Files
sx/examples/1208-ffi-closure-capture.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

39 lines
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// Closure free-variable capture works through `FfiIntrinsicCall`
// nodes — names referenced inside `#objc_call` / `#jni_call` /
// `#jni_static_call` argument lists from inside a closure body are
// recognized as captured variables and bound from the closure's env
// struct at call time. `passthrough_works` is the baseline (normal
// expression capture); `passthrough_via_objc_call` exercises the same
// capture through an FFI intrinsic call's arg list.
#import "modules/std.sx";
#import "modules/build.sx";
#import "modules/ffi/objc.sx";
passthrough_works :: (recv: *void) -> Closure(i32) -> *void {
closure((d: i32) -> *void => recv) // captures `recv` — fine
}
passthrough_via_objc_call :: (recv: *void) -> Closure(i32) -> i64 {
// Same `recv` capture, but inside `#objc_call(...)`'s arg list.
closure((d: i32) -> i64 => #objc_call(i64)(recv, "hash"))
}
main :: () -> i32 {
inline if OS == .macos {
f := passthrough_works(null);
p := f(0);
print("ok (passthrough works) = {}\n", p == null);
// Capture inside the `#objc_call` arg list.
ns_object := objc_getClass("NSObject".ptr);
g := passthrough_via_objc_call(ns_object);
h := g(0);
print("ok (passthrough via #objc_call) = {}\n", h != 0);
}
inline if OS != .macos {
print("skipped (not macos)\n");
}
0
}