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15547e1d
编写于
10月 27, 2014
作者:
A
Alex Crichton
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差异文件
rollup merge of #18346 : aochagavia/closure-fields
上级
cfeff3e1
2ce77b33
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
40 addition
and
1 deletion
+40
-1
src/librustc/middle/typeck/check/method.rs
src/librustc/middle/typeck/check/method.rs
+21
-1
src/test/compile-fail/issue-18343.rs
src/test/compile-fail/issue-18343.rs
+19
-0
未找到文件。
src/librustc/middle/typeck/check/method.rs
浏览文件 @
15547e1d
...
...
@@ -223,17 +223,37 @@ pub fn report_error(fcx: &FnCtxt,
{
match
error
{
NoMatch
(
static_sources
)
=>
{
let
cx
=
fcx
.tcx
();
let
method_ustring
=
method_name
.user_string
(
cx
);
// True if the type is a struct and contains a field with
// the same name as the not-found method
let
is_field
=
match
ty
::
get
(
rcvr_ty
)
.sty
{
ty_struct
(
did
,
_
)
=>
ty
::
lookup_struct_fields
(
cx
,
did
)
.iter
()
.any
(|
f
|
f
.name
.user_string
(
cx
)
==
method_ustring
),
_
=>
false
};
fcx
.type_error_message
(
span
,
|
actual
|
{
format!
(
"type `{}` does not implement any
\
method in scope named `{}`"
,
actual
,
method_
name
.user_string
(
fcx
.tcx
())
)
method_
ustring
)
},
rcvr_ty
,
None
);
// If the method has the name of a field, give a help note
if
is_field
{
cx
.sess
.span_note
(
span
,
format!
(
"use `(s.{0})(...)` if you meant to call the
\
function stored in the `{0}` field"
,
method_ustring
)
.as_slice
());
}
if
static_sources
.len
()
>
0
{
fcx
.tcx
()
.sess
.fileline_note
(
span
,
...
...
src/test/compile-fail/issue-18343.rs
0 → 100644
浏览文件 @
15547e1d
// 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.
struct
Obj
<
'a
>
{
closure
:
||:
'a
->
u32
}
fn
main
()
{
let
o
=
Obj
{
closure
:
||
42
};
o
.closure
();
//~ ERROR type `Obj<'_>` does not implement any method in scope named `closure`
//~^ NOTE use `(s.closure)(...)` if you meant to call the function stored in the `closure` field
}
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