ce0907e46e
Change to resolve and update compiler and libs for uses. [breaking-change] Enum variants are now in both the value and type namespaces. This means that if you have a variant with the same name as a type in scope in a module, you will get a name clash and thus an error. The solution is to either rename the type or the variant.
35 lines
1.2 KiB
Rust
35 lines
1.2 KiB
Rust
// Copyright 2012-2014 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.
|
|
|
|
enum Nil {NilValue}
|
|
struct Cons<T> {head:int, tail:T}
|
|
trait Dot {fn dot(&self, other:Self) -> int;}
|
|
impl Dot for Nil {
|
|
fn dot(&self, _:Nil) -> int {0}
|
|
}
|
|
impl<T:Dot> Dot for Cons<T> {
|
|
fn dot(&self, other:Cons<T>) -> int {
|
|
self.head * other.head + self.tail.dot(other.tail)
|
|
}
|
|
}
|
|
fn test<T:Dot> (n:int, i:int, first:T, second:T) ->int {
|
|
//~^ ERROR: reached the recursion limit during monomorphization
|
|
match n {
|
|
0 => {first.dot(second)}
|
|
// Error message should be here. It should be a type error
|
|
// to instantiate `test` at a type other than T. (See #4287)
|
|
_ => {test (n-1, i+1, Cons {head:2*i+1, tail:first}, Cons{head:i*i, tail:second})}
|
|
}
|
|
}
|
|
pub fn main() {
|
|
let n = test(1, 0, NilValue, NilValue);
|
|
println!("{}", n);
|
|
}
|