docs/examples/log-watcher (1285 lines, 7 files) now compiles clean: 0
diagnostics, a 35KB .wob written. corpus 71/0, woc runtest 565/0, every wovm
unit gate green (both dispatch flavors).
- .wob v2: each class row gains three u32 per-field arrays — the field's NAME
constant, the CLASS it refers to (or the json-raw marker), and a container
field's ELEMENT kinds. json is then a runtime service driven by metadata
instead of per-type generated code. loader/emitter/disassembler/test
assembler all read and write v2; field-name constants are interned with the
rest of the pool (interning during serialization silently loses them)
- runtime/src/json.c (new): encode by static kind + object headers + class
table (nested records need no static knowledge); decode parses and BINDS
straight into the target class — keys matched to field names, nested objects
built as the field's class, arrays as a multi of the field's element kind,
unknown keys skipped, absent keys nil. Malformed input is nil, never a trap
- `as`: `json.decode(text) as T` is the one cast this language has (WO-E403
for any other `as`, and for a bare json.decode with no target type). Its
result is `?T`, which is why the decode and the target are one instruction
- json.Value: a reserved type name for a value the source does not inspect —
the raw JSON slice, kind TEXT, re-emitted verbatim by encode
- docs: 00-wob-format.md is now the v2 reference (class metadata, TRY/ENDTRY,
the whole builtin surface, WO_T_IO); 08-builtin-surface.md documents the
text/container builtins, the OS modules with their predeclared records, and
json's two documented limits (Bool encodes 0/1, floats truncate)
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
log-watcher diagnostics 55 -> 48 (all json-rooted now). corpus 71/0, woc 565/0.
- emit.ml: a field default may now be `nil`, `{}` (a fresh empty container of
the field's declared type) or `Rec {}` (a record built from its own field
defaults) — the workload's `st: TailState = TailState {}` and
`scheduled: map<Text, CronWatch> = {}` shapes
- parser.ml/main.ml: a top-level `const` is visible to every file of its
module, not just its own file — files in a directory are one module by the
discovery contract, and the workload reads logtail.wo's `const CHUNK` from
mcp.wo. A file's own const still wins on a name collision
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
log-watcher diagnostics 129 -> 55 (json is what is left: 13 encode sites,
3 `as` parses and their cascade). corpus 71/0, woc 565/0, wovm gates green.
- runtime/src/sysio.c (new): 17 builtins behind the reserved module names —
fs.exists/list/stat/read_all/read_at/append, time.sleep/local/iso,
env.get/stopping, net.listen/accept/read/write/close, proc.run. Thin
blocking libc calls; a failed syscall traps the new WO_T_IO with errno's
own message, which `try ... catch` is how a program handles
- record-returning members (fs.stat, time.local, proc.run) take their
result record's CLASS ID as the last argument, so the VM allocates what
it fills without knowing any source type name (the err_fill pattern)
- absence is the zero word: a missing path from fs.stat and an unset
env.get are nil, not traps
- env.stopping installs SIGTERM/SIGINT handlers on first use only
- types.ml: predeclared Stat/TimeParts/Proc records (field order is the
contract with sysio.c) + the stdlib member table (arity, builtin id,
return type, result record) + stdlib return types in confident_typ
- emit.ml: stdlib member calls lower to their builtin with the record class
id appended; WO-E406 now means "no such member", not "not linked";
predeclared records enter the class table only when a program needs them
- emit.ml: fstate carries the method's declared return type, so a tail
`return []` / `return {}` gets its element kinds; a non-empty list literal
falls back to its own element type when there is no declared destination
- types.ml: confident_typ chases a container read (`c[i]`), which is what
makes a switch over a value pulled out of a map resolve; a void `try` arm
no longer demands its catch arm agree
- corpus: lang-use-stdlib-not-linked now pins WO-E406 for an unknown MEMBER
(fs.slurp) — the "not linked" premise is gone now that fs is linked
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
log-watcher parse errors 7 -> 3 (only `as` left); corpus 71/0, woc 565/0.
- wob.h/builtin.c/loader.c: WO_B_MULTI_SET — `m[i] = v` for a multi, dropping
the element it replaces (the mirror of map_set, which the format doc's sugar
rule already had; the "no element write" gap is closed)
- ast/parser: `for k, v in m` — the second name binds the value for that key
- types.ml/owner.ml: the two cursors take the map's key and value types; both
are borrows of what the map owns, so neither is dropped per iteration
- emit.ml: map form lowers to len + key_at/val_at over slot indexes (insertion
order, cont.h's parallel arrays), same loop skeleton as the multi form
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
log-watcher diagnostics 272 -> 129 (parse errors 7, stdlib-module calls 49,
lowering gaps 72). corpus 71/0, woc runtest 565/0, wovm unit gates green.
- nil (haxe-parity Task 6's literal half): `nil` keyword, Ast.NilLit, lowered
to the zero word for every `?T` — the representation the format doc already
fixes ("a nullable field stores exactly what T stores and spells nil as 0"),
so no boxing, no unbox on read, and every drop plan already skips it.
Contextual on its destination in both type derivers, like `[]`/`{}`
- 23 new builtins (wob.h ids 16..38, loader arities, builtin.c): len, byte_at,
print_err, starts_with, ends_with, index_of, last_index_of, substr, trim,
to_lower, char_of, parse_int, split, split_ws, join, slice, pop, shift,
sort, reverse, remove, key_at, val_at
- fresh-Text/fresh-multi results allocate in the VM; `split`/`split_ws` fix
their element kind (Text), `slice` copies its source's — and COPIES Text
elements so a slice and its source never both own one value
- pop/shift hand the element's ownership to the caller; remove drops the
map's own key and value; key_at/val_at expose slot-ordered enumeration
(what `for k, v in m` will lower onto)
- parse_int is optional-shaped: unparseable is 0, `?Int`'s own nil
- obj.c/obj.h: wo_str_alloc (uninitialized Text of known length) so `join`
builds its result in one allocation instead of one per element
- types.ml/emit.ml: builtin signatures, argument-shape requirements and
return types for all 23 — the return table is also what classifies a `let`
holding a fresh Text or multi as owned, so an omission there is a leak
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
VM catch frames + expression-form try/catch in the compiler. Uncaught traps
keep byte-for-byte today's surface. log-watcher parse errors 18 -> 7;
corpus 71/0, woc runtest 565/0, wovm unit gates green (both dispatch flavors).
- wob.h: WOP_TRY (A sBx: push catch frame, handler at pc+sBx) / WOP_ENDTRY;
WO_B_ERR_FILL builtin (fills the catch record: 0 code, 1 line, 2 method,
3 msg — the field-order contract with the compiler)
- vm.h/vm.c: catch stack (depth, handler pc, error reg) + the caught error;
vm_unwind takes a stop depth, so a caught trap kills every frame above the
catching one exactly as an uncaught trap would, then releases only what the
try region owned in the catching frame (drop-entry diff against the handler
pc) and resumes at the handler; RET/RET0 drop the catch frames of the frame
they leave; TRAPF resumes instead of returning when the trap was caught
- builtin.c: err_fill allocates the method/msg Texts into the record the
compiler owns, so the pending error never has to outlive the landing
- loader.c: TRY's handler target validated like a jump, error register like
any register operand; err_fill arity
- lexer/token/ast/parser: `try`/`catch` keywords; `try expr catch (e) expr`
and `catch (e) { block }`, newline allowed before `catch`; try binds looser
than every operator, so `try a / b catch (e) 0` catches the division
- types.ml: predeclared `Error` record (merged table only), catch binding,
arm-type agreement reported only when both arms are confidently typed
- owner.ml: analyze_try — the catch arm is an alternate flow join off the
entry state, the error record is an owned handler-scope local
- emit.ml: TRY/body/ENDTRY/JMP + handler prologue (NEW Error, err_fill),
join drops on both arms, `Error` class entry only for programs that catch
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Driving goal: compile docs/examples/log-watcher (1285 lines of .wo).
Diagnostics on that program: 481 -> 379; parse errors 85 -> 18.
tests/corpus via scripts/oop-e2e.sh stays 71 checks / 0 failures.
- ast.ml: `Let.ty` is a full `field_ty` (was a bare name), so `multi Text`,
`map<K, V>` and `?T` annotate a local; new `ListLit`/`MapLit` expressions;
`method_decl.is_static`; `field.pub_read`
- parser.ml: let annotations go through parse_field_ty; `[]`/`[a, b]` and
`{}` literals in expression position; `static const`/`static fn` in class
bodies (one token of lookahead — `static` stays an identifier);
`pub(read) field: T`; a `;` ends a statement on its own, so one-line
guard bodies (`{ skip(...); return; }`) parse
- emit.ml: list/map literals lower to multi_new/map_new + one multi_push per
element, element kinds from the destination's declared type (WO-E403 with
no typed destination, same rule multi_new already had); `static fn` gets a
receiverless method record (arg_cnt = params) and lowers `Cls.fn(args)`
through emit_direct with no `self`; a static can satisfy no interface
- types.ml: a written `let` annotation is now the authority for the binding's
type (the only thing that types `[]`/`{}`/`nil`); `static_method_of` +
static-call return types; method_info.is_static is wired from the AST
- owner.ml: container literals are fresh owned values, elements read in place
(inherits push()'s open borrowed-element gap, noted in the code)
- plan doc: `Spec:` header line so planboard's lint accepts the plan
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
- Modules: `use`/`pub`, directory-as-module, per-module symbol resolution (a
flat first-wins merge silently ran the wrong `pub fn` body), six reserved
stdlib namespaces typed UNKNOWN-BUT-RESERVED.
- Surface: `and`/`or` (own precedence tier, short-circuit, Bool-only), `${}`
interpolation desugared at parse time, `const`, break/continue with
drop-correct exits, do-while, inline-fn rejection.
- switch expr/stmt: required `default` over scalars/Text, arm unification,
EQ/EQS+JZ lowering, per-arm drop scopes with N-way JOIN-DROP; `default`
sorted last by a shared lowering order (textual order made arms dead).
- typedef records: structural, same shape = one class entry; `?name: T`
nullable-by-shape; emit_ctor fills omitted defaults; `type` as field name.
- Enum variants: all-bare unions = int ordinals; any-payload = one class
entry per variant, tag IS the header class_id (no header field, no format
bump); exhaustive switch without `default`; arity checked both directions.
- Payload escape modeled as move-out (pointer-kind fields only — a scalar
escape is a copy); caller reaps owned heap temps passed by borrow: two
unbounded LSan-blind leaks, 10.5 MB -> 1.5 MB flat over 300k iterations.
- Fixed en route, each with a RED repro: dead E209 builtin-arg check and
`int_to_text` missing from both types.ml builtin tables (both segfaulted
wovm), multi-file phantom double-report, emit_ctor's field temp clobbering
dst in tail position (pre-existing), warnings swallowed without an error.
- Two fenced VM builtins: `int_to_text` (13), `variant_tag` (14).
- 14+565 unit (was 14+401), corpus 71 (was 32) plain and under wovm_asan,
wovm-test + cli_smoke green. Log-watcher 307 -> 93 diagnostics (85 E101 /
4 E207 / 1 E208 / 3 W202); the 5 non-E101 residuals await Task 7 grammar.
- `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.
- Board renamed docs/plan/00-kanban.md -> docs/00-status.md and rebuilt: ▶ NEXT
PLAN pointer (iteration 4 — emitter, corpus, `woc build`) then six buckets —
stories, in progress, done, pending, discarded, learnings. It covered only the
Rust runtime before, so the whole OOP track was invisible. All 16 inbound refs
repointed; `Kanban:` banners renamed to `Status:`.
- New discarded.md (settled rejections with reasons: inheritance, `abstract`,
Money/SKU/Float, Dynamic/cast/macro/extern, AOT-to-C, Menhir, shared engine
state) and learnings.md (plumbed≠enforced, vacuous goldens, exit-0-wrong-
output, malloc-path ASan trick, deferred checks that never reach the VM).
- RECOVERED docs/plan/exploration/blue-green-vm/00-vision.md — gone from disk,
never committed (gitignored path), cited by five docs incl. principle 12.
Root cause was broader: all seven forward-roadmap plans in
docs/superpowers/plans/ were untracked and ignored, on one disk only. Dropped
the docs ignore rules with a do-not-re-add note; added __pycache__/*.pyc.
- Repaired broken links across docs/, 270 -> 36: fixes a regression from the
earlier reference/ -> .dev/reference/ move (relative paths at ../../ and
deeper were skipped), plus depth and reorg drift. The 36 residual point at
content that does not exist and need decisions, not paths.
- New spec docs/superpowers/specs/2026-08-10-logwatcher-gap-closure-design.md,
applied: `and`/`or` verdict row; Part 3 gains `env` (six modules), swaps
time.mono for iso/local, adds 22 bare core builtins; throw/time.mono/is cut
(0 uses in the sample). Plan 8: Task 2 gains and/or, Task 5 drops throw,
abstract+`is` task deleted, 8/9 renumber to 7/8. Plan 9 gains core builtins.
Plan 10 gains the 307 -> 0 diagnostic gate. WO-E205 re-filed unreachable-by-
design. types.ml header drops its false satisfaction-set claim. 00-code-
review.md reduced to a stub — its rival Phase 1-4 roadmap retired.
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).
- ast.ml: Added Nullable variant to field_ty; param.ty/method_sig.ret/method_decl.ret now use field_ty
- parser.ml: Parse ? prefix for field types, return types, parameters
- dump.ml: Render ?T in --dump-ast output
- types.ml: New typechecker (Task 6) with nullable field-kind derivation (WO_K_NULLABLE=6)
- dune: Added types module
- Added golden test fixtures for nullable types and statement/expression parser
- Added implementation plan doc
