← Back to branch summary

~ubuntu-branches/ubuntu/trusty/monodevelop/trusty-proposed

« back to all changes in this revision

Viewing changes to external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/SplitDeclarationAndAssignmentAction.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

Show diffs side-by-side

added added

removed removed

Lines of Context:
external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/SplitDeclarationAndAssignmentAction.cs
 
1
// 
 
2
// SplitDeclarationAndAssignment.cs
 
3
//  
 
4
// Author:
 
5
//       Mike Krüger <mkrueger@novell.com>
 
6
// 
 
7
// Copyright (c) 2011 Mike Krüger <mkrueger@novell.com>
 
8
// 
 
9
// Permission is hereby granted, free of charge, to any person obtaining a copy
 
10
// of this software and associated documentation files (the "Software"), to deal
 
11
// in the Software without restriction, including without limitation the rights
 
12
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
13
// copies of the Software, and to permit persons to whom the Software is
 
14
// furnished to do so, subject to the following conditions:
 
15
// 
 
16
// The above copyright notice and this permission notice shall be included in
 
17
// all copies or substantial portions of the Software.
 
18
// 
 
19
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
20
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
21
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
22
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
23
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
24
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
25
// THE SOFTWARE.
 
26
using System;
 
27
using System.Linq;
 
28
using ICSharpCode.NRefactory.PatternMatching;
 
29
using System.Threading;
 
30
using System.Collections.Generic;
 
31
using ICSharpCode.NRefactory.TypeSystem;
 
32
 
 
33
namespace ICSharpCode.NRefactory.CSharp.Refactoring
 
34
{
 
35
        [ContextAction("Split local variable declaration and assignment", Description = "Splits local variable declaration and assignment.")]
 
36
        public class SplitDeclarationAndAssignmentAction : ICodeActionProvider
 
37
        {
 
38
                public IEnumerable<CodeAction> GetActions(RefactoringContext context)
 
39
                {
 
40
                        if (context.IsSomethingSelected) {
 
41
                                yield break;
 
42
                        }
 
43
                        AstType type;
 
44
                        var varDecl = GetVariableDeclarationStatement(context, out type);
 
45
                        if (varDecl == null) {
 
46
                                yield break;
 
47
                        }
 
48
                        yield return new CodeAction(context.TranslateString("Split local variable declaration and assignment"), script => {
 
49
                                var assign = new AssignmentExpression (new IdentifierExpression (varDecl.Variables.First().Name), AssignmentOperatorType.Assign, varDecl.Variables.First().Initializer.Clone());
 
50
                                
 
51
                                var newVarDecl = (VariableDeclarationStatement)varDecl.Clone();
 
52
                                newVarDecl.Role = BlockStatement.StatementRole;
 
53
                                
 
54
                                if (newVarDecl.Type.IsMatch(new SimpleType ("var"))) {
 
55
                                        newVarDecl.Type = type;
 
56
                                }
 
57
                                
 
58
                                newVarDecl.Variables.First().Initializer = Expression.Null;
 
59
                                
 
60
                                script.InsertBefore(varDecl, newVarDecl);
 
61
                                script.Replace(varDecl, varDecl.Parent is ForStatement ? (AstNode)assign : new ExpressionStatement (assign));
 
62
                        }, varDecl.Variables.First ().AssignToken);
 
63
                }
 
64
                
 
65
                static VariableDeclarationStatement GetVariableDeclarationStatement (RefactoringContext context, out AstType resolvedType, CancellationToken cancellationToken = default(CancellationToken))
 
66
                {
 
67
                        var result = context.GetNode<VariableDeclarationStatement> ();
 
68
                        if (result != null && result.Variables.Count == 1 && !result.Variables.First ().Initializer.IsNull && result.Variables.First ().NameToken.Contains (context.Location.Line, context.Location.Column)) {
 
69
                                var type = context.Resolve(result.Variables.First ().Initializer).Type;
 
70
                                if (type.Equals(SpecialType.NullType) || type.Equals(SpecialType.UnknownType)) {
 
71
                                        resolvedType = new PrimitiveType ("object");
 
72
                                } else {
 
73
                                        resolvedType = context.CreateShortType (type);
 
74
                                }
 
75
                                return result;
 
76
                        }
 
77
                        resolvedType = null;
 
78
                        return null;
 
79
                }
 
80
        }
 
81
}
 
82