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70 lines
2.4 KiB
70 lines
2.4 KiB
// |
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// RedundantCaseLabelIssue.cs |
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// |
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// Author: |
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// Mansheng Yang <lightyang0@gmail.com> |
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// |
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// Copyright (c) 2012 Mansheng Yang <lightyang0@gmail.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.Collections.Generic; |
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namespace ICSharpCode.NRefactory.CSharp.Refactoring |
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{ |
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[IssueDescription ("Redundant 'case' label", |
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Description = "Redundant 'case' label", |
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Category = IssueCategories.Redundancies, |
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Severity = Severity.Warning, |
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IssueMarker = IssueMarker.GrayOut)] |
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public class RedundantCaseLabelIssue : ICodeIssueProvider |
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{ |
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public IEnumerable<CodeIssue> GetIssues (BaseRefactoringContext context) |
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{ |
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return new GatherVisitor (context).GetIssues (); |
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} |
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class GatherVisitor : GatherVisitorBase |
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{ |
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public GatherVisitor(BaseRefactoringContext ctx) |
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: base (ctx) |
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{ |
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} |
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public override void VisitSwitchSection (SwitchSection switchSection) |
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{ |
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base.VisitSwitchSection (switchSection); |
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if (switchSection.CaseLabels.Count <2) |
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return; |
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var lastLabel = switchSection.CaseLabels.LastOrNullObject (); |
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if (!lastLabel.Expression.IsNull) |
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return; |
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AddIssue (switchSection.FirstChild.StartLocation, lastLabel.StartLocation, |
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ctx.TranslateString ("Remove redundant 'case' label"), scipt => { |
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foreach (var label in switchSection.CaseLabels) { |
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if (label != lastLabel) |
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scipt.Remove (label); |
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} |
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}); |
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} |
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} |
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} |
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}
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