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//@ run-pass
#![allow(dead_code)]
trait Deserializer {
fn read_int(&self) -> isize;
}
trait Deserializable<D:Deserializer> {
fn deserialize(d: &D) -> Self;
}
impl<D:Deserializer> Deserializable<D> for isize {
fn deserialize(d: &D) -> isize {
return d.read_int();
}
}
struct FromThinAir { dummy: () }
impl Deserializer for FromThinAir {
fn read_int(&self) -> isize { 22 }
}
pub fn main() {
let d = FromThinAir { dummy: () };
let i: isize = Deserializable::deserialize(&d);
assert_eq!(i, 22);
}
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