hakorune/CURRENT_TASK.md

Current Task — Phase 15 (Concise)

Focus

• JSON heavy smokes green (VM), stable method resolution.
• Instance→Function rewrite default ON (prod/dev/ci).
• NewBox→birth invariant enforced; eliminate BoxCall-on-Void crashes.

Decisions (Go)

1. VM stringify safety: stringify(Void) → "null" (dev safety valve; logs & metric)
2. Heavy probe strictness: compare last trimmed line to "ok"; else SKIP
3. Instance→Function rewrite: default ON (override NYASH_BUILDER_REWRITE_INSTANCE=0)
   • VM: user Instance BoxCall disallowed in prod; dev-only fallback with WARN
4. NewBox→birth invariant: Builder emits Global("Box.birth/N"); VM has no implicit birth
   • Dev assert: birth(me==Void) forbidden (WARN+metric)

Plan (next patches)

• Implement stringify(Void) guard in VM (handlers/boxes.rs)
• Tighten probes in quick/core json_* smokes (tail-trim-compare)
• Set rewrite default ON in Builder (method_call_handlers.rs)
• Add VM guard for user Instance BoxCall (prod error; dev fallback)
• (Optional) Builder verify for NewBox→birth, VM dev assert hook

Status

• Tokenizer/parse([]): PASS
• Nested/Roundtrip: probe SKIP on this env (expected); direct run OK
• json_query_min (core): still null → fix follows via stringify(Void) + invariant

Acceptance

• quick: json_pp/json_lint/json_query_min PASS; user Instance BoxCall hits=0
• heavy: nested/roundtrip PASS where parser available

References

• docs/design/instance-dispatch-and-birth.md
• tools/smokes/README.md (heavy probes)