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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
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);
}