// Backfill for Phase 1D cluster 1.28 (PLAN-FFI.md): `#objc_call(bool)`
// against `BOOL`-returning selectors. Obj-C `BOOL` is single-byte on
// every Apple ABI we ship to (signed char on i386, native `bool` on
// arm64), so the slot shape is identical to `#objc_call(u8)` — this
// test is about the source-level type being meaningful, not a
// distinct ABI path.
//
// Two IMPs are installed: `yes_imp` returns true, `no_imp` returns
// false. Both are dispatched through `#objc_call(bool)` and the
// results are checked.

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

yes_imp :: (self: *void, _cmd: *void) -> bool callconv(.c) { true }
no_imp  :: (self: *void, _cmd: *void) -> bool callconv(.c) { false }

main :: () -> i32 {
    inline if OS == .macos {
        // Nil-recv: libobjc returns a zeroed slot, which decodes as false.
        nil_b := #objc_call(bool)(null, "isEqual:");
        print("nil bool     = {}\n", nil_b);

        ns_object := objc_getClass("NSObject".ptr);
        my_cls := objc_allocateClassPair(ns_object, "SxBoolProbe".ptr, 0);

        // BOOL type-encoded as `B` (C99 _Bool) in `B@:` — implicit
        // (self: id, _cmd: SEL) return BOOL. Some toolchains prefer
        // `c` (signed char) for BOOL on i386, but `B` is unambiguous
        // on arm64 and works for runtime-registered IMPs.
        sel_yes := sel_registerName("yes".ptr);
        sel_no  := sel_registerName("no".ptr);
        class_addMethod(my_cls, sel_yes, xx yes_imp, "B@:".ptr);
        class_addMethod(my_cls, sel_no,  xx no_imp,  "B@:".ptr);
        objc_registerClassPair(my_cls);

        instance := class_createInstance(my_cls, 0);
        y := #objc_call(bool)(instance, "yes");
        n := #objc_call(bool)(instance, "no");
        print("yes = {}\n", y);
        print("no  = {}\n", n);
    }
    inline if OS != .macos {
        print("skipped (not macos)\n");
    }
    0
}