Files
sx/examples/0751-modules-forward-alias-ns-before.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

37 lines
1.6 KiB
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// Source-aware forward-alias fixpoint — the INITIAL scan registration (E1.5).
// Sibling of 0750, but the namespaced import is placed BEFORE the forward alias:
//
// ns :: #import ".../dep.sx"; // authors a same-name `B :: u8`
// A :: B; // forward alias
// B :: u64; // its LOCAL target, declared later
//
// Because `ns` is scanned first, dep's `B :: u8` is already in the global
// `type_alias_map` when `A :: B` is scanned. The pre-E1.5-attempt-2 `scanDecls`
// identifier-RHS branch resolved the RHS through that GLOBAL map and bound `A` to
// dep's `u8` right there; the per-source fixpoint guard then saw `A` already
// resolved and skipped it, so the source-aware leaf never corrected it (`A` came
// out `u8`, truncating 300 -> 44). The source-aware scan registration resolves
// `B` AS SEEN FROM main's source: dep's `B` is namespaced-only (not bare-visible)
// and main's `B` is not registered yet, so `A` is left UNWRITTEN and the fixpoint
// binds it to the local `B :: u64` once that registers.
//
// Observable: a runtime 300 coerced into an `A`-typed slot round-trips as 300
// when `A` is `u64` (correct) and truncates to 44 when `A` is wrongly `u8`.
// Regression (stdlib E1.5).
#import "modules/std.sx";
ns :: #import "0751-modules-forward-alias-ns-before/dep.sx";
A :: B;
B :: u64;
main :: () -> i32 {
n : i64 = 300;
a : A = xx n;
b : B = xx n;
print("forward A (u64=300): {}\n", cast(i64) a);
print("direct B (u64=300): {}\n", cast(i64) b);
print("ns.width(): {}\n", ns.width());
return 0;
}