2025-12-25 14:01:32 +09:00
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# Phase 288: REPL mode (design-first, file-mode unaffected)
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Status: ✅ P0–P3 complete (2025-12-25) / ⏳ 288.1 next
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Goal: Add an interactive REPL for Nyash while keeping file mode semantics unchanged and keeping the language SSOT stable.
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SSOT:
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- REPL spec: `docs/reference/language/repl.md`
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## Scope
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- CLI entry: `hakorune --repl` / `-i`
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- REPL commands: `.help`, `.exit/.quit`, `.reset`
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- Fail-Fast: undefined reads are errors
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- File mode: no behavior changes (quick smokes remain green)
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## Completed (P0–P3)
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2025-12-25 14:21:22 +09:00
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- ✅ **P0 (docs)**: REPL SSOT 確立 — file mode vs REPL mode 意味論、VMValue 永続化方針 (`docs/reference/language/repl.md` 336行)
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- ✅ **P1 (CLI)**: `--repl` / `-i` 起動、.help/.exit/.reset コマンド、REPL ループ実装
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- ✅ **P2 (state)**: `ReplSessionBox` (VMValue ベース) 実装、暗黙 local 許可（file mode 不変、ValueId 永続化回避）
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- ✅ **P3 (UX)**: print() 出力表示、Main box wrapper（VM entry point 修正）、.reset 実装
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- ✅ **Box化**: `src/runner/repl/` モジュール分離（ReplRunnerBox）、runner/mod.rs -118行 (commit: 3445ef7a7)
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2025-12-25 14:01:32 +09:00
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## Next (Phase 288.1)
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The MVP intentionally deferred these:
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- Session variable **persistence across lines** (bridge session → compilation/runtime)
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- Expression auto-display + `_` last-value binding
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- Multi-line input handling (continuations)
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Entry: `docs/development/current/main/phases/phase-288/P1-INSTRUCTIONS.md`
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