Files
sx/examples/0541-packs-pack-to-protocol-tuple.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

29 lines
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// Phase 6 — `c.sources = (..sources)`: materialize a pack into a
// protocol-typed tuple field, erasing each concrete pack element to the field's
// protocol slot. The pack `..sources: VL` holds concrete cells; `(..sources)`
// into a `(..VL(Ts))` field `xx`-erases each to its `VL(Ti)` value.
#import "modules/std.sx";
VL :: protocol(T: Type) { get :: () -> T; }
IntCell :: struct { v: i64; }
StrCell :: struct { s: string; }
impl VL(i64) for IntCell { get :: (self: *IntCell) -> i64 => self.v; }
impl VL(string) for StrCell { get :: (self: *StrCell) -> string => self.s; }
Combined :: struct($R: Type, ..$Ts: []Type) {
sources: (..VL(Ts));
value: $R;
}
build :: (..sources: VL) -> void {
c : Combined(i64, ..sources.T) = ---;
c.sources = (..sources); // pack → tuple, per-element erase
print("{} {}\n", c.sources.0.get(), c.sources.1.get());
}
main :: () -> i32 {
build(IntCell.{ v = 10 }, StrCell.{ s = "hi" }); // 10 hi
0
}