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#![feature(specialization)]
// Common code used for tests that model the Fn/FnMut/FnOnce hierarchy.
pub trait Go {
fn go(&self, arg: isize);
}
pub fn go<G:Go>(this: &G, arg: isize) {
this.go(arg)
}
pub trait GoMut {
fn go_mut(&mut self, arg: isize);
}
pub fn go_mut<G:GoMut>(this: &mut G, arg: isize) {
this.go_mut(arg)
}
pub trait GoOnce {
fn go_once(self, arg: isize);
}
pub fn go_once<G:GoOnce>(this: G, arg: isize) {
this.go_once(arg)
}
impl<G> GoMut for G
where G : Go
{
default fn go_mut(&mut self, arg: isize) {
go(&*self, arg)
}
}
impl<G> GoOnce for G
where G : GoMut
{
default fn go_once(mut self, arg: isize) {
go_mut(&mut self, arg)
}
}
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