c0e1a5db82
A bare reserved-type-name `::` declaration was silently accepted, and the
attempt-2 lowerCall rewrite then made a bare `s2 :: (…) {…}` function callable —
bypassing the backtick rule for handwritten sx. The reserved-name binding check
covered `:=` / typed-local / param / captures but NOT the `::` declaration form.
- ast: `ConstDecl`/`FnDecl` carry `is_raw` + `name_span` threaded from the parser
(parseConstBinding / parseFnDecl, all call sites incl. struct/impl methods).
- semantic_diagnostics: reject a bare reserved spelling at EVERY declaration-name
site — const, function (incl. struct/impl methods), struct/enum/union/error-set,
protocol, foreign-class, ufcs alias, namespaced/library/c-import name. Backtick
(`is_raw`) and the compiler's `#builtin` definition (`string :: []u8 #builtin`)
are the only exemptions; a value whose node is itself a named decl defers to
that node's own check.
- c_import: synthesized foreign fn_decls are `is_raw = true`, so a C function
whose own name collides with a reserved spelling (`int s2(int);`) imports and
bare-calls unedited.
- lower: scope the `.type_expr`→`.identifier` call rewrite to a callee FnDecl of
RAW provenance (`is_raw`) — only a backtick / `#import c` foreign fn can carry a
reserved-name spelling, so a non-raw match never gets rewritten.
- examples: 0153 (positive — backtick `::` const + fn, bare + tick call), 1140
(negative — bare `::` const + fn rejected).
- docs: specs.md + readme.md state the backtick is required at every binding site
including `::` const / function / type declarations; issue 0089 banner updated.
20 lines
832 B
Plaintext
20 lines
832 B
Plaintext
// A reserved/builtin type-name spelling is rejected as the NAME of a `::`
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// declaration too — both a constant (`s2 :: 5`) and a function
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// (`u8 :: (…) {…}`). A function name and a const name are binding sites just
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// like `s2 := …`; previously the `::` decl forms slipped past the
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// reserved-name check, so a bare reserved-name function compiled silently and
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// became callable — bypassing the backtick rule that handwritten sx must use.
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// The backtick escape (`` `s2 :: … ``, examples/0153) is the only way to spell
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// these names; `#import c` foreign decls remain exempt (examples/1220).
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//
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// Regression (issue 0089). Expected: one error per declaration, each caret on
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// the declared name; exit 1.
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#import "modules/std.sx";
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s2 :: 5;
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u8 :: (n: s64) -> s64 { return n + 7; }
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main :: () -> s32 {
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return 0;
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}
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