]>
git.proxmox.com Git - rustc.git/blob - src/test/run-pass/issue-2185.rs
1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
12 // ignore-lexer-test FIXME #15881
14 // notes on this test case:
15 // On Thu, Apr 18, 2013-2014 at 6:30 PM, John Clements <clements@brinckerhoff.org> wrote:
16 // the "issue-2185.rs" test was ignored with a ref to #2263. Issue #2263 is now fixed,
17 // so I tried it again, and after adding some &self parameters, I got this error:
19 // Running /usr/local/bin/rustc:
20 // issue-2185.rs:24:0: 26:1 error: conflicting implementations for a trait
21 // issue-2185.rs:24 impl iterable<uint> for 'static ||uint|| {
22 // issue-2185.rs:25 fn iter(&self, blk: |v: uint|) { self( |i| blk(i) ) }
24 // issue-2185.rs:20:0: 22:1 note: note conflicting implementation here
25 // issue-2185.rs:20 impl<A> iterable<A> for 'static ||A|| {
26 // issue-2185.rs:21 fn iter(&self, blk: |A|) { self(blk); }
29 // … so it looks like it's just not possible to implement both
30 // the generic iterable<uint> and iterable<A> for the type iterable<uint>.
31 // Is it okay if I just remove this test?
33 // but Niko responded:
34 // think it's fine to remove this test, just because it's old and cruft and not hard to reproduce.
35 // *However* it should eventually be possible to implement the same interface for the same type
36 // multiple times with different type parameters, it's just that our current trait implementation
37 // has accidental limitations.
39 // so I'm leaving it in.
40 // actually, it looks like this is related to bug #3429. I'll rename this bug.
42 // This test had to do with an outdated version of the iterable trait.
43 // However, the condition it was testing seemed complex enough to
44 // warrant still having a test, so I inlined the old definitions.
47 fn iter(&self, blk
: |A
|);
50 impl<A
> iterable
<A
> for '
static ||A
|| {
51 fn iter(&self, blk
: |A
|) { self(blk); }
54 impl iterable
<uint
> for '
static ||uint
|| {
55 fn iter(&self, blk
: |v
: uint
|) { self( |i| blk(i) ) }
58 fn filter
<A
,IA
:iterable
<A
>>(self: IA
, prd
: '
static |A
| -> bool
, blk
: |A
|) {
64 fn foldl
<A
,B
,IA
:iterable
<A
>>(self: IA
, b0
: B
, blk
: |B
, A
| -> B
) -> B
{
72 fn range(lo
: uint
, hi
: uint
, it
: |uint
|) {
81 let range
: '
static ||uint
|| = |a
| range(0u, 1000u, a
);
82 let filt
: '
static ||v
: uint
|| = |a
| filter(
84 |&&n
: uint
| n
% 3u != 0u && n
% 5u != 0u,
86 let sum
= foldl(filt
, 0u, |accum
, &&n
: uint
| accum
+ n
);