640f59dc54
Completes the issue-0089 backtick raw-identifier / `#import c` exemption across all remaining identifier positions and closes three boundary gaps the F0.6 review found. 1. Exhaustive raw-binding coverage. The `is_raw` bit now threads through `ast.Identifier` and EVERY binding/capture form — `IfExpr`/`WhileExpr` optional bindings, `ForExpr` capture + index, `MatchArm` capture, `CatchExpr`/`OnFailStmt` tag bindings, `DestructureDecl` per-name, and the protocol-default-body / foreign-class method param lists — not just `var_decl`/`param`. `UnknownTypeChecker` skips the reserved-name check at each arm when raw, so a backtick works in every identifier position while a bare reserved spelling still errors (issue 0076 preserved). 2. Raw identifier is never a type. `parseTypeExpr`'s atom rejects a raw identifier in type position (`x : `s2 = 1`, `List(`s2)`) with an accurate diagnostic instead of silently type-classifying it. 3. Reserved-name function bare-callable. A bare `s2(4)` parses its callee as a `.type_expr` (reserved spelling); `lowerCall` now rewrites a type_expr callee to an identifier when a function of that name is in scope, so a backtick-declared sx fn and a `#import c` foreign fn whose C name collides with a reserved type spelling both resolve by their bare name. (`TypeName(val)` is not a cast, so there is no ambiguity.) Tests: examples/0152 (every control-flow/capture form + bare ref/call/member access), examples/1054 (catch/onfail tag bindings), examples/1139 (raw in type position rejected), examples/1220 extended (foreign reserved-name function bare-call). 0076 negatives 1119/1121/1122/1123/1124/1125 stay green. Gate: zig build + zig build test + 422 examples pass. specs.md + readme.md updated; issues/0089 RESOLVED banner refreshed.
58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
// Backtick raw identifier across every control-flow / capture / binding form,
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// plus bare later uses. A reserved type-name spelling (`s2`, `u8`, …) works as a
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// binding name in a destructure, an `if`/`while` optional binding, a `for`
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// capture + index, and a match-arm capture; a backtick-named function is
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// bare-callable; and a backtick struct field is bare- or backtick-accessible.
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// The escape is needed only at the binding site — a later BARE reference / call
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// / member access resolves to the binding. A *bare* binding name is still the
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// reserved type (see examples/1121), so the escape is the only way to spell
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// these as values.
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// Regression (issue 0089 — attempt-2 completeness across binding forms).
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#import "modules/std.sx";
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pair :: () -> (s64, s64) { (1, 2) }
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maybe :: () -> ?s64 { return 42; }
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// Function named with a reserved spelling — bare-callable (no backtick at call).
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`s2 :: (n: s64) -> s64 { return n + 1; }
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Quad :: struct { `s1: s32; `s2: s32; }
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main :: () -> s32 {
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// destructure binding names
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`u8, rest := pair();
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print("dstr = {} {}\n", `u8, rest);
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// if optional binding + bare-position reference inside the branch
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if `s16 := maybe() {
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print("if = {}\n", `s16);
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}
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// while optional binding (name only — the while binding isn't body-exposed)
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while `s32 := maybe() {
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break;
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}
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// for capture + index names
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xs := [3]s64.{ 10, 20, 30 };
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for xs: (`bool, `u16) {
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print("for = {} @ {}\n", `bool, `u16);
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}
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// match-arm capture
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opt: ?s64 = 5;
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m := if opt == {
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case .some: (`string) { `string * 2 }
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case .none: { 0 }
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};
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print("match = {}\n", m);
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// backtick function called BARE and via backtick — both resolve to the fn
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print("call = {} {}\n", s2(10), `s2(10));
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// struct field named with a reserved spelling: bare + backtick member access
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q := Quad.{ `s1 = 7, `s2 = 9 };
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print("field = {} {} | {} {}\n", q.s1, q.s2, q.`s1, q.`s2);
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return 0;
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}
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