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#[macro_use]
extern crate rental;
pub struct Foo {
i: i32,
}
rental! {
mod rentals {
use super::*;
#[rental(map_suffix = "T")]
pub struct SimpleRef<T: 'static> {
foo: Box<Foo>,
fr: &'foo T,
}
#[rental_mut(map_suffix = "T")]
pub struct SimpleMut<T: 'static> {
foo: Box<Foo>,
fr: &'foo mut T,
}
}
}
#[test]
fn map() {
let foo = Foo { i: 5 };
let sr = rentals::SimpleRef::new(Box::new(foo), |foo| foo);
let sr = sr.map(|fr| &fr.i);
assert_eq!(sr.rent(|ir| **ir), 5);
let foo = Foo { i: 12 };
let sm = rentals::SimpleMut::new(Box::new(foo), |foo| foo);
let sm = sm.map(|fr| &mut fr.i);
assert_eq!(sm.rent(|ir| **ir), 12);
}
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