Files
sx/examples/0529-packs-protocol-pack-parameterized.sx
agra d8076b9333 lang: rename signed integer types sN -> iN
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
2026-06-12 09:31:53 +03:00

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// Feature 1 — method calls on a PARAMETERIZED protocol pack (the canonical
// shape: `..xs: ValueListenable` where each element conforms with its own
// type-arg). Calling the protocol method `get()` on `xs[i]` resolves to the
// concrete element's impl, even though each element binds a different `T`.
//
// (Parameterised-protocol impl methods with a concrete source type are now
// registered as `<Source>.<method>`, so UFCS — and thus `xs[i].get()` —
// resolves them.)
#import "modules/std.sx";
Box :: protocol(T: Type) {
get :: () -> T;
}
IntCell :: struct { v: i64; }
StrCell :: struct { s: string; }
impl Box(i64) for IntCell { get :: (self: *IntCell) -> i64 => self.v; }
impl Box(string) for StrCell { get :: (self: *StrCell) -> string => self.s; }
describe :: (..xs: Box) -> void {
// xs[0] : Box(i64), xs[1] : Box(string) — different type-args per position.
print("first={} second={}\n", xs[0].get(), xs[1].get());
}
main :: () -> i32 {
describe(IntCell.{ v = 11 }, StrCell.{ s = "hi" });
describe(StrCell.{ s = "x" }, IntCell.{ v = 99 });
0
}