Files
sx/examples/1319-ffi-objc-property-sx-defined.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

73 lines
2.1 KiB
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// M2.2 second pass — `#property` on sx-defined `#objc_class`
// synthesizes getter/setter IMPs that read/write the hidden
// state struct.
//
// User writes:
// field: T #property[(modifiers)];
//
// Compiler emits:
// __<Cls>_<field>_imp(self, _cmd) -> T // load state.field
// __<Cls>_set<Field>_imp(self, _cmd, v) -> void // store state.field
// (setter skipped for `readonly`.)
//
// Both register on the class via class_addMethod with auto-derived
// selectors and type encodings.
//
// Verifies dispatch through the real Obj-C runtime by direct
// objc_msgSend — round-trips a primitive property and confirms
// `readonly` skips setter registration.
#import "modules/std.sx";
#import "modules/build.sx";
#import "modules/ffi/objc.sx";
class_getInstanceMethod :: (cls: *void, sel: *void) -> *void #foreign objc;
SxBox :: #objc_class("SxBox") {
width: i32 #property;
height: i32 #property;
area: i32 #property(readonly); // setter omitted
alloc :: () -> *SxBox;
init :: (self: *SxBox) -> *SxBox;
}
main :: () -> i32 {
inline if OS == .macos {
b := SxBox.alloc().init();
// width / height round-trip through synthesized IMPs.
b.width = 10;
b.height = 7;
w := b.width;
h := b.height;
if w != 10 or h != 7 {
print("FAIL: width/height round-trip\n");
return 1;
}
// `area` is readonly — getter registered, setter NOT.
// area starts at 0 (state zero-init); read works:
a := b.area;
if a != 0 {
print("FAIL: area expected 0, got {}\n", a);
return 1;
}
// Confirm the setter selector is absent on the class.
cls : Class = objc_getClass("SxBox".ptr);
sel_set_area : SEL = sel_registerName("setArea:".ptr);
m := class_getInstanceMethod(cls, sel_set_area);
if m != null {
print("FAIL: setArea: should not be registered (readonly)\n");
return 1;
}
print("property: w={} h={} area={}\n", w, h, a);
}
inline if OS != .macos {
print("property: w=10 h=7 area=0\n");
}
0
}