shoney.arickathil
641a41e25c
- `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
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> Format: fiberloom `product/story-template` (tech-unit standard artifact).
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> Sources consulted: fiberloom `tech-unit/framework`, `product/story-template`, `product/story-iteration-template`.
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**AS** a developer building and operating my own products end to end
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**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
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**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.
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## User Value
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- One artifact is the whole system: the language's runtime owns the data,
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serves the API, and carries its own source — the "which commit is prod
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running?" class of questions disappears.
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- Memory safety without a GC tax: Rust-shaped borrowing (single owner,
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second-class borrows) checked mostly at compile time, and where ownership
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cannot express the shape the compiler decides — no annotation to write, and
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collection stays per-shard so no global pause exists by construction
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(iteration 7b; iterations 1–7 shipped a per-class `@gc` opt-in instead).
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- Updates are blue-green **inside** the runtime: propose, approve, compile
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in-process, atomic switch, previous version resident for instant rollback.
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- The runtime is a recipe box: once language + runtime + database exist, a
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web framework arrives as a `.wo` library composing runtime capabilities —
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the recorded next story.
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## Background & Constraints
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writeonce today is a declarative Rust-based runtime (Stage 2). This story
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evolves it into an object-oriented language (`woc` OCaml compiler, `wovm` C
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VM) per the approved specs: C as the runtime's basis (libc only), no
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inheritance ever, mutable value semantics for borrowing, shard-per-core
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concurrency with ownership-moving messages, RAM-authoritative data under a
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WAL, and the blue-green VM pair for in-runtime deployment. Target OS is
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Linux; kernel primitives are the framework. The Rust runtime retires only at
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parity. Constraints: OCaml stdlib only, C libc only; docs live under
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`docs/`; prose-only planning artifacts (no implementation code in stories or
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iterations); no commits by agents — drafts go to `.dev/commit.md`.
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## Iterations (review in this order)
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| # | Iteration | Delivers |
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| --- | --- | --- |
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| 1 | [Principles doc](01-principles-doc.md) | `docs/00-principles.md` — the doctrine page every later slice links back to |
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| 2 | [VM core](02-vm-core.md) | `wovm`: `.wob` loader, register interpreter, arena, borrow word, `@gc` collector |
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| 3 | [Compiler front](03-compiler-front.md) | `woc`: lexer → parser → typechecker → ownership pass, diagnostics |
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| 4 | [Single binary end-to-end](04-single-binary-e2e.md) | emitter + conformance corpus + `woc build` self-contained binary |
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| 5 | [Language surface](05-language-surface.md) | Haxe-parity adoptions: switch, records, optionals, try/catch, statics, modules… |
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| 6 | [Program mode + stdlib](06-program-mode-stdlib.md) | `fn main`, exit codes, `fs`/`proc`/`net`/`time`/`json` builtins |
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| 7 | [log-watcher proof](07-logwatcher-proof.md) | the driving workload compiled and detecting silent deaths live |
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| 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 |
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| 8 | [Shard-actor runtime](08-shard-actor-runtime.md) | thread-per-core shards, per-shard heaps, ownership-move messaging |
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| 9 | [Database engine](09-database-engine.md) | class-shaped tables, typed WAL + recovery, `insert`/`select` execute |
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| 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 |
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| 10 | [HTTP service layer](10-http-service.md) | `service` blocks route to VM methods; REST parity with Stage 2 |
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| 11 | [Fibers](11-fibers.md) | green threads on the shard scheduler: reduction-budget preemption, park on I/O |
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| 12 | [Blue-green deploy](12-blue-green-deploy.md) | two VM slots, in-runtime compile, atomic switch, resident rollback |
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Review protocol: the developer reads one iteration, approves or amends;
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the next starts only after approval. Each iteration is an unsplittable
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value slice with its own acceptance criteria (Given/When/Then), out-of-scope
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list, and a pointer to the plan document that already sequences its tasks.
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## Related Links
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- OOP core spec: `docs/superpowers/specs/2026-08-01-oop-compiler-vm-design.md`
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- Systems track spec: `docs/superpowers/specs/2026-08-01-systems-track-design.md`
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- Blue-green spec: `docs/superpowers/specs/2026-08-03-blue-green-vm-design.md`
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- Sample+principles spec: `docs/superpowers/specs/2026-08-07-logwatcher-sample-and-principles-design.md`
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- Plan documents: `docs/superpowers/plans/` (plans 1–10), `compiler/plan/` (2, 3, 8 + architecture)
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- Roadmap map: `docs/08-project-structure.md` (build sequence)
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- Behavioral reference workload: `~/projects/log-watcher` (Haxe daemon)
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## Notes
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- Acceptance criteria live in each iteration file; this story frames the
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outcome.
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- **Critical path (locked 2026-08-08): compile and run log-watcher.**
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Iterations 3 → 4 → 5 → 6 → 7 are the committed line; nothing off that
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line lands before iteration 7's acceptance. Then 7b, then 8–12 (with 9b after the database engine).
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- **Iteration 7b (inserted 2026-08-11)** sits after the critical path
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deliberately: it delays nothing on the log-watcher line, and it must precede
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iteration 8 because the collector should be settled before shards multiply.
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It also closes iteration 4's one open gate clause and supersedes part of
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iteration 2's memory model — neither is renumbered; both point here.
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- **Future iterations, after iteration 11** (parked 2026-08-08 — recorded,
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not scheduled):
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- ~~WO-W201 `@gc`-suggestion diagnostic refinement~~ — **superseded by
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iteration 7b**: the diagnostic is retired outright, because inference
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replaces the suggestion it existed to make.
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- WO-E225 unknown-type validation broadened to `ref`/`multi`/`map`
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element types and method/fn signatures.
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- ADT container roster adoption (Stack, Queue, Set, Tree, Graph, … —
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see the roster section in
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`docs/plan/compiler/nullable-types-implementation.md`); log-watcher
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needs only `multi`/`map`, so no ADT lands before iteration 7.
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- Recorded future stories, deliberately outside this one: the web framework
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as a `.wo` library over the recipe-box runtime; UI (`##ui` SSR + live
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patches); script-based destructive schema migrations; MCP/agent wrapper
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over the management plane.
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