[Completion] Fixed bug in indexer context.

ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngine.cs

@@ -1058,7 +1058,7 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				node = node.Parent;
 			}
 			var contextList = new CompletionDataWrapper(this);
-			if (node is PropertyDeclaration) {
+			if (node is PropertyDeclaration || node is IndexerDeclaration) {
 				contextList.AddCustom("get");
 				contextList.AddCustom("set");
 				AddKeywords(contextList, accessorModifierKeywords);

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

@@ -145,11 +145,27 @@ class Test
 		public void GetSetKeywordTest ()
 		{
 			CodeCompletionBugTests.CombinedProviderTest (
-@"class Test
+				@"class Test
 {
 	public int MyProperty {
 		$g$
 }
+", provider => {
+				Assert.IsNotNull (provider.Find ("public"), "keyword 'public' not found.");
+				Assert.IsNotNull (provider.Find ("get"), "keyword 'get' not found.");
+				Assert.IsNotNull (provider.Find ("set"), "keyword 'set' not found.");
+			});
+		}
+
+		[Test()]
+		public void GetSetKeywordIndexerCaseTest ()
+		{
+			CodeCompletionBugTests.CombinedProviderTest (
+				@"class Test
+{
+	public int this[int i] {
+		$g$
+}
 ", provider => {
 				Assert.IsNotNull (provider.Find ("public"), "keyword 'public' not found.");
 				Assert.IsNotNull (provider.Find ("get"), "keyword 'get' not found.");