Added switch context handling.

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs

@@ -422,7 +422,11 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 					var navigator = new NodeListResolveVisitorNavigator (nodes);
 					var visitor = new ResolveVisitor (csResolver, identifierStart.Item1, navigator);
 					visitor.Scan (identifierStart.Item3);
-					csResolver = visitor.GetResolverStateBefore (n);
+					try {
+						csResolver = visitor.GetResolverStateBefore (n);
+					} catch (Exception) {
+						csResolver = GetState ();
+					}
 					// add attribute properties.
 					if (n.Parent is ICSharpCode.NRefactory.CSharp.Attribute) {
 						var resolved = visitor.GetResolveResult (n.Parent);
@@ -556,7 +560,6 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 					wrapper.AddTypeParameter (p);
 				}
 			}
-			
 			Predicate<ITypeDefinition> typePred = null;
 			if (node is Attribute) {
 				var attribute = ctx.GetTypeDefinition ("System", "Attribute", 0, StringComparer.Ordinal);
@@ -574,10 +577,29 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				AddKeywords (wrapper, globalLevelKeywords);
 			}
 			
+			if (IsInSwitchContext(node)) {
+				wrapper.AddCustom ("case"); 
+				wrapper.AddCustom ("default"); 
+			}
+			
 			AddKeywords (wrapper, primitiveTypesKeywords);
 			wrapper.Result.AddRange (factory.CreateCodeTemplateCompletionData ());
 		}
-
+		
+		static bool IsInSwitchContext(AstNode node)
+		{
+			var n = node;
+			while (n != null && !(n is MemberDeclaration)) {
+				Console.WriteLine (n.GetType ());
+				if (n is SwitchStatement)
+					return true;
+				if (n is BlockStatement)
+					return false;
+				n = n.Parent;
+			}
+			return false;
+		}
+		
 		void AddTypesAndNamespaces (CompletionDataWrapper wrapper, CSharpResolver state, AstNode node, Predicate<ITypeDefinition> typePred = null, Predicate<IMember> memberPred = null)
 		{
 			var currentType = state.CurrentTypeDefinition ?? this.currentType;
@@ -1531,6 +1553,7 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 			}
 				
 			var baseUnit = ParseStub ("");
+			var tmpUnit = baseUnit;
 			AstNode expr = baseUnit.GetNodeAt<IdentifierExpression> (location.Line, location.Column - 1); 
 			if (expr == null)
 				expr = baseUnit.GetNodeAt<Attribute> (location.Line, location.Column - 1);
@@ -1545,6 +1568,11 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				expr = baseUnit.GetNodeAt<ArrayInitializerExpression> (location.Line, location.Column - 1); 
 			}
 			
+			// try statement
+			if (expr == null) {
+				expr = tmpUnit.GetNodeAt<Statement> (location.Line, location.Column - 1); 
+			}
+			
 			if (expr == null)
 				return null;
 			var member = Unit.GetNodeAt<AttributedNode> (memberLocation);
@@ -1740,7 +1768,12 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				var navigator = new NodeListResolveVisitorNavigator (new[] { node });
 				var visitor = new ResolveVisitor (state, CSharpParsedFile, navigator);
 				Unit.AcceptVisitor (visitor, null);
-				state = visitor.GetResolverStateBefore (node) ?? state;
+				try {
+					var newState = visitor.GetResolverStateBefore (node);
+					if (newState != null)
+						state = newState;
+				} catch (Exception) {
+				}
 			}
 			
 			return state;

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngineBase.cs

@@ -180,8 +180,6 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 					bool didAppendCatch = false;
 					while (o >= "try".Length) {
 						char ch = memberText[o];
-						Console.WriteLine (ch);
-						
 						if (!char.IsWhiteSpace (ch)) {
 							if (ch == 'y' && memberText[o - 1] == 'r' && memberText[o - 2] == 't') {
 								wrapper.Append ("} catch {}");

ICSharpCode.NRefactory.Tests/CSharp/CodeCompletion/KeywordTests.cs

@@ -0,0 +1,92 @@
+// 
+// KeywordTests.cs
+//  
+// Author:
+//       Mike Krüger <mkrueger@xamarin.com>
+// 
+// Copyright (c) 2011 Xamarin Inc.
+// 
+// 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 NUnit.Framework;
+
+namespace ICSharpCode.NRefactory.CSharp.CodeCompletion
+{
+	[TestFixture()]
+	public class KeywordTests : TestBase
+	{
+		[Test()]
+		public void CaseKeywordTest ()
+		{
+			var provider = CodeCompletionBugTests.CreateProvider (
+@"
+class Class
+{
+	void Test (string t)
+	{
+		switch (t) {
+			$c$
+		}
+	}
+}
+");
+			Assert.IsNotNull (provider, "provider == null");
+			Assert.IsNotNull (provider.Find ("case"), "keyword 'case' not found.");
+		}
+		
+		[Test()]
+		public void CaseKeywordTestCase2 ()
+		{
+			var provider = CodeCompletionBugTests.CreateProvider (
+@"
+class Class
+{
+	void Test (string t)
+	{
+		$c$
+	}
+}
+");
+	}
+		
+		[Test()]
+		public void CaseKeywordTestCase3 ()
+		{
+			var provider = CodeCompletionBugTests.CreateProvider (
+@"
+class Class
+{
+void Test (string t)
+{
+	switch (t) {
+		case ""test"":
+		$c$
+	}
+}
+}
+");
+			Assert.IsNotNull (provider, "provider == null");
+			Assert.IsNotNull (provider.Find ("case"), "keyword 'case' not found.");
+		}
+		
+		
+	}
+}
+

ICSharpCode.NRefactory.Tests/ICSharpCode.NRefactory.Tests.csproj

@@ -195,15 +195,18 @@
     <Compile Include="CSharp\CodeCompletion\CompletionDataList.cs" />
     <Compile Include="CSharp\CodeCompletion\ParameterCompletionTests.cs" />
     <Compile Include="CSharp\CodeCompletion\TestBase.cs" />
+    <Compile Include="CSharp\CodeCompletion\KeywordTests.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\ICSharpCode.NRefactory.CSharp\ICSharpCode.NRefactory.CSharp.csproj">
       <Project>{53DCA265-3C3C-42F9-B647-F72BA678122B}</Project>
       <Name>ICSharpCode.NRefactory.CSharp</Name>
+      <Private>False</Private>
     </ProjectReference>
     <ProjectReference Include="..\ICSharpCode.NRefactory\ICSharpCode.NRefactory.csproj">
       <Project>{3B2A5653-EC97-4001-BB9B-D90F1AF2C371}</Project>
       <Name>ICSharpCode.NRefactory</Name>
+      <Private>False</Private>
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>