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体验新版 GitCode,发现更多精彩内容 >>
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bb39cc3a
编写于
11月 15, 2013
作者:
S
Steven Fackler
浏览文件
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电子邮件补丁
差异文件
Make MutRef more consistent with &mut
上级
2e4bb2b9
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
9 addition
and
9 deletion
+9
-9
src/libstd/mutable.rs
src/libstd/mutable.rs
+9
-9
未找到文件。
src/libstd/mutable.rs
浏览文件 @
bb39cc3a
...
...
@@ -82,16 +82,16 @@ pub fn borrow<'a>(&'a self) -> Ref<'a, T> {
/// Mutably borrows the wrapped value.
///
/// The borrow lasts untile the returned `
MutRef
` exits scope. The value
/// The borrow lasts untile the returned `
RefMut
` exits scope. The value
/// cannot be borrowed while this borrow is active.
///
/// Returns `None` if the value is currently borrowed.
pub
fn
try_borrow_mut
<
'a
>
(
&
'a
self
)
->
Option
<
MutRef
<
'a
,
T
>>
{
pub
fn
try_borrow_mut
<
'a
>
(
&
'a
self
)
->
Option
<
RefMut
<
'a
,
T
>>
{
match
self
.borrow
{
UNUSED
=>
unsafe
{
let
mut_self
=
self
.as_mut
();
mut_self
.borrow
=
WRITING
;
Some
(
MutRef
{
parent
:
mut_self
})
Some
(
RefMut
{
parent
:
mut_self
})
},
_
=>
None
}
...
...
@@ -99,13 +99,13 @@ pub fn try_borrow_mut<'a>(&'a self) -> Option<MutRef<'a, T>> {
/// Mutably borrows the wrapped value.
///
/// The borrow lasts untile the returned `
MutRef
` exits scope. The value
/// The borrow lasts untile the returned `
RefMut
` exits scope. The value
/// cannot be borrowed while this borrow is active.
///
/// # Failure
///
/// Fails if the value is currently borrowed.
pub
fn
borrow_mut
<
'a
>
(
&
'a
self
)
->
MutRef
<
'a
,
T
>
{
pub
fn
borrow_mut
<
'a
>
(
&
'a
self
)
->
RefMut
<
'a
,
T
>
{
match
self
.try_borrow_mut
()
{
Some
(
ptr
)
=>
ptr
,
None
=>
fail
!
(
"Mut<T> already borrowed"
)
...
...
@@ -179,19 +179,19 @@ pub fn get<'a>(&'a self) -> &'a T {
}
/// Wraps a mutable borrowed reference to a value in a `Mut` box.
pub
struct
MutRef
<
'box
,
T
>
{
pub
struct
RefMut
<
'box
,
T
>
{
priv
parent
:
&
'box
mut
Mut
<
T
>
}
#[unsafe_destructor]
impl
<
'box
,
T
>
Drop
for
MutRef
<
'box
,
T
>
{
impl
<
'box
,
T
>
Drop
for
RefMut
<
'box
,
T
>
{
fn
drop
(
&
mut
self
)
{
assert
!
(
self
.parent.borrow
==
WRITING
);
unsafe
{
self
.parent
.as_mut
()
.borrow
=
UNUSED
;
}
self
.parent.borrow
=
UNUSED
;
}
}
impl
<
'box
,
T
>
MutRef
<
'box
,
T
>
{
impl
<
'box
,
T
>
RefMut
<
'box
,
T
>
{
/// Retrieve a mutable reference to the stored value.
#[inline]
pub
fn
get
<
'a
>
(
&
'a
mut
self
)
->
&
'a
mut
T
{
...
...
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