// M1.2 A.6 — synthesized `-dealloc` IMP frees the sx state
// struct and chains to `[super dealloc]` via
// `objc_msgSendSuper2`.
//
// Round-trip:
//   1. [SxFoo alloc] returns a fresh instance with state bound.
//   2. release the instance — runtime invokes our -dealloc IMP.
//   3. Verify the IMP fired: another alloc/release cycle works
//      without crashes, and the runtime reports the class
//      properly implements -dealloc.
//
// Full instance-state round-trips (sx-side `f := SxFoo.alloc();
// f.bump();`) await A.7's dispatch-gate opening.

#import "modules/std.sx";
#import "modules/build.sx";
#import "modules/ffi/objc.sx";

class_getInstanceVariable :: (cls: *void, name: [*]u8) -> *void #foreign objc;
class_getMethodImplementation :: (cls: *void, sel: *void) -> *void #foreign objc;

SxFoo :: #objc_class("SxFoo") {
    counter: i32;

    bump :: (self: *Self) {
        self.counter += 1;
    }
}

main :: () -> i32 {
    inline if OS == .macos {
        cls : Class = objc_getClass("SxFoo".ptr);
        if cls == null { print("FAIL: SxFoo not registered\n"); return 1; }

        // Confirm the runtime sees our -dealloc IMP.
        sel_dealloc : SEL = sel_registerName("dealloc".ptr);
        imp_dealloc : *void = class_getMethodImplementation(cls, sel_dealloc);
        if imp_dealloc == null { print("FAIL: dealloc IMP missing\n"); return 1; }

        // alloc + release — synthesized -dealloc IMP fires inside.
        sel_alloc : SEL = sel_registerName("alloc".ptr);
        alloc_fn : (cls: *void, sel: *void) -> *void callconv(.c) = xx objc_msgSend;
        instance : *void = alloc_fn(cls, sel_alloc);
        if instance == null { print("FAIL: +alloc returned null\n"); return 1; }

        sel_release : SEL = sel_registerName("release".ptr);
        release_fn : (obj: *void, sel: *void) -> void callconv(.c) = xx objc_msgSend;
        release_fn(instance, sel_release);

        // Run another cycle to confirm dealloc didn't corrupt runtime state.
        instance2 : *void = alloc_fn(cls, sel_alloc);
        if instance2 == null { print("FAIL: +alloc round 2 returned null\n"); return 1; }
        release_fn(instance2, sel_release);

        print("dealloc: ok\n");
    }
    inline if OS != .macos {
        print("dealloc: ok\n");
    }
    0
}