1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
//
// UseVarKeyword.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (c) 2011 Mike Krüger <mkrueger@novell.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Linq;
using ICSharpCode.NRefactory.PatternMatching;
using System.Threading;
using System.Collections.Generic;
namespace ICSharpCode.NRefactory.CSharp.Refactoring
{
[ContextAction("Use 'var' keyword",
Description = "Converts local variable declaration to be implicit typed.",
BoundToIssue = typeof (ICSharpCode.NRefactory.CSharp.Refactoring.UseVarKeywordIssue))]
public class UseVarKeywordAction : ICodeActionProvider
{
public IEnumerable<CodeAction> GetActions(RefactoringContext context)
{
var varDecl = GetVariableDeclarationStatement(context);
var foreachStmt = GetForeachStatement(context);
if (varDecl == null && foreachStmt == null) {
yield break;
}
yield return new CodeAction(context.TranslateString("Use 'var' keyword"), script => {
if (varDecl != null) {
script.Replace(varDecl.Type, new SimpleType ("var"));
} else {
script.Replace(foreachStmt.VariableType, new SimpleType ("var"));
}
}, (AstNode)varDecl ?? foreachStmt);
}
static readonly AstType varType = new SimpleType ("var");
static VariableDeclarationStatement GetVariableDeclarationStatement (RefactoringContext context)
{
var result = context.GetNode<VariableDeclarationStatement> ();
if (result != null && result.Variables.Count == 1 && !result.Variables.First ().Initializer.IsNull && result.Type.Contains (context.Location) && !result.Type.IsMatch (varType))
return result;
return null;
}
static ForeachStatement GetForeachStatement (RefactoringContext context)
{
var result = context.GetNode<ForeachStatement> ();
if (result != null && result.VariableType.Contains (context.Location) && !result.VariableType.IsMatch (varType))
return result;
return null;
}
}
}
|