extern crate nodrop; // 0.1.12

use nodrop::NoDrop;
use std::ops::Drop;

struct Precious;
fn cleanup(_: Precious) { println!("cleaned up"); }

struct Abc(NoDrop<Precious>);
struct AbcDroppable(Option<Precious>);

impl Abc {
    fn make_droppable(self) -> AbcDroppable {
        self.into()
    }
}

impl From<Abc> for AbcDroppable {
    fn from(a: Abc) -> Self {
        AbcDroppable(Some(a.0.into_inner()))
    }
}

impl Drop for AbcDroppable {
    fn drop(&mut self) {
        cleanup(self.0.take().unwrap()) // Should abort or something? Do we want to panic in drop?
    }
}


fn main() {
    let abc = Abc(NoDrop::new(Precious)); // init our struct.

    abc.make_droppable();
}