44b20bfe28
Phase 2-4 で移行漏れがあったファイルを修正。
## Changes
- Fixed all remaining compilation errors from incomplete Phase 2-4 migration
- Updated access sites to use scope_ctx.* for 7 legacy fields:
1. current_function → scope_ctx.current_function
2. lexical_scope_stack → scope_ctx.lexical_scope_stack
3. if_merge_stack → scope_ctx.if_merge_stack
4. debug_scope_stack → scope_ctx.debug_scope_stack
- Updated visibility of ScopeContext to pub(in crate::mir) for cross-module access
- Removed dual-write legacy code in lexical_scope.rs, builder.rs
- Updated documentation comments in phi_helpers.rs
## Files Modified (20 files)
Core access migration:
- src/mir/builder/method_call_handlers.rs
- src/mir/builder/control_flow/joinir/routing.rs
- src/mir/builder/control_flow/joinir/merge/loop_header_phi_builder.rs
- src/mir/builder/if_form.rs
- src/mir/builder/ops.rs (4 occurrences)
- src/mir/builder/observe/resolve.rs (2 occurrences)
- src/mir/builder/observe/ssa.rs
- src/mir/builder/receiver.rs
- src/mir/loop_api.rs (3 occurrences)
- src/mir/region/observer.rs (3 occurrences)
- src/mir/utils/control_flow.rs
- src/mir/utils/phi_helpers.rs (4 occurrences + docs)
Dual-write removal:
- src/mir/builder/vars/lexical_scope.rs (push/pop/declare)
- src/mir/builder.rs (if_merge, debug_scope, emit_instruction)
Visibility updates:
- src/mir/builder/scope_context.rs (struct + fields)
## Tests
- cargo build --release: SUCCESS (0 errors, 191 warnings)
- Phase 2-4 migration now fully complete
- Note: Test failures exist but are unrelated (Phase 2-5 binding_map issue)
Phase 2-4 now fully complete ✅
observe — Builder 観測（dev‑only/既定OFF）
目的
- Builder 内部の決定（resolve.try/choose, ssa.phi など）を JSONL で観測する。
- 環境変数で明示有効化された時のみ動作（既定OFF）。言語仕様・実行結果は不変。
責務
- ssa.rs:
emit_phi— PHI の決定（pred の type/origin、dst の決定）を DebugHub へ emit。 - resolve.rs:
emit_try/emit_choose— メソッド解決の候補/最終選択を emit。
非責務（禁止）
- MIR 命令の生成/変更は行わない（副作用なし）。
- 起源付与や型推論は origin 層に限定。
トグル（DebugHub 側でガード）
NYASH_DEBUG_ENABLE=1NYASH_DEBUG_KINDS=resolve,ssaNYASH_DEBUG_SINK=/path/to/file.jsonl
レイヤールール
- Allowed: DebugHub emit、Builder の読み取り（関数名/region_id/メタ）。
- Forbidden: rewrite/origin の機能をここに持ち込まない。