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//@ run-pass
// Tests that everything still compiles and runs fine even when
// we reorder the bounds.
trait A {
fn a(&self) -> usize;
}
trait B {
fn b(&self) -> usize;
}
trait C {
fn combine<T:A+B>(&self, t: &T) -> usize;
}
struct Foo;
impl A for Foo {
fn a(&self) -> usize { 1 }
}
impl B for Foo {
fn b(&self) -> usize { 2 }
}
struct Bar;
impl C for Bar {
// Note below: bounds in impl decl are in reverse order.
fn combine<T:B+A>(&self, t: &T) -> usize {
(t.a() * 100) + t.b()
}
}
fn use_c<S:C, T:B+A>(s: &S, t: &T) -> usize {
s.combine(t)
}
pub fn main() {
let foo = Foo;
let bar = Bar;
let r = use_c(&bar, &foo);
assert_eq!(r, 102);
}
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