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83f06ca2
编写于
11月 30, 2017
作者:
P
Petr Onderka
浏览文件
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电子邮件补丁
差异文件
Simplified using directive comparer
上级
647e5814
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
35 addition
and
47 deletion
+35
-47
src/Workspaces/CSharp/Portable/Utilities/UsingsAndExternAliasesDirectiveComparer.cs
...able/Utilities/UsingsAndExternAliasesDirectiveComparer.cs
+35
-47
未找到文件。
src/Workspaces/CSharp/Portable/Utilities/UsingsAndExternAliasesDirectiveComparer.cs
浏览文件 @
83f06ca2
...
...
@@ -29,6 +29,31 @@ internal class UsingsAndExternAliasesDirectiveComparer : IComparer<SyntaxNode>
_tokenComparer
=
tokenComparer
;
}
private
enum
UsingKind
{
Extern
,
Namespace
,
UsingStatic
,
Alias
}
private
static
UsingKind
GetUsingKind
(
UsingDirectiveSyntax
usingDirective
,
ExternAliasDirectiveSyntax
externDirective
)
{
if
(
externDirective
!=
null
)
{
return
UsingKind
.
Extern
;
}
if
(
usingDirective
.
Alias
!=
null
)
{
return
UsingKind
.
Alias
;
}
if
(
usingDirective
.
StaticKeyword
.
IsKind
(
SyntaxKind
.
StaticKeyword
))
{
return
UsingKind
.
UsingStatic
;
}
return
UsingKind
.
Namespace
;
}
public
int
Compare
(
SyntaxNode
directive1
,
SyntaxNode
directive2
)
{
if
(
directive1
==
directive2
)
...
...
@@ -41,17 +66,8 @@ public int Compare(SyntaxNode directive1, SyntaxNode directive2)
var
extern1
=
directive1
as
ExternAliasDirectiveSyntax
;
var
extern2
=
directive2
as
ExternAliasDirectiveSyntax
;
var
directive1IsExtern
=
extern1
!=
null
;
var
directive2IsExtern
=
extern2
!=
null
;
var
directive1IsNamespace
=
using1
!=
null
&&
using1
.
Alias
==
null
&&
!
using1
.
StaticKeyword
.
IsKind
(
SyntaxKind
.
StaticKeyword
);
var
directive2IsNamespace
=
using2
!=
null
&&
using2
.
Alias
==
null
&&
!
using2
.
StaticKeyword
.
IsKind
(
SyntaxKind
.
StaticKeyword
);
var
directive1IsUsingStatic
=
using1
!=
null
&&
using1
.
StaticKeyword
.
IsKind
(
SyntaxKind
.
StaticKeyword
);
var
directive2IsUsingStatic
=
using2
!=
null
&&
using2
.
StaticKeyword
.
IsKind
(
SyntaxKind
.
StaticKeyword
);
var
directive1IsAlias
=
using1
!=
null
&&
using1
.
Alias
!=
null
;
var
directive2IsAlias
=
using2
!=
null
&&
using2
.
Alias
!=
null
;
var
directive1Kind
=
GetUsingKind
(
using1
,
extern1
);
var
directive2Kind
=
GetUsingKind
(
using2
,
extern2
);
// different types of usings get broken up into groups.
// * externs
...
...
@@ -59,46 +75,22 @@ public int Compare(SyntaxNode directive1, SyntaxNode directive2)
// * using statics
// * aliases
if
(
directive1
IsExtern
&&
!
directive2IsExtern
)
if
(
directive1
Kind
<
directive2Kind
)
{
return
-
1
;
}
else
if
(
directive2IsExtern
&&
!
directive1IsExtern
)
{
return
1
;
}
else
if
(
directive1IsNamespace
&&
!
directive2IsNamespace
)
{
return
-
1
;
}
else
if
(
directive2IsNamespace
&&
!
directive1IsNamespace
)
{
return
1
;
}
else
if
(
directive1IsUsingStatic
&&
!
directive2IsUsingStatic
)
{
return
-
1
;
}
else
if
(
directive2IsUsingStatic
&&
!
directive1IsUsingStatic
)
{
return
1
;
}
else
if
(
directive1IsAlias
&&
!
directive2IsAlias
)
{
return
-
1
;
}
else
if
(
directive2IsAlias
&&
!
directive1IsAlias
)
if
(
directive1Kind
>
directive2Kind
)
{
return
1
;
}
// ok, it's the same type of using now.
if
(
directive1
Is
Extern
)
if
(
directive1
Kind
==
UsingKind
.
Extern
)
{
// they're externs, sort by the alias
return
_tokenComparer
.
Compare
(
extern1
.
Identifier
,
extern2
.
Identifier
);
}
else
if
(
directive1Is
Alias
)
if
(
directive1Kind
==
UsingKind
.
Alias
)
{
var
aliasComparisonResult
=
_tokenComparer
.
Compare
(
using1
.
Alias
.
Name
.
Identifier
,
using2
.
Alias
.
Name
.
Identifier
);
...
...
@@ -107,15 +99,11 @@ public int Compare(SyntaxNode directive1, SyntaxNode directive2)
// They both use the same alias, so compare the names.
return
_nameComparer
.
Compare
(
using1
.
Name
,
using2
.
Name
);
}
else
{
return
aliasComparisonResult
;
}
}
else
{
return
_nameComparer
.
Compare
(
using1
.
Name
,
using2
.
Name
);
return
aliasComparisonResult
;
}
return
_nameComparer
.
Compare
(
using1
.
Name
,
using2
.
Name
);
}
}
}
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