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456a68c5
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Third Party Harfbuzz
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456a68c5
编写于
10月 07, 2018
作者:
B
Behdad Esfahbod
浏览文件
操作
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电子邮件补丁
差异文件
Move code
上级
3515c8b1
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
104 addition
and
106 deletion
+104
-106
src/hb-aat-layout-common.hh
src/hb-aat-layout-common.hh
+0
-105
src/hb-open-type.hh
src/hb-open-type.hh
+104
-1
未找到文件。
src/hb-aat-layout-common.hh
浏览文件 @
456a68c5
...
...
@@ -35,111 +35,6 @@ namespace AAT {
using
namespace
OT
;
/*
* Binary Searching Tables
*/
struct
VarSizedBinSearchHeader
{
inline
bool
sanitize
(
hb_sanitize_context_t
*
c
)
const
{
TRACE_SANITIZE
(
this
);
return_trace
(
c
->
check_struct
(
this
));
}
HBUINT16
unitSize
;
/* Size of a lookup unit for this search in bytes. */
HBUINT16
nUnits
;
/* Number of units of the preceding size to be searched. */
HBUINT16
searchRange
;
/* The value of unitSize times the largest power of 2
* that is less than or equal to the value of nUnits. */
HBUINT16
entrySelector
;
/* The log base 2 of the largest power of 2 less than
* or equal to the value of nUnits. */
HBUINT16
rangeShift
;
/* The value of unitSize times the difference of the
* value of nUnits minus the largest power of 2 less
* than or equal to the value of nUnits. */
public:
DEFINE_SIZE_STATIC
(
10
);
};
template
<
typename
Type
>
struct
VarSizedBinSearchArrayOf
{
inline
const
Type
&
operator
[]
(
unsigned
int
i
)
const
{
if
(
unlikely
(
i
>=
header
.
nUnits
))
return
Null
(
Type
);
return
StructAtOffset
<
Type
>
(
&
bytesZ
,
i
*
header
.
unitSize
);
}
inline
Type
&
operator
[]
(
unsigned
int
i
)
{
return
StructAtOffset
<
Type
>
(
&
bytesZ
,
i
*
header
.
unitSize
);
}
inline
unsigned
int
get_size
(
void
)
const
{
return
header
.
static_size
+
header
.
nUnits
*
header
.
unitSize
;
}
inline
bool
sanitize
(
hb_sanitize_context_t
*
c
)
const
{
TRACE_SANITIZE
(
this
);
if
(
unlikely
(
!
sanitize_shallow
(
c
)))
return_trace
(
false
);
/* Note: for structs that do not reference other structs,
* we do not need to call their sanitize() as we already did
* a bound check on the aggregate array size. We just include
* a small unreachable expression to make sure the structs
* pointed to do have a simple sanitize(), ie. they do not
* reference other structs via offsets.
*/
(
void
)
(
false
&&
StructAtOffset
<
Type
>
(
&
bytesZ
,
0
).
sanitize
(
c
));
return_trace
(
true
);
}
inline
bool
sanitize
(
hb_sanitize_context_t
*
c
,
const
void
*
base
)
const
{
TRACE_SANITIZE
(
this
);
if
(
unlikely
(
!
sanitize_shallow
(
c
)))
return_trace
(
false
);
unsigned
int
count
=
header
.
nUnits
;
for
(
unsigned
int
i
=
0
;
i
<
count
;
i
++
)
if
(
unlikely
(
!
(
*
this
)[
i
].
sanitize
(
c
,
base
)))
return_trace
(
false
);
return_trace
(
true
);
}
template
<
typename
T
>
inline
const
Type
*
bsearch
(
const
T
&
key
)
const
{
unsigned
int
size
=
header
.
unitSize
;
int
min
=
0
,
max
=
(
int
)
header
.
nUnits
-
1
;
while
(
min
<=
max
)
{
int
mid
=
(
min
+
max
)
/
2
;
const
Type
*
p
=
(
const
Type
*
)
(((
const
char
*
)
&
bytesZ
)
+
(
mid
*
size
));
int
c
=
p
->
cmp
(
key
);
if
(
c
<
0
)
max
=
mid
-
1
;
else
if
(
c
>
0
)
min
=
mid
+
1
;
else
return
p
;
}
return
nullptr
;
}
private:
inline
bool
sanitize_shallow
(
hb_sanitize_context_t
*
c
)
const
{
TRACE_SANITIZE
(
this
);
return_trace
(
header
.
sanitize
(
c
)
&&
Type
::
static_size
>=
header
.
unitSize
&&
c
->
check_array
(
bytesZ
.
arrayZ
,
header
.
nUnits
,
header
.
unitSize
));
}
protected:
VarSizedBinSearchHeader
header
;
UnsizedArrayOf
<
HBUINT8
>
bytesZ
;
public:
DEFINE_SIZE_ARRAY
(
10
,
bytesZ
);
};
/*
* Lookup Table
*/
...
...
src/hb-open-type.hh
浏览文件 @
456a68c5
...
...
@@ -702,7 +702,10 @@ struct SortedArrayOf : ArrayOf<Type, LenType>
}
};
/* Binary-search arrays */
/*
* Binary-search arrays
*/
struct
BinSearchHeader
{
inline
operator
uint32_t
(
void
)
const
{
return
len
;
}
...
...
@@ -737,6 +740,106 @@ struct BinSearchHeader
template
<
typename
Type
>
struct
BinSearchArrayOf
:
SortedArrayOf
<
Type
,
BinSearchHeader
>
{};
struct
VarSizedBinSearchHeader
{
inline
bool
sanitize
(
hb_sanitize_context_t
*
c
)
const
{
TRACE_SANITIZE
(
this
);
return_trace
(
c
->
check_struct
(
this
));
}
HBUINT16
unitSize
;
/* Size of a lookup unit for this search in bytes. */
HBUINT16
nUnits
;
/* Number of units of the preceding size to be searched. */
HBUINT16
searchRange
;
/* The value of unitSize times the largest power of 2
* that is less than or equal to the value of nUnits. */
HBUINT16
entrySelector
;
/* The log base 2 of the largest power of 2 less than
* or equal to the value of nUnits. */
HBUINT16
rangeShift
;
/* The value of unitSize times the difference of the
* value of nUnits minus the largest power of 2 less
* than or equal to the value of nUnits. */
public:
DEFINE_SIZE_STATIC
(
10
);
};
template
<
typename
Type
>
struct
VarSizedBinSearchArrayOf
{
inline
const
Type
&
operator
[]
(
unsigned
int
i
)
const
{
if
(
unlikely
(
i
>=
header
.
nUnits
))
return
Null
(
Type
);
return
StructAtOffset
<
Type
>
(
&
bytesZ
,
i
*
header
.
unitSize
);
}
inline
Type
&
operator
[]
(
unsigned
int
i
)
{
return
StructAtOffset
<
Type
>
(
&
bytesZ
,
i
*
header
.
unitSize
);
}
inline
unsigned
int
get_size
(
void
)
const
{
return
header
.
static_size
+
header
.
nUnits
*
header
.
unitSize
;
}
inline
bool
sanitize
(
hb_sanitize_context_t
*
c
)
const
{
TRACE_SANITIZE
(
this
);
if
(
unlikely
(
!
sanitize_shallow
(
c
)))
return_trace
(
false
);
/* Note: for structs that do not reference other structs,
* we do not need to call their sanitize() as we already did
* a bound check on the aggregate array size. We just include
* a small unreachable expression to make sure the structs
* pointed to do have a simple sanitize(), ie. they do not
* reference other structs via offsets.
*/
(
void
)
(
false
&&
StructAtOffset
<
Type
>
(
&
bytesZ
,
0
).
sanitize
(
c
));
return_trace
(
true
);
}
inline
bool
sanitize
(
hb_sanitize_context_t
*
c
,
const
void
*
base
)
const
{
TRACE_SANITIZE
(
this
);
if
(
unlikely
(
!
sanitize_shallow
(
c
)))
return_trace
(
false
);
unsigned
int
count
=
header
.
nUnits
;
for
(
unsigned
int
i
=
0
;
i
<
count
;
i
++
)
if
(
unlikely
(
!
(
*
this
)[
i
].
sanitize
(
c
,
base
)))
return_trace
(
false
);
return_trace
(
true
);
}
template
<
typename
T
>
inline
const
Type
*
bsearch
(
const
T
&
key
)
const
{
unsigned
int
size
=
header
.
unitSize
;
int
min
=
0
,
max
=
(
int
)
header
.
nUnits
-
1
;
while
(
min
<=
max
)
{
int
mid
=
(
min
+
max
)
/
2
;
const
Type
*
p
=
(
const
Type
*
)
(((
const
char
*
)
&
bytesZ
)
+
(
mid
*
size
));
int
c
=
p
->
cmp
(
key
);
if
(
c
<
0
)
max
=
mid
-
1
;
else
if
(
c
>
0
)
min
=
mid
+
1
;
else
return
p
;
}
return
nullptr
;
}
private:
inline
bool
sanitize_shallow
(
hb_sanitize_context_t
*
c
)
const
{
TRACE_SANITIZE
(
this
);
return_trace
(
header
.
sanitize
(
c
)
&&
Type
::
static_size
>=
header
.
unitSize
&&
c
->
check_array
(
bytesZ
.
arrayZ
,
header
.
nUnits
,
header
.
unitSize
));
}
protected:
VarSizedBinSearchHeader
header
;
UnsizedArrayOf
<
HBUINT8
>
bytesZ
;
public:
DEFINE_SIZE_ARRAY
(
10
,
bytesZ
);
};
}
/* namespace OT */
...
...
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