hakorune/docs/updates/phase2034-p1p2-sweep.md

Phase 20.34 — P1/P2 Sweep (JsonFrag/PatternUtil, loop_form using)

Status: Completed (2025-11-03)

Scope

• P1: Replace ad‑hoc JSON scans with JsonFragBox and unify reverse lookups via PatternUtilBox.
• P2: Remove include from loop_form lowers and rely on using only.

Changes

• JsonFragBox adoption
  • Use read_int_after(text, kv+8), read_bool_after(text, kv+8), read_string_after(text, k+5) consistently.
  • Locate keys with index_of_from(text, "\"key\":", pos).
• PatternUtilBox adoption
  • find_local_int_before(text, name, before_pos) and find_local_bool_before(...) for reverse lookups.
  • Optional: map_cmp for operator mapping (<, >, <=, >=, ==, != → Lt, Gt, ...).
• loop_form lowers
  • lower_loop_simple/count_param/sum_bc: remove include of loop_form; keep using selfhost.shared.mir.loopform as LoopFormBox.

Verification

• Internal lowers canaries: PASS (structure, value paths). Logical Var/Var lower (direct) is green.
• Emit→Core rc verification: use verify_mir_rc with HAKO_VERIFY_PRIMARY=hakovm while Core rc line is being normalized.
• Test runner fixes: guard unset prefile; JSON extraction via jq with leading noise stripping.

Policy

• Behavior invariant (fail‑fast). New toggles default OFF. Minimal, localized diffs only.

Next

• Continue registry migration for MirBuilder (toggle‑guarded).
• Migrate remaining non‑internal include sites in a separate PR.