// FFI plan step 5.1 — `build_block_convert(args: []Type, $ret: Type)
// -> string` emits the per-shape source body for the generic
// `Into(Block) for Closure(..$args) -> $R` impl that lands in step
// 5.2. Per-call-shape monomorphisation of the impl body re-runs the
// builder with concrete types bound, so each closure shape gets its
// own dedicated `__invoke` trampoline + Block literal.
//
// This test exercises the builder directly (no `#insert`, no impl
// wiring) — three pack shapes through the same `void`-returning
// wrapper plus one non-void `i32`-returning wrapper to pin the
// `return typed_fn(...)` branch. The expected output captures the
// generated source verbatim so any formatting drift surfaces here
// rather than as a downstream compile error inside the eventual
// step-5.2 impl.

#import "modules/std.sx";
#import "modules/ffi/objc_block.sx";

preview_void :: (..$args) -> string {
    return build_block_convert($args, void);
}

preview_i32 :: (..$args) -> string {
    return build_block_convert($args, i32);
}

run_all :: () {
    print("--- void / 0 args ---\n{}\n", preview_void());
    print("--- void / bool ---\n{}\n", preview_void(true));
    print("--- void / i64, string ---\n{}\n", preview_void(42, "hi"));
    print("--- i32 / f64 ---\n{}\n", preview_i32(3.14));
}
#run run_all();

main :: () { print("rt\n"); }