Files
sx/examples/0157-types-backtick-parameterized-raw-type.sx
agra ef8f021c01 feat(lang): universal raw identifier — parser exhaustiveness + raw type continuations + sema/LSP [F0.6]
Closes the remaining three F0.6 findings so the universal backtick raw
identifier holds in BOTH classifiers and at EVERY parser construction site.

1. Struct-body constants thread is_raw + name_span. The struct-body const
   forms (untyped `` `s2 :: 5 `` and typed `` `s2 : T : v ``) built the
   const_decl node without name_span/is_raw, so a backtick const was falsely
   rejected and a bare reserved-name const caretted at 1:1. They now capture
   both. Structural cure: `ast.ConstDecl`'s name_span + is_raw carry NO
   default, so the compiler rejects any construction site that omits them
   (mirrors checkBindingName's required `is_raw` arg). FnDecl keeps its
   defaults — every parser fn_decl routes through parseFnDecl whose
   `name_is_raw` is a required parameter (equivalent guarantee).

2. Raw identifier in TYPE position flows through the normal continuations.
   parseTypeExpr no longer returns a terminal type_expr for a raw atom; the
   raw flag rides the atom through the qualified-path / Closure / parameterized
   continuations, so `` `s2(s64) ``, `` *`s2 ``, `` ?`s2 `` all parse.
   ParameterizedTypeExpr carries is_raw; resolveParameterizedWithBindings
   skips the `Vector` intrinsic when raw.

3. sema/LSP (the second classifier) honors is_raw. Type.fromTypeExpr returns
   null for a raw type_expr; resolveTypeNode skips the builtin classifier when
   raw; resolveTypeNameStr takes a skip_builtin arg threaded from te/id.is_raw
   (compound inner names pass false). A backtick reserved-name annotation now
   resolves to the user type in the editor index, not the builtin.

Tests: examples/0156 (struct-body const), 0157 (parameterized raw type +
wrappers), 1142 (bare struct-body const errors, caret on name); src/sema.test.zig
pins the LSP raw-type resolution (fail-before verified). Gate: 365 unit tests,
429 examples, 0 failed.
2026-06-04 21:14:35 +03:00

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// Backtick raw identifier in PARAMETERIZED type position. A raw type reference
// (`` `s2 ``) flows through the SAME type-expression continuations as a bare
// name, so a reserved-spelled GENERIC template can be instantiated
// (`` `s2(s64) ``) and the result composes under pointer/field wrappers
// (`` *`s2(s64) ``, a struct field typed `` `s2(s64) ``). A bare `s2` in type
// position is still the 2-bit signed int. Complements examples/0154 (nullary
// raw type references).
// Regression (issue 0089 — attempt-5: the raw type atom no longer parses as a
// terminal `type_expr`; it reaches the parameterized + wrapper continuations).
#import "modules/std.sx";
`s2 :: struct($T: Type) {
x: $T;
}
Wrapper :: struct {
inner: `s2(s64); // raw parameterized type as a struct field
}
main :: () -> s32 {
v : `s2(s64);
v.x = 7;
p : *`s2(s64) = @v; // pointer to a raw parameterized type
w : Wrapper = ---;
w.inner.x = 12;
print("val = {}\n", v.x);
print("ptr = {}\n", p.x);
print("fld = {}\n", w.inner.x);
return 0;
}