Files
sx/examples/1023-errors-tag-interpolation.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

30 lines
1.0 KiB
Plaintext

// Error-tag `{}` interpolation (ERR step E3 — tag-name table). Formatting an
// error-set value with `{}` renders the tag NAME (`BadDigit`), not the raw id,
// reusing the `any_to_string` dispatch (new `error_set` category → the
// `error_tag_name` builtin → the always-linked tag-name table indexed by global
// tag id). Works for a bound tag, a re-raised/caught tag, and inside text.
#import "modules/std.sx";
E :: error { BadDigit, Empty, Overflow }
parse :: (n: i32) -> (i32, !E) {
if n < 0 { raise error.BadDigit; }
if n == 0 { raise error.Empty; }
return n * 2;
}
main :: () -> i32 {
a : E = error.BadDigit;
b : E = error.Overflow;
print("a={} b={}\n", a, b); // a=BadDigit b=Overflow
// A tag bound by `catch` interpolates too (diverging handler).
v := parse(0) catch (e) {
print("parse failed with {}\n", e); // parse failed with Empty
return 0;
};
print("v={}\n", v); // not reached (parse(0) raises Empty)
return 0;
}