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222bff64
编写于
9月 14, 2015
作者:
D
Dustin Campbell
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电子邮件补丁
差异文件
Clean up C# extern alias completion provider
上级
a8ba6656
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
23 addition
and
13 deletion
+23
-13
src/Features/CSharp/Portable/Completion/CompletionProviders/ExternAliasCompletionProvider.cs
...tion/CompletionProviders/ExternAliasCompletionProvider.cs
+23
-13
未找到文件。
src/Features/CSharp/Portable/Completion/CompletionProviders/ExternAliasCompletionProvider.cs
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222bff64
// Copyright (c) Microsoft. All Rights Reserved. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
using
System.Collections.Generic
;
using
System.Linq
;
using
System.Threading
;
using
System.Threading.Tasks
;
using
Microsoft.CodeAnalysis.Completion
;
using
Microsoft.CodeAnalysis.Completion.Providers
;
using
Microsoft.CodeAnalysis.CSharp.Extensions
;
using
Microsoft.CodeAnalysis.CSharp.Syntax
;
using
Microsoft.CodeAnalysis.Options
;
...
...
@@ -15,23 +12,30 @@
namespace
Microsoft.CodeAnalysis.CSharp.Completion.Providers
{
internal
class
ExternAliasCompletionProvider
:
AbstractCompletion
Provider
internal
class
ExternAliasCompletionProvider
:
CompletionList
Provider
{
public
override
bool
IsTriggerCharacter
(
SourceText
text
,
int
characterPosition
,
OptionSet
options
)
{
return
CompletionUtilities
.
IsTriggerCharacter
(
text
,
characterPosition
,
options
);
}
p
rotected
override
async
Task
<
IEnumerable
<
CompletionItem
>>
GetItemsWorkerAsync
(
Document
document
,
int
position
,
CompletionTriggerInfo
triggerInfo
,
CancellationToken
cancellationToken
)
p
ublic
override
async
Task
ProduceCompletionListAsync
(
CompletionListContext
context
)
{
var
document
=
context
.
Document
;
var
position
=
context
.
Position
;
var
cancellationToken
=
context
.
CancellationToken
;
var
tree
=
await
document
.
GetSyntaxTreeAsync
(
cancellationToken
).
ConfigureAwait
(
false
);
if
(
tree
.
IsInNonUserCode
(
position
,
cancellationToken
))
{
return
null
;
return
;
}
var
targetToken
=
tree
.
FindTokenOnLeftOfPosition
(
position
,
cancellationToken
).
GetPreviousTokenIfTouchingWord
(
position
);
var
targetToken
=
tree
.
FindTokenOnLeftOfPosition
(
position
,
cancellationToken
)
.
GetPreviousTokenIfTouchingWord
(
position
);
if
(
targetToken
.
IsKind
(
SyntaxKind
.
AliasKeyword
)
&&
targetToken
.
Parent
.
IsKind
(
SyntaxKind
.
ExternAliasDirective
))
{
var
compilation
=
await
document
.
Project
.
GetCompilationAsync
(
cancellationToken
).
ConfigureAwait
(
false
);
...
...
@@ -40,16 +44,22 @@ protected override async Task<IEnumerable<CompletionItem>> GetItemsWorkerAsync(D
if
(
aliases
.
Any
())
{
var
root
=
await
tree
.
GetRootAsync
(
cancellationToken
).
ConfigureAwait
(
false
);
var
usedAliases
=
root
.
ChildNodes
().
OfType
<
ExternAliasDirectiveSyntax
>().
Where
(
e
=>
!
e
.
Identifier
.
IsMissing
).
Select
(
e
=>
e
.
Identifier
.
ValueText
);
var
usedAliases
=
root
.
ChildNodes
().
OfType
<
ExternAliasDirectiveSyntax
>()
.
Where
(
e
=>
!
e
.
Identifier
.
IsMissing
)
.
Select
(
e
=>
e
.
Identifier
.
ValueText
);
aliases
.
RemoveRange
(
usedAliases
);
aliases
.
Remove
(
MetadataReferenceProperties
.
GlobalAlias
);
var
textChangeSpan
=
CompletionUtilities
.
GetTextChangeSpan
(
await
document
.
GetTextAsync
(
cancellationToken
).
ConfigureAwait
(
false
),
position
);
return
aliases
.
Select
(
e
=>
new
CompletionItem
(
this
,
e
,
textChangeSpan
,
glyph
:
Glyph
.
Namespace
));
var
text
=
await
document
.
GetTextAsync
(
cancellationToken
).
ConfigureAwait
(
false
);
var
filterSpan
=
CompletionUtilities
.
GetTextChangeSpan
(
text
,
position
);
foreach
(
var
alias
in
aliases
)
{
context
.
AddItem
(
new
CompletionItem
(
this
,
alias
,
filterSpan
,
glyph
:
Glyph
.
Namespace
));
}
}
}
return
SpecializedCollections
.
EmptyEnumerable
<
CompletionItem
>();
}
}
}
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