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docs(joinir): Phase 190 NumberAccumulation design (doc-only)
Design document for `result = result * 10 + digit` patterns:
- Section 1-2: Target loop analysis (_atoi, _parse_number)
- Section 3: UpdateKind::NumberAccumulation { base: i64 }
- Section 4: classify_number_update() algorithm
- Section 5: Pattern2/4 can_lower() specification
- Section 6: CarrierUpdateLowerer 2-instruction emission
- Section 7-12: Implementation roadmap, testing strategy
Key decisions:
- Safe: lhs = lhs * CONST + Variable/Const
- Unsafe: LHS 2+ occurrences, variable base, method calls
- Integer type only (no string)
- Fail-Fast for Complex patterns
Next: Phase 190-impl for code implementation
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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2025-12-09 01:54:53 +09:00 |
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