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|
// run-pass
#![feature(trait_upcasting)]
#![allow(incomplete_features)]
trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
fn a(&self) -> i32 {
10
}
fn z(&self) -> i32 {
11
}
fn y(&self) -> i32 {
12
}
}
trait Bar1: Foo {
fn b(&self) -> i32 {
20
}
fn w(&self) -> i32 {
21
}
}
trait Bar2: Foo {
fn c(&self) -> i32 {
30
}
fn v(&self) -> i32 {
31
}
}
trait Baz: Bar1 + Bar2 {
fn d(&self) -> i32 {
40
}
}
impl Foo for i32 {
fn a(&self) -> i32 {
100
}
}
impl Bar1 for i32 {
fn b(&self) -> i32 {
200
}
}
impl Bar2 for i32 {
fn c(&self) -> i32 {
300
}
}
impl Baz for i32 {
fn d(&self) -> i32 {
400
}
}
fn main() {
let baz: &dyn Baz = &1;
let _: &dyn std::fmt::Debug = baz;
assert_eq!(*baz, 1);
assert_eq!(baz.a(), 100);
assert_eq!(baz.b(), 200);
assert_eq!(baz.c(), 300);
assert_eq!(baz.d(), 400);
assert_eq!(baz.z(), 11);
assert_eq!(baz.y(), 12);
assert_eq!(baz.w(), 21);
assert_eq!(baz.v(), 31);
let bar1: &dyn Bar1 = baz;
let _: &dyn std::fmt::Debug = bar1;
assert_eq!(*bar1, 1);
assert_eq!(bar1.a(), 100);
assert_eq!(bar1.b(), 200);
assert_eq!(bar1.z(), 11);
assert_eq!(bar1.y(), 12);
assert_eq!(bar1.w(), 21);
let bar2: &dyn Bar2 = baz;
let _: &dyn std::fmt::Debug = bar2;
assert_eq!(*bar2, 1);
assert_eq!(bar2.a(), 100);
assert_eq!(bar2.c(), 300);
assert_eq!(bar2.z(), 11);
assert_eq!(bar2.y(), 12);
assert_eq!(bar2.v(), 31);
let foo: &dyn Foo = baz;
let _: &dyn std::fmt::Debug = foo;
assert_eq!(*foo, 1);
assert_eq!(foo.a(), 100);
let foo: &dyn Foo = bar1;
let _: &dyn std::fmt::Debug = foo;
assert_eq!(*foo, 1);
assert_eq!(foo.a(), 100);
let foo: &dyn Foo = bar2;
let _: &dyn std::fmt::Debug = foo;
assert_eq!(*foo, 1);
assert_eq!(foo.a(), 100);
}
|
