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体验新版 GitCode,发现更多精彩内容 >>
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bf249b44
编写于
5月 12, 2014
作者:
P
Patrick Walton
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
libhexfloat: Remove all uses of `~str` from `libhexfloat`
上级
27977e41
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
17 addition
and
8 deletion
+17
-8
src/libhexfloat/lib.rs
src/libhexfloat/lib.rs
+17
-8
未找到文件。
src/libhexfloat/lib.rs
浏览文件 @
bf249b44
...
...
@@ -70,30 +70,39 @@ pub fn macro_registrar(register: |Name, SyntaxExtension|) {
//Check if the literal is valid (as LLVM expects),
//and return a descriptive error if not.
fn
hex_float_lit_err
(
s
:
&
str
)
->
Option
<
(
uint
,
~
str
)
>
{
fn
hex_float_lit_err
(
s
:
&
str
)
->
Option
<
(
uint
,
StrBuf
)
>
{
let
mut
chars
=
s
.chars
()
.peekable
();
let
mut
i
=
0
;
if
chars
.peek
()
==
Some
(
&
'-'
)
{
chars
.next
();
i
+=
1
}
if
chars
.next
()
!=
Some
(
'0'
)
{
return
Some
((
i
,
"Expected '0'"
.to_owned
()));
}
i
+=
1
;
if
chars
.next
()
!=
Some
(
'x'
)
{
return
Some
((
i
,
"Expected 'x'"
.to_owned
()));
}
i
+=
1
;
if
chars
.next
()
!=
Some
(
'0'
)
{
return
Some
((
i
,
"Expected '0'"
.to_strbuf
()));
}
i
+=
1
;
if
chars
.next
()
!=
Some
(
'x'
)
{
return
Some
((
i
,
"Expected 'x'"
.to_strbuf
()));
}
i
+=
1
;
let
mut
d_len
=
0
;
for
_
in
chars
.take_while
(|
c
|
c
.is_digit_radix
(
16
))
{
chars
.next
();
i
+=
1
;
d_len
+=
1
;}
if
chars
.next
()
!=
Some
(
'.'
)
{
return
Some
((
i
,
"Expected '.'"
.to_owned
()));
}
i
+=
1
;
if
chars
.next
()
!=
Some
(
'.'
)
{
return
Some
((
i
,
"Expected '.'"
.to_strbuf
()));
}
i
+=
1
;
let
mut
f_len
=
0
;
for
_
in
chars
.take_while
(|
c
|
c
.is_digit_radix
(
16
))
{
chars
.next
();
i
+=
1
;
f_len
+=
1
;}
if
d_len
==
0
&&
f_len
==
0
{
return
Some
((
i
,
"Expected digits before or after decimal point"
.to_owned
()));
return
Some
((
i
,
"Expected digits before or after decimal
\
point"
.to_strbuf
()));
}
if
chars
.next
()
!=
Some
(
'p'
)
{
return
Some
((
i
,
"Expected 'p'"
.to_owned
()));
}
i
+=
1
;
if
chars
.next
()
!=
Some
(
'p'
)
{
return
Some
((
i
,
"Expected 'p'"
.to_strbuf
()));
}
i
+=
1
;
if
chars
.peek
()
==
Some
(
&
'-'
)
{
chars
.next
();
i
+=
1
}
let
mut
e_len
=
0
;
for
_
in
chars
.take_while
(|
c
|
c
.is_digit
())
{
chars
.next
();
i
+=
1
;
e_len
+=
1
}
if
e_len
==
0
{
return
Some
((
i
,
"Expected exponent digits"
.to_
owned
()));
return
Some
((
i
,
"Expected exponent digits"
.to_
strbuf
()));
}
match
chars
.next
()
{
None
=>
None
,
Some
(
_
)
=>
Some
((
i
,
"Expected end of string"
.to_
owned
()))
Some
(
_
)
=>
Some
((
i
,
"Expected end of string"
.to_
strbuf
()))
}
}
...
...
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