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

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external/nrefactory/ICSharpCode.NRefactory.CSharp/Refactoring/CodeActions/InvertIfAction.cs
 
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// 
 
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// InvertIf.cs
 
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//  
 
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// Author:
 
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//       Mike Krüger <mkrueger@novell.com>
 
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// 
 
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// Copyright (c) 2011 Mike Krüger <mkrueger@novell.com>
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using System.Threading;
 
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using System.Collections.Generic;
 
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namespace ICSharpCode.NRefactory.CSharp.Refactoring
 
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{
 
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        [ContextAction("Invert if", Description = "Inverts an 'if ... else' expression.")]
 
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        public class InvertIfAction : ICodeActionProvider
 
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        {
 
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                public IEnumerable<CodeAction> GetActions(RefactoringContext context)
 
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                {
 
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                        // TODO: Invert if without else
 
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                        // ex. if (cond) DoSomething () == if (!cond) return; DoSomething ()
 
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                        // beware of loop contexts return should be continue then.
 
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                        var ifStatement = GetIfElseStatement(context);
 
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                        if (!(ifStatement != null && !ifStatement.TrueStatement.IsNull && !ifStatement.FalseStatement.IsNull)) {
 
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                                yield break;
 
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                        }
 
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                        yield return new CodeAction (context.TranslateString("Invert if"), script => {
 
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                                script.Replace(ifStatement.Condition, CSharpUtil.InvertCondition(ifStatement.Condition.Clone()));
 
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                                script.Replace(ifStatement.TrueStatement, ifStatement.FalseStatement.Clone());
 
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                                script.Replace(ifStatement.FalseStatement, ifStatement.TrueStatement.Clone());
 
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                                script.FormatText(ifStatement);
 
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                        }, ifStatement);
 
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                }
 
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                static IfElseStatement GetIfElseStatement (RefactoringContext context)
 
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                {
 
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                        var result = context.GetNode<IfElseStatement> ();
 
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                        if (result != null && result.IfToken.Contains (context.Location))
 
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                                return result;
 
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                        return null;
 
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                }
 
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        }
 
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}