35 lines
719 B
Rust
35 lines
719 B
Rust
// run-pass
|
|
|
|
// Tests that we can combine a default impl that supplies one method with a
|
|
// full impl that supplies the other, and they can invoke one another.
|
|
|
|
#![feature(specialization)] //~ WARN the feature `specialization` is incomplete
|
|
|
|
trait Foo {
|
|
fn foo_one(&self) -> &'static str;
|
|
fn foo_two(&self) -> &'static str;
|
|
fn foo_three(&self) -> &'static str;
|
|
}
|
|
|
|
struct MyStruct;
|
|
|
|
default impl<T> Foo for T {
|
|
fn foo_one(&self) -> &'static str {
|
|
self.foo_three()
|
|
}
|
|
}
|
|
|
|
impl Foo for MyStruct {
|
|
fn foo_two(&self) -> &'static str {
|
|
self.foo_one()
|
|
}
|
|
|
|
fn foo_three(&self) -> &'static str {
|
|
"generic"
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
assert!(MyStruct.foo_two() == "generic");
|
|
}
|