rejects_loop_with_return`
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- ✅ All existing Pattern4 tests pass
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**Impact**:
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- Tests: 993 lib tests PASS, 60 normalized_dev tests PASS
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- 箱化スコア: 9/10(Phase 33 Box 理論の模範実装)
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- コード削減: 5%(321→305行、重複ロジック削除)
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**Next Steps**:
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- P0-1: Documentation (10-Now.md, CURRENT_TASK.md)
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- P0-2: Minimal fixture (continue + early return, deterministic output)
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- P0-3: Frontend pattern (LoopPattern::ContinueReturn enum + lowering box)
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- P0-4: Normalized-dev integration (shape + normalize function)
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- P0-5: Acceptance tests (structured vs vm-bridge parity + expected output)
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**Reference**:
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- continue_pattern.rs, step_calculator.rs
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- jsonparser_unescape_string_step2_min.program.json
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**Constraints**:
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- ❌ No default behavior changes
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- ❌ No by-name branching
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- ❌ No fallback processing (Fail-Fast)
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- ❌ Not added to canonical shapes initially (dev-only first)
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### Phase 89 P0: Continue + Early Return Pattern Detector (2025-12-14) ✅
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**Reference**: (TBD - phase89-continue-return-pattern.md)
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**Status**: COMPLETE - Dev-only detector 確立完了
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**Achievements**:
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- Pattern4 detector 締め(Select 必須 + conditional Jump exactly 1)
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- LoopPattern::ContinueReturn enum 追加
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- NormalizedDevShape::PatternContinueReturnMinimal 追加(detector: Select + conditional Jumps >= 2)
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- Fail-Fast: UnimplementedPattern error(フォールバックなし)
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- canonical には入れない(dev-only、誤爆防止)
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**Impact**:
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- Pattern4 誤爆防止(continue+return を正しく区別)
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- Tests: 987 lib tests PASS
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**Reference**:
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- shape_guard.rs, loop_patterns/mod.rs, analysis.rs
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- pattern_continue_return_min.program.json (fixture)
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### Phase 89 P1: ContinueReturn Lowering Implementation (2025-12-14) ✅
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**Status**: COMPLETE - 独立箱実装完了
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**Achievements**:
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- continue_return_pattern.rs 実装(457行、StepCalculator 再利用)
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- Continue + Early Return の JoinIR lowering(loop 内 return 対応)
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- Fail-Fast 原則徹底(5箇所検証)
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- fixtures.rs に build_pattern_continue_return_min 追加
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- normalized_dev tests +2(vm_bridge + 期待値 n=10→acc=4)
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**Impact**:
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- Tests: 993 lib tests PASS, 61 normalized_dev tests PASS (+2)
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- 箱化原則:単一責任・境界明確・再利用性高
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**Reference**:
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- continue_return_pattern.rs, fixtures.rs
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- tests/normalized_joinir_min/shapes.rs
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### Scope / BindingId(dev-only の段階移行ライン)
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