- 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.
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38 lines
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-- haxe-parity Task 3: `switch` as an expression -- value-yielding over
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-- both subjects this task covers (Int, Text), proving arm selection
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-- (each case fires only for its own value, multi-value `case a, b:`
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-- fires for either) and the required `default` fires for anything
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-- else. `status_of`/`greet` mirror the sample's own shape
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-- (docs/examples/log-watcher/mcp.wo's `status_text`/`dispatch`) closely
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-- enough to be a real proof, not a toy: a `let`-bound switch result,
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-- multiple values per case, `default` last.
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fn status_of(code: Int) -> Text {
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let text = switch code {
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case 200: "OK";
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case 404, 410: "Gone";
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case 500: "Server Error";
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default: "Unknown";
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};
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return text;
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}
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fn greet(name: Text) -> Text {
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return switch name {
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case "alice": "hi alice";
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case "bob", "bobby": "hi bob";
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default: "hi stranger";
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};
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}
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fn main() -> Int {
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print(status_of(200));
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print(status_of(404));
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print(status_of(410));
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print(status_of(500));
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print(status_of(1));
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print(greet("alice"));
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print(greet("bob"));
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print(greet("bobby"));
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print(greet("carol"));
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return 0;
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}
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