Files
sx/examples/0182-types-cast-compound-types.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

28 lines
1.1 KiB
Plaintext

// `cast(T) expr` accepts any compile-time-resolvable type argument,
// including compound shapes: `*T`, `[*]T`, `?T`, `[]T`. The same lowering
// makes a compound type literal a first-class `Type` value in expression
// position (`t : Type = *i64;`), mirroring named types (`t : Type = f64;`).
// Regression (issue 0118): compound casts fell into the runtime-dispatch
// path and died with "unresolved 'unknown_expr'".
#import "modules/std.sx";
main :: () {
x := 42;
p : *i64 = @x;
q : *i64 = cast(*i64) p; // no-op pointer cast
print("a: {}\n", q.*);
addr : i64 = xx p;
r : *i64 = cast(*i64) addr; // int → ptr through compound cast
print("b: {}\n", r.*);
mp : [*]i64 = cast([*]i64) p; // ptr → many-pointer
print("c: {}\n", mp[0]);
o : ?i32 = cast(?i32) 7; // optional wrap
print("d: {}\n", o ?? -1);
arr := .[1, 2, 3];
s : []i64 = cast([]i64) arr; // array → slice
print("e: {} {}\n", s.len, s[2]);
t : Type = *i64; // first-class compound Type value
print("f: {}\n", type_name(t));
}