f8403aac81
groundwork for better performance. Key points: - Separate out determining which method to use from actually selecting a method (this should enable caching, as well as the pcwalton fast-reject strategy). - Merge the impl selection back into method resolution and don't rely on trait matching (this should perform better but also is needed to resolve some kind of conflicts, see e.g. `method-two-traits-distinguished-via-where-clause.rs`) - Purge a lot of out-of-date junk and coercions from method lookups.
35 lines
839 B
Rust
35 lines
839 B
Rust
// Copyright 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.
|
|
|
|
// Test that we select between traits A and B. To do that, we must
|
|
// consider the `Sized` bound.
|
|
|
|
trait A {
|
|
fn foo(self);
|
|
}
|
|
|
|
trait B {
|
|
fn foo(self);
|
|
}
|
|
|
|
impl<T: Sized> A for *const T {
|
|
fn foo(self) {}
|
|
}
|
|
|
|
impl<T> B for *const [T] {
|
|
fn foo(self) {}
|
|
}
|
|
|
|
fn main() {
|
|
let x: [int, ..4] = [1,2,3,4];
|
|
let xptr = x.as_slice() as *const _;
|
|
xptr.foo();
|
|
}
|