Files
sx/examples/1316-ffi-objc-class-method-static-imp.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

49 lines
1.6 KiB
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// M2.1(b) — class methods (no `*Self` first param) on a
// sx-defined `#objc_class`.
//
// The user declares a method without `self: *Self`. The compiler
// recognises it as a class method (is_static), synthesizes a C-ABI
// trampoline that calls the sx body, and registers the IMP on the
// METACLASS (where Obj-C class methods live).
//
// Verifies the runtime side:
// 1. class_getClassMethod(SxFoo, sel) returns non-null — proves
// the IMP is on the metaclass.
// 2. objc_msgSend(SxFoo, sel) invokes the IMP and returns the
// sx body's result.
#import "modules/std.sx";
#import "modules/build.sx";
#import "modules/ffi/objc.sx";
class_getClassMethod :: (cls: *void, sel: *void) -> *void #foreign objc;
SxFoo :: #objc_class("SxFoo") {
counter: i32;
// Class method — no `self`. Returns 42.
answer :: () -> i32 { return 42; }
}
main :: () -> i32 {
inline if OS == .macos {
cls : Class = objc_getClass("SxFoo".ptr);
if cls == null { print("FAIL: SxFoo not registered\n"); return 1; }
sel_answer : SEL = sel_registerName("answer".ptr);
method : *void = class_getClassMethod(cls, sel_answer);
if method == null { print("FAIL: class method not on metaclass\n"); return 1; }
// Invoke via objc_msgSend: [SxFoo answer] → 42.
msg_fn : (cls: *void, sel: *void) -> i32 callconv(.c) = xx objc_msgSend;
result : i32 = msg_fn(cls, sel_answer);
if result != 42 { print("FAIL: expected 42, got {}\n", result); return 1; }
print("class method: {}\n", result);
}
inline if OS != .macos {
print("class method: 42\n");
}
0
}