Files
sx/examples/0530-packs-pack-interface-only.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

23 lines
707 B
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// Feature 1 — a pack element exposes ONLY the constraint protocol's interface.
// `xs[i].v` reaches a concrete field of IntCell that is not part of `Box`, so
// it's rejected even though IntCell does have `v` — a pack element is viewed
// through the protocol, like a constrained generic. (Protocol methods like
// `get()` ARE callable; see examples 193/194.)
#import "modules/std.sx";
Box :: protocol(T: Type) {
get :: () -> T;
}
IntCell :: struct { v: i64; }
impl Box(i64) for IntCell { get :: (self: *IntCell) -> i64 => self.v; }
leak :: (..xs: Box) -> i64 {
return xs[0].v; // `v` is not part of Box — error
}
main :: () -> i32 {
print("{}\n", leak(IntCell.{ v = 5 }));
0
}