struct Outer[T] {
mut:
	inner Inner[T]
}

struct Inner[T] {
	val T
}

fn (mut i Inner[T]) next[S](input S) f64 {
	$if S is f32 {
		return 32
	} $else {
		panic('"${S.name}" is not supported')
		return 0
	}
}

fn test_generics_method_on_nested_struct() {
	mut outer := Outer[f64]{
		inner: Inner[f64]{
			val: 1.1
		}
	}
	r1 := outer.inner.next[f32](99.0)
	println(r1)
	assert r1 == 32.0

	r2 := outer.inner.next[f64, f32](99.0)
	println(r2)
	assert r2 == 32.0

	r3 := outer.inner.next(f32(99.0))
	println(r3)
	assert r3 == 32.0
}