shoney.arickathil
79605cbb4f
- `woc` now emits `.wob` that `wovm` runs: emit.ml lowers the typed, owner-annotated AST (scope-stack registers with a >64 WO-E401 diagnostic, Lua-style call windows, ICALL by slot, dedup const pool, drop maps, line tables, implicit terminators); disasm.ml backs `--dump-bc` goldens. - Ownership lowering consumes the four owner tables verbatim; RESIDUAL is the only source of borrow ops, coalesced per operand. Review caught the emitter consuming only 2 of owner.ml's 4 residual producers — an assignment-anchored aliasing violation ran to exit 0 instead of trapping; fixed, plus a backstop raising WO-E404 for any residual region left unconsumed. - Conformance harness `scripts/oop-e2e.sh` (`just oop-e2e`): four fixture kinds with exact outcomes — byte-exact stdout, one WO-E### anchored on `error CODE:`, numeric trap code, gc trace. 25 fixtures incl. pricing-demo logic, the ownership suite, and DB_STUB's parse-but-trap. `tests/` un-ignored so the corpus is actually tracked. - `woc build` produces a self-contained binary: wovm copy + appended image + 20-byte trailer, self-exec via /proc/self/exe. Verified relocated outside the repo, argless, and against adversarial trailer corruption. - Milestone 1's five spec criteria all MET (`just oop-accept`). Criterion 3 closed by WO-E405 — the entry must return `Int`, since program mode already says its return value is the exit code — which deletes the leak class without adding return-type metadata to the format. `gc/held-cycle` retired: an externally-held cycle is not expressible in a post-exit pump. - New spec: inferred GC + incremental per-shard tri-color mark-sweep, retiring `@gc` and reference counting. Story gains iterations 7b (that work) and 9b (`@table`, relations, compiler-checked query); `.dev/reference` gains a sparse System.Linq checkout. Priority: 5→6→7 (log-watcher) then 7b, 8, 9, 9b.
101 lines
6.8 KiB
Markdown
101 lines
6.8 KiB
Markdown
# Story — one language, one runtime, one database, one binary
|
||
|
||
> Format: `product/story-template` (tech-unit standard artifact).
|
||
> Sources consulted: `tech-unit/framework`, `product/story-template`, `product/story-iteration-template`.
|
||
|
||
**AS** a developer building and operating my own products end to end
|
||
|
||
**I WANT** a new programming language — with arithmetic, ownership-based memory safety, and garbage collection applied automatically wherever ownership alone cannot express the shape — whose compiler, runtime, and database ship as a single never-stopping Linux binary that can update its own code in place
|
||
|
||
**TO** write an application once and run it forever: no external stack to assemble, no database server to operate, and deployments that swap code inside the running process with instant rollback.
|
||
|
||
## User Value
|
||
|
||
- One artifact is the whole system: the language's runtime owns the data,
|
||
serves the API, and carries its own source — the "which commit is prod
|
||
running?" class of questions disappears.
|
||
- Memory safety without a GC tax: Rust-shaped borrowing (single owner,
|
||
second-class borrows) checked mostly at compile time, and where ownership
|
||
cannot express the shape the compiler decides — no annotation to write, and
|
||
collection stays per-shard so no global pause exists by construction
|
||
(iteration 7b; iterations 1–7 shipped a per-class `@gc` opt-in instead).
|
||
- Updates are blue-green **inside** the runtime: propose, approve, compile
|
||
in-process, atomic switch, previous version resident for instant rollback.
|
||
- The runtime is a recipe box: once language + runtime + database exist, a
|
||
web framework arrives as a `.wo` library composing runtime capabilities —
|
||
the recorded next story.
|
||
|
||
## Background & Constraints
|
||
|
||
writeonce today is a declarative Rust-based runtime (Stage 2). This story
|
||
evolves it into an object-oriented language (`woc` OCaml compiler, `wovm` C
|
||
VM) per the approved specs: C as the runtime's basis (libc only), no
|
||
inheritance ever, mutable value semantics for borrowing, shard-per-core
|
||
concurrency with ownership-moving messages, RAM-authoritative data under a
|
||
WAL, and the blue-green VM pair for in-runtime deployment. Target OS is
|
||
Linux; kernel primitives are the framework. The Rust runtime retires only at
|
||
parity. Constraints: OCaml stdlib only, C libc only; docs live under
|
||
`docs/`; prose-only planning artifacts (no implementation code in stories or
|
||
iterations); no commits by agents — drafts go to `.dev/commit.md`.
|
||
|
||
## Iterations (review in this order)
|
||
|
||
| # | Iteration | Delivers |
|
||
| --- | --- | --- |
|
||
| 1 | [Principles doc](01-principles-doc.md) | `docs/00-principles.md` — the doctrine page every later slice links back to |
|
||
| 2 | [VM core](02-vm-core.md) | `wovm`: `.wob` loader, register interpreter, arena, borrow word, `@gc` collector |
|
||
| 3 | [Compiler front](03-compiler-front.md) | `woc`: lexer → parser → typechecker → ownership pass, diagnostics |
|
||
| 4 | [Single binary end-to-end](04-single-binary-e2e.md) | emitter + conformance corpus + `woc build` self-contained binary |
|
||
| 5 | [Language surface](05-language-surface.md) | Haxe-parity adoptions: switch, records, optionals, try/catch, statics, modules… |
|
||
| 6 | [Program mode + stdlib](06-program-mode-stdlib.md) | `fn main`, exit codes, `fs`/`proc`/`net`/`time`/`json` builtins |
|
||
| 7 | [log-watcher proof](07-logwatcher-proof.md) | the driving workload compiled and detecting silent deaths live |
|
||
| 7b | [Inferred GC + mark-sweep](07b-inferred-gc-mark-sweep.md) | `@gc` removed from the language; compiler infers GC-ness; RC replaced by incremental per-shard tri-color mark-sweep |
|
||
| 8 | [Shard-actor runtime](08-shard-actor-runtime.md) | thread-per-core shards, per-shard heaps, ownership-move messaging |
|
||
| 9 | [Database engine](09-database-engine.md) | class-shaped tables, typed WAL + recovery, `insert`/`select` execute |
|
||
| 9b | [`@table`, relations, query](09b-table-relations-query.md) | `@table` becomes real storage; typed `ref`/`backlink`/`multi` relations; compiler-checked LINQ-shaped queries lowered to engine ops |
|
||
| 10 | [HTTP service layer](10-http-service.md) | `service` blocks route to VM methods; REST parity with Stage 2 |
|
||
| 11 | [Fibers](11-fibers.md) | green threads on the shard scheduler: reduction-budget preemption, park on I/O |
|
||
| 12 | [Blue-green deploy](12-blue-green-deploy.md) | two VM slots, in-runtime compile, atomic switch, resident rollback |
|
||
|
||
Review protocol: the developer reads one iteration, approves or amends;
|
||
the next starts only after approval. Each iteration is an unsplittable
|
||
value slice with its own acceptance criteria (Given/When/Then), out-of-scope
|
||
list, and a pointer to the plan document that already sequences its tasks.
|
||
|
||
## Related Links
|
||
|
||
- OOP core spec: `docs/superpowers/specs/2026-08-01-oop-compiler-vm-design.md`
|
||
- Systems track spec: `docs/superpowers/specs/2026-08-01-systems-track-design.md`
|
||
- Blue-green spec: `docs/superpowers/specs/2026-08-03-blue-green-vm-design.md`
|
||
- Sample+principles spec: `docs/superpowers/specs/2026-08-07-logwatcher-sample-and-principles-design.md`
|
||
- Plan documents: `docs/superpowers/plans/` (plans 1–10), `compiler/plan/` (2, 3, 8 + architecture)
|
||
- Roadmap map: `docs/08-project-structure.md` (build sequence)
|
||
- Behavioral reference workload: `~/projects/log-watcher` (Haxe daemon)
|
||
|
||
## Notes
|
||
|
||
- Acceptance criteria live in each iteration file; this story frames the
|
||
outcome.
|
||
- **Critical path (locked 2026-08-08): compile and run log-watcher.**
|
||
Iterations 3 → 4 → 5 → 6 → 7 are the committed line; nothing off that
|
||
line lands before iteration 7's acceptance. Then 7b, then 8–12 (with 9b after the database engine).
|
||
- **Iteration 7b (inserted 2026-08-11)** sits after the critical path
|
||
deliberately: it delays nothing on the log-watcher line, and it must precede
|
||
iteration 8 because the collector should be settled before shards multiply.
|
||
It also closes iteration 4's one open gate clause and supersedes part of
|
||
iteration 2's memory model — neither is renumbered; both point here.
|
||
- **Future iterations, after iteration 11** (parked 2026-08-08 — recorded,
|
||
not scheduled):
|
||
- ~~WO-W201 `@gc`-suggestion diagnostic refinement~~ — **superseded by
|
||
iteration 7b**: the diagnostic is retired outright, because inference
|
||
replaces the suggestion it existed to make.
|
||
- WO-E225 unknown-type validation broadened to `ref`/`multi`/`map`
|
||
element types and method/fn signatures.
|
||
- ADT container roster adoption (Stack, Queue, Set, Tree, Graph, … —
|
||
see the roster section in
|
||
`docs/plan/compiler/nullable-types-implementation.md`); log-watcher
|
||
needs only `multi`/`map`, so no ADT lands before iteration 7.
|
||
- Recorded future stories, deliberately outside this one: the web framework
|
||
as a `.wo` library over the recipe-box runtime; UI (`##ui` SSR + live
|
||
patches); script-based destructive schema migrations; MCP/agent wrapper
|
||
over the management plane.
|