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Libraries
folly
Commits
427f1e4c
Commit
427f1e4c
authored
Apr 20, 2013
by
Tudor Bosman
Committed by
Sara Golemon
May 20, 2013
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Plain Diff
toAppendDelimited, toDelimited
Test Plan: test added Reviewed By: delong.j@fb.com FB internal diff: D783100
parent
99ed43a7
Changes
2
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-0
folly/Conv.h
folly/Conv.h
+44
-0
folly/test/ConvTest.cpp
folly/test/ConvTest.cpp
+21
-0
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folly/Conv.h
View file @
427f1e4c
...
@@ -476,6 +476,38 @@ typename std::enable_if<detail::IsSomeString<Tgt>::value>::type
...
@@ -476,6 +476,38 @@ typename std::enable_if<detail::IsSomeString<Tgt>::value>::type
toAppend
(
Tgt
*
result
)
{
toAppend
(
Tgt
*
result
)
{
}
}
/**
* Variadic base case: do nothing.
*/
template
<
class
Delimiter
,
class
Tgt
>
typename
std
::
enable_if
<
detail
::
IsSomeString
<
Tgt
>::
value
>::
type
toAppendDelim
(
const
Delimiter
&
delim
,
Tgt
*
result
)
{
}
/**
* 1 element: same as toAppend.
*/
template
<
class
Delimiter
,
class
T
,
class
Tgt
>
typename
std
::
enable_if
<
detail
::
IsSomeString
<
Tgt
>::
value
>::
type
toAppendDelim
(
const
Delimiter
&
delim
,
const
T
&
v
,
Tgt
*
tgt
)
{
toAppend
(
v
,
tgt
);
}
/**
* Append to string with a delimiter in between elements.
*/
template
<
class
Delimiter
,
class
T
,
class
...
Ts
>
typename
std
::
enable_if
<
sizeof
...(
Ts
)
>=
2
&&
detail
::
IsSomeString
<
typename
std
::
remove_pointer
<
typename
std
::
tuple_element
<
sizeof
...(
Ts
)
-
1
,
std
::
tuple
<
Ts
...
>
>::
type
>::
type
>::
value
>::
type
toAppendDelim
(
const
Delimiter
&
delim
,
const
T
&
v
,
const
Ts
&
...
vs
)
{
toAppend
(
v
,
delim
,
detail
::
getLastElement
(
vs
...));
toAppendDelim
(
delim
,
vs
...);
}
/**
/**
* to<SomeString>(v1, v2, ...) uses toAppend() (see below) as back-end
* to<SomeString>(v1, v2, ...) uses toAppend() (see below) as back-end
* for all types.
* for all types.
...
@@ -488,6 +520,18 @@ to(const Ts&... vs) {
...
@@ -488,6 +520,18 @@ to(const Ts&... vs) {
return
result
;
return
result
;
}
}
/**
* toDelim<SomeString>(delim, v1, v2, ...) uses toAppendDelim() as
* back-end for all types.
*/
template
<
class
Tgt
,
class
Delim
,
class
...
Ts
>
typename
std
::
enable_if
<
detail
::
IsSomeString
<
Tgt
>::
value
,
Tgt
>::
type
toDelim
(
const
Delim
&
delim
,
const
Ts
&
...
vs
)
{
Tgt
result
;
toAppendDelim
(
delim
,
vs
...,
&
result
);
return
result
;
}
/*******************************************************************************
/*******************************************************************************
* Conversions from string types to integral types.
* Conversions from string types to integral types.
******************************************************************************/
******************************************************************************/
...
...
folly/test/ConvTest.cpp
View file @
427f1e4c
...
@@ -403,6 +403,22 @@ void testVariadicTo() {
...
@@ -403,6 +403,22 @@ void testVariadicTo() {
EXPECT_EQ
(
s
,
"Lorem ipsum 1234 dolor amet 567.89."
);
EXPECT_EQ
(
s
,
"Lorem ipsum 1234 dolor amet 567.89."
);
}
}
template
<
class
String
>
void
testVariadicToDelim
()
{
String
s
;
toAppendDelim
(
":"
,
&
s
);
toAppendDelim
(
":"
,
"Lorem ipsum "
,
1234
,
String
(
" dolor amet "
),
567.89
,
'!'
,
&
s
);
EXPECT_EQ
(
s
,
"Lorem ipsum :1234: dolor amet :567.89:!"
);
s
=
toDelim
<
String
>
(
':'
);
EXPECT_TRUE
(
s
.
empty
());
s
=
toDelim
<
String
>
(
":"
,
"Lorem ipsum "
,
nullptr
,
1234
,
" dolor amet "
,
567.89
,
'.'
);
EXPECT_EQ
(
s
,
"Lorem ipsum ::1234: dolor amet :567.89:."
);
}
TEST
(
Conv
,
NullString
)
{
TEST
(
Conv
,
NullString
)
{
string
s1
=
to
<
string
>
((
char
*
)
NULL
);
string
s1
=
to
<
string
>
((
char
*
)
NULL
);
EXPECT_TRUE
(
s1
.
empty
());
EXPECT_TRUE
(
s1
.
empty
());
...
@@ -415,6 +431,11 @@ TEST(Conv, VariadicTo) {
...
@@ -415,6 +431,11 @@ TEST(Conv, VariadicTo) {
testVariadicTo
<
fbstring
>
();
testVariadicTo
<
fbstring
>
();
}
}
TEST
(
Conv
,
VariadicToDelim
)
{
testVariadicToDelim
<
string
>
();
testVariadicToDelim
<
fbstring
>
();
}
template
<
class
String
>
template
<
class
String
>
void
testDoubleToString
()
{
void
testDoubleToString
()
{
EXPECT_EQ
(
to
<
string
>
(
0.0
),
"0"
);
EXPECT_EQ
(
to
<
string
>
(
0.0
),
"0"
);
...
...
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