writeonce/docs/plan/oop-vm/README.md
shoney.arickathil 3b4372b913 feat(compiler): MVS ownership pass + woc driver; drop Money/SKU/Float, reject abstract
Completes plan 2 Tasks 7-8. owner.ml: mutable-value-semantics flow analysis
producing the four plan-3 emitter tables (moves, drops incl. LIVE-MASK for trap
unwinding, rc with elision, residual borrow sites) plus WO-E301-304 two-site
diagnostics. Alias questions run over canonicalized places, so a double-mut
reached through let-bound aliases lands in the residual table like the direct
form; dump.ml's contract notes the emitter must coalesce guards per operand.
main.ml: directory discovery, cross-file programs (symbols merge before bodies
check), diagnostics ordered by (file,line,col), new WO-E214 for a name declared
in two files. New docs/plan/oop-vm/01-error-catalog.md (14 emitted + 10 reserved
codes), un-ignored so both plan tracks can cite it; justfile regains woc-*.

builtin_scalars is now the five that work: Int, Bool, Text, Timestamp, Id.
Money/SKU/Float and the abstract_types allowlist are gone — `abstract` never
lexed, and Float had no literal syntax and no wob kind, so no value could exist.
Fixtures and samples retype Money->Int, SKU->Text. The abstract newtype feature
is rejected outright (verdict row adopt->reject); haxe-parity Task 7 keeps `is`.

nullable-types-implementation.md corrected: ?T is plumbed but UNENFORCED
(E211-213 declared, never emitted; probe exits 0), handed to haxe-parity Task 6
as next work item. Records all 10 dead codes incl. E205 — interface satisfaction
is unchecked. crates/rt keeps its Money/SKU fixtures (opaque strings, Stage 2).

Gate: build warning-clean, 14 + 264 checks 0 failures, pricing golden exit 0,
docs/examples histograms unchanged (13/70, zero WO-E225).
2026-08-10 21:24:50 +02:00

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Markdown

# docs/plan/oop-vm/ — OOP + systems track contracts
The normative contract documents both stacks cite. Landed by their named plan tasks:
| doc | contract | plan |
| --- | --- | --- |
| `00-wob-format.md` | `.wob` bytecode format (compiler↔VM) | 1 |
| `01-error-catalog.md` | every `WO-E###` code | 2, grows 3/8 |
| `02-corpus.md` | how to add conformance fixtures | 3 |
| `03-shard-actor.md` | shard ownership, mailboxes, send-as-move | 4 |
| `04-db-binding.md` | row format, WAL records, query subset | 5 |
| `05-http-service.md` | route section, trap→HTTP table, JSON subset | 6 |
| `06-ui-live.md` | delta frames, subscribe protocol, wo:live | 7 |
| `07-systems-stdlib.md` | per-function nil-vs-trap contracts | 9 |
Specs and plans: `docs/superpowers/{specs,plans}/`. Repo map: `docs/08-project-structure.md`.