9e3b258046
## Overview Analyzed 34 loops across selfhost codebase to identify JoinIR coverage gaps. Current readiness: 47% (16/30 loops). Next frontier: Pattern P5b (Escape Handling). ## Current Status - Phase 91 planning document: Complete - Loop inventory across 6 key files - Priority ranking: P5b (escape) > P5 (guard) > P6 (nested) - Effort estimates and ROI analysis - Pattern P5b Design: Complete - Problem statement (variable-step carriers) - Pattern definition with Skeleton layout - Recognition algorithm (8-step detection) - Capability taxonomy (P5b-specific guards) - Lowering strategy (Phase 92 preview) - Test fixture: Created - Minimal escape sequence parser - JSON string with backslash escape - Loop Canonicalizer extended - Capability table updated with P5b entries - Fail-Fast criteria documented - Implementation checklist added ## Key Findings ### Loop Readiness Matrix | Category | Count | JoinIR Status | |----------|-------|--------------| | Pattern 1 (simple bounded) | 16 | ✅ Ready | | Pattern 2 (with break) | 1 | ⚠️ Partial | | **Pattern P5b (escape seq)** | ~3 | ❌ NEW | | Pattern P5 (guard-bounded) | ~2 | ❌ Deferred | | Pattern P6 (nested loops) | ~8 | ❌ Deferred | ### Top Candidates 1. **P5b**: json_loader.hako:30 (8 lines, high reuse) - Effort: 2-3 days (recognition) - Impact: Unlocks all escape parsers 2. **P5**: mini_vm_core.hako:541 (204 lines, monolithic) - Effort: 1-2 weeks - Impact: Major JSON optimization 3. **P6**: seam_inspector.hako:76 (7+ nesting) - Effort: 2-3 weeks - Impact: Demonstrates nested composition ## Phase 91 Strategy **Recognition-only phase** (no lowering in P1): - Step 1: Design & planning ✅ - Step 2: Canonicalizer implementation (detect_escape_pattern) - Step 3: Unit tests + parity verification - Step 4: Lowering deferred to Phase 92 ## Files Added - docs/development/current/main/phases/phase-91/README.md - Full analysis & planning - docs/development/current/main/design/pattern-p5b-escape-design.md - Technical design - tools/selfhost/test_pattern5b_escape_minimal.hako - Test fixture ## Files Modified - docs/development/current/main/design/loop-canonicalizer.md - Capability table extended with P5b entries - Pattern P5b full section added - Implementation checklist updated ## Acceptance Criteria (Phase 91 Step 1) - ✅ Loop inventory complete (34 loops across 6 files) - ✅ Pattern P5b design document ready - ✅ Test fixture created - ✅ Capability taxonomy extended - ⏳ Implementation deferred (Step 2+) ## References - JoinIR Architecture: joinir-architecture-overview.md - Phase 91 Plan: phases/phase-91/README.md - P5b Design: design/pattern-p5b-escape-design.md Next: Implement detect_escape_pattern() recognition in Phase 91 Step 2 🤖 Generated with Claude Code Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
design/
docs/development/current/main/design/ は、長期参照する設計図（SSOT 寄り）を置く場所。
- 原則: “Phaseの作業ログ/完了報告” は
../phases/に置く。 - 原則: “不具合調査ログ” は
../investigations/に置く。
現役の設計図（入口）
- JoinIR の地図（navigation SSOT）:
docs/development/current/main/design/joinir-design-map.md - Loop Canonicalizer（設計 SSOT）:
docs/development/current/main/design/loop-canonicalizer.md