writeonce/tests/corpus/run/lang-use-local-shadows-alias/fixture.wo
shoney.arickathil 0df9b4fe31 feat(compiler): iteration 5 Tasks 1-4 — modules, language surface, switch, typedef records + enum variants
- 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.
2026-08-12 14:40:07 +02:00

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-- haxe-parity Task 1 (modules), review fix IMPORTANT 2: `secret` is
-- both a real `use` alias (secret/secret.wo) AND, inside `main`, a local
-- variable of type `Box`. `secret.hidden()` must be Box's own method
-- call on the local — lexical scope wins over a module alias, exactly
-- like everywhere else in every language with both. A regression that
-- let the module alias win instead would either misresolve this call
-- entirely or bogusly demand `secret.hidden` (secret/secret.wo's free
-- fn) be `pub` — see compile-fail/lang-use-private-access for the
-- companion case where no local intervenes and E217 still fires.
use secret
class Box {
n: Int
fn hidden() -> Int {
return self.n
}
}
fn main() {
let secret = Box { n: 42 }
print_int(secret.hidden())
}