// Phase 3 step 3.2 (PLAN-FFI.md): `#selector("explicit:string")`
// override on `#objc_class` members. Escape hatch for cases where the
// sx-side method name doesn't conveniently produce the target selector
// through the default mangling rule (Phase 3.0 — split on `_`, each
// piece becomes a keyword with a trailing `:`).
//
// Surface form mirrors `#jni_method_descriptor("(Sig)Ret")` — sits
// after the optional `-> ReturnType` and before the body / terminator.
//
// Pre-3.2: the parser doesn't know the `#selector` token; snapshot
// captures the parser error (exit=1). Next commit wires lexer + parser
// + AST + lowering and the snapshot flips to working output.
#import "modules/std.sx";
#import "modules/build.sx";

NSObject :: #foreign #objc_class("NSObject") {
    // Default mangling would yield selector "gimme" — NSObject has no
    // such IMP. The override pins it to the real selector
    // "description". Static method (no `self: *Self` first param).
    gimme :: () -> *void #selector("description");
}

// Instance-method override exercises a different lowering path
// (`lowerObjcMethodCall` rather than `lowerObjcStaticCall`). Parse-
// only on this side — main only invokes the static path because we
// don't have a real NSDictionary in scope, but the declaration locks
// in the parser + AST + lowering wiring for the multi-arg shape.
NSDictionary :: #foreign #objc_class("NSDictionary") {
    lookup :: (self: *Self, key: *void) -> *void #selector("objectForKey:");
}

main :: () -> i32 {
    inline if OS == .macos {
        d := NSObject.gimme();
        print("static override non-null: {}\n", d != null);
    }
    inline if OS != .macos {
        print("skipped (not macos)\n");
    }
    0
}