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体验新版 GitCode,发现更多精彩内容 >>
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4cb0c653
编写于
1月 09, 2020
作者:
A
Alexandru Dima
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差异文件
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3d2581a5
变更
1
隐藏空白更改
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并排
Showing
1 changed file
with
77 addition
and
78 deletion
+77
-78
src/vs/editor/common/viewModel/characterHardWrappingLineMapper.ts
...ditor/common/viewModel/characterHardWrappingLineMapper.ts
+77
-78
未找到文件。
src/vs/editor/common/viewModel/characterHardWrappingLineMapper.ts
浏览文件 @
4cb0c653
...
...
@@ -81,103 +81,102 @@ export class CharacterHardWrappingLineMapperFactory implements ILineMapperFactor
finalize
:
()
=>
{
let
result
:
(
LineBreakingData
|
null
)[]
=
[];
for
(
let
i
=
0
,
len
=
requests
.
length
;
i
<
len
;
i
++
)
{
result
[
i
]
=
this
.
_createLineMapping
(
requests
[
i
],
previousBreakingData
[
i
],
tabSize
,
wrappingColumn
,
columnsForFullWidthChar
,
wrappingIndent
);
result
[
i
]
=
createLineMapping
(
this
.
classifier
,
previousBreakingData
[
i
],
requests
[
i
],
tabSize
,
wrappingColumn
,
columnsForFullWidthChar
,
wrappingIndent
);
}
return
result
;
}
};
}
}
private
_createLineMapping
(
lineText
:
string
,
previousBreakingData
:
LineBreakingData
|
null
,
tabSize
:
number
,
firstLineBreakingColumn
:
number
,
columnsForFullWidthChar
:
number
,
hardWrappingIndent
:
WrappingIndent
):
LineBreakingData
|
null
{
if
(
firstLineBreakingColumn
===
-
1
)
{
return
null
;
}
const
wrappedTextIndentLength
=
computeWrappedTextIndentLength
(
lineText
,
tabSize
,
firstLineBreakingColumn
,
columnsForFullWidthChar
,
hardWrappingIndent
);
const
wrappedLineBreakingColumn
=
firstLineBreakingColumn
-
wrappedTextIndentLength
;
const
classifier
=
this
.
classifier
;
let
breakingOffsets
:
number
[]
=
[];
let
breakingOffsetsVisibleColumn
:
number
[]
=
[];
let
breakingOffsetsCount
:
number
=
0
;
let
visibleColumn
=
0
;
let
breakOffset
=
0
;
let
breakOffsetVisibleColumn
=
0
;
const
len
=
lineText
.
length
;
const
len1
=
len
-
1
;
let
breakingColumn
=
firstLineBreakingColumn
;
let
prevCharCode
=
CharCode
.
Null
;
let
prevCharCodeClass
=
CharacterClass
.
NONE
;
let
charCode
=
CharCode
.
Null
;
let
charCodeClass
=
CharacterClass
.
NONE
;
let
nextCharCode
=
(
len
>
0
?
lineText
.
charCodeAt
(
0
)
:
CharCode
.
Null
);
let
nextCharCodeClass
=
classifier
.
get
(
nextCharCode
);
for
(
let
i
=
0
;
i
<
len
;
i
++
)
{
// At this point, there is a certainty that the character before `i` fits on the current line,
// but the character at `i` might not fit
prevCharCode
=
charCode
;
prevCharCodeClass
=
charCodeClass
;
charCode
=
nextCharCode
;
charCodeClass
=
nextCharCodeClass
;
nextCharCode
=
(
i
<
len1
?
lineText
.
charCodeAt
(
i
+
1
)
:
CharCode
.
Null
);
nextCharCodeClass
=
classifier
.
get
(
nextCharCode
);
if
(
strings
.
isLowSurrogate
(
charCode
))
{
// A surrogate pair must always be considered as a single unit, so it is never to be broken
visibleColumn
+=
1
;
continue
;
}
function
createLineMapping
(
classifier
:
WrappingCharacterClassifier
,
previousBreakingData
:
LineBreakingData
|
null
,
lineText
:
string
,
tabSize
:
number
,
firstLineBreakingColumn
:
number
,
columnsForFullWidthChar
:
number
,
hardWrappingIndent
:
WrappingIndent
):
LineBreakingData
|
null
{
if
(
firstLineBreakingColumn
===
-
1
)
{
return
null
;
}
if
(
prevCharCode
!==
CharCode
.
Null
&&
canBreakBefore
(
charCodeClass
,
prevCharCodeClass
))
{
breakOffset
=
i
;
breakOffsetVisibleColumn
=
visibleColumn
;
}
const
wrappedTextIndentLength
=
computeWrappedTextIndentLength
(
lineText
,
tabSize
,
firstLineBreakingColumn
,
columnsForFullWidthChar
,
hardWrappingIndent
);
const
wrappedLineBreakingColumn
=
firstLineBreakingColumn
-
wrappedTextIndentLength
;
let
breakingOffsets
:
number
[]
=
[];
let
breakingOffsetsVisibleColumn
:
number
[]
=
[];
let
breakingOffsetsCount
:
number
=
0
;
let
visibleColumn
=
0
;
let
breakOffset
=
0
;
let
breakOffsetVisibleColumn
=
0
;
const
len
=
lineText
.
length
;
const
len1
=
len
-
1
;
let
breakingColumn
=
firstLineBreakingColumn
;
let
prevCharCode
=
CharCode
.
Null
;
let
prevCharCodeClass
=
CharacterClass
.
NONE
;
let
charCode
=
CharCode
.
Null
;
let
charCodeClass
=
CharacterClass
.
NONE
;
let
nextCharCode
=
(
len
>
0
?
lineText
.
charCodeAt
(
0
)
:
CharCode
.
Null
);
let
nextCharCodeClass
=
classifier
.
get
(
nextCharCode
);
for
(
let
i
=
0
;
i
<
len
;
i
++
)
{
// At this point, there is a certainty that the character before `i` fits on the current line,
// but the character at `i` might not fit
prevCharCode
=
charCode
;
prevCharCodeClass
=
charCodeClass
;
charCode
=
nextCharCode
;
charCodeClass
=
nextCharCodeClass
;
nextCharCode
=
(
i
<
len1
?
lineText
.
charCodeAt
(
i
+
1
)
:
CharCode
.
Null
);
nextCharCodeClass
=
classifier
.
get
(
nextCharCode
);
if
(
strings
.
isLowSurrogate
(
charCode
))
{
// A surrogate pair must always be considered as a single unit, so it is never to be broken
visibleColumn
+=
1
;
continue
;
}
const
charColumnSize
=
(
charCode
===
CharCode
.
Tab
?
tabCharacterWidth
(
visibleColumn
,
tabSize
)
:
(
strings
.
isFullWidthCharacter
(
charCode
)
?
columnsForFullWidthChar
:
1
)
);
if
(
prevCharCode
!==
CharCode
.
Null
&&
canBreakBefore
(
charCodeClass
,
prevCharCodeClass
))
{
breakOffset
=
i
;
breakOffsetVisibleColumn
=
visibleColumn
;
}
visibleColumn
+=
charColumnSize
;
const
charColumnSize
=
(
charCode
===
CharCode
.
Tab
?
tabCharacterWidth
(
visibleColumn
,
tabSize
)
:
(
strings
.
isFullWidthCharacter
(
charCode
)
?
columnsForFullWidthChar
:
1
)
);
// check if adding character at `i` will go over the breaking column
if
(
visibleColumn
>
breakingColumn
&&
i
!==
0
)
{
// We need to break at least before character at `i`:
visibleColumn
+=
charColumnSize
;
if
(
breakOffset
===
0
||
visibleColumn
-
breakOffsetVisibleColumn
>
wrappedLineBreakingColumn
)
{
// Cannot break at `breakOffset`, must break at `i`
breakOffset
=
i
;
breakOffsetVisibleColumn
=
visibleColumn
-
charColumnSize
;
}
// check if adding character at `i` will go over the breaking column
if
(
visibleColumn
>
breakingColumn
&&
i
!==
0
)
{
// We need to break at least before character at `i`:
breakingOffsets
[
breakingOffsetsCount
]
=
breakOffset
;
breakingOffsetsVisibleColumn
[
breakingOffsetsCount
]
=
breakOffsetVisibleColumn
;
breakingOffsetsCount
++
;
breakingColumn
=
breakOffsetVisibleColumn
+
wrappedLineBreakingColumn
;
breakOffset
=
0
;
if
(
breakOffset
===
0
||
visibleColumn
-
breakOffsetVisibleColumn
>
wrappedLineBreakingColumn
)
{
// Cannot break at `breakOffset`, must break at `i`
breakOffset
=
i
;
breakOffsetVisibleColumn
=
visibleColumn
-
charColumnSize
;
}
// At this point, there is a certainty that the character at `i` fits on the current line
if
(
nextCharCode
!==
CharCode
.
Null
&&
canBreakAfter
(
charCodeClass
,
nextCharCodeClass
))
{
breakOffset
=
i
+
1
;
breakOffsetVisibleColumn
=
visible
Column
;
}
breakingOffsets
[
breakingOffsetsCount
]
=
breakOffset
;
breakingOffsetsVisibleColumn
[
breakingOffsetsCount
]
=
breakOffsetVisibleColumn
;
breakingOffsetsCount
++
;
breakingColumn
=
breakOffsetVisibleColumn
+
wrappedLineBreaking
Column
;
breakOffset
=
0
;
}
if
(
breakingOffsetsCount
===
0
)
{
return
null
;
// At this point, there is a certainty that the character at `i` fits on the current line
if
(
nextCharCode
!==
CharCode
.
Null
&&
canBreakAfter
(
charCodeClass
,
nextCharCodeClass
))
{
breakOffset
=
i
+
1
;
breakOffsetVisibleColumn
=
visibleColumn
;
}
}
// Add last segment
breakingOffsets
[
breakingOffsetsCount
]
=
len
;
breakingOffsetsVisibleColumn
[
breakingOffsetsCount
]
=
visibleColumn
;
return
new
LineBreakingData
(
breakingOffsets
,
breakingOffsetsVisibleColumn
,
wrappedTextIndentLength
);
if
(
breakingOffsetsCount
===
0
)
{
return
null
;
}
// Add last segment
breakingOffsets
[
breakingOffsetsCount
]
=
len
;
breakingOffsetsVisibleColumn
[
breakingOffsetsCount
]
=
visibleColumn
;
return
new
LineBreakingData
(
breakingOffsets
,
breakingOffsetsVisibleColumn
,
wrappedTextIndentLength
);
}
function
tabCharacterWidth
(
visibleColumn
:
number
,
tabSize
:
number
):
number
{
...
...
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