diff --git a/ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj b/ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj
index d6ad2c09c8..873f9d308d 100644
--- a/ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj
+++ b/ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj
@@ -302,6 +302,7 @@
+
diff --git a/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs
new file mode 100644
index 0000000000..dd82e8e3a3
--- /dev/null
+++ b/ICSharpCode.NRefactory.CSharp/Refactoring/CodeIssues/RedundantCaseLabelIssue.cs
@@ -0,0 +1,71 @@
+//
+// RedundantCaseLabelIssue.cs
+//
+// Author:
+// Mansheng Yang
+//
+// Copyright (c) 2012 Mansheng Yang
+//
+// 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.Collections.Generic;
+using System.Linq;
+
+namespace ICSharpCode.NRefactory.CSharp.Refactoring
+{
+ [IssueDescription ("Redundant 'case' label",
+ Description = "Redundant 'case' label",
+ Category = IssueCategories.Redundancies,
+ Severity = Severity.Warning,
+ IssueMarker = IssueMarker.GrayOut)]
+ public class RedundantCaseLabelIssue : ICodeIssueProvider
+ {
+ public IEnumerable GetIssues (BaseRefactoringContext context)
+ {
+ return new GatherVisitor (context).GetIssues ();
+ }
+
+ class GatherVisitor : GatherVisitorBase
+ {
+ public GatherVisitor(BaseRefactoringContext ctx)
+ : base (ctx)
+ {
+ }
+
+ public override void VisitSwitchSection (SwitchSection switchSection)
+ {
+ base.VisitSwitchSection (switchSection);
+
+ if (switchSection.CaseLabels.Count <2)
+ return;
+
+ var lastLabel = switchSection.CaseLabels.LastOrNullObject ();
+ if (!lastLabel.Expression.IsNull)
+ return;
+ AddIssue (switchSection.FirstChild.StartLocation, lastLabel.StartLocation,
+ ctx.TranslateString ("Remove redundant 'case' label"), scipt => {
+ foreach (var label in switchSection.CaseLabels) {
+ if (label != lastLabel)
+ scipt.Remove (label);
+ }
+ });
+ }
+ }
+ }
+}
diff --git a/ICSharpCode.NRefactory.Tests/CSharp/CodeIssues/RedundantCaseLabelIssueTests.cs b/ICSharpCode.NRefactory.Tests/CSharp/CodeIssues/RedundantCaseLabelIssueTests.cs
new file mode 100644
index 0000000000..9db0f522be
--- /dev/null
+++ b/ICSharpCode.NRefactory.Tests/CSharp/CodeIssues/RedundantCaseLabelIssueTests.cs
@@ -0,0 +1,65 @@
+//
+// RedundantCaseLabelIssueTests.cs
+//
+// Author:
+// Mansheng Yang
+//
+// Copyright (c) 2012 Mansheng Yang
+//
+// 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 ICSharpCode.NRefactory.CSharp.Refactoring;
+using NUnit.Framework;
+
+namespace ICSharpCode.NRefactory.CSharp.CodeIssues
+{
+ [TestFixture]
+ public class RedundantCaseLabelIssueTests : InspectionActionTestBase
+ {
+ [Test]
+ public void Test ()
+ {
+ var input = @"
+class TestClass
+{
+ void TestMethod (int i)
+ {
+ switch (i) {
+ case 1:
+ case 2:
+ default:
+ break;
+ }
+ }
+}";
+ var output = @"
+class TestClass
+{
+ void TestMethod (int i)
+ {
+ switch (i) {
+ default:
+ break;
+ }
+ }
+}";
+ Test (input, 1, output);
+ }
+ }
+}
diff --git a/ICSharpCode.NRefactory.Tests/ICSharpCode.NRefactory.Tests.csproj b/ICSharpCode.NRefactory.Tests/ICSharpCode.NRefactory.Tests.csproj
index f0a1dbb0e6..1c46858a57 100644
--- a/ICSharpCode.NRefactory.Tests/ICSharpCode.NRefactory.Tests.csproj
+++ b/ICSharpCode.NRefactory.Tests/ICSharpCode.NRefactory.Tests.csproj
@@ -120,6 +120,7 @@
+