shoney.arickathil
d30ad04bd9
- blocking stdlib calls that PARK (net.accept, socket read/write, time.sleep, a child wait) no longer restart the syscall when the stop flag is set on an interruption: a server sitting in accept ignored SIGTERM and only `kill -9` ended it - a stop is NOT a trap -- builtin.h's WO_SYS_STOPPED carries no error record and no catch handler sees it (`try` must not swallow SIGTERM); the VM unwinds the whole stack through the same drop machinery an uncaught trap uses, so nothing leaks on the way out - wo_vm_call gained a third outcome (1 = stopped); the CLI maps it to the status the program's own `return 0` would have given, and a regular-file read keeps its plain EINTR retry -- it does not park - an ASSIGNMENT was not an ownership boundary: `api_key = j.mcp.apiKey` moved the field pointer into the local, so the local aliased the record and the first unwind freed the same string twice (SIGSEGV in class_free). `let` copied a Text place, assignment now does too -- the same double free was latent on the normal exit path, hidden by the order the compiler happens to emit drops in - log-watcher-accept is 7 checks: the seventh is the stop itself, with the hard kill demoted to a fallback whose use is the failure - measured under ASan: mcp parked, mcp after traffic, watch and run all exit rc 0 with zero leaks; SIGINT behaves as SIGTERM - gates: oop-accept ALL CRITERIA MET, oop-e2e 71/0, woc-test 565/0, wovm-test green, log-watcher 7/0 Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
||
|---|---|---|
| .. | ||
| bin | ||
| src | ||
| test | ||
| dune-project | ||
| README.md | ||
compiler/ — the OCaml woc compiler
Lexer → parser → typechecker → ownership pass → bytecode emitter, for .wo. OCaml stdlib only (no Menhir, no ppx); dune is the build runner. Sibling of the C wovm bytecode VM (runtime/) — the two halves of the OOP track's spec (docs/superpowers/specs/2026-08-01-oop-compiler-vm-design.md) meet at plan 3, where woc's emitted .wob runs on wovm.
Stage: plan 3 (docs/plan/compiler/2026-08-01-wob-emit-e2e-single-binary.md) complete, Tasks 1–6 + 8 (Task 7, a parity harness against the Rust runtime, was deferred by explicit decision — the two stacks now diverge by design). .wo source compiles to .wob bytecode (--emit) and to a single self-contained executable (build) that runs wovm with no arguments and no repo-relative dependency. Milestone 1's acceptance gate — compile-time budget, the full conformance corpus under ASan, the single-binary smoke, both unit suites — is just oop-accept. Plan 2 (lexer through ownership pass) shipped first and is unchanged.
Requirements
OCaml 4.14.1, dune 3.14.0 — Ubuntu 24.04 apt packages (sudo apt install ocaml dune), the version floor. Confirm with ocaml -version / dune --version. No opam packages, no Menhir, no ppx — stdlib only.
Build, test
cd compiler && dune build # -> _build/default/bin/woc
cd compiler && dune runtest # test_diag unit checks + runner golden/CLI-smoke suite
just woc-build # same, from the repo root
just woc-test # same, from the repo root
WOC_BLESS=1 dune runtest (from compiler/) rewrites golden .expected files to match current output — use it once, by hand, to seed or intentionally update a fixture.
Running woc
woc <path> # compile (lex, parse, typecheck, ownership-check); nothing prints on success
woc --dump-tokens <path> # stdout: one line per lexed token
woc --dump-ast <path> # stdout: the declaration + body AST, indented
woc --dump-owner <path> # stdout: the ownership pass's four tables (moves, drops, rc, residual)
woc --dump-bc <path> # stdout: disassembled bytecode for every emitted method
woc --emit <path> -o <out.wob> # compile through to a .wob bytecode module, runnable by wovm
woc build <dir> -o <app> [--runtime <path>]
# compile + append the .wob image to a copy of wovm (default
# runtime/wovm, or --runtime) into one self-contained <app>
<path> is a single .wo file or a directory. A directory is discovered recursively for every .wo file under it — same contract as wo run (crates/rt/src/lib.rs::discover): dot-prefixed entries and target/data/node_modules are skipped, results are sorted by path. Every discovered file compiles as one program (declarations in one file resolve for bodies in another, regardless of discovery order); diagnostics from every file and every stage print sorted by (file, line, col). For multi-file --dump-* output, each file's dump is preceded by a === path === header line (compiler/src/dump.ml's file_header) — a single-file run never prints one.
Diagnostics render as file:line:col: severity CODE: message plus a source excerpt with a caret; every shipped code is cataloged in docs/plan/oop-vm/01-error-catalog.md. Exit codes: 0 clean compile, 1 diagnostics reported, 2 usage/IO failure.
Layout
src/— one module per stage:diag(diagnostics, collector, exit-code decision),token/lexer,ast/parser,types(typechecker),owner(MVS ownership pass),emit(bytecode emitter, consumesowner's four tables),disasm(bytecode disassembler, backs--dump-bc),dump(stable text dumps for all of the above)bin/— thewocexecutable: CLI parsing, file discovery, the multi-file/cross-file driver,--emit/buildoutputtest/—runner.ml(golden runner + CLI smoke) andtest_diag.ml(diag.ml unit checks);test/golden/<stage>/holds one-file-per-fixture goldens (tokens,ast,owner,owner-err,bc);test/fixtures/driver/holds the multi-file CLI-smoke fixtures (directory discovery, cross-file symbols, diagnostic ordering) that don't fit the one-.wo-file-per-fixture golden shape
Governing docs (all under docs/, not here — this file stays an orientation README): spec docs/superpowers/specs/2026-08-01-oop-compiler-vm-design.md; plans docs/plan/compiler/2026-08-01-woc-compiler-front.md and 2026-08-01-wob-emit-e2e-single-binary.md (+ architecture.md, nullable-types-implementation.md, 2026-08-01-haxe-parity-language.md in the same directory). Format contract: docs/plan/oop-vm/00-wob-format.md. Error catalog: docs/plan/oop-vm/01-error-catalog.md. Conformance corpus contract (fixture layout woc's golden output feeds into): docs/plan/oop-vm/02-corpus.md; source-language builtin surface woc accepts: docs/plan/oop-vm/08-builtin-surface.md. Runtime sibling: runtime/README.md.