66bdc70bf1
Move examples/*.sx and their expected/ snapshots into per-category subfolders (examples/<category>/...). Folder = leading filename token, with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus runner and LSP sweep now discover each category's expected/ dir, while issues/ stays flat. Example 1058's repo-root-relative companion import is made file-relative. Path strings embedded in 164 snapshots were regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
42 lines
1.5 KiB
Plaintext
42 lines
1.5 KiB
Plaintext
// Register a brand-new Obj-C class from sx and prove a sx-defined method
|
|
// actually runs when dispatched through `objc_msgSend`.
|
|
//
|
|
// The flow:
|
|
// 1. `objc_allocateClassPair(NSObject, "SxThing", 0)` returns an unregistered Class.
|
|
// 2. `class_addMethod(cls, sel_hello, IMP, "v@:")` attaches our sx function as
|
|
// the `hello` method (type encoding "v@:" = void method(id self, SEL _cmd)).
|
|
// 3. `objc_registerClassPair(cls)` finalizes it.
|
|
// 4. `class_createInstance(cls, 0)` returns an `id` for a fresh instance.
|
|
// 5. typed-cast `objc_msgSend` for `void (id, SEL)` and dispatch `hello`.
|
|
// If the IMP ran, the global `g_marker` is non-zero and we return it as exit.
|
|
|
|
#import "modules/std.sx";
|
|
#import "modules/ffi/objc.sx";
|
|
|
|
g_marker : i32 = 0;
|
|
|
|
// IMP for `hello`. Must use C calling convention so `self` and `_cmd` land in
|
|
// x0 and x1 the way the Obj-C runtime expects.
|
|
hello_imp :: (self: *void, _cmd: *void) abi(.c) {
|
|
g_marker = 42;
|
|
}
|
|
|
|
main :: () -> i32 {
|
|
NSObject := objc_getClass("NSObject".ptr);
|
|
SxThing := objc_allocateClassPair(NSObject, "SxThing".ptr, 0);
|
|
sel_hello := sel_registerName("hello".ptr);
|
|
|
|
ok := class_addMethod(SxThing, sel_hello, xx hello_imp, "v@:".ptr);
|
|
if !ok { return 1; }
|
|
objc_registerClassPair(SxThing);
|
|
|
|
obj := class_createInstance(SxThing, 0);
|
|
if obj == xx 0 { return 2; }
|
|
|
|
// [obj hello]
|
|
msg : (*void, *void) -> void abi(.c) = xx objc_msgSend;
|
|
msg(obj, sel_hello);
|
|
|
|
return g_marker; // 42 if hello_imp ran
|
|
}
|